1 //===----- AArch64InstrInfo.td - AArch64 Instruction Info ----*- tablegen -*-=//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file describes the AArch64 scalar instructions in TableGen format.
12 //===----------------------------------------------------------------------===//
14 include "AArch64InstrFormats.td"
16 //===----------------------------------------------------------------------===//
17 // Target-specific ISD nodes and profiles
18 //===----------------------------------------------------------------------===//
20 def SDT_A64ret : SDTypeProfile<0, 0, []>;
21 def A64ret : SDNode<"AArch64ISD::Ret", SDT_A64ret, [SDNPHasChain,
25 // (ins NZCV, Condition, Dest)
26 def SDT_A64br_cc : SDTypeProfile<0, 3, [SDTCisVT<0, i32>]>;
27 def A64br_cc : SDNode<"AArch64ISD::BR_CC", SDT_A64br_cc, [SDNPHasChain]>;
29 // (outs Result), (ins NZCV, IfTrue, IfFalse, Condition)
30 def SDT_A64select_cc : SDTypeProfile<1, 4, [SDTCisVT<1, i32>,
33 def A64select_cc : SDNode<"AArch64ISD::SELECT_CC", SDT_A64select_cc>;
35 // (outs NZCV), (ins LHS, RHS, Condition)
36 def SDT_A64setcc : SDTypeProfile<1, 3, [SDTCisVT<0, i32>,
38 def A64setcc : SDNode<"AArch64ISD::SETCC", SDT_A64setcc>;
41 // (outs GPR64), (ins)
42 def A64threadpointer : SDNode<"AArch64ISD::THREAD_POINTER", SDTPtrLeaf>;
44 // A64 compares don't care about the cond really (they set all flags) so a
45 // simple binary operator is useful.
46 def A64cmp : PatFrag<(ops node:$lhs, node:$rhs),
47 (A64setcc node:$lhs, node:$rhs, cond)>;
50 // When matching a notional (CMP op1, (sub 0, op2)), we'd like to use a CMN
51 // instruction on the grounds that "op1 - (-op2) == op1 + op2". However, the C
52 // and V flags can be set differently by this operation. It comes down to
53 // whether "SInt(~op2)+1 == SInt(~op2+1)" (and the same for UInt). If they are
54 // then everything is fine. If not then the optimization is wrong. Thus general
55 // comparisons are only valid if op2 != 0.
57 // So, finally, the only LLVM-native comparisons that don't mention C and V are
58 // SETEQ and SETNE. They're the only ones we can safely use CMN for in the
59 // absence of information about op2.
60 def equality_cond : PatLeaf<(cond), [{
61 return N->get() == ISD::SETEQ || N->get() == ISD::SETNE;
64 def A64cmn : PatFrag<(ops node:$lhs, node:$rhs),
65 (A64setcc node:$lhs, (sub 0, node:$rhs), equality_cond)>;
67 // There are two layers of indirection here, driven by the following
69 // + TableGen does not know CodeModel or Reloc so that decision should be
70 // made for a variable/address at ISelLowering.
71 // + The output of ISelLowering should be selectable (hence the Wrapper,
72 // rather than a bare target opcode)
73 def SDTAArch64Wrapper : SDTypeProfile<1, 3, [SDTCisSameAs<0, 1>,
78 def A64WrapperSmall : SDNode<"AArch64ISD::WrapperSmall", SDTAArch64Wrapper>;
81 def SDTAArch64GOTLoad : SDTypeProfile<1, 1, [SDTCisPtrTy<0>, SDTCisPtrTy<1>]>;
82 def A64GOTLoad : SDNode<"AArch64ISD::GOTLoad", SDTAArch64GOTLoad,
86 // (A64BFI LHS, RHS, LSB, Width)
87 def SDTA64BFI : SDTypeProfile<1, 4, [SDTCisSameAs<0, 1>,
92 def A64Bfi : SDNode<"AArch64ISD::BFI", SDTA64BFI>;
94 // (A64EXTR HiReg, LoReg, LSB)
95 def SDTA64EXTR : SDTypeProfile<1, 3, [SDTCisSameAs<0, 1>, SDTCisSameAs<1, 2>,
97 def A64Extr : SDNode<"AArch64ISD::EXTR", SDTA64EXTR>;
99 // (A64[SU]BFX Field, ImmR, ImmS).
101 // Note that ImmR and ImmS are already encoded for the actual instructions. The
102 // more natural LSB and Width mix together to form ImmR and ImmS, something
103 // which TableGen can't handle.
104 def SDTA64BFX : SDTypeProfile<1, 3, [SDTCisVT<2, i64>, SDTCisVT<3, i64>]>;
105 def A64Sbfx : SDNode<"AArch64ISD::SBFX", SDTA64BFX>;
107 def A64Ubfx : SDNode<"AArch64ISD::UBFX", SDTA64BFX>;
109 //===----------------------------------------------------------------------===//
110 // Call sequence pseudo-instructions
111 //===----------------------------------------------------------------------===//
114 def SDT_AArch64Call : SDTypeProfile<0, -1, [SDTCisPtrTy<0>]>;
115 def AArch64Call : SDNode<"AArch64ISD::Call", SDT_AArch64Call,
116 [SDNPHasChain, SDNPOptInGlue, SDNPOutGlue, SDNPVariadic]>;
118 def AArch64tcret : SDNode<"AArch64ISD::TC_RETURN", SDT_AArch64Call,
119 [SDNPHasChain, SDNPOptInGlue, SDNPVariadic]>;
121 // The TLSDESCCALL node is a variant call which goes to an indirectly calculated
122 // destination but needs a relocation against a fixed symbol. As such it has two
123 // certain operands: the callee and the relocated variable.
125 // The TLS ABI only allows it to be selected to a BLR instructin (with
126 // appropriate relocation).
127 def SDTTLSDescCall : SDTypeProfile<0, -2, [SDTCisPtrTy<0>, SDTCisPtrTy<1>]>;
129 def A64tlsdesc_blr : SDNode<"AArch64ISD::TLSDESCCALL", SDTTLSDescCall,
130 [SDNPInGlue, SDNPOutGlue, SDNPHasChain,
134 def SDT_AArch64CallSeqStart : SDCallSeqStart<[ SDTCisPtrTy<0> ]>;
135 def AArch64callseq_start : SDNode<"ISD::CALLSEQ_START", SDT_AArch64CallSeqStart,
136 [SDNPHasChain, SDNPOutGlue]>;
138 def SDT_AArch64CallSeqEnd : SDCallSeqEnd<[ SDTCisPtrTy<0>, SDTCisPtrTy<1> ]>;
139 def AArch64callseq_end : SDNode<"ISD::CALLSEQ_END", SDT_AArch64CallSeqEnd,
140 [SDNPHasChain, SDNPOptInGlue, SDNPOutGlue]>;
144 // These pseudo-instructions have special semantics by virtue of being passed to
145 // the InstrInfo constructor. CALLSEQ_START/CALLSEQ_END are produced by
146 // LowerCall to (in our case) tell the back-end about stack adjustments for
147 // arguments passed on the stack. Here we select those markers to
148 // pseudo-instructions which explicitly set the stack, and finally in the
149 // RegisterInfo we convert them to a true stack adjustment.
150 let Defs = [XSP], Uses = [XSP] in {
151 def ADJCALLSTACKDOWN : PseudoInst<(outs), (ins i64imm:$amt),
152 [(AArch64callseq_start timm:$amt)]>;
154 def ADJCALLSTACKUP : PseudoInst<(outs), (ins i64imm:$amt1, i64imm:$amt2),
155 [(AArch64callseq_end timm:$amt1, timm:$amt2)]>;
158 //===----------------------------------------------------------------------===//
159 // Atomic operation pseudo-instructions
160 //===----------------------------------------------------------------------===//
162 let usesCustomInserter = 1 in {
163 multiclass AtomicSizes<string opname> {
164 def _I8 : PseudoInst<(outs GPR32:$dst), (ins GPR64:$ptr, GPR32:$incr),
165 [(set GPR32:$dst, (!cast<SDNode>(opname # "_8") GPR64:$ptr, GPR32:$incr))]>;
166 def _I16 : PseudoInst<(outs GPR32:$dst), (ins GPR64:$ptr, GPR32:$incr),
167 [(set GPR32:$dst, (!cast<SDNode>(opname # "_16") GPR64:$ptr, GPR32:$incr))]>;
168 def _I32 : PseudoInst<(outs GPR32:$dst), (ins GPR64:$ptr, GPR32:$incr),
169 [(set GPR32:$dst, (!cast<SDNode>(opname # "_32") GPR64:$ptr, GPR32:$incr))]>;
170 def _I64 : PseudoInst<(outs GPR64:$dst), (ins GPR64:$ptr, GPR64:$incr),
171 [(set GPR64:$dst, (!cast<SDNode>(opname # "_64") GPR64:$ptr, GPR64:$incr))]>;
175 defm ATOMIC_LOAD_ADD : AtomicSizes<"atomic_load_add">;
176 defm ATOMIC_LOAD_SUB : AtomicSizes<"atomic_load_sub">;
177 defm ATOMIC_LOAD_AND : AtomicSizes<"atomic_load_and">;
178 defm ATOMIC_LOAD_OR : AtomicSizes<"atomic_load_or">;
179 defm ATOMIC_LOAD_XOR : AtomicSizes<"atomic_load_xor">;
180 defm ATOMIC_LOAD_NAND : AtomicSizes<"atomic_load_nand">;
181 defm ATOMIC_SWAP : AtomicSizes<"atomic_swap">;
182 let Defs = [NZCV] in {
183 // These operations need a CMP to calculate the correct value
184 defm ATOMIC_LOAD_MIN : AtomicSizes<"atomic_load_min">;
185 defm ATOMIC_LOAD_MAX : AtomicSizes<"atomic_load_max">;
186 defm ATOMIC_LOAD_UMIN : AtomicSizes<"atomic_load_umin">;
187 defm ATOMIC_LOAD_UMAX : AtomicSizes<"atomic_load_umax">;
190 let usesCustomInserter = 1, Defs = [NZCV] in {
191 def ATOMIC_CMP_SWAP_I8
192 : PseudoInst<(outs GPR32:$dst), (ins GPR64:$ptr, GPR32:$old, GPR32:$new),
194 (atomic_cmp_swap_8 GPR64:$ptr, GPR32:$old, GPR32:$new))]>;
195 def ATOMIC_CMP_SWAP_I16
196 : PseudoInst<(outs GPR32:$dst), (ins GPR64:$ptr, GPR32:$old, GPR32:$new),
198 (atomic_cmp_swap_16 GPR64:$ptr, GPR32:$old, GPR32:$new))]>;
199 def ATOMIC_CMP_SWAP_I32
200 : PseudoInst<(outs GPR32:$dst), (ins GPR64:$ptr, GPR32:$old, GPR32:$new),
202 (atomic_cmp_swap_32 GPR64:$ptr, GPR32:$old, GPR32:$new))]>;
203 def ATOMIC_CMP_SWAP_I64
204 : PseudoInst<(outs GPR64:$dst), (ins GPR64:$ptr, GPR64:$old, GPR64:$new),
206 (atomic_cmp_swap_64 GPR64:$ptr, GPR64:$old, GPR64:$new))]>;
209 //===----------------------------------------------------------------------===//
210 // Add-subtract (extended register) instructions
211 //===----------------------------------------------------------------------===//
212 // Contains: ADD, ADDS, SUB, SUBS + aliases CMN, CMP
214 // The RHS of these operations is conceptually a sign/zero-extended
215 // register, optionally shifted left by 1-4. The extension can be a
216 // NOP (e.g. "sxtx" sign-extending a 64-bit register to 64-bits) but
217 // must be specified with one exception:
219 // If one of the registers is sp/wsp then LSL is an alias for UXTW in
220 // 32-bit instructions and UXTX in 64-bit versions, the shift amount
221 // is not optional in that case (but can explicitly be 0), and the
222 // entire suffix can be skipped (e.g. "add sp, x3, x2").
224 multiclass extend_operands<string PREFIX, string Diag> {
225 def _asmoperand : AsmOperandClass {
227 let RenderMethod = "addRegExtendOperands";
228 let PredicateMethod = "isRegExtend<A64SE::" # PREFIX # ">";
229 let DiagnosticType = "AddSubRegExtend" # Diag;
232 def _operand : Operand<i64>,
233 ImmLeaf<i64, [{ return Imm >= 0 && Imm <= 4; }]> {
234 let PrintMethod = "printRegExtendOperand<A64SE::" # PREFIX # ">";
235 let DecoderMethod = "DecodeRegExtendOperand";
236 let ParserMatchClass = !cast<AsmOperandClass>(PREFIX # "_asmoperand");
240 defm UXTB : extend_operands<"UXTB", "Small">;
241 defm UXTH : extend_operands<"UXTH", "Small">;
242 defm UXTW : extend_operands<"UXTW", "Small">;
243 defm UXTX : extend_operands<"UXTX", "Large">;
244 defm SXTB : extend_operands<"SXTB", "Small">;
245 defm SXTH : extend_operands<"SXTH", "Small">;
246 defm SXTW : extend_operands<"SXTW", "Small">;
247 defm SXTX : extend_operands<"SXTX", "Large">;
249 def LSL_extasmoperand : AsmOperandClass {
250 let Name = "RegExtendLSL";
251 let RenderMethod = "addRegExtendOperands";
252 let DiagnosticType = "AddSubRegExtendLarge";
255 def LSL_extoperand : Operand<i64> {
256 let ParserMatchClass = LSL_extasmoperand;
260 // The patterns for various sign-extensions are a little ugly and
261 // non-uniform because everything has already been promoted to the
262 // legal i64 and i32 types. We'll wrap the various variants up in a
263 // class for use later.
265 dag uxtb; dag uxth; dag uxtw; dag uxtx;
266 dag sxtb; dag sxth; dag sxtw; dag sxtx;
269 def extends_to_i64 : extend_types {
270 let uxtb = (and (anyext GPR32:$Rm), 255);
271 let uxth = (and (anyext GPR32:$Rm), 65535);
272 let uxtw = (zext GPR32:$Rm);
273 let uxtx = (i64 GPR64:$Rm);
275 let sxtb = (sext_inreg (anyext GPR32:$Rm), i8);
276 let sxth = (sext_inreg (anyext GPR32:$Rm), i16);
277 let sxtw = (sext GPR32:$Rm);
278 let sxtx = (i64 GPR64:$Rm);
282 def extends_to_i32 : extend_types {
283 let uxtb = (and GPR32:$Rm, 255);
284 let uxth = (and GPR32:$Rm, 65535);
285 let uxtw = (i32 GPR32:$Rm);
286 let uxtx = (i32 GPR32:$Rm);
288 let sxtb = (sext_inreg GPR32:$Rm, i8);
289 let sxth = (sext_inreg GPR32:$Rm, i16);
290 let sxtw = (i32 GPR32:$Rm);
291 let sxtx = (i32 GPR32:$Rm);
294 // Now, six of the extensions supported are easy and uniform: if the source size
295 // is 32-bits or less, then Rm is always a 32-bit register. We'll instantiate
296 // those instructions in one block.
298 // The uxtx/sxtx could potentially be merged in, but three facts dissuaded me:
299 // + It would break the naming scheme: either ADDxx_uxtx or ADDww_uxtx would
301 // + Patterns are very different as well.
302 // + Passing different registers would be ugly (more fields in extend_types
303 // would probably be the best option).
304 multiclass addsub_exts<bit sf, bit op, bit S, string asmop,
305 SDPatternOperator opfrag,
306 dag outs, extend_types exts, RegisterClass GPRsp> {
307 def w_uxtb : A64I_addsubext<sf, op, S, 0b00, 0b000,
309 (ins GPRsp:$Rn, GPR32:$Rm, UXTB_operand:$Imm3),
310 !strconcat(asmop, "$Rn, $Rm, $Imm3"),
311 [(opfrag GPRsp:$Rn, (shl exts.uxtb, UXTB_operand:$Imm3))],
313 def w_uxth : A64I_addsubext<sf, op, S, 0b00, 0b001,
315 (ins GPRsp:$Rn, GPR32:$Rm, UXTH_operand:$Imm3),
316 !strconcat(asmop, "$Rn, $Rm, $Imm3"),
317 [(opfrag GPRsp:$Rn, (shl exts.uxth, UXTH_operand:$Imm3))],
319 def w_uxtw : A64I_addsubext<sf, op, S, 0b00, 0b010,
321 (ins GPRsp:$Rn, GPR32:$Rm, UXTW_operand:$Imm3),
322 !strconcat(asmop, "$Rn, $Rm, $Imm3"),
323 [(opfrag GPRsp:$Rn, (shl exts.uxtw, UXTW_operand:$Imm3))],
326 def w_sxtb : A64I_addsubext<sf, op, S, 0b00, 0b100,
328 (ins GPRsp:$Rn, GPR32:$Rm, SXTB_operand:$Imm3),
329 !strconcat(asmop, "$Rn, $Rm, $Imm3"),
330 [(opfrag GPRsp:$Rn, (shl exts.sxtb, SXTB_operand:$Imm3))],
332 def w_sxth : A64I_addsubext<sf, op, S, 0b00, 0b101,
334 (ins GPRsp:$Rn, GPR32:$Rm, SXTH_operand:$Imm3),
335 !strconcat(asmop, "$Rn, $Rm, $Imm3"),
336 [(opfrag GPRsp:$Rn, (shl exts.sxth, SXTH_operand:$Imm3))],
338 def w_sxtw : A64I_addsubext<sf, op, S, 0b00, 0b110,
340 (ins GPRsp:$Rn, GPR32:$Rm, SXTW_operand:$Imm3),
341 !strconcat(asmop, "$Rn, $Rm, $Imm3"),
342 [(opfrag GPRsp:$Rn, (shl exts.sxtw, SXTW_operand:$Imm3))],
346 // These two could be merge in with the above, but their patterns aren't really
347 // necessary and the naming-scheme would necessarily break:
348 multiclass addsub_xxtx<bit op, bit S, string asmop, SDPatternOperator opfrag,
350 def x_uxtx : A64I_addsubext<0b1, op, S, 0b00, 0b011,
352 (ins GPR64xsp:$Rn, GPR64:$Rm, UXTX_operand:$Imm3),
353 !strconcat(asmop, "$Rn, $Rm, $Imm3"),
354 [(opfrag GPR64xsp:$Rn, (shl GPR64:$Rm, UXTX_operand:$Imm3))],
357 def x_sxtx : A64I_addsubext<0b1, op, S, 0b00, 0b111,
359 (ins GPR64xsp:$Rn, GPR64:$Rm, SXTX_operand:$Imm3),
360 !strconcat(asmop, "$Rn, $Rm, $Imm3"),
361 [/* No Pattern: same as uxtx */],
365 multiclass addsub_wxtx<bit op, bit S, string asmop, dag outs> {
366 def w_uxtx : A64I_addsubext<0b0, op, S, 0b00, 0b011,
368 (ins GPR32wsp:$Rn, GPR32:$Rm, UXTX_operand:$Imm3),
369 !strconcat(asmop, "$Rn, $Rm, $Imm3"),
370 [/* No pattern: probably same as uxtw */],
373 def w_sxtx : A64I_addsubext<0b0, op, S, 0b00, 0b111,
375 (ins GPR32wsp:$Rn, GPR32:$Rm, SXTX_operand:$Imm3),
376 !strconcat(asmop, "$Rn, $Rm, $Imm3"),
377 [/* No Pattern: probably same as uxtw */],
381 class SetRD<RegisterClass RC, SDPatternOperator op>
382 : PatFrag<(ops node:$lhs, node:$rhs), (set RC:$Rd, (op node:$lhs, node:$rhs))>;
383 class SetNZCV<SDPatternOperator op>
384 : PatFrag<(ops node:$lhs, node:$rhs), (set NZCV, (op node:$lhs, node:$rhs))>;
386 defm ADDxx :addsub_exts<0b1, 0b0, 0b0, "add\t$Rd, ", SetRD<GPR64xsp, add>,
387 (outs GPR64xsp:$Rd), extends_to_i64, GPR64xsp>,
388 addsub_xxtx< 0b0, 0b0, "add\t$Rd, ", SetRD<GPR64xsp, add>,
389 (outs GPR64xsp:$Rd)>;
390 defm ADDww :addsub_exts<0b0, 0b0, 0b0, "add\t$Rd, ", SetRD<GPR32wsp, add>,
391 (outs GPR32wsp:$Rd), extends_to_i32, GPR32wsp>,
392 addsub_wxtx< 0b0, 0b0, "add\t$Rd, ",
393 (outs GPR32wsp:$Rd)>;
394 defm SUBxx :addsub_exts<0b1, 0b1, 0b0, "sub\t$Rd, ", SetRD<GPR64xsp, sub>,
395 (outs GPR64xsp:$Rd), extends_to_i64, GPR64xsp>,
396 addsub_xxtx< 0b1, 0b0, "sub\t$Rd, ", SetRD<GPR64xsp, sub>,
397 (outs GPR64xsp:$Rd)>;
398 defm SUBww :addsub_exts<0b0, 0b1, 0b0, "sub\t$Rd, ", SetRD<GPR32wsp, sub>,
399 (outs GPR32wsp:$Rd), extends_to_i32, GPR32wsp>,
400 addsub_wxtx< 0b1, 0b0, "sub\t$Rd, ",
401 (outs GPR32wsp:$Rd)>;
403 let Defs = [NZCV] in {
404 defm ADDSxx :addsub_exts<0b1, 0b0, 0b1, "adds\t$Rd, ", SetRD<GPR64, addc>,
405 (outs GPR64:$Rd), extends_to_i64, GPR64xsp>,
406 addsub_xxtx< 0b0, 0b1, "adds\t$Rd, ", SetRD<GPR64, addc>,
408 defm ADDSww :addsub_exts<0b0, 0b0, 0b1, "adds\t$Rd, ", SetRD<GPR32, addc>,
409 (outs GPR32:$Rd), extends_to_i32, GPR32wsp>,
410 addsub_wxtx< 0b0, 0b1, "adds\t$Rd, ",
412 defm SUBSxx :addsub_exts<0b1, 0b1, 0b1, "subs\t$Rd, ", SetRD<GPR64, subc>,
413 (outs GPR64:$Rd), extends_to_i64, GPR64xsp>,
414 addsub_xxtx< 0b1, 0b1, "subs\t$Rd, ", SetRD<GPR64, subc>,
416 defm SUBSww :addsub_exts<0b0, 0b1, 0b1, "subs\t$Rd, ", SetRD<GPR32, subc>,
417 (outs GPR32:$Rd), extends_to_i32, GPR32wsp>,
418 addsub_wxtx< 0b1, 0b1, "subs\t$Rd, ",
422 let Rd = 0b11111, isCompare = 1 in {
423 defm CMNx : addsub_exts<0b1, 0b0, 0b1, "cmn\t", SetNZCV<A64cmn>,
424 (outs), extends_to_i64, GPR64xsp>,
425 addsub_xxtx< 0b0, 0b1, "cmn\t", SetNZCV<A64cmn>, (outs)>;
426 defm CMNw : addsub_exts<0b0, 0b0, 0b1, "cmn\t", SetNZCV<A64cmn>,
427 (outs), extends_to_i32, GPR32wsp>,
428 addsub_wxtx< 0b0, 0b1, "cmn\t", (outs)>;
429 defm CMPx : addsub_exts<0b1, 0b1, 0b1, "cmp\t", SetNZCV<A64cmp>,
430 (outs), extends_to_i64, GPR64xsp>,
431 addsub_xxtx< 0b1, 0b1, "cmp\t", SetNZCV<A64cmp>, (outs)>;
432 defm CMPw : addsub_exts<0b0, 0b1, 0b1, "cmp\t", SetNZCV<A64cmp>,
433 (outs), extends_to_i32, GPR32wsp>,
434 addsub_wxtx< 0b1, 0b1, "cmp\t", (outs)>;
438 // Now patterns for the operation without a shift being needed. No patterns are
439 // created for uxtx/sxtx since they're non-uniform and it's expected that
440 // add/sub (shifted register) will handle those cases anyway.
441 multiclass addsubext_noshift_patterns<string prefix, SDPatternOperator nodeop,
442 RegisterClass GPRsp, extend_types exts> {
443 def : Pat<(nodeop GPRsp:$Rn, exts.uxtb),
444 (!cast<Instruction>(prefix # "w_uxtb") GPRsp:$Rn, GPR32:$Rm, 0)>;
445 def : Pat<(nodeop GPRsp:$Rn, exts.uxth),
446 (!cast<Instruction>(prefix # "w_uxth") GPRsp:$Rn, GPR32:$Rm, 0)>;
447 def : Pat<(nodeop GPRsp:$Rn, exts.uxtw),
448 (!cast<Instruction>(prefix # "w_uxtw") GPRsp:$Rn, GPR32:$Rm, 0)>;
450 def : Pat<(nodeop GPRsp:$Rn, exts.sxtb),
451 (!cast<Instruction>(prefix # "w_sxtb") GPRsp:$Rn, GPR32:$Rm, 0)>;
452 def : Pat<(nodeop GPRsp:$Rn, exts.sxth),
453 (!cast<Instruction>(prefix # "w_sxth") GPRsp:$Rn, GPR32:$Rm, 0)>;
454 def : Pat<(nodeop GPRsp:$Rn, exts.sxtw),
455 (!cast<Instruction>(prefix # "w_sxtw") GPRsp:$Rn, GPR32:$Rm, 0)>;
458 defm : addsubext_noshift_patterns<"ADDxx", add, GPR64xsp, extends_to_i64>;
459 defm : addsubext_noshift_patterns<"ADDww", add, GPR32wsp, extends_to_i32>;
460 defm : addsubext_noshift_patterns<"SUBxx", sub, GPR64xsp, extends_to_i64>;
461 defm : addsubext_noshift_patterns<"SUBww", sub, GPR32wsp, extends_to_i32>;
463 defm : addsubext_noshift_patterns<"CMNx", A64cmn, GPR64xsp, extends_to_i64>;
464 defm : addsubext_noshift_patterns<"CMNw", A64cmn, GPR32wsp, extends_to_i32>;
465 defm : addsubext_noshift_patterns<"CMPx", A64cmp, GPR64xsp, extends_to_i64>;
466 defm : addsubext_noshift_patterns<"CMPw", A64cmp, GPR32wsp, extends_to_i32>;
468 // An extend of "lsl #imm" is valid if and only if one of Rn and Rd is
469 // sp/wsp. It is synonymous with uxtx/uxtw depending on the size of the
470 // operation. Also permitted in this case is complete omission of the argument,
471 // which implies "lsl #0".
472 multiclass lsl_aliases<string asmop, Instruction inst, RegisterClass GPR_Rd,
473 RegisterClass GPR_Rn, RegisterClass GPR_Rm> {
474 def : InstAlias<!strconcat(asmop, " $Rd, $Rn, $Rm"),
475 (inst GPR_Rd:$Rd, GPR_Rn:$Rn, GPR_Rm:$Rm, 0)>;
477 def : InstAlias<!strconcat(asmop, " $Rd, $Rn, $Rm, $LSL"),
478 (inst GPR_Rd:$Rd, GPR_Rn:$Rn, GPR_Rm:$Rm, LSL_extoperand:$LSL)>;
482 defm : lsl_aliases<"add", ADDxxx_uxtx, Rxsp, GPR64xsp, GPR64>;
483 defm : lsl_aliases<"add", ADDxxx_uxtx, GPR64xsp, Rxsp, GPR64>;
484 defm : lsl_aliases<"add", ADDwww_uxtw, Rwsp, GPR32wsp, GPR32>;
485 defm : lsl_aliases<"add", ADDwww_uxtw, GPR32wsp, Rwsp, GPR32>;
486 defm : lsl_aliases<"sub", SUBxxx_uxtx, Rxsp, GPR64xsp, GPR64>;
487 defm : lsl_aliases<"sub", SUBxxx_uxtx, GPR64xsp, Rxsp, GPR64>;
488 defm : lsl_aliases<"sub", SUBwww_uxtw, Rwsp, GPR32wsp, GPR32>;
489 defm : lsl_aliases<"sub", SUBwww_uxtw, GPR32wsp, Rwsp, GPR32>;
491 // Rd cannot be sp for flag-setting variants so only half of the aliases are
493 defm : lsl_aliases<"adds", ADDSxxx_uxtx, GPR64, Rxsp, GPR64>;
494 defm : lsl_aliases<"adds", ADDSwww_uxtw, GPR32, Rwsp, GPR32>;
495 defm : lsl_aliases<"subs", SUBSxxx_uxtx, GPR64, Rxsp, GPR64>;
496 defm : lsl_aliases<"subs", SUBSwww_uxtw, GPR32, Rwsp, GPR32>;
498 // CMP unfortunately has to be different because the instruction doesn't have a
500 multiclass cmp_lsl_aliases<string asmop, Instruction inst,
501 RegisterClass GPR_Rn, RegisterClass GPR_Rm> {
502 def : InstAlias<!strconcat(asmop, " $Rn, $Rm"),
503 (inst GPR_Rn:$Rn, GPR_Rm:$Rm, 0)>;
505 def : InstAlias<!strconcat(asmop, " $Rn, $Rm, $LSL"),
506 (inst GPR_Rn:$Rn, GPR_Rm:$Rm, LSL_extoperand:$LSL)>;
509 defm : cmp_lsl_aliases<"cmp", CMPxx_uxtx, Rxsp, GPR64>;
510 defm : cmp_lsl_aliases<"cmp", CMPww_uxtw, Rwsp, GPR32>;
511 defm : cmp_lsl_aliases<"cmn", CMNxx_uxtx, Rxsp, GPR64>;
512 defm : cmp_lsl_aliases<"cmn", CMNww_uxtw, Rwsp, GPR32>;
514 //===----------------------------------------------------------------------===//
515 // Add-subtract (immediate) instructions
516 //===----------------------------------------------------------------------===//
517 // Contains: ADD, ADDS, SUB, SUBS + aliases CMN, CMP, MOV
519 // These instructions accept a 12-bit unsigned immediate, optionally shifted
520 // left by 12 bits. Official assembly format specifies a 12 bit immediate with
521 // one of "", "LSL #0", "LSL #12" supplementary operands.
523 // There are surprisingly few ways to make this work with TableGen, so this
524 // implementation has separate instructions for the "LSL #0" and "LSL #12"
527 // If the MCInst retained a single combined immediate (which could be 0x123000,
528 // for example) then both components (imm & shift) would have to be delegated to
529 // a single assembly operand. This would entail a separate operand parser
530 // (because the LSL would have to live in the same AArch64Operand as the
531 // immediate to be accessible); assembly parsing is rather complex and
532 // error-prone C++ code.
534 // By splitting the immediate, we can delegate handling this optional operand to
535 // an InstAlias. Supporting functions to generate the correct MCInst are still
536 // required, but these are essentially trivial and parsing can remain generic.
538 // Rejected plans with rationale:
539 // ------------------------------
541 // In an ideal world you'de have two first class immediate operands (in
542 // InOperandList, specifying imm12 and shift). Unfortunately this is not
543 // selectable by any means I could discover.
545 // An Instruction with two MCOperands hidden behind a single entry in
546 // InOperandList (expanded by ComplexPatterns and MIOperandInfo) was functional,
547 // but required more C++ code to handle encoding/decoding. Parsing (the intended
548 // main beneficiary) ended up equally complex because of the optional nature of
551 // Attempting to circumvent the need for a custom OperandParser above by giving
552 // InstAliases without the "lsl #0" failed. add/sub could be accommodated but
553 // the cmp/cmn aliases didn't use the MIOperandInfo to determine how operands
554 // should be parsed: there was no way to accommodate an "lsl #12".
556 let ParserMethod = "ParseImmWithLSLOperand",
557 RenderMethod = "addImmWithLSLOperands" in {
558 // Derived PredicateMethod fields are different for each
559 def addsubimm_lsl0_asmoperand : AsmOperandClass {
560 let Name = "AddSubImmLSL0";
561 // If an error is reported against this operand, instruction could also be a
563 let DiagnosticType = "AddSubSecondSource";
566 def addsubimm_lsl12_asmoperand : AsmOperandClass {
567 let Name = "AddSubImmLSL12";
568 let DiagnosticType = "AddSubSecondSource";
572 def shr_12_XFORM : SDNodeXForm<imm, [{
573 return CurDAG->getTargetConstant(N->getSExtValue() >> 12, MVT::i32);
576 def shr_12_neg_XFORM : SDNodeXForm<imm, [{
577 return CurDAG->getTargetConstant((-N->getSExtValue()) >> 12, MVT::i32);
580 def neg_XFORM : SDNodeXForm<imm, [{
581 return CurDAG->getTargetConstant(-N->getSExtValue(), MVT::i32);
585 multiclass addsub_imm_operands<ValueType ty> {
586 let PrintMethod = "printAddSubImmLSL0Operand",
587 EncoderMethod = "getAddSubImmOpValue",
588 ParserMatchClass = addsubimm_lsl0_asmoperand in {
589 def _posimm_lsl0 : Operand<ty>,
590 ImmLeaf<ty, [{ return Imm >= 0 && (Imm & ~0xfff) == 0; }]>;
591 def _negimm_lsl0 : Operand<ty>,
592 ImmLeaf<ty, [{ return Imm < 0 && (-Imm & ~0xfff) == 0; }],
596 let PrintMethod = "printAddSubImmLSL12Operand",
597 EncoderMethod = "getAddSubImmOpValue",
598 ParserMatchClass = addsubimm_lsl12_asmoperand in {
599 def _posimm_lsl12 : Operand<ty>,
600 ImmLeaf<ty, [{ return Imm >= 0 && (Imm & ~0xfff000) == 0; }],
603 def _negimm_lsl12 : Operand<ty>,
604 ImmLeaf<ty, [{ return Imm < 0 && (-Imm & ~0xfff000) == 0; }],
609 // The add operands don't need any transformation
610 defm addsubimm_operand_i32 : addsub_imm_operands<i32>;
611 defm addsubimm_operand_i64 : addsub_imm_operands<i64>;
613 multiclass addsubimm_varieties<string prefix, bit sf, bit op, bits<2> shift,
614 string asmop, string cmpasmop,
615 Operand imm_operand, Operand cmp_imm_operand,
616 RegisterClass GPR, RegisterClass GPRsp,
618 // All registers for non-S variants allow SP
619 def _s : A64I_addsubimm<sf, op, 0b0, shift,
621 (ins GPRsp:$Rn, imm_operand:$Imm12),
622 !strconcat(asmop, "\t$Rd, $Rn, $Imm12"),
624 (add GPRsp:$Rn, imm_operand:$Imm12))],
628 // S variants can read SP but would write to ZR
629 def _S : A64I_addsubimm<sf, op, 0b1, shift,
631 (ins GPRsp:$Rn, imm_operand:$Imm12),
632 !strconcat(asmop, "s\t$Rd, $Rn, $Imm12"),
633 [(set GPR:$Rd, (addc GPRsp:$Rn, imm_operand:$Imm12))],
638 // Note that the pattern here for ADDS is subtle. Canonically CMP
639 // a, b becomes SUBS a, b. If b < 0 then this is equivalent to
640 // ADDS a, (-b). This is not true in general.
641 def _cmp : A64I_addsubimm<sf, op, 0b1, shift,
642 (outs), (ins GPRsp:$Rn, imm_operand:$Imm12),
643 !strconcat(cmpasmop, " $Rn, $Imm12"),
645 (A64cmp GPRsp:$Rn, cmp_imm_operand:$Imm12))],
654 multiclass addsubimm_shifts<string prefix, bit sf, bit op,
655 string asmop, string cmpasmop, string operand, string cmpoperand,
656 RegisterClass GPR, RegisterClass GPRsp, AArch64Reg ZR> {
657 defm _lsl0 : addsubimm_varieties<prefix # "_lsl0", sf, op, 0b00,
659 !cast<Operand>(operand # "_lsl0"),
660 !cast<Operand>(cmpoperand # "_lsl0"),
663 defm _lsl12 : addsubimm_varieties<prefix # "_lsl12", sf, op, 0b01,
665 !cast<Operand>(operand # "_lsl12"),
666 !cast<Operand>(cmpoperand # "_lsl12"),
670 defm ADDwwi : addsubimm_shifts<"ADDwi", 0b0, 0b0, "add", "cmn",
671 "addsubimm_operand_i32_posimm",
672 "addsubimm_operand_i32_negimm",
673 GPR32, GPR32wsp, WZR>;
674 defm ADDxxi : addsubimm_shifts<"ADDxi", 0b1, 0b0, "add", "cmn",
675 "addsubimm_operand_i64_posimm",
676 "addsubimm_operand_i64_negimm",
677 GPR64, GPR64xsp, XZR>;
678 defm SUBwwi : addsubimm_shifts<"SUBwi", 0b0, 0b1, "sub", "cmp",
679 "addsubimm_operand_i32_negimm",
680 "addsubimm_operand_i32_posimm",
681 GPR32, GPR32wsp, WZR>;
682 defm SUBxxi : addsubimm_shifts<"SUBxi", 0b1, 0b1, "sub", "cmp",
683 "addsubimm_operand_i64_negimm",
684 "addsubimm_operand_i64_posimm",
685 GPR64, GPR64xsp, XZR>;
687 multiclass MOVsp<RegisterClass GPRsp, RegisterClass SP, Instruction addop> {
688 def _fromsp : InstAlias<"mov $Rd, $Rn",
689 (addop GPRsp:$Rd, SP:$Rn, 0),
692 def _tosp : InstAlias<"mov $Rd, $Rn",
693 (addop SP:$Rd, GPRsp:$Rn, 0),
697 // Recall Rxsp is a RegisterClass containing *just* xsp.
698 defm MOVxx : MOVsp<GPR64xsp, Rxsp, ADDxxi_lsl0_s>;
699 defm MOVww : MOVsp<GPR32wsp, Rwsp, ADDwwi_lsl0_s>;
701 //===----------------------------------------------------------------------===//
702 // Add-subtract (shifted register) instructions
703 //===----------------------------------------------------------------------===//
704 // Contains: ADD, ADDS, SUB, SUBS + aliases CMN, CMP, NEG, NEGS
706 //===-------------------------------
707 // 1. The "shifed register" operands. Shared with logical insts.
708 //===-------------------------------
710 multiclass shift_operands<string prefix, string form> {
711 def _asmoperand_i32 : AsmOperandClass {
712 let Name = "Shift" # form # "i32";
713 let RenderMethod = "addShiftOperands";
714 let PredicateMethod = "isShift<A64SE::" # form # ", false>";
715 let DiagnosticType = "AddSubRegShift32";
718 // Note that the operand type is intentionally i64 because the DAGCombiner
719 // puts these into a canonical form.
720 def _i32 : Operand<i64>, ImmLeaf<i64, [{ return Imm >= 0 && Imm <= 31; }]> {
722 = !cast<AsmOperandClass>(prefix # "_asmoperand_i32");
723 let PrintMethod = "printShiftOperand<A64SE::" # form # ">";
724 let DecoderMethod = "Decode32BitShiftOperand";
727 def _asmoperand_i64 : AsmOperandClass {
728 let Name = "Shift" # form # "i64";
729 let RenderMethod = "addShiftOperands";
730 let PredicateMethod = "isShift<A64SE::" # form # ", true>";
731 let DiagnosticType = "AddSubRegShift64";
734 def _i64 : Operand<i64>, ImmLeaf<i64, [{ return Imm >= 0 && Imm <= 63; }]> {
736 = !cast<AsmOperandClass>(prefix # "_asmoperand_i64");
737 let PrintMethod = "printShiftOperand<A64SE::" # form # ">";
741 defm lsl_operand : shift_operands<"lsl_operand", "LSL">;
742 defm lsr_operand : shift_operands<"lsr_operand", "LSR">;
743 defm asr_operand : shift_operands<"asr_operand", "ASR">;
745 // Not used for add/sub, but defined here for completeness. The "logical
746 // (shifted register)" instructions *do* have an ROR variant.
747 defm ror_operand : shift_operands<"ror_operand", "ROR">;
749 //===-------------------------------
750 // 2. The basic 3.5-operand ADD/SUB/ADDS/SUBS instructions.
751 //===-------------------------------
753 // N.b. the commutable parameter is just !N. It will be first against the wall
754 // when the revolution comes.
755 multiclass addsub_shifts<string prefix, bit sf, bit op, bit s, bit commutable,
756 string asmop, SDPatternOperator opfrag, string sty,
757 RegisterClass GPR, list<Register> defs> {
758 let isCommutable = commutable, Defs = defs in {
759 def _lsl : A64I_addsubshift<sf, op, s, 0b00,
761 (ins GPR:$Rn, GPR:$Rm,
762 !cast<Operand>("lsl_operand_" # sty):$Imm6),
763 !strconcat(asmop, "\t$Rd, $Rn, $Rm, $Imm6"),
764 [(set GPR:$Rd, (opfrag GPR:$Rn, (shl GPR:$Rm,
765 !cast<Operand>("lsl_operand_" # sty):$Imm6))
769 def _lsr : A64I_addsubshift<sf, op, s, 0b01,
771 (ins GPR:$Rn, GPR:$Rm,
772 !cast<Operand>("lsr_operand_" # sty):$Imm6),
773 !strconcat(asmop, "\t$Rd, $Rn, $Rm, $Imm6"),
774 [(set GPR:$Rd, (opfrag GPR:$Rn, (srl GPR:$Rm,
775 !cast<Operand>("lsr_operand_" # sty):$Imm6))
779 def _asr : A64I_addsubshift<sf, op, s, 0b10,
781 (ins GPR:$Rn, GPR:$Rm,
782 !cast<Operand>("asr_operand_" # sty):$Imm6),
783 !strconcat(asmop, "\t$Rd, $Rn, $Rm, $Imm6"),
784 [(set GPR:$Rd, (opfrag GPR:$Rn, (sra GPR:$Rm,
785 !cast<Operand>("asr_operand_" # sty):$Imm6))
791 : InstAlias<!strconcat(asmop, " $Rd, $Rn, $Rm"),
792 (!cast<Instruction>(prefix # "_lsl") GPR:$Rd, GPR:$Rn,
795 def : Pat<(opfrag GPR:$Rn, GPR:$Rm),
796 (!cast<Instruction>(prefix # "_lsl") GPR:$Rn, GPR:$Rm, 0)>;
799 multiclass addsub_sizes<string prefix, bit op, bit s, bit commutable,
800 string asmop, SDPatternOperator opfrag,
801 list<Register> defs> {
802 defm xxx : addsub_shifts<prefix # "xxx", 0b1, op, s,
803 commutable, asmop, opfrag, "i64", GPR64, defs>;
804 defm www : addsub_shifts<prefix # "www", 0b0, op, s,
805 commutable, asmop, opfrag, "i32", GPR32, defs>;
809 defm ADD : addsub_sizes<"ADD", 0b0, 0b0, 0b1, "add", add, []>;
810 defm SUB : addsub_sizes<"SUB", 0b1, 0b0, 0b0, "sub", sub, []>;
812 defm ADDS : addsub_sizes<"ADDS", 0b0, 0b1, 0b1, "adds", addc, [NZCV]>;
813 defm SUBS : addsub_sizes<"SUBS", 0b1, 0b1, 0b0, "subs", subc, [NZCV]>;
815 //===-------------------------------
816 // 1. The NEG/NEGS aliases
817 //===-------------------------------
819 multiclass neg_alias<Instruction INST, RegisterClass GPR,
820 Register ZR, Operand shift_operand, SDNode shiftop> {
821 def : InstAlias<"neg $Rd, $Rm, $Imm6",
822 (INST GPR:$Rd, ZR, GPR:$Rm, shift_operand:$Imm6)>;
824 def : Pat<(sub 0, (shiftop GPR:$Rm, shift_operand:$Imm6)),
825 (INST ZR, GPR:$Rm, shift_operand:$Imm6)>;
828 defm : neg_alias<SUBwww_lsl, GPR32, WZR, lsl_operand_i32, shl>;
829 defm : neg_alias<SUBwww_lsr, GPR32, WZR, lsr_operand_i32, srl>;
830 defm : neg_alias<SUBwww_asr, GPR32, WZR, asr_operand_i32, sra>;
831 def : InstAlias<"neg $Rd, $Rm", (SUBwww_lsl GPR32:$Rd, WZR, GPR32:$Rm, 0)>;
832 def : Pat<(sub 0, GPR32:$Rm), (SUBwww_lsl WZR, GPR32:$Rm, 0)>;
834 defm : neg_alias<SUBxxx_lsl, GPR64, XZR, lsl_operand_i64, shl>;
835 defm : neg_alias<SUBxxx_lsr, GPR64, XZR, lsr_operand_i64, srl>;
836 defm : neg_alias<SUBxxx_asr, GPR64, XZR, asr_operand_i64, sra>;
837 def : InstAlias<"neg $Rd, $Rm", (SUBxxx_lsl GPR64:$Rd, XZR, GPR64:$Rm, 0)>;
838 def : Pat<(sub 0, GPR64:$Rm), (SUBxxx_lsl XZR, GPR64:$Rm, 0)>;
840 // NEGS doesn't get any patterns yet: defining multiple outputs means C++ has to
842 class negs_alias<Instruction INST, RegisterClass GPR,
843 Register ZR, Operand shift_operand, SDNode shiftop>
844 : InstAlias<"negs $Rd, $Rm, $Imm6",
845 (INST GPR:$Rd, ZR, GPR:$Rm, shift_operand:$Imm6)>;
847 def : negs_alias<SUBSwww_lsl, GPR32, WZR, lsl_operand_i32, shl>;
848 def : negs_alias<SUBSwww_lsr, GPR32, WZR, lsr_operand_i32, srl>;
849 def : negs_alias<SUBSwww_asr, GPR32, WZR, asr_operand_i32, sra>;
850 def : InstAlias<"negs $Rd, $Rm", (SUBSwww_lsl GPR32:$Rd, WZR, GPR32:$Rm, 0)>;
852 def : negs_alias<SUBSxxx_lsl, GPR64, XZR, lsl_operand_i64, shl>;
853 def : negs_alias<SUBSxxx_lsr, GPR64, XZR, lsr_operand_i64, srl>;
854 def : negs_alias<SUBSxxx_asr, GPR64, XZR, asr_operand_i64, sra>;
855 def : InstAlias<"negs $Rd, $Rm", (SUBSxxx_lsl GPR64:$Rd, XZR, GPR64:$Rm, 0)>;
857 //===-------------------------------
858 // 1. The CMP/CMN aliases
859 //===-------------------------------
861 multiclass cmp_shifts<string prefix, bit sf, bit op, bit commutable,
862 string asmop, SDPatternOperator opfrag, string sty,
864 let isCommutable = commutable, Rd = 0b11111, Defs = [NZCV] in {
865 def _lsl : A64I_addsubshift<sf, op, 0b1, 0b00,
867 (ins GPR:$Rn, GPR:$Rm,
868 !cast<Operand>("lsl_operand_" # sty):$Imm6),
869 !strconcat(asmop, "\t$Rn, $Rm, $Imm6"),
870 [(set NZCV, (opfrag GPR:$Rn, (shl GPR:$Rm,
871 !cast<Operand>("lsl_operand_" # sty):$Imm6))
875 def _lsr : A64I_addsubshift<sf, op, 0b1, 0b01,
877 (ins GPR:$Rn, GPR:$Rm,
878 !cast<Operand>("lsr_operand_" # sty):$Imm6),
879 !strconcat(asmop, "\t$Rn, $Rm, $Imm6"),
880 [(set NZCV, (opfrag GPR:$Rn, (srl GPR:$Rm,
881 !cast<Operand>("lsr_operand_" # sty):$Imm6))
885 def _asr : A64I_addsubshift<sf, op, 0b1, 0b10,
887 (ins GPR:$Rn, GPR:$Rm,
888 !cast<Operand>("asr_operand_" # sty):$Imm6),
889 !strconcat(asmop, "\t$Rn, $Rm, $Imm6"),
890 [(set NZCV, (opfrag GPR:$Rn, (sra GPR:$Rm,
891 !cast<Operand>("asr_operand_" # sty):$Imm6))
897 : InstAlias<!strconcat(asmop, " $Rn, $Rm"),
898 (!cast<Instruction>(prefix # "_lsl") GPR:$Rn, GPR:$Rm, 0)>;
900 def : Pat<(opfrag GPR:$Rn, GPR:$Rm),
901 (!cast<Instruction>(prefix # "_lsl") GPR:$Rn, GPR:$Rm, 0)>;
904 defm CMPww : cmp_shifts<"CMPww", 0b0, 0b1, 0b0, "cmp", A64cmp, "i32", GPR32>;
905 defm CMPxx : cmp_shifts<"CMPxx", 0b1, 0b1, 0b0, "cmp", A64cmp, "i64", GPR64>;
907 defm CMNww : cmp_shifts<"CMNww", 0b0, 0b0, 0b1, "cmn", A64cmn, "i32", GPR32>;
908 defm CMNxx : cmp_shifts<"CMNxx", 0b1, 0b0, 0b1, "cmn", A64cmn, "i64", GPR64>;
910 //===----------------------------------------------------------------------===//
911 // Add-subtract (with carry) instructions
912 //===----------------------------------------------------------------------===//
913 // Contains: ADC, ADCS, SBC, SBCS + aliases NGC, NGCS
915 multiclass A64I_addsubcarrySizes<bit op, bit s, string asmop> {
916 let Uses = [NZCV] in {
917 def www : A64I_addsubcarry<0b0, op, s, 0b000000,
918 (outs GPR32:$Rd), (ins GPR32:$Rn, GPR32:$Rm),
919 !strconcat(asmop, "\t$Rd, $Rn, $Rm"),
922 def xxx : A64I_addsubcarry<0b1, op, s, 0b000000,
923 (outs GPR64:$Rd), (ins GPR64:$Rn, GPR64:$Rm),
924 !strconcat(asmop, "\t$Rd, $Rn, $Rm"),
929 let isCommutable = 1 in {
930 defm ADC : A64I_addsubcarrySizes<0b0, 0b0, "adc">;
933 defm SBC : A64I_addsubcarrySizes<0b1, 0b0, "sbc">;
935 let Defs = [NZCV] in {
936 let isCommutable = 1 in {
937 defm ADCS : A64I_addsubcarrySizes<0b0, 0b1, "adcs">;
940 defm SBCS : A64I_addsubcarrySizes<0b1, 0b1, "sbcs">;
943 def : InstAlias<"ngc $Rd, $Rm", (SBCwww GPR32:$Rd, WZR, GPR32:$Rm)>;
944 def : InstAlias<"ngc $Rd, $Rm", (SBCxxx GPR64:$Rd, XZR, GPR64:$Rm)>;
945 def : InstAlias<"ngcs $Rd, $Rm", (SBCSwww GPR32:$Rd, WZR, GPR32:$Rm)>;
946 def : InstAlias<"ngcs $Rd, $Rm", (SBCSxxx GPR64:$Rd, XZR, GPR64:$Rm)>;
948 // Note that adde and sube can form a chain longer than two (e.g. for 256-bit
949 // addition). So the flag-setting instructions are appropriate.
950 def : Pat<(adde GPR32:$Rn, GPR32:$Rm), (ADCSwww GPR32:$Rn, GPR32:$Rm)>;
951 def : Pat<(adde GPR64:$Rn, GPR64:$Rm), (ADCSxxx GPR64:$Rn, GPR64:$Rm)>;
952 def : Pat<(sube GPR32:$Rn, GPR32:$Rm), (SBCSwww GPR32:$Rn, GPR32:$Rm)>;
953 def : Pat<(sube GPR64:$Rn, GPR64:$Rm), (SBCSxxx GPR64:$Rn, GPR64:$Rm)>;
955 //===----------------------------------------------------------------------===//
957 //===----------------------------------------------------------------------===//
958 // Contains: SBFM, BFM, UBFM, [SU]XT[BHW], ASR, LSR, LSL, SBFI[ZX], BFI, BFXIL,
961 // Because of the rather complicated nearly-overlapping aliases, the decoding of
962 // this range of instructions is handled manually. The architectural
963 // instructions are BFM, SBFM and UBFM but a disassembler should never produce
966 // In the end, the best option was to use BFM instructions for decoding under
967 // almost all circumstances, but to create aliasing *Instructions* for each of
968 // the canonical forms and specify a completely custom decoder which would
969 // substitute the correct MCInst as needed.
971 // This also simplifies instruction selection, parsing etc because the MCInsts
972 // have a shape that's closer to their use in code.
974 //===-------------------------------
975 // 1. The architectural BFM instructions
976 //===-------------------------------
978 def uimm5_asmoperand : AsmOperandClass {
980 let PredicateMethod = "isUImm<5>";
981 let RenderMethod = "addImmOperands";
982 let DiagnosticType = "UImm5";
985 def uimm6_asmoperand : AsmOperandClass {
987 let PredicateMethod = "isUImm<6>";
988 let RenderMethod = "addImmOperands";
989 let DiagnosticType = "UImm6";
992 def bitfield32_imm : Operand<i64>,
993 ImmLeaf<i64, [{ return Imm >= 0 && Imm < 32; }]> {
994 let ParserMatchClass = uimm5_asmoperand;
996 let DecoderMethod = "DecodeBitfield32ImmOperand";
1000 def bitfield64_imm : Operand<i64>,
1001 ImmLeaf<i64, [{ return Imm >= 0 && Imm < 64; }]> {
1002 let ParserMatchClass = uimm6_asmoperand;
1004 // Default decoder works in 64-bit case: the 6-bit field can take any value.
1007 multiclass A64I_bitfieldSizes<bits<2> opc, string asmop> {
1008 def wwii : A64I_bitfield<0b0, opc, 0b0, (outs GPR32:$Rd),
1009 (ins GPR32:$Rn, bitfield32_imm:$ImmR, bitfield32_imm:$ImmS),
1010 !strconcat(asmop, "\t$Rd, $Rn, $ImmR, $ImmS"),
1012 let DecoderMethod = "DecodeBitfieldInstruction";
1015 def xxii : A64I_bitfield<0b1, opc, 0b1, (outs GPR64:$Rd),
1016 (ins GPR64:$Rn, bitfield64_imm:$ImmR, bitfield64_imm:$ImmS),
1017 !strconcat(asmop, "\t$Rd, $Rn, $ImmR, $ImmS"),
1019 let DecoderMethod = "DecodeBitfieldInstruction";
1023 defm SBFM : A64I_bitfieldSizes<0b00, "sbfm">;
1024 defm UBFM : A64I_bitfieldSizes<0b10, "ubfm">;
1026 // BFM instructions modify the destination register rather than defining it
1029 A64I_bitfield<0b0, 0b01, 0b0, (outs GPR32:$Rd),
1030 (ins GPR32:$src, GPR32:$Rn, bitfield32_imm:$ImmR, bitfield32_imm:$ImmS),
1031 "bfm\t$Rd, $Rn, $ImmR, $ImmS", [], NoItinerary> {
1032 let DecoderMethod = "DecodeBitfieldInstruction";
1033 let Constraints = "$src = $Rd";
1037 A64I_bitfield<0b1, 0b01, 0b1, (outs GPR64:$Rd),
1038 (ins GPR64:$src, GPR64:$Rn, bitfield64_imm:$ImmR, bitfield64_imm:$ImmS),
1039 "bfm\t$Rd, $Rn, $ImmR, $ImmS", [], NoItinerary> {
1040 let DecoderMethod = "DecodeBitfieldInstruction";
1041 let Constraints = "$src = $Rd";
1045 //===-------------------------------
1046 // 2. Extend aliases to 64-bit dest
1047 //===-------------------------------
1049 // Unfortunately the extensions that end up as 64-bits cannot be handled by an
1050 // instruction alias: their syntax is (for example) "SXTB x0, w0", which needs
1051 // to be mapped to "SBFM x0, x0, #0, 7" (changing the class of Rn). InstAlias is
1052 // not capable of such a map as far as I'm aware
1054 // Note that these instructions are strictly more specific than the
1055 // BFM ones (in ImmR) so they can handle their own decoding.
1056 class A64I_bf_ext<bit sf, bits<2> opc, RegisterClass GPRDest, string asmop,
1057 bits<6> imms, dag pattern>
1058 : A64I_bitfield<sf, opc, sf,
1059 (outs GPRDest:$Rd), (ins GPR32:$Rn),
1060 !strconcat(asmop, "\t$Rd, $Rn"),
1061 [(set GPRDest:$Rd, pattern)], NoItinerary> {
1062 let ImmR = 0b000000;
1066 // Signed extensions
1067 def SXTBxw : A64I_bf_ext<0b1, 0b00, GPR64, "sxtb", 7,
1068 (sext_inreg (anyext GPR32:$Rn), i8)>;
1069 def SXTBww : A64I_bf_ext<0b0, 0b00, GPR32, "sxtb", 7,
1070 (sext_inreg GPR32:$Rn, i8)>;
1071 def SXTHxw : A64I_bf_ext<0b1, 0b00, GPR64, "sxth", 15,
1072 (sext_inreg (anyext GPR32:$Rn), i16)>;
1073 def SXTHww : A64I_bf_ext<0b0, 0b00, GPR32, "sxth", 15,
1074 (sext_inreg GPR32:$Rn, i16)>;
1075 def SXTWxw : A64I_bf_ext<0b1, 0b00, GPR64, "sxtw", 31, (sext GPR32:$Rn)>;
1077 // Unsigned extensions
1078 def UXTBww : A64I_bf_ext<0b0, 0b10, GPR32, "uxtb", 7,
1079 (and GPR32:$Rn, 255)>;
1080 def UXTHww : A64I_bf_ext<0b0, 0b10, GPR32, "uxth", 15,
1081 (and GPR32:$Rn, 65535)>;
1083 // The 64-bit unsigned variants are not strictly architectural but recommended
1085 let isAsmParserOnly = 1 in {
1086 def UXTBxw : A64I_bf_ext<0b0, 0b10, GPR64, "uxtb", 7,
1087 (and (anyext GPR32:$Rn), 255)>;
1088 def UXTHxw : A64I_bf_ext<0b0, 0b10, GPR64, "uxth", 15,
1089 (and (anyext GPR32:$Rn), 65535)>;
1092 // Extra patterns for when the source register is actually 64-bits
1093 // too. There's no architectural difference here, it's just LLVM
1094 // shinanigans. There's no need for equivalent zero-extension patterns
1095 // because they'll already be caught by logical (immediate) matching.
1096 def : Pat<(sext_inreg GPR64:$Rn, i8),
1097 (SXTBxw (EXTRACT_SUBREG GPR64:$Rn, sub_32))>;
1098 def : Pat<(sext_inreg GPR64:$Rn, i16),
1099 (SXTHxw (EXTRACT_SUBREG GPR64:$Rn, sub_32))>;
1100 def : Pat<(sext_inreg GPR64:$Rn, i32),
1101 (SXTWxw (EXTRACT_SUBREG GPR64:$Rn, sub_32))>;
1104 //===-------------------------------
1105 // 3. Aliases for ASR and LSR (the simple shifts)
1106 //===-------------------------------
1108 // These also handle their own decoding because ImmS being set makes
1109 // them take precedence over BFM.
1110 multiclass A64I_shift<bits<2> opc, string asmop, SDNode opnode> {
1111 def wwi : A64I_bitfield<0b0, opc, 0b0,
1112 (outs GPR32:$Rd), (ins GPR32:$Rn, bitfield32_imm:$ImmR),
1113 !strconcat(asmop, "\t$Rd, $Rn, $ImmR"),
1114 [(set GPR32:$Rd, (opnode GPR32:$Rn, bitfield32_imm:$ImmR))],
1119 def xxi : A64I_bitfield<0b1, opc, 0b1,
1120 (outs GPR64:$Rd), (ins GPR64:$Rn, bitfield64_imm:$ImmR),
1121 !strconcat(asmop, "\t$Rd, $Rn, $ImmR"),
1122 [(set GPR64:$Rd, (opnode GPR64:$Rn, bitfield64_imm:$ImmR))],
1129 defm ASR : A64I_shift<0b00, "asr", sra>;
1130 defm LSR : A64I_shift<0b10, "lsr", srl>;
1132 //===-------------------------------
1133 // 4. Aliases for LSL
1134 //===-------------------------------
1136 // Unfortunately LSL and subsequent aliases are much more complicated. We need
1137 // to be able to say certain output instruction fields depend in a complex
1138 // manner on combinations of input assembly fields).
1140 // MIOperandInfo *might* have been able to do it, but at the cost of
1141 // significantly more C++ code.
1143 // N.b. contrary to usual practice these operands store the shift rather than
1144 // the machine bits in an MCInst. The complexity overhead of consistency
1145 // outweighed the benefits in this case (custom asmparser, printer and selection
1146 // vs custom encoder).
1147 def bitfield32_lsl_imm : Operand<i64>,
1148 ImmLeaf<i64, [{ return Imm >= 0 && Imm <= 31; }]> {
1149 let ParserMatchClass = uimm5_asmoperand;
1150 let EncoderMethod = "getBitfield32LSLOpValue";
1153 def bitfield64_lsl_imm : Operand<i64>,
1154 ImmLeaf<i64, [{ return Imm >= 0 && Imm <= 63; }]> {
1155 let ParserMatchClass = uimm6_asmoperand;
1156 let EncoderMethod = "getBitfield64LSLOpValue";
1159 class A64I_bitfield_lsl<bit sf, RegisterClass GPR, Operand operand>
1160 : A64I_bitfield<sf, 0b10, sf, (outs GPR:$Rd), (ins GPR:$Rn, operand:$FullImm),
1161 "lsl\t$Rd, $Rn, $FullImm",
1162 [(set GPR:$Rd, (shl GPR:$Rn, operand:$FullImm))],
1165 let ImmR = FullImm{5-0};
1166 let ImmS = FullImm{11-6};
1168 // No disassembler allowed because it would overlap with BFM which does the
1170 let isAsmParserOnly = 1;
1173 def LSLwwi : A64I_bitfield_lsl<0b0, GPR32, bitfield32_lsl_imm>;
1174 def LSLxxi : A64I_bitfield_lsl<0b1, GPR64, bitfield64_lsl_imm>;
1176 //===-------------------------------
1177 // 5. Aliases for bitfield extract instructions
1178 //===-------------------------------
1180 def bfx32_width_asmoperand : AsmOperandClass {
1181 let Name = "BFX32Width";
1182 let PredicateMethod = "isBitfieldWidth<32>";
1183 let RenderMethod = "addBFXWidthOperands";
1184 let DiagnosticType = "Width32";
1187 def bfx32_width : Operand<i64>, ImmLeaf<i64, [{ return true; }]> {
1188 let PrintMethod = "printBFXWidthOperand";
1189 let ParserMatchClass = bfx32_width_asmoperand;
1192 def bfx64_width_asmoperand : AsmOperandClass {
1193 let Name = "BFX64Width";
1194 let PredicateMethod = "isBitfieldWidth<64>";
1195 let RenderMethod = "addBFXWidthOperands";
1196 let DiagnosticType = "Width64";
1199 def bfx64_width : Operand<i64> {
1200 let PrintMethod = "printBFXWidthOperand";
1201 let ParserMatchClass = bfx64_width_asmoperand;
1205 multiclass A64I_bitfield_extract<bits<2> opc, string asmop, SDNode op> {
1206 def wwii : A64I_bitfield<0b0, opc, 0b0, (outs GPR32:$Rd),
1207 (ins GPR32:$Rn, bitfield32_imm:$ImmR, bfx32_width:$ImmS),
1208 !strconcat(asmop, "\t$Rd, $Rn, $ImmR, $ImmS"),
1209 [(set GPR32:$Rd, (op GPR32:$Rn, imm:$ImmR, imm:$ImmS))],
1211 // As above, no disassembler allowed.
1212 let isAsmParserOnly = 1;
1215 def xxii : A64I_bitfield<0b1, opc, 0b1, (outs GPR64:$Rd),
1216 (ins GPR64:$Rn, bitfield64_imm:$ImmR, bfx64_width:$ImmS),
1217 !strconcat(asmop, "\t$Rd, $Rn, $ImmR, $ImmS"),
1218 [(set GPR64:$Rd, (op GPR64:$Rn, imm:$ImmR, imm:$ImmS))],
1220 // As above, no disassembler allowed.
1221 let isAsmParserOnly = 1;
1225 defm SBFX : A64I_bitfield_extract<0b00, "sbfx", A64Sbfx>;
1226 defm UBFX : A64I_bitfield_extract<0b10, "ubfx", A64Ubfx>;
1228 // Again, variants based on BFM modify Rd so need it as an input too.
1229 def BFXILwwii : A64I_bitfield<0b0, 0b01, 0b0, (outs GPR32:$Rd),
1230 (ins GPR32:$src, GPR32:$Rn, bitfield32_imm:$ImmR, bfx32_width:$ImmS),
1231 "bfxil\t$Rd, $Rn, $ImmR, $ImmS", [], NoItinerary> {
1232 // As above, no disassembler allowed.
1233 let isAsmParserOnly = 1;
1234 let Constraints = "$src = $Rd";
1237 def BFXILxxii : A64I_bitfield<0b1, 0b01, 0b1, (outs GPR64:$Rd),
1238 (ins GPR64:$src, GPR64:$Rn, bitfield64_imm:$ImmR, bfx64_width:$ImmS),
1239 "bfxil\t$Rd, $Rn, $ImmR, $ImmS", [], NoItinerary> {
1240 // As above, no disassembler allowed.
1241 let isAsmParserOnly = 1;
1242 let Constraints = "$src = $Rd";
1245 // SBFX instructions can do a 1-instruction sign-extension of boolean values.
1246 def : Pat<(sext_inreg GPR64:$Rn, i1), (SBFXxxii GPR64:$Rn, 0, 0)>;
1247 def : Pat<(sext_inreg GPR32:$Rn, i1), (SBFXwwii GPR32:$Rn, 0, 0)>;
1248 def : Pat<(i64 (sext_inreg (anyext GPR32:$Rn), i1)),
1249 (SBFXxxii (SUBREG_TO_REG (i64 0), GPR32:$Rn, sub_32), 0, 0)>;
1251 // UBFX makes sense as an implementation of a 64-bit zero-extension too. Could
1252 // use either 64-bit or 32-bit variant, but 32-bit might be more efficient.
1253 def : Pat<(zext GPR32:$Rn), (SUBREG_TO_REG (i64 0), (UBFXwwii GPR32:$Rn, 0, 31),
1256 //===-------------------------------
1257 // 6. Aliases for bitfield insert instructions
1258 //===-------------------------------
1260 def bfi32_lsb_asmoperand : AsmOperandClass {
1261 let Name = "BFI32LSB";
1262 let PredicateMethod = "isUImm<5>";
1263 let RenderMethod = "addBFILSBOperands<32>";
1264 let DiagnosticType = "UImm5";
1267 def bfi32_lsb : Operand<i64>,
1268 ImmLeaf<i64, [{ return Imm >= 0 && Imm <= 31; }]> {
1269 let PrintMethod = "printBFILSBOperand<32>";
1270 let ParserMatchClass = bfi32_lsb_asmoperand;
1273 def bfi64_lsb_asmoperand : AsmOperandClass {
1274 let Name = "BFI64LSB";
1275 let PredicateMethod = "isUImm<6>";
1276 let RenderMethod = "addBFILSBOperands<64>";
1277 let DiagnosticType = "UImm6";
1280 def bfi64_lsb : Operand<i64>,
1281 ImmLeaf<i64, [{ return Imm >= 0 && Imm <= 63; }]> {
1282 let PrintMethod = "printBFILSBOperand<64>";
1283 let ParserMatchClass = bfi64_lsb_asmoperand;
1286 // Width verification is performed during conversion so width operand can be
1287 // shared between 32/64-bit cases. Still needed for the print method though
1288 // because ImmR encodes "width - 1".
1289 def bfi32_width_asmoperand : AsmOperandClass {
1290 let Name = "BFI32Width";
1291 let PredicateMethod = "isBitfieldWidth<32>";
1292 let RenderMethod = "addBFIWidthOperands";
1293 let DiagnosticType = "Width32";
1296 def bfi32_width : Operand<i64>,
1297 ImmLeaf<i64, [{ return Imm >= 1 && Imm <= 32; }]> {
1298 let PrintMethod = "printBFIWidthOperand";
1299 let ParserMatchClass = bfi32_width_asmoperand;
1302 def bfi64_width_asmoperand : AsmOperandClass {
1303 let Name = "BFI64Width";
1304 let PredicateMethod = "isBitfieldWidth<64>";
1305 let RenderMethod = "addBFIWidthOperands";
1306 let DiagnosticType = "Width64";
1309 def bfi64_width : Operand<i64>,
1310 ImmLeaf<i64, [{ return Imm >= 1 && Imm <= 64; }]> {
1311 let PrintMethod = "printBFIWidthOperand";
1312 let ParserMatchClass = bfi64_width_asmoperand;
1315 multiclass A64I_bitfield_insert<bits<2> opc, string asmop> {
1316 def wwii : A64I_bitfield<0b0, opc, 0b0, (outs GPR32:$Rd),
1317 (ins GPR32:$Rn, bfi32_lsb:$ImmR, bfi32_width:$ImmS),
1318 !strconcat(asmop, "\t$Rd, $Rn, $ImmR, $ImmS"),
1320 // As above, no disassembler allowed.
1321 let isAsmParserOnly = 1;
1324 def xxii : A64I_bitfield<0b1, opc, 0b1, (outs GPR64:$Rd),
1325 (ins GPR64:$Rn, bfi64_lsb:$ImmR, bfi64_width:$ImmS),
1326 !strconcat(asmop, "\t$Rd, $Rn, $ImmR, $ImmS"),
1328 // As above, no disassembler allowed.
1329 let isAsmParserOnly = 1;
1333 defm SBFIZ : A64I_bitfield_insert<0b00, "sbfiz">;
1334 defm UBFIZ : A64I_bitfield_insert<0b10, "ubfiz">;
1337 def BFIwwii : A64I_bitfield<0b0, 0b01, 0b0, (outs GPR32:$Rd),
1338 (ins GPR32:$src, GPR32:$Rn, bfi32_lsb:$ImmR, bfi32_width:$ImmS),
1339 "bfi\t$Rd, $Rn, $ImmR, $ImmS", [], NoItinerary> {
1340 // As above, no disassembler allowed.
1341 let isAsmParserOnly = 1;
1342 let Constraints = "$src = $Rd";
1345 def BFIxxii : A64I_bitfield<0b1, 0b01, 0b1, (outs GPR64:$Rd),
1346 (ins GPR64:$src, GPR64:$Rn, bfi64_lsb:$ImmR, bfi64_width:$ImmS),
1347 "bfi\t$Rd, $Rn, $ImmR, $ImmS", [], NoItinerary> {
1348 // As above, no disassembler allowed.
1349 let isAsmParserOnly = 1;
1350 let Constraints = "$src = $Rd";
1353 //===----------------------------------------------------------------------===//
1354 // Compare and branch (immediate)
1355 //===----------------------------------------------------------------------===//
1356 // Contains: CBZ, CBNZ
1358 class label_asmoperand<int width, int scale> : AsmOperandClass {
1359 let Name = "Label" # width # "_" # scale;
1360 let PredicateMethod = "isLabel<" # width # "," # scale # ">";
1361 let RenderMethod = "addLabelOperands<" # width # ", " # scale # ">";
1362 let DiagnosticType = "Label";
1365 def label_wid19_scal4_asmoperand : label_asmoperand<19, 4>;
1367 // All conditional immediate branches are the same really: 19 signed bits scaled
1368 // by the instruction-size (4).
1369 def bcc_target : Operand<OtherVT> {
1370 // This label is a 19-bit offset from PC, scaled by the instruction-width: 4.
1371 let ParserMatchClass = label_wid19_scal4_asmoperand;
1372 let PrintMethod = "printLabelOperand<19, 4>";
1373 let EncoderMethod = "getLabelOpValue<AArch64::fixup_a64_condbr>";
1374 let OperandType = "OPERAND_PCREL";
1377 multiclass cmpbr_sizes<bit op, string asmop, ImmLeaf SETOP> {
1378 let isBranch = 1, isTerminator = 1 in {
1379 def x : A64I_cmpbr<0b1, op,
1381 (ins GPR64:$Rt, bcc_target:$Label),
1382 !strconcat(asmop,"\t$Rt, $Label"),
1383 [(A64br_cc (A64cmp GPR64:$Rt, 0), SETOP, bb:$Label)],
1386 def w : A64I_cmpbr<0b0, op,
1388 (ins GPR32:$Rt, bcc_target:$Label),
1389 !strconcat(asmop,"\t$Rt, $Label"),
1390 [(A64br_cc (A64cmp GPR32:$Rt, 0), SETOP, bb:$Label)],
1395 defm CBZ : cmpbr_sizes<0b0, "cbz", ImmLeaf<i32, [{
1396 return Imm == A64CC::EQ;
1398 defm CBNZ : cmpbr_sizes<0b1, "cbnz", ImmLeaf<i32, [{
1399 return Imm == A64CC::NE;
1402 //===----------------------------------------------------------------------===//
1403 // Conditional branch (immediate) instructions
1404 //===----------------------------------------------------------------------===//
1407 def cond_code_asmoperand : AsmOperandClass {
1408 let Name = "CondCode";
1409 let DiagnosticType = "CondCode";
1412 def cond_code : Operand<i32>, ImmLeaf<i32, [{
1413 return Imm >= 0 && Imm <= 15;
1415 let PrintMethod = "printCondCodeOperand";
1416 let ParserMatchClass = cond_code_asmoperand;
1419 def Bcc : A64I_condbr<0b0, 0b0, (outs),
1420 (ins cond_code:$Cond, bcc_target:$Label),
1421 "b.$Cond $Label", [(A64br_cc NZCV, (i32 imm:$Cond), bb:$Label)],
1425 let isTerminator = 1;
1428 //===----------------------------------------------------------------------===//
1429 // Conditional compare (immediate) instructions
1430 //===----------------------------------------------------------------------===//
1431 // Contains: CCMN, CCMP
1433 def uimm4_asmoperand : AsmOperandClass {
1435 let PredicateMethod = "isUImm<4>";
1436 let RenderMethod = "addImmOperands";
1437 let DiagnosticType = "UImm4";
1440 def uimm4 : Operand<i32> {
1441 let ParserMatchClass = uimm4_asmoperand;
1444 def uimm5 : Operand<i32> {
1445 let ParserMatchClass = uimm5_asmoperand;
1448 // The only difference between this operand and the one for instructions like
1449 // B.cc is that it's parsed manually. The other get parsed implicitly as part of
1450 // the mnemonic handling.
1451 def cond_code_op_asmoperand : AsmOperandClass {
1452 let Name = "CondCodeOp";
1453 let RenderMethod = "addCondCodeOperands";
1454 let PredicateMethod = "isCondCode";
1455 let ParserMethod = "ParseCondCodeOperand";
1456 let DiagnosticType = "CondCode";
1459 def cond_code_op : Operand<i32> {
1460 let PrintMethod = "printCondCodeOperand";
1461 let ParserMatchClass = cond_code_op_asmoperand;
1464 class A64I_condcmpimmImpl<bit sf, bit op, RegisterClass GPR, string asmop>
1465 : A64I_condcmpimm<sf, op, 0b0, 0b0, 0b1, (outs),
1466 (ins GPR:$Rn, uimm5:$UImm5, uimm4:$NZCVImm, cond_code_op:$Cond),
1467 !strconcat(asmop, "\t$Rn, $UImm5, $NZCVImm, $Cond"),
1472 def CCMNwi : A64I_condcmpimmImpl<0b0, 0b0, GPR32, "ccmn">;
1473 def CCMNxi : A64I_condcmpimmImpl<0b1, 0b0, GPR64, "ccmn">;
1474 def CCMPwi : A64I_condcmpimmImpl<0b0, 0b1, GPR32, "ccmp">;
1475 def CCMPxi : A64I_condcmpimmImpl<0b1, 0b1, GPR64, "ccmp">;
1477 //===----------------------------------------------------------------------===//
1478 // Conditional compare (register) instructions
1479 //===----------------------------------------------------------------------===//
1480 // Contains: CCMN, CCMP
1482 class A64I_condcmpregImpl<bit sf, bit op, RegisterClass GPR, string asmop>
1483 : A64I_condcmpreg<sf, op, 0b0, 0b0, 0b1,
1485 (ins GPR:$Rn, GPR:$Rm, uimm4:$NZCVImm, cond_code_op:$Cond),
1486 !strconcat(asmop, "\t$Rn, $Rm, $NZCVImm, $Cond"),
1491 def CCMNww : A64I_condcmpregImpl<0b0, 0b0, GPR32, "ccmn">;
1492 def CCMNxx : A64I_condcmpregImpl<0b1, 0b0, GPR64, "ccmn">;
1493 def CCMPww : A64I_condcmpregImpl<0b0, 0b1, GPR32, "ccmp">;
1494 def CCMPxx : A64I_condcmpregImpl<0b1, 0b1, GPR64, "ccmp">;
1496 //===----------------------------------------------------------------------===//
1497 // Conditional select instructions
1498 //===----------------------------------------------------------------------===//
1499 // Contains: CSEL, CSINC, CSINV, CSNEG + aliases CSET, CSETM, CINC, CINV, CNEG
1501 // Condition code which is encoded as the inversion (semantically rather than
1502 // bitwise) in the instruction.
1503 def inv_cond_code_op_asmoperand : AsmOperandClass {
1504 let Name = "InvCondCodeOp";
1505 let RenderMethod = "addInvCondCodeOperands";
1506 let PredicateMethod = "isCondCode";
1507 let ParserMethod = "ParseCondCodeOperand";
1508 let DiagnosticType = "CondCode";
1511 def inv_cond_code_op : Operand<i32> {
1512 let ParserMatchClass = inv_cond_code_op_asmoperand;
1515 // Having a separate operand for the selectable use-case is debatable, but gives
1516 // consistency with cond_code.
1517 def inv_cond_XFORM : SDNodeXForm<imm, [{
1518 A64CC::CondCodes CC = static_cast<A64CC::CondCodes>(N->getZExtValue());
1519 return CurDAG->getTargetConstant(A64InvertCondCode(CC), MVT::i32);
1523 : ImmLeaf<i32, [{ return Imm >= 0 && Imm <= 15; }], inv_cond_XFORM>;
1526 multiclass A64I_condselSizes<bit op, bits<2> op2, string asmop,
1527 SDPatternOperator select> {
1528 let Uses = [NZCV] in {
1529 def wwwc : A64I_condsel<0b0, op, 0b0, op2,
1531 (ins GPR32:$Rn, GPR32:$Rm, cond_code_op:$Cond),
1532 !strconcat(asmop, "\t$Rd, $Rn, $Rm, $Cond"),
1533 [(set GPR32:$Rd, (select GPR32:$Rn, GPR32:$Rm))],
1537 def xxxc : A64I_condsel<0b1, op, 0b0, op2,
1539 (ins GPR64:$Rn, GPR64:$Rm, cond_code_op:$Cond),
1540 !strconcat(asmop, "\t$Rd, $Rn, $Rm, $Cond"),
1541 [(set GPR64:$Rd, (select GPR64:$Rn, GPR64:$Rm))],
1547 : PatFrag<(ops node:$lhs, node:$rhs),
1548 (A64select_cc NZCV, node:$lhs, node:$rhs, (i32 imm:$Cond))>;
1550 class complex_select<SDPatternOperator opnode>
1551 : PatFrag<(ops node:$lhs, node:$rhs),
1552 (A64select_cc NZCV, node:$lhs, (opnode node:$rhs), (i32 imm:$Cond))>;
1555 defm CSEL : A64I_condselSizes<0b0, 0b00, "csel", simple_select>;
1556 defm CSINC : A64I_condselSizes<0b0, 0b01, "csinc",
1557 complex_select<PatFrag<(ops node:$val),
1558 (add node:$val, 1)>>>;
1559 defm CSINV : A64I_condselSizes<0b1, 0b00, "csinv", complex_select<not>>;
1560 defm CSNEG : A64I_condselSizes<0b1, 0b01, "csneg", complex_select<ineg>>;
1562 // Now the instruction aliases, which fit nicely into LLVM's model:
1564 def : InstAlias<"cset $Rd, $Cond",
1565 (CSINCwwwc GPR32:$Rd, WZR, WZR, inv_cond_code_op:$Cond)>;
1566 def : InstAlias<"cset $Rd, $Cond",
1567 (CSINCxxxc GPR64:$Rd, XZR, XZR, inv_cond_code_op:$Cond)>;
1568 def : InstAlias<"csetm $Rd, $Cond",
1569 (CSINVwwwc GPR32:$Rd, WZR, WZR, inv_cond_code_op:$Cond)>;
1570 def : InstAlias<"csetm $Rd, $Cond",
1571 (CSINVxxxc GPR64:$Rd, XZR, XZR, inv_cond_code_op:$Cond)>;
1572 def : InstAlias<"cinc $Rd, $Rn, $Cond",
1573 (CSINCwwwc GPR32:$Rd, GPR32:$Rn, GPR32:$Rn, inv_cond_code_op:$Cond)>;
1574 def : InstAlias<"cinc $Rd, $Rn, $Cond",
1575 (CSINCxxxc GPR64:$Rd, GPR64:$Rn, GPR64:$Rn, inv_cond_code_op:$Cond)>;
1576 def : InstAlias<"cinv $Rd, $Rn, $Cond",
1577 (CSINVwwwc GPR32:$Rd, GPR32:$Rn, GPR32:$Rn, inv_cond_code_op:$Cond)>;
1578 def : InstAlias<"cinv $Rd, $Rn, $Cond",
1579 (CSINVxxxc GPR64:$Rd, GPR64:$Rn, GPR64:$Rn, inv_cond_code_op:$Cond)>;
1580 def : InstAlias<"cneg $Rd, $Rn, $Cond",
1581 (CSNEGwwwc GPR32:$Rd, GPR32:$Rn, GPR32:$Rn, inv_cond_code_op:$Cond)>;
1582 def : InstAlias<"cneg $Rd, $Rn, $Cond",
1583 (CSNEGxxxc GPR64:$Rd, GPR64:$Rn, GPR64:$Rn, inv_cond_code_op:$Cond)>;
1585 // Finally some helper patterns.
1587 // For CSET (a.k.a. zero-extension of icmp)
1588 def : Pat<(A64select_cc NZCV, 0, 1, cond_code:$Cond),
1589 (CSINCwwwc WZR, WZR, cond_code:$Cond)>;
1590 def : Pat<(A64select_cc NZCV, 1, 0, inv_cond_code:$Cond),
1591 (CSINCwwwc WZR, WZR, inv_cond_code:$Cond)>;
1593 def : Pat<(A64select_cc NZCV, 0, 1, cond_code:$Cond),
1594 (CSINCxxxc XZR, XZR, cond_code:$Cond)>;
1595 def : Pat<(A64select_cc NZCV, 1, 0, inv_cond_code:$Cond),
1596 (CSINCxxxc XZR, XZR, inv_cond_code:$Cond)>;
1598 // For CSETM (a.k.a. sign-extension of icmp)
1599 def : Pat<(A64select_cc NZCV, 0, -1, cond_code:$Cond),
1600 (CSINVwwwc WZR, WZR, cond_code:$Cond)>;
1601 def : Pat<(A64select_cc NZCV, -1, 0, inv_cond_code:$Cond),
1602 (CSINVwwwc WZR, WZR, inv_cond_code:$Cond)>;
1604 def : Pat<(A64select_cc NZCV, 0, -1, cond_code:$Cond),
1605 (CSINVxxxc XZR, XZR, cond_code:$Cond)>;
1606 def : Pat<(A64select_cc NZCV, -1, 0, inv_cond_code:$Cond),
1607 (CSINVxxxc XZR, XZR, inv_cond_code:$Cond)>;
1609 // CINC, CINV and CNEG get dealt with automatically, which leaves the issue of
1610 // commutativity. The instructions are to complex for isCommutable to be used,
1611 // so we have to create the patterns manually:
1613 // No commutable pattern for CSEL since the commuted version is isomorphic.
1616 def :Pat<(A64select_cc NZCV, (add GPR32:$Rm, 1), GPR32:$Rn,
1617 inv_cond_code:$Cond),
1618 (CSINCwwwc GPR32:$Rn, GPR32:$Rm, inv_cond_code:$Cond)>;
1619 def :Pat<(A64select_cc NZCV, (add GPR64:$Rm, 1), GPR64:$Rn,
1620 inv_cond_code:$Cond),
1621 (CSINCxxxc GPR64:$Rn, GPR64:$Rm, inv_cond_code:$Cond)>;
1624 def :Pat<(A64select_cc NZCV, (not GPR32:$Rm), GPR32:$Rn, inv_cond_code:$Cond),
1625 (CSINVwwwc GPR32:$Rn, GPR32:$Rm, inv_cond_code:$Cond)>;
1626 def :Pat<(A64select_cc NZCV, (not GPR64:$Rm), GPR64:$Rn, inv_cond_code:$Cond),
1627 (CSINVxxxc GPR64:$Rn, GPR64:$Rm, inv_cond_code:$Cond)>;
1630 def :Pat<(A64select_cc NZCV, (ineg GPR32:$Rm), GPR32:$Rn, inv_cond_code:$Cond),
1631 (CSNEGwwwc GPR32:$Rn, GPR32:$Rm, inv_cond_code:$Cond)>;
1632 def :Pat<(A64select_cc NZCV, (ineg GPR64:$Rm), GPR64:$Rn, inv_cond_code:$Cond),
1633 (CSNEGxxxc GPR64:$Rn, GPR64:$Rm, inv_cond_code:$Cond)>;
1635 //===----------------------------------------------------------------------===//
1636 // Data Processing (1 source) instructions
1637 //===----------------------------------------------------------------------===//
1638 // Contains: RBIT, REV16, REV, REV32, CLZ, CLS.
1640 // We define an unary operator which always fails. We will use this to
1641 // define unary operators that cannot be matched.
1643 class A64I_dp_1src_impl<bit sf, bits<6> opcode, string asmop,
1644 list<dag> patterns, RegisterClass GPRrc,
1645 InstrItinClass itin>:
1650 !strconcat(asmop, "\t$Rd, $Rn"),
1656 multiclass A64I_dp_1src <bits<6> opcode, string asmop> {
1657 let hasSideEffects = 0 in {
1658 def ww : A64I_dp_1src_impl<0b0, opcode, asmop, [], GPR32, NoItinerary>;
1659 def xx : A64I_dp_1src_impl<0b1, opcode, asmop, [], GPR64, NoItinerary>;
1663 defm RBIT : A64I_dp_1src<0b000000, "rbit">;
1664 defm CLS : A64I_dp_1src<0b000101, "cls">;
1665 defm CLZ : A64I_dp_1src<0b000100, "clz">;
1667 def : Pat<(ctlz GPR32:$Rn), (CLZww GPR32:$Rn)>;
1668 def : Pat<(ctlz GPR64:$Rn), (CLZxx GPR64:$Rn)>;
1669 def : Pat<(ctlz_zero_undef GPR32:$Rn), (CLZww GPR32:$Rn)>;
1670 def : Pat<(ctlz_zero_undef GPR64:$Rn), (CLZxx GPR64:$Rn)>;
1672 def : Pat<(cttz GPR32:$Rn), (CLZww (RBITww GPR32:$Rn))>;
1673 def : Pat<(cttz GPR64:$Rn), (CLZxx (RBITxx GPR64:$Rn))>;
1674 def : Pat<(cttz_zero_undef GPR32:$Rn), (CLZww (RBITww GPR32:$Rn))>;
1675 def : Pat<(cttz_zero_undef GPR64:$Rn), (CLZxx (RBITxx GPR64:$Rn))>;
1678 def REVww : A64I_dp_1src_impl<0b0, 0b000010, "rev",
1679 [(set GPR32:$Rd, (bswap GPR32:$Rn))],
1680 GPR32, NoItinerary>;
1681 def REVxx : A64I_dp_1src_impl<0b1, 0b000011, "rev",
1682 [(set GPR64:$Rd, (bswap GPR64:$Rn))],
1683 GPR64, NoItinerary>;
1684 def REV32xx : A64I_dp_1src_impl<0b1, 0b000010, "rev32",
1685 [(set GPR64:$Rd, (bswap (rotr GPR64:$Rn, (i64 32))))],
1686 GPR64, NoItinerary>;
1687 def REV16ww : A64I_dp_1src_impl<0b0, 0b000001, "rev16",
1688 [(set GPR32:$Rd, (bswap (rotr GPR32:$Rn, (i64 16))))],
1691 def REV16xx : A64I_dp_1src_impl<0b1, 0b000001, "rev16", [], GPR64, NoItinerary>;
1693 //===----------------------------------------------------------------------===//
1694 // Data Processing (2 sources) instructions
1695 //===----------------------------------------------------------------------===//
1696 // Contains: CRC32C?[BHWX], UDIV, SDIV, LSLV, LSRV, ASRV, RORV + aliases LSL,
1700 class dp_2src_impl<bit sf, bits<6> opcode, string asmop, list<dag> patterns,
1701 RegisterClass GPRsp,
1702 InstrItinClass itin>:
1706 !strconcat(asmop, "\t$Rd, $Rn, $Rm"),
1708 (ins GPRsp:$Rn, GPRsp:$Rm),
1712 multiclass dp_2src_crc<bit c, string asmop> {
1713 def B_www : dp_2src_impl<0b0, {0, 1, 0, c, 0, 0},
1714 !strconcat(asmop, "b"), [], GPR32, NoItinerary>;
1715 def H_www : dp_2src_impl<0b0, {0, 1, 0, c, 0, 1},
1716 !strconcat(asmop, "h"), [], GPR32, NoItinerary>;
1717 def W_www : dp_2src_impl<0b0, {0, 1, 0, c, 1, 0},
1718 !strconcat(asmop, "w"), [], GPR32, NoItinerary>;
1719 def X_wwx : A64I_dp_2src<0b1, {0, 1, 0, c, 1, 1}, 0b0,
1720 !strconcat(asmop, "x\t$Rd, $Rn, $Rm"),
1721 (outs GPR32:$Rd), (ins GPR32:$Rn, GPR64:$Rm), [],
1725 multiclass dp_2src_zext <bits<6> opcode, string asmop, SDPatternOperator op> {
1726 def www : dp_2src_impl<0b0,
1730 (op GPR32:$Rn, (i64 (zext GPR32:$Rm))))],
1733 def xxx : dp_2src_impl<0b1,
1736 [(set GPR64:$Rd, (op GPR64:$Rn, GPR64:$Rm))],
1742 multiclass dp_2src <bits<6> opcode, string asmop, SDPatternOperator op> {
1743 def www : dp_2src_impl<0b0,
1746 [(set GPR32:$Rd, (op GPR32:$Rn, GPR32:$Rm))],
1749 def xxx : dp_2src_impl<0b1,
1752 [(set GPR64:$Rd, (op GPR64:$Rn, GPR64:$Rm))],
1757 // Here we define the data processing 2 source instructions.
1758 defm CRC32 : dp_2src_crc<0b0, "crc32">;
1759 defm CRC32C : dp_2src_crc<0b1, "crc32c">;
1761 defm UDIV : dp_2src<0b000010, "udiv", udiv>;
1762 defm SDIV : dp_2src<0b000011, "sdiv", sdiv>;
1764 defm LSLV : dp_2src_zext<0b001000, "lsl", shl>;
1765 defm LSRV : dp_2src_zext<0b001001, "lsr", srl>;
1766 defm ASRV : dp_2src_zext<0b001010, "asr", sra>;
1767 defm RORV : dp_2src_zext<0b001011, "ror", rotr>;
1769 // Extra patterns for an incoming 64-bit value for a 32-bit
1770 // operation. Since the LLVM operations are undefined (as in C) if the
1771 // RHS is out of range, it's perfectly permissible to discard the high
1772 // bits of the GPR64.
1773 def : Pat<(shl GPR32:$Rn, GPR64:$Rm),
1774 (LSLVwww GPR32:$Rn, (EXTRACT_SUBREG GPR64:$Rm, sub_32))>;
1775 def : Pat<(srl GPR32:$Rn, GPR64:$Rm),
1776 (LSRVwww GPR32:$Rn, (EXTRACT_SUBREG GPR64:$Rm, sub_32))>;
1777 def : Pat<(sra GPR32:$Rn, GPR64:$Rm),
1778 (ASRVwww GPR32:$Rn, (EXTRACT_SUBREG GPR64:$Rm, sub_32))>;
1779 def : Pat<(rotr GPR32:$Rn, GPR64:$Rm),
1780 (RORVwww GPR32:$Rn, (EXTRACT_SUBREG GPR64:$Rm, sub_32))>;
1782 // Here we define the aliases for the data processing 2 source instructions.
1783 def LSL_mnemonic : MnemonicAlias<"lslv", "lsl">;
1784 def LSR_mnemonic : MnemonicAlias<"lsrv", "lsr">;
1785 def ASR_menmonic : MnemonicAlias<"asrv", "asr">;
1786 def ROR_menmonic : MnemonicAlias<"rorv", "ror">;
1788 //===----------------------------------------------------------------------===//
1789 // Data Processing (3 sources) instructions
1790 //===----------------------------------------------------------------------===//
1791 // Contains: MADD, MSUB, SMADDL, SMSUBL, SMULH, UMADDL, UMSUBL, UMULH
1792 // + aliases MUL, MNEG, SMULL, SMNEGL, UMULL, UMNEGL
1794 class A64I_dp3_4operand<bit sf, bits<6> opcode, RegisterClass AccReg,
1795 RegisterClass SrcReg, string asmop, dag pattern>
1796 : A64I_dp3<sf, opcode,
1797 (outs AccReg:$Rd), (ins SrcReg:$Rn, SrcReg:$Rm, AccReg:$Ra),
1798 !strconcat(asmop, "\t$Rd, $Rn, $Rm, $Ra"),
1799 [(set AccReg:$Rd, pattern)], NoItinerary> {
1800 RegisterClass AccGPR = AccReg;
1801 RegisterClass SrcGPR = SrcReg;
1804 def MADDwwww : A64I_dp3_4operand<0b0, 0b000000, GPR32, GPR32, "madd",
1805 (add GPR32:$Ra, (mul GPR32:$Rn, GPR32:$Rm))>;
1806 def MADDxxxx : A64I_dp3_4operand<0b1, 0b000000, GPR64, GPR64, "madd",
1807 (add GPR64:$Ra, (mul GPR64:$Rn, GPR64:$Rm))>;
1809 def MSUBwwww : A64I_dp3_4operand<0b0, 0b000001, GPR32, GPR32, "msub",
1810 (sub GPR32:$Ra, (mul GPR32:$Rn, GPR32:$Rm))>;
1811 def MSUBxxxx : A64I_dp3_4operand<0b1, 0b000001, GPR64, GPR64, "msub",
1812 (sub GPR64:$Ra, (mul GPR64:$Rn, GPR64:$Rm))>;
1814 def SMADDLxwwx : A64I_dp3_4operand<0b1, 0b000010, GPR64, GPR32, "smaddl",
1815 (add GPR64:$Ra, (mul (i64 (sext GPR32:$Rn)), (sext GPR32:$Rm)))>;
1816 def SMSUBLxwwx : A64I_dp3_4operand<0b1, 0b000011, GPR64, GPR32, "smsubl",
1817 (sub GPR64:$Ra, (mul (i64 (sext GPR32:$Rn)), (sext GPR32:$Rm)))>;
1819 def UMADDLxwwx : A64I_dp3_4operand<0b1, 0b001010, GPR64, GPR32, "umaddl",
1820 (add GPR64:$Ra, (mul (i64 (zext GPR32:$Rn)), (zext GPR32:$Rm)))>;
1821 def UMSUBLxwwx : A64I_dp3_4operand<0b1, 0b001011, GPR64, GPR32, "umsubl",
1822 (sub GPR64:$Ra, (mul (i64 (zext GPR32:$Rn)), (zext GPR32:$Rm)))>;
1824 let isCommutable = 1, PostEncoderMethod = "fixMulHigh" in {
1825 def UMULHxxx : A64I_dp3<0b1, 0b001100, (outs GPR64:$Rd),
1826 (ins GPR64:$Rn, GPR64:$Rm),
1827 "umulh\t$Rd, $Rn, $Rm",
1828 [(set GPR64:$Rd, (mulhu GPR64:$Rn, GPR64:$Rm))],
1831 def SMULHxxx : A64I_dp3<0b1, 0b000100, (outs GPR64:$Rd),
1832 (ins GPR64:$Rn, GPR64:$Rm),
1833 "smulh\t$Rd, $Rn, $Rm",
1834 [(set GPR64:$Rd, (mulhs GPR64:$Rn, GPR64:$Rm))],
1838 multiclass A64I_dp3_3operand<string asmop, A64I_dp3_4operand INST,
1839 Register ZR, dag pattern> {
1840 def : InstAlias<asmop # " $Rd, $Rn, $Rm",
1841 (INST INST.AccGPR:$Rd, INST.SrcGPR:$Rn, INST.SrcGPR:$Rm, ZR)>;
1843 def : Pat<pattern, (INST INST.SrcGPR:$Rn, INST.SrcGPR:$Rm, ZR)>;
1846 defm : A64I_dp3_3operand<"mul", MADDwwww, WZR, (mul GPR32:$Rn, GPR32:$Rm)>;
1847 defm : A64I_dp3_3operand<"mul", MADDxxxx, XZR, (mul GPR64:$Rn, GPR64:$Rm)>;
1849 defm : A64I_dp3_3operand<"mneg", MSUBwwww, WZR,
1850 (sub 0, (mul GPR32:$Rn, GPR32:$Rm))>;
1851 defm : A64I_dp3_3operand<"mneg", MSUBxxxx, XZR,
1852 (sub 0, (mul GPR64:$Rn, GPR64:$Rm))>;
1854 defm : A64I_dp3_3operand<"smull", SMADDLxwwx, XZR,
1855 (mul (i64 (sext GPR32:$Rn)), (sext GPR32:$Rm))>;
1856 defm : A64I_dp3_3operand<"smnegl", SMSUBLxwwx, XZR,
1857 (sub 0, (mul (i64 (sext GPR32:$Rn)), (sext GPR32:$Rm)))>;
1859 defm : A64I_dp3_3operand<"umull", UMADDLxwwx, XZR,
1860 (mul (i64 (zext GPR32:$Rn)), (zext GPR32:$Rm))>;
1861 defm : A64I_dp3_3operand<"umnegl", UMSUBLxwwx, XZR,
1862 (sub 0, (mul (i64 (zext GPR32:$Rn)), (zext GPR32:$Rm)))>;
1865 //===----------------------------------------------------------------------===//
1866 // Exception generation
1867 //===----------------------------------------------------------------------===//
1868 // Contains: SVC, HVC, SMC, BRK, HLT, DCPS1, DCPS2, DCPS3
1870 def uimm16_asmoperand : AsmOperandClass {
1871 let Name = "UImm16";
1872 let PredicateMethod = "isUImm<16>";
1873 let RenderMethod = "addImmOperands";
1874 let DiagnosticType = "UImm16";
1877 def uimm16 : Operand<i32> {
1878 let ParserMatchClass = uimm16_asmoperand;
1881 class A64I_exceptImpl<bits<3> opc, bits<2> ll, string asmop>
1882 : A64I_exception<opc, 0b000, ll, (outs), (ins uimm16:$UImm16),
1883 !strconcat(asmop, "\t$UImm16"), [], NoItinerary> {
1885 let isTerminator = 1;
1888 def SVCi : A64I_exceptImpl<0b000, 0b01, "svc">;
1889 def HVCi : A64I_exceptImpl<0b000, 0b10, "hvc">;
1890 def SMCi : A64I_exceptImpl<0b000, 0b11, "smc">;
1891 def BRKi : A64I_exceptImpl<0b001, 0b00, "brk">;
1892 def HLTi : A64I_exceptImpl<0b010, 0b00, "hlt">;
1894 def DCPS1i : A64I_exceptImpl<0b101, 0b01, "dcps1">;
1895 def DCPS2i : A64I_exceptImpl<0b101, 0b10, "dcps2">;
1896 def DCPS3i : A64I_exceptImpl<0b101, 0b11, "dcps3">;
1898 // The immediate is optional for the DCPS instructions, defaulting to 0.
1899 def : InstAlias<"dcps1", (DCPS1i 0)>;
1900 def : InstAlias<"dcps2", (DCPS2i 0)>;
1901 def : InstAlias<"dcps3", (DCPS3i 0)>;
1903 //===----------------------------------------------------------------------===//
1904 // Extract (immediate)
1905 //===----------------------------------------------------------------------===//
1906 // Contains: EXTR + alias ROR
1908 def EXTRwwwi : A64I_extract<0b0, 0b000, 0b0,
1910 (ins GPR32:$Rn, GPR32:$Rm, bitfield32_imm:$LSB),
1911 "extr\t$Rd, $Rn, $Rm, $LSB",
1913 (A64Extr GPR32:$Rn, GPR32:$Rm, imm:$LSB))],
1915 def EXTRxxxi : A64I_extract<0b1, 0b000, 0b1,
1917 (ins GPR64:$Rn, GPR64:$Rm, bitfield64_imm:$LSB),
1918 "extr\t$Rd, $Rn, $Rm, $LSB",
1920 (A64Extr GPR64:$Rn, GPR64:$Rm, imm:$LSB))],
1923 def : InstAlias<"ror $Rd, $Rs, $LSB",
1924 (EXTRwwwi GPR32:$Rd, GPR32:$Rs, GPR32:$Rs, bitfield32_imm:$LSB)>;
1925 def : InstAlias<"ror $Rd, $Rs, $LSB",
1926 (EXTRxxxi GPR64:$Rd, GPR64:$Rs, GPR64:$Rs, bitfield64_imm:$LSB)>;
1928 def : Pat<(rotr GPR32:$Rn, bitfield32_imm:$LSB),
1929 (EXTRwwwi GPR32:$Rn, GPR32:$Rn, bitfield32_imm:$LSB)>;
1930 def : Pat<(rotr GPR64:$Rn, bitfield64_imm:$LSB),
1931 (EXTRxxxi GPR64:$Rn, GPR64:$Rn, bitfield64_imm:$LSB)>;
1933 //===----------------------------------------------------------------------===//
1934 // Floating-point compare instructions
1935 //===----------------------------------------------------------------------===//
1936 // Contains: FCMP, FCMPE
1938 def fpzero_asmoperand : AsmOperandClass {
1939 let Name = "FPZero";
1940 let ParserMethod = "ParseFPImmOperand";
1941 let DiagnosticType = "FPZero";
1944 def fpz32 : Operand<f32>,
1945 ComplexPattern<f32, 1, "SelectFPZeroOperand", [fpimm]> {
1946 let ParserMatchClass = fpzero_asmoperand;
1947 let PrintMethod = "printFPZeroOperand";
1950 def fpz64 : Operand<f64>,
1951 ComplexPattern<f64, 1, "SelectFPZeroOperand", [fpimm]> {
1952 let ParserMatchClass = fpzero_asmoperand;
1953 let PrintMethod = "printFPZeroOperand";
1956 multiclass A64I_fpcmpSignal<bits<2> type, bit imm, dag ins, string asmop2,
1958 def _quiet : A64I_fpcmp<0b0, 0b0, type, 0b00, {0b0, imm, 0b0, 0b0, 0b0},
1959 (outs), ins, !strconcat("fcmp\t$Rn, ", asmop2),
1960 [pattern], NoItinerary> {
1964 def _sig : A64I_fpcmp<0b0, 0b0, type, 0b00, {0b1, imm, 0b0, 0b0, 0b0},
1965 (outs), ins, !strconcat("fcmpe\t$Rn, ", asmop2),
1971 defm FCMPss : A64I_fpcmpSignal<0b00, 0b0, (ins FPR32:$Rn, FPR32:$Rm), "$Rm",
1972 (set NZCV, (A64cmp (f32 FPR32:$Rn), FPR32:$Rm))>;
1973 defm FCMPdd : A64I_fpcmpSignal<0b01, 0b0, (ins FPR64:$Rn, FPR64:$Rm), "$Rm",
1974 (set NZCV, (A64cmp (f64 FPR64:$Rn), FPR64:$Rm))>;
1976 // What would be Rm should be written as 0, but anything is valid for
1977 // disassembly so we can't set the bits
1978 let PostEncoderMethod = "fixFCMPImm" in {
1979 defm FCMPsi : A64I_fpcmpSignal<0b00, 0b1, (ins FPR32:$Rn, fpz32:$Imm), "$Imm",
1980 (set NZCV, (A64cmp (f32 FPR32:$Rn), fpz32:$Imm))>;
1982 defm FCMPdi : A64I_fpcmpSignal<0b01, 0b1, (ins FPR64:$Rn, fpz64:$Imm), "$Imm",
1983 (set NZCV, (A64cmp (f64 FPR64:$Rn), fpz64:$Imm))>;
1987 //===----------------------------------------------------------------------===//
1988 // Floating-point conditional compare instructions
1989 //===----------------------------------------------------------------------===//
1990 // Contains: FCCMP, FCCMPE
1992 class A64I_fpccmpImpl<bits<2> type, bit op, RegisterClass FPR, string asmop>
1993 : A64I_fpccmp<0b0, 0b0, type, op,
1995 (ins FPR:$Rn, FPR:$Rm, uimm4:$NZCVImm, cond_code_op:$Cond),
1996 !strconcat(asmop, "\t$Rn, $Rm, $NZCVImm, $Cond"),
2001 def FCCMPss : A64I_fpccmpImpl<0b00, 0b0, FPR32, "fccmp">;
2002 def FCCMPEss : A64I_fpccmpImpl<0b00, 0b1, FPR32, "fccmpe">;
2003 def FCCMPdd : A64I_fpccmpImpl<0b01, 0b0, FPR64, "fccmp">;
2004 def FCCMPEdd : A64I_fpccmpImpl<0b01, 0b1, FPR64, "fccmpe">;
2006 //===----------------------------------------------------------------------===//
2007 // Floating-point conditional select instructions
2008 //===----------------------------------------------------------------------===//
2011 let Uses = [NZCV] in {
2012 def FCSELsssc : A64I_fpcondsel<0b0, 0b0, 0b00, (outs FPR32:$Rd),
2013 (ins FPR32:$Rn, FPR32:$Rm, cond_code_op:$Cond),
2014 "fcsel\t$Rd, $Rn, $Rm, $Cond",
2016 (simple_select (f32 FPR32:$Rn),
2021 def FCSELdddc : A64I_fpcondsel<0b0, 0b0, 0b01, (outs FPR64:$Rd),
2022 (ins FPR64:$Rn, FPR64:$Rm, cond_code_op:$Cond),
2023 "fcsel\t$Rd, $Rn, $Rm, $Cond",
2025 (simple_select (f64 FPR64:$Rn),
2030 //===----------------------------------------------------------------------===//
2031 // Floating-point data-processing (1 source)
2032 //===----------------------------------------------------------------------===//
2033 // Contains: FMOV, FABS, FNEG, FSQRT, FCVT, FRINT[NPMZAXI].
2035 def FPNoUnop : PatFrag<(ops node:$val), (fneg node:$val),
2036 [{ (void)N; return false; }]>;
2038 // First we do the fairly trivial bunch with uniform "OP s, s" and "OP d, d"
2039 // syntax. Default to no pattern because most are odd enough not to have one.
2040 multiclass A64I_fpdp1sizes<bits<6> opcode, string asmstr,
2041 SDPatternOperator opnode = FPNoUnop> {
2042 def ss : A64I_fpdp1<0b0, 0b0, 0b00, opcode, (outs FPR32:$Rd), (ins FPR32:$Rn),
2043 !strconcat(asmstr, "\t$Rd, $Rn"),
2044 [(set (f32 FPR32:$Rd), (opnode FPR32:$Rn))],
2047 def dd : A64I_fpdp1<0b0, 0b0, 0b01, opcode, (outs FPR64:$Rd), (ins FPR64:$Rn),
2048 !strconcat(asmstr, "\t$Rd, $Rn"),
2049 [(set (f64 FPR64:$Rd), (opnode FPR64:$Rn))],
2053 defm FMOV : A64I_fpdp1sizes<0b000000, "fmov">;
2054 defm FABS : A64I_fpdp1sizes<0b000001, "fabs", fabs>;
2055 defm FNEG : A64I_fpdp1sizes<0b000010, "fneg", fneg>;
2056 defm FSQRT : A64I_fpdp1sizes<0b000011, "fsqrt", fsqrt>;
2058 defm FRINTN : A64I_fpdp1sizes<0b001000, "frintn">;
2059 defm FRINTP : A64I_fpdp1sizes<0b001001, "frintp", fceil>;
2060 defm FRINTM : A64I_fpdp1sizes<0b001010, "frintm", ffloor>;
2061 defm FRINTZ : A64I_fpdp1sizes<0b001011, "frintz", ftrunc>;
2062 defm FRINTA : A64I_fpdp1sizes<0b001100, "frinta">;
2063 defm FRINTX : A64I_fpdp1sizes<0b001110, "frintx", frint>;
2064 defm FRINTI : A64I_fpdp1sizes<0b001111, "frinti", fnearbyint>;
2066 // The FCVT instrucitons have different source and destination register-types,
2067 // but the fields are uniform everywhere a D-register (say) crops up. Package
2068 // this information in a Record.
2069 class FCVTRegType<RegisterClass rc, bits<2> fld, ValueType vt> {
2070 RegisterClass Class = rc;
2076 def FCVT16 : FCVTRegType<FPR16, 0b11, f16>;
2077 def FCVT32 : FCVTRegType<FPR32, 0b00, f32>;
2078 def FCVT64 : FCVTRegType<FPR64, 0b01, f64>;
2080 class A64I_fpdp1_fcvt<FCVTRegType DestReg, FCVTRegType SrcReg, SDNode opnode>
2081 : A64I_fpdp1<0b0, 0b0, {SrcReg.t1, SrcReg.t0},
2082 {0,0,0,1, DestReg.t1, DestReg.t0},
2083 (outs DestReg.Class:$Rd), (ins SrcReg.Class:$Rn),
2085 [(set (DestReg.VT DestReg.Class:$Rd),
2086 (opnode (SrcReg.VT SrcReg.Class:$Rn)))], NoItinerary>;
2088 def FCVTds : A64I_fpdp1_fcvt<FCVT64, FCVT32, fextend>;
2089 def FCVThs : A64I_fpdp1_fcvt<FCVT16, FCVT32, fround>;
2090 def FCVTsd : A64I_fpdp1_fcvt<FCVT32, FCVT64, fround>;
2091 def FCVThd : A64I_fpdp1_fcvt<FCVT16, FCVT64, fround>;
2092 def FCVTsh : A64I_fpdp1_fcvt<FCVT32, FCVT16, fextend>;
2093 def FCVTdh : A64I_fpdp1_fcvt<FCVT64, FCVT16, fextend>;
2096 //===----------------------------------------------------------------------===//
2097 // Floating-point data-processing (2 sources) instructions
2098 //===----------------------------------------------------------------------===//
2099 // Contains: FMUL, FDIV, FADD, FSUB, FMAX, FMIN, FMAXNM, FMINNM, FNMUL
2101 def FPNoBinop : PatFrag<(ops node:$lhs, node:$rhs), (fadd node:$lhs, node:$rhs),
2102 [{ (void)N; return false; }]>;
2104 multiclass A64I_fpdp2sizes<bits<4> opcode, string asmstr,
2105 SDPatternOperator opnode> {
2106 def sss : A64I_fpdp2<0b0, 0b0, 0b00, opcode,
2108 (ins FPR32:$Rn, FPR32:$Rm),
2109 !strconcat(asmstr, "\t$Rd, $Rn, $Rm"),
2110 [(set (f32 FPR32:$Rd), (opnode FPR32:$Rn, FPR32:$Rm))],
2113 def ddd : A64I_fpdp2<0b0, 0b0, 0b01, opcode,
2115 (ins FPR64:$Rn, FPR64:$Rm),
2116 !strconcat(asmstr, "\t$Rd, $Rn, $Rm"),
2117 [(set (f64 FPR64:$Rd), (opnode FPR64:$Rn, FPR64:$Rm))],
2121 let isCommutable = 1 in {
2122 defm FMUL : A64I_fpdp2sizes<0b0000, "fmul", fmul>;
2123 defm FADD : A64I_fpdp2sizes<0b0010, "fadd", fadd>;
2125 // No patterns for these.
2126 defm FMAX : A64I_fpdp2sizes<0b0100, "fmax", FPNoBinop>;
2127 defm FMIN : A64I_fpdp2sizes<0b0101, "fmin", FPNoBinop>;
2128 defm FMAXNM : A64I_fpdp2sizes<0b0110, "fmaxnm", FPNoBinop>;
2129 defm FMINNM : A64I_fpdp2sizes<0b0111, "fminnm", FPNoBinop>;
2131 defm FNMUL : A64I_fpdp2sizes<0b1000, "fnmul",
2132 PatFrag<(ops node:$lhs, node:$rhs),
2133 (fneg (fmul node:$lhs, node:$rhs))> >;
2136 defm FDIV : A64I_fpdp2sizes<0b0001, "fdiv", fdiv>;
2137 defm FSUB : A64I_fpdp2sizes<0b0011, "fsub", fsub>;
2139 //===----------------------------------------------------------------------===//
2140 // Floating-point data-processing (3 sources) instructions
2141 //===----------------------------------------------------------------------===//
2142 // Contains: FMADD, FMSUB, FNMADD, FNMSUB
2144 def fmsub : PatFrag<(ops node:$Rn, node:$Rm, node:$Ra),
2145 (fma (fneg node:$Rn), node:$Rm, node:$Ra)>;
2146 def fnmadd : PatFrag<(ops node:$Rn, node:$Rm, node:$Ra),
2147 (fma node:$Rn, node:$Rm, (fneg node:$Ra))>;
2148 def fnmsub : PatFrag<(ops node:$Rn, node:$Rm, node:$Ra),
2149 (fma (fneg node:$Rn), node:$Rm, (fneg node:$Ra))>;
2151 class A64I_fpdp3Impl<string asmop, RegisterClass FPR, ValueType VT,
2152 bits<2> type, bit o1, bit o0, SDPatternOperator fmakind>
2153 : A64I_fpdp3<0b0, 0b0, type, o1, o0, (outs FPR:$Rd),
2154 (ins FPR:$Rn, FPR:$Rm, FPR:$Ra),
2155 !strconcat(asmop,"\t$Rd, $Rn, $Rm, $Ra"),
2156 [(set FPR:$Rd, (fmakind (VT FPR:$Rn), FPR:$Rm, FPR:$Ra))],
2159 def FMADDssss : A64I_fpdp3Impl<"fmadd", FPR32, f32, 0b00, 0b0, 0b0, fma>;
2160 def FMSUBssss : A64I_fpdp3Impl<"fmsub", FPR32, f32, 0b00, 0b0, 0b1, fmsub>;
2161 def FNMADDssss : A64I_fpdp3Impl<"fnmadd", FPR32, f32, 0b00, 0b1, 0b0, fnmadd>;
2162 def FNMSUBssss : A64I_fpdp3Impl<"fnmsub", FPR32, f32, 0b00, 0b1, 0b1, fnmsub>;
2164 def FMADDdddd : A64I_fpdp3Impl<"fmadd", FPR64, f64, 0b01, 0b0, 0b0, fma>;
2165 def FMSUBdddd : A64I_fpdp3Impl<"fmsub", FPR64, f64, 0b01, 0b0, 0b1, fmsub>;
2166 def FNMADDdddd : A64I_fpdp3Impl<"fnmadd", FPR64, f64, 0b01, 0b1, 0b0, fnmadd>;
2167 def FNMSUBdddd : A64I_fpdp3Impl<"fnmsub", FPR64, f64, 0b01, 0b1, 0b1, fnmsub>;
2169 //===----------------------------------------------------------------------===//
2170 // Floating-point <-> fixed-point conversion instructions
2171 //===----------------------------------------------------------------------===//
2172 // Contains: FCVTZS, FCVTZU, SCVTF, UCVTF
2174 // #1-#32 allowed, encoded as "64 - <specified imm>
2175 def fixedpos_asmoperand_i32 : AsmOperandClass {
2176 let Name = "CVTFixedPos32";
2177 let RenderMethod = "addCVTFixedPosOperands";
2178 let PredicateMethod = "isCVTFixedPos<32>";
2179 let DiagnosticType = "CVTFixedPos32";
2182 // Also encoded as "64 - <specified imm>" but #1-#64 allowed.
2183 def fixedpos_asmoperand_i64 : AsmOperandClass {
2184 let Name = "CVTFixedPos64";
2185 let RenderMethod = "addCVTFixedPosOperands";
2186 let PredicateMethod = "isCVTFixedPos<64>";
2187 let DiagnosticType = "CVTFixedPos64";
2190 // We need the cartesian product of f32/f64 i32/i64 operands for
2192 // + Selection needs to use operands of correct floating type
2193 // + Assembly parsing and decoding depend on integer width
2194 class cvtfix_i32_op<ValueType FloatVT>
2196 ComplexPattern<FloatVT, 1, "SelectCVTFixedPosOperand<32>", [fpimm]> {
2197 let ParserMatchClass = fixedpos_asmoperand_i32;
2198 let DecoderMethod = "DecodeCVT32FixedPosOperand";
2199 let PrintMethod = "printCVTFixedPosOperand";
2202 class cvtfix_i64_op<ValueType FloatVT>
2204 ComplexPattern<FloatVT, 1, "SelectCVTFixedPosOperand<64>", [fpimm]> {
2205 let ParserMatchClass = fixedpos_asmoperand_i64;
2206 let PrintMethod = "printCVTFixedPosOperand";
2209 // Because of the proliferation of weird operands, it's not really
2210 // worth going for a multiclass here. Oh well.
2212 class A64I_fptofix<bit sf, bits<2> type, bits<3> opcode,
2213 RegisterClass GPR, RegisterClass FPR, Operand scale_op,
2214 string asmop, SDNode cvtop>
2215 : A64I_fpfixed<sf, 0b0, type, 0b11, opcode,
2216 (outs GPR:$Rd), (ins FPR:$Rn, scale_op:$Scale),
2217 !strconcat(asmop, "\t$Rd, $Rn, $Scale"),
2218 [(set GPR:$Rd, (cvtop (fmul FPR:$Rn, scale_op:$Scale)))],
2221 def FCVTZSwsi : A64I_fptofix<0b0, 0b00, 0b000, GPR32, FPR32,
2222 cvtfix_i32_op<f32>, "fcvtzs", fp_to_sint>;
2223 def FCVTZSxsi : A64I_fptofix<0b1, 0b00, 0b000, GPR64, FPR32,
2224 cvtfix_i64_op<f32>, "fcvtzs", fp_to_sint>;
2225 def FCVTZUwsi : A64I_fptofix<0b0, 0b00, 0b001, GPR32, FPR32,
2226 cvtfix_i32_op<f32>, "fcvtzu", fp_to_uint>;
2227 def FCVTZUxsi : A64I_fptofix<0b1, 0b00, 0b001, GPR64, FPR32,
2228 cvtfix_i64_op<f32>, "fcvtzu", fp_to_uint>;
2230 def FCVTZSwdi : A64I_fptofix<0b0, 0b01, 0b000, GPR32, FPR64,
2231 cvtfix_i32_op<f64>, "fcvtzs", fp_to_sint>;
2232 def FCVTZSxdi : A64I_fptofix<0b1, 0b01, 0b000, GPR64, FPR64,
2233 cvtfix_i64_op<f64>, "fcvtzs", fp_to_sint>;
2234 def FCVTZUwdi : A64I_fptofix<0b0, 0b01, 0b001, GPR32, FPR64,
2235 cvtfix_i32_op<f64>, "fcvtzu", fp_to_uint>;
2236 def FCVTZUxdi : A64I_fptofix<0b1, 0b01, 0b001, GPR64, FPR64,
2237 cvtfix_i64_op<f64>, "fcvtzu", fp_to_uint>;
2240 class A64I_fixtofp<bit sf, bits<2> type, bits<3> opcode,
2241 RegisterClass FPR, RegisterClass GPR, Operand scale_op,
2242 string asmop, SDNode cvtop>
2243 : A64I_fpfixed<sf, 0b0, type, 0b00, opcode,
2244 (outs FPR:$Rd), (ins GPR:$Rn, scale_op:$Scale),
2245 !strconcat(asmop, "\t$Rd, $Rn, $Scale"),
2246 [(set FPR:$Rd, (fdiv (cvtop GPR:$Rn), scale_op:$Scale))],
2249 def SCVTFswi : A64I_fixtofp<0b0, 0b00, 0b010, FPR32, GPR32,
2250 cvtfix_i32_op<f32>, "scvtf", sint_to_fp>;
2251 def SCVTFsxi : A64I_fixtofp<0b1, 0b00, 0b010, FPR32, GPR64,
2252 cvtfix_i64_op<f32>, "scvtf", sint_to_fp>;
2253 def UCVTFswi : A64I_fixtofp<0b0, 0b00, 0b011, FPR32, GPR32,
2254 cvtfix_i32_op<f32>, "ucvtf", uint_to_fp>;
2255 def UCVTFsxi : A64I_fixtofp<0b1, 0b00, 0b011, FPR32, GPR64,
2256 cvtfix_i64_op<f32>, "ucvtf", uint_to_fp>;
2257 def SCVTFdwi : A64I_fixtofp<0b0, 0b01, 0b010, FPR64, GPR32,
2258 cvtfix_i32_op<f64>, "scvtf", sint_to_fp>;
2259 def SCVTFdxi : A64I_fixtofp<0b1, 0b01, 0b010, FPR64, GPR64,
2260 cvtfix_i64_op<f64>, "scvtf", sint_to_fp>;
2261 def UCVTFdwi : A64I_fixtofp<0b0, 0b01, 0b011, FPR64, GPR32,
2262 cvtfix_i32_op<f64>, "ucvtf", uint_to_fp>;
2263 def UCVTFdxi : A64I_fixtofp<0b1, 0b01, 0b011, FPR64, GPR64,
2264 cvtfix_i64_op<f64>, "ucvtf", uint_to_fp>;
2266 //===----------------------------------------------------------------------===//
2267 // Floating-point <-> integer conversion instructions
2268 //===----------------------------------------------------------------------===//
2269 // Contains: FCVTZS, FCVTZU, SCVTF, UCVTF
2271 class A64I_fpintI<bit sf, bits<2> type, bits<2> rmode, bits<3> opcode,
2272 RegisterClass DestPR, RegisterClass SrcPR, string asmop>
2273 : A64I_fpint<sf, 0b0, type, rmode, opcode, (outs DestPR:$Rd), (ins SrcPR:$Rn),
2274 !strconcat(asmop, "\t$Rd, $Rn"), [], NoItinerary>;
2276 multiclass A64I_fptointRM<bits<2> rmode, bit o2, string asmop> {
2277 def Sws : A64I_fpintI<0b0, 0b00, rmode, {o2, 0, 0},
2278 GPR32, FPR32, asmop # "s">;
2279 def Sxs : A64I_fpintI<0b1, 0b00, rmode, {o2, 0, 0},
2280 GPR64, FPR32, asmop # "s">;
2281 def Uws : A64I_fpintI<0b0, 0b00, rmode, {o2, 0, 1},
2282 GPR32, FPR32, asmop # "u">;
2283 def Uxs : A64I_fpintI<0b1, 0b00, rmode, {o2, 0, 1},
2284 GPR64, FPR32, asmop # "u">;
2286 def Swd : A64I_fpintI<0b0, 0b01, rmode, {o2, 0, 0},
2287 GPR32, FPR64, asmop # "s">;
2288 def Sxd : A64I_fpintI<0b1, 0b01, rmode, {o2, 0, 0},
2289 GPR64, FPR64, asmop # "s">;
2290 def Uwd : A64I_fpintI<0b0, 0b01, rmode, {o2, 0, 1},
2291 GPR32, FPR64, asmop # "u">;
2292 def Uxd : A64I_fpintI<0b1, 0b01, rmode, {o2, 0, 1},
2293 GPR64, FPR64, asmop # "u">;
2296 defm FCVTN : A64I_fptointRM<0b00, 0b0, "fcvtn">;
2297 defm FCVTP : A64I_fptointRM<0b01, 0b0, "fcvtp">;
2298 defm FCVTM : A64I_fptointRM<0b10, 0b0, "fcvtm">;
2299 defm FCVTZ : A64I_fptointRM<0b11, 0b0, "fcvtz">;
2300 defm FCVTA : A64I_fptointRM<0b00, 0b1, "fcvta">;
2302 def : Pat<(i32 (fp_to_sint FPR32:$Rn)), (FCVTZSws FPR32:$Rn)>;
2303 def : Pat<(i64 (fp_to_sint FPR32:$Rn)), (FCVTZSxs FPR32:$Rn)>;
2304 def : Pat<(i32 (fp_to_uint FPR32:$Rn)), (FCVTZUws FPR32:$Rn)>;
2305 def : Pat<(i64 (fp_to_uint FPR32:$Rn)), (FCVTZUxs FPR32:$Rn)>;
2306 def : Pat<(i32 (fp_to_sint (f64 FPR64:$Rn))), (FCVTZSwd FPR64:$Rn)>;
2307 def : Pat<(i64 (fp_to_sint (f64 FPR64:$Rn))), (FCVTZSxd FPR64:$Rn)>;
2308 def : Pat<(i32 (fp_to_uint (f64 FPR64:$Rn))), (FCVTZUwd FPR64:$Rn)>;
2309 def : Pat<(i64 (fp_to_uint (f64 FPR64:$Rn))), (FCVTZUxd FPR64:$Rn)>;
2311 multiclass A64I_inttofp<bit o0, string asmop> {
2312 def CVTFsw : A64I_fpintI<0b0, 0b00, 0b00, {0, 1, o0}, FPR32, GPR32, asmop>;
2313 def CVTFsx : A64I_fpintI<0b1, 0b00, 0b00, {0, 1, o0}, FPR32, GPR64, asmop>;
2314 def CVTFdw : A64I_fpintI<0b0, 0b01, 0b00, {0, 1, o0}, FPR64, GPR32, asmop>;
2315 def CVTFdx : A64I_fpintI<0b1, 0b01, 0b00, {0, 1, o0}, FPR64, GPR64, asmop>;
2318 defm S : A64I_inttofp<0b0, "scvtf">;
2319 defm U : A64I_inttofp<0b1, "ucvtf">;
2321 def : Pat<(f32 (sint_to_fp GPR32:$Rn)), (SCVTFsw GPR32:$Rn)>;
2322 def : Pat<(f32 (sint_to_fp GPR64:$Rn)), (SCVTFsx GPR64:$Rn)>;
2323 def : Pat<(f64 (sint_to_fp GPR32:$Rn)), (SCVTFdw GPR32:$Rn)>;
2324 def : Pat<(f64 (sint_to_fp GPR64:$Rn)), (SCVTFdx GPR64:$Rn)>;
2325 def : Pat<(f32 (uint_to_fp GPR32:$Rn)), (UCVTFsw GPR32:$Rn)>;
2326 def : Pat<(f32 (uint_to_fp GPR64:$Rn)), (UCVTFsx GPR64:$Rn)>;
2327 def : Pat<(f64 (uint_to_fp GPR32:$Rn)), (UCVTFdw GPR32:$Rn)>;
2328 def : Pat<(f64 (uint_to_fp GPR64:$Rn)), (UCVTFdx GPR64:$Rn)>;
2330 def FMOVws : A64I_fpintI<0b0, 0b00, 0b00, 0b110, GPR32, FPR32, "fmov">;
2331 def FMOVsw : A64I_fpintI<0b0, 0b00, 0b00, 0b111, FPR32, GPR32, "fmov">;
2332 def FMOVxd : A64I_fpintI<0b1, 0b01, 0b00, 0b110, GPR64, FPR64, "fmov">;
2333 def FMOVdx : A64I_fpintI<0b1, 0b01, 0b00, 0b111, FPR64, GPR64, "fmov">;
2335 def : Pat<(i32 (bitconvert (f32 FPR32:$Rn))), (FMOVws FPR32:$Rn)>;
2336 def : Pat<(f32 (bitconvert (i32 GPR32:$Rn))), (FMOVsw GPR32:$Rn)>;
2337 def : Pat<(i64 (bitconvert (f64 FPR64:$Rn))), (FMOVxd FPR64:$Rn)>;
2338 def : Pat<(f64 (bitconvert (i64 GPR64:$Rn))), (FMOVdx GPR64:$Rn)>;
2340 def lane1_asmoperand : AsmOperandClass {
2342 let RenderMethod = "addImmOperands";
2343 let DiagnosticType = "Lane1";
2346 def lane1 : Operand<i32> {
2347 let ParserMatchClass = lane1_asmoperand;
2348 let PrintMethod = "printBareImmOperand";
2351 let DecoderMethod = "DecodeFMOVLaneInstruction" in {
2352 def FMOVxv : A64I_fpint<0b1, 0b0, 0b10, 0b01, 0b110,
2353 (outs GPR64:$Rd), (ins VPR128:$Rn, lane1:$Lane),
2354 "fmov\t$Rd, $Rn.d[$Lane]", [], NoItinerary>;
2356 def FMOVvx : A64I_fpint<0b1, 0b0, 0b10, 0b01, 0b111,
2357 (outs VPR128:$Rd), (ins GPR64:$Rn, lane1:$Lane),
2358 "fmov\t$Rd.d[$Lane], $Rn", [], NoItinerary>;
2361 def : InstAlias<"fmov $Rd, $Rn.2d[$Lane]",
2362 (FMOVxv GPR64:$Rd, VPR128:$Rn, lane1:$Lane), 0b0>;
2364 def : InstAlias<"fmov $Rd.2d[$Lane], $Rn",
2365 (FMOVvx VPR128:$Rd, GPR64:$Rn, lane1:$Lane), 0b0>;
2367 //===----------------------------------------------------------------------===//
2368 // Floating-point immediate instructions
2369 //===----------------------------------------------------------------------===//
2372 def fpimm_asmoperand : AsmOperandClass {
2373 let Name = "FMOVImm";
2374 let ParserMethod = "ParseFPImmOperand";
2375 let DiagnosticType = "FPImm";
2378 // The MCOperand for these instructions are the encoded 8-bit values.
2379 def SDXF_fpimm : SDNodeXForm<fpimm, [{
2381 A64Imms::isFPImm(N->getValueAPF(), Imm8);
2382 return CurDAG->getTargetConstant(Imm8, MVT::i32);
2385 class fmov_operand<ValueType FT>
2387 PatLeaf<(FT fpimm), [{ return A64Imms::isFPImm(N->getValueAPF()); }],
2389 let PrintMethod = "printFPImmOperand";
2390 let ParserMatchClass = fpimm_asmoperand;
2393 def fmov32_operand : fmov_operand<f32>;
2394 def fmov64_operand : fmov_operand<f64>;
2396 class A64I_fpimm_impl<bits<2> type, RegisterClass Reg, ValueType VT,
2397 Operand fmov_operand>
2398 : A64I_fpimm<0b0, 0b0, type, 0b00000,
2400 (ins fmov_operand:$Imm8),
2402 [(set (VT Reg:$Rd), fmov_operand:$Imm8)],
2405 def FMOVsi : A64I_fpimm_impl<0b00, FPR32, f32, fmov32_operand>;
2406 def FMOVdi : A64I_fpimm_impl<0b01, FPR64, f64, fmov64_operand>;
2408 //===----------------------------------------------------------------------===//
2409 // Load-register (literal) instructions
2410 //===----------------------------------------------------------------------===//
2411 // Contains: LDR, LDRSW, PRFM
2413 def ldrlit_label_asmoperand : AsmOperandClass {
2414 let Name = "LoadLitLabel";
2415 let RenderMethod = "addLabelOperands<19, 4>";
2416 let DiagnosticType = "Label";
2419 def ldrlit_label : Operand<i64> {
2420 let EncoderMethod = "getLoadLitLabelOpValue";
2422 // This label is a 19-bit offset from PC, scaled by the instruction-width: 4.
2423 let PrintMethod = "printLabelOperand<19, 4>";
2424 let ParserMatchClass = ldrlit_label_asmoperand;
2425 let OperandType = "OPERAND_PCREL";
2428 // Various instructions take an immediate value (which can always be used),
2429 // where some numbers have a symbolic name to make things easier. These operands
2430 // and the associated functions abstract away the differences.
2431 multiclass namedimm<string prefix, string mapper> {
2432 def _asmoperand : AsmOperandClass {
2433 let Name = "NamedImm" # prefix;
2434 let PredicateMethod = "isUImm";
2435 let RenderMethod = "addImmOperands";
2436 let ParserMethod = "ParseNamedImmOperand<" # mapper # ">";
2437 let DiagnosticType = "NamedImm_" # prefix;
2440 def _op : Operand<i32> {
2441 let ParserMatchClass = !cast<AsmOperandClass>(prefix # "_asmoperand");
2442 let PrintMethod = "printNamedImmOperand<" # mapper # ">";
2443 let DecoderMethod = "DecodeNamedImmOperand<" # mapper # ">";
2447 defm prefetch : namedimm<"prefetch", "A64PRFM::PRFMMapper">;
2449 class A64I_LDRlitSimple<bits<2> opc, bit v, RegisterClass OutReg,
2450 list<dag> patterns = []>
2451 : A64I_LDRlit<opc, v, (outs OutReg:$Rt), (ins ldrlit_label:$Imm19),
2452 "ldr\t$Rt, $Imm19", patterns, NoItinerary>;
2454 let mayLoad = 1 in {
2455 def LDRw_lit : A64I_LDRlitSimple<0b00, 0b0, GPR32>;
2456 def LDRx_lit : A64I_LDRlitSimple<0b01, 0b0, GPR64>;
2459 def LDRs_lit : A64I_LDRlitSimple<0b00, 0b1, FPR32>;
2460 def LDRd_lit : A64I_LDRlitSimple<0b01, 0b1, FPR64>;
2462 let mayLoad = 1 in {
2463 def LDRq_lit : A64I_LDRlitSimple<0b10, 0b1, FPR128>;
2466 def LDRSWx_lit : A64I_LDRlit<0b10, 0b0,
2468 (ins ldrlit_label:$Imm19),
2469 "ldrsw\t$Rt, $Imm19",
2472 def PRFM_lit : A64I_LDRlit<0b11, 0b0,
2473 (outs), (ins prefetch_op:$Rt, ldrlit_label:$Imm19),
2474 "prfm\t$Rt, $Imm19",
2478 //===----------------------------------------------------------------------===//
2479 // Load-store exclusive instructions
2480 //===----------------------------------------------------------------------===//
2481 // Contains: STXRB, STXRH, STXR, LDXRB, LDXRH, LDXR. STXP, LDXP, STLXRB,
2482 // STLXRH, STLXR, LDAXRB, LDAXRH, LDAXR, STLXP, LDAXP, STLRB,
2483 // STLRH, STLR, LDARB, LDARH, LDAR
2485 // Since these instructions have the undefined register bits set to 1 in
2486 // their canonical form, we need a post encoder method to set those bits
2487 // to 1 when encoding these instructions. We do this using the
2488 // fixLoadStoreExclusive function. This function has template parameters:
2490 // fixLoadStoreExclusive<int hasRs, int hasRt2>
2492 // hasRs indicates that the instruction uses the Rs field, so we won't set
2493 // it to 1 (and the same for Rt2). We don't need template parameters for
2494 // the other register fiels since Rt and Rn are always used.
2496 // This operand parses a GPR64xsp register, followed by an optional immediate
2498 def GPR64xsp0_asmoperand : AsmOperandClass {
2499 let Name = "GPR64xsp0";
2500 let PredicateMethod = "isWrappedReg";
2501 let RenderMethod = "addRegOperands";
2502 let ParserMethod = "ParseLSXAddressOperand";
2503 // Diagnostics are provided by ParserMethod
2506 def GPR64xsp0 : RegisterOperand<GPR64xsp> {
2507 let ParserMatchClass = GPR64xsp0_asmoperand;
2510 //===----------------------------------
2511 // Store-exclusive (releasing & normal)
2512 //===----------------------------------
2514 class A64I_SRexs_impl<bits<2> size, bits<3> opcode, string asm, dag outs,
2515 dag ins, list<dag> pat,
2516 InstrItinClass itin> :
2517 A64I_LDSTex_stn <size,
2518 opcode{2}, 0, opcode{1}, opcode{0},
2520 !strconcat(asm, "\t$Rs, $Rt, [$Rn]"),
2523 let PostEncoderMethod = "fixLoadStoreExclusive<1,0>";
2526 multiclass A64I_SRex<string asmstr, bits<3> opcode, string prefix> {
2527 def _byte: A64I_SRexs_impl<0b00, opcode, !strconcat(asmstr, "b"),
2528 (outs GPR32:$Rs), (ins GPR32:$Rt, GPR64xsp0:$Rn),
2531 def _hword: A64I_SRexs_impl<0b01, opcode, !strconcat(asmstr, "h"),
2532 (outs GPR32:$Rs), (ins GPR32:$Rt, GPR64xsp0:$Rn),
2535 def _word: A64I_SRexs_impl<0b10, opcode, asmstr,
2536 (outs GPR32:$Rs), (ins GPR32:$Rt, GPR64xsp0:$Rn),
2539 def _dword: A64I_SRexs_impl<0b11, opcode, asmstr,
2540 (outs GPR32:$Rs), (ins GPR64:$Rt, GPR64xsp0:$Rn),
2544 defm STXR : A64I_SRex<"stxr", 0b000, "STXR">;
2545 defm STLXR : A64I_SRex<"stlxr", 0b001, "STLXR">;
2547 //===----------------------------------
2549 //===----------------------------------
2551 class A64I_LRexs_impl<bits<2> size, bits<3> opcode, string asm, dag outs,
2552 dag ins, list<dag> pat,
2553 InstrItinClass itin> :
2554 A64I_LDSTex_tn <size,
2555 opcode{2}, 1, opcode{1}, opcode{0},
2557 !strconcat(asm, "\t$Rt, [$Rn]"),
2560 let PostEncoderMethod = "fixLoadStoreExclusive<0,0>";
2563 multiclass A64I_LRex<string asmstr, bits<3> opcode> {
2564 def _byte: A64I_LRexs_impl<0b00, opcode, !strconcat(asmstr, "b"),
2565 (outs GPR32:$Rt), (ins GPR64xsp0:$Rn),
2568 def _hword: A64I_LRexs_impl<0b01, opcode, !strconcat(asmstr, "h"),
2569 (outs GPR32:$Rt), (ins GPR64xsp0:$Rn),
2572 def _word: A64I_LRexs_impl<0b10, opcode, asmstr,
2573 (outs GPR32:$Rt), (ins GPR64xsp0:$Rn),
2576 def _dword: A64I_LRexs_impl<0b11, opcode, asmstr,
2577 (outs GPR64:$Rt), (ins GPR64xsp0:$Rn),
2581 defm LDXR : A64I_LRex<"ldxr", 0b000>;
2582 defm LDAXR : A64I_LRex<"ldaxr", 0b001>;
2583 defm LDAR : A64I_LRex<"ldar", 0b101>;
2585 class acquiring_load<PatFrag base>
2586 : PatFrag<(ops node:$ptr), (base node:$ptr), [{
2587 return cast<AtomicSDNode>(N)->getOrdering() == Acquire;
2590 def atomic_load_acquire_8 : acquiring_load<atomic_load_8>;
2591 def atomic_load_acquire_16 : acquiring_load<atomic_load_16>;
2592 def atomic_load_acquire_32 : acquiring_load<atomic_load_32>;
2593 def atomic_load_acquire_64 : acquiring_load<atomic_load_64>;
2595 def : Pat<(atomic_load_acquire_8 GPR64xsp:$Rn), (LDAR_byte GPR64xsp0:$Rn)>;
2596 def : Pat<(atomic_load_acquire_16 GPR64xsp:$Rn), (LDAR_hword GPR64xsp0:$Rn)>;
2597 def : Pat<(atomic_load_acquire_32 GPR64xsp:$Rn), (LDAR_word GPR64xsp0:$Rn)>;
2598 def : Pat<(atomic_load_acquire_64 GPR64xsp:$Rn), (LDAR_dword GPR64xsp0:$Rn)>;
2600 //===----------------------------------
2601 // Store-release (no exclusivity)
2602 //===----------------------------------
2604 class A64I_SLexs_impl<bits<2> size, bits<3> opcode, string asm, dag outs,
2605 dag ins, list<dag> pat,
2606 InstrItinClass itin> :
2607 A64I_LDSTex_tn <size,
2608 opcode{2}, 0, opcode{1}, opcode{0},
2610 !strconcat(asm, "\t$Rt, [$Rn]"),
2613 let PostEncoderMethod = "fixLoadStoreExclusive<0,0>";
2616 class releasing_store<PatFrag base>
2617 : PatFrag<(ops node:$ptr, node:$val), (base node:$ptr, node:$val), [{
2618 return cast<AtomicSDNode>(N)->getOrdering() == Release;
2621 def atomic_store_release_8 : releasing_store<atomic_store_8>;
2622 def atomic_store_release_16 : releasing_store<atomic_store_16>;
2623 def atomic_store_release_32 : releasing_store<atomic_store_32>;
2624 def atomic_store_release_64 : releasing_store<atomic_store_64>;
2626 multiclass A64I_SLex<string asmstr, bits<3> opcode, string prefix> {
2627 def _byte: A64I_SLexs_impl<0b00, opcode, !strconcat(asmstr, "b"),
2628 (outs), (ins GPR32:$Rt, GPR64xsp0:$Rn),
2629 [(atomic_store_release_8 GPR64xsp0:$Rn, GPR32:$Rt)],
2632 def _hword: A64I_SLexs_impl<0b01, opcode, !strconcat(asmstr, "h"),
2633 (outs), (ins GPR32:$Rt, GPR64xsp0:$Rn),
2634 [(atomic_store_release_16 GPR64xsp0:$Rn, GPR32:$Rt)],
2637 def _word: A64I_SLexs_impl<0b10, opcode, asmstr,
2638 (outs), (ins GPR32:$Rt, GPR64xsp0:$Rn),
2639 [(atomic_store_release_32 GPR64xsp0:$Rn, GPR32:$Rt)],
2642 def _dword: A64I_SLexs_impl<0b11, opcode, asmstr,
2643 (outs), (ins GPR64:$Rt, GPR64xsp0:$Rn),
2644 [(atomic_store_release_64 GPR64xsp0:$Rn, GPR64:$Rt)],
2648 defm STLR : A64I_SLex<"stlr", 0b101, "STLR">;
2650 //===----------------------------------
2651 // Store-exclusive pair (releasing & normal)
2652 //===----------------------------------
2654 class A64I_SPexs_impl<bits<2> size, bits<3> opcode, string asm, dag outs,
2655 dag ins, list<dag> pat,
2656 InstrItinClass itin> :
2657 A64I_LDSTex_stt2n <size,
2658 opcode{2}, 0, opcode{1}, opcode{0},
2660 !strconcat(asm, "\t$Rs, $Rt, $Rt2, [$Rn]"),
2666 multiclass A64I_SPex<string asmstr, bits<3> opcode> {
2667 def _word: A64I_SPexs_impl<0b10, opcode, asmstr, (outs),
2668 (ins GPR32:$Rs, GPR32:$Rt, GPR32:$Rt2,
2672 def _dword: A64I_SPexs_impl<0b11, opcode, asmstr, (outs),
2673 (ins GPR32:$Rs, GPR64:$Rt, GPR64:$Rt2,
2678 defm STXP : A64I_SPex<"stxp", 0b010>;
2679 defm STLXP : A64I_SPex<"stlxp", 0b011>;
2681 //===----------------------------------
2682 // Load-exclusive pair (acquiring & normal)
2683 //===----------------------------------
2685 class A64I_LPexs_impl<bits<2> size, bits<3> opcode, string asm, dag outs,
2686 dag ins, list<dag> pat,
2687 InstrItinClass itin> :
2688 A64I_LDSTex_tt2n <size,
2689 opcode{2}, 1, opcode{1}, opcode{0},
2691 !strconcat(asm, "\t$Rt, $Rt2, [$Rn]"),
2694 let DecoderMethod = "DecodeLoadPairExclusiveInstruction";
2695 let PostEncoderMethod = "fixLoadStoreExclusive<0,1>";
2698 multiclass A64I_LPex<string asmstr, bits<3> opcode> {
2699 def _word: A64I_LPexs_impl<0b10, opcode, asmstr,
2700 (outs GPR32:$Rt, GPR32:$Rt2),
2701 (ins GPR64xsp0:$Rn),
2704 def _dword: A64I_LPexs_impl<0b11, opcode, asmstr,
2705 (outs GPR64:$Rt, GPR64:$Rt2),
2706 (ins GPR64xsp0:$Rn),
2710 defm LDXP : A64I_LPex<"ldxp", 0b010>;
2711 defm LDAXP : A64I_LPex<"ldaxp", 0b011>;
2713 //===----------------------------------------------------------------------===//
2714 // Load-store register (unscaled immediate) instructions
2715 //===----------------------------------------------------------------------===//
2716 // Contains: LDURB, LDURH, LDRUSB, LDRUSH, LDRUSW, STUR, STURB, STURH and PRFUM
2720 //===----------------------------------------------------------------------===//
2721 // Load-store register (register offset) instructions
2722 //===----------------------------------------------------------------------===//
2723 // Contains: LDRB, LDRH, LDRSB, LDRSH, LDRSW, STR, STRB, STRH and PRFM
2727 //===----------------------------------------------------------------------===//
2728 // Load-store register (unsigned immediate) instructions
2729 //===----------------------------------------------------------------------===//
2730 // Contains: LDRB, LDRH, LDRSB, LDRSH, LDRSW, STR, STRB, STRH and PRFM
2734 //===----------------------------------------------------------------------===//
2735 // Load-store register (immediate post-indexed) instructions
2736 //===----------------------------------------------------------------------===//
2737 // Contains: STRB, STRH, STR, LDRB, LDRH, LDR, LDRSB, LDRSH, LDRSW
2741 //===----------------------------------------------------------------------===//
2742 // Load-store register (immediate pre-indexed) instructions
2743 //===----------------------------------------------------------------------===//
2744 // Contains: STRB, STRH, STR, LDRB, LDRH, LDR, LDRSB, LDRSH, LDRSW
2746 // Note that patterns are much later on in a completely separate section (they
2747 // need ADRPxi to be defined).
2749 //===-------------------------------
2750 // 1. Various operands needed
2751 //===-------------------------------
2753 //===-------------------------------
2754 // 1.1 Unsigned 12-bit immediate operands
2755 //===-------------------------------
2756 // The addressing mode for these instructions consists of an unsigned 12-bit
2757 // immediate which is scaled by the size of the memory access.
2759 // We represent this in the MC layer by two operands:
2760 // 1. A base register.
2761 // 2. A 12-bit immediate: not multiplied by access size, so "LDR x0,[x0,#8]"
2762 // would have '1' in this field.
2763 // This means that separate functions are needed for converting representations
2764 // which *are* aware of the intended access size.
2766 // Anything that creates an MCInst (Decoding, selection and AsmParsing) has to
2767 // know the access size via some means. An isolated operand does not have this
2768 // information unless told from here, which means we need separate tablegen
2769 // Operands for each access size. This multiclass takes care of instantiating
2770 // the correct template functions in the rest of the backend.
2772 //===-------------------------------
2773 // 1.1 Unsigned 12-bit immediate operands
2774 //===-------------------------------
2776 multiclass offsets_uimm12<int MemSize, string prefix> {
2777 def uimm12_asmoperand : AsmOperandClass {
2778 let Name = "OffsetUImm12_" # MemSize;
2779 let PredicateMethod = "isOffsetUImm12<" # MemSize # ">";
2780 let RenderMethod = "addOffsetUImm12Operands<" # MemSize # ">";
2781 let DiagnosticType = "LoadStoreUImm12_" # MemSize;
2784 // Pattern is really no more than an ImmLeaf, but predicated on MemSize which
2785 // complicates things beyond TableGen's ken.
2786 def uimm12 : Operand<i64>,
2787 ComplexPattern<i64, 1, "SelectOffsetUImm12<" # MemSize # ">"> {
2788 let ParserMatchClass
2789 = !cast<AsmOperandClass>(prefix # uimm12_asmoperand);
2791 let PrintMethod = "printOffsetUImm12Operand<" # MemSize # ">";
2792 let EncoderMethod = "getOffsetUImm12OpValue<" # MemSize # ">";
2796 defm byte_ : offsets_uimm12<1, "byte_">;
2797 defm hword_ : offsets_uimm12<2, "hword_">;
2798 defm word_ : offsets_uimm12<4, "word_">;
2799 defm dword_ : offsets_uimm12<8, "dword_">;
2800 defm qword_ : offsets_uimm12<16, "qword_">;
2802 //===-------------------------------
2803 // 1.1 Signed 9-bit immediate operands
2804 //===-------------------------------
2806 // The MCInst is expected to store the bit-wise encoding of the value,
2807 // which amounts to lopping off the extended sign bits.
2808 def SDXF_simm9 : SDNodeXForm<imm, [{
2809 return CurDAG->getTargetConstant(N->getZExtValue() & 0x1ff, MVT::i32);
2812 def simm9_asmoperand : AsmOperandClass {
2814 let PredicateMethod = "isSImm<9>";
2815 let RenderMethod = "addSImmOperands<9>";
2816 let DiagnosticType = "LoadStoreSImm9";
2819 def simm9 : Operand<i64>,
2820 ImmLeaf<i64, [{ return Imm >= -0x100 && Imm <= 0xff; }],
2822 let PrintMethod = "printOffsetSImm9Operand";
2823 let ParserMatchClass = simm9_asmoperand;
2827 //===-------------------------------
2828 // 1.3 Register offset extensions
2829 //===-------------------------------
2831 // The assembly-syntax for these addressing-modes is:
2832 // [<Xn|SP>, <R><m> {, <extend> {<amount>}}]
2834 // The essential semantics are:
2835 // + <amount> is a shift: #<log(transfer size)> or #0
2836 // + <R> can be W or X.
2837 // + If <R> is W, <extend> can be UXTW or SXTW
2838 // + If <R> is X, <extend> can be LSL or SXTX
2840 // The trickiest of those constraints is that Rm can be either GPR32 or GPR64,
2841 // which will need separate instructions for LLVM type-consistency. We'll also
2842 // need separate operands, of course.
2843 multiclass regexts<int MemSize, int RmSize, RegisterClass GPR,
2844 string Rm, string prefix> {
2845 def regext_asmoperand : AsmOperandClass {
2846 let Name = "AddrRegExtend_" # MemSize # "_" # Rm;
2847 let PredicateMethod = "isAddrRegExtend<" # MemSize # "," # RmSize # ">";
2848 let RenderMethod = "addAddrRegExtendOperands<" # MemSize # ">";
2849 let DiagnosticType = "LoadStoreExtend" # RmSize # "_" # MemSize;
2852 def regext : Operand<i64> {
2854 = "printAddrRegExtendOperand<" # MemSize # ", " # RmSize # ">";
2856 let DecoderMethod = "DecodeAddrRegExtendOperand";
2857 let ParserMatchClass
2858 = !cast<AsmOperandClass>(prefix # regext_asmoperand);
2862 multiclass regexts_wx<int MemSize, string prefix> {
2863 // Rm is an X-register if LSL or SXTX are specified as the shift.
2864 defm Xm_ : regexts<MemSize, 64, GPR64, "Xm", prefix # "Xm_">;
2866 // Rm is a W-register if UXTW or SXTW are specified as the shift.
2867 defm Wm_ : regexts<MemSize, 32, GPR32, "Wm", prefix # "Wm_">;
2870 defm byte_ : regexts_wx<1, "byte_">;
2871 defm hword_ : regexts_wx<2, "hword_">;
2872 defm word_ : regexts_wx<4, "word_">;
2873 defm dword_ : regexts_wx<8, "dword_">;
2874 defm qword_ : regexts_wx<16, "qword_">;
2877 //===------------------------------
2878 // 2. The instructions themselves.
2879 //===------------------------------
2881 // We have the following instructions to implement:
2882 // | | B | H | W | X |
2883 // |-----------------+-------+-------+-------+--------|
2884 // | unsigned str | STRB | STRH | STR | STR |
2885 // | unsigned ldr | LDRB | LDRH | LDR | LDR |
2886 // | signed ldr to W | LDRSB | LDRSH | - | - |
2887 // | signed ldr to X | LDRSB | LDRSH | LDRSW | (PRFM) |
2889 // This will instantiate the LDR/STR instructions you'd expect to use for an
2890 // unsigned datatype (first two rows above) or floating-point register, which is
2891 // reasonably uniform across all access sizes.
2894 //===------------------------------
2895 // 2.1 Regular instructions
2896 //===------------------------------
2898 // This class covers the basic unsigned or irrelevantly-signed loads and stores,
2899 // to general-purpose and floating-point registers.
2901 class AddrParams<string prefix> {
2902 Operand uimm12 = !cast<Operand>(prefix # "_uimm12");
2904 Operand regextWm = !cast<Operand>(prefix # "_Wm_regext");
2905 Operand regextXm = !cast<Operand>(prefix # "_Xm_regext");
2908 def byte_addrparams : AddrParams<"byte">;
2909 def hword_addrparams : AddrParams<"hword">;
2910 def word_addrparams : AddrParams<"word">;
2911 def dword_addrparams : AddrParams<"dword">;
2912 def qword_addrparams : AddrParams<"qword">;
2914 multiclass A64I_LDRSTR_unsigned<string prefix, bits<2> size, bit v,
2915 bit high_opc, string asmsuffix,
2916 RegisterClass GPR, AddrParams params> {
2917 // Unsigned immediate
2918 def _STR : A64I_LSunsigimm<size, v, {high_opc, 0b0},
2919 (outs), (ins GPR:$Rt, GPR64xsp:$Rn, params.uimm12:$UImm12),
2920 "str" # asmsuffix # "\t$Rt, [$Rn, $UImm12]",
2924 def : InstAlias<"str" # asmsuffix # " $Rt, [$Rn]",
2925 (!cast<Instruction>(prefix # "_STR") GPR:$Rt, GPR64xsp:$Rn, 0)>;
2927 def _LDR : A64I_LSunsigimm<size, v, {high_opc, 0b1},
2928 (outs GPR:$Rt), (ins GPR64xsp:$Rn, params.uimm12:$UImm12),
2929 "ldr" # asmsuffix # "\t$Rt, [$Rn, $UImm12]",
2933 def : InstAlias<"ldr" # asmsuffix # " $Rt, [$Rn]",
2934 (!cast<Instruction>(prefix # "_LDR") GPR:$Rt, GPR64xsp:$Rn, 0)>;
2936 // Register offset (four of these: load/store and Wm/Xm).
2937 let mayLoad = 1 in {
2938 def _Wm_RegOffset_LDR : A64I_LSregoff<size, v, {high_opc, 0b1}, 0b0,
2940 (ins GPR64xsp:$Rn, GPR32:$Rm, params.regextWm:$Ext),
2941 "ldr" # asmsuffix # "\t$Rt, [$Rn, $Rm, $Ext]",
2944 def _Xm_RegOffset_LDR : A64I_LSregoff<size, v, {high_opc, 0b1}, 0b1,
2946 (ins GPR64xsp:$Rn, GPR64:$Rm, params.regextXm:$Ext),
2947 "ldr" # asmsuffix # "\t$Rt, [$Rn, $Rm, $Ext]",
2950 def : InstAlias<"ldr" # asmsuffix # " $Rt, [$Rn, $Rm]",
2951 (!cast<Instruction>(prefix # "_Xm_RegOffset_LDR") GPR:$Rt, GPR64xsp:$Rn,
2954 let mayStore = 1 in {
2955 def _Wm_RegOffset_STR : A64I_LSregoff<size, v, {high_opc, 0b0}, 0b0,
2956 (outs), (ins GPR:$Rt, GPR64xsp:$Rn, GPR32:$Rm,
2957 params.regextWm:$Ext),
2958 "str" # asmsuffix # "\t$Rt, [$Rn, $Rm, $Ext]",
2961 def _Xm_RegOffset_STR : A64I_LSregoff<size, v, {high_opc, 0b0}, 0b1,
2962 (outs), (ins GPR:$Rt, GPR64xsp:$Rn, GPR64:$Rm,
2963 params.regextXm:$Ext),
2964 "str" # asmsuffix # "\t$Rt, [$Rn, $Rm, $Ext]",
2967 def : InstAlias<"str" # asmsuffix # " $Rt, [$Rn, $Rm]",
2968 (!cast<Instruction>(prefix # "_Xm_RegOffset_STR") GPR:$Rt, GPR64xsp:$Rn,
2971 // Unaligned immediate
2972 def _STUR : A64I_LSunalimm<size, v, {high_opc, 0b0},
2973 (outs), (ins GPR:$Rt, GPR64xsp:$Rn, simm9:$SImm9),
2974 "stur" # asmsuffix # "\t$Rt, [$Rn, $SImm9]",
2978 def : InstAlias<"stur" # asmsuffix # " $Rt, [$Rn]",
2979 (!cast<Instruction>(prefix # "_STUR") GPR:$Rt, GPR64xsp:$Rn, 0)>;
2981 def _LDUR : A64I_LSunalimm<size, v, {high_opc, 0b1},
2982 (outs GPR:$Rt), (ins GPR64xsp:$Rn, simm9:$SImm9),
2983 "ldur" # asmsuffix # "\t$Rt, [$Rn, $SImm9]",
2987 def : InstAlias<"ldur" # asmsuffix # " $Rt, [$Rn]",
2988 (!cast<Instruction>(prefix # "_LDUR") GPR:$Rt, GPR64xsp:$Rn, 0)>;
2991 def _PostInd_STR : A64I_LSpostind<size, v, {high_opc, 0b0},
2992 (outs GPR64xsp:$Rn_wb),
2993 (ins GPR:$Rt, GPR64xsp:$Rn, simm9:$SImm9),
2994 "str" # asmsuffix # "\t$Rt, [$Rn], $SImm9",
2996 let Constraints = "$Rn = $Rn_wb";
2999 // Decoder only needed for unpredictability checking (FIXME).
3000 let DecoderMethod = "DecodeSingleIndexedInstruction";
3003 def _PostInd_LDR : A64I_LSpostind<size, v, {high_opc, 0b1},
3004 (outs GPR:$Rt, GPR64xsp:$Rn_wb),
3005 (ins GPR64xsp:$Rn, simm9:$SImm9),
3006 "ldr" # asmsuffix # "\t$Rt, [$Rn], $SImm9",
3009 let Constraints = "$Rn = $Rn_wb";
3010 let DecoderMethod = "DecodeSingleIndexedInstruction";
3014 def _PreInd_STR : A64I_LSpreind<size, v, {high_opc, 0b0},
3015 (outs GPR64xsp:$Rn_wb),
3016 (ins GPR:$Rt, GPR64xsp:$Rn, simm9:$SImm9),
3017 "str" # asmsuffix # "\t$Rt, [$Rn, $SImm9]!",
3019 let Constraints = "$Rn = $Rn_wb";
3022 // Decoder only needed for unpredictability checking (FIXME).
3023 let DecoderMethod = "DecodeSingleIndexedInstruction";
3026 def _PreInd_LDR : A64I_LSpreind<size, v, {high_opc, 0b1},
3027 (outs GPR:$Rt, GPR64xsp:$Rn_wb),
3028 (ins GPR64xsp:$Rn, simm9:$SImm9),
3029 "ldr" # asmsuffix # "\t$Rt, [$Rn, $SImm9]!",
3032 let Constraints = "$Rn = $Rn_wb";
3033 let DecoderMethod = "DecodeSingleIndexedInstruction";
3038 // STRB/LDRB: First define the instructions
3040 : A64I_LDRSTR_unsigned<"LS8", 0b00, 0b0, 0b0, "b", GPR32, byte_addrparams>;
3044 : A64I_LDRSTR_unsigned<"LS16", 0b01, 0b0, 0b0, "h", GPR32, hword_addrparams>;
3047 // STR/LDR to/from a W register
3049 : A64I_LDRSTR_unsigned<"LS32", 0b10, 0b0, 0b0, "", GPR32, word_addrparams>;
3051 // STR/LDR to/from an X register
3053 : A64I_LDRSTR_unsigned<"LS64", 0b11, 0b0, 0b0, "", GPR64, dword_addrparams>;
3055 // STR/LDR to/from a B register
3057 : A64I_LDRSTR_unsigned<"LSFP8", 0b00, 0b1, 0b0, "", FPR8, byte_addrparams>;
3059 // STR/LDR to/from an H register
3061 : A64I_LDRSTR_unsigned<"LSFP16", 0b01, 0b1, 0b0, "", FPR16, hword_addrparams>;
3063 // STR/LDR to/from an S register
3065 : A64I_LDRSTR_unsigned<"LSFP32", 0b10, 0b1, 0b0, "", FPR32, word_addrparams>;
3066 // STR/LDR to/from a D register
3068 : A64I_LDRSTR_unsigned<"LSFP64", 0b11, 0b1, 0b0, "", FPR64, dword_addrparams>;
3069 // STR/LDR to/from a Q register
3071 : A64I_LDRSTR_unsigned<"LSFP128", 0b00, 0b1, 0b1, "", FPR128,
3074 //===------------------------------
3076 //===------------------------------
3078 // Byte and half-word signed loads can both go into either an X or a W register,
3079 // so it's worth factoring out. Signed word loads don't fit because there is no
3081 multiclass A64I_LDR_signed<bits<2> size, string asmopcode, AddrParams params,
3084 def w : A64I_LSunsigimm<size, 0b0, 0b11,
3086 (ins GPR64xsp:$Rn, params.uimm12:$UImm12),
3087 "ldrs" # asmopcode # "\t$Rt, [$Rn, $UImm12]",
3091 def : InstAlias<"ldrs" # asmopcode # " $Rt, [$Rn]",
3092 (!cast<Instruction>(prefix # w) GPR32:$Rt, GPR64xsp:$Rn, 0)>;
3094 def x : A64I_LSunsigimm<size, 0b0, 0b10,
3096 (ins GPR64xsp:$Rn, params.uimm12:$UImm12),
3097 "ldrs" # asmopcode # "\t$Rt, [$Rn, $UImm12]",
3101 def : InstAlias<"ldrs" # asmopcode # " $Rt, [$Rn]",
3102 (!cast<Instruction>(prefix # x) GPR64:$Rt, GPR64xsp:$Rn, 0)>;
3105 let mayLoad = 1 in {
3106 def w_Wm_RegOffset : A64I_LSregoff<size, 0b0, 0b11, 0b0,
3108 (ins GPR64xsp:$Rn, GPR32:$Rm, params.regextWm:$Ext),
3109 "ldrs" # asmopcode # "\t$Rt, [$Rn, $Rm, $Ext]",
3112 def w_Xm_RegOffset : A64I_LSregoff<size, 0b0, 0b11, 0b1,
3114 (ins GPR64xsp:$Rn, GPR64:$Rm, params.regextXm:$Ext),
3115 "ldrs" # asmopcode # "\t$Rt, [$Rn, $Rm, $Ext]",
3118 def x_Wm_RegOffset : A64I_LSregoff<size, 0b0, 0b10, 0b0,
3120 (ins GPR64xsp:$Rn, GPR32:$Rm, params.regextWm:$Ext),
3121 "ldrs" # asmopcode # "\t$Rt, [$Rn, $Rm, $Ext]",
3124 def x_Xm_RegOffset : A64I_LSregoff<size, 0b0, 0b10, 0b1,
3126 (ins GPR64xsp:$Rn, GPR64:$Rm, params.regextXm:$Ext),
3127 "ldrs" # asmopcode # "\t$Rt, [$Rn, $Rm, $Ext]",
3130 def : InstAlias<"ldrs" # asmopcode # " $Rt, [$Rn, $Rm]",
3131 (!cast<Instruction>(prefix # "w_Xm_RegOffset") GPR32:$Rt, GPR64xsp:$Rn,
3134 def : InstAlias<"ldrs" # asmopcode # " $Rt, [$Rn, $Rm]",
3135 (!cast<Instruction>(prefix # "x_Xm_RegOffset") GPR64:$Rt, GPR64xsp:$Rn,
3139 let mayLoad = 1 in {
3141 def w_U : A64I_LSunalimm<size, 0b0, 0b11,
3143 (ins GPR64xsp:$Rn, simm9:$SImm9),
3144 "ldurs" # asmopcode # "\t$Rt, [$Rn, $SImm9]",
3147 def x_U : A64I_LSunalimm<size, 0b0, 0b10,
3149 (ins GPR64xsp:$Rn, simm9:$SImm9),
3150 "ldurs" # asmopcode # "\t$Rt, [$Rn, $SImm9]",
3155 def w_PostInd : A64I_LSpostind<size, 0b0, 0b11,
3156 (outs GPR32:$Rt, GPR64xsp:$Rn_wb),
3157 (ins GPR64xsp:$Rn, simm9:$SImm9),
3158 "ldrs" # asmopcode # "\t$Rt, [$Rn], $SImm9",
3160 let Constraints = "$Rn = $Rn_wb";
3161 let DecoderMethod = "DecodeSingleIndexedInstruction";
3164 def x_PostInd : A64I_LSpostind<size, 0b0, 0b10,
3165 (outs GPR64:$Rt, GPR64xsp:$Rn_wb),
3166 (ins GPR64xsp:$Rn, simm9:$SImm9),
3167 "ldrs" # asmopcode # "\t$Rt, [$Rn], $SImm9",
3169 let Constraints = "$Rn = $Rn_wb";
3170 let DecoderMethod = "DecodeSingleIndexedInstruction";
3174 def w_PreInd : A64I_LSpreind<size, 0b0, 0b11,
3175 (outs GPR32:$Rt, GPR64xsp:$Rn_wb),
3176 (ins GPR64xsp:$Rn, simm9:$SImm9),
3177 "ldrs" # asmopcode # "\t$Rt, [$Rn, $SImm9]!",
3179 let Constraints = "$Rn = $Rn_wb";
3180 let DecoderMethod = "DecodeSingleIndexedInstruction";
3183 def x_PreInd : A64I_LSpreind<size, 0b0, 0b10,
3184 (outs GPR64:$Rt, GPR64xsp:$Rn_wb),
3185 (ins GPR64xsp:$Rn, simm9:$SImm9),
3186 "ldrs" # asmopcode # "\t$Rt, [$Rn, $SImm9]!",
3188 let Constraints = "$Rn = $Rn_wb";
3189 let DecoderMethod = "DecodeSingleIndexedInstruction";
3191 } // let mayLoad = 1
3195 defm LDRSB : A64I_LDR_signed<0b00, "b", byte_addrparams, "LDRSB">;
3197 defm LDRSH : A64I_LDR_signed<0b01, "h", hword_addrparams, "LDRSH">;
3199 // LDRSW: load a 32-bit register, sign-extending to 64-bits.
3201 : A64I_LSunsigimm<0b10, 0b0, 0b10,
3203 (ins GPR64xsp:$Rn, word_uimm12:$UImm12),
3204 "ldrsw\t$Rt, [$Rn, $UImm12]",
3208 def : InstAlias<"ldrsw $Rt, [$Rn]", (LDRSWx GPR64:$Rt, GPR64xsp:$Rn, 0)>;
3210 let mayLoad = 1 in {
3211 def LDRSWx_Wm_RegOffset : A64I_LSregoff<0b10, 0b0, 0b10, 0b0,
3213 (ins GPR64xsp:$Rn, GPR32:$Rm, word_Wm_regext:$Ext),
3214 "ldrsw\t$Rt, [$Rn, $Rm, $Ext]",
3217 def LDRSWx_Xm_RegOffset : A64I_LSregoff<0b10, 0b0, 0b10, 0b1,
3219 (ins GPR64xsp:$Rn, GPR64:$Rm, word_Xm_regext:$Ext),
3220 "ldrsw\t$Rt, [$Rn, $Rm, $Ext]",
3223 def : InstAlias<"ldrsw $Rt, [$Rn, $Rm]",
3224 (LDRSWx_Xm_RegOffset GPR64:$Rt, GPR64xsp:$Rn, GPR64:$Rm, 2)>;
3228 : A64I_LSunalimm<0b10, 0b0, 0b10,
3230 (ins GPR64xsp:$Rn, simm9:$SImm9),
3231 "ldursw\t$Rt, [$Rn, $SImm9]",
3235 def : InstAlias<"ldursw $Rt, [$Rn]", (LDURSWx GPR64:$Rt, GPR64xsp:$Rn, 0)>;
3238 : A64I_LSpostind<0b10, 0b0, 0b10,
3239 (outs GPR64:$Rt, GPR64xsp:$Rn_wb),
3240 (ins GPR64xsp:$Rn, simm9:$SImm9),
3241 "ldrsw\t$Rt, [$Rn], $SImm9",
3244 let Constraints = "$Rn = $Rn_wb";
3245 let DecoderMethod = "DecodeSingleIndexedInstruction";
3248 def LDRSWx_PreInd : A64I_LSpreind<0b10, 0b0, 0b10,
3249 (outs GPR64:$Rt, GPR64xsp:$Rn_wb),
3250 (ins GPR64xsp:$Rn, simm9:$SImm9),
3251 "ldrsw\t$Rt, [$Rn, $SImm9]!",
3254 let Constraints = "$Rn = $Rn_wb";
3255 let DecoderMethod = "DecodeSingleIndexedInstruction";
3258 //===------------------------------
3259 // 2.4 Prefetch operations
3260 //===------------------------------
3262 def PRFM : A64I_LSunsigimm<0b11, 0b0, 0b10, (outs),
3263 (ins prefetch_op:$Rt, GPR64xsp:$Rn, dword_uimm12:$UImm12),
3264 "prfm\t$Rt, [$Rn, $UImm12]",
3268 def : InstAlias<"prfm $Rt, [$Rn]",
3269 (PRFM prefetch_op:$Rt, GPR64xsp:$Rn, 0)>;
3271 let mayLoad = 1 in {
3272 def PRFM_Wm_RegOffset : A64I_LSregoff<0b11, 0b0, 0b10, 0b0, (outs),
3273 (ins prefetch_op:$Rt, GPR64xsp:$Rn,
3274 GPR32:$Rm, dword_Wm_regext:$Ext),
3275 "prfm\t$Rt, [$Rn, $Rm, $Ext]",
3277 def PRFM_Xm_RegOffset : A64I_LSregoff<0b11, 0b0, 0b10, 0b1, (outs),
3278 (ins prefetch_op:$Rt, GPR64xsp:$Rn,
3279 GPR64:$Rm, dword_Xm_regext:$Ext),
3280 "prfm\t$Rt, [$Rn, $Rm, $Ext]",
3284 def : InstAlias<"prfm $Rt, [$Rn, $Rm]",
3285 (PRFM_Xm_RegOffset prefetch_op:$Rt, GPR64xsp:$Rn,
3289 def PRFUM : A64I_LSunalimm<0b11, 0b0, 0b10, (outs),
3290 (ins prefetch_op:$Rt, GPR64xsp:$Rn, simm9:$SImm9),
3291 "prfum\t$Rt, [$Rn, $SImm9]",
3295 def : InstAlias<"prfum $Rt, [$Rn]",
3296 (PRFUM prefetch_op:$Rt, GPR64xsp:$Rn, 0)>;
3298 //===----------------------------------------------------------------------===//
3299 // Load-store register (unprivileged) instructions
3300 //===----------------------------------------------------------------------===//
3301 // Contains: LDTRB, LDTRH, LDTRSB, LDTRSH, LDTRSW, STTR, STTRB and STTRH
3303 // These instructions very much mirror the "unscaled immediate" loads, but since
3304 // there are no floating-point variants we need to split them out into their own
3305 // section to avoid instantiation of "ldtr d0, [sp]" etc.
3307 multiclass A64I_LDTRSTTR<bits<2> size, string asmsuffix, RegisterClass GPR,
3309 def _UnPriv_STR : A64I_LSunpriv<size, 0b0, 0b00,
3310 (outs), (ins GPR:$Rt, GPR64xsp:$Rn, simm9:$SImm9),
3311 "sttr" # asmsuffix # "\t$Rt, [$Rn, $SImm9]",
3316 def : InstAlias<"sttr" # asmsuffix # " $Rt, [$Rn]",
3317 (!cast<Instruction>(prefix # "_UnPriv_STR") GPR:$Rt, GPR64xsp:$Rn, 0)>;
3319 def _UnPriv_LDR : A64I_LSunpriv<size, 0b0, 0b01,
3320 (outs GPR:$Rt), (ins GPR64xsp:$Rn, simm9:$SImm9),
3321 "ldtr" # asmsuffix # "\t$Rt, [$Rn, $SImm9]",
3326 def : InstAlias<"ldtr" # asmsuffix # " $Rt, [$Rn]",
3327 (!cast<Instruction>(prefix # "_UnPriv_LDR") GPR:$Rt, GPR64xsp:$Rn, 0)>;
3331 // STTRB/LDTRB: First define the instructions
3332 defm LS8 : A64I_LDTRSTTR<0b00, "b", GPR32, "LS8">;
3335 defm LS16 : A64I_LDTRSTTR<0b01, "h", GPR32, "LS16">;
3337 // STTR/LDTR to/from a W register
3338 defm LS32 : A64I_LDTRSTTR<0b10, "", GPR32, "LS32">;
3340 // STTR/LDTR to/from an X register
3341 defm LS64 : A64I_LDTRSTTR<0b11, "", GPR64, "LS64">;
3343 // Now a class for the signed instructions that can go to either 32 or 64
3345 multiclass A64I_LDTR_signed<bits<2> size, string asmopcode, string prefix> {
3346 let mayLoad = 1 in {
3347 def w : A64I_LSunpriv<size, 0b0, 0b11,
3349 (ins GPR64xsp:$Rn, simm9:$SImm9),
3350 "ldtrs" # asmopcode # "\t$Rt, [$Rn, $SImm9]",
3353 def x : A64I_LSunpriv<size, 0b0, 0b10,
3355 (ins GPR64xsp:$Rn, simm9:$SImm9),
3356 "ldtrs" # asmopcode # "\t$Rt, [$Rn, $SImm9]",
3360 def : InstAlias<"ldtrs" # asmopcode # " $Rt, [$Rn]",
3361 (!cast<Instruction>(prefix # "w") GPR32:$Rt, GPR64xsp:$Rn, 0)>;
3363 def : InstAlias<"ldtrs" # asmopcode # " $Rt, [$Rn]",
3364 (!cast<Instruction>(prefix # "x") GPR64:$Rt, GPR64xsp:$Rn, 0)>;
3369 defm LDTRSB : A64I_LDTR_signed<0b00, "b", "LDTRSB">;
3371 defm LDTRSH : A64I_LDTR_signed<0b01, "h", "LDTRSH">;
3373 // And finally LDTRSW which only goes to 64 bits.
3374 def LDTRSWx : A64I_LSunpriv<0b10, 0b0, 0b10,
3376 (ins GPR64xsp:$Rn, simm9:$SImm9),
3377 "ldtrsw\t$Rt, [$Rn, $SImm9]",
3381 def : InstAlias<"ldtrsw $Rt, [$Rn]", (LDTRSWx GPR64:$Rt, GPR64xsp:$Rn, 0)>;
3383 //===----------------------------------------------------------------------===//
3384 // Load-store register pair (offset) instructions
3385 //===----------------------------------------------------------------------===//
3389 //===----------------------------------------------------------------------===//
3390 // Load-store register pair (post-indexed) instructions
3391 //===----------------------------------------------------------------------===//
3392 // Contains: STP, LDP, LDPSW
3396 //===----------------------------------------------------------------------===//
3397 // Load-store register pair (pre-indexed) instructions
3398 //===----------------------------------------------------------------------===//
3399 // Contains: STP, LDP, LDPSW
3403 //===----------------------------------------------------------------------===//
3404 // Load-store non-temporal register pair (offset) instructions
3405 //===----------------------------------------------------------------------===//
3406 // Contains: STNP, LDNP
3409 // Anything that creates an MCInst (Decoding, selection and AsmParsing) has to
3410 // know the access size via some means. An isolated operand does not have this
3411 // information unless told from here, which means we need separate tablegen
3412 // Operands for each access size. This multiclass takes care of instantiating
3413 // the correct template functions in the rest of the backend.
3415 multiclass offsets_simm7<string MemSize, string prefix> {
3416 // The bare signed 7-bit immediate is used in post-indexed instructions, but
3417 // because of the scaling performed a generic "simm7" operand isn't
3418 // appropriate here either.
3419 def simm7_asmoperand : AsmOperandClass {
3420 let Name = "SImm7_Scaled" # MemSize;
3421 let PredicateMethod = "isSImm7Scaled<" # MemSize # ">";
3422 let RenderMethod = "addSImm7ScaledOperands<" # MemSize # ">";
3423 let DiagnosticType = "LoadStoreSImm7_" # MemSize;
3426 def simm7 : Operand<i64> {
3427 let PrintMethod = "printSImm7ScaledOperand<" # MemSize # ">";
3428 let ParserMatchClass = !cast<AsmOperandClass>(prefix # "simm7_asmoperand");
3432 defm word_ : offsets_simm7<"4", "word_">;
3433 defm dword_ : offsets_simm7<"8", "dword_">;
3434 defm qword_ : offsets_simm7<"16", "qword_">;
3436 multiclass A64I_LSPsimple<bits<2> opc, bit v, RegisterClass SomeReg,
3437 Operand simm7, string prefix> {
3438 def _STR : A64I_LSPoffset<opc, v, 0b0, (outs),
3439 (ins SomeReg:$Rt, SomeReg:$Rt2, GPR64xsp:$Rn, simm7:$SImm7),
3440 "stp\t$Rt, $Rt2, [$Rn, $SImm7]", [], NoItinerary> {
3442 let DecoderMethod = "DecodeLDSTPairInstruction";
3444 def : InstAlias<"stp $Rt, $Rt2, [$Rn]",
3445 (!cast<Instruction>(prefix # "_STR") SomeReg:$Rt,
3446 SomeReg:$Rt2, GPR64xsp:$Rn, 0)>;
3448 def _LDR : A64I_LSPoffset<opc, v, 0b1,
3449 (outs SomeReg:$Rt, SomeReg:$Rt2),
3450 (ins GPR64xsp:$Rn, simm7:$SImm7),
3451 "ldp\t$Rt, $Rt2, [$Rn, $SImm7]", [], NoItinerary> {
3453 let DecoderMethod = "DecodeLDSTPairInstruction";
3455 def : InstAlias<"ldp $Rt, $Rt2, [$Rn]",
3456 (!cast<Instruction>(prefix # "_LDR") SomeReg:$Rt,
3457 SomeReg:$Rt2, GPR64xsp:$Rn, 0)>;
3459 def _PostInd_STR : A64I_LSPpostind<opc, v, 0b0,
3460 (outs GPR64xsp:$Rn_wb),
3461 (ins SomeReg:$Rt, SomeReg:$Rt2,
3464 "stp\t$Rt, $Rt2, [$Rn], $SImm7",
3467 let Constraints = "$Rn = $Rn_wb";
3469 // Decoder only needed for unpredictability checking (FIXME).
3470 let DecoderMethod = "DecodeLDSTPairInstruction";
3473 def _PostInd_LDR : A64I_LSPpostind<opc, v, 0b1,
3474 (outs SomeReg:$Rt, SomeReg:$Rt2, GPR64xsp:$Rn_wb),
3475 (ins GPR64xsp:$Rn, simm7:$SImm7),
3476 "ldp\t$Rt, $Rt2, [$Rn], $SImm7",
3479 let Constraints = "$Rn = $Rn_wb";
3480 let DecoderMethod = "DecodeLDSTPairInstruction";
3483 def _PreInd_STR : A64I_LSPpreind<opc, v, 0b0, (outs GPR64xsp:$Rn_wb),
3484 (ins SomeReg:$Rt, SomeReg:$Rt2, GPR64xsp:$Rn, simm7:$SImm7),
3485 "stp\t$Rt, $Rt2, [$Rn, $SImm7]!",
3488 let Constraints = "$Rn = $Rn_wb";
3489 let DecoderMethod = "DecodeLDSTPairInstruction";
3492 def _PreInd_LDR : A64I_LSPpreind<opc, v, 0b1,
3493 (outs SomeReg:$Rt, SomeReg:$Rt2, GPR64xsp:$Rn_wb),
3494 (ins GPR64xsp:$Rn, simm7:$SImm7),
3495 "ldp\t$Rt, $Rt2, [$Rn, $SImm7]!",
3498 let Constraints = "$Rn = $Rn_wb";
3499 let DecoderMethod = "DecodeLDSTPairInstruction";
3502 def _NonTemp_STR : A64I_LSPnontemp<opc, v, 0b0, (outs),
3503 (ins SomeReg:$Rt, SomeReg:$Rt2, GPR64xsp:$Rn, simm7:$SImm7),
3504 "stnp\t$Rt, $Rt2, [$Rn, $SImm7]", [], NoItinerary> {
3506 let DecoderMethod = "DecodeLDSTPairInstruction";
3508 def : InstAlias<"stnp $Rt, $Rt2, [$Rn]",
3509 (!cast<Instruction>(prefix # "_NonTemp_STR") SomeReg:$Rt,
3510 SomeReg:$Rt2, GPR64xsp:$Rn, 0)>;
3512 def _NonTemp_LDR : A64I_LSPnontemp<opc, v, 0b1,
3513 (outs SomeReg:$Rt, SomeReg:$Rt2),
3514 (ins GPR64xsp:$Rn, simm7:$SImm7),
3515 "ldnp\t$Rt, $Rt2, [$Rn, $SImm7]", [], NoItinerary> {
3517 let DecoderMethod = "DecodeLDSTPairInstruction";
3519 def : InstAlias<"ldnp $Rt, $Rt2, [$Rn]",
3520 (!cast<Instruction>(prefix # "_NonTemp_LDR") SomeReg:$Rt,
3521 SomeReg:$Rt2, GPR64xsp:$Rn, 0)>;
3526 defm LSPair32 : A64I_LSPsimple<0b00, 0b0, GPR32, word_simm7, "LSPair32">;
3527 defm LSPair64 : A64I_LSPsimple<0b10, 0b0, GPR64, dword_simm7, "LSPair64">;
3528 defm LSFPPair32 : A64I_LSPsimple<0b00, 0b1, FPR32, word_simm7, "LSFPPair32">;
3529 defm LSFPPair64 : A64I_LSPsimple<0b01, 0b1, FPR64, dword_simm7, "LSFPPair64">;
3530 defm LSFPPair128 : A64I_LSPsimple<0b10, 0b1, FPR128, qword_simm7,
3534 def LDPSWx : A64I_LSPoffset<0b01, 0b0, 0b1,
3535 (outs GPR64:$Rt, GPR64:$Rt2),
3536 (ins GPR64xsp:$Rn, word_simm7:$SImm7),
3537 "ldpsw\t$Rt, $Rt2, [$Rn, $SImm7]", [], NoItinerary> {
3539 let DecoderMethod = "DecodeLDSTPairInstruction";
3541 def : InstAlias<"ldpsw $Rt, $Rt2, [$Rn]",
3542 (LDPSWx GPR64:$Rt, GPR64:$Rt2, GPR64xsp:$Rn, 0)>;
3544 def LDPSWx_PostInd : A64I_LSPpostind<0b01, 0b0, 0b1,
3545 (outs GPR64:$Rt, GPR64:$Rt2, GPR64:$Rn_wb),
3546 (ins GPR64xsp:$Rn, word_simm7:$SImm7),
3547 "ldpsw\t$Rt, $Rt2, [$Rn], $SImm7",
3550 let Constraints = "$Rn = $Rn_wb";
3551 let DecoderMethod = "DecodeLDSTPairInstruction";
3554 def LDPSWx_PreInd : A64I_LSPpreind<0b01, 0b0, 0b1,
3555 (outs GPR64:$Rt, GPR64:$Rt2, GPR64:$Rn_wb),
3556 (ins GPR64xsp:$Rn, word_simm7:$SImm7),
3557 "ldpsw\t$Rt, $Rt2, [$Rn, $SImm7]!",
3560 let Constraints = "$Rn = $Rn_wb";
3561 let DecoderMethod = "DecodeLDSTPairInstruction";
3564 //===----------------------------------------------------------------------===//
3565 // Logical (immediate) instructions
3566 //===----------------------------------------------------------------------===//
3567 // Contains: AND, ORR, EOR, ANDS, + aliases TST, MOV
3569 multiclass logical_imm_operands<string prefix, string note,
3570 int size, ValueType VT> {
3571 def _asmoperand : AsmOperandClass {
3572 let Name = "LogicalImm" # note # size;
3573 let PredicateMethod = "isLogicalImm" # note # "<" # size # ">";
3574 let RenderMethod = "addLogicalImmOperands<" # size # ">";
3575 let DiagnosticType = "LogicalSecondSource";
3579 : Operand<VT>, ComplexPattern<VT, 1, "SelectLogicalImm", [imm]> {
3580 let ParserMatchClass = !cast<AsmOperandClass>(prefix # "_asmoperand");
3581 let PrintMethod = "printLogicalImmOperand<" # size # ">";
3582 let DecoderMethod = "DecodeLogicalImmOperand<" # size # ">";
3586 defm logical_imm32 : logical_imm_operands<"logical_imm32", "", 32, i32>;
3587 defm logical_imm64 : logical_imm_operands<"logical_imm64", "", 64, i64>;
3589 // The mov versions only differ in assembly parsing, where they
3590 // exclude values representable with either MOVZ or MOVN.
3591 defm logical_imm32_mov
3592 : logical_imm_operands<"logical_imm32_mov", "MOV", 32, i32>;
3593 defm logical_imm64_mov
3594 : logical_imm_operands<"logical_imm64_mov", "MOV", 64, i64>;
3597 multiclass A64I_logimmSizes<bits<2> opc, string asmop, SDNode opnode> {
3598 def wwi : A64I_logicalimm<0b0, opc, (outs GPR32wsp:$Rd),
3599 (ins GPR32:$Rn, logical_imm32_operand:$Imm),
3600 !strconcat(asmop, "\t$Rd, $Rn, $Imm"),
3602 (opnode GPR32:$Rn, logical_imm32_operand:$Imm))],
3605 def xxi : A64I_logicalimm<0b1, opc, (outs GPR64xsp:$Rd),
3606 (ins GPR64:$Rn, logical_imm64_operand:$Imm),
3607 !strconcat(asmop, "\t$Rd, $Rn, $Imm"),
3609 (opnode GPR64:$Rn, logical_imm64_operand:$Imm))],
3613 defm AND : A64I_logimmSizes<0b00, "and", and>;
3614 defm ORR : A64I_logimmSizes<0b01, "orr", or>;
3615 defm EOR : A64I_logimmSizes<0b10, "eor", xor>;
3617 let Defs = [NZCV] in {
3618 def ANDSwwi : A64I_logicalimm<0b0, 0b11, (outs GPR32:$Rd),
3619 (ins GPR32:$Rn, logical_imm32_operand:$Imm),
3620 "ands\t$Rd, $Rn, $Imm",
3623 def ANDSxxi : A64I_logicalimm<0b1, 0b11, (outs GPR64:$Rd),
3624 (ins GPR64:$Rn, logical_imm64_operand:$Imm),
3625 "ands\t$Rd, $Rn, $Imm",
3630 def : InstAlias<"tst $Rn, $Imm",
3631 (ANDSwwi WZR, GPR32:$Rn, logical_imm32_operand:$Imm)>;
3632 def : InstAlias<"tst $Rn, $Imm",
3633 (ANDSxxi XZR, GPR64:$Rn, logical_imm64_operand:$Imm)>;
3634 def : InstAlias<"mov $Rd, $Imm",
3635 (ORRwwi GPR32wsp:$Rd, WZR, logical_imm32_mov_operand:$Imm)>;
3636 def : InstAlias<"mov $Rd, $Imm",
3637 (ORRxxi GPR64xsp:$Rd, XZR, logical_imm64_mov_operand:$Imm)>;
3639 //===----------------------------------------------------------------------===//
3640 // Logical (shifted register) instructions
3641 //===----------------------------------------------------------------------===//
3642 // Contains: AND, BIC, ORR, ORN, EOR, EON, ANDS, BICS + aliases TST, MVN, MOV
3644 // Operand for optimizing (icmp (and LHS, RHS), 0, SomeCode). In theory "ANDS"
3645 // behaves differently for unsigned comparisons, so we defensively only allow
3646 // signed or n/a as the operand. In practice "unsigned greater than 0" is "not
3647 // equal to 0" and LLVM gives us this.
3648 def signed_cond : PatLeaf<(cond), [{
3649 return !isUnsignedIntSetCC(N->get());
3653 // These instructions share their "shift" operands with add/sub (shifted
3654 // register instructions). They are defined there.
3656 // N.b. the commutable parameter is just !N. It will be first against the wall
3657 // when the revolution comes.
3658 multiclass logical_shifts<string prefix, bit sf, bits<2> opc,
3659 bit N, bit commutable,
3660 string asmop, SDPatternOperator opfrag, string sty,
3661 RegisterClass GPR, list<Register> defs> {
3662 let isCommutable = commutable, Defs = defs in {
3663 def _lsl : A64I_logicalshift<sf, opc, 0b00, N,
3665 (ins GPR:$Rn, GPR:$Rm,
3666 !cast<Operand>("lsl_operand_" # sty):$Imm6),
3667 !strconcat(asmop, "\t$Rd, $Rn, $Rm, $Imm6"),
3668 [(set GPR:$Rd, (opfrag GPR:$Rn, (shl GPR:$Rm,
3669 !cast<Operand>("lsl_operand_" # sty):$Imm6))
3673 def _lsr : A64I_logicalshift<sf, opc, 0b01, N,
3675 (ins GPR:$Rn, GPR:$Rm,
3676 !cast<Operand>("lsr_operand_" # sty):$Imm6),
3677 !strconcat(asmop, "\t$Rd, $Rn, $Rm, $Imm6"),
3678 [(set GPR:$Rd, (opfrag GPR:$Rn, (srl GPR:$Rm,
3679 !cast<Operand>("lsr_operand_" # sty):$Imm6))
3683 def _asr : A64I_logicalshift<sf, opc, 0b10, N,
3685 (ins GPR:$Rn, GPR:$Rm,
3686 !cast<Operand>("asr_operand_" # sty):$Imm6),
3687 !strconcat(asmop, "\t$Rd, $Rn, $Rm, $Imm6"),
3688 [(set GPR:$Rd, (opfrag GPR:$Rn, (sra GPR:$Rm,
3689 !cast<Operand>("asr_operand_" # sty):$Imm6))
3693 def _ror : A64I_logicalshift<sf, opc, 0b11, N,
3695 (ins GPR:$Rn, GPR:$Rm,
3696 !cast<Operand>("ror_operand_" # sty):$Imm6),
3697 !strconcat(asmop, "\t$Rd, $Rn, $Rm, $Imm6"),
3698 [(set GPR:$Rd, (opfrag GPR:$Rn, (rotr GPR:$Rm,
3699 !cast<Operand>("ror_operand_" # sty):$Imm6))
3705 : InstAlias<!strconcat(asmop, " $Rd, $Rn, $Rm"),
3706 (!cast<Instruction>(prefix # "_lsl") GPR:$Rd, GPR:$Rn,
3709 def : Pat<(opfrag GPR:$Rn, GPR:$Rm),
3710 (!cast<Instruction>(prefix # "_lsl") GPR:$Rn, GPR:$Rm, 0)>;
3713 multiclass logical_sizes<string prefix, bits<2> opc, bit N, bit commutable,
3714 string asmop, SDPatternOperator opfrag,
3715 list<Register> defs> {
3716 defm xxx : logical_shifts<prefix # "xxx", 0b1, opc, N,
3717 commutable, asmop, opfrag, "i64", GPR64, defs>;
3718 defm www : logical_shifts<prefix # "www", 0b0, opc, N,
3719 commutable, asmop, opfrag, "i32", GPR32, defs>;
3723 defm AND : logical_sizes<"AND", 0b00, 0b0, 0b1, "and", and, []>;
3724 defm ORR : logical_sizes<"ORR", 0b01, 0b0, 0b1, "orr", or, []>;
3725 defm EOR : logical_sizes<"EOR", 0b10, 0b0, 0b1, "eor", xor, []>;
3726 defm ANDS : logical_sizes<"ANDS", 0b11, 0b0, 0b1, "ands",
3727 PatFrag<(ops node:$lhs, node:$rhs), (and node:$lhs, node:$rhs),
3728 [{ (void)N; return false; }]>,
3731 defm BIC : logical_sizes<"BIC", 0b00, 0b1, 0b0, "bic",
3732 PatFrag<(ops node:$lhs, node:$rhs),
3733 (and node:$lhs, (not node:$rhs))>, []>;
3734 defm ORN : logical_sizes<"ORN", 0b01, 0b1, 0b0, "orn",
3735 PatFrag<(ops node:$lhs, node:$rhs),
3736 (or node:$lhs, (not node:$rhs))>, []>;
3737 defm EON : logical_sizes<"EON", 0b10, 0b1, 0b0, "eon",
3738 PatFrag<(ops node:$lhs, node:$rhs),
3739 (xor node:$lhs, (not node:$rhs))>, []>;
3740 defm BICS : logical_sizes<"BICS", 0b11, 0b1, 0b0, "bics",
3741 PatFrag<(ops node:$lhs, node:$rhs),
3742 (and node:$lhs, (not node:$rhs)),
3743 [{ (void)N; return false; }]>,
3746 multiclass tst_shifts<string prefix, bit sf, string sty, RegisterClass GPR> {
3747 let isCommutable = 1, Rd = 0b11111, Defs = [NZCV] in {
3748 def _lsl : A64I_logicalshift<sf, 0b11, 0b00, 0b0,
3750 (ins GPR:$Rn, GPR:$Rm,
3751 !cast<Operand>("lsl_operand_" # sty):$Imm6),
3752 "tst\t$Rn, $Rm, $Imm6",
3753 [(set NZCV, (A64setcc (and GPR:$Rn, (shl GPR:$Rm,
3754 !cast<Operand>("lsl_operand_" # sty):$Imm6)),
3759 def _lsr : A64I_logicalshift<sf, 0b11, 0b01, 0b0,
3761 (ins GPR:$Rn, GPR:$Rm,
3762 !cast<Operand>("lsr_operand_" # sty):$Imm6),
3763 "tst\t$Rn, $Rm, $Imm6",
3764 [(set NZCV, (A64setcc (and GPR:$Rn, (srl GPR:$Rm,
3765 !cast<Operand>("lsr_operand_" # sty):$Imm6)),
3769 def _asr : A64I_logicalshift<sf, 0b11, 0b10, 0b0,
3771 (ins GPR:$Rn, GPR:$Rm,
3772 !cast<Operand>("asr_operand_" # sty):$Imm6),
3773 "tst\t$Rn, $Rm, $Imm6",
3774 [(set NZCV, (A64setcc (and GPR:$Rn, (sra GPR:$Rm,
3775 !cast<Operand>("asr_operand_" # sty):$Imm6)),
3779 def _ror : A64I_logicalshift<sf, 0b11, 0b11, 0b0,
3781 (ins GPR:$Rn, GPR:$Rm,
3782 !cast<Operand>("ror_operand_" # sty):$Imm6),
3783 "tst\t$Rn, $Rm, $Imm6",
3784 [(set NZCV, (A64setcc (and GPR:$Rn, (rotr GPR:$Rm,
3785 !cast<Operand>("ror_operand_" # sty):$Imm6)),
3790 def _noshift : InstAlias<"tst $Rn, $Rm",
3791 (!cast<Instruction>(prefix # "_lsl") GPR:$Rn, GPR:$Rm, 0)>;
3793 def : Pat<(A64setcc (and GPR:$Rn, GPR:$Rm), 0, signed_cond),
3794 (!cast<Instruction>(prefix # "_lsl") GPR:$Rn, GPR:$Rm, 0)>;
3797 defm TSTxx : tst_shifts<"TSTxx", 0b1, "i64", GPR64>;
3798 defm TSTww : tst_shifts<"TSTww", 0b0, "i32", GPR32>;
3801 multiclass mvn_shifts<string prefix, bit sf, string sty, RegisterClass GPR> {
3802 let isCommutable = 0, Rn = 0b11111 in {
3803 def _lsl : A64I_logicalshift<sf, 0b01, 0b00, 0b1,
3806 !cast<Operand>("lsl_operand_" # sty):$Imm6),
3807 "mvn\t$Rd, $Rm, $Imm6",
3808 [(set GPR:$Rd, (not (shl GPR:$Rm,
3809 !cast<Operand>("lsl_operand_" # sty):$Imm6)))],
3813 def _lsr : A64I_logicalshift<sf, 0b01, 0b01, 0b1,
3816 !cast<Operand>("lsr_operand_" # sty):$Imm6),
3817 "mvn\t$Rd, $Rm, $Imm6",
3818 [(set GPR:$Rd, (not (srl GPR:$Rm,
3819 !cast<Operand>("lsr_operand_" # sty):$Imm6)))],
3822 def _asr : A64I_logicalshift<sf, 0b01, 0b10, 0b1,
3825 !cast<Operand>("asr_operand_" # sty):$Imm6),
3826 "mvn\t$Rd, $Rm, $Imm6",
3827 [(set GPR:$Rd, (not (sra GPR:$Rm,
3828 !cast<Operand>("asr_operand_" # sty):$Imm6)))],
3831 def _ror : A64I_logicalshift<sf, 0b01, 0b11, 0b1,
3834 !cast<Operand>("ror_operand_" # sty):$Imm6),
3835 "mvn\t$Rd, $Rm, $Imm6",
3836 [(set GPR:$Rd, (not (rotr GPR:$Rm,
3837 !cast<Operand>("lsl_operand_" # sty):$Imm6)))],
3841 def _noshift : InstAlias<"mvn $Rn, $Rm",
3842 (!cast<Instruction>(prefix # "_lsl") GPR:$Rn, GPR:$Rm, 0)>;
3844 def : Pat<(not GPR:$Rm),
3845 (!cast<Instruction>(prefix # "_lsl") GPR:$Rm, 0)>;
3848 defm MVNxx : mvn_shifts<"MVNxx", 0b1, "i64", GPR64>;
3849 defm MVNww : mvn_shifts<"MVNww", 0b0, "i32", GPR32>;
3851 def MOVxx :InstAlias<"mov $Rd, $Rm", (ORRxxx_lsl GPR64:$Rd, XZR, GPR64:$Rm, 0)>;
3852 def MOVww :InstAlias<"mov $Rd, $Rm", (ORRwww_lsl GPR32:$Rd, WZR, GPR32:$Rm, 0)>;
3854 //===----------------------------------------------------------------------===//
3855 // Move wide (immediate) instructions
3856 //===----------------------------------------------------------------------===//
3857 // Contains: MOVN, MOVZ, MOVK + MOV aliases
3859 // A wide variety of different relocations are needed for variants of these
3860 // instructions, so it turns out that we need a different operand for all of
3862 multiclass movw_operands<string prefix, string instname, int width> {
3863 def _imm_asmoperand : AsmOperandClass {
3864 let Name = instname # width # "Shifted" # shift;
3865 let PredicateMethod = "is" # instname # width # "Imm";
3866 let RenderMethod = "addMoveWideImmOperands";
3867 let ParserMethod = "ParseImmWithLSLOperand";
3868 let DiagnosticType = "MOVWUImm16";
3871 def _imm : Operand<i32> {
3872 let ParserMatchClass = !cast<AsmOperandClass>(prefix # "_imm_asmoperand");
3873 let PrintMethod = "printMoveWideImmOperand";
3874 let EncoderMethod = "getMoveWideImmOpValue";
3875 let DecoderMethod = "DecodeMoveWideImmOperand<" # width # ">";
3877 let MIOperandInfo = (ops uimm16:$UImm16, imm:$Shift);
3881 defm movn32 : movw_operands<"movn32", "MOVN", 32>;
3882 defm movn64 : movw_operands<"movn64", "MOVN", 64>;
3883 defm movz32 : movw_operands<"movz32", "MOVZ", 32>;
3884 defm movz64 : movw_operands<"movz64", "MOVZ", 64>;
3885 defm movk32 : movw_operands<"movk32", "MOVK", 32>;
3886 defm movk64 : movw_operands<"movk64", "MOVK", 64>;
3888 multiclass A64I_movwSizes<bits<2> opc, string asmop, dag ins32bit,
3891 def wii : A64I_movw<0b0, opc, (outs GPR32:$Rd), ins32bit,
3892 !strconcat(asmop, "\t$Rd, $FullImm"),
3895 let UImm16 = FullImm{15-0};
3896 let Shift = FullImm{17-16};
3899 def xii : A64I_movw<0b1, opc, (outs GPR64:$Rd), ins64bit,
3900 !strconcat(asmop, "\t$Rd, $FullImm"),
3903 let UImm16 = FullImm{15-0};
3904 let Shift = FullImm{17-16};
3908 let isMoveImm = 1, isReMaterializable = 1,
3909 isAsCheapAsAMove = 1, hasSideEffects = 0 in {
3910 defm MOVN : A64I_movwSizes<0b00, "movn",
3911 (ins movn32_imm:$FullImm),
3912 (ins movn64_imm:$FullImm)>;
3914 // Some relocations are able to convert between a MOVZ and a MOVN. If these
3915 // are applied the instruction must be emitted with the corresponding bits as
3916 // 0, which means a MOVZ needs to override that bit from the default.
3917 let PostEncoderMethod = "fixMOVZ" in
3918 defm MOVZ : A64I_movwSizes<0b10, "movz",
3919 (ins movz32_imm:$FullImm),
3920 (ins movz64_imm:$FullImm)>;
3923 let Constraints = "$src = $Rd" in
3924 defm MOVK : A64I_movwSizes<0b11, "movk",
3925 (ins GPR32:$src, movk32_imm:$FullImm),
3926 (ins GPR64:$src, movk64_imm:$FullImm)>;
3929 // And now the "MOV" aliases. These also need their own operands because what
3930 // they accept is completely different to what the base instructions accept.
3931 multiclass movalias_operand<string prefix, string basename,
3932 string immpredicate, int width> {
3933 def _asmoperand : AsmOperandClass {
3934 let Name = basename # width # "MovAlias";
3936 = "isMoveWideMovAlias<" # width # ", A64Imms::" # immpredicate # ">";
3938 = "addMoveWideMovAliasOperands<" # width # ", "
3939 # "A64Imms::" # immpredicate # ">";
3942 def _movimm : Operand<i32> {
3943 let ParserMatchClass = !cast<AsmOperandClass>(prefix # "_asmoperand");
3945 let MIOperandInfo = (ops uimm16:$UImm16, imm:$Shift);
3949 defm movz32 : movalias_operand<"movz32", "MOVZ", "isMOVZImm", 32>;
3950 defm movz64 : movalias_operand<"movz64", "MOVZ", "isMOVZImm", 64>;
3951 defm movn32 : movalias_operand<"movn32", "MOVN", "isOnlyMOVNImm", 32>;
3952 defm movn64 : movalias_operand<"movn64", "MOVN", "isOnlyMOVNImm", 64>;
3954 // FIXME: these are officially canonical aliases, but TableGen is too limited to
3955 // print them at the moment. I believe in this case an "AliasPredicate" method
3956 // will need to be implemented. to allow it, as well as the more generally
3957 // useful handling of non-register, non-constant operands.
3958 class movalias<Instruction INST, RegisterClass GPR, Operand operand>
3959 : InstAlias<"mov $Rd, $FullImm", (INST GPR:$Rd, operand:$FullImm)>;
3961 def : movalias<MOVZwii, GPR32, movz32_movimm>;
3962 def : movalias<MOVZxii, GPR64, movz64_movimm>;
3963 def : movalias<MOVNwii, GPR32, movn32_movimm>;
3964 def : movalias<MOVNxii, GPR64, movn64_movimm>;
3966 //===----------------------------------------------------------------------===//
3967 // PC-relative addressing instructions
3968 //===----------------------------------------------------------------------===//
3969 // Contains: ADR, ADRP
3971 def adr_label : Operand<i64> {
3972 let EncoderMethod = "getLabelOpValue<AArch64::fixup_a64_adr_prel>";
3974 // This label is a 21-bit offset from PC, unscaled
3975 let PrintMethod = "printLabelOperand<21, 1>";
3976 let ParserMatchClass = label_asmoperand<21, 1>;
3977 let OperandType = "OPERAND_PCREL";
3980 def adrp_label_asmoperand : AsmOperandClass {
3981 let Name = "AdrpLabel";
3982 let RenderMethod = "addLabelOperands<21, 4096>";
3983 let DiagnosticType = "Label";
3986 def adrp_label : Operand<i64> {
3987 let EncoderMethod = "getAdrpLabelOpValue";
3989 // This label is a 21-bit offset from PC, scaled by the page-size: 4096.
3990 let PrintMethod = "printLabelOperand<21, 4096>";
3991 let ParserMatchClass = adrp_label_asmoperand;
3992 let OperandType = "OPERAND_PCREL";
3995 let hasSideEffects = 0 in {
3996 def ADRxi : A64I_PCADR<0b0, (outs GPR64:$Rd), (ins adr_label:$Label),
3997 "adr\t$Rd, $Label", [], NoItinerary>;
3999 def ADRPxi : A64I_PCADR<0b1, (outs GPR64:$Rd), (ins adrp_label:$Label),
4000 "adrp\t$Rd, $Label", [], NoItinerary>;
4003 //===----------------------------------------------------------------------===//
4004 // System instructions
4005 //===----------------------------------------------------------------------===//
4006 // Contains: HINT, CLREX, DSB, DMB, ISB, MSR, SYS, SYSL, MRS
4007 // + aliases IC, DC, AT, TLBI, NOP, YIELD, WFE, WFI, SEV, SEVL
4009 // Op1 and Op2 fields are sometimes simple 3-bit unsigned immediate values.
4010 def uimm3_asmoperand : AsmOperandClass {
4012 let PredicateMethod = "isUImm<3>";
4013 let RenderMethod = "addImmOperands";
4014 let DiagnosticType = "UImm3";
4017 def uimm3 : Operand<i32> {
4018 let ParserMatchClass = uimm3_asmoperand;
4021 // The HINT alias can accept a simple unsigned 7-bit immediate.
4022 def uimm7_asmoperand : AsmOperandClass {
4024 let PredicateMethod = "isUImm<7>";
4025 let RenderMethod = "addImmOperands";
4026 let DiagnosticType = "UImm7";
4029 def uimm7 : Operand<i32> {
4030 let ParserMatchClass = uimm7_asmoperand;
4033 // Multiclass namedimm is defined with the prefetch operands. Most of these fit
4034 // into the NamedImmMapper scheme well: they either accept a named operand or
4035 // any immediate under a particular value (which may be 0, implying no immediate
4037 defm dbarrier : namedimm<"dbarrier", "A64DB::DBarrierMapper">;
4038 defm isb : namedimm<"isb", "A64ISB::ISBMapper">;
4039 defm ic : namedimm<"ic", "A64IC::ICMapper">;
4040 defm dc : namedimm<"dc", "A64DC::DCMapper">;
4041 defm at : namedimm<"at", "A64AT::ATMapper">;
4042 defm tlbi : namedimm<"tlbi", "A64TLBI::TLBIMapper">;
4044 // However, MRS and MSR are more complicated for a few reasons:
4045 // * There are ~1000 generic names S3_<op1>_<CRn>_<CRm>_<Op2> which have an
4046 // implementation-defined effect
4047 // * Most registers are shared, but some are read-only or write-only.
4048 // * There is a variant of MSR which accepts the same register name (SPSel),
4049 // but which would have a different encoding.
4051 // In principle these could be resolved in with more complicated subclasses of
4052 // NamedImmMapper, however that imposes an overhead on other "named
4053 // immediates". Both in concrete terms with virtual tables and in unnecessary
4056 // The solution adopted here is to take the MRS/MSR Mappers out of the usual
4057 // hierarchy (they're not derived from NamedImmMapper) and to add logic for
4058 // their special situation.
4059 def mrs_asmoperand : AsmOperandClass {
4061 let ParserMethod = "ParseSysRegOperand";
4062 let DiagnosticType = "MRS";
4065 def mrs_op : Operand<i32> {
4066 let ParserMatchClass = mrs_asmoperand;
4067 let PrintMethod = "printMRSOperand";
4068 let DecoderMethod = "DecodeMRSOperand";
4071 def msr_asmoperand : AsmOperandClass {
4072 let Name = "MSRWithReg";
4074 // Note that SPSel is valid for both this and the pstate operands, but with
4075 // different immediate encodings. This is why these operands provide a string
4076 // AArch64Operand rather than an immediate. The overlap is small enough that
4077 // it could be resolved with hackery now, but who can say in future?
4078 let ParserMethod = "ParseSysRegOperand";
4079 let DiagnosticType = "MSR";
4082 def msr_op : Operand<i32> {
4083 let ParserMatchClass = msr_asmoperand;
4084 let PrintMethod = "printMSROperand";
4085 let DecoderMethod = "DecodeMSROperand";
4088 def pstate_asmoperand : AsmOperandClass {
4089 let Name = "MSRPState";
4090 // See comment above about parser.
4091 let ParserMethod = "ParseSysRegOperand";
4092 let DiagnosticType = "MSR";
4095 def pstate_op : Operand<i32> {
4096 let ParserMatchClass = pstate_asmoperand;
4097 let PrintMethod = "printNamedImmOperand<A64PState::PStateMapper>";
4098 let DecoderMethod = "DecodeNamedImmOperand<A64PState::PStateMapper>";
4101 // When <CRn> is specified, an assembler should accept something like "C4", not
4102 // the usual "#4" immediate.
4103 def CRx_asmoperand : AsmOperandClass {
4105 let PredicateMethod = "isUImm<4>";
4106 let RenderMethod = "addImmOperands";
4107 let ParserMethod = "ParseCRxOperand";
4108 // Diagnostics are handled in all cases by ParseCRxOperand.
4111 def CRx : Operand<i32> {
4112 let ParserMatchClass = CRx_asmoperand;
4113 let PrintMethod = "printCRxOperand";
4117 // Finally, we can start defining the instructions.
4119 // HINT is straightforward, with a few aliases.
4120 def HINTi : A64I_system<0b0, (outs), (ins uimm7:$UImm7), "hint\t$UImm7",
4123 let CRm = UImm7{6-3};
4124 let Op2 = UImm7{2-0};
4132 def : InstAlias<"nop", (HINTi 0)>;
4133 def : InstAlias<"yield", (HINTi 1)>;
4134 def : InstAlias<"wfe", (HINTi 2)>;
4135 def : InstAlias<"wfi", (HINTi 3)>;
4136 def : InstAlias<"sev", (HINTi 4)>;
4137 def : InstAlias<"sevl", (HINTi 5)>;
4139 // Quite a few instructions then follow a similar pattern of fixing common
4140 // fields in the bitpattern, we'll define a helper-class for them.
4141 class simple_sys<bits<2> op0, bits<3> op1, bits<4> crn, bits<3> op2,
4142 Operand operand, string asmop>
4143 : A64I_system<0b0, (outs), (ins operand:$CRm), !strconcat(asmop, "\t$CRm"),
4153 def CLREXi : simple_sys<0b00, 0b011, 0b0011, 0b010, uimm4, "clrex">;
4154 def DSBi : simple_sys<0b00, 0b011, 0b0011, 0b100, dbarrier_op, "dsb">;
4155 def DMBi : simple_sys<0b00, 0b011, 0b0011, 0b101, dbarrier_op, "dmb">;
4156 def ISBi : simple_sys<0b00, 0b011, 0b0011, 0b110, isb_op, "isb">;
4158 def : InstAlias<"clrex", (CLREXi 0b1111)>;
4159 def : InstAlias<"isb", (ISBi 0b1111)>;
4161 // (DMBi 0xb) is a "DMB ISH" instruciton, appropriate for Linux SMP
4162 // configurations at least.
4163 def : Pat<(atomic_fence imm, imm), (DMBi 0xb)>;
4165 // Any SYS bitpattern can be represented with a complex and opaque "SYS"
4167 def SYSiccix : A64I_system<0b0, (outs),
4168 (ins uimm3:$Op1, CRx:$CRn, CRx:$CRm,
4169 uimm3:$Op2, GPR64:$Rt),
4170 "sys\t$Op1, $CRn, $CRm, $Op2, $Rt",
4175 // You can skip the Xt argument whether it makes sense or not for the generic
4177 def : InstAlias<"sys $Op1, $CRn, $CRm, $Op2",
4178 (SYSiccix uimm3:$Op1, CRx:$CRn, CRx:$CRm, uimm3:$Op2, XZR)>;
4181 // But many have aliases, which obviously don't fit into
4182 class SYSalias<dag ins, string asmstring>
4183 : A64I_system<0b0, (outs), ins, asmstring, [], NoItinerary> {
4184 let isAsmParserOnly = 1;
4188 let Op1 = SysOp{13-11};
4189 let CRn = SysOp{10-7};
4190 let CRm = SysOp{6-3};
4191 let Op2 = SysOp{2-0};
4194 def ICix : SYSalias<(ins ic_op:$SysOp, GPR64:$Rt), "ic\t$SysOp, $Rt">;
4196 def ICi : SYSalias<(ins ic_op:$SysOp), "ic\t$SysOp"> {
4200 def DCix : SYSalias<(ins dc_op:$SysOp, GPR64:$Rt), "dc\t$SysOp, $Rt">;
4201 def ATix : SYSalias<(ins at_op:$SysOp, GPR64:$Rt), "at\t$SysOp, $Rt">;
4203 def TLBIix : SYSalias<(ins tlbi_op:$SysOp, GPR64:$Rt), "tlbi\t$SysOp, $Rt">;
4205 def TLBIi : SYSalias<(ins tlbi_op:$SysOp), "tlbi\t$SysOp"> {
4210 def SYSLxicci : A64I_system<0b1, (outs GPR64:$Rt),
4211 (ins uimm3:$Op1, CRx:$CRn, CRx:$CRm, uimm3:$Op2),
4212 "sysl\t$Rt, $Op1, $CRn, $CRm, $Op2",
4217 // The instructions themselves are rather simple for MSR and MRS.
4218 def MSRix : A64I_system<0b0, (outs), (ins msr_op:$SysReg, GPR64:$Rt),
4219 "msr\t$SysReg, $Rt", [], NoItinerary> {
4221 let Op0 = SysReg{15-14};
4222 let Op1 = SysReg{13-11};
4223 let CRn = SysReg{10-7};
4224 let CRm = SysReg{6-3};
4225 let Op2 = SysReg{2-0};
4228 def MRSxi : A64I_system<0b1, (outs GPR64:$Rt), (ins mrs_op:$SysReg),
4229 "mrs\t$Rt, $SysReg", [], NoItinerary> {
4231 let Op0 = SysReg{15-14};
4232 let Op1 = SysReg{13-11};
4233 let CRn = SysReg{10-7};
4234 let CRm = SysReg{6-3};
4235 let Op2 = SysReg{2-0};
4238 def MSRii : A64I_system<0b0, (outs), (ins pstate_op:$PState, uimm4:$CRm),
4239 "msr\t$PState, $CRm", [], NoItinerary> {
4243 let Op1 = PState{5-3};
4245 let Op2 = PState{2-0};
4249 //===----------------------------------------------------------------------===//
4250 // Test & branch (immediate) instructions
4251 //===----------------------------------------------------------------------===//
4252 // Contains: TBZ, TBNZ
4254 // The bit to test is a simple unsigned 6-bit immediate in the X-register
4256 def uimm6 : Operand<i64> {
4257 let ParserMatchClass = uimm6_asmoperand;
4260 def label_wid14_scal4_asmoperand : label_asmoperand<14, 4>;
4262 def tbimm_target : Operand<OtherVT> {
4263 let EncoderMethod = "getLabelOpValue<AArch64::fixup_a64_tstbr>";
4265 // This label is a 14-bit offset from PC, scaled by the instruction-width: 4.
4266 let PrintMethod = "printLabelOperand<14, 4>";
4267 let ParserMatchClass = label_wid14_scal4_asmoperand;
4269 let OperandType = "OPERAND_PCREL";
4272 def A64eq : ImmLeaf<i32, [{ return Imm == A64CC::EQ; }]>;
4273 def A64ne : ImmLeaf<i32, [{ return Imm == A64CC::NE; }]>;
4275 // These instructions correspond to patterns involving "and" with a power of
4276 // two, which we need to be able to select.
4277 def tstb64_pat : ComplexPattern<i64, 1, "SelectTSTBOperand<64>">;
4278 def tstb32_pat : ComplexPattern<i32, 1, "SelectTSTBOperand<32>">;
4280 let isBranch = 1, isTerminator = 1 in {
4281 def TBZxii : A64I_TBimm<0b0, (outs),
4282 (ins GPR64:$Rt, uimm6:$Imm, tbimm_target:$Label),
4283 "tbz\t$Rt, $Imm, $Label",
4284 [(A64br_cc (A64cmp (and GPR64:$Rt, tstb64_pat:$Imm), 0),
4288 def TBNZxii : A64I_TBimm<0b1, (outs),
4289 (ins GPR64:$Rt, uimm6:$Imm, tbimm_target:$Label),
4290 "tbnz\t$Rt, $Imm, $Label",
4291 [(A64br_cc (A64cmp (and GPR64:$Rt, tstb64_pat:$Imm), 0),
4296 // Note, these instructions overlap with the above 64-bit patterns. This is
4297 // intentional, "tbz x3, #1, somewhere" and "tbz w3, #1, somewhere" would both
4298 // do the same thing and are both permitted assembly. They also both have
4299 // sensible DAG patterns.
4300 def TBZwii : A64I_TBimm<0b0, (outs),
4301 (ins GPR32:$Rt, uimm5:$Imm, tbimm_target:$Label),
4302 "tbz\t$Rt, $Imm, $Label",
4303 [(A64br_cc (A64cmp (and GPR32:$Rt, tstb32_pat:$Imm), 0),
4309 def TBNZwii : A64I_TBimm<0b1, (outs),
4310 (ins GPR32:$Rt, uimm5:$Imm, tbimm_target:$Label),
4311 "tbnz\t$Rt, $Imm, $Label",
4312 [(A64br_cc (A64cmp (and GPR32:$Rt, tstb32_pat:$Imm), 0),
4319 //===----------------------------------------------------------------------===//
4320 // Unconditional branch (immediate) instructions
4321 //===----------------------------------------------------------------------===//
4324 def label_wid26_scal4_asmoperand : label_asmoperand<26, 4>;
4326 def bimm_target : Operand<OtherVT> {
4327 let EncoderMethod = "getLabelOpValue<AArch64::fixup_a64_uncondbr>";
4329 // This label is a 26-bit offset from PC, scaled by the instruction-width: 4.
4330 let PrintMethod = "printLabelOperand<26, 4>";
4331 let ParserMatchClass = label_wid26_scal4_asmoperand;
4333 let OperandType = "OPERAND_PCREL";
4336 def blimm_target : Operand<i64> {
4337 let EncoderMethod = "getLabelOpValue<AArch64::fixup_a64_call>";
4339 // This label is a 26-bit offset from PC, scaled by the instruction-width: 4.
4340 let PrintMethod = "printLabelOperand<26, 4>";
4341 let ParserMatchClass = label_wid26_scal4_asmoperand;
4343 let OperandType = "OPERAND_PCREL";
4346 class A64I_BimmImpl<bit op, string asmop, list<dag> patterns, Operand lbl_type>
4347 : A64I_Bimm<op, (outs), (ins lbl_type:$Label),
4348 !strconcat(asmop, "\t$Label"), patterns,
4351 let isBranch = 1 in {
4352 def Bimm : A64I_BimmImpl<0b0, "b", [(br bb:$Label)], bimm_target> {
4353 let isTerminator = 1;
4357 def BLimm : A64I_BimmImpl<0b1, "bl",
4358 [(AArch64Call tglobaladdr:$Label)], blimm_target> {
4364 def : Pat<(AArch64Call texternalsym:$Label), (BLimm texternalsym:$Label)>;
4366 //===----------------------------------------------------------------------===//
4367 // Unconditional branch (register) instructions
4368 //===----------------------------------------------------------------------===//
4369 // Contains: BR, BLR, RET, ERET, DRP.
4371 // Most of the notional opcode fields in the A64I_Breg format are fixed in A64
4373 class A64I_BregImpl<bits<4> opc,
4374 dag outs, dag ins, string asmstr, list<dag> patterns,
4375 InstrItinClass itin = NoItinerary>
4376 : A64I_Breg<opc, 0b11111, 0b000000, 0b00000,
4377 outs, ins, asmstr, patterns, itin> {
4379 let isIndirectBranch = 1;
4382 // Note that these are not marked isCall or isReturn because as far as LLVM is
4383 // concerned they're not. "ret" is just another jump unless it has been selected
4384 // by LLVM as the function's return.
4386 let isBranch = 1 in {
4387 def BRx : A64I_BregImpl<0b0000,(outs), (ins GPR64:$Rn),
4388 "br\t$Rn", [(brind GPR64:$Rn)]> {
4390 let isTerminator = 1;
4393 def BLRx : A64I_BregImpl<0b0001, (outs), (ins GPR64:$Rn),
4394 "blr\t$Rn", [(AArch64Call GPR64:$Rn)]> {
4400 def RETx : A64I_BregImpl<0b0010, (outs), (ins GPR64:$Rn),
4403 let isTerminator = 1;
4407 // Create a separate pseudo-instruction for codegen to use so that we don't
4408 // flag x30 as used in every function. It'll be restored before the RET by the
4409 // epilogue if it's legitimately used.
4410 def RET : A64PseudoExpand<(outs), (ins), [(A64ret)], (RETx (ops X30))> {
4411 let isTerminator = 1;
4416 def ERET : A64I_BregImpl<0b0100, (outs), (ins), "eret", []> {
4419 let isTerminator = 1;
4423 def DRPS : A64I_BregImpl<0b0101, (outs), (ins), "drps", []> {
4429 def RETAlias : InstAlias<"ret", (RETx X30)>;
4432 //===----------------------------------------------------------------------===//
4433 // Address generation patterns
4434 //===----------------------------------------------------------------------===//
4436 // Primary method of address generation for the small/absolute memory model is
4437 // an ADRP/ADR pair:
4438 // ADRP x0, some_variable
4439 // ADD x0, x0, #:lo12:some_variable
4441 // The load/store elision of the ADD is accomplished when selecting
4442 // addressing-modes. This just mops up the cases where that doesn't work and we
4443 // really need an address in some register.
4445 // This wrapper applies a LO12 modifier to the address. Otherwise we could just
4446 // use the same address.
4448 class ADRP_ADD<SDNode Wrapper, SDNode addrop>
4449 : Pat<(Wrapper addrop:$Hi, addrop:$Lo12, (i32 imm)),
4450 (ADDxxi_lsl0_s (ADRPxi addrop:$Hi), addrop:$Lo12)>;
4452 def : ADRP_ADD<A64WrapperSmall, tblockaddress>;
4453 def : ADRP_ADD<A64WrapperSmall, texternalsym>;
4454 def : ADRP_ADD<A64WrapperSmall, tglobaladdr>;
4455 def : ADRP_ADD<A64WrapperSmall, tglobaltlsaddr>;
4456 def : ADRP_ADD<A64WrapperSmall, tjumptable>;
4458 //===----------------------------------------------------------------------===//
4459 // GOT access patterns
4460 //===----------------------------------------------------------------------===//
4464 class GOTLoadSmall<SDNode addrfrag>
4465 : Pat<(A64GOTLoad (A64WrapperSmall addrfrag:$Hi, addrfrag:$Lo12, 8)),
4466 (LS64_LDR (ADRPxi addrfrag:$Hi), addrfrag:$Lo12)>;
4468 def : GOTLoadSmall<texternalsym>;
4469 def : GOTLoadSmall<tglobaladdr>;
4470 def : GOTLoadSmall<tglobaltlsaddr>;
4472 //===----------------------------------------------------------------------===//
4473 // Tail call handling
4474 //===----------------------------------------------------------------------===//
4476 let isCall = 1, isTerminator = 1, isReturn = 1, isBarrier = 1, Uses = [XSP] in {
4478 : PseudoInst<(outs), (ins i64imm:$dst, i32imm:$FPDiff),
4479 [(AArch64tcret tglobaladdr:$dst, (i32 timm:$FPDiff))]>;
4482 : PseudoInst<(outs), (ins tcGPR64:$dst, i32imm:$FPDiff),
4483 [(AArch64tcret tcGPR64:$dst, (i32 timm:$FPDiff))]>;
4486 let isCall = 1, isTerminator = 1, isReturn = 1, isBarrier = 1,
4488 def TAIL_Bimm : A64PseudoExpand<(outs), (ins bimm_target:$Label), [],
4489 (Bimm bimm_target:$Label)>;
4491 def TAIL_BRx : A64PseudoExpand<(outs), (ins tcGPR64:$Rd), [],
4496 def : Pat<(AArch64tcret texternalsym:$dst, (i32 timm:$FPDiff)),
4497 (TC_RETURNdi texternalsym:$dst, imm:$FPDiff)>;
4499 //===----------------------------------------------------------------------===//
4500 // Thread local storage
4501 //===----------------------------------------------------------------------===//
4503 // This is a pseudo-instruction representing the ".tlsdesccall" directive in
4504 // assembly. Its effect is to insert an R_AARCH64_TLSDESC_CALL relocation at the
4505 // current location. It should always be immediately followed by a BLR
4506 // instruction, and is intended solely for relaxation by the linker.
4508 def : Pat<(A64threadpointer), (MRSxi 0xde82)>;
4510 def TLSDESCCALL : PseudoInst<(outs), (ins i64imm:$Lbl), []> {
4511 let hasSideEffects = 1;
4514 def TLSDESC_BLRx : PseudoInst<(outs), (ins GPR64:$Rn, i64imm:$Var),
4515 [(A64tlsdesc_blr GPR64:$Rn, tglobaltlsaddr:$Var)]> {
4520 def : Pat<(A64tlsdesc_blr GPR64:$Rn, texternalsym:$Var),
4521 (TLSDESC_BLRx GPR64:$Rn, texternalsym:$Var)>;
4523 //===----------------------------------------------------------------------===//
4524 // Bitfield patterns
4525 //===----------------------------------------------------------------------===//
4527 def bfi32_lsb_to_immr : SDNodeXForm<imm, [{
4528 return CurDAG->getTargetConstant((32 - N->getZExtValue()) % 32, MVT::i64);
4531 def bfi64_lsb_to_immr : SDNodeXForm<imm, [{
4532 return CurDAG->getTargetConstant((64 - N->getZExtValue()) % 64, MVT::i64);
4535 def bfi_width_to_imms : SDNodeXForm<imm, [{
4536 return CurDAG->getTargetConstant(N->getZExtValue() - 1, MVT::i64);
4540 // The simpler patterns deal with cases where no AND mask is actually needed
4541 // (either all bits are used or the low 32 bits are used).
4542 let AddedComplexity = 10 in {
4544 def : Pat<(A64Bfi GPR64:$src, GPR64:$Rn, imm:$ImmR, imm:$ImmS),
4545 (BFIxxii GPR64:$src, GPR64:$Rn,
4546 (bfi64_lsb_to_immr (i64 imm:$ImmR)),
4547 (bfi_width_to_imms (i64 imm:$ImmS)))>;
4549 def : Pat<(A64Bfi GPR32:$src, GPR32:$Rn, imm:$ImmR, imm:$ImmS),
4550 (BFIwwii GPR32:$src, GPR32:$Rn,
4551 (bfi32_lsb_to_immr (i64 imm:$ImmR)),
4552 (bfi_width_to_imms (i64 imm:$ImmS)))>;
4555 def : Pat<(and (A64Bfi GPR64:$src, GPR64:$Rn, imm:$ImmR, imm:$ImmS),
4557 (SUBREG_TO_REG (i64 0),
4558 (BFIwwii (EXTRACT_SUBREG GPR64:$src, sub_32),
4559 (EXTRACT_SUBREG GPR64:$Rn, sub_32),
4560 (bfi32_lsb_to_immr (i64 imm:$ImmR)),
4561 (bfi_width_to_imms (i64 imm:$ImmS))),
4566 //===----------------------------------------------------------------------===//
4567 // Miscellaneous patterns
4568 //===----------------------------------------------------------------------===//
4570 // Truncation from 64 to 32-bits just involves renaming your register.
4571 def : Pat<(i32 (trunc (i64 GPR64:$val))), (EXTRACT_SUBREG GPR64:$val, sub_32)>;
4573 // Similarly, extension where we don't care about the high bits is
4575 def : Pat<(i64 (anyext (i32 GPR32:$val))),
4576 (INSERT_SUBREG (IMPLICIT_DEF), GPR32:$val, sub_32)>;
4578 // SELECT instructions providing f128 types need to be handled by a
4579 // pseudo-instruction since the eventual code will need to introduce basic
4580 // blocks and control flow.
4581 def F128CSEL : PseudoInst<(outs FPR128:$Rd),
4582 (ins FPR128:$Rn, FPR128:$Rm, cond_code_op:$Cond),
4583 [(set FPR128:$Rd, (simple_select (f128 FPR128:$Rn),
4586 let usesCustomInserter = 1;
4589 //===----------------------------------------------------------------------===//
4590 // Load/store patterns
4591 //===----------------------------------------------------------------------===//
4593 // There are lots of patterns here, because we need to allow at least three
4594 // parameters to vary independently.
4595 // 1. Instruction: "ldrb w9, [sp]", "ldrh w9, [sp]", ...
4596 // 2. LLVM source: zextloadi8, anyextloadi8, ...
4597 // 3. Address-generation: A64Wrapper, (add BASE, OFFSET), ...
4599 // The biggest problem turns out to be the address-generation variable. At the
4600 // point of instantiation we need to produce two DAGs, one for the pattern and
4601 // one for the instruction. Doing this at the lowest level of classes doesn't
4604 // Consider the simple uimm12 addressing mode, and the desire to match both (add
4605 // GPR64xsp:$Rn, uimm12:$Offset) and GPR64xsp:$Rn, particularly on the
4606 // instruction side. We'd need to insert either "GPR64xsp" and "uimm12" or
4607 // "GPR64xsp" and "0" into an unknown dag. !subst is not capable of this
4608 // operation, and PatFrags are for selection not output.
4610 // As a result, the address-generation patterns are the final
4611 // instantiations. However, we do still need to vary the operand for the address
4612 // further down (At the point we're deciding A64WrapperSmall, we don't know
4613 // the memory width of the operation).
4615 //===------------------------------
4616 // 1. Basic infrastructural defs
4617 //===------------------------------
4619 // First, some simple classes for !foreach and !subst to use:
4630 // You can't use !subst on an actual immediate, but you *can* use it on an
4631 // operand record that happens to match a single immediate. So we do.
4632 def imm_eq0 : ImmLeaf<i64, [{ return Imm == 0; }]>;
4633 def imm_eq1 : ImmLeaf<i64, [{ return Imm == 1; }]>;
4634 def imm_eq2 : ImmLeaf<i64, [{ return Imm == 2; }]>;
4635 def imm_eq3 : ImmLeaf<i64, [{ return Imm == 3; }]>;
4636 def imm_eq4 : ImmLeaf<i64, [{ return Imm == 4; }]>;
4638 // If the low bits of a pointer are known to be 0 then an "or" is just as good
4639 // as addition for computing an offset. This fragment forwards that check for
4641 def add_like_or : PatFrag<(ops node:$lhs, node:$rhs), (or node:$lhs, node:$rhs),
4643 return CurDAG->isBaseWithConstantOffset(SDValue(N, 0));
4646 // Load/store (unsigned immediate) operations with relocations against global
4647 // symbols (for lo12) are only valid if those symbols have correct alignment
4648 // (since the immediate offset is divided by the access scale, it can't have a
4651 // The guaranteed alignment is provided as part of the WrapperSmall
4652 // operation, and checked against one of these.
4653 def any_align : ImmLeaf<i32, [{ (void)Imm; return true; }]>;
4654 def min_align2 : ImmLeaf<i32, [{ return Imm >= 2; }]>;
4655 def min_align4 : ImmLeaf<i32, [{ return Imm >= 4; }]>;
4656 def min_align8 : ImmLeaf<i32, [{ return Imm >= 8; }]>;
4657 def min_align16 : ImmLeaf<i32, [{ return Imm >= 16; }]>;
4659 // "Normal" load/store instructions can be used on atomic operations, provided
4660 // the ordering parameter is at most "monotonic". Anything above that needs
4661 // special handling with acquire/release instructions.
4662 class simple_load<PatFrag base>
4663 : PatFrag<(ops node:$ptr), (base node:$ptr), [{
4664 return cast<AtomicSDNode>(N)->getOrdering() <= Monotonic;
4667 def atomic_load_simple_i8 : simple_load<atomic_load_8>;
4668 def atomic_load_simple_i16 : simple_load<atomic_load_16>;
4669 def atomic_load_simple_i32 : simple_load<atomic_load_32>;
4670 def atomic_load_simple_i64 : simple_load<atomic_load_64>;
4672 class simple_store<PatFrag base>
4673 : PatFrag<(ops node:$ptr, node:$val), (base node:$ptr, node:$val), [{
4674 return cast<AtomicSDNode>(N)->getOrdering() <= Monotonic;
4677 def atomic_store_simple_i8 : simple_store<atomic_store_8>;
4678 def atomic_store_simple_i16 : simple_store<atomic_store_16>;
4679 def atomic_store_simple_i32 : simple_store<atomic_store_32>;
4680 def atomic_store_simple_i64 : simple_store<atomic_store_64>;
4682 //===------------------------------
4683 // 2. UImm12 and SImm9
4684 //===------------------------------
4686 // These instructions have two operands providing the address so they can be
4687 // treated similarly for most purposes.
4689 //===------------------------------
4690 // 2.1 Base patterns covering extend/truncate semantics
4691 //===------------------------------
4693 // Atomic patterns can be shared between integer operations of all sizes, a
4694 // quick multiclass here allows reuse.
4695 multiclass ls_atomic_pats<Instruction LOAD, Instruction STORE, dag Base,
4696 dag Offset, dag address, RegisterClass TPR,
4698 def : Pat<(!cast<PatFrag>("atomic_load_simple_" # sty) address),
4699 (LOAD Base, Offset)>;
4701 def : Pat<(!cast<PatFrag>("atomic_store_simple_" # sty) address, TPR:$Rt),
4702 (STORE TPR:$Rt, Base, Offset)>;
4705 // Instructions accessing a memory chunk smaller than a register (or, in a
4706 // pinch, the same size) have a characteristic set of patterns they want to
4707 // match: extending loads and truncating stores. This class deals with the
4708 // sign-neutral version of those patterns.
4710 // It will be instantiated across multiple addressing-modes.
4711 multiclass ls_small_pats<Instruction LOAD, Instruction STORE,
4712 dag Base, dag Offset,
4713 dag address, ValueType sty>
4714 : ls_atomic_pats<LOAD, STORE, Base, Offset, address, GPR32, sty> {
4715 def : Pat<(!cast<SDNode>(zextload # sty) address), (LOAD Base, Offset)>;
4717 def : Pat<(!cast<SDNode>(extload # sty) address), (LOAD Base, Offset)>;
4719 // For zero-extension to 64-bits we have to tell LLVM that the whole 64-bit
4720 // register was actually set.
4721 def : Pat<(i64 (!cast<SDNode>(zextload # sty) address)),
4722 (SUBREG_TO_REG (i64 0), (LOAD Base, Offset), sub_32)>;
4724 def : Pat<(i64 (!cast<SDNode>(extload # sty) address)),
4725 (SUBREG_TO_REG (i64 0), (LOAD Base, Offset), sub_32)>;
4727 def : Pat<(!cast<SDNode>(truncstore # sty) GPR32:$Rt, address),
4728 (STORE GPR32:$Rt, Base, Offset)>;
4730 // For truncating store from 64-bits, we have to manually tell LLVM to
4731 // ignore the high bits of the x register.
4732 def : Pat<(!cast<SDNode>(truncstore # sty) GPR64:$Rt, address),
4733 (STORE (EXTRACT_SUBREG GPR64:$Rt, sub_32), Base, Offset)>;
4736 // Next come patterns for sign-extending loads.
4737 multiclass load_signed_pats<string T, string U, dag Base, dag Offset,
4738 dag address, ValueType sty> {
4739 def : Pat<(i32 (!cast<SDNode>("sextload" # sty) address)),
4740 (!cast<Instruction>("LDRS" # T # "w" # U) Base, Offset)>;
4742 def : Pat<(i64 (!cast<SDNode>("sextload" # sty) address)),
4743 (!cast<Instruction>("LDRS" # T # "x" # U) Base, Offset)>;
4747 // and finally "natural-width" loads and stores come next.
4748 multiclass ls_neutral_pats<Instruction LOAD, Instruction STORE, dag Base,
4749 dag Offset, dag address, RegisterClass TPR,
4751 def : Pat<(sty (load address)), (LOAD Base, Offset)>;
4752 def : Pat<(store (sty TPR:$Rt), address), (STORE TPR:$Rt, Base, Offset)>;
4755 // Integer operations also get atomic instructions to select for.
4756 multiclass ls_int_neutral_pats<Instruction LOAD, Instruction STORE, dag Base,
4757 dag Offset, dag address, RegisterClass TPR,
4759 : ls_neutral_pats<LOAD, STORE, Base, Offset, address, TPR, sty>,
4760 ls_atomic_pats<LOAD, STORE, Base, Offset, address, TPR, sty>;
4762 //===------------------------------
4763 // 2.2. Addressing-mode instantiations
4764 //===------------------------------
4766 multiclass uimm12_pats<dag address, dag Base, dag Offset> {
4767 defm : ls_small_pats<LS8_LDR, LS8_STR, Base,
4768 !foreach(decls.pattern, Offset,
4769 !subst(OFFSET, byte_uimm12, decls.pattern)),
4770 !foreach(decls.pattern, address,
4771 !subst(OFFSET, byte_uimm12,
4772 !subst(ALIGN, any_align, decls.pattern))),
4774 defm : ls_small_pats<LS16_LDR, LS16_STR, Base,
4775 !foreach(decls.pattern, Offset,
4776 !subst(OFFSET, hword_uimm12, decls.pattern)),
4777 !foreach(decls.pattern, address,
4778 !subst(OFFSET, hword_uimm12,
4779 !subst(ALIGN, min_align2, decls.pattern))),
4781 defm : ls_small_pats<LS32_LDR, LS32_STR, Base,
4782 !foreach(decls.pattern, Offset,
4783 !subst(OFFSET, word_uimm12, decls.pattern)),
4784 !foreach(decls.pattern, address,
4785 !subst(OFFSET, word_uimm12,
4786 !subst(ALIGN, min_align4, decls.pattern))),
4789 defm : ls_int_neutral_pats<LS32_LDR, LS32_STR, Base,
4790 !foreach(decls.pattern, Offset,
4791 !subst(OFFSET, word_uimm12, decls.pattern)),
4792 !foreach(decls.pattern, address,
4793 !subst(OFFSET, word_uimm12,
4794 !subst(ALIGN, min_align4, decls.pattern))),
4797 defm : ls_int_neutral_pats<LS64_LDR, LS64_STR, Base,
4798 !foreach(decls.pattern, Offset,
4799 !subst(OFFSET, dword_uimm12, decls.pattern)),
4800 !foreach(decls.pattern, address,
4801 !subst(OFFSET, dword_uimm12,
4802 !subst(ALIGN, min_align8, decls.pattern))),
4805 defm : ls_neutral_pats<LSFP16_LDR, LSFP16_STR, Base,
4806 !foreach(decls.pattern, Offset,
4807 !subst(OFFSET, hword_uimm12, decls.pattern)),
4808 !foreach(decls.pattern, address,
4809 !subst(OFFSET, hword_uimm12,
4810 !subst(ALIGN, min_align2, decls.pattern))),
4813 defm : ls_neutral_pats<LSFP32_LDR, LSFP32_STR, Base,
4814 !foreach(decls.pattern, Offset,
4815 !subst(OFFSET, word_uimm12, decls.pattern)),
4816 !foreach(decls.pattern, address,
4817 !subst(OFFSET, word_uimm12,
4818 !subst(ALIGN, min_align4, decls.pattern))),
4821 defm : ls_neutral_pats<LSFP64_LDR, LSFP64_STR, Base,
4822 !foreach(decls.pattern, Offset,
4823 !subst(OFFSET, dword_uimm12, decls.pattern)),
4824 !foreach(decls.pattern, address,
4825 !subst(OFFSET, dword_uimm12,
4826 !subst(ALIGN, min_align8, decls.pattern))),
4829 defm : ls_neutral_pats<LSFP128_LDR, LSFP128_STR, Base,
4830 !foreach(decls.pattern, Offset,
4831 !subst(OFFSET, qword_uimm12, decls.pattern)),
4832 !foreach(decls.pattern, address,
4833 !subst(OFFSET, qword_uimm12,
4834 !subst(ALIGN, min_align16, decls.pattern))),
4837 defm : load_signed_pats<"B", "", Base,
4838 !foreach(decls.pattern, Offset,
4839 !subst(OFFSET, byte_uimm12, decls.pattern)),
4840 !foreach(decls.pattern, address,
4841 !subst(OFFSET, byte_uimm12,
4842 !subst(ALIGN, any_align, decls.pattern))),
4845 defm : load_signed_pats<"H", "", Base,
4846 !foreach(decls.pattern, Offset,
4847 !subst(OFFSET, hword_uimm12, decls.pattern)),
4848 !foreach(decls.pattern, address,
4849 !subst(OFFSET, hword_uimm12,
4850 !subst(ALIGN, min_align2, decls.pattern))),
4853 def : Pat<(sextloadi32 !foreach(decls.pattern, address,
4854 !subst(OFFSET, word_uimm12,
4855 !subst(ALIGN, min_align4, decls.pattern)))),
4856 (LDRSWx Base, !foreach(decls.pattern, Offset,
4857 !subst(OFFSET, word_uimm12, decls.pattern)))>;
4860 // Straightforward patterns of last resort: a pointer with or without an
4861 // appropriate offset.
4862 defm : uimm12_pats<(i64 GPR64xsp:$Rn), (i64 GPR64xsp:$Rn), (i64 0)>;
4863 defm : uimm12_pats<(add GPR64xsp:$Rn, OFFSET:$UImm12),
4864 (i64 GPR64xsp:$Rn), (i64 OFFSET:$UImm12)>;
4866 // The offset could be hidden behind an "or", of course:
4867 defm : uimm12_pats<(add_like_or GPR64xsp:$Rn, OFFSET:$UImm12),
4868 (i64 GPR64xsp:$Rn), (i64 OFFSET:$UImm12)>;
4870 // Global addresses under the small-absolute model should use these
4871 // instructions. There are ELF relocations specifically for it.
4872 defm : uimm12_pats<(A64WrapperSmall tglobaladdr:$Hi, tglobaladdr:$Lo12, ALIGN),
4873 (ADRPxi tglobaladdr:$Hi), (i64 tglobaladdr:$Lo12)>;
4875 defm : uimm12_pats<(A64WrapperSmall tglobaltlsaddr:$Hi, tglobaltlsaddr:$Lo12,
4877 (ADRPxi tglobaltlsaddr:$Hi), (i64 tglobaltlsaddr:$Lo12)>;
4879 // External symbols that make it this far should also get standard relocations.
4880 defm : uimm12_pats<(A64WrapperSmall texternalsym:$Hi, texternalsym:$Lo12,
4882 (ADRPxi texternalsym:$Hi), (i64 texternalsym:$Lo12)>;
4884 defm : uimm12_pats<(A64WrapperSmall tconstpool:$Hi, tconstpool:$Lo12, ALIGN),
4885 (ADRPxi tconstpool:$Hi), (i64 tconstpool:$Lo12)>;
4887 // We also want to use uimm12 instructions for local variables at the moment.
4888 def tframeindex_XFORM : SDNodeXForm<frameindex, [{
4889 int FI = cast<FrameIndexSDNode>(N)->getIndex();
4890 return CurDAG->getTargetFrameIndex(FI, MVT::i64);
4893 defm : uimm12_pats<(i64 frameindex:$Rn),
4894 (tframeindex_XFORM tframeindex:$Rn), (i64 0)>;
4896 // These can be much simpler than uimm12 because we don't to change the operand
4897 // type (e.g. LDURB and LDURH take the same operands).
4898 multiclass simm9_pats<dag address, dag Base, dag Offset> {
4899 defm : ls_small_pats<LS8_LDUR, LS8_STUR, Base, Offset, address, i8>;
4900 defm : ls_small_pats<LS16_LDUR, LS16_STUR, Base, Offset, address, i16>;
4902 defm : ls_int_neutral_pats<LS32_LDUR, LS32_STUR, Base, Offset, address,
4904 defm : ls_int_neutral_pats<LS64_LDUR, LS64_STUR, Base, Offset, address,
4907 defm : ls_neutral_pats<LSFP16_LDUR, LSFP16_STUR, Base, Offset, address,
4909 defm : ls_neutral_pats<LSFP32_LDUR, LSFP32_STUR, Base, Offset, address,
4911 defm : ls_neutral_pats<LSFP64_LDUR, LSFP64_STUR, Base, Offset, address,
4913 defm : ls_neutral_pats<LSFP128_LDUR, LSFP128_STUR, Base, Offset, address,
4916 def : Pat<(i64 (zextloadi32 address)),
4917 (SUBREG_TO_REG (i64 0), (LS32_LDUR Base, Offset), sub_32)>;
4919 def : Pat<(truncstorei32 GPR64:$Rt, address),
4920 (LS32_STUR (EXTRACT_SUBREG GPR64:$Rt, sub_32), Base, Offset)>;
4922 defm : load_signed_pats<"B", "_U", Base, Offset, address, i8>;
4923 defm : load_signed_pats<"H", "_U", Base, Offset, address, i16>;
4924 def : Pat<(sextloadi32 address), (LDURSWx Base, Offset)>;
4927 defm : simm9_pats<(add GPR64xsp:$Rn, simm9:$SImm9),
4928 (i64 GPR64xsp:$Rn), (SDXF_simm9 simm9:$SImm9)>;
4930 defm : simm9_pats<(add_like_or GPR64xsp:$Rn, simm9:$SImm9),
4931 (i64 GPR64xsp:$Rn), (SDXF_simm9 simm9:$SImm9)>;
4934 //===------------------------------
4935 // 3. Register offset patterns
4936 //===------------------------------
4938 // Atomic patterns can be shared between integer operations of all sizes, a
4939 // quick multiclass here allows reuse.
4940 multiclass ro_atomic_pats<Instruction LOAD, Instruction STORE, dag Base,
4941 dag Offset, dag Extend, dag address,
4942 RegisterClass TPR, ValueType sty> {
4943 def : Pat<(!cast<PatFrag>("atomic_load_simple_" # sty) address),
4944 (LOAD Base, Offset, Extend)>;
4946 def : Pat<(!cast<PatFrag>("atomic_store_simple_" # sty) address, TPR:$Rt),
4947 (STORE TPR:$Rt, Base, Offset, Extend)>;
4950 // The register offset instructions take three operands giving the instruction,
4951 // and have an annoying split between instructions where Rm is 32-bit and
4952 // 64-bit. So we need a special hierarchy to describe them. Other than that the
4953 // same operations should be supported as for simm9 and uimm12 addressing.
4955 multiclass ro_small_pats<Instruction LOAD, Instruction STORE,
4956 dag Base, dag Offset, dag Extend,
4957 dag address, ValueType sty>
4958 : ro_atomic_pats<LOAD, STORE, Base, Offset, Extend, address, GPR32, sty> {
4959 def : Pat<(!cast<SDNode>(zextload # sty) address),
4960 (LOAD Base, Offset, Extend)>;
4962 def : Pat<(!cast<SDNode>(extload # sty) address),
4963 (LOAD Base, Offset, Extend)>;
4965 // For zero-extension to 64-bits we have to tell LLVM that the whole 64-bit
4966 // register was actually set.
4967 def : Pat<(i64 (!cast<SDNode>(zextload # sty) address)),
4968 (SUBREG_TO_REG (i64 0), (LOAD Base, Offset, Extend), sub_32)>;
4970 def : Pat<(i64 (!cast<SDNode>(extload # sty) address)),
4971 (SUBREG_TO_REG (i64 0), (LOAD Base, Offset, Extend), sub_32)>;
4973 def : Pat<(!cast<SDNode>(truncstore # sty) GPR32:$Rt, address),
4974 (STORE GPR32:$Rt, Base, Offset, Extend)>;
4976 // For truncating store from 64-bits, we have to manually tell LLVM to
4977 // ignore the high bits of the x register.
4978 def : Pat<(!cast<SDNode>(truncstore # sty) GPR64:$Rt, address),
4979 (STORE (EXTRACT_SUBREG GPR64:$Rt, sub_32), Base, Offset, Extend)>;
4983 // Next come patterns for sign-extending loads.
4984 multiclass ro_signed_pats<string T, string Rm, dag Base, dag Offset, dag Extend,
4985 dag address, ValueType sty> {
4986 def : Pat<(i32 (!cast<SDNode>("sextload" # sty) address)),
4987 (!cast<Instruction>("LDRS" # T # "w_" # Rm # "_RegOffset")
4988 Base, Offset, Extend)>;
4990 def : Pat<(i64 (!cast<SDNode>("sextload" # sty) address)),
4991 (!cast<Instruction>("LDRS" # T # "x_" # Rm # "_RegOffset")
4992 Base, Offset, Extend)>;
4995 // and finally "natural-width" loads and stores come next.
4996 multiclass ro_neutral_pats<Instruction LOAD, Instruction STORE,
4997 dag Base, dag Offset, dag Extend, dag address,
4998 RegisterClass TPR, ValueType sty> {
4999 def : Pat<(sty (load address)), (LOAD Base, Offset, Extend)>;
5000 def : Pat<(store (sty TPR:$Rt), address),
5001 (STORE TPR:$Rt, Base, Offset, Extend)>;
5004 multiclass ro_int_neutral_pats<Instruction LOAD, Instruction STORE,
5005 dag Base, dag Offset, dag Extend, dag address,
5006 RegisterClass TPR, ValueType sty>
5007 : ro_neutral_pats<LOAD, STORE, Base, Offset, Extend, address, TPR, sty>,
5008 ro_atomic_pats<LOAD, STORE, Base, Offset, Extend, address, TPR, sty>;
5010 multiclass regoff_pats<string Rm, dag address, dag Base, dag Offset,
5012 defm : ro_small_pats<!cast<Instruction>("LS8_" # Rm # "_RegOffset_LDR"),
5013 !cast<Instruction>("LS8_" # Rm # "_RegOffset_STR"),
5014 Base, Offset, Extend,
5015 !foreach(decls.pattern, address,
5016 !subst(SHIFT, imm_eq0, decls.pattern)),
5018 defm : ro_small_pats<!cast<Instruction>("LS16_" # Rm # "_RegOffset_LDR"),
5019 !cast<Instruction>("LS16_" # Rm # "_RegOffset_STR"),
5020 Base, Offset, Extend,
5021 !foreach(decls.pattern, address,
5022 !subst(SHIFT, imm_eq1, decls.pattern)),
5024 defm : ro_small_pats<!cast<Instruction>("LS32_" # Rm # "_RegOffset_LDR"),
5025 !cast<Instruction>("LS32_" # Rm # "_RegOffset_STR"),
5026 Base, Offset, Extend,
5027 !foreach(decls.pattern, address,
5028 !subst(SHIFT, imm_eq2, decls.pattern)),
5031 defm : ro_int_neutral_pats<
5032 !cast<Instruction>("LS32_" # Rm # "_RegOffset_LDR"),
5033 !cast<Instruction>("LS32_" # Rm # "_RegOffset_STR"),
5034 Base, Offset, Extend,
5035 !foreach(decls.pattern, address,
5036 !subst(SHIFT, imm_eq2, decls.pattern)),
5039 defm : ro_int_neutral_pats<
5040 !cast<Instruction>("LS64_" # Rm # "_RegOffset_LDR"),
5041 !cast<Instruction>("LS64_" # Rm # "_RegOffset_STR"),
5042 Base, Offset, Extend,
5043 !foreach(decls.pattern, address,
5044 !subst(SHIFT, imm_eq3, decls.pattern)),
5047 defm : ro_neutral_pats<!cast<Instruction>("LSFP16_" # Rm # "_RegOffset_LDR"),
5048 !cast<Instruction>("LSFP16_" # Rm # "_RegOffset_STR"),
5049 Base, Offset, Extend,
5050 !foreach(decls.pattern, address,
5051 !subst(SHIFT, imm_eq1, decls.pattern)),
5054 defm : ro_neutral_pats<!cast<Instruction>("LSFP32_" # Rm # "_RegOffset_LDR"),
5055 !cast<Instruction>("LSFP32_" # Rm # "_RegOffset_STR"),
5056 Base, Offset, Extend,
5057 !foreach(decls.pattern, address,
5058 !subst(SHIFT, imm_eq2, decls.pattern)),
5061 defm : ro_neutral_pats<!cast<Instruction>("LSFP64_" # Rm # "_RegOffset_LDR"),
5062 !cast<Instruction>("LSFP64_" # Rm # "_RegOffset_STR"),
5063 Base, Offset, Extend,
5064 !foreach(decls.pattern, address,
5065 !subst(SHIFT, imm_eq3, decls.pattern)),
5068 defm : ro_neutral_pats<!cast<Instruction>("LSFP128_" # Rm # "_RegOffset_LDR"),
5069 !cast<Instruction>("LSFP128_" # Rm # "_RegOffset_STR"),
5070 Base, Offset, Extend,
5071 !foreach(decls.pattern, address,
5072 !subst(SHIFT, imm_eq4, decls.pattern)),
5075 defm : ro_signed_pats<"B", Rm, Base, Offset, Extend,
5076 !foreach(decls.pattern, address,
5077 !subst(SHIFT, imm_eq0, decls.pattern)),
5080 defm : ro_signed_pats<"H", Rm, Base, Offset, Extend,
5081 !foreach(decls.pattern, address,
5082 !subst(SHIFT, imm_eq1, decls.pattern)),
5085 def : Pat<(sextloadi32 !foreach(decls.pattern, address,
5086 !subst(SHIFT, imm_eq2, decls.pattern))),
5087 (!cast<Instruction>("LDRSWx_" # Rm # "_RegOffset")
5088 Base, Offset, Extend)>;
5092 // Finally we're in a position to tell LLVM exactly what addresses are reachable
5093 // using register-offset instructions. Essentially a base plus a possibly
5094 // extended, possibly shifted (by access size) offset.
5096 defm : regoff_pats<"Wm", (add GPR64xsp:$Rn, (sext GPR32:$Rm)),
5097 (i64 GPR64xsp:$Rn), (i32 GPR32:$Rm), (i64 6)>;
5099 defm : regoff_pats<"Wm", (add GPR64xsp:$Rn, (shl (sext GPR32:$Rm), SHIFT)),
5100 (i64 GPR64xsp:$Rn), (i32 GPR32:$Rm), (i64 7)>;
5102 defm : regoff_pats<"Wm", (add GPR64xsp:$Rn, (zext GPR32:$Rm)),
5103 (i64 GPR64xsp:$Rn), (i32 GPR32:$Rm), (i64 2)>;
5105 defm : regoff_pats<"Wm", (add GPR64xsp:$Rn, (shl (zext GPR32:$Rm), SHIFT)),
5106 (i64 GPR64xsp:$Rn), (i32 GPR32:$Rm), (i64 3)>;
5108 defm : regoff_pats<"Xm", (add GPR64xsp:$Rn, GPR64:$Rm),
5109 (i64 GPR64xsp:$Rn), (i64 GPR64:$Rm), (i64 2)>;
5111 defm : regoff_pats<"Xm", (add GPR64xsp:$Rn, (shl GPR64:$Rm, SHIFT)),
5112 (i64 GPR64xsp:$Rn), (i64 GPR64:$Rm), (i64 3)>;