1 //===-- ARMInstrThumb.td - Thumb support for ARM -----------*- 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 Thumb instruction set.
12 //===----------------------------------------------------------------------===//
14 //===----------------------------------------------------------------------===//
15 // Thumb specific DAG Nodes.
18 def ARMtcall : SDNode<"ARMISD::tCALL", SDT_ARMcall,
19 [SDNPHasChain, SDNPOptInGlue, SDNPOutGlue,
22 def imm_sr_XFORM: SDNodeXForm<imm, [{
23 unsigned Imm = N->getZExtValue();
24 return CurDAG->getTargetConstant((Imm == 32 ? 0 : Imm), MVT::i32);
26 def ThumbSRImmAsmOperand: AsmOperandClass { let Name = "ImmThumbSR"; }
27 def imm_sr : Operand<i32>, PatLeaf<(imm), [{
28 uint64_t Imm = N->getZExtValue();
29 return Imm > 0 && Imm <= 32;
31 let PrintMethod = "printThumbSRImm";
32 let ParserMatchClass = ThumbSRImmAsmOperand;
35 def imm_comp_XFORM : SDNodeXForm<imm, [{
36 return CurDAG->getTargetConstant(~((uint32_t)N->getZExtValue()), MVT::i32);
39 def imm0_7_neg : PatLeaf<(i32 imm), [{
40 return (uint32_t)-N->getZExtValue() < 8;
43 def imm0_255_comp : PatLeaf<(i32 imm), [{
44 return ~((uint32_t)N->getZExtValue()) < 256;
47 def imm8_255 : ImmLeaf<i32, [{
48 return Imm >= 8 && Imm < 256;
50 def imm8_255_neg : PatLeaf<(i32 imm), [{
51 unsigned Val = -N->getZExtValue();
52 return Val >= 8 && Val < 256;
55 // Break imm's up into two pieces: an immediate + a left shift. This uses
56 // thumb_immshifted to match and thumb_immshifted_val and thumb_immshifted_shamt
57 // to get the val/shift pieces.
58 def thumb_immshifted : PatLeaf<(imm), [{
59 return ARM_AM::isThumbImmShiftedVal((unsigned)N->getZExtValue());
62 def thumb_immshifted_val : SDNodeXForm<imm, [{
63 unsigned V = ARM_AM::getThumbImmNonShiftedVal((unsigned)N->getZExtValue());
64 return CurDAG->getTargetConstant(V, MVT::i32);
67 def thumb_immshifted_shamt : SDNodeXForm<imm, [{
68 unsigned V = ARM_AM::getThumbImmValShift((unsigned)N->getZExtValue());
69 return CurDAG->getTargetConstant(V, MVT::i32);
72 // Scaled 4 immediate.
73 def t_imm0_1020s4_asmoperand: AsmOperandClass { let Name = "Imm0_1020s4"; }
74 def t_imm0_1020s4 : Operand<i32> {
75 let PrintMethod = "printThumbS4ImmOperand";
76 let ParserMatchClass = t_imm0_1020s4_asmoperand;
77 let OperandType = "OPERAND_IMMEDIATE";
80 def t_imm0_508s4_asmoperand: AsmOperandClass { let Name = "Imm0_508s4"; }
81 def t_imm0_508s4 : Operand<i32> {
82 let PrintMethod = "printThumbS4ImmOperand";
83 let ParserMatchClass = t_imm0_508s4_asmoperand;
84 let OperandType = "OPERAND_IMMEDIATE";
86 // Alias use only, so no printer is necessary.
87 def t_imm0_508s4_neg_asmoperand: AsmOperandClass { let Name = "Imm0_508s4Neg"; }
88 def t_imm0_508s4_neg : Operand<i32> {
89 let ParserMatchClass = t_imm0_508s4_neg_asmoperand;
90 let OperandType = "OPERAND_IMMEDIATE";
93 // Define Thumb specific addressing modes.
95 // unsigned 8-bit, 2-scaled memory offset
96 class OperandUnsignedOffset_b8s2 : AsmOperandClass {
97 let Name = "UnsignedOffset_b8s2";
98 let PredicateMethod = "isUnsignedOffset<8, 2>";
101 def UnsignedOffset_b8s2 : OperandUnsignedOffset_b8s2;
103 // thumb style PC relative operand. signed, 8 bits magnitude,
104 // two bits shift. can be represented as either [pc, #imm], #imm,
105 // or relocatable expression...
106 def ThumbMemPC : AsmOperandClass {
107 let Name = "ThumbMemPC";
110 let OperandType = "OPERAND_PCREL" in {
111 def t_brtarget : Operand<OtherVT> {
112 let EncoderMethod = "getThumbBRTargetOpValue";
113 let DecoderMethod = "DecodeThumbBROperand";
116 // ADR instruction labels.
117 def t_adrlabel : Operand<i32> {
118 let EncoderMethod = "getThumbAdrLabelOpValue";
119 let PrintMethod = "printAdrLabelOperand<2>";
120 let ParserMatchClass = UnsignedOffset_b8s2;
123 def t_bcctarget : Operand<i32> {
124 let EncoderMethod = "getThumbBCCTargetOpValue";
125 let DecoderMethod = "DecodeThumbBCCTargetOperand";
128 def t_cbtarget : Operand<i32> {
129 let EncoderMethod = "getThumbCBTargetOpValue";
130 let DecoderMethod = "DecodeThumbCmpBROperand";
133 def t_bltarget : Operand<i32> {
134 let EncoderMethod = "getThumbBLTargetOpValue";
135 let DecoderMethod = "DecodeThumbBLTargetOperand";
138 def t_blxtarget : Operand<i32> {
139 let EncoderMethod = "getThumbBLXTargetOpValue";
140 let DecoderMethod = "DecodeThumbBLXOffset";
143 // t_addrmode_pc := <label> => pc + imm8 * 4
145 def t_addrmode_pc : Operand<i32> {
146 let EncoderMethod = "getAddrModePCOpValue";
147 let DecoderMethod = "DecodeThumbAddrModePC";
148 let PrintMethod = "printThumbLdrLabelOperand";
149 let ParserMatchClass = ThumbMemPC;
153 // t_addrmode_rr := reg + reg
155 def t_addrmode_rr_asm_operand : AsmOperandClass { let Name = "MemThumbRR"; }
156 def t_addrmode_rr : Operand<i32>,
157 ComplexPattern<i32, 2, "SelectThumbAddrModeRR", []> {
158 let EncoderMethod = "getThumbAddrModeRegRegOpValue";
159 let PrintMethod = "printThumbAddrModeRROperand";
160 let DecoderMethod = "DecodeThumbAddrModeRR";
161 let ParserMatchClass = t_addrmode_rr_asm_operand;
162 let MIOperandInfo = (ops tGPR:$base, tGPR:$offsreg);
165 // t_addrmode_rrs := reg + reg
167 // We use separate scaled versions because the Select* functions need
168 // to explicitly check for a matching constant and return false here so that
169 // the reg+imm forms will match instead. This is a horrible way to do that,
170 // as it forces tight coupling between the methods, but it's how selectiondag
172 def t_addrmode_rrs1 : Operand<i32>,
173 ComplexPattern<i32, 2, "SelectThumbAddrModeRI5S1", []> {
174 let EncoderMethod = "getThumbAddrModeRegRegOpValue";
175 let PrintMethod = "printThumbAddrModeRROperand";
176 let DecoderMethod = "DecodeThumbAddrModeRR";
177 let ParserMatchClass = t_addrmode_rr_asm_operand;
178 let MIOperandInfo = (ops tGPR:$base, tGPR:$offsreg);
180 def t_addrmode_rrs2 : Operand<i32>,
181 ComplexPattern<i32, 2, "SelectThumbAddrModeRI5S2", []> {
182 let EncoderMethod = "getThumbAddrModeRegRegOpValue";
183 let DecoderMethod = "DecodeThumbAddrModeRR";
184 let PrintMethod = "printThumbAddrModeRROperand";
185 let ParserMatchClass = t_addrmode_rr_asm_operand;
186 let MIOperandInfo = (ops tGPR:$base, tGPR:$offsreg);
188 def t_addrmode_rrs4 : Operand<i32>,
189 ComplexPattern<i32, 2, "SelectThumbAddrModeRI5S4", []> {
190 let EncoderMethod = "getThumbAddrModeRegRegOpValue";
191 let DecoderMethod = "DecodeThumbAddrModeRR";
192 let PrintMethod = "printThumbAddrModeRROperand";
193 let ParserMatchClass = t_addrmode_rr_asm_operand;
194 let MIOperandInfo = (ops tGPR:$base, tGPR:$offsreg);
197 // t_addrmode_is4 := reg + imm5 * 4
199 def t_addrmode_is4_asm_operand : AsmOperandClass { let Name = "MemThumbRIs4"; }
200 def t_addrmode_is4 : Operand<i32>,
201 ComplexPattern<i32, 2, "SelectThumbAddrModeImm5S4", []> {
202 let EncoderMethod = "getAddrModeISOpValue";
203 let DecoderMethod = "DecodeThumbAddrModeIS";
204 let PrintMethod = "printThumbAddrModeImm5S4Operand";
205 let ParserMatchClass = t_addrmode_is4_asm_operand;
206 let MIOperandInfo = (ops tGPR:$base, i32imm:$offsimm);
209 // t_addrmode_is2 := reg + imm5 * 2
211 def t_addrmode_is2_asm_operand : AsmOperandClass { let Name = "MemThumbRIs2"; }
212 def t_addrmode_is2 : Operand<i32>,
213 ComplexPattern<i32, 2, "SelectThumbAddrModeImm5S2", []> {
214 let EncoderMethod = "getAddrModeISOpValue";
215 let DecoderMethod = "DecodeThumbAddrModeIS";
216 let PrintMethod = "printThumbAddrModeImm5S2Operand";
217 let ParserMatchClass = t_addrmode_is2_asm_operand;
218 let MIOperandInfo = (ops tGPR:$base, i32imm:$offsimm);
221 // t_addrmode_is1 := reg + imm5
223 def t_addrmode_is1_asm_operand : AsmOperandClass { let Name = "MemThumbRIs1"; }
224 def t_addrmode_is1 : Operand<i32>,
225 ComplexPattern<i32, 2, "SelectThumbAddrModeImm5S1", []> {
226 let EncoderMethod = "getAddrModeISOpValue";
227 let DecoderMethod = "DecodeThumbAddrModeIS";
228 let PrintMethod = "printThumbAddrModeImm5S1Operand";
229 let ParserMatchClass = t_addrmode_is1_asm_operand;
230 let MIOperandInfo = (ops tGPR:$base, i32imm:$offsimm);
233 // t_addrmode_sp := sp + imm8 * 4
235 // FIXME: This really shouldn't have an explicit SP operand at all. It should
236 // be implicit, just like in the instruction encoding itself.
237 def t_addrmode_sp_asm_operand : AsmOperandClass { let Name = "MemThumbSPI"; }
238 def t_addrmode_sp : Operand<i32>,
239 ComplexPattern<i32, 2, "SelectThumbAddrModeSP", []> {
240 let EncoderMethod = "getAddrModeThumbSPOpValue";
241 let DecoderMethod = "DecodeThumbAddrModeSP";
242 let PrintMethod = "printThumbAddrModeSPOperand";
243 let ParserMatchClass = t_addrmode_sp_asm_operand;
244 let MIOperandInfo = (ops GPR:$base, i32imm:$offsimm);
247 //===----------------------------------------------------------------------===//
248 // Miscellaneous Instructions.
251 // FIXME: Marking these as hasSideEffects is necessary to prevent machine DCE
252 // from removing one half of the matched pairs. That breaks PEI, which assumes
253 // these will always be in pairs, and asserts if it finds otherwise. Better way?
254 let Defs = [SP], Uses = [SP], hasSideEffects = 1 in {
255 def tADJCALLSTACKUP :
256 PseudoInst<(outs), (ins i32imm:$amt1, i32imm:$amt2), NoItinerary,
257 [(ARMcallseq_end imm:$amt1, imm:$amt2)]>,
258 Requires<[IsThumb, IsThumb1Only]>;
260 def tADJCALLSTACKDOWN :
261 PseudoInst<(outs), (ins i32imm:$amt), NoItinerary,
262 [(ARMcallseq_start imm:$amt)]>,
263 Requires<[IsThumb, IsThumb1Only]>;
266 class T1SystemEncoding<bits<8> opc>
267 : T1Encoding<0b101111> {
268 let Inst{9-8} = 0b11;
272 def tHINT : T1pI<(outs), (ins imm0_15:$imm), NoItinerary, "hint", "\t$imm", []>,
273 T1SystemEncoding<0x00>,
274 Requires<[IsThumb, HasV6M]> {
279 class tHintAlias<string Asm, dag Result> : tInstAlias<Asm, Result> {
280 let Predicates = [IsThumb, HasV6M];
283 def : tHintAlias<"nop$p", (tHINT 0, pred:$p)>; // A8.6.110
284 def : tHintAlias<"yield$p", (tHINT 1, pred:$p)>; // A8.6.410
285 def : tHintAlias<"wfe$p", (tHINT 2, pred:$p)>; // A8.6.408
286 def : tHintAlias<"wfi$p", (tHINT 3, pred:$p)>; // A8.6.409
287 def : tHintAlias<"sev$p", (tHINT 4, pred:$p)>; // A8.6.157
288 def : tInstAlias<"sevl$p", (tHINT 5, pred:$p)> {
289 let Predicates = [IsThumb2, HasV8];
291 def : T2Pat<(int_arm_sevl), (tHINT 5)>;
293 // The imm operand $val can be used by a debugger to store more information
294 // about the breakpoint.
295 def tBKPT : T1I<(outs), (ins imm0_255:$val), NoItinerary, "bkpt\t$val",
297 T1Encoding<0b101111> {
298 let Inst{9-8} = 0b10;
303 // default immediate for breakpoint mnemonic
304 def : InstAlias<"bkpt", (tBKPT 0)>, Requires<[IsThumb]>;
306 def tHLT : T1I<(outs), (ins imm0_63:$val), NoItinerary, "hlt\t$val",
307 []>, T1Encoding<0b101110>, Requires<[IsThumb, HasV8]> {
308 let Inst{9-6} = 0b1010;
313 def tSETEND : T1I<(outs), (ins setend_op:$end), NoItinerary, "setend\t$end",
314 []>, T1Encoding<0b101101>, Deprecated<HasV8Ops> {
317 let Inst{9-5} = 0b10010;
320 let Inst{2-0} = 0b000;
323 // Change Processor State is a system instruction -- for disassembly only.
324 def tCPS : T1I<(outs), (ins imod_op:$imod, iflags_op:$iflags),
325 NoItinerary, "cps$imod $iflags", []>,
333 let Inst{2-0} = iflags;
334 let DecoderMethod = "DecodeThumbCPS";
337 // For both thumb1 and thumb2.
338 let isNotDuplicable = 1, isCodeGenOnly = 1 in
339 def tPICADD : TIt<(outs GPR:$dst), (ins GPR:$lhs, pclabel:$cp), IIC_iALUr, "",
340 [(set GPR:$dst, (ARMpic_add GPR:$lhs, imm:$cp))]>,
341 T1Special<{0,0,?,?}>, Sched<[WriteALU]> {
344 let Inst{6-3} = 0b1111; // Rm = pc
348 // ADD <Rd>, sp, #<imm8>
349 // FIXME: This should not be marked as having side effects, and it should be
350 // rematerializable. Clearing the side effect bit causes miscompilations,
351 // probably because the instruction can be moved around.
352 def tADDrSPi : T1pI<(outs tGPR:$dst), (ins GPRsp:$sp, t_imm0_1020s4:$imm),
353 IIC_iALUi, "add", "\t$dst, $sp, $imm", []>,
354 T1Encoding<{1,0,1,0,1,?}>, Sched<[WriteALU]> {
358 let Inst{10-8} = dst;
360 let DecoderMethod = "DecodeThumbAddSpecialReg";
363 // ADD sp, sp, #<imm7>
364 def tADDspi : T1pIt<(outs GPRsp:$Rdn), (ins GPRsp:$Rn, t_imm0_508s4:$imm),
365 IIC_iALUi, "add", "\t$Rdn, $imm", []>,
366 T1Misc<{0,0,0,0,0,?,?}>, Sched<[WriteALU]> {
370 let DecoderMethod = "DecodeThumbAddSPImm";
373 // SUB sp, sp, #<imm7>
374 // FIXME: The encoding and the ASM string don't match up.
375 def tSUBspi : T1pIt<(outs GPRsp:$Rdn), (ins GPRsp:$Rn, t_imm0_508s4:$imm),
376 IIC_iALUi, "sub", "\t$Rdn, $imm", []>,
377 T1Misc<{0,0,0,0,1,?,?}>, Sched<[WriteALU]> {
381 let DecoderMethod = "DecodeThumbAddSPImm";
384 def : tInstAlias<"add${p} sp, $imm",
385 (tSUBspi SP, t_imm0_508s4_neg:$imm, pred:$p)>;
386 def : tInstAlias<"add${p} sp, sp, $imm",
387 (tSUBspi SP, t_imm0_508s4_neg:$imm, pred:$p)>;
389 // Can optionally specify SP as a three operand instruction.
390 def : tInstAlias<"add${p} sp, sp, $imm",
391 (tADDspi SP, t_imm0_508s4:$imm, pred:$p)>;
392 def : tInstAlias<"sub${p} sp, sp, $imm",
393 (tSUBspi SP, t_imm0_508s4:$imm, pred:$p)>;
396 def tADDrSP : T1pI<(outs GPR:$Rdn), (ins GPRsp:$sp, GPR:$Rn), IIC_iALUr,
397 "add", "\t$Rdn, $sp, $Rn", []>,
398 T1Special<{0,0,?,?}>, Sched<[WriteALU]> {
399 // A8.6.9 Encoding T1
401 let Inst{7} = Rdn{3};
402 let Inst{6-3} = 0b1101;
403 let Inst{2-0} = Rdn{2-0};
404 let DecoderMethod = "DecodeThumbAddSPReg";
408 def tADDspr : T1pIt<(outs GPRsp:$Rdn), (ins GPRsp:$Rn, GPR:$Rm), IIC_iALUr,
409 "add", "\t$Rdn, $Rm", []>,
410 T1Special<{0,0,?,?}>, Sched<[WriteALU]> {
411 // A8.6.9 Encoding T2
415 let Inst{2-0} = 0b101;
416 let DecoderMethod = "DecodeThumbAddSPReg";
419 //===----------------------------------------------------------------------===//
420 // Control Flow Instructions.
424 let isBranch = 1, isTerminator = 1, isBarrier = 1, isIndirectBranch = 1 in {
425 def tBX : TI<(outs), (ins GPR:$Rm, pred:$p), IIC_Br, "bx${p}\t$Rm", []>,
426 T1Special<{1,1,0,?}>, Sched<[WriteBr]> {
430 let Inst{2-0} = 0b000;
431 let Unpredictable{2-0} = 0b111;
435 let isReturn = 1, isTerminator = 1, isBarrier = 1 in {
436 def tBX_RET : tPseudoExpand<(outs), (ins pred:$p), 2, IIC_Br,
437 [(ARMretflag)], (tBX LR, pred:$p)>, Sched<[WriteBr]>;
439 // Alternative return instruction used by vararg functions.
440 def tBX_RET_vararg : tPseudoExpand<(outs), (ins tGPR:$Rm, pred:$p),
442 (tBX GPR:$Rm, pred:$p)>, Sched<[WriteBr]>;
445 // All calls clobber the non-callee saved registers. SP is marked as a use to
446 // prevent stack-pointer assignments that appear immediately before calls from
447 // potentially appearing dead.
449 Defs = [LR], Uses = [SP] in {
450 // Also used for Thumb2
451 def tBL : TIx2<0b11110, 0b11, 1,
452 (outs), (ins pred:$p, t_bltarget:$func), IIC_Br,
454 [(ARMtcall tglobaladdr:$func)]>,
455 Requires<[IsThumb]>, Sched<[WriteBrL]> {
457 let Inst{26} = func{23};
458 let Inst{25-16} = func{20-11};
459 let Inst{13} = func{22};
460 let Inst{11} = func{21};
461 let Inst{10-0} = func{10-0};
464 // ARMv5T and above, also used for Thumb2
465 def tBLXi : TIx2<0b11110, 0b11, 0,
466 (outs), (ins pred:$p, t_blxtarget:$func), IIC_Br,
468 [(ARMcall tglobaladdr:$func)]>,
469 Requires<[IsThumb, HasV5T]>, Sched<[WriteBrL]> {
471 let Inst{26} = func{23};
472 let Inst{25-16} = func{20-11};
473 let Inst{13} = func{22};
474 let Inst{11} = func{21};
475 let Inst{10-1} = func{10-1};
476 let Inst{0} = 0; // func{0} is assumed zero
479 // Also used for Thumb2
480 def tBLXr : TI<(outs), (ins pred:$p, GPR:$func), IIC_Br,
482 [(ARMtcall GPR:$func)]>,
483 Requires<[IsThumb, HasV5T]>,
484 T1Special<{1,1,1,?}>, Sched<[WriteBrL]> { // A6.2.3 & A8.6.24;
486 let Inst{6-3} = func;
487 let Inst{2-0} = 0b000;
491 def tBX_CALL : tPseudoInst<(outs), (ins tGPR:$func),
493 [(ARMcall_nolink tGPR:$func)]>,
494 Requires<[IsThumb, IsThumb1Only]>, Sched<[WriteBr]>;
497 let isBranch = 1, isTerminator = 1, isBarrier = 1 in {
498 let isPredicable = 1 in
499 def tB : T1pI<(outs), (ins t_brtarget:$target), IIC_Br,
500 "b", "\t$target", [(br bb:$target)]>,
501 T1Encoding<{1,1,1,0,0,?}>, Sched<[WriteBr]> {
503 let Inst{10-0} = target;
504 let AsmMatchConverter = "cvtThumbBranches";
508 // Just a pseudo for a tBL instruction. Needed to let regalloc know about
509 // the clobber of LR.
511 def tBfar : tPseudoExpand<(outs), (ins t_bltarget:$target, pred:$p),
512 4, IIC_Br, [], (tBL pred:$p, t_bltarget:$target)>,
515 def tBR_JTr : tPseudoInst<(outs),
516 (ins tGPR:$target, i32imm:$jt, i32imm:$id),
518 [(ARMbrjt tGPR:$target, tjumptable:$jt, imm:$id)]>,
519 Sched<[WriteBrTbl]> {
520 list<Predicate> Predicates = [IsThumb, IsThumb1Only];
524 // FIXME: should be able to write a pattern for ARMBrcond, but can't use
525 // a two-value operand where a dag node expects two operands. :(
526 let isBranch = 1, isTerminator = 1 in
527 def tBcc : T1I<(outs), (ins t_bcctarget:$target, pred:$p), IIC_Br,
529 [/*(ARMbrcond bb:$target, imm:$cc)*/]>,
530 T1BranchCond<{1,1,0,1}>, Sched<[WriteBr]> {
534 let Inst{7-0} = target;
535 let AsmMatchConverter = "cvtThumbBranches";
540 let isCall = 1, isTerminator = 1, isReturn = 1, isBarrier = 1 in {
543 def tTAILJMPr : tPseudoExpand<(outs), (ins tcGPR:$dst),
545 (tBX GPR:$dst, (ops 14, zero_reg))>,
546 Requires<[IsThumb]>, Sched<[WriteBr]>;
548 // tTAILJMPd: MachO version uses a Thumb2 branch (no Thumb1 tail calls
549 // on MachO), so it's in ARMInstrThumb2.td.
550 // Non-MachO version:
552 def tTAILJMPdND : tPseudoExpand<(outs),
553 (ins t_brtarget:$dst, pred:$p),
555 (tB t_brtarget:$dst, pred:$p)>,
556 Requires<[IsThumb, IsNotMachO]>, Sched<[WriteBr]>;
561 // A8.6.218 Supervisor Call (Software Interrupt)
562 // A8.6.16 B: Encoding T1
563 // If Inst{11-8} == 0b1111 then SEE SVC
564 let isCall = 1, Uses = [SP] in
565 def tSVC : T1pI<(outs), (ins imm0_255:$imm), IIC_Br,
566 "svc", "\t$imm", []>, Encoding16, Sched<[WriteBr]> {
568 let Inst{15-12} = 0b1101;
569 let Inst{11-8} = 0b1111;
573 // The assembler uses 0xDEFE for a trap instruction.
574 let isBarrier = 1, isTerminator = 1 in
575 def tTRAP : TI<(outs), (ins), IIC_Br,
576 "trap", [(trap)]>, Encoding16, Sched<[WriteBr]> {
580 //===----------------------------------------------------------------------===//
581 // Load Store Instructions.
584 // Loads: reg/reg and reg/imm5
585 let canFoldAsLoad = 1, isReMaterializable = 1 in
586 multiclass thumb_ld_rr_ri_enc<bits<3> reg_opc, bits<4> imm_opc,
587 Operand AddrMode_r, Operand AddrMode_i,
588 AddrMode am, InstrItinClass itin_r,
589 InstrItinClass itin_i, string asm,
592 T1pILdStEncode<reg_opc,
593 (outs tGPR:$Rt), (ins AddrMode_r:$addr),
594 am, itin_r, asm, "\t$Rt, $addr",
595 [(set tGPR:$Rt, (opnode AddrMode_r:$addr))]>;
597 T1pILdStEncodeImm<imm_opc, 1 /* Load */,
598 (outs tGPR:$Rt), (ins AddrMode_i:$addr),
599 am, itin_i, asm, "\t$Rt, $addr",
600 [(set tGPR:$Rt, (opnode AddrMode_i:$addr))]>;
602 // Stores: reg/reg and reg/imm5
603 multiclass thumb_st_rr_ri_enc<bits<3> reg_opc, bits<4> imm_opc,
604 Operand AddrMode_r, Operand AddrMode_i,
605 AddrMode am, InstrItinClass itin_r,
606 InstrItinClass itin_i, string asm,
609 T1pILdStEncode<reg_opc,
610 (outs), (ins tGPR:$Rt, AddrMode_r:$addr),
611 am, itin_r, asm, "\t$Rt, $addr",
612 [(opnode tGPR:$Rt, AddrMode_r:$addr)]>;
614 T1pILdStEncodeImm<imm_opc, 0 /* Store */,
615 (outs), (ins tGPR:$Rt, AddrMode_i:$addr),
616 am, itin_i, asm, "\t$Rt, $addr",
617 [(opnode tGPR:$Rt, AddrMode_i:$addr)]>;
621 defm tLDR : thumb_ld_rr_ri_enc<0b100, 0b0110, t_addrmode_rrs4,
622 t_addrmode_is4, AddrModeT1_4,
623 IIC_iLoad_r, IIC_iLoad_i, "ldr",
624 UnOpFrag<(load node:$Src)>>;
627 defm tLDRB : thumb_ld_rr_ri_enc<0b110, 0b0111, t_addrmode_rrs1,
628 t_addrmode_is1, AddrModeT1_1,
629 IIC_iLoad_bh_r, IIC_iLoad_bh_i, "ldrb",
630 UnOpFrag<(zextloadi8 node:$Src)>>;
633 defm tLDRH : thumb_ld_rr_ri_enc<0b101, 0b1000, t_addrmode_rrs2,
634 t_addrmode_is2, AddrModeT1_2,
635 IIC_iLoad_bh_r, IIC_iLoad_bh_i, "ldrh",
636 UnOpFrag<(zextloadi16 node:$Src)>>;
638 let AddedComplexity = 10 in
639 def tLDRSB : // A8.6.80
640 T1pILdStEncode<0b011, (outs tGPR:$Rt), (ins t_addrmode_rr:$addr),
641 AddrModeT1_1, IIC_iLoad_bh_r,
642 "ldrsb", "\t$Rt, $addr",
643 [(set tGPR:$Rt, (sextloadi8 t_addrmode_rr:$addr))]>;
645 let AddedComplexity = 10 in
646 def tLDRSH : // A8.6.84
647 T1pILdStEncode<0b111, (outs tGPR:$Rt), (ins t_addrmode_rr:$addr),
648 AddrModeT1_2, IIC_iLoad_bh_r,
649 "ldrsh", "\t$Rt, $addr",
650 [(set tGPR:$Rt, (sextloadi16 t_addrmode_rr:$addr))]>;
652 let canFoldAsLoad = 1 in
653 def tLDRspi : T1pIs<(outs tGPR:$Rt), (ins t_addrmode_sp:$addr), IIC_iLoad_i,
654 "ldr", "\t$Rt, $addr",
655 [(set tGPR:$Rt, (load t_addrmode_sp:$addr))]>,
660 let Inst{7-0} = addr;
663 let canFoldAsLoad = 1, isReMaterializable = 1 in
664 def tLDRpci : T1pIs<(outs tGPR:$Rt), (ins t_addrmode_pc:$addr), IIC_iLoad_i,
665 "ldr", "\t$Rt, $addr",
666 [(set tGPR:$Rt, (load (ARMWrapper tconstpool:$addr)))]>,
667 T1Encoding<{0,1,0,0,1,?}> {
672 let Inst{7-0} = addr;
675 // A8.6.194 & A8.6.192
676 defm tSTR : thumb_st_rr_ri_enc<0b000, 0b0110, t_addrmode_rrs4,
677 t_addrmode_is4, AddrModeT1_4,
678 IIC_iStore_r, IIC_iStore_i, "str",
679 BinOpFrag<(store node:$LHS, node:$RHS)>>;
681 // A8.6.197 & A8.6.195
682 defm tSTRB : thumb_st_rr_ri_enc<0b010, 0b0111, t_addrmode_rrs1,
683 t_addrmode_is1, AddrModeT1_1,
684 IIC_iStore_bh_r, IIC_iStore_bh_i, "strb",
685 BinOpFrag<(truncstorei8 node:$LHS, node:$RHS)>>;
687 // A8.6.207 & A8.6.205
688 defm tSTRH : thumb_st_rr_ri_enc<0b001, 0b1000, t_addrmode_rrs2,
689 t_addrmode_is2, AddrModeT1_2,
690 IIC_iStore_bh_r, IIC_iStore_bh_i, "strh",
691 BinOpFrag<(truncstorei16 node:$LHS, node:$RHS)>>;
694 def tSTRspi : T1pIs<(outs), (ins tGPR:$Rt, t_addrmode_sp:$addr), IIC_iStore_i,
695 "str", "\t$Rt, $addr",
696 [(store tGPR:$Rt, t_addrmode_sp:$addr)]>,
701 let Inst{7-0} = addr;
704 //===----------------------------------------------------------------------===//
705 // Load / store multiple Instructions.
708 // These require base address to be written back or one of the loaded regs.
709 let neverHasSideEffects = 1 in {
711 let mayLoad = 1, hasExtraDefRegAllocReq = 1 in
712 def tLDMIA : T1I<(outs), (ins tGPR:$Rn, pred:$p, reglist:$regs, variable_ops),
713 IIC_iLoad_m, "ldm${p}\t$Rn, $regs", []>, T1Encoding<{1,1,0,0,1,?}> {
717 let Inst{7-0} = regs;
720 // Writeback version is just a pseudo, as there's no encoding difference.
721 // Writeback happens iff the base register is not in the destination register
724 InstTemplate<AddrModeNone, 0, IndexModeNone, Pseudo, GenericDomain,
725 "$Rn = $wb", IIC_iLoad_mu>,
726 PseudoInstExpansion<(tLDMIA tGPR:$Rn, pred:$p, reglist:$regs)> {
728 let OutOperandList = (outs GPR:$wb);
729 let InOperandList = (ins GPR:$Rn, pred:$p, reglist:$regs, variable_ops);
731 let isCodeGenOnly = 1;
733 list<Predicate> Predicates = [IsThumb];
736 // There is no non-writeback version of STM for Thumb.
737 let mayStore = 1, hasExtraSrcRegAllocReq = 1 in
738 def tSTMIA_UPD : Thumb1I<(outs GPR:$wb),
739 (ins tGPR:$Rn, pred:$p, reglist:$regs, variable_ops),
740 AddrModeNone, 2, IIC_iStore_mu,
741 "stm${p}\t$Rn!, $regs", "$Rn = $wb", []>,
742 T1Encoding<{1,1,0,0,0,?}> {
746 let Inst{7-0} = regs;
749 } // neverHasSideEffects
751 def : InstAlias<"ldm${p} $Rn!, $regs",
752 (tLDMIA tGPR:$Rn, pred:$p, reglist:$regs)>,
753 Requires<[IsThumb, IsThumb1Only]>;
755 let mayLoad = 1, Uses = [SP], Defs = [SP], hasExtraDefRegAllocReq = 1 in
756 def tPOP : T1I<(outs), (ins pred:$p, reglist:$regs, variable_ops),
758 "pop${p}\t$regs", []>,
759 T1Misc<{1,1,0,?,?,?,?}> {
761 let Inst{8} = regs{15};
762 let Inst{7-0} = regs{7-0};
765 let mayStore = 1, Uses = [SP], Defs = [SP], hasExtraSrcRegAllocReq = 1 in
766 def tPUSH : T1I<(outs), (ins pred:$p, reglist:$regs, variable_ops),
768 "push${p}\t$regs", []>,
769 T1Misc<{0,1,0,?,?,?,?}> {
771 let Inst{8} = regs{14};
772 let Inst{7-0} = regs{7-0};
775 //===----------------------------------------------------------------------===//
776 // Arithmetic Instructions.
779 // Helper classes for encoding T1pI patterns:
780 class T1pIDPEncode<bits<4> opA, dag oops, dag iops, InstrItinClass itin,
781 string opc, string asm, list<dag> pattern>
782 : T1pI<oops, iops, itin, opc, asm, pattern>,
783 T1DataProcessing<opA> {
789 class T1pIMiscEncode<bits<7> opA, dag oops, dag iops, InstrItinClass itin,
790 string opc, string asm, list<dag> pattern>
791 : T1pI<oops, iops, itin, opc, asm, pattern>,
799 // Helper classes for encoding T1sI patterns:
800 class T1sIDPEncode<bits<4> opA, dag oops, dag iops, InstrItinClass itin,
801 string opc, string asm, list<dag> pattern>
802 : T1sI<oops, iops, itin, opc, asm, pattern>,
803 T1DataProcessing<opA> {
809 class T1sIGenEncode<bits<5> opA, dag oops, dag iops, InstrItinClass itin,
810 string opc, string asm, list<dag> pattern>
811 : T1sI<oops, iops, itin, opc, asm, pattern>,
820 class T1sIGenEncodeImm<bits<5> opA, dag oops, dag iops, InstrItinClass itin,
821 string opc, string asm, list<dag> pattern>
822 : T1sI<oops, iops, itin, opc, asm, pattern>,
830 // Helper classes for encoding T1sIt patterns:
831 class T1sItDPEncode<bits<4> opA, dag oops, dag iops, InstrItinClass itin,
832 string opc, string asm, list<dag> pattern>
833 : T1sIt<oops, iops, itin, opc, asm, pattern>,
834 T1DataProcessing<opA> {
840 class T1sItGenEncodeImm<bits<5> opA, dag oops, dag iops, InstrItinClass itin,
841 string opc, string asm, list<dag> pattern>
842 : T1sIt<oops, iops, itin, opc, asm, pattern>,
846 let Inst{10-8} = Rdn;
847 let Inst{7-0} = imm8;
850 // Add with carry register
851 let isCommutable = 1, Uses = [CPSR] in
853 T1sItDPEncode<0b0101, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm), IIC_iALUr,
854 "adc", "\t$Rdn, $Rm",
855 [(set tGPR:$Rdn, (adde tGPR:$Rn, tGPR:$Rm))]>, Sched<[WriteALU]>;
858 def tADDi3 : // A8.6.4 T1
859 T1sIGenEncodeImm<0b01110, (outs tGPR:$Rd), (ins tGPR:$Rm, imm0_7:$imm3),
861 "add", "\t$Rd, $Rm, $imm3",
862 [(set tGPR:$Rd, (add tGPR:$Rm, imm0_7:$imm3))]>,
865 let Inst{8-6} = imm3;
868 def tADDi8 : // A8.6.4 T2
869 T1sItGenEncodeImm<{1,1,0,?,?}, (outs tGPR:$Rdn),
870 (ins tGPR:$Rn, imm0_255:$imm8), IIC_iALUi,
871 "add", "\t$Rdn, $imm8",
872 [(set tGPR:$Rdn, (add tGPR:$Rn, imm8_255:$imm8))]>,
876 let isCommutable = 1 in
877 def tADDrr : // A8.6.6 T1
878 T1sIGenEncode<0b01100, (outs tGPR:$Rd), (ins tGPR:$Rn, tGPR:$Rm),
880 "add", "\t$Rd, $Rn, $Rm",
881 [(set tGPR:$Rd, (add tGPR:$Rn, tGPR:$Rm))]>, Sched<[WriteALU]>;
883 let neverHasSideEffects = 1 in
884 def tADDhirr : T1pIt<(outs GPR:$Rdn), (ins GPR:$Rn, GPR:$Rm), IIC_iALUr,
885 "add", "\t$Rdn, $Rm", []>,
886 T1Special<{0,0,?,?}>, Sched<[WriteALU]> {
890 let Inst{7} = Rdn{3};
892 let Inst{2-0} = Rdn{2-0};
896 let isCommutable = 1 in
897 def tAND : // A8.6.12
898 T1sItDPEncode<0b0000, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
900 "and", "\t$Rdn, $Rm",
901 [(set tGPR:$Rdn, (and tGPR:$Rn, tGPR:$Rm))]>, Sched<[WriteALU]>;
904 def tASRri : // A8.6.14
905 T1sIGenEncodeImm<{0,1,0,?,?}, (outs tGPR:$Rd), (ins tGPR:$Rm, imm_sr:$imm5),
907 "asr", "\t$Rd, $Rm, $imm5",
908 [(set tGPR:$Rd, (sra tGPR:$Rm, (i32 imm_sr:$imm5)))]>,
911 let Inst{10-6} = imm5;
915 def tASRrr : // A8.6.15
916 T1sItDPEncode<0b0100, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
918 "asr", "\t$Rdn, $Rm",
919 [(set tGPR:$Rdn, (sra tGPR:$Rn, tGPR:$Rm))]>, Sched<[WriteALU]>;
922 def tBIC : // A8.6.20
923 T1sItDPEncode<0b1110, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
925 "bic", "\t$Rdn, $Rm",
926 [(set tGPR:$Rdn, (and tGPR:$Rn, (not tGPR:$Rm)))]>,
930 let isCompare = 1, Defs = [CPSR] in {
931 //FIXME: Disable CMN, as CCodes are backwards from compare expectations
932 // Compare-to-zero still works out, just not the relationals
933 //def tCMN : // A8.6.33
934 // T1pIDPEncode<0b1011, (outs), (ins tGPR:$lhs, tGPR:$rhs),
936 // "cmn", "\t$lhs, $rhs",
937 // [(ARMcmp tGPR:$lhs, (ineg tGPR:$rhs))]>;
939 def tCMNz : // A8.6.33
940 T1pIDPEncode<0b1011, (outs), (ins tGPR:$Rn, tGPR:$Rm),
943 [(ARMcmpZ tGPR:$Rn, (ineg tGPR:$Rm))]>, Sched<[WriteCMP]>;
945 } // isCompare = 1, Defs = [CPSR]
948 let isCompare = 1, Defs = [CPSR] in {
949 def tCMPi8 : T1pI<(outs), (ins tGPR:$Rn, imm0_255:$imm8), IIC_iCMPi,
950 "cmp", "\t$Rn, $imm8",
951 [(ARMcmp tGPR:$Rn, imm0_255:$imm8)]>,
952 T1General<{1,0,1,?,?}>, Sched<[WriteCMP]> {
957 let Inst{7-0} = imm8;
961 def tCMPr : // A8.6.36 T1
962 T1pIDPEncode<0b1010, (outs), (ins tGPR:$Rn, tGPR:$Rm),
965 [(ARMcmp tGPR:$Rn, tGPR:$Rm)]>, Sched<[WriteCMP]>;
967 def tCMPhir : T1pI<(outs), (ins GPR:$Rn, GPR:$Rm), IIC_iCMPr,
968 "cmp", "\t$Rn, $Rm", []>,
969 T1Special<{0,1,?,?}>, Sched<[WriteCMP]> {
975 let Inst{2-0} = Rn{2-0};
977 } // isCompare = 1, Defs = [CPSR]
981 let isCommutable = 1 in
982 def tEOR : // A8.6.45
983 T1sItDPEncode<0b0001, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
985 "eor", "\t$Rdn, $Rm",
986 [(set tGPR:$Rdn, (xor tGPR:$Rn, tGPR:$Rm))]>, Sched<[WriteALU]>;
989 def tLSLri : // A8.6.88
990 T1sIGenEncodeImm<{0,0,0,?,?}, (outs tGPR:$Rd), (ins tGPR:$Rm, imm0_31:$imm5),
992 "lsl", "\t$Rd, $Rm, $imm5",
993 [(set tGPR:$Rd, (shl tGPR:$Rm, (i32 imm:$imm5)))]>,
996 let Inst{10-6} = imm5;
1000 def tLSLrr : // A8.6.89
1001 T1sItDPEncode<0b0010, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
1003 "lsl", "\t$Rdn, $Rm",
1004 [(set tGPR:$Rdn, (shl tGPR:$Rn, tGPR:$Rm))]>, Sched<[WriteALU]>;
1007 def tLSRri : // A8.6.90
1008 T1sIGenEncodeImm<{0,0,1,?,?}, (outs tGPR:$Rd), (ins tGPR:$Rm, imm_sr:$imm5),
1010 "lsr", "\t$Rd, $Rm, $imm5",
1011 [(set tGPR:$Rd, (srl tGPR:$Rm, (i32 imm_sr:$imm5)))]>,
1014 let Inst{10-6} = imm5;
1018 def tLSRrr : // A8.6.91
1019 T1sItDPEncode<0b0011, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
1021 "lsr", "\t$Rdn, $Rm",
1022 [(set tGPR:$Rdn, (srl tGPR:$Rn, tGPR:$Rm))]>, Sched<[WriteALU]>;
1025 let isMoveImm = 1 in
1026 def tMOVi8 : T1sI<(outs tGPR:$Rd), (ins imm0_255:$imm8), IIC_iMOVi,
1027 "mov", "\t$Rd, $imm8",
1028 [(set tGPR:$Rd, imm0_255:$imm8)]>,
1029 T1General<{1,0,0,?,?}>, Sched<[WriteALU]> {
1033 let Inst{10-8} = Rd;
1034 let Inst{7-0} = imm8;
1036 // Because we have an explicit tMOVSr below, we need an alias to handle
1037 // the immediate "movs" form here. Blech.
1038 def : tInstAlias <"movs $Rdn, $imm",
1039 (tMOVi8 tGPR:$Rdn, CPSR, imm0_255:$imm, 14, 0)>;
1041 // A7-73: MOV(2) - mov setting flag.
1043 let neverHasSideEffects = 1 in {
1044 def tMOVr : Thumb1pI<(outs GPR:$Rd), (ins GPR:$Rm), AddrModeNone,
1046 "mov", "\t$Rd, $Rm", "", []>,
1047 T1Special<{1,0,?,?}>, Sched<[WriteALU]> {
1051 let Inst{7} = Rd{3};
1053 let Inst{2-0} = Rd{2-0};
1055 let Defs = [CPSR] in
1056 def tMOVSr : T1I<(outs tGPR:$Rd), (ins tGPR:$Rm), IIC_iMOVr,
1057 "movs\t$Rd, $Rm", []>, Encoding16, Sched<[WriteALU]> {
1061 let Inst{15-6} = 0b0000000000;
1065 } // neverHasSideEffects
1067 // Multiply register
1068 let isCommutable = 1 in
1069 def tMUL : // A8.6.105 T1
1070 Thumb1sI<(outs tGPR:$Rd), (ins tGPR:$Rn, tGPR:$Rm), AddrModeNone, 2,
1071 IIC_iMUL32, "mul", "\t$Rd, $Rn, $Rm", "$Rm = $Rd",
1072 [(set tGPR:$Rd, (mul tGPR:$Rn, tGPR:$Rm))]>,
1073 T1DataProcessing<0b1101> {
1078 let AsmMatchConverter = "cvtThumbMultiply";
1081 def :tInstAlias<"mul${s}${p} $Rdm, $Rn", (tMUL tGPR:$Rdm, s_cc_out:$s, tGPR:$Rn,
1084 // Move inverse register
1085 def tMVN : // A8.6.107
1086 T1sIDPEncode<0b1111, (outs tGPR:$Rd), (ins tGPR:$Rn), IIC_iMVNr,
1087 "mvn", "\t$Rd, $Rn",
1088 [(set tGPR:$Rd, (not tGPR:$Rn))]>, Sched<[WriteALU]>;
1090 // Bitwise or register
1091 let isCommutable = 1 in
1092 def tORR : // A8.6.114
1093 T1sItDPEncode<0b1100, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
1095 "orr", "\t$Rdn, $Rm",
1096 [(set tGPR:$Rdn, (or tGPR:$Rn, tGPR:$Rm))]>, Sched<[WriteALU]>;
1099 def tREV : // A8.6.134
1100 T1pIMiscEncode<{1,0,1,0,0,0,?}, (outs tGPR:$Rd), (ins tGPR:$Rm),
1102 "rev", "\t$Rd, $Rm",
1103 [(set tGPR:$Rd, (bswap tGPR:$Rm))]>,
1104 Requires<[IsThumb, IsThumb1Only, HasV6]>, Sched<[WriteALU]>;
1106 def tREV16 : // A8.6.135
1107 T1pIMiscEncode<{1,0,1,0,0,1,?}, (outs tGPR:$Rd), (ins tGPR:$Rm),
1109 "rev16", "\t$Rd, $Rm",
1110 [(set tGPR:$Rd, (rotr (bswap tGPR:$Rm), (i32 16)))]>,
1111 Requires<[IsThumb, IsThumb1Only, HasV6]>, Sched<[WriteALU]>;
1113 def tREVSH : // A8.6.136
1114 T1pIMiscEncode<{1,0,1,0,1,1,?}, (outs tGPR:$Rd), (ins tGPR:$Rm),
1116 "revsh", "\t$Rd, $Rm",
1117 [(set tGPR:$Rd, (sra (bswap tGPR:$Rm), (i32 16)))]>,
1118 Requires<[IsThumb, IsThumb1Only, HasV6]>, Sched<[WriteALU]>;
1120 // Rotate right register
1121 def tROR : // A8.6.139
1122 T1sItDPEncode<0b0111, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
1124 "ror", "\t$Rdn, $Rm",
1125 [(set tGPR:$Rdn, (rotr tGPR:$Rn, tGPR:$Rm))]>,
1129 def tRSB : // A8.6.141
1130 T1sIDPEncode<0b1001, (outs tGPR:$Rd), (ins tGPR:$Rn),
1132 "rsb", "\t$Rd, $Rn, #0",
1133 [(set tGPR:$Rd, (ineg tGPR:$Rn))]>, Sched<[WriteALU]>;
1135 // Subtract with carry register
1136 let Uses = [CPSR] in
1137 def tSBC : // A8.6.151
1138 T1sItDPEncode<0b0110, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
1140 "sbc", "\t$Rdn, $Rm",
1141 [(set tGPR:$Rdn, (sube tGPR:$Rn, tGPR:$Rm))]>,
1144 // Subtract immediate
1145 def tSUBi3 : // A8.6.210 T1
1146 T1sIGenEncodeImm<0b01111, (outs tGPR:$Rd), (ins tGPR:$Rm, imm0_7:$imm3),
1148 "sub", "\t$Rd, $Rm, $imm3",
1149 [(set tGPR:$Rd, (add tGPR:$Rm, imm0_7_neg:$imm3))]>,
1152 let Inst{8-6} = imm3;
1155 def tSUBi8 : // A8.6.210 T2
1156 T1sItGenEncodeImm<{1,1,1,?,?}, (outs tGPR:$Rdn),
1157 (ins tGPR:$Rn, imm0_255:$imm8), IIC_iALUi,
1158 "sub", "\t$Rdn, $imm8",
1159 [(set tGPR:$Rdn, (add tGPR:$Rn, imm8_255_neg:$imm8))]>,
1162 // Subtract register
1163 def tSUBrr : // A8.6.212
1164 T1sIGenEncode<0b01101, (outs tGPR:$Rd), (ins tGPR:$Rn, tGPR:$Rm),
1166 "sub", "\t$Rd, $Rn, $Rm",
1167 [(set tGPR:$Rd, (sub tGPR:$Rn, tGPR:$Rm))]>,
1171 def tSXTB : // A8.6.222
1172 T1pIMiscEncode<{0,0,1,0,0,1,?}, (outs tGPR:$Rd), (ins tGPR:$Rm),
1174 "sxtb", "\t$Rd, $Rm",
1175 [(set tGPR:$Rd, (sext_inreg tGPR:$Rm, i8))]>,
1176 Requires<[IsThumb, IsThumb1Only, HasV6]>,
1179 // Sign-extend short
1180 def tSXTH : // A8.6.224
1181 T1pIMiscEncode<{0,0,1,0,0,0,?}, (outs tGPR:$Rd), (ins tGPR:$Rm),
1183 "sxth", "\t$Rd, $Rm",
1184 [(set tGPR:$Rd, (sext_inreg tGPR:$Rm, i16))]>,
1185 Requires<[IsThumb, IsThumb1Only, HasV6]>,
1189 let isCompare = 1, isCommutable = 1, Defs = [CPSR] in
1190 def tTST : // A8.6.230
1191 T1pIDPEncode<0b1000, (outs), (ins tGPR:$Rn, tGPR:$Rm), IIC_iTSTr,
1192 "tst", "\t$Rn, $Rm",
1193 [(ARMcmpZ (and_su tGPR:$Rn, tGPR:$Rm), 0)]>,
1197 def tUXTB : // A8.6.262
1198 T1pIMiscEncode<{0,0,1,0,1,1,?}, (outs tGPR:$Rd), (ins tGPR:$Rm),
1200 "uxtb", "\t$Rd, $Rm",
1201 [(set tGPR:$Rd, (and tGPR:$Rm, 0xFF))]>,
1202 Requires<[IsThumb, IsThumb1Only, HasV6]>,
1205 // Zero-extend short
1206 def tUXTH : // A8.6.264
1207 T1pIMiscEncode<{0,0,1,0,1,0,?}, (outs tGPR:$Rd), (ins tGPR:$Rm),
1209 "uxth", "\t$Rd, $Rm",
1210 [(set tGPR:$Rd, (and tGPR:$Rm, 0xFFFF))]>,
1211 Requires<[IsThumb, IsThumb1Only, HasV6]>, Sched<[WriteALU]>;
1213 // Conditional move tMOVCCr - Used to implement the Thumb SELECT_CC operation.
1214 // Expanded after instruction selection into a branch sequence.
1215 let usesCustomInserter = 1 in // Expanded after instruction selection.
1216 def tMOVCCr_pseudo :
1217 PseudoInst<(outs tGPR:$dst), (ins tGPR:$false, tGPR:$true, cmovpred:$p),
1219 [(set tGPR:$dst, (ARMcmov tGPR:$false, tGPR:$true, cmovpred:$p))]>;
1221 // tLEApcrel - Load a pc-relative address into a register without offending the
1224 def tADR : T1I<(outs tGPR:$Rd), (ins t_adrlabel:$addr, pred:$p),
1225 IIC_iALUi, "adr{$p}\t$Rd, $addr", []>,
1226 T1Encoding<{1,0,1,0,0,?}>, Sched<[WriteALU]> {
1229 let Inst{10-8} = Rd;
1230 let Inst{7-0} = addr;
1231 let DecoderMethod = "DecodeThumbAddSpecialReg";
1234 let neverHasSideEffects = 1, isReMaterializable = 1 in
1235 def tLEApcrel : tPseudoInst<(outs tGPR:$Rd), (ins i32imm:$label, pred:$p),
1236 2, IIC_iALUi, []>, Sched<[WriteALU]>;
1238 let hasSideEffects = 1 in
1239 def tLEApcrelJT : tPseudoInst<(outs tGPR:$Rd),
1240 (ins i32imm:$label, nohash_imm:$id, pred:$p),
1241 2, IIC_iALUi, []>, Sched<[WriteALU]>;
1243 //===----------------------------------------------------------------------===//
1247 // __aeabi_read_tp preserves the registers r1-r3.
1248 // This is a pseudo inst so that we can get the encoding right,
1249 // complete with fixup for the aeabi_read_tp function.
1250 let isCall = 1, Defs = [R0, R12, LR, CPSR], Uses = [SP] in
1251 def tTPsoft : tPseudoInst<(outs), (ins), 4, IIC_Br,
1252 [(set R0, ARMthread_pointer)]>,
1255 //===----------------------------------------------------------------------===//
1256 // SJLJ Exception handling intrinsics
1259 // eh_sjlj_setjmp() is an instruction sequence to store the return address and
1260 // save #0 in R0 for the non-longjmp case. Since by its nature we may be coming
1261 // from some other function to get here, and we're using the stack frame for the
1262 // containing function to save/restore registers, we can't keep anything live in
1263 // regs across the eh_sjlj_setjmp(), else it will almost certainly have been
1264 // tromped upon when we get here from a longjmp(). We force everything out of
1265 // registers except for our own input by listing the relevant registers in
1266 // Defs. By doing so, we also cause the prologue/epilogue code to actively
1267 // preserve all of the callee-saved resgisters, which is exactly what we want.
1268 // $val is a scratch register for our use.
1269 let Defs = [ R0, R1, R2, R3, R4, R5, R6, R7, R12, CPSR ],
1270 hasSideEffects = 1, isBarrier = 1, isCodeGenOnly = 1,
1271 usesCustomInserter = 1 in
1272 def tInt_eh_sjlj_setjmp : ThumbXI<(outs),(ins tGPR:$src, tGPR:$val),
1273 AddrModeNone, 0, NoItinerary, "","",
1274 [(set R0, (ARMeh_sjlj_setjmp tGPR:$src, tGPR:$val))]>;
1276 // FIXME: Non-IOS version(s)
1277 let isBarrier = 1, hasSideEffects = 1, isTerminator = 1, isCodeGenOnly = 1,
1278 Defs = [ R7, LR, SP ] in
1279 def tInt_eh_sjlj_longjmp : XI<(outs), (ins GPR:$src, GPR:$scratch),
1280 AddrModeNone, 0, IndexModeNone,
1281 Pseudo, NoItinerary, "", "",
1282 [(ARMeh_sjlj_longjmp GPR:$src, GPR:$scratch)]>,
1283 Requires<[IsThumb, IsIOS]>;
1285 //===----------------------------------------------------------------------===//
1286 // Non-Instruction Patterns
1290 def : T1Pat<(ARMcmpZ tGPR:$Rn, imm0_255:$imm8),
1291 (tCMPi8 tGPR:$Rn, imm0_255:$imm8)>;
1292 def : T1Pat<(ARMcmpZ tGPR:$Rn, tGPR:$Rm),
1293 (tCMPr tGPR:$Rn, tGPR:$Rm)>;
1296 def : T1Pat<(addc tGPR:$lhs, imm0_7:$rhs),
1297 (tADDi3 tGPR:$lhs, imm0_7:$rhs)>;
1298 def : T1Pat<(addc tGPR:$lhs, imm8_255:$rhs),
1299 (tADDi8 tGPR:$lhs, imm8_255:$rhs)>;
1300 def : T1Pat<(addc tGPR:$lhs, tGPR:$rhs),
1301 (tADDrr tGPR:$lhs, tGPR:$rhs)>;
1303 // Subtract with carry
1304 def : T1Pat<(addc tGPR:$lhs, imm0_7_neg:$rhs),
1305 (tSUBi3 tGPR:$lhs, imm0_7_neg:$rhs)>;
1306 def : T1Pat<(addc tGPR:$lhs, imm8_255_neg:$rhs),
1307 (tSUBi8 tGPR:$lhs, imm8_255_neg:$rhs)>;
1308 def : T1Pat<(subc tGPR:$lhs, tGPR:$rhs),
1309 (tSUBrr tGPR:$lhs, tGPR:$rhs)>;
1312 def : T1Pat<(ARMWrapper tconstpool :$dst), (tLEApcrel tconstpool :$dst)>;
1315 def tLDRLIT_ga_pcrel : PseudoInst<(outs tGPR:$dst), (ins i32imm:$addr),
1318 (ARMWrapperPIC tglobaladdr:$addr))]>,
1319 Requires<[IsThumb, DontUseMovt]>;
1321 def tLDRLIT_ga_abs : PseudoInst<(outs tGPR:$dst), (ins i32imm:$src),
1324 (ARMWrapper tglobaladdr:$src))]>,
1325 Requires<[IsThumb, DontUseMovt]>;
1329 def : T1Pat<(ARMWrapperJT tjumptable:$dst, imm:$id),
1330 (tLEApcrelJT tjumptable:$dst, imm:$id)>;
1333 def : T1Pat<(ARMtcall texternalsym:$func), (tBL texternalsym:$func)>,
1334 Requires<[IsThumb]>;
1336 def : Tv5Pat<(ARMcall texternalsym:$func), (tBLXi texternalsym:$func)>,
1337 Requires<[IsThumb, HasV5T]>;
1339 // Indirect calls to ARM routines
1340 def : Tv5Pat<(ARMcall GPR:$dst), (tBLXr GPR:$dst)>,
1341 Requires<[IsThumb, HasV5T]>;
1343 // zextload i1 -> zextload i8
1344 def : T1Pat<(zextloadi1 t_addrmode_rrs1:$addr),
1345 (tLDRBr t_addrmode_rrs1:$addr)>;
1346 def : T1Pat<(zextloadi1 t_addrmode_is1:$addr),
1347 (tLDRBi t_addrmode_is1:$addr)>;
1349 // extload -> zextload
1350 def : T1Pat<(extloadi1 t_addrmode_rrs1:$addr), (tLDRBr t_addrmode_rrs1:$addr)>;
1351 def : T1Pat<(extloadi1 t_addrmode_is1:$addr), (tLDRBi t_addrmode_is1:$addr)>;
1352 def : T1Pat<(extloadi8 t_addrmode_rrs1:$addr), (tLDRBr t_addrmode_rrs1:$addr)>;
1353 def : T1Pat<(extloadi8 t_addrmode_is1:$addr), (tLDRBi t_addrmode_is1:$addr)>;
1354 def : T1Pat<(extloadi16 t_addrmode_rrs2:$addr), (tLDRHr t_addrmode_rrs2:$addr)>;
1355 def : T1Pat<(extloadi16 t_addrmode_is2:$addr), (tLDRHi t_addrmode_is2:$addr)>;
1357 // If it's impossible to use [r,r] address mode for sextload, select to
1358 // ldr{b|h} + sxt{b|h} instead.
1359 def : T1Pat<(sextloadi8 t_addrmode_is1:$addr),
1360 (tSXTB (tLDRBi t_addrmode_is1:$addr))>,
1361 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1362 def : T1Pat<(sextloadi8 t_addrmode_rrs1:$addr),
1363 (tSXTB (tLDRBr t_addrmode_rrs1:$addr))>,
1364 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1365 def : T1Pat<(sextloadi16 t_addrmode_is2:$addr),
1366 (tSXTH (tLDRHi t_addrmode_is2:$addr))>,
1367 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1368 def : T1Pat<(sextloadi16 t_addrmode_rrs2:$addr),
1369 (tSXTH (tLDRHr t_addrmode_rrs2:$addr))>,
1370 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1372 def : T1Pat<(sextloadi8 t_addrmode_rrs1:$addr),
1373 (tASRri (tLSLri (tLDRBr t_addrmode_rrs1:$addr), 24), 24)>;
1374 def : T1Pat<(sextloadi8 t_addrmode_is1:$addr),
1375 (tASRri (tLSLri (tLDRBi t_addrmode_is1:$addr), 24), 24)>;
1376 def : T1Pat<(sextloadi16 t_addrmode_rrs2:$addr),
1377 (tASRri (tLSLri (tLDRHr t_addrmode_rrs2:$addr), 16), 16)>;
1378 def : T1Pat<(sextloadi16 t_addrmode_is2:$addr),
1379 (tASRri (tLSLri (tLDRHi t_addrmode_is2:$addr), 16), 16)>;
1381 def : T1Pat<(atomic_load_8 t_addrmode_is1:$src),
1382 (tLDRBi t_addrmode_is1:$src)>;
1383 def : T1Pat<(atomic_load_8 t_addrmode_rrs1:$src),
1384 (tLDRBr t_addrmode_rrs1:$src)>;
1385 def : T1Pat<(atomic_load_16 t_addrmode_is2:$src),
1386 (tLDRHi t_addrmode_is2:$src)>;
1387 def : T1Pat<(atomic_load_16 t_addrmode_rrs2:$src),
1388 (tLDRHr t_addrmode_rrs2:$src)>;
1389 def : T1Pat<(atomic_load_32 t_addrmode_is4:$src),
1390 (tLDRi t_addrmode_is4:$src)>;
1391 def : T1Pat<(atomic_load_32 t_addrmode_rrs4:$src),
1392 (tLDRr t_addrmode_rrs4:$src)>;
1393 def : T1Pat<(atomic_store_8 t_addrmode_is1:$ptr, tGPR:$val),
1394 (tSTRBi tGPR:$val, t_addrmode_is1:$ptr)>;
1395 def : T1Pat<(atomic_store_8 t_addrmode_rrs1:$ptr, tGPR:$val),
1396 (tSTRBr tGPR:$val, t_addrmode_rrs1:$ptr)>;
1397 def : T1Pat<(atomic_store_16 t_addrmode_is2:$ptr, tGPR:$val),
1398 (tSTRHi tGPR:$val, t_addrmode_is2:$ptr)>;
1399 def : T1Pat<(atomic_store_16 t_addrmode_rrs2:$ptr, tGPR:$val),
1400 (tSTRHr tGPR:$val, t_addrmode_rrs2:$ptr)>;
1401 def : T1Pat<(atomic_store_32 t_addrmode_is4:$ptr, tGPR:$val),
1402 (tSTRi tGPR:$val, t_addrmode_is4:$ptr)>;
1403 def : T1Pat<(atomic_store_32 t_addrmode_rrs4:$ptr, tGPR:$val),
1404 (tSTRr tGPR:$val, t_addrmode_rrs4:$ptr)>;
1406 // Large immediate handling.
1409 def : T1Pat<(i32 thumb_immshifted:$src),
1410 (tLSLri (tMOVi8 (thumb_immshifted_val imm:$src)),
1411 (thumb_immshifted_shamt imm:$src))>;
1413 def : T1Pat<(i32 imm0_255_comp:$src),
1414 (tMVN (tMOVi8 (imm_comp_XFORM imm:$src)))>;
1416 // Pseudo instruction that combines ldr from constpool and add pc. This should
1417 // be expanded into two instructions late to allow if-conversion and
1419 let isReMaterializable = 1 in
1420 def tLDRpci_pic : PseudoInst<(outs GPR:$dst), (ins i32imm:$addr, pclabel:$cp),
1422 [(set GPR:$dst, (ARMpic_add (load (ARMWrapper tconstpool:$addr)),
1424 Requires<[IsThumb, IsThumb1Only]>;
1426 // Pseudo-instruction for merged POP and return.
1427 // FIXME: remove when we have a way to marking a MI with these properties.
1428 let isReturn = 1, isTerminator = 1, isBarrier = 1, mayLoad = 1,
1429 hasExtraDefRegAllocReq = 1 in
1430 def tPOP_RET : tPseudoExpand<(outs), (ins pred:$p, reglist:$regs, variable_ops),
1432 (tPOP pred:$p, reglist:$regs)>, Sched<[WriteBrL]>;
1434 // Indirect branch using "mov pc, $Rm"
1435 let isBranch = 1, isTerminator = 1, isBarrier = 1, isIndirectBranch = 1 in {
1436 def tBRIND : tPseudoExpand<(outs), (ins GPR:$Rm, pred:$p),
1437 2, IIC_Br, [(brind GPR:$Rm)],
1438 (tMOVr PC, GPR:$Rm, pred:$p)>, Sched<[WriteBr]>;
1442 // In Thumb1, "nop" is encoded as a "mov r8, r8". Technically, the bf00
1443 // encoding is available on ARMv6K, but we don't differentiate that finely.
1444 def : InstAlias<"nop", (tMOVr R8, R8, 14, 0)>,Requires<[IsThumb, IsThumb1Only]>;
1447 // For round-trip assembly/disassembly, we have to handle a CPS instruction
1448 // without any iflags. That's not, strictly speaking, valid syntax, but it's
1449 // a useful extension and assembles to defined behaviour (the insn does
1451 def : tInstAlias<"cps$imod", (tCPS imod_op:$imod, 0)>;
1452 def : tInstAlias<"cps$imod", (tCPS imod_op:$imod, 0)>;
1454 // "neg" is and alias for "rsb rd, rn, #0"
1455 def : tInstAlias<"neg${s}${p} $Rd, $Rm",
1456 (tRSB tGPR:$Rd, s_cc_out:$s, tGPR:$Rm, pred:$p)>;
1459 // Implied destination operand forms for shifts.
1460 def : tInstAlias<"lsl${s}${p} $Rdm, $imm",
1461 (tLSLri tGPR:$Rdm, cc_out:$s, tGPR:$Rdm, imm0_31:$imm, pred:$p)>;
1462 def : tInstAlias<"lsr${s}${p} $Rdm, $imm",
1463 (tLSRri tGPR:$Rdm, cc_out:$s, tGPR:$Rdm, imm_sr:$imm, pred:$p)>;
1464 def : tInstAlias<"asr${s}${p} $Rdm, $imm",
1465 (tASRri tGPR:$Rdm, cc_out:$s, tGPR:$Rdm, imm_sr:$imm, pred:$p)>;