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 tNOP : T1pI<(outs), (ins), NoItinerary, "nop", "", []>,
273 T1SystemEncoding<0x00>, // A8.6.110
274 Requires<[IsThumb2]>;
276 def tYIELD : T1pI<(outs), (ins), NoItinerary, "yield", "", []>,
277 T1SystemEncoding<0x10>, // A8.6.410
278 Requires<[IsThumb2]>;
280 def tWFE : T1pI<(outs), (ins), NoItinerary, "wfe", "", []>,
281 T1SystemEncoding<0x20>, // A8.6.408
282 Requires<[IsThumb2]>;
284 def tWFI : T1pI<(outs), (ins), NoItinerary, "wfi", "", []>,
285 T1SystemEncoding<0x30>, // A8.6.409
286 Requires<[IsThumb2]>;
288 def tSEV : T1pI<(outs), (ins), NoItinerary, "sev", "", []>,
289 T1SystemEncoding<0x40>, // A8.6.157
290 Requires<[IsThumb2]>;
292 // The imm operand $val can be used by a debugger to store more information
293 // about the breakpoint.
294 def tBKPT : T1I<(outs), (ins imm0_255:$val), NoItinerary, "bkpt\t$val",
296 T1Encoding<0b101111> {
297 let Inst{9-8} = 0b10;
303 def tSETEND : T1I<(outs), (ins setend_op:$end), NoItinerary, "setend\t$end",
304 []>, T1Encoding<0b101101> {
307 let Inst{9-5} = 0b10010;
310 let Inst{2-0} = 0b000;
313 // Change Processor State is a system instruction -- for disassembly only.
314 def tCPS : T1I<(outs), (ins imod_op:$imod, iflags_op:$iflags),
315 NoItinerary, "cps$imod $iflags", []>,
323 let Inst{2-0} = iflags;
324 let DecoderMethod = "DecodeThumbCPS";
327 // For both thumb1 and thumb2.
328 let isNotDuplicable = 1, isCodeGenOnly = 1 in
329 def tPICADD : TIt<(outs GPR:$dst), (ins GPR:$lhs, pclabel:$cp), IIC_iALUr, "",
330 [(set GPR:$dst, (ARMpic_add GPR:$lhs, imm:$cp))]>,
331 T1Special<{0,0,?,?}>, Sched<[WriteALU]> {
334 let Inst{6-3} = 0b1111; // Rm = pc
338 // ADD <Rd>, sp, #<imm8>
339 // FIXME: This should not be marked as having side effects, and it should be
340 // rematerializable. Clearing the side effect bit causes miscompilations,
341 // probably because the instruction can be moved around.
342 def tADDrSPi : T1pI<(outs tGPR:$dst), (ins GPRsp:$sp, t_imm0_1020s4:$imm),
343 IIC_iALUi, "add", "\t$dst, $sp, $imm", []>,
344 T1Encoding<{1,0,1,0,1,?}>, Sched<[WriteALU]> {
348 let Inst{10-8} = dst;
350 let DecoderMethod = "DecodeThumbAddSpecialReg";
353 // ADD sp, sp, #<imm7>
354 def tADDspi : T1pIt<(outs GPRsp:$Rdn), (ins GPRsp:$Rn, t_imm0_508s4:$imm),
355 IIC_iALUi, "add", "\t$Rdn, $imm", []>,
356 T1Misc<{0,0,0,0,0,?,?}>, Sched<[WriteALU]> {
360 let DecoderMethod = "DecodeThumbAddSPImm";
363 // SUB sp, sp, #<imm7>
364 // FIXME: The encoding and the ASM string don't match up.
365 def tSUBspi : T1pIt<(outs GPRsp:$Rdn), (ins GPRsp:$Rn, t_imm0_508s4:$imm),
366 IIC_iALUi, "sub", "\t$Rdn, $imm", []>,
367 T1Misc<{0,0,0,0,1,?,?}>, Sched<[WriteALU]> {
371 let DecoderMethod = "DecodeThumbAddSPImm";
374 def : tInstAlias<"add${p} sp, $imm",
375 (tSUBspi SP, t_imm0_508s4_neg:$imm, pred:$p)>;
376 def : tInstAlias<"add${p} sp, sp, $imm",
377 (tSUBspi SP, t_imm0_508s4_neg:$imm, pred:$p)>;
379 // Can optionally specify SP as a three operand instruction.
380 def : tInstAlias<"add${p} sp, sp, $imm",
381 (tADDspi SP, t_imm0_508s4:$imm, pred:$p)>;
382 def : tInstAlias<"sub${p} sp, sp, $imm",
383 (tSUBspi SP, t_imm0_508s4:$imm, pred:$p)>;
386 def tADDrSP : T1pI<(outs GPR:$Rdn), (ins GPRsp:$sp, GPR:$Rn), IIC_iALUr,
387 "add", "\t$Rdn, $sp, $Rn", []>,
388 T1Special<{0,0,?,?}>, Sched<[WriteALU]> {
389 // A8.6.9 Encoding T1
391 let Inst{7} = Rdn{3};
392 let Inst{6-3} = 0b1101;
393 let Inst{2-0} = Rdn{2-0};
394 let DecoderMethod = "DecodeThumbAddSPReg";
398 def tADDspr : T1pIt<(outs GPRsp:$Rdn), (ins GPRsp:$Rn, GPR:$Rm), IIC_iALUr,
399 "add", "\t$Rdn, $Rm", []>,
400 T1Special<{0,0,?,?}>, Sched<[WriteALU]> {
401 // A8.6.9 Encoding T2
405 let Inst{2-0} = 0b101;
406 let DecoderMethod = "DecodeThumbAddSPReg";
409 //===----------------------------------------------------------------------===//
410 // Control Flow Instructions.
414 let isBranch = 1, isTerminator = 1, isBarrier = 1, isIndirectBranch = 1 in {
415 def tBX : TI<(outs), (ins GPR:$Rm, pred:$p), IIC_Br, "bx${p}\t$Rm", []>,
416 T1Special<{1,1,0,?}>, Sched<[WriteBr]> {
420 let Inst{2-0} = 0b000;
421 let Unpredictable{2-0} = 0b111;
425 let isReturn = 1, isTerminator = 1, isBarrier = 1 in {
426 def tBX_RET : tPseudoExpand<(outs), (ins pred:$p), 2, IIC_Br,
427 [(ARMretflag)], (tBX LR, pred:$p)>, Sched<[WriteBr]>;
429 // Alternative return instruction used by vararg functions.
430 def tBX_RET_vararg : tPseudoExpand<(outs), (ins tGPR:$Rm, pred:$p),
432 (tBX GPR:$Rm, pred:$p)>, Sched<[WriteBr]>;
435 // All calls clobber the non-callee saved registers. SP is marked as a use to
436 // prevent stack-pointer assignments that appear immediately before calls from
437 // potentially appearing dead.
439 Defs = [LR], Uses = [SP] in {
440 // Also used for Thumb2
441 def tBL : TIx2<0b11110, 0b11, 1,
442 (outs), (ins pred:$p, t_bltarget:$func), IIC_Br,
444 [(ARMtcall tglobaladdr:$func)]>,
445 Requires<[IsThumb]>, Sched<[WriteBrL]> {
447 let Inst{26} = func{23};
448 let Inst{25-16} = func{20-11};
449 let Inst{13} = func{22};
450 let Inst{11} = func{21};
451 let Inst{10-0} = func{10-0};
454 // ARMv5T and above, also used for Thumb2
455 def tBLXi : TIx2<0b11110, 0b11, 0,
456 (outs), (ins pred:$p, t_blxtarget:$func), IIC_Br,
458 [(ARMcall tglobaladdr:$func)]>,
459 Requires<[IsThumb, HasV5T]>, Sched<[WriteBrL]> {
461 let Inst{26} = func{23};
462 let Inst{25-16} = func{20-11};
463 let Inst{13} = func{22};
464 let Inst{11} = func{21};
465 let Inst{10-1} = func{10-1};
466 let Inst{0} = 0; // func{0} is assumed zero
469 // Also used for Thumb2
470 def tBLXr : TI<(outs), (ins pred:$p, GPR:$func), IIC_Br,
472 [(ARMtcall GPR:$func)]>,
473 Requires<[IsThumb, HasV5T]>,
474 T1Special<{1,1,1,?}>, Sched<[WriteBrL]> { // A6.2.3 & A8.6.24;
476 let Inst{6-3} = func;
477 let Inst{2-0} = 0b000;
481 def tBX_CALL : tPseudoInst<(outs), (ins tGPR:$func),
483 [(ARMcall_nolink tGPR:$func)]>,
484 Requires<[IsThumb, IsThumb1Only]>, Sched<[WriteBr]>;
487 let isBranch = 1, isTerminator = 1, isBarrier = 1 in {
488 let isPredicable = 1 in
489 def tB : T1pI<(outs), (ins t_brtarget:$target), IIC_Br,
490 "b", "\t$target", [(br bb:$target)]>,
491 T1Encoding<{1,1,1,0,0,?}>, Sched<[WriteBr]> {
493 let Inst{10-0} = target;
494 let AsmMatchConverter = "cvtThumbBranches";
498 // Just a pseudo for a tBL instruction. Needed to let regalloc know about
499 // the clobber of LR.
501 def tBfar : tPseudoExpand<(outs), (ins t_bltarget:$target, pred:$p),
502 4, IIC_Br, [], (tBL pred:$p, t_bltarget:$target)>,
505 def tBR_JTr : tPseudoInst<(outs),
506 (ins tGPR:$target, i32imm:$jt, i32imm:$id),
508 [(ARMbrjt tGPR:$target, tjumptable:$jt, imm:$id)]>,
509 Sched<[WriteBrTbl]> {
510 list<Predicate> Predicates = [IsThumb, IsThumb1Only];
514 // FIXME: should be able to write a pattern for ARMBrcond, but can't use
515 // a two-value operand where a dag node expects two operands. :(
516 let isBranch = 1, isTerminator = 1 in
517 def tBcc : T1I<(outs), (ins t_bcctarget:$target, pred:$p), IIC_Br,
519 [/*(ARMbrcond bb:$target, imm:$cc)*/]>,
520 T1BranchCond<{1,1,0,1}>, Sched<[WriteBr]> {
524 let Inst{7-0} = target;
525 let AsmMatchConverter = "cvtThumbBranches";
530 let isCall = 1, isTerminator = 1, isReturn = 1, isBarrier = 1 in {
533 def tTAILJMPr : tPseudoExpand<(outs), (ins tcGPR:$dst),
535 (tBX GPR:$dst, (ops 14, zero_reg))>,
536 Requires<[IsThumb]>, Sched<[WriteBr]>;
538 // tTAILJMPd: IOS version uses a Thumb2 branch (no Thumb1 tail calls
539 // on IOS), so it's in ARMInstrThumb2.td.
542 def tTAILJMPdND : tPseudoExpand<(outs),
543 (ins t_brtarget:$dst, pred:$p),
545 (tB t_brtarget:$dst, pred:$p)>,
546 Requires<[IsThumb, IsNotIOS]>, Sched<[WriteBr]>;
551 // A8.6.218 Supervisor Call (Software Interrupt)
552 // A8.6.16 B: Encoding T1
553 // If Inst{11-8} == 0b1111 then SEE SVC
554 let isCall = 1, Uses = [SP] in
555 def tSVC : T1pI<(outs), (ins imm0_255:$imm), IIC_Br,
556 "svc", "\t$imm", []>, Encoding16, Sched<[WriteBr]> {
558 let Inst{15-12} = 0b1101;
559 let Inst{11-8} = 0b1111;
563 // The assembler uses 0xDEFE for a trap instruction.
564 let isBarrier = 1, isTerminator = 1 in
565 def tTRAP : TI<(outs), (ins), IIC_Br,
566 "trap", [(trap)]>, Encoding16, Sched<[WriteBr]> {
570 //===----------------------------------------------------------------------===//
571 // Load Store Instructions.
574 // Loads: reg/reg and reg/imm5
575 let canFoldAsLoad = 1, isReMaterializable = 1 in
576 multiclass thumb_ld_rr_ri_enc<bits<3> reg_opc, bits<4> imm_opc,
577 Operand AddrMode_r, Operand AddrMode_i,
578 AddrMode am, InstrItinClass itin_r,
579 InstrItinClass itin_i, string asm,
582 T1pILdStEncode<reg_opc,
583 (outs tGPR:$Rt), (ins AddrMode_r:$addr),
584 am, itin_r, asm, "\t$Rt, $addr",
585 [(set tGPR:$Rt, (opnode AddrMode_r:$addr))]>;
587 T1pILdStEncodeImm<imm_opc, 1 /* Load */,
588 (outs tGPR:$Rt), (ins AddrMode_i:$addr),
589 am, itin_i, asm, "\t$Rt, $addr",
590 [(set tGPR:$Rt, (opnode AddrMode_i:$addr))]>;
592 // Stores: reg/reg and reg/imm5
593 multiclass thumb_st_rr_ri_enc<bits<3> reg_opc, bits<4> imm_opc,
594 Operand AddrMode_r, Operand AddrMode_i,
595 AddrMode am, InstrItinClass itin_r,
596 InstrItinClass itin_i, string asm,
599 T1pILdStEncode<reg_opc,
600 (outs), (ins tGPR:$Rt, AddrMode_r:$addr),
601 am, itin_r, asm, "\t$Rt, $addr",
602 [(opnode tGPR:$Rt, AddrMode_r:$addr)]>;
604 T1pILdStEncodeImm<imm_opc, 0 /* Store */,
605 (outs), (ins tGPR:$Rt, AddrMode_i:$addr),
606 am, itin_i, asm, "\t$Rt, $addr",
607 [(opnode tGPR:$Rt, AddrMode_i:$addr)]>;
611 defm tLDR : thumb_ld_rr_ri_enc<0b100, 0b0110, t_addrmode_rrs4,
612 t_addrmode_is4, AddrModeT1_4,
613 IIC_iLoad_r, IIC_iLoad_i, "ldr",
614 UnOpFrag<(load node:$Src)>>;
617 defm tLDRB : thumb_ld_rr_ri_enc<0b110, 0b0111, t_addrmode_rrs1,
618 t_addrmode_is1, AddrModeT1_1,
619 IIC_iLoad_bh_r, IIC_iLoad_bh_i, "ldrb",
620 UnOpFrag<(zextloadi8 node:$Src)>>;
623 defm tLDRH : thumb_ld_rr_ri_enc<0b101, 0b1000, t_addrmode_rrs2,
624 t_addrmode_is2, AddrModeT1_2,
625 IIC_iLoad_bh_r, IIC_iLoad_bh_i, "ldrh",
626 UnOpFrag<(zextloadi16 node:$Src)>>;
628 let AddedComplexity = 10 in
629 def tLDRSB : // A8.6.80
630 T1pILdStEncode<0b011, (outs tGPR:$Rt), (ins t_addrmode_rr:$addr),
631 AddrModeT1_1, IIC_iLoad_bh_r,
632 "ldrsb", "\t$Rt, $addr",
633 [(set tGPR:$Rt, (sextloadi8 t_addrmode_rr:$addr))]>;
635 let AddedComplexity = 10 in
636 def tLDRSH : // A8.6.84
637 T1pILdStEncode<0b111, (outs tGPR:$Rt), (ins t_addrmode_rr:$addr),
638 AddrModeT1_2, IIC_iLoad_bh_r,
639 "ldrsh", "\t$Rt, $addr",
640 [(set tGPR:$Rt, (sextloadi16 t_addrmode_rr:$addr))]>;
642 let canFoldAsLoad = 1 in
643 def tLDRspi : T1pIs<(outs tGPR:$Rt), (ins t_addrmode_sp:$addr), IIC_iLoad_i,
644 "ldr", "\t$Rt, $addr",
645 [(set tGPR:$Rt, (load t_addrmode_sp:$addr))]>,
650 let Inst{7-0} = addr;
653 let canFoldAsLoad = 1, isReMaterializable = 1 in
654 def tLDRpci : T1pIs<(outs tGPR:$Rt), (ins t_addrmode_pc:$addr), IIC_iLoad_i,
655 "ldr", "\t$Rt, $addr",
656 [(set tGPR:$Rt, (load (ARMWrapper tconstpool:$addr)))]>,
657 T1Encoding<{0,1,0,0,1,?}> {
662 let Inst{7-0} = addr;
665 // A8.6.194 & A8.6.192
666 defm tSTR : thumb_st_rr_ri_enc<0b000, 0b0110, t_addrmode_rrs4,
667 t_addrmode_is4, AddrModeT1_4,
668 IIC_iStore_r, IIC_iStore_i, "str",
669 BinOpFrag<(store node:$LHS, node:$RHS)>>;
671 // A8.6.197 & A8.6.195
672 defm tSTRB : thumb_st_rr_ri_enc<0b010, 0b0111, t_addrmode_rrs1,
673 t_addrmode_is1, AddrModeT1_1,
674 IIC_iStore_bh_r, IIC_iStore_bh_i, "strb",
675 BinOpFrag<(truncstorei8 node:$LHS, node:$RHS)>>;
677 // A8.6.207 & A8.6.205
678 defm tSTRH : thumb_st_rr_ri_enc<0b001, 0b1000, t_addrmode_rrs2,
679 t_addrmode_is2, AddrModeT1_2,
680 IIC_iStore_bh_r, IIC_iStore_bh_i, "strh",
681 BinOpFrag<(truncstorei16 node:$LHS, node:$RHS)>>;
684 def tSTRspi : T1pIs<(outs), (ins tGPR:$Rt, t_addrmode_sp:$addr), IIC_iStore_i,
685 "str", "\t$Rt, $addr",
686 [(store tGPR:$Rt, t_addrmode_sp:$addr)]>,
691 let Inst{7-0} = addr;
694 //===----------------------------------------------------------------------===//
695 // Load / store multiple Instructions.
698 // These require base address to be written back or one of the loaded regs.
699 let neverHasSideEffects = 1 in {
701 let mayLoad = 1, hasExtraDefRegAllocReq = 1 in
702 def tLDMIA : T1I<(outs), (ins tGPR:$Rn, pred:$p, reglist:$regs, variable_ops),
703 IIC_iLoad_m, "ldm${p}\t$Rn, $regs", []>, T1Encoding<{1,1,0,0,1,?}> {
707 let Inst{7-0} = regs;
710 // Writeback version is just a pseudo, as there's no encoding difference.
711 // Writeback happens iff the base register is not in the destination register
714 InstTemplate<AddrModeNone, 0, IndexModeNone, Pseudo, GenericDomain,
715 "$Rn = $wb", IIC_iLoad_mu>,
716 PseudoInstExpansion<(tLDMIA tGPR:$Rn, pred:$p, reglist:$regs)> {
718 let OutOperandList = (outs GPR:$wb);
719 let InOperandList = (ins GPR:$Rn, pred:$p, reglist:$regs, variable_ops);
721 let isCodeGenOnly = 1;
723 list<Predicate> Predicates = [IsThumb];
726 // There is no non-writeback version of STM for Thumb.
727 let mayStore = 1, hasExtraSrcRegAllocReq = 1 in
728 def tSTMIA_UPD : Thumb1I<(outs GPR:$wb),
729 (ins tGPR:$Rn, pred:$p, reglist:$regs, variable_ops),
730 AddrModeNone, 2, IIC_iStore_mu,
731 "stm${p}\t$Rn!, $regs", "$Rn = $wb", []>,
732 T1Encoding<{1,1,0,0,0,?}> {
736 let Inst{7-0} = regs;
739 } // neverHasSideEffects
741 def : InstAlias<"ldm${p} $Rn!, $regs",
742 (tLDMIA tGPR:$Rn, pred:$p, reglist:$regs)>,
743 Requires<[IsThumb, IsThumb1Only]>;
745 let mayLoad = 1, Uses = [SP], Defs = [SP], hasExtraDefRegAllocReq = 1 in
746 def tPOP : T1I<(outs), (ins pred:$p, reglist:$regs, variable_ops),
748 "pop${p}\t$regs", []>,
749 T1Misc<{1,1,0,?,?,?,?}> {
751 let Inst{8} = regs{15};
752 let Inst{7-0} = regs{7-0};
755 let mayStore = 1, Uses = [SP], Defs = [SP], hasExtraSrcRegAllocReq = 1 in
756 def tPUSH : T1I<(outs), (ins pred:$p, reglist:$regs, variable_ops),
758 "push${p}\t$regs", []>,
759 T1Misc<{0,1,0,?,?,?,?}> {
761 let Inst{8} = regs{14};
762 let Inst{7-0} = regs{7-0};
765 //===----------------------------------------------------------------------===//
766 // Arithmetic Instructions.
769 // Helper classes for encoding T1pI patterns:
770 class T1pIDPEncode<bits<4> opA, dag oops, dag iops, InstrItinClass itin,
771 string opc, string asm, list<dag> pattern>
772 : T1pI<oops, iops, itin, opc, asm, pattern>,
773 T1DataProcessing<opA> {
779 class T1pIMiscEncode<bits<7> opA, dag oops, dag iops, InstrItinClass itin,
780 string opc, string asm, list<dag> pattern>
781 : T1pI<oops, iops, itin, opc, asm, pattern>,
789 // Helper classes for encoding T1sI patterns:
790 class T1sIDPEncode<bits<4> opA, dag oops, dag iops, InstrItinClass itin,
791 string opc, string asm, list<dag> pattern>
792 : T1sI<oops, iops, itin, opc, asm, pattern>,
793 T1DataProcessing<opA> {
799 class T1sIGenEncode<bits<5> opA, dag oops, dag iops, InstrItinClass itin,
800 string opc, string asm, list<dag> pattern>
801 : T1sI<oops, iops, itin, opc, asm, pattern>,
810 class T1sIGenEncodeImm<bits<5> opA, dag oops, dag iops, InstrItinClass itin,
811 string opc, string asm, list<dag> pattern>
812 : T1sI<oops, iops, itin, opc, asm, pattern>,
820 // Helper classes for encoding T1sIt patterns:
821 class T1sItDPEncode<bits<4> opA, dag oops, dag iops, InstrItinClass itin,
822 string opc, string asm, list<dag> pattern>
823 : T1sIt<oops, iops, itin, opc, asm, pattern>,
824 T1DataProcessing<opA> {
830 class T1sItGenEncodeImm<bits<5> opA, dag oops, dag iops, InstrItinClass itin,
831 string opc, string asm, list<dag> pattern>
832 : T1sIt<oops, iops, itin, opc, asm, pattern>,
836 let Inst{10-8} = Rdn;
837 let Inst{7-0} = imm8;
840 // Add with carry register
841 let isCommutable = 1, Uses = [CPSR] in
843 T1sItDPEncode<0b0101, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm), IIC_iALUr,
844 "adc", "\t$Rdn, $Rm",
845 [(set tGPR:$Rdn, (adde tGPR:$Rn, tGPR:$Rm))]>, Sched<[WriteALU]>;
848 def tADDi3 : // A8.6.4 T1
849 T1sIGenEncodeImm<0b01110, (outs tGPR:$Rd), (ins tGPR:$Rm, imm0_7:$imm3),
851 "add", "\t$Rd, $Rm, $imm3",
852 [(set tGPR:$Rd, (add tGPR:$Rm, imm0_7:$imm3))]>,
855 let Inst{8-6} = imm3;
858 def tADDi8 : // A8.6.4 T2
859 T1sItGenEncodeImm<{1,1,0,?,?}, (outs tGPR:$Rdn),
860 (ins tGPR:$Rn, imm0_255:$imm8), IIC_iALUi,
861 "add", "\t$Rdn, $imm8",
862 [(set tGPR:$Rdn, (add tGPR:$Rn, imm8_255:$imm8))]>,
866 let isCommutable = 1 in
867 def tADDrr : // A8.6.6 T1
868 T1sIGenEncode<0b01100, (outs tGPR:$Rd), (ins tGPR:$Rn, tGPR:$Rm),
870 "add", "\t$Rd, $Rn, $Rm",
871 [(set tGPR:$Rd, (add tGPR:$Rn, tGPR:$Rm))]>, Sched<[WriteALU]>;
873 let neverHasSideEffects = 1 in
874 def tADDhirr : T1pIt<(outs GPR:$Rdn), (ins GPR:$Rn, GPR:$Rm), IIC_iALUr,
875 "add", "\t$Rdn, $Rm", []>,
876 T1Special<{0,0,?,?}>, Sched<[WriteALU]> {
880 let Inst{7} = Rdn{3};
882 let Inst{2-0} = Rdn{2-0};
886 let isCommutable = 1 in
887 def tAND : // A8.6.12
888 T1sItDPEncode<0b0000, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
890 "and", "\t$Rdn, $Rm",
891 [(set tGPR:$Rdn, (and tGPR:$Rn, tGPR:$Rm))]>, Sched<[WriteALU]>;
894 def tASRri : // A8.6.14
895 T1sIGenEncodeImm<{0,1,0,?,?}, (outs tGPR:$Rd), (ins tGPR:$Rm, imm_sr:$imm5),
897 "asr", "\t$Rd, $Rm, $imm5",
898 [(set tGPR:$Rd, (sra tGPR:$Rm, (i32 imm_sr:$imm5)))]>,
901 let Inst{10-6} = imm5;
905 def tASRrr : // A8.6.15
906 T1sItDPEncode<0b0100, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
908 "asr", "\t$Rdn, $Rm",
909 [(set tGPR:$Rdn, (sra tGPR:$Rn, tGPR:$Rm))]>, Sched<[WriteALU]>;
912 def tBIC : // A8.6.20
913 T1sItDPEncode<0b1110, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
915 "bic", "\t$Rdn, $Rm",
916 [(set tGPR:$Rdn, (and tGPR:$Rn, (not tGPR:$Rm)))]>,
920 let isCompare = 1, Defs = [CPSR] in {
921 //FIXME: Disable CMN, as CCodes are backwards from compare expectations
922 // Compare-to-zero still works out, just not the relationals
923 //def tCMN : // A8.6.33
924 // T1pIDPEncode<0b1011, (outs), (ins tGPR:$lhs, tGPR:$rhs),
926 // "cmn", "\t$lhs, $rhs",
927 // [(ARMcmp tGPR:$lhs, (ineg tGPR:$rhs))]>;
929 def tCMNz : // A8.6.33
930 T1pIDPEncode<0b1011, (outs), (ins tGPR:$Rn, tGPR:$Rm),
933 [(ARMcmpZ tGPR:$Rn, (ineg tGPR:$Rm))]>, Sched<[WriteCMP]>;
935 } // isCompare = 1, Defs = [CPSR]
938 let isCompare = 1, Defs = [CPSR] in {
939 def tCMPi8 : T1pI<(outs), (ins tGPR:$Rn, imm0_255:$imm8), IIC_iCMPi,
940 "cmp", "\t$Rn, $imm8",
941 [(ARMcmp tGPR:$Rn, imm0_255:$imm8)]>,
942 T1General<{1,0,1,?,?}>, Sched<[WriteCMP]> {
947 let Inst{7-0} = imm8;
951 def tCMPr : // A8.6.36 T1
952 T1pIDPEncode<0b1010, (outs), (ins tGPR:$Rn, tGPR:$Rm),
955 [(ARMcmp tGPR:$Rn, tGPR:$Rm)]>, Sched<[WriteCMP]>;
957 def tCMPhir : T1pI<(outs), (ins GPR:$Rn, GPR:$Rm), IIC_iCMPr,
958 "cmp", "\t$Rn, $Rm", []>,
959 T1Special<{0,1,?,?}>, Sched<[WriteCMP]> {
965 let Inst{2-0} = Rn{2-0};
967 } // isCompare = 1, Defs = [CPSR]
971 let isCommutable = 1 in
972 def tEOR : // A8.6.45
973 T1sItDPEncode<0b0001, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
975 "eor", "\t$Rdn, $Rm",
976 [(set tGPR:$Rdn, (xor tGPR:$Rn, tGPR:$Rm))]>, Sched<[WriteALU]>;
979 def tLSLri : // A8.6.88
980 T1sIGenEncodeImm<{0,0,0,?,?}, (outs tGPR:$Rd), (ins tGPR:$Rm, imm0_31:$imm5),
982 "lsl", "\t$Rd, $Rm, $imm5",
983 [(set tGPR:$Rd, (shl tGPR:$Rm, (i32 imm:$imm5)))]>,
986 let Inst{10-6} = imm5;
990 def tLSLrr : // A8.6.89
991 T1sItDPEncode<0b0010, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
993 "lsl", "\t$Rdn, $Rm",
994 [(set tGPR:$Rdn, (shl tGPR:$Rn, tGPR:$Rm))]>, Sched<[WriteALU]>;
997 def tLSRri : // A8.6.90
998 T1sIGenEncodeImm<{0,0,1,?,?}, (outs tGPR:$Rd), (ins tGPR:$Rm, imm_sr:$imm5),
1000 "lsr", "\t$Rd, $Rm, $imm5",
1001 [(set tGPR:$Rd, (srl tGPR:$Rm, (i32 imm_sr:$imm5)))]>,
1004 let Inst{10-6} = imm5;
1008 def tLSRrr : // A8.6.91
1009 T1sItDPEncode<0b0011, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
1011 "lsr", "\t$Rdn, $Rm",
1012 [(set tGPR:$Rdn, (srl tGPR:$Rn, tGPR:$Rm))]>, Sched<[WriteALU]>;
1015 let isMoveImm = 1 in
1016 def tMOVi8 : T1sI<(outs tGPR:$Rd), (ins imm0_255:$imm8), IIC_iMOVi,
1017 "mov", "\t$Rd, $imm8",
1018 [(set tGPR:$Rd, imm0_255:$imm8)]>,
1019 T1General<{1,0,0,?,?}>, Sched<[WriteALU]> {
1023 let Inst{10-8} = Rd;
1024 let Inst{7-0} = imm8;
1026 // Because we have an explicit tMOVSr below, we need an alias to handle
1027 // the immediate "movs" form here. Blech.
1028 def : tInstAlias <"movs $Rdn, $imm",
1029 (tMOVi8 tGPR:$Rdn, CPSR, imm0_255:$imm, 14, 0)>;
1031 // A7-73: MOV(2) - mov setting flag.
1033 let neverHasSideEffects = 1 in {
1034 def tMOVr : Thumb1pI<(outs GPR:$Rd), (ins GPR:$Rm), AddrModeNone,
1036 "mov", "\t$Rd, $Rm", "", []>,
1037 T1Special<{1,0,?,?}>, Sched<[WriteALU]> {
1041 let Inst{7} = Rd{3};
1043 let Inst{2-0} = Rd{2-0};
1045 let Defs = [CPSR] in
1046 def tMOVSr : T1I<(outs tGPR:$Rd), (ins tGPR:$Rm), IIC_iMOVr,
1047 "movs\t$Rd, $Rm", []>, Encoding16, Sched<[WriteALU]> {
1051 let Inst{15-6} = 0b0000000000;
1055 } // neverHasSideEffects
1057 // Multiply register
1058 let isCommutable = 1 in
1059 def tMUL : // A8.6.105 T1
1060 Thumb1sI<(outs tGPR:$Rd), (ins tGPR:$Rn, tGPR:$Rm), AddrModeNone, 2,
1061 IIC_iMUL32, "mul", "\t$Rd, $Rn, $Rm", "$Rm = $Rd",
1062 [(set tGPR:$Rd, (mul tGPR:$Rn, tGPR:$Rm))]>,
1063 T1DataProcessing<0b1101> {
1068 let AsmMatchConverter = "cvtThumbMultiply";
1071 def :tInstAlias<"mul${s}${p} $Rdm, $Rn", (tMUL tGPR:$Rdm, s_cc_out:$s, tGPR:$Rn,
1074 // Move inverse register
1075 def tMVN : // A8.6.107
1076 T1sIDPEncode<0b1111, (outs tGPR:$Rd), (ins tGPR:$Rn), IIC_iMVNr,
1077 "mvn", "\t$Rd, $Rn",
1078 [(set tGPR:$Rd, (not tGPR:$Rn))]>, Sched<[WriteALU]>;
1080 // Bitwise or register
1081 let isCommutable = 1 in
1082 def tORR : // A8.6.114
1083 T1sItDPEncode<0b1100, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
1085 "orr", "\t$Rdn, $Rm",
1086 [(set tGPR:$Rdn, (or tGPR:$Rn, tGPR:$Rm))]>, Sched<[WriteALU]>;
1089 def tREV : // A8.6.134
1090 T1pIMiscEncode<{1,0,1,0,0,0,?}, (outs tGPR:$Rd), (ins tGPR:$Rm),
1092 "rev", "\t$Rd, $Rm",
1093 [(set tGPR:$Rd, (bswap tGPR:$Rm))]>,
1094 Requires<[IsThumb, IsThumb1Only, HasV6]>, Sched<[WriteALU]>;
1096 def tREV16 : // A8.6.135
1097 T1pIMiscEncode<{1,0,1,0,0,1,?}, (outs tGPR:$Rd), (ins tGPR:$Rm),
1099 "rev16", "\t$Rd, $Rm",
1100 [(set tGPR:$Rd, (rotr (bswap tGPR:$Rm), (i32 16)))]>,
1101 Requires<[IsThumb, IsThumb1Only, HasV6]>, Sched<[WriteALU]>;
1103 def tREVSH : // A8.6.136
1104 T1pIMiscEncode<{1,0,1,0,1,1,?}, (outs tGPR:$Rd), (ins tGPR:$Rm),
1106 "revsh", "\t$Rd, $Rm",
1107 [(set tGPR:$Rd, (sra (bswap tGPR:$Rm), (i32 16)))]>,
1108 Requires<[IsThumb, IsThumb1Only, HasV6]>, Sched<[WriteALU]>;
1110 // Rotate right register
1111 def tROR : // A8.6.139
1112 T1sItDPEncode<0b0111, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
1114 "ror", "\t$Rdn, $Rm",
1115 [(set tGPR:$Rdn, (rotr tGPR:$Rn, tGPR:$Rm))]>,
1119 def tRSB : // A8.6.141
1120 T1sIDPEncode<0b1001, (outs tGPR:$Rd), (ins tGPR:$Rn),
1122 "rsb", "\t$Rd, $Rn, #0",
1123 [(set tGPR:$Rd, (ineg tGPR:$Rn))]>, Sched<[WriteALU]>;
1125 // Subtract with carry register
1126 let Uses = [CPSR] in
1127 def tSBC : // A8.6.151
1128 T1sItDPEncode<0b0110, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
1130 "sbc", "\t$Rdn, $Rm",
1131 [(set tGPR:$Rdn, (sube tGPR:$Rn, tGPR:$Rm))]>,
1134 // Subtract immediate
1135 def tSUBi3 : // A8.6.210 T1
1136 T1sIGenEncodeImm<0b01111, (outs tGPR:$Rd), (ins tGPR:$Rm, imm0_7:$imm3),
1138 "sub", "\t$Rd, $Rm, $imm3",
1139 [(set tGPR:$Rd, (add tGPR:$Rm, imm0_7_neg:$imm3))]>,
1142 let Inst{8-6} = imm3;
1145 def tSUBi8 : // A8.6.210 T2
1146 T1sItGenEncodeImm<{1,1,1,?,?}, (outs tGPR:$Rdn),
1147 (ins tGPR:$Rn, imm0_255:$imm8), IIC_iALUi,
1148 "sub", "\t$Rdn, $imm8",
1149 [(set tGPR:$Rdn, (add tGPR:$Rn, imm8_255_neg:$imm8))]>,
1152 // Subtract register
1153 def tSUBrr : // A8.6.212
1154 T1sIGenEncode<0b01101, (outs tGPR:$Rd), (ins tGPR:$Rn, tGPR:$Rm),
1156 "sub", "\t$Rd, $Rn, $Rm",
1157 [(set tGPR:$Rd, (sub tGPR:$Rn, tGPR:$Rm))]>,
1161 def tSXTB : // A8.6.222
1162 T1pIMiscEncode<{0,0,1,0,0,1,?}, (outs tGPR:$Rd), (ins tGPR:$Rm),
1164 "sxtb", "\t$Rd, $Rm",
1165 [(set tGPR:$Rd, (sext_inreg tGPR:$Rm, i8))]>,
1166 Requires<[IsThumb, IsThumb1Only, HasV6]>,
1169 // Sign-extend short
1170 def tSXTH : // A8.6.224
1171 T1pIMiscEncode<{0,0,1,0,0,0,?}, (outs tGPR:$Rd), (ins tGPR:$Rm),
1173 "sxth", "\t$Rd, $Rm",
1174 [(set tGPR:$Rd, (sext_inreg tGPR:$Rm, i16))]>,
1175 Requires<[IsThumb, IsThumb1Only, HasV6]>,
1179 let isCompare = 1, isCommutable = 1, Defs = [CPSR] in
1180 def tTST : // A8.6.230
1181 T1pIDPEncode<0b1000, (outs), (ins tGPR:$Rn, tGPR:$Rm), IIC_iTSTr,
1182 "tst", "\t$Rn, $Rm",
1183 [(ARMcmpZ (and_su tGPR:$Rn, tGPR:$Rm), 0)]>,
1187 def tUXTB : // A8.6.262
1188 T1pIMiscEncode<{0,0,1,0,1,1,?}, (outs tGPR:$Rd), (ins tGPR:$Rm),
1190 "uxtb", "\t$Rd, $Rm",
1191 [(set tGPR:$Rd, (and tGPR:$Rm, 0xFF))]>,
1192 Requires<[IsThumb, IsThumb1Only, HasV6]>,
1195 // Zero-extend short
1196 def tUXTH : // A8.6.264
1197 T1pIMiscEncode<{0,0,1,0,1,0,?}, (outs tGPR:$Rd), (ins tGPR:$Rm),
1199 "uxth", "\t$Rd, $Rm",
1200 [(set tGPR:$Rd, (and tGPR:$Rm, 0xFFFF))]>,
1201 Requires<[IsThumb, IsThumb1Only, HasV6]>, Sched<[WriteALU]>;
1203 // Conditional move tMOVCCr - Used to implement the Thumb SELECT_CC operation.
1204 // Expanded after instruction selection into a branch sequence.
1205 let usesCustomInserter = 1 in // Expanded after instruction selection.
1206 def tMOVCCr_pseudo :
1207 PseudoInst<(outs tGPR:$dst), (ins tGPR:$false, tGPR:$true, cmovpred:$p),
1209 [(set tGPR:$dst, (ARMcmov tGPR:$false, tGPR:$true, cmovpred:$p))]>;
1211 // tLEApcrel - Load a pc-relative address into a register without offending the
1214 def tADR : T1I<(outs tGPR:$Rd), (ins t_adrlabel:$addr, pred:$p),
1215 IIC_iALUi, "adr{$p}\t$Rd, $addr", []>,
1216 T1Encoding<{1,0,1,0,0,?}>, Sched<[WriteALU]> {
1219 let Inst{10-8} = Rd;
1220 let Inst{7-0} = addr;
1221 let DecoderMethod = "DecodeThumbAddSpecialReg";
1224 let neverHasSideEffects = 1, isReMaterializable = 1 in
1225 def tLEApcrel : tPseudoInst<(outs tGPR:$Rd), (ins i32imm:$label, pred:$p),
1226 2, IIC_iALUi, []>, Sched<[WriteALU]>;
1228 let hasSideEffects = 1 in
1229 def tLEApcrelJT : tPseudoInst<(outs tGPR:$Rd),
1230 (ins i32imm:$label, nohash_imm:$id, pred:$p),
1231 2, IIC_iALUi, []>, Sched<[WriteALU]>;
1233 //===----------------------------------------------------------------------===//
1237 // __aeabi_read_tp preserves the registers r1-r3.
1238 // This is a pseudo inst so that we can get the encoding right,
1239 // complete with fixup for the aeabi_read_tp function.
1240 let isCall = 1, Defs = [R0, R12, LR, CPSR], Uses = [SP] in
1241 def tTPsoft : tPseudoInst<(outs), (ins), 4, IIC_Br,
1242 [(set R0, ARMthread_pointer)]>,
1245 //===----------------------------------------------------------------------===//
1246 // SJLJ Exception handling intrinsics
1249 // eh_sjlj_setjmp() is an instruction sequence to store the return address and
1250 // save #0 in R0 for the non-longjmp case. Since by its nature we may be coming
1251 // from some other function to get here, and we're using the stack frame for the
1252 // containing function to save/restore registers, we can't keep anything live in
1253 // regs across the eh_sjlj_setjmp(), else it will almost certainly have been
1254 // tromped upon when we get here from a longjmp(). We force everything out of
1255 // registers except for our own input by listing the relevant registers in
1256 // Defs. By doing so, we also cause the prologue/epilogue code to actively
1257 // preserve all of the callee-saved resgisters, which is exactly what we want.
1258 // $val is a scratch register for our use.
1259 let Defs = [ R0, R1, R2, R3, R4, R5, R6, R7, R12, CPSR ],
1260 hasSideEffects = 1, isBarrier = 1, isCodeGenOnly = 1,
1261 usesCustomInserter = 1 in
1262 def tInt_eh_sjlj_setjmp : ThumbXI<(outs),(ins tGPR:$src, tGPR:$val),
1263 AddrModeNone, 0, NoItinerary, "","",
1264 [(set R0, (ARMeh_sjlj_setjmp tGPR:$src, tGPR:$val))]>;
1266 // FIXME: Non-IOS version(s)
1267 let isBarrier = 1, hasSideEffects = 1, isTerminator = 1, isCodeGenOnly = 1,
1268 Defs = [ R7, LR, SP ] in
1269 def tInt_eh_sjlj_longjmp : XI<(outs), (ins GPR:$src, GPR:$scratch),
1270 AddrModeNone, 0, IndexModeNone,
1271 Pseudo, NoItinerary, "", "",
1272 [(ARMeh_sjlj_longjmp GPR:$src, GPR:$scratch)]>,
1273 Requires<[IsThumb, IsIOS]>;
1275 //===----------------------------------------------------------------------===//
1276 // Non-Instruction Patterns
1280 def : T1Pat<(ARMcmpZ tGPR:$Rn, imm0_255:$imm8),
1281 (tCMPi8 tGPR:$Rn, imm0_255:$imm8)>;
1282 def : T1Pat<(ARMcmpZ tGPR:$Rn, tGPR:$Rm),
1283 (tCMPr tGPR:$Rn, tGPR:$Rm)>;
1286 def : T1Pat<(addc tGPR:$lhs, imm0_7:$rhs),
1287 (tADDi3 tGPR:$lhs, imm0_7:$rhs)>;
1288 def : T1Pat<(addc tGPR:$lhs, imm8_255:$rhs),
1289 (tADDi8 tGPR:$lhs, imm8_255:$rhs)>;
1290 def : T1Pat<(addc tGPR:$lhs, tGPR:$rhs),
1291 (tADDrr tGPR:$lhs, tGPR:$rhs)>;
1293 // Subtract with carry
1294 def : T1Pat<(addc tGPR:$lhs, imm0_7_neg:$rhs),
1295 (tSUBi3 tGPR:$lhs, imm0_7_neg:$rhs)>;
1296 def : T1Pat<(addc tGPR:$lhs, imm8_255_neg:$rhs),
1297 (tSUBi8 tGPR:$lhs, imm8_255_neg:$rhs)>;
1298 def : T1Pat<(subc tGPR:$lhs, tGPR:$rhs),
1299 (tSUBrr tGPR:$lhs, tGPR:$rhs)>;
1301 // ConstantPool, GlobalAddress
1302 def : T1Pat<(ARMWrapper tglobaladdr :$dst), (tLEApcrel tglobaladdr :$dst)>;
1303 def : T1Pat<(ARMWrapper tconstpool :$dst), (tLEApcrel tconstpool :$dst)>;
1306 def : T1Pat<(ARMWrapperJT tjumptable:$dst, imm:$id),
1307 (tLEApcrelJT tjumptable:$dst, imm:$id)>;
1310 def : T1Pat<(ARMtcall texternalsym:$func), (tBL texternalsym:$func)>,
1311 Requires<[IsThumb]>;
1313 def : Tv5Pat<(ARMcall texternalsym:$func), (tBLXi texternalsym:$func)>,
1314 Requires<[IsThumb, HasV5T]>;
1316 // Indirect calls to ARM routines
1317 def : Tv5Pat<(ARMcall GPR:$dst), (tBLXr GPR:$dst)>,
1318 Requires<[IsThumb, HasV5T]>;
1320 // zextload i1 -> zextload i8
1321 def : T1Pat<(zextloadi1 t_addrmode_rrs1:$addr),
1322 (tLDRBr t_addrmode_rrs1:$addr)>;
1323 def : T1Pat<(zextloadi1 t_addrmode_is1:$addr),
1324 (tLDRBi t_addrmode_is1:$addr)>;
1326 // extload -> zextload
1327 def : T1Pat<(extloadi1 t_addrmode_rrs1:$addr), (tLDRBr t_addrmode_rrs1:$addr)>;
1328 def : T1Pat<(extloadi1 t_addrmode_is1:$addr), (tLDRBi t_addrmode_is1:$addr)>;
1329 def : T1Pat<(extloadi8 t_addrmode_rrs1:$addr), (tLDRBr t_addrmode_rrs1:$addr)>;
1330 def : T1Pat<(extloadi8 t_addrmode_is1:$addr), (tLDRBi t_addrmode_is1:$addr)>;
1331 def : T1Pat<(extloadi16 t_addrmode_rrs2:$addr), (tLDRHr t_addrmode_rrs2:$addr)>;
1332 def : T1Pat<(extloadi16 t_addrmode_is2:$addr), (tLDRHi t_addrmode_is2:$addr)>;
1334 // If it's impossible to use [r,r] address mode for sextload, select to
1335 // ldr{b|h} + sxt{b|h} instead.
1336 def : T1Pat<(sextloadi8 t_addrmode_is1:$addr),
1337 (tSXTB (tLDRBi t_addrmode_is1:$addr))>,
1338 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1339 def : T1Pat<(sextloadi8 t_addrmode_rrs1:$addr),
1340 (tSXTB (tLDRBr t_addrmode_rrs1:$addr))>,
1341 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1342 def : T1Pat<(sextloadi16 t_addrmode_is2:$addr),
1343 (tSXTH (tLDRHi t_addrmode_is2:$addr))>,
1344 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1345 def : T1Pat<(sextloadi16 t_addrmode_rrs2:$addr),
1346 (tSXTH (tLDRHr t_addrmode_rrs2:$addr))>,
1347 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1349 def : T1Pat<(sextloadi8 t_addrmode_rrs1:$addr),
1350 (tASRri (tLSLri (tLDRBr t_addrmode_rrs1:$addr), 24), 24)>;
1351 def : T1Pat<(sextloadi8 t_addrmode_is1:$addr),
1352 (tASRri (tLSLri (tLDRBi t_addrmode_is1:$addr), 24), 24)>;
1353 def : T1Pat<(sextloadi16 t_addrmode_rrs2:$addr),
1354 (tASRri (tLSLri (tLDRHr t_addrmode_rrs2:$addr), 16), 16)>;
1355 def : T1Pat<(sextloadi16 t_addrmode_is2:$addr),
1356 (tASRri (tLSLri (tLDRHi t_addrmode_is2:$addr), 16), 16)>;
1358 def : T1Pat<(atomic_load_8 t_addrmode_is1:$src),
1359 (tLDRBi t_addrmode_is1:$src)>;
1360 def : T1Pat<(atomic_load_8 t_addrmode_rrs1:$src),
1361 (tLDRBr t_addrmode_rrs1:$src)>;
1362 def : T1Pat<(atomic_load_16 t_addrmode_is2:$src),
1363 (tLDRHi t_addrmode_is2:$src)>;
1364 def : T1Pat<(atomic_load_16 t_addrmode_rrs2:$src),
1365 (tLDRHr t_addrmode_rrs2:$src)>;
1366 def : T1Pat<(atomic_load_32 t_addrmode_is4:$src),
1367 (tLDRi t_addrmode_is4:$src)>;
1368 def : T1Pat<(atomic_load_32 t_addrmode_rrs4:$src),
1369 (tLDRr t_addrmode_rrs4:$src)>;
1370 def : T1Pat<(atomic_store_8 t_addrmode_is1:$ptr, tGPR:$val),
1371 (tSTRBi tGPR:$val, t_addrmode_is1:$ptr)>;
1372 def : T1Pat<(atomic_store_8 t_addrmode_rrs1:$ptr, tGPR:$val),
1373 (tSTRBr tGPR:$val, t_addrmode_rrs1:$ptr)>;
1374 def : T1Pat<(atomic_store_16 t_addrmode_is2:$ptr, tGPR:$val),
1375 (tSTRHi tGPR:$val, t_addrmode_is2:$ptr)>;
1376 def : T1Pat<(atomic_store_16 t_addrmode_rrs2:$ptr, tGPR:$val),
1377 (tSTRHr tGPR:$val, t_addrmode_rrs2:$ptr)>;
1378 def : T1Pat<(atomic_store_32 t_addrmode_is4:$ptr, tGPR:$val),
1379 (tSTRi tGPR:$val, t_addrmode_is4:$ptr)>;
1380 def : T1Pat<(atomic_store_32 t_addrmode_rrs4:$ptr, tGPR:$val),
1381 (tSTRr tGPR:$val, t_addrmode_rrs4:$ptr)>;
1383 // Large immediate handling.
1386 def : T1Pat<(i32 thumb_immshifted:$src),
1387 (tLSLri (tMOVi8 (thumb_immshifted_val imm:$src)),
1388 (thumb_immshifted_shamt imm:$src))>;
1390 def : T1Pat<(i32 imm0_255_comp:$src),
1391 (tMVN (tMOVi8 (imm_comp_XFORM imm:$src)))>;
1393 // Pseudo instruction that combines ldr from constpool and add pc. This should
1394 // be expanded into two instructions late to allow if-conversion and
1396 let isReMaterializable = 1 in
1397 def tLDRpci_pic : PseudoInst<(outs GPR:$dst), (ins i32imm:$addr, pclabel:$cp),
1399 [(set GPR:$dst, (ARMpic_add (load (ARMWrapper tconstpool:$addr)),
1401 Requires<[IsThumb, IsThumb1Only]>;
1403 // Pseudo-instruction for merged POP and return.
1404 // FIXME: remove when we have a way to marking a MI with these properties.
1405 let isReturn = 1, isTerminator = 1, isBarrier = 1, mayLoad = 1,
1406 hasExtraDefRegAllocReq = 1 in
1407 def tPOP_RET : tPseudoExpand<(outs), (ins pred:$p, reglist:$regs, variable_ops),
1409 (tPOP pred:$p, reglist:$regs)>, Sched<[WriteBrL]>;
1411 // Indirect branch using "mov pc, $Rm"
1412 let isBranch = 1, isTerminator = 1, isBarrier = 1, isIndirectBranch = 1 in {
1413 def tBRIND : tPseudoExpand<(outs), (ins GPR:$Rm, pred:$p),
1414 2, IIC_Br, [(brind GPR:$Rm)],
1415 (tMOVr PC, GPR:$Rm, pred:$p)>, Sched<[WriteBr]>;
1419 // In Thumb1, "nop" is encoded as a "mov r8, r8". Technically, the bf00
1420 // encoding is available on ARMv6K, but we don't differentiate that finely.
1421 def : InstAlias<"nop", (tMOVr R8, R8, 14, 0)>,Requires<[IsThumb, IsThumb1Only]>;
1424 // For round-trip assembly/disassembly, we have to handle a CPS instruction
1425 // without any iflags. That's not, strictly speaking, valid syntax, but it's
1426 // a useful extension and assembles to defined behaviour (the insn does
1428 def : tInstAlias<"cps$imod", (tCPS imod_op:$imod, 0)>;
1429 def : tInstAlias<"cps$imod", (tCPS imod_op:$imod, 0)>;
1431 // "neg" is and alias for "rsb rd, rn, #0"
1432 def : tInstAlias<"neg${s}${p} $Rd, $Rm",
1433 (tRSB tGPR:$Rd, s_cc_out:$s, tGPR:$Rm, pred:$p)>;
1436 // Implied destination operand forms for shifts.
1437 def : tInstAlias<"lsl${s}${p} $Rdm, $imm",
1438 (tLSLri tGPR:$Rdm, cc_out:$s, tGPR:$Rdm, imm0_31:$imm, pred:$p)>;
1439 def : tInstAlias<"lsr${s}${p} $Rdm, $imm",
1440 (tLSRri tGPR:$Rdm, cc_out:$s, tGPR:$Rdm, imm_sr:$imm, pred:$p)>;
1441 def : tInstAlias<"asr${s}${p} $Rdm, $imm",
1442 (tASRri tGPR:$Rdm, cc_out:$s, tGPR:$Rdm, imm_sr:$imm, pred:$p)>;