1 //===-- ARMInstrThumb.td - Thumb support for ARM -----------*- tablegen -*-===//
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7 //===----------------------------------------------------------------------===//
9 // This file describes the Thumb instruction set.
11 //===----------------------------------------------------------------------===//
13 //===----------------------------------------------------------------------===//
14 // Thumb specific DAG Nodes.
17 def imm_sr_XFORM: SDNodeXForm<imm, [{
18 unsigned Imm = N->getZExtValue();
19 return CurDAG->getTargetConstant((Imm == 32 ? 0 : Imm), SDLoc(N), MVT::i32);
21 def ThumbSRImmAsmOperand: ImmAsmOperand<1,32> { let Name = "ImmThumbSR"; }
22 def imm_sr : Operand<i32>, PatLeaf<(imm), [{
23 uint64_t Imm = N->getZExtValue();
24 return Imm > 0 && Imm <= 32;
26 let PrintMethod = "printThumbSRImm";
27 let ParserMatchClass = ThumbSRImmAsmOperand;
30 def imm0_7_neg : PatLeaf<(i32 imm), [{
31 return (uint32_t)-N->getZExtValue() < 8;
34 def ThumbModImmNeg1_7AsmOperand : AsmOperandClass { let Name = "ThumbModImmNeg1_7"; }
35 def mod_imm1_7_neg : Operand<i32>, PatLeaf<(imm), [{
36 unsigned Value = -(unsigned)N->getZExtValue();
37 return 0 < Value && Value < 8;
39 let ParserMatchClass = ThumbModImmNeg1_7AsmOperand;
42 def ThumbModImmNeg8_255AsmOperand : AsmOperandClass { let Name = "ThumbModImmNeg8_255"; }
43 def mod_imm8_255_neg : Operand<i32>, PatLeaf<(imm), [{
44 unsigned Value = -(unsigned)N->getZExtValue();
45 return 7 < Value && Value < 256;
47 let ParserMatchClass = ThumbModImmNeg8_255AsmOperand;
51 def imm0_255_comp : PatLeaf<(i32 imm), [{
52 return ~((uint32_t)N->getZExtValue()) < 256;
55 def imm8_255_neg : PatLeaf<(i32 imm), [{
56 unsigned Val = -N->getZExtValue();
57 return Val >= 8 && Val < 256;
60 // Break imm's up into two pieces: an immediate + a left shift. This uses
61 // thumb_immshifted to match and thumb_immshifted_val and thumb_immshifted_shamt
62 // to get the val/shift pieces.
63 def thumb_immshifted : PatLeaf<(imm), [{
64 return ARM_AM::isThumbImmShiftedVal((unsigned)N->getZExtValue());
67 def thumb_immshifted_val : SDNodeXForm<imm, [{
68 unsigned V = ARM_AM::getThumbImmNonShiftedVal((unsigned)N->getZExtValue());
69 return CurDAG->getTargetConstant(V, SDLoc(N), MVT::i32);
72 def thumb_immshifted_shamt : SDNodeXForm<imm, [{
73 unsigned V = ARM_AM::getThumbImmValShift((unsigned)N->getZExtValue());
74 return CurDAG->getTargetConstant(V, SDLoc(N), MVT::i32);
77 def imm256_510 : ImmLeaf<i32, [{
78 return Imm >= 256 && Imm < 511;
81 def thumb_imm256_510_addend : SDNodeXForm<imm, [{
82 return CurDAG->getTargetConstant(N->getZExtValue() - 255, SDLoc(N), MVT::i32);
85 // Scaled 4 immediate.
86 def t_imm0_1020s4_asmoperand: AsmOperandClass { let Name = "Imm0_1020s4"; }
87 def t_imm0_1020s4 : Operand<i32> {
88 let PrintMethod = "printThumbS4ImmOperand";
89 let ParserMatchClass = t_imm0_1020s4_asmoperand;
90 let OperandType = "OPERAND_IMMEDIATE";
93 def t_imm0_508s4_asmoperand: AsmOperandClass { let Name = "Imm0_508s4"; }
94 def t_imm0_508s4 : Operand<i32> {
95 let PrintMethod = "printThumbS4ImmOperand";
96 let ParserMatchClass = t_imm0_508s4_asmoperand;
97 let OperandType = "OPERAND_IMMEDIATE";
99 // Alias use only, so no printer is necessary.
100 def t_imm0_508s4_neg_asmoperand: AsmOperandClass { let Name = "Imm0_508s4Neg"; }
101 def t_imm0_508s4_neg : Operand<i32> {
102 let ParserMatchClass = t_imm0_508s4_neg_asmoperand;
103 let OperandType = "OPERAND_IMMEDIATE";
106 // Define Thumb specific addressing modes.
108 // unsigned 8-bit, 2-scaled memory offset
109 class OperandUnsignedOffset_b8s2 : AsmOperandClass {
110 let Name = "UnsignedOffset_b8s2";
111 let PredicateMethod = "isUnsignedOffset<8, 2>";
114 def UnsignedOffset_b8s2 : OperandUnsignedOffset_b8s2;
116 // thumb style PC relative operand. signed, 8 bits magnitude,
117 // two bits shift. can be represented as either [pc, #imm], #imm,
118 // or relocatable expression...
119 def ThumbMemPC : AsmOperandClass {
120 let Name = "ThumbMemPC";
123 let OperandType = "OPERAND_PCREL" in {
124 def t_brtarget : Operand<OtherVT> {
125 let EncoderMethod = "getThumbBRTargetOpValue";
126 let DecoderMethod = "DecodeThumbBROperand";
129 // ADR instruction labels.
130 def t_adrlabel : Operand<i32> {
131 let EncoderMethod = "getThumbAdrLabelOpValue";
132 let PrintMethod = "printAdrLabelOperand<2>";
133 let ParserMatchClass = UnsignedOffset_b8s2;
137 def thumb_br_target : Operand<OtherVT> {
138 let ParserMatchClass = ThumbBranchTarget;
139 let EncoderMethod = "getThumbBranchTargetOpValue";
140 let OperandType = "OPERAND_PCREL";
143 def thumb_bl_target : Operand<i32> {
144 let ParserMatchClass = ThumbBranchTarget;
145 let EncoderMethod = "getThumbBLTargetOpValue";
146 let DecoderMethod = "DecodeThumbBLTargetOperand";
149 // Target for BLX *from* thumb mode.
150 def thumb_blx_target : Operand<i32> {
151 let ParserMatchClass = ARMBranchTarget;
152 let EncoderMethod = "getThumbBLXTargetOpValue";
153 let DecoderMethod = "DecodeThumbBLXOffset";
156 def thumb_bcc_target : Operand<OtherVT> {
157 let ParserMatchClass = ThumbBranchTarget;
158 let EncoderMethod = "getThumbBCCTargetOpValue";
159 let DecoderMethod = "DecodeThumbBCCTargetOperand";
162 def thumb_cb_target : Operand<OtherVT> {
163 let ParserMatchClass = ThumbBranchTarget;
164 let EncoderMethod = "getThumbCBTargetOpValue";
165 let DecoderMethod = "DecodeThumbCmpBROperand";
168 // t_addrmode_pc := <label> => pc + imm8 * 4
170 def t_addrmode_pc : MemOperand {
171 let EncoderMethod = "getAddrModePCOpValue";
172 let DecoderMethod = "DecodeThumbAddrModePC";
173 let PrintMethod = "printThumbLdrLabelOperand";
174 let ParserMatchClass = ThumbMemPC;
178 // t_addrmode_rr := reg + reg
180 def t_addrmode_rr_asm_operand : AsmOperandClass { let Name = "MemThumbRR"; }
181 def t_addrmode_rr : MemOperand,
182 ComplexPattern<i32, 2, "SelectThumbAddrModeRR", []> {
183 let EncoderMethod = "getThumbAddrModeRegRegOpValue";
184 let PrintMethod = "printThumbAddrModeRROperand";
185 let DecoderMethod = "DecodeThumbAddrModeRR";
186 let ParserMatchClass = t_addrmode_rr_asm_operand;
187 let MIOperandInfo = (ops tGPR:$base, tGPR:$offsreg);
190 // t_addrmode_rr_sext := reg + reg
192 // This is similar to t_addrmode_rr, but uses different heuristics for
194 def t_addrmode_rr_sext : MemOperand,
195 ComplexPattern<i32, 2, "SelectThumbAddrModeRRSext", []> {
196 let EncoderMethod = "getThumbAddrModeRegRegOpValue";
197 let PrintMethod = "printThumbAddrModeRROperand";
198 let DecoderMethod = "DecodeThumbAddrModeRR";
199 let ParserMatchClass = t_addrmode_rr_asm_operand;
200 let MIOperandInfo = (ops tGPR:$base, tGPR:$offsreg);
203 // t_addrmode_rrs := reg + reg
205 // We use separate scaled versions because the Select* functions need
206 // to explicitly check for a matching constant and return false here so that
207 // the reg+imm forms will match instead. This is a horrible way to do that,
208 // as it forces tight coupling between the methods, but it's how selectiondag
210 def t_addrmode_rrs1 : MemOperand,
211 ComplexPattern<i32, 2, "SelectThumbAddrModeRI5S1", []> {
212 let EncoderMethod = "getThumbAddrModeRegRegOpValue";
213 let PrintMethod = "printThumbAddrModeRROperand";
214 let DecoderMethod = "DecodeThumbAddrModeRR";
215 let ParserMatchClass = t_addrmode_rr_asm_operand;
216 let MIOperandInfo = (ops tGPR:$base, tGPR:$offsreg);
218 def t_addrmode_rrs2 : MemOperand,
219 ComplexPattern<i32, 2, "SelectThumbAddrModeRI5S2", []> {
220 let EncoderMethod = "getThumbAddrModeRegRegOpValue";
221 let DecoderMethod = "DecodeThumbAddrModeRR";
222 let PrintMethod = "printThumbAddrModeRROperand";
223 let ParserMatchClass = t_addrmode_rr_asm_operand;
224 let MIOperandInfo = (ops tGPR:$base, tGPR:$offsreg);
226 def t_addrmode_rrs4 : MemOperand,
227 ComplexPattern<i32, 2, "SelectThumbAddrModeRI5S4", []> {
228 let EncoderMethod = "getThumbAddrModeRegRegOpValue";
229 let DecoderMethod = "DecodeThumbAddrModeRR";
230 let PrintMethod = "printThumbAddrModeRROperand";
231 let ParserMatchClass = t_addrmode_rr_asm_operand;
232 let MIOperandInfo = (ops tGPR:$base, tGPR:$offsreg);
235 // t_addrmode_is4 := reg + imm5 * 4
237 def t_addrmode_is4_asm_operand : AsmOperandClass { let Name = "MemThumbRIs4"; }
238 def t_addrmode_is4 : MemOperand,
239 ComplexPattern<i32, 2, "SelectThumbAddrModeImm5S4", []> {
240 let EncoderMethod = "getAddrModeISOpValue";
241 let DecoderMethod = "DecodeThumbAddrModeIS";
242 let PrintMethod = "printThumbAddrModeImm5S4Operand";
243 let ParserMatchClass = t_addrmode_is4_asm_operand;
244 let MIOperandInfo = (ops tGPR:$base, i32imm:$offsimm);
247 // t_addrmode_is2 := reg + imm5 * 2
249 def t_addrmode_is2_asm_operand : AsmOperandClass { let Name = "MemThumbRIs2"; }
250 def t_addrmode_is2 : MemOperand,
251 ComplexPattern<i32, 2, "SelectThumbAddrModeImm5S2", []> {
252 let EncoderMethod = "getAddrModeISOpValue";
253 let DecoderMethod = "DecodeThumbAddrModeIS";
254 let PrintMethod = "printThumbAddrModeImm5S2Operand";
255 let ParserMatchClass = t_addrmode_is2_asm_operand;
256 let MIOperandInfo = (ops tGPR:$base, i32imm:$offsimm);
259 // t_addrmode_is1 := reg + imm5
261 def t_addrmode_is1_asm_operand : AsmOperandClass { let Name = "MemThumbRIs1"; }
262 def t_addrmode_is1 : MemOperand,
263 ComplexPattern<i32, 2, "SelectThumbAddrModeImm5S1", []> {
264 let EncoderMethod = "getAddrModeISOpValue";
265 let DecoderMethod = "DecodeThumbAddrModeIS";
266 let PrintMethod = "printThumbAddrModeImm5S1Operand";
267 let ParserMatchClass = t_addrmode_is1_asm_operand;
268 let MIOperandInfo = (ops tGPR:$base, i32imm:$offsimm);
271 // t_addrmode_sp := sp + imm8 * 4
273 // FIXME: This really shouldn't have an explicit SP operand at all. It should
274 // be implicit, just like in the instruction encoding itself.
275 def t_addrmode_sp_asm_operand : AsmOperandClass { let Name = "MemThumbSPI"; }
276 def t_addrmode_sp : MemOperand,
277 ComplexPattern<i32, 2, "SelectThumbAddrModeSP", []> {
278 let EncoderMethod = "getAddrModeThumbSPOpValue";
279 let DecoderMethod = "DecodeThumbAddrModeSP";
280 let PrintMethod = "printThumbAddrModeSPOperand";
281 let ParserMatchClass = t_addrmode_sp_asm_operand;
282 let MIOperandInfo = (ops GPR:$base, i32imm:$offsimm);
285 // Inspects parent to determine whether an or instruction can be implemented as
286 // an add (i.e. whether we know overflow won't occur in the add).
287 def AddLikeOrOp : ComplexPattern<i32, 1, "SelectAddLikeOr", [],
290 // Pattern to exclude immediates from matching
291 def non_imm32 : PatLeaf<(i32 GPR), [{ return !isa<ConstantSDNode>(N); }]>;
293 //===----------------------------------------------------------------------===//
294 // Miscellaneous Instructions.
297 // FIXME: Marking these as hasSideEffects is necessary to prevent machine DCE
298 // from removing one half of the matched pairs. That breaks PEI, which assumes
299 // these will always be in pairs, and asserts if it finds otherwise. Better way?
300 let Defs = [SP], Uses = [SP], hasSideEffects = 1 in {
301 def tADJCALLSTACKUP :
302 PseudoInst<(outs), (ins i32imm:$amt1, i32imm:$amt2), NoItinerary,
303 [(ARMcallseq_end imm:$amt1, imm:$amt2)]>,
304 Requires<[IsThumb, IsThumb1Only]>;
306 def tADJCALLSTACKDOWN :
307 PseudoInst<(outs), (ins i32imm:$amt, i32imm:$amt2), NoItinerary,
308 [(ARMcallseq_start imm:$amt, imm:$amt2)]>,
309 Requires<[IsThumb, IsThumb1Only]>;
312 class T1SystemEncoding<bits<8> opc>
313 : T1Encoding<0b101111> {
314 let Inst{9-8} = 0b11;
318 def tHINT : T1pI<(outs), (ins imm0_15:$imm), NoItinerary, "hint", "\t$imm",
319 [(int_arm_hint imm0_15:$imm)]>,
320 T1SystemEncoding<0x00>,
321 Requires<[IsThumb, HasV6M]> {
326 // Note: When EmitPriority == 1, the alias will be used for printing
327 class tHintAlias<string Asm, dag Result, bit EmitPriority = 0> : tInstAlias<Asm, Result, EmitPriority> {
328 let Predicates = [IsThumb, HasV6M];
331 def : tHintAlias<"nop$p", (tHINT 0, pred:$p), 1>; // A8.6.110
332 def : tHintAlias<"yield$p", (tHINT 1, pred:$p), 1>; // A8.6.410
333 def : tHintAlias<"wfe$p", (tHINT 2, pred:$p), 1>; // A8.6.408
334 def : tHintAlias<"wfi$p", (tHINT 3, pred:$p), 1>; // A8.6.409
335 def : tHintAlias<"sev$p", (tHINT 4, pred:$p), 1>; // A8.6.157
336 def : tInstAlias<"sevl$p", (tHINT 5, pred:$p), 1> {
337 let Predicates = [IsThumb2, HasV8];
340 // The imm operand $val can be used by a debugger to store more information
341 // about the breakpoint.
342 def tBKPT : T1I<(outs), (ins imm0_255:$val), NoItinerary, "bkpt\t$val",
344 T1Encoding<0b101111> {
345 let Inst{9-8} = 0b10;
350 // default immediate for breakpoint mnemonic
351 def : InstAlias<"bkpt", (tBKPT 0), 0>, Requires<[IsThumb]>;
353 def tHLT : T1I<(outs), (ins imm0_63:$val), NoItinerary, "hlt\t$val",
354 []>, T1Encoding<0b101110>, Requires<[IsThumb, HasV8]> {
355 let Inst{9-6} = 0b1010;
360 def tSETEND : T1I<(outs), (ins setend_op:$end), NoItinerary, "setend\t$end",
361 []>, T1Encoding<0b101101>, Requires<[IsThumb, IsNotMClass]>, Deprecated<HasV8Ops> {
364 let Inst{9-5} = 0b10010;
367 let Inst{2-0} = 0b000;
370 // Change Processor State is a system instruction -- for disassembly only.
371 def tCPS : T1I<(outs), (ins imod_op:$imod, iflags_op:$iflags),
372 NoItinerary, "cps$imod $iflags", []>,
380 let Inst{2-0} = iflags;
381 let DecoderMethod = "DecodeThumbCPS";
384 // For both thumb1 and thumb2.
385 let isNotDuplicable = 1, isCodeGenOnly = 1 in
386 def tPICADD : TIt<(outs GPR:$dst), (ins GPR:$lhs, pclabel:$cp), IIC_iALUr, "",
387 [(set GPR:$dst, (ARMpic_add GPR:$lhs, imm:$cp))]>,
388 T1Special<{0,0,?,?}>, Sched<[WriteALU]> {
391 let Inst{6-3} = 0b1111; // Rm = pc
395 // ADD <Rd>, sp, #<imm8>
396 // FIXME: This should not be marked as having side effects, and it should be
397 // rematerializable. Clearing the side effect bit causes miscompilations,
398 // probably because the instruction can be moved around.
399 def tADDrSPi : T1pI<(outs tGPR:$dst), (ins GPRsp:$sp, t_imm0_1020s4:$imm),
400 IIC_iALUi, "add", "\t$dst, $sp, $imm", []>,
401 T1Encoding<{1,0,1,0,1,?}>, Sched<[WriteALU]> {
405 let Inst{10-8} = dst;
407 let DecoderMethod = "DecodeThumbAddSpecialReg";
410 // Thumb1 frame lowering is rather fragile, we hope to be able to use
411 // tADDrSPi, but we may need to insert a sequence that clobbers CPSR.
412 def tADDframe : PseudoInst<(outs tGPR:$dst), (ins i32imm:$base, i32imm:$offset),
414 Requires<[IsThumb, IsThumb1Only]> {
418 // ADD sp, sp, #<imm7>
419 def tADDspi : T1pIt<(outs GPRsp:$Rdn), (ins GPRsp:$Rn, t_imm0_508s4:$imm),
420 IIC_iALUi, "add", "\t$Rdn, $imm", []>,
421 T1Misc<{0,0,0,0,0,?,?}>, Sched<[WriteALU]> {
425 let DecoderMethod = "DecodeThumbAddSPImm";
428 // SUB sp, sp, #<imm7>
429 // FIXME: The encoding and the ASM string don't match up.
430 def tSUBspi : T1pIt<(outs GPRsp:$Rdn), (ins GPRsp:$Rn, t_imm0_508s4:$imm),
431 IIC_iALUi, "sub", "\t$Rdn, $imm", []>,
432 T1Misc<{0,0,0,0,1,?,?}>, Sched<[WriteALU]> {
436 let DecoderMethod = "DecodeThumbAddSPImm";
439 def : tInstSubst<"add${p} sp, $imm",
440 (tSUBspi SP, t_imm0_508s4_neg:$imm, pred:$p)>;
441 def : tInstSubst<"add${p} sp, sp, $imm",
442 (tSUBspi SP, t_imm0_508s4_neg:$imm, pred:$p)>;
444 // Can optionally specify SP as a three operand instruction.
445 def : tInstAlias<"add${p} sp, sp, $imm",
446 (tADDspi SP, t_imm0_508s4:$imm, pred:$p)>;
447 def : tInstAlias<"sub${p} sp, sp, $imm",
448 (tSUBspi SP, t_imm0_508s4:$imm, pred:$p)>;
451 def tADDrSP : T1pI<(outs GPR:$Rdn), (ins GPRsp:$sp, GPR:$Rn), IIC_iALUr,
452 "add", "\t$Rdn, $sp, $Rn", []>,
453 T1Special<{0,0,?,?}>, Sched<[WriteALU]> {
454 // A8.6.9 Encoding T1
456 let Inst{7} = Rdn{3};
457 let Inst{6-3} = 0b1101;
458 let Inst{2-0} = Rdn{2-0};
459 let DecoderMethod = "DecodeThumbAddSPReg";
463 def tADDspr : T1pIt<(outs GPRsp:$Rdn), (ins GPRsp:$Rn, GPR:$Rm), IIC_iALUr,
464 "add", "\t$Rdn, $Rm", []>,
465 T1Special<{0,0,?,?}>, Sched<[WriteALU]> {
466 // A8.6.9 Encoding T2
470 let Inst{2-0} = 0b101;
471 let DecoderMethod = "DecodeThumbAddSPReg";
474 //===----------------------------------------------------------------------===//
475 // Control Flow Instructions.
479 let isBranch = 1, isTerminator = 1, isBarrier = 1, isIndirectBranch = 1 in {
480 def tBX : TI<(outs), (ins GPR:$Rm, pred:$p), IIC_Br, "bx${p}\t$Rm", []>,
481 T1Special<{1,1,0,?}>, Sched<[WriteBr]> {
485 let Inst{2-0} = 0b000;
486 let Unpredictable{2-0} = 0b111;
488 def tBXNS : TI<(outs), (ins GPR:$Rm, pred:$p), IIC_Br, "bxns${p}\t$Rm", []>,
489 Requires<[IsThumb, Has8MSecExt]>,
490 T1Special<{1,1,0,?}>, Sched<[WriteBr]> {
493 let Inst{2-0} = 0b100;
494 let Unpredictable{1-0} = 0b11;
498 let isReturn = 1, isTerminator = 1, isBarrier = 1 in {
499 def tBX_RET : tPseudoExpand<(outs), (ins pred:$p), 2, IIC_Br,
500 [(ARMretflag)], (tBX LR, pred:$p)>, Sched<[WriteBr]>;
502 // Alternative return instruction used by vararg functions.
503 def tBX_RET_vararg : tPseudoExpand<(outs), (ins tGPR:$Rm, pred:$p),
505 (tBX GPR:$Rm, pred:$p)>, Sched<[WriteBr]>;
508 // All calls clobber the non-callee saved registers. SP is marked as a use to
509 // prevent stack-pointer assignments that appear immediately before calls from
510 // potentially appearing dead.
512 Defs = [LR], Uses = [SP] in {
513 // Also used for Thumb2
514 def tBL : TIx2<0b11110, 0b11, 1,
515 (outs), (ins pred:$p, thumb_bl_target:$func), IIC_Br,
517 [(ARMcall tglobaladdr:$func)]>,
518 Requires<[IsThumb]>, Sched<[WriteBrL]> {
520 let Inst{26} = func{23};
521 let Inst{25-16} = func{20-11};
522 let Inst{13} = func{22};
523 let Inst{11} = func{21};
524 let Inst{10-0} = func{10-0};
527 // ARMv5T and above, also used for Thumb2
528 def tBLXi : TIx2<0b11110, 0b11, 0,
529 (outs), (ins pred:$p, thumb_blx_target:$func), IIC_Br,
530 "blx${p}\t$func", []>,
531 Requires<[IsThumb, HasV5T, IsNotMClass]>, Sched<[WriteBrL]> {
533 let Inst{26} = func{23};
534 let Inst{25-16} = func{20-11};
535 let Inst{13} = func{22};
536 let Inst{11} = func{21};
537 let Inst{10-1} = func{10-1};
538 let Inst{0} = 0; // func{0} is assumed zero
541 // Also used for Thumb2
542 def tBLXr : TI<(outs), (ins pred:$p, GPR:$func), IIC_Br,
544 [(ARMcall GPR:$func)]>,
545 Requires<[IsThumb, HasV5T]>,
546 T1Special<{1,1,1,?}>, Sched<[WriteBrL]> { // A6.2.3 & A8.6.24;
548 let Inst{6-3} = func;
549 let Inst{2-0} = 0b000;
552 // ARMv8-M Security Extensions
553 def tBLXNSr : TI<(outs), (ins pred:$p, GPRnopc:$func), IIC_Br,
554 "blxns${p}\t$func", []>,
555 Requires<[IsThumb, Has8MSecExt]>,
556 T1Special<{1,1,1,?}>, Sched<[WriteBrL]> {
558 let Inst{6-3} = func;
559 let Inst{2-0} = 0b100;
560 let Unpredictable{1-0} = 0b11;
564 def tBX_CALL : tPseudoInst<(outs), (ins tGPR:$func),
566 [(ARMcall_nolink tGPR:$func)]>,
567 Requires<[IsThumb, IsThumb1Only]>, Sched<[WriteBr]>;
570 let isBranch = 1, isTerminator = 1, isBarrier = 1 in {
571 let isPredicable = 1 in
572 def tB : T1pI<(outs), (ins t_brtarget:$target), IIC_Br,
573 "b", "\t$target", [(br bb:$target)]>,
574 T1Encoding<{1,1,1,0,0,?}>, Sched<[WriteBr]> {
576 let Inst{10-0} = target;
577 let AsmMatchConverter = "cvtThumbBranches";
581 // Just a pseudo for a tBL instruction. Needed to let regalloc know about
582 // the clobber of LR.
584 def tBfar : tPseudoExpand<(outs), (ins thumb_bl_target:$target, pred:$p),
586 (tBL pred:$p, thumb_bl_target:$target)>,
589 def tBR_JTr : tPseudoInst<(outs),
590 (ins tGPR:$target, i32imm:$jt),
592 [(ARMbrjt tGPR:$target, tjumptable:$jt)]>,
593 Sched<[WriteBrTbl]> {
595 list<Predicate> Predicates = [IsThumb, IsThumb1Only];
599 // FIXME: should be able to write a pattern for ARMBrcond, but can't use
600 // a two-value operand where a dag node expects two operands. :(
601 let isBranch = 1, isTerminator = 1 in
602 def tBcc : T1I<(outs), (ins thumb_bcc_target:$target, pred:$p), IIC_Br,
604 [/*(ARMbrcond bb:$target, imm:$cc)*/]>,
605 T1BranchCond<{1,1,0,1}>, Sched<[WriteBr]> {
609 let Inst{7-0} = target;
610 let AsmMatchConverter = "cvtThumbBranches";
615 let isCall = 1, isTerminator = 1, isReturn = 1, isBarrier = 1 in {
618 def tTAILJMPr : tPseudoExpand<(outs), (ins tcGPR:$dst),
620 (tBX GPR:$dst, (ops 14, zero_reg))>,
621 Requires<[IsThumb]>, Sched<[WriteBr]>;
623 // tTAILJMPd: MachO version uses a Thumb2 branch (no Thumb1 tail calls
624 // on MachO), so it's in ARMInstrThumb2.td.
625 // Non-MachO version:
627 def tTAILJMPdND : tPseudoExpand<(outs),
628 (ins t_brtarget:$dst, pred:$p),
630 (tB t_brtarget:$dst, pred:$p)>,
631 Requires<[IsThumb, IsNotMachO]>, Sched<[WriteBr]>;
636 // A8.6.218 Supervisor Call (Software Interrupt)
637 // A8.6.16 B: Encoding T1
638 // If Inst{11-8} == 0b1111 then SEE SVC
639 let isCall = 1, Uses = [SP] in
640 def tSVC : T1pI<(outs), (ins imm0_255:$imm), IIC_Br,
641 "svc", "\t$imm", []>, Encoding16, Sched<[WriteBr]> {
643 let Inst{15-12} = 0b1101;
644 let Inst{11-8} = 0b1111;
648 // The assembler uses 0xDEFE for a trap instruction.
649 let isBarrier = 1, isTerminator = 1 in
650 def tTRAP : TI<(outs), (ins), IIC_Br,
651 "trap", [(trap)]>, Encoding16, Sched<[WriteBr]> {
655 //===----------------------------------------------------------------------===//
656 // Load Store Instructions.
659 // PC-relative loads need to be matched first as constant pool accesses need to
660 // always be PC-relative. We do this using AddedComplexity, as the pattern is
661 // simpler than the patterns of the other load instructions.
662 let canFoldAsLoad = 1, isReMaterializable = 1, AddedComplexity = 10 in
663 def tLDRpci : T1pIs<(outs tGPR:$Rt), (ins t_addrmode_pc:$addr), IIC_iLoad_i,
664 "ldr", "\t$Rt, $addr",
665 [(set tGPR:$Rt, (load (ARMWrapper tconstpool:$addr)))]>,
666 T1Encoding<{0,1,0,0,1,?}>, Sched<[WriteLd]> {
671 let Inst{7-0} = addr;
674 // SP-relative loads should be matched before standard immediate-offset loads as
675 // it means we avoid having to move SP to another register.
676 let canFoldAsLoad = 1 in
677 def tLDRspi : T1pIs<(outs tGPR:$Rt), (ins t_addrmode_sp:$addr), IIC_iLoad_i,
678 "ldr", "\t$Rt, $addr",
679 [(set tGPR:$Rt, (load t_addrmode_sp:$addr))]>,
680 T1LdStSP<{1,?,?}>, Sched<[WriteLd]> {
684 let Inst{7-0} = addr;
687 // Loads: reg/reg and reg/imm5
688 let canFoldAsLoad = 1, isReMaterializable = 1 in
689 multiclass thumb_ld_rr_ri_enc<bits<3> reg_opc, bits<4> imm_opc,
690 Operand AddrMode_r, Operand AddrMode_i,
691 AddrMode am, InstrItinClass itin_r,
692 InstrItinClass itin_i, string asm,
694 // Immediate-offset loads should be matched before register-offset loads as
695 // when the offset is a constant it's simpler to first check if it fits in the
696 // immediate offset field then fall back to register-offset if it doesn't.
698 T1pILdStEncodeImm<imm_opc, 1 /* Load */,
699 (outs tGPR:$Rt), (ins AddrMode_i:$addr),
700 am, itin_i, asm, "\t$Rt, $addr",
701 [(set tGPR:$Rt, (opnode AddrMode_i:$addr))]>;
702 // Register-offset loads are matched last.
704 T1pILdStEncode<reg_opc,
705 (outs tGPR:$Rt), (ins AddrMode_r:$addr),
706 am, itin_r, asm, "\t$Rt, $addr",
707 [(set tGPR:$Rt, (opnode AddrMode_r:$addr))]>;
709 // Stores: reg/reg and reg/imm5
710 multiclass thumb_st_rr_ri_enc<bits<3> reg_opc, bits<4> imm_opc,
711 Operand AddrMode_r, Operand AddrMode_i,
712 AddrMode am, InstrItinClass itin_r,
713 InstrItinClass itin_i, string asm,
716 T1pILdStEncodeImm<imm_opc, 0 /* Store */,
717 (outs), (ins tGPR:$Rt, AddrMode_i:$addr),
718 am, itin_i, asm, "\t$Rt, $addr",
719 [(opnode tGPR:$Rt, AddrMode_i:$addr)]>;
721 T1pILdStEncode<reg_opc,
722 (outs), (ins tGPR:$Rt, AddrMode_r:$addr),
723 am, itin_r, asm, "\t$Rt, $addr",
724 [(opnode tGPR:$Rt, AddrMode_r:$addr)]>;
728 defm tLDR : thumb_ld_rr_ri_enc<0b100, 0b0110, t_addrmode_rr,
729 t_addrmode_is4, AddrModeT1_4,
730 IIC_iLoad_r, IIC_iLoad_i, "ldr",
731 load>, Sched<[WriteLd]>;
734 defm tLDRB : thumb_ld_rr_ri_enc<0b110, 0b0111, t_addrmode_rr,
735 t_addrmode_is1, AddrModeT1_1,
736 IIC_iLoad_bh_r, IIC_iLoad_bh_i, "ldrb",
737 zextloadi8>, Sched<[WriteLd]>;
740 defm tLDRH : thumb_ld_rr_ri_enc<0b101, 0b1000, t_addrmode_rr,
741 t_addrmode_is2, AddrModeT1_2,
742 IIC_iLoad_bh_r, IIC_iLoad_bh_i, "ldrh",
743 zextloadi16>, Sched<[WriteLd]>;
745 let AddedComplexity = 10 in
746 def tLDRSB : // A8.6.80
747 T1pILdStEncode<0b011, (outs tGPR:$Rt), (ins t_addrmode_rr_sext:$addr),
748 AddrModeT1_1, IIC_iLoad_bh_r,
749 "ldrsb", "\t$Rt, $addr",
750 [(set tGPR:$Rt, (sextloadi8 t_addrmode_rr_sext:$addr))]>, Sched<[WriteLd]>;
752 let AddedComplexity = 10 in
753 def tLDRSH : // A8.6.84
754 T1pILdStEncode<0b111, (outs tGPR:$Rt), (ins t_addrmode_rr_sext:$addr),
755 AddrModeT1_2, IIC_iLoad_bh_r,
756 "ldrsh", "\t$Rt, $addr",
757 [(set tGPR:$Rt, (sextloadi16 t_addrmode_rr_sext:$addr))]>, Sched<[WriteLd]>;
760 def tSTRspi : T1pIs<(outs), (ins tGPR:$Rt, t_addrmode_sp:$addr), IIC_iStore_i,
761 "str", "\t$Rt, $addr",
762 [(store tGPR:$Rt, t_addrmode_sp:$addr)]>,
763 T1LdStSP<{0,?,?}>, Sched<[WriteST]> {
767 let Inst{7-0} = addr;
770 // A8.6.194 & A8.6.192
771 defm tSTR : thumb_st_rr_ri_enc<0b000, 0b0110, t_addrmode_rr,
772 t_addrmode_is4, AddrModeT1_4,
773 IIC_iStore_r, IIC_iStore_i, "str",
774 store>, Sched<[WriteST]>;
776 // A8.6.197 & A8.6.195
777 defm tSTRB : thumb_st_rr_ri_enc<0b010, 0b0111, t_addrmode_rr,
778 t_addrmode_is1, AddrModeT1_1,
779 IIC_iStore_bh_r, IIC_iStore_bh_i, "strb",
780 truncstorei8>, Sched<[WriteST]>;
782 // A8.6.207 & A8.6.205
783 defm tSTRH : thumb_st_rr_ri_enc<0b001, 0b1000, t_addrmode_rr,
784 t_addrmode_is2, AddrModeT1_2,
785 IIC_iStore_bh_r, IIC_iStore_bh_i, "strh",
786 truncstorei16>, Sched<[WriteST]>;
789 //===----------------------------------------------------------------------===//
790 // Load / store multiple Instructions.
793 // These require base address to be written back or one of the loaded regs.
794 let hasSideEffects = 0 in {
796 let mayLoad = 1, hasExtraDefRegAllocReq = 1, variadicOpsAreDefs = 1 in
797 def tLDMIA : T1I<(outs), (ins tGPR:$Rn, pred:$p, reglist:$regs, variable_ops),
798 IIC_iLoad_m, "ldm${p}\t$Rn, $regs", []>, T1Encoding<{1,1,0,0,1,?}> {
802 let Inst{7-0} = regs;
805 // Writeback version is just a pseudo, as there's no encoding difference.
806 // Writeback happens iff the base register is not in the destination register
808 let mayLoad = 1, hasExtraDefRegAllocReq = 1 in
810 InstTemplate<AddrModeNone, 0, IndexModeNone, Pseudo, GenericDomain,
811 "$Rn = $wb", IIC_iLoad_mu>,
812 PseudoInstExpansion<(tLDMIA tGPR:$Rn, pred:$p, reglist:$regs)> {
814 let OutOperandList = (outs tGPR:$wb);
815 let InOperandList = (ins tGPR:$Rn, pred:$p, reglist:$regs, variable_ops);
817 let isCodeGenOnly = 1;
819 list<Predicate> Predicates = [IsThumb];
822 // There is no non-writeback version of STM for Thumb.
823 let mayStore = 1, hasExtraSrcRegAllocReq = 1 in
824 def tSTMIA_UPD : Thumb1I<(outs tGPR:$wb),
825 (ins tGPR:$Rn, pred:$p, reglist:$regs, variable_ops),
826 AddrModeNone, 2, IIC_iStore_mu,
827 "stm${p}\t$Rn!, $regs", "$Rn = $wb", []>,
828 T1Encoding<{1,1,0,0,0,?}> {
832 let Inst{7-0} = regs;
837 def : InstAlias<"ldm${p} $Rn!, $regs",
838 (tLDMIA tGPR:$Rn, pred:$p, reglist:$regs), 0>,
839 Requires<[IsThumb, IsThumb1Only]>;
841 let mayLoad = 1, Uses = [SP], Defs = [SP], hasExtraDefRegAllocReq = 1,
842 variadicOpsAreDefs = 1 in
843 def tPOP : T1I<(outs), (ins pred:$p, reglist:$regs, variable_ops),
845 "pop${p}\t$regs", []>,
846 T1Misc<{1,1,0,?,?,?,?}>, Sched<[WriteLd]> {
848 let Inst{8} = regs{15};
849 let Inst{7-0} = regs{7-0};
852 let mayStore = 1, Uses = [SP], Defs = [SP], hasExtraSrcRegAllocReq = 1 in
853 def tPUSH : T1I<(outs), (ins pred:$p, reglist:$regs, variable_ops),
855 "push${p}\t$regs", []>,
856 T1Misc<{0,1,0,?,?,?,?}>, Sched<[WriteST]> {
858 let Inst{8} = regs{14};
859 let Inst{7-0} = regs{7-0};
862 //===----------------------------------------------------------------------===//
863 // Arithmetic Instructions.
866 // Helper classes for encoding T1pI patterns:
867 class T1pIDPEncode<bits<4> opA, dag oops, dag iops, InstrItinClass itin,
868 string opc, string asm, list<dag> pattern>
869 : T1pI<oops, iops, itin, opc, asm, pattern>,
870 T1DataProcessing<opA> {
876 class T1pIMiscEncode<bits<7> opA, dag oops, dag iops, InstrItinClass itin,
877 string opc, string asm, list<dag> pattern>
878 : T1pI<oops, iops, itin, opc, asm, pattern>,
886 // Helper classes for encoding T1sI patterns:
887 class T1sIDPEncode<bits<4> opA, dag oops, dag iops, InstrItinClass itin,
888 string opc, string asm, list<dag> pattern>
889 : T1sI<oops, iops, itin, opc, asm, pattern>,
890 T1DataProcessing<opA> {
896 class T1sIGenEncode<bits<5> opA, dag oops, dag iops, InstrItinClass itin,
897 string opc, string asm, list<dag> pattern>
898 : T1sI<oops, iops, itin, opc, asm, pattern>,
907 class T1sIGenEncodeImm<bits<5> opA, dag oops, dag iops, InstrItinClass itin,
908 string opc, string asm, list<dag> pattern>
909 : T1sI<oops, iops, itin, opc, asm, pattern>,
917 // Helper classes for encoding T1sIt patterns:
918 class T1sItDPEncode<bits<4> opA, dag oops, dag iops, InstrItinClass itin,
919 string opc, string asm, list<dag> pattern>
920 : T1sIt<oops, iops, itin, opc, asm, pattern>,
921 T1DataProcessing<opA> {
927 class T1sItGenEncodeImm<bits<5> opA, dag oops, dag iops, InstrItinClass itin,
928 string opc, string asm, list<dag> pattern>
929 : T1sIt<oops, iops, itin, opc, asm, pattern>,
933 let Inst{10-8} = Rdn;
934 let Inst{7-0} = imm8;
938 // Add with carry register
939 let isCommutable = 1, Uses = [CPSR] in
941 T1sItDPEncode<0b0101, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm), IIC_iALUr,
942 "adc", "\t$Rdn, $Rm",
943 []>, Sched<[WriteALU]>;
946 def tADDi3 : // A8.6.4 T1
947 T1sIGenEncodeImm<0b01110, (outs tGPR:$Rd), (ins tGPR:$Rm, imm0_7:$imm3),
949 "add", "\t$Rd, $Rm, $imm3",
950 [(set tGPR:$Rd, (add tGPR:$Rm, imm0_7:$imm3))]>,
953 let Inst{8-6} = imm3;
956 def tADDi8 : // A8.6.4 T2
957 T1sItGenEncodeImm<{1,1,0,?,?}, (outs tGPR:$Rdn),
958 (ins tGPR:$Rn, imm0_255:$imm8), IIC_iALUi,
959 "add", "\t$Rdn, $imm8",
960 [(set tGPR:$Rdn, (add tGPR:$Rn, imm8_255:$imm8))]>,
964 let isCommutable = 1 in
965 def tADDrr : // A8.6.6 T1
966 T1sIGenEncode<0b01100, (outs tGPR:$Rd), (ins tGPR:$Rn, tGPR:$Rm),
968 "add", "\t$Rd, $Rn, $Rm",
969 [(set tGPR:$Rd, (add tGPR:$Rn, tGPR:$Rm))]>, Sched<[WriteALU]>;
971 /// Similar to the above except these set the 's' bit so the
972 /// instruction modifies the CPSR register.
974 /// These opcodes will be converted to the real non-S opcodes by
975 /// AdjustInstrPostInstrSelection after giving then an optional CPSR operand.
976 let hasPostISelHook = 1, Defs = [CPSR] in {
977 let isCommutable = 1, Uses = [CPSR] in
978 def tADCS : tPseudoInst<(outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
980 [(set tGPR:$Rdn, CPSR, (ARMadde tGPR:$Rn, tGPR:$Rm,
982 Requires<[IsThumb1Only]>,
985 def tADDSi3 : tPseudoInst<(outs tGPR:$Rd), (ins tGPR:$Rm, imm0_7:$imm3),
987 [(set tGPR:$Rd, CPSR, (ARMaddc tGPR:$Rm,
989 Requires<[IsThumb1Only]>,
992 def tADDSi8 : tPseudoInst<(outs tGPR:$Rdn), (ins tGPR:$Rn, imm0_255:$imm8),
994 [(set tGPR:$Rdn, CPSR, (ARMaddc tGPR:$Rn,
996 Requires<[IsThumb1Only]>,
999 let isCommutable = 1 in
1000 def tADDSrr : tPseudoInst<(outs tGPR:$Rd), (ins tGPR:$Rn, tGPR:$Rm),
1002 [(set tGPR:$Rd, CPSR, (ARMaddc tGPR:$Rn,
1004 Requires<[IsThumb1Only]>,
1008 let hasSideEffects = 0 in
1009 def tADDhirr : T1pIt<(outs GPR:$Rdn), (ins GPR:$Rn, GPR:$Rm), IIC_iALUr,
1010 "add", "\t$Rdn, $Rm", []>,
1011 T1Special<{0,0,?,?}>, Sched<[WriteALU]> {
1015 let Inst{7} = Rdn{3};
1017 let Inst{2-0} = Rdn{2-0};
1021 // Thumb has more flexible short encodings for ADD than ORR, so use those where
1023 def : T1Pat<(or AddLikeOrOp:$Rn, imm0_7:$imm), (tADDi3 $Rn, imm0_7:$imm)>;
1025 def : T1Pat<(or AddLikeOrOp:$Rn, imm8_255:$imm), (tADDi8 $Rn, imm8_255:$imm)>;
1027 def : T1Pat<(or AddLikeOrOp:$Rn, tGPR:$Rm), (tADDrr $Rn, $Rm)>;
1030 def : tInstAlias <"add${s}${p} $Rdn, $Rm",
1031 (tADDrr tGPR:$Rdn,s_cc_out:$s, tGPR:$Rdn, tGPR:$Rm, pred:$p)>;
1033 def : tInstSubst<"sub${s}${p} $rd, $rn, $imm",
1034 (tADDi3 tGPR:$rd, s_cc_out:$s, tGPR:$rn, mod_imm1_7_neg:$imm, pred:$p)>;
1035 def : tInstSubst<"sub${s}${p} $rdn, $imm",
1036 (tADDi8 tGPR:$rdn, s_cc_out:$s, mod_imm8_255_neg:$imm, pred:$p)>;
1040 let isCommutable = 1 in
1041 def tAND : // A8.6.12
1042 T1sItDPEncode<0b0000, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
1044 "and", "\t$Rdn, $Rm",
1045 [(set tGPR:$Rdn, (and tGPR:$Rn, tGPR:$Rm))]>, Sched<[WriteALU]>;
1048 def tASRri : // A8.6.14
1049 T1sIGenEncodeImm<{0,1,0,?,?}, (outs tGPR:$Rd), (ins tGPR:$Rm, imm_sr:$imm5),
1051 "asr", "\t$Rd, $Rm, $imm5",
1052 [(set tGPR:$Rd, (sra tGPR:$Rm, (i32 imm_sr:$imm5)))]>,
1055 let Inst{10-6} = imm5;
1059 def tASRrr : // A8.6.15
1060 T1sItDPEncode<0b0100, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
1062 "asr", "\t$Rdn, $Rm",
1063 [(set tGPR:$Rdn, (sra tGPR:$Rn, tGPR:$Rm))]>, Sched<[WriteALU]>;
1066 def tBIC : // A8.6.20
1067 T1sItDPEncode<0b1110, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
1069 "bic", "\t$Rdn, $Rm",
1070 [(set tGPR:$Rdn, (and tGPR:$Rn, (not tGPR:$Rm)))]>,
1074 let isCompare = 1, Defs = [CPSR] in {
1075 //FIXME: Disable CMN, as CCodes are backwards from compare expectations
1076 // Compare-to-zero still works out, just not the relationals
1077 //def tCMN : // A8.6.33
1078 // T1pIDPEncode<0b1011, (outs), (ins tGPR:$lhs, tGPR:$rhs),
1080 // "cmn", "\t$lhs, $rhs",
1081 // [(ARMcmp tGPR:$lhs, (ineg tGPR:$rhs))]>;
1083 def tCMNz : // A8.6.33
1084 T1pIDPEncode<0b1011, (outs), (ins tGPR:$Rn, tGPR:$Rm),
1086 "cmn", "\t$Rn, $Rm",
1087 [(ARMcmpZ tGPR:$Rn, (ineg tGPR:$Rm))]>, Sched<[WriteCMP]>;
1089 } // isCompare = 1, Defs = [CPSR]
1092 let isCompare = 1, Defs = [CPSR] in {
1093 def tCMPi8 : T1pI<(outs), (ins tGPR:$Rn, imm0_255:$imm8), IIC_iCMPi,
1094 "cmp", "\t$Rn, $imm8",
1095 [(ARMcmp tGPR:$Rn, imm0_255:$imm8)]>,
1096 T1General<{1,0,1,?,?}>, Sched<[WriteCMP]> {
1100 let Inst{10-8} = Rn;
1101 let Inst{7-0} = imm8;
1105 def tCMPr : // A8.6.36 T1
1106 T1pIDPEncode<0b1010, (outs), (ins tGPR:$Rn, tGPR:$Rm),
1108 "cmp", "\t$Rn, $Rm",
1109 [(ARMcmp tGPR:$Rn, tGPR:$Rm)]>, Sched<[WriteCMP]>;
1111 def tCMPhir : T1pI<(outs), (ins GPR:$Rn, GPR:$Rm), IIC_iCMPr,
1112 "cmp", "\t$Rn, $Rm", []>,
1113 T1Special<{0,1,?,?}>, Sched<[WriteCMP]> {
1117 let Inst{7} = Rn{3};
1119 let Inst{2-0} = Rn{2-0};
1121 } // isCompare = 1, Defs = [CPSR]
1125 let isCommutable = 1 in
1126 def tEOR : // A8.6.45
1127 T1sItDPEncode<0b0001, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
1129 "eor", "\t$Rdn, $Rm",
1130 [(set tGPR:$Rdn, (xor tGPR:$Rn, tGPR:$Rm))]>, Sched<[WriteALU]>;
1133 def tLSLri : // A8.6.88
1134 T1sIGenEncodeImm<{0,0,0,?,?}, (outs tGPR:$Rd), (ins tGPR:$Rm, imm0_31:$imm5),
1136 "lsl", "\t$Rd, $Rm, $imm5",
1137 [(set tGPR:$Rd, (shl tGPR:$Rm, (i32 imm:$imm5)))]>,
1140 let Inst{10-6} = imm5;
1144 def tLSLrr : // A8.6.89
1145 T1sItDPEncode<0b0010, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
1147 "lsl", "\t$Rdn, $Rm",
1148 [(set tGPR:$Rdn, (shl tGPR:$Rn, tGPR:$Rm))]>, Sched<[WriteALU]>;
1151 def tLSRri : // A8.6.90
1152 T1sIGenEncodeImm<{0,0,1,?,?}, (outs tGPR:$Rd), (ins tGPR:$Rm, imm_sr:$imm5),
1154 "lsr", "\t$Rd, $Rm, $imm5",
1155 [(set tGPR:$Rd, (srl tGPR:$Rm, (i32 imm_sr:$imm5)))]>,
1158 let Inst{10-6} = imm5;
1162 def tLSRrr : // A8.6.91
1163 T1sItDPEncode<0b0011, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
1165 "lsr", "\t$Rdn, $Rm",
1166 [(set tGPR:$Rdn, (srl tGPR:$Rn, tGPR:$Rm))]>, Sched<[WriteALU]>;
1169 let isMoveImm = 1 in
1170 def tMOVi8 : T1sI<(outs tGPR:$Rd), (ins imm0_255:$imm8), IIC_iMOVi,
1171 "mov", "\t$Rd, $imm8",
1172 [(set tGPR:$Rd, imm0_255:$imm8)]>,
1173 T1General<{1,0,0,?,?}>, Sched<[WriteALU]> {
1177 let Inst{10-8} = Rd;
1178 let Inst{7-0} = imm8;
1180 // Because we have an explicit tMOVSr below, we need an alias to handle
1181 // the immediate "movs" form here. Blech.
1182 def : tInstAlias <"movs $Rdn, $imm",
1183 (tMOVi8 tGPR:$Rdn, CPSR, imm0_255:$imm, 14, 0)>;
1185 // A7-73: MOV(2) - mov setting flag.
1187 let hasSideEffects = 0, isMoveReg = 1 in {
1188 def tMOVr : Thumb1pI<(outs GPR:$Rd), (ins GPR:$Rm), AddrModeNone,
1190 "mov", "\t$Rd, $Rm", "", []>,
1191 T1Special<{1,0,?,?}>, Sched<[WriteALU]> {
1195 let Inst{7} = Rd{3};
1197 let Inst{2-0} = Rd{2-0};
1199 let Defs = [CPSR] in
1200 def tMOVSr : T1I<(outs tGPR:$Rd), (ins tGPR:$Rm), IIC_iMOVr,
1201 "movs\t$Rd, $Rm", []>, Encoding16, Sched<[WriteALU]> {
1205 let Inst{15-6} = 0b0000000000;
1211 // Multiply register
1212 let isCommutable = 1 in
1213 def tMUL : // A8.6.105 T1
1214 Thumb1sI<(outs tGPR:$Rd), (ins tGPR:$Rn, tGPR:$Rm), AddrModeNone, 2,
1215 IIC_iMUL32, "mul", "\t$Rd, $Rn, $Rm", "$Rm = $Rd",
1216 [(set tGPR:$Rd, (mul tGPR:$Rn, tGPR:$Rm))]>,
1217 T1DataProcessing<0b1101>, Sched<[WriteMUL32, ReadMUL, ReadMUL]> {
1222 let AsmMatchConverter = "cvtThumbMultiply";
1225 def :tInstAlias<"mul${s}${p} $Rdm, $Rn", (tMUL tGPR:$Rdm, s_cc_out:$s, tGPR:$Rn,
1228 // Move inverse register
1229 def tMVN : // A8.6.107
1230 T1sIDPEncode<0b1111, (outs tGPR:$Rd), (ins tGPR:$Rn), IIC_iMVNr,
1231 "mvn", "\t$Rd, $Rn",
1232 [(set tGPR:$Rd, (not tGPR:$Rn))]>, Sched<[WriteALU]>;
1234 // Bitwise or register
1235 let isCommutable = 1 in
1236 def tORR : // A8.6.114
1237 T1sItDPEncode<0b1100, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
1239 "orr", "\t$Rdn, $Rm",
1240 [(set tGPR:$Rdn, (or tGPR:$Rn, tGPR:$Rm))]>, Sched<[WriteALU]>;
1243 def tREV : // A8.6.134
1244 T1pIMiscEncode<{1,0,1,0,0,0,?}, (outs tGPR:$Rd), (ins tGPR:$Rm),
1246 "rev", "\t$Rd, $Rm",
1247 [(set tGPR:$Rd, (bswap tGPR:$Rm))]>,
1248 Requires<[IsThumb, IsThumb1Only, HasV6]>, Sched<[WriteALU]>;
1250 def tREV16 : // A8.6.135
1251 T1pIMiscEncode<{1,0,1,0,0,1,?}, (outs tGPR:$Rd), (ins tGPR:$Rm),
1253 "rev16", "\t$Rd, $Rm",
1254 [(set tGPR:$Rd, (rotr (bswap tGPR:$Rm), (i32 16)))]>,
1255 Requires<[IsThumb, IsThumb1Only, HasV6]>, Sched<[WriteALU]>;
1257 def tREVSH : // A8.6.136
1258 T1pIMiscEncode<{1,0,1,0,1,1,?}, (outs tGPR:$Rd), (ins tGPR:$Rm),
1260 "revsh", "\t$Rd, $Rm",
1261 [(set tGPR:$Rd, (sra (bswap tGPR:$Rm), (i32 16)))]>,
1262 Requires<[IsThumb, IsThumb1Only, HasV6]>, Sched<[WriteALU]>;
1264 // Rotate right register
1265 def tROR : // A8.6.139
1266 T1sItDPEncode<0b0111, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
1268 "ror", "\t$Rdn, $Rm",
1269 [(set tGPR:$Rdn, (rotr tGPR:$Rn, tGPR:$Rm))]>,
1273 def tRSB : // A8.6.141
1274 T1sIDPEncode<0b1001, (outs tGPR:$Rd), (ins tGPR:$Rn),
1276 "rsb", "\t$Rd, $Rn, #0",
1277 [(set tGPR:$Rd, (ineg tGPR:$Rn))]>, Sched<[WriteALU]>;
1279 // Subtract with carry register
1280 let Uses = [CPSR] in
1281 def tSBC : // A8.6.151
1282 T1sItDPEncode<0b0110, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
1284 "sbc", "\t$Rdn, $Rm",
1288 // Subtract immediate
1289 def tSUBi3 : // A8.6.210 T1
1290 T1sIGenEncodeImm<0b01111, (outs tGPR:$Rd), (ins tGPR:$Rm, imm0_7:$imm3),
1292 "sub", "\t$Rd, $Rm, $imm3",
1293 [(set tGPR:$Rd, (add tGPR:$Rm, imm0_7_neg:$imm3))]>,
1296 let Inst{8-6} = imm3;
1299 def tSUBi8 : // A8.6.210 T2
1300 T1sItGenEncodeImm<{1,1,1,?,?}, (outs tGPR:$Rdn),
1301 (ins tGPR:$Rn, imm0_255:$imm8), IIC_iALUi,
1302 "sub", "\t$Rdn, $imm8",
1303 [(set tGPR:$Rdn, (add tGPR:$Rn, imm8_255_neg:$imm8))]>,
1306 def : tInstSubst<"add${s}${p} $rd, $rn, $imm",
1307 (tSUBi3 tGPR:$rd, s_cc_out:$s, tGPR:$rn, mod_imm1_7_neg:$imm, pred:$p)>;
1310 def : tInstSubst<"add${s}${p} $rdn, $imm",
1311 (tSUBi8 tGPR:$rdn, s_cc_out:$s, mod_imm8_255_neg:$imm, pred:$p)>;
1314 // Subtract register
1315 def tSUBrr : // A8.6.212
1316 T1sIGenEncode<0b01101, (outs tGPR:$Rd), (ins tGPR:$Rn, tGPR:$Rm),
1318 "sub", "\t$Rd, $Rn, $Rm",
1319 [(set tGPR:$Rd, (sub tGPR:$Rn, tGPR:$Rm))]>,
1322 def : tInstAlias <"sub${s}${p} $Rdn, $Rm",
1323 (tSUBrr tGPR:$Rdn,s_cc_out:$s, tGPR:$Rdn, tGPR:$Rm, pred:$p)>;
1325 /// Similar to the above except these set the 's' bit so the
1326 /// instruction modifies the CPSR register.
1328 /// These opcodes will be converted to the real non-S opcodes by
1329 /// AdjustInstrPostInstrSelection after giving then an optional CPSR operand.
1330 let hasPostISelHook = 1, Defs = [CPSR] in {
1331 let Uses = [CPSR] in
1332 def tSBCS : tPseudoInst<(outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
1334 [(set tGPR:$Rdn, CPSR, (ARMsube tGPR:$Rn, tGPR:$Rm,
1336 Requires<[IsThumb1Only]>,
1339 def tSUBSi3 : tPseudoInst<(outs tGPR:$Rd), (ins tGPR:$Rm, imm0_7:$imm3),
1341 [(set tGPR:$Rd, CPSR, (ARMsubc tGPR:$Rm,
1343 Requires<[IsThumb1Only]>,
1346 def tSUBSi8 : tPseudoInst<(outs tGPR:$Rdn), (ins tGPR:$Rn, imm0_255:$imm8),
1348 [(set tGPR:$Rdn, CPSR, (ARMsubc tGPR:$Rn,
1350 Requires<[IsThumb1Only]>,
1353 def tSUBSrr : tPseudoInst<(outs tGPR:$Rd), (ins tGPR:$Rn, tGPR:$Rm),
1355 [(set tGPR:$Rd, CPSR, (ARMsubc tGPR:$Rn,
1357 Requires<[IsThumb1Only]>,
1360 def tRSBS : tPseudoInst<(outs tGPR:$Rd), (ins tGPR:$Rn),
1362 [(set tGPR:$Rd, CPSR, (ARMsubc 0, tGPR:$Rn))]>,
1363 Requires<[IsThumb1Only]>,
1368 def : T1Pat<(ARMsubs tGPR:$Rn, tGPR:$Rm), (tSUBSrr $Rn, $Rm)>;
1369 def : T1Pat<(ARMsubs tGPR:$Rn, imm0_7:$imm3), (tSUBSi3 $Rn, imm0_7:$imm3)>;
1370 def : T1Pat<(ARMsubs tGPR:$Rn, imm0_255:$imm8), (tSUBSi8 $Rn, imm0_255:$imm8)>;
1374 def tSXTB : // A8.6.222
1375 T1pIMiscEncode<{0,0,1,0,0,1,?}, (outs tGPR:$Rd), (ins tGPR:$Rm),
1377 "sxtb", "\t$Rd, $Rm",
1378 [(set tGPR:$Rd, (sext_inreg tGPR:$Rm, i8))]>,
1379 Requires<[IsThumb, IsThumb1Only, HasV6]>,
1382 // Sign-extend short
1383 def tSXTH : // A8.6.224
1384 T1pIMiscEncode<{0,0,1,0,0,0,?}, (outs tGPR:$Rd), (ins tGPR:$Rm),
1386 "sxth", "\t$Rd, $Rm",
1387 [(set tGPR:$Rd, (sext_inreg tGPR:$Rm, i16))]>,
1388 Requires<[IsThumb, IsThumb1Only, HasV6]>,
1392 let isCompare = 1, isCommutable = 1, Defs = [CPSR] in
1393 def tTST : // A8.6.230
1394 T1pIDPEncode<0b1000, (outs), (ins tGPR:$Rn, tGPR:$Rm), IIC_iTSTr,
1395 "tst", "\t$Rn, $Rm",
1396 [(ARMcmpZ (and_su tGPR:$Rn, tGPR:$Rm), 0)]>,
1399 // A8.8.247 UDF - Undefined (Encoding T1)
1400 def tUDF : TI<(outs), (ins imm0_255:$imm8), IIC_Br, "udf\t$imm8",
1401 [(int_arm_undefined imm0_255:$imm8)]>, Encoding16 {
1403 let Inst{15-12} = 0b1101;
1404 let Inst{11-8} = 0b1110;
1405 let Inst{7-0} = imm8;
1408 def : Pat<(debugtrap), (tBKPT 0)>, Requires<[IsThumb, HasV5T]>;
1409 def : Pat<(debugtrap), (tUDF 254)>, Requires<[IsThumb, NoV5T]>;
1411 def t__brkdiv0 : TI<(outs), (ins), IIC_Br, "__brkdiv0",
1412 [(int_arm_undefined 249)]>, Encoding16,
1413 Requires<[IsThumb, IsWindows]> {
1415 let isTerminator = 1;
1419 def tUXTB : // A8.6.262
1420 T1pIMiscEncode<{0,0,1,0,1,1,?}, (outs tGPR:$Rd), (ins tGPR:$Rm),
1422 "uxtb", "\t$Rd, $Rm",
1423 [(set tGPR:$Rd, (and tGPR:$Rm, 0xFF))]>,
1424 Requires<[IsThumb, IsThumb1Only, HasV6]>,
1427 // Zero-extend short
1428 def tUXTH : // A8.6.264
1429 T1pIMiscEncode<{0,0,1,0,1,0,?}, (outs tGPR:$Rd), (ins tGPR:$Rm),
1431 "uxth", "\t$Rd, $Rm",
1432 [(set tGPR:$Rd, (and tGPR:$Rm, 0xFFFF))]>,
1433 Requires<[IsThumb, IsThumb1Only, HasV6]>, Sched<[WriteALU]>;
1435 // Conditional move tMOVCCr - Used to implement the Thumb SELECT_CC operation.
1436 // Expanded after instruction selection into a branch sequence.
1437 let usesCustomInserter = 1 in // Expanded after instruction selection.
1438 def tMOVCCr_pseudo :
1439 PseudoInst<(outs tGPR:$dst), (ins tGPR:$false, tGPR:$true, cmovpred:$p),
1441 [(set tGPR:$dst, (ARMcmov tGPR:$false, tGPR:$true, cmovpred:$p))]>;
1443 // tLEApcrel - Load a pc-relative address into a register without offending the
1446 def tADR : T1I<(outs tGPR:$Rd), (ins t_adrlabel:$addr, pred:$p),
1447 IIC_iALUi, "adr{$p}\t$Rd, $addr", []>,
1448 T1Encoding<{1,0,1,0,0,?}>, Sched<[WriteALU]> {
1451 let Inst{10-8} = Rd;
1452 let Inst{7-0} = addr;
1453 let DecoderMethod = "DecodeThumbAddSpecialReg";
1456 let hasSideEffects = 0, isReMaterializable = 1 in
1457 def tLEApcrel : tPseudoInst<(outs tGPR:$Rd), (ins i32imm:$label, pred:$p),
1458 2, IIC_iALUi, []>, Sched<[WriteALU]>;
1460 let hasSideEffects = 1 in
1461 def tLEApcrelJT : tPseudoInst<(outs tGPR:$Rd),
1462 (ins i32imm:$label, pred:$p),
1463 2, IIC_iALUi, []>, Sched<[WriteALU]>;
1465 // Thumb-1 doesn't have the TBB or TBH instructions, but we can synthesize them
1466 // and make use of the same compressed jump table format as Thumb-2.
1467 let Size = 2, isBranch = 1, isTerminator = 1, isBarrier = 1,
1468 isIndirectBranch = 1 in {
1469 def tTBB_JT : tPseudoInst<(outs),
1470 (ins tGPRwithpc:$base, tGPR:$index, i32imm:$jt, i32imm:$pclbl), 0,
1471 IIC_Br, []>, Sched<[WriteBr]>;
1473 def tTBH_JT : tPseudoInst<(outs),
1474 (ins tGPRwithpc:$base, tGPR:$index, i32imm:$jt, i32imm:$pclbl), 0,
1475 IIC_Br, []>, Sched<[WriteBr]>;
1478 //===----------------------------------------------------------------------===//
1482 // __aeabi_read_tp preserves the registers r1-r3.
1483 // This is a pseudo inst so that we can get the encoding right,
1484 // complete with fixup for the aeabi_read_tp function.
1485 let isCall = 1, Defs = [R0, R12, LR, CPSR], Uses = [SP] in
1486 def tTPsoft : tPseudoInst<(outs), (ins), 4, IIC_Br,
1487 [(set R0, ARMthread_pointer)]>,
1490 //===----------------------------------------------------------------------===//
1491 // SJLJ Exception handling intrinsics
1494 // eh_sjlj_setjmp() is an instruction sequence to store the return address and
1495 // save #0 in R0 for the non-longjmp case. Since by its nature we may be coming
1496 // from some other function to get here, and we're using the stack frame for the
1497 // containing function to save/restore registers, we can't keep anything live in
1498 // regs across the eh_sjlj_setjmp(), else it will almost certainly have been
1499 // tromped upon when we get here from a longjmp(). We force everything out of
1500 // registers except for our own input by listing the relevant registers in
1501 // Defs. By doing so, we also cause the prologue/epilogue code to actively
1502 // preserve all of the callee-saved resgisters, which is exactly what we want.
1503 // $val is a scratch register for our use.
1504 let Defs = [ R0, R1, R2, R3, R4, R5, R6, R7, R12, CPSR ],
1505 hasSideEffects = 1, isBarrier = 1, isCodeGenOnly = 1,
1506 usesCustomInserter = 1 in
1507 def tInt_eh_sjlj_setjmp : ThumbXI<(outs),(ins tGPR:$src, tGPR:$val),
1508 AddrModeNone, 0, NoItinerary, "","",
1509 [(set R0, (ARMeh_sjlj_setjmp tGPR:$src, tGPR:$val))]>;
1511 // FIXME: Non-IOS version(s)
1512 let isBarrier = 1, hasSideEffects = 1, isTerminator = 1, isCodeGenOnly = 1,
1513 Defs = [ R7, LR, SP ] in
1514 def tInt_eh_sjlj_longjmp : XI<(outs), (ins tGPR:$src, tGPR:$scratch),
1515 AddrModeNone, 0, IndexModeNone,
1516 Pseudo, NoItinerary, "", "",
1517 [(ARMeh_sjlj_longjmp tGPR:$src, tGPR:$scratch)]>,
1518 Requires<[IsThumb,IsNotWindows]>;
1520 // (Windows is Thumb2-only)
1521 let isBarrier = 1, hasSideEffects = 1, isTerminator = 1, isCodeGenOnly = 1,
1522 Defs = [ R11, LR, SP ] in
1523 def tInt_WIN_eh_sjlj_longjmp
1524 : XI<(outs), (ins GPR:$src, GPR:$scratch), AddrModeNone, 0, IndexModeNone,
1525 Pseudo, NoItinerary, "", "", [(ARMeh_sjlj_longjmp GPR:$src, GPR:$scratch)]>,
1526 Requires<[IsThumb,IsWindows]>;
1528 //===----------------------------------------------------------------------===//
1529 // Non-Instruction Patterns
1533 def : T1Pat<(ARMcmpZ tGPR:$Rn, imm0_255:$imm8),
1534 (tCMPi8 tGPR:$Rn, imm0_255:$imm8)>;
1535 def : T1Pat<(ARMcmpZ tGPR:$Rn, tGPR:$Rm),
1536 (tCMPr tGPR:$Rn, tGPR:$Rm)>;
1538 // Bswap 16 with load/store
1539 def : T1Pat<(srl (bswap (extloadi16 t_addrmode_is2:$addr)), (i32 16)),
1540 (tREV16 (tLDRHi t_addrmode_is2:$addr))>;
1541 def : T1Pat<(srl (bswap (extloadi16 t_addrmode_rr:$addr)), (i32 16)),
1542 (tREV16 (tLDRHr t_addrmode_rr:$addr))>;
1543 def : T1Pat<(truncstorei16 (srl (bswap tGPR:$Rn), (i32 16)),
1544 t_addrmode_is2:$addr),
1545 (tSTRHi(tREV16 tGPR:$Rn), t_addrmode_is2:$addr)>;
1546 def : T1Pat<(truncstorei16 (srl (bswap tGPR:$Rn), (i32 16)),
1547 t_addrmode_rr:$addr),
1548 (tSTRHr (tREV16 tGPR:$Rn), t_addrmode_rr:$addr)>;
1551 def : T1Pat<(ARMWrapper tconstpool :$dst), (tLEApcrel tconstpool :$dst)>;
1554 def tLDRLIT_ga_pcrel : PseudoInst<(outs tGPR:$dst), (ins i32imm:$addr),
1557 (ARMWrapperPIC tglobaladdr:$addr))]>,
1558 Requires<[IsThumb, DontUseMovtInPic]>;
1560 def tLDRLIT_ga_abs : PseudoInst<(outs tGPR:$dst), (ins i32imm:$src),
1563 (ARMWrapper tglobaladdr:$src))]>,
1564 Requires<[IsThumb, DontUseMovt]>;
1567 def : Pat<(ARMWrapperPIC tglobaltlsaddr:$addr),
1568 (tLDRLIT_ga_pcrel tglobaltlsaddr:$addr)>,
1569 Requires<[IsThumb, DontUseMovtInPic]>;
1570 def : Pat<(ARMWrapper tglobaltlsaddr:$addr),
1571 (tLDRLIT_ga_abs tglobaltlsaddr:$addr)>,
1572 Requires<[IsThumb, DontUseMovt]>;
1576 def : T1Pat<(ARMWrapperJT tjumptable:$dst),
1577 (tLEApcrelJT tjumptable:$dst)>;
1580 def : T1Pat<(ARMcall texternalsym:$func), (tBL texternalsym:$func)>,
1581 Requires<[IsThumb]>;
1583 // zextload i1 -> zextload i8
1584 def : T1Pat<(zextloadi1 t_addrmode_is1:$addr),
1585 (tLDRBi t_addrmode_is1:$addr)>;
1586 def : T1Pat<(zextloadi1 t_addrmode_rr:$addr),
1587 (tLDRBr t_addrmode_rr:$addr)>;
1589 // extload from the stack -> word load from the stack, as it avoids having to
1590 // materialize the base in a separate register. This only works when a word
1591 // load puts the byte/halfword value in the same place in the register that the
1592 // byte/halfword load would, i.e. when little-endian.
1593 def : T1Pat<(extloadi1 t_addrmode_sp:$addr), (tLDRspi t_addrmode_sp:$addr)>,
1594 Requires<[IsThumb, IsThumb1Only, IsLE]>;
1595 def : T1Pat<(extloadi8 t_addrmode_sp:$addr), (tLDRspi t_addrmode_sp:$addr)>,
1596 Requires<[IsThumb, IsThumb1Only, IsLE]>;
1597 def : T1Pat<(extloadi16 t_addrmode_sp:$addr), (tLDRspi t_addrmode_sp:$addr)>,
1598 Requires<[IsThumb, IsThumb1Only, IsLE]>;
1600 // extload -> zextload
1601 def : T1Pat<(extloadi1 t_addrmode_is1:$addr), (tLDRBi t_addrmode_is1:$addr)>;
1602 def : T1Pat<(extloadi1 t_addrmode_rr:$addr), (tLDRBr t_addrmode_rr:$addr)>;
1603 def : T1Pat<(extloadi8 t_addrmode_is1:$addr), (tLDRBi t_addrmode_is1:$addr)>;
1604 def : T1Pat<(extloadi8 t_addrmode_rr:$addr), (tLDRBr t_addrmode_rr:$addr)>;
1605 def : T1Pat<(extloadi16 t_addrmode_is2:$addr), (tLDRHi t_addrmode_is2:$addr)>;
1606 def : T1Pat<(extloadi16 t_addrmode_rr:$addr), (tLDRHr t_addrmode_rr:$addr)>;
1608 // post-inc loads and stores
1610 // post-inc LDR -> LDM r0!, {r1}. The way operands are layed out in LDMs is
1611 // different to how ISel expects them for a post-inc load, so use a pseudo
1612 // and expand it just after ISel.
1613 let usesCustomInserter = 1, mayLoad =1,
1614 Constraints = "$Rn = $Rn_wb,@earlyclobber $Rn_wb" in
1615 def tLDR_postidx: tPseudoInst<(outs tGPR:$Rt, tGPR:$Rn_wb),
1616 (ins tGPR:$Rn, pred:$p),
1620 // post-inc STR -> STM r0!, {r1}. The layout of this (because it doesn't def
1621 // multiple registers) is the same in ISel as MachineInstr, so there's no need
1623 def : T1Pat<(post_store tGPR:$Rt, tGPR:$Rn, 4),
1624 (tSTMIA_UPD tGPR:$Rn, tGPR:$Rt)>;
1626 // If it's impossible to use [r,r] address mode for sextload, select to
1627 // ldr{b|h} + sxt{b|h} instead.
1628 def : T1Pat<(sextloadi8 t_addrmode_is1:$addr),
1629 (tSXTB (tLDRBi t_addrmode_is1:$addr))>,
1630 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1631 def : T1Pat<(sextloadi8 t_addrmode_rr:$addr),
1632 (tSXTB (tLDRBr t_addrmode_rr:$addr))>,
1633 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1634 def : T1Pat<(sextloadi16 t_addrmode_is2:$addr),
1635 (tSXTH (tLDRHi t_addrmode_is2:$addr))>,
1636 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1637 def : T1Pat<(sextloadi16 t_addrmode_rr:$addr),
1638 (tSXTH (tLDRHr t_addrmode_rr:$addr))>,
1639 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1641 def : T1Pat<(sextloadi8 t_addrmode_is1:$addr),
1642 (tASRri (tLSLri (tLDRBi t_addrmode_is1:$addr), 24), 24)>;
1643 def : T1Pat<(sextloadi8 t_addrmode_rr:$addr),
1644 (tASRri (tLSLri (tLDRBr t_addrmode_rr:$addr), 24), 24)>;
1645 def : T1Pat<(sextloadi16 t_addrmode_is2:$addr),
1646 (tASRri (tLSLri (tLDRHi t_addrmode_is2:$addr), 16), 16)>;
1647 def : T1Pat<(sextloadi16 t_addrmode_rr:$addr),
1648 (tASRri (tLSLri (tLDRHr t_addrmode_rr:$addr), 16), 16)>;
1650 def : T1Pat<(atomic_load_8 t_addrmode_is1:$src),
1651 (tLDRBi t_addrmode_is1:$src)>;
1652 def : T1Pat<(atomic_load_8 t_addrmode_rr:$src),
1653 (tLDRBr t_addrmode_rr:$src)>;
1654 def : T1Pat<(atomic_load_16 t_addrmode_is2:$src),
1655 (tLDRHi t_addrmode_is2:$src)>;
1656 def : T1Pat<(atomic_load_16 t_addrmode_rr:$src),
1657 (tLDRHr t_addrmode_rr:$src)>;
1658 def : T1Pat<(atomic_load_32 t_addrmode_is4:$src),
1659 (tLDRi t_addrmode_is4:$src)>;
1660 def : T1Pat<(atomic_load_32 t_addrmode_rr:$src),
1661 (tLDRr t_addrmode_rr:$src)>;
1662 def : T1Pat<(atomic_store_8 t_addrmode_is1:$ptr, tGPR:$val),
1663 (tSTRBi tGPR:$val, t_addrmode_is1:$ptr)>;
1664 def : T1Pat<(atomic_store_8 t_addrmode_rr:$ptr, tGPR:$val),
1665 (tSTRBr tGPR:$val, t_addrmode_rr:$ptr)>;
1666 def : T1Pat<(atomic_store_16 t_addrmode_is2:$ptr, tGPR:$val),
1667 (tSTRHi tGPR:$val, t_addrmode_is2:$ptr)>;
1668 def : T1Pat<(atomic_store_16 t_addrmode_rr:$ptr, tGPR:$val),
1669 (tSTRHr tGPR:$val, t_addrmode_rr:$ptr)>;
1670 def : T1Pat<(atomic_store_32 t_addrmode_is4:$ptr, tGPR:$val),
1671 (tSTRi tGPR:$val, t_addrmode_is4:$ptr)>;
1672 def : T1Pat<(atomic_store_32 t_addrmode_rr:$ptr, tGPR:$val),
1673 (tSTRr tGPR:$val, t_addrmode_rr:$ptr)>;
1675 // Large immediate handling.
1678 def : T1Pat<(i32 thumb_immshifted:$src),
1679 (tLSLri (tMOVi8 (thumb_immshifted_val imm:$src)),
1680 (thumb_immshifted_shamt imm:$src))>;
1682 def : T1Pat<(i32 imm0_255_comp:$src),
1683 (tMVN (tMOVi8 (imm_not_XFORM imm:$src)))>;
1685 def : T1Pat<(i32 imm256_510:$src),
1686 (tADDi8 (tMOVi8 255),
1687 (thumb_imm256_510_addend imm:$src))>;
1689 // Pseudo instruction that combines ldr from constpool and add pc. This should
1690 // be expanded into two instructions late to allow if-conversion and
1692 let isReMaterializable = 1 in
1693 def tLDRpci_pic : PseudoInst<(outs tGPR:$dst), (ins i32imm:$addr, pclabel:$cp),
1695 [(set tGPR:$dst, (ARMpic_add (load (ARMWrapper tconstpool:$addr)),
1697 Requires<[IsThumb, IsThumb1Only]>;
1699 // Pseudo-instruction for merged POP and return.
1700 // FIXME: remove when we have a way to marking a MI with these properties.
1701 let isReturn = 1, isTerminator = 1, isBarrier = 1, mayLoad = 1,
1702 hasExtraDefRegAllocReq = 1 in
1703 def tPOP_RET : tPseudoExpand<(outs), (ins pred:$p, reglist:$regs, variable_ops),
1705 (tPOP pred:$p, reglist:$regs)>, Sched<[WriteBrL]>;
1707 // Indirect branch using "mov pc, $Rm"
1708 let isBranch = 1, isTerminator = 1, isBarrier = 1, isIndirectBranch = 1 in {
1709 def tBRIND : tPseudoExpand<(outs), (ins GPR:$Rm, pred:$p),
1710 2, IIC_Br, [(brind GPR:$Rm)],
1711 (tMOVr PC, GPR:$Rm, pred:$p)>, Sched<[WriteBr]>;
1715 // In Thumb1, "nop" is encoded as a "mov r8, r8". Technically, the bf00
1716 // encoding is available on ARMv6K, but we don't differentiate that finely.
1717 def : InstAlias<"nop", (tMOVr R8, R8, 14, 0), 0>, Requires<[IsThumb, IsThumb1Only]>;
1720 // "neg" is and alias for "rsb rd, rn, #0"
1721 def : tInstAlias<"neg${s}${p} $Rd, $Rm",
1722 (tRSB tGPR:$Rd, s_cc_out:$s, tGPR:$Rm, pred:$p)>;
1725 // Implied destination operand forms for shifts.
1726 def : tInstAlias<"lsl${s}${p} $Rdm, $imm",
1727 (tLSLri tGPR:$Rdm, cc_out:$s, tGPR:$Rdm, imm0_31:$imm, pred:$p)>;
1728 def : tInstAlias<"lsr${s}${p} $Rdm, $imm",
1729 (tLSRri tGPR:$Rdm, cc_out:$s, tGPR:$Rdm, imm_sr:$imm, pred:$p)>;
1730 def : tInstAlias<"asr${s}${p} $Rdm, $imm",
1731 (tASRri tGPR:$Rdm, cc_out:$s, tGPR:$Rdm, imm_sr:$imm, pred:$p)>;
1733 // Pseudo instruction ldr Rt, =immediate
1735 : tAsmPseudo<"ldr${p} $Rt, $immediate",
1736 (ins tGPR:$Rt, const_pool_asm_imm:$immediate, pred:$p)>;