1 //===- ARMInstrThumb.td - Thumb support for ARM ---------------------------===//
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, SDNPOptInFlag, SDNPOutFlag,
22 def imm_neg_XFORM : SDNodeXForm<imm, [{
23 return CurDAG->getTargetConstant(-(int)N->getZExtValue(), MVT::i32);
25 def imm_comp_XFORM : SDNodeXForm<imm, [{
26 return CurDAG->getTargetConstant(~((uint32_t)N->getZExtValue()), MVT::i32);
30 /// imm0_7 predicate - True if the 32-bit immediate is in the range [0,7].
31 def imm0_7 : PatLeaf<(i32 imm), [{
32 return (uint32_t)N->getZExtValue() < 8;
34 def imm0_7_neg : PatLeaf<(i32 imm), [{
35 return (uint32_t)-N->getZExtValue() < 8;
38 def imm0_255 : PatLeaf<(i32 imm), [{
39 return (uint32_t)N->getZExtValue() < 256;
41 def imm0_255_comp : PatLeaf<(i32 imm), [{
42 return ~((uint32_t)N->getZExtValue()) < 256;
45 def imm8_255 : PatLeaf<(i32 imm), [{
46 return (uint32_t)N->getZExtValue() >= 8 && (uint32_t)N->getZExtValue() < 256;
48 def imm8_255_neg : PatLeaf<(i32 imm), [{
49 unsigned Val = -N->getZExtValue();
50 return Val >= 8 && Val < 256;
53 // Break imm's up into two pieces: an immediate + a left shift.
54 // This uses thumb_immshifted to match and thumb_immshifted_val and
55 // thumb_immshifted_shamt to get the val/shift pieces.
56 def thumb_immshifted : PatLeaf<(imm), [{
57 return ARM_AM::isThumbImmShiftedVal((unsigned)N->getZExtValue());
60 def thumb_immshifted_val : SDNodeXForm<imm, [{
61 unsigned V = ARM_AM::getThumbImmNonShiftedVal((unsigned)N->getZExtValue());
62 return CurDAG->getTargetConstant(V, MVT::i32);
65 def thumb_immshifted_shamt : SDNodeXForm<imm, [{
66 unsigned V = ARM_AM::getThumbImmValShift((unsigned)N->getZExtValue());
67 return CurDAG->getTargetConstant(V, MVT::i32);
70 // Scaled 4 immediate.
71 def t_imm_s4 : Operand<i32> {
72 let PrintMethod = "printThumbS4ImmOperand";
75 // Define Thumb specific addressing modes.
77 // t_addrmode_rr := reg + reg
79 def t_addrmode_rr : Operand<i32>,
80 ComplexPattern<i32, 2, "SelectThumbAddrModeRR", []> {
81 let PrintMethod = "printThumbAddrModeRROperand";
82 let MIOperandInfo = (ops tGPR:$base, tGPR:$offsreg);
85 // t_addrmode_s4 := reg + reg
88 def t_addrmode_s4 : Operand<i32>,
89 ComplexPattern<i32, 3, "SelectThumbAddrModeS4", []> {
90 let PrintMethod = "printThumbAddrModeS4Operand";
91 let MIOperandInfo = (ops tGPR:$base, i32imm:$offsimm, tGPR:$offsreg);
94 // t_addrmode_s2 := reg + reg
97 def t_addrmode_s2 : Operand<i32>,
98 ComplexPattern<i32, 3, "SelectThumbAddrModeS2", []> {
99 let PrintMethod = "printThumbAddrModeS2Operand";
100 let MIOperandInfo = (ops tGPR:$base, i32imm:$offsimm, tGPR:$offsreg);
103 // t_addrmode_s1 := reg + reg
106 def t_addrmode_s1 : Operand<i32>,
107 ComplexPattern<i32, 3, "SelectThumbAddrModeS1", []> {
108 let PrintMethod = "printThumbAddrModeS1Operand";
109 let MIOperandInfo = (ops tGPR:$base, i32imm:$offsimm, tGPR:$offsreg);
112 // t_addrmode_sp := sp + imm8 * 4
114 def t_addrmode_sp : Operand<i32>,
115 ComplexPattern<i32, 2, "SelectThumbAddrModeSP", []> {
116 let PrintMethod = "printThumbAddrModeSPOperand";
117 let MIOperandInfo = (ops GPR:$base, i32imm:$offsimm);
120 //===----------------------------------------------------------------------===//
121 // Miscellaneous Instructions.
124 // FIXME: Marking these as hasSideEffects is necessary to prevent machine DCE
125 // from removing one half of the matched pairs. That breaks PEI, which assumes
126 // these will always be in pairs, and asserts if it finds otherwise. Better way?
127 let Defs = [SP], Uses = [SP], hasSideEffects = 1 in {
128 def tADJCALLSTACKUP :
129 PseudoInst<(outs), (ins i32imm:$amt1, i32imm:$amt2), NoItinerary,
130 [(ARMcallseq_end imm:$amt1, imm:$amt2)]>,
131 Requires<[IsThumb, IsThumb1Only]>;
133 def tADJCALLSTACKDOWN :
134 PseudoInst<(outs), (ins i32imm:$amt), NoItinerary,
135 [(ARMcallseq_start imm:$amt)]>,
136 Requires<[IsThumb, IsThumb1Only]>;
139 def tNOP : T1pI<(outs), (ins), NoItinerary, "nop", "",
140 [/* For disassembly only; pattern left blank */]>,
141 T1Encoding<0b101111> {
142 let Inst{9-8} = 0b11;
143 let Inst{7-0} = 0x00;
146 def tYIELD : T1pI<(outs), (ins), NoItinerary, "yield", "",
147 [/* For disassembly only; pattern left blank */]>,
148 T1Encoding<0b101111> {
149 let Inst{9-8} = 0b11;
150 let Inst{7-0} = 0x10;
153 def tWFE : T1pI<(outs), (ins), NoItinerary, "wfe", "",
154 [/* For disassembly only; pattern left blank */]>,
155 T1Encoding<0b101111> {
156 let Inst{9-8} = 0b11;
157 let Inst{7-0} = 0x20;
160 def tWFI : T1pI<(outs), (ins), NoItinerary, "wfi", "",
161 [/* For disassembly only; pattern left blank */]>,
162 T1Encoding<0b101111> {
163 let Inst{9-8} = 0b11;
164 let Inst{7-0} = 0x30;
167 def tSEV : T1pI<(outs), (ins), NoItinerary, "sev", "",
168 [/* For disassembly only; pattern left blank */]>,
169 T1Encoding<0b101111> {
170 let Inst{9-8} = 0b11;
171 let Inst{7-0} = 0x40;
174 def tSETENDBE : T1I<(outs), (ins), NoItinerary, "setend\tbe",
175 [/* For disassembly only; pattern left blank */]>,
176 T1Encoding<0b101101> {
177 let Inst{9-5} = 0b10010;
179 let Inst{3} = 1; // Big-Endian
180 let Inst{2-0} = 0b000;
183 def tSETENDLE : T1I<(outs), (ins), NoItinerary, "setend\tle",
184 [/* For disassembly only; pattern left blank */]>,
185 T1Encoding<0b101101> {
186 let Inst{9-5} = 0b10010;
188 let Inst{3} = 0; // Little-Endian
189 let Inst{2-0} = 0b000;
192 // The i32imm operand $val can be used by a debugger to store more information
193 // about the breakpoint.
194 def tBKPT : T1I<(outs), (ins i32imm:$val), NoItinerary, "bkpt\t$val",
195 [/* For disassembly only; pattern left blank */]>,
196 T1Encoding<0b101111> {
198 let Inst{9-8} = 0b10;
202 // Change Processor State is a system instruction -- for disassembly only.
203 // The singleton $opt operand contains the following information:
204 // opt{4-0} = mode ==> don't care
205 // opt{5} = changemode ==> 0 (false for 16-bit Thumb instr)
206 // opt{8-6} = AIF from Inst{2-0}
207 // opt{10-9} = 1:imod from Inst{4} with 0b10 as enable and 0b11 as disable
209 // The opt{4-0} and opt{5} sub-fields are to accommodate 32-bit Thumb and ARM
210 // CPS which has more options.
211 def tCPS : T1I<(outs), (ins cps_opt:$opt), NoItinerary, "cps$opt",
212 [/* For disassembly only; pattern left blank */]>,
215 // For both thumb1 and thumb2.
216 let isNotDuplicable = 1, isCodeGenOnly = 1 in
217 def tPICADD : TIt<(outs GPR:$dst), (ins GPR:$lhs, pclabel:$cp), IIC_iALUr, "",
218 [(set GPR:$dst, (ARMpic_add GPR:$lhs, imm:$cp))]>,
219 T1Special<{0,0,?,?}> {
222 let Inst{6-3} = 0b1111;
227 def tADDrPCi : T1I<(outs tGPR:$dst), (ins t_imm_s4:$rhs), IIC_iALUi,
228 "add\t$dst, pc, $rhs", []>,
229 T1Encoding<{1,0,1,0,0,?}> {
233 let Inst{10-8} = dst;
237 // ADD <Rd>, sp, #<imm8>
238 // This is rematerializable, which is particularly useful for taking the
239 // address of locals.
240 let isReMaterializable = 1 in
241 def tADDrSPi : T1I<(outs tGPR:$dst), (ins GPR:$sp, t_imm_s4:$rhs), IIC_iALUi,
242 "add\t$dst, $sp, $rhs", []>,
243 T1Encoding<{1,0,1,0,1,?}> {
247 let Inst{10-8} = dst;
251 // ADD sp, sp, #<imm7>
252 def tADDspi : TIt<(outs GPR:$dst), (ins GPR:$lhs, t_imm_s4:$rhs), IIC_iALUi,
253 "add\t$dst, $rhs", []>,
254 T1Misc<{0,0,0,0,0,?,?}> {
260 // SUB sp, sp, #<imm7>
261 // FIXME: The encoding and the ASM string don't match up.
262 def tSUBspi : TIt<(outs GPR:$dst), (ins GPR:$lhs, t_imm_s4:$rhs), IIC_iALUi,
263 "sub\t$dst, $rhs", []>,
264 T1Misc<{0,0,0,0,1,?,?}> {
271 def tADDrSP : TIt<(outs GPR:$dst), (ins GPR:$lhs, GPR:$rhs), IIC_iALUr,
272 "add\t$dst, $rhs", []>,
273 T1Special<{0,0,?,?}> {
274 // A8.6.9 Encoding T1
276 let Inst{7} = dst{3};
277 let Inst{6-3} = 0b1101;
278 let Inst{2-0} = dst{2-0};
282 def tADDspr : TIt<(outs GPR:$dst), (ins GPR:$lhs, GPR:$rhs), IIC_iALUr,
283 "add\t$dst, $rhs", []>,
284 T1Special<{0,0,?,?}> {
285 // A8.6.9 Encoding T2
289 let Inst{2-0} = 0b101;
292 //===----------------------------------------------------------------------===//
293 // Control Flow Instructions.
296 let isReturn = 1, isTerminator = 1, isBarrier = 1 in {
297 def tBX_RET : TI<(outs), (ins), IIC_Br, "bx\tlr",
299 T1Special<{1,1,0,?}> { // A6.2.3 & A8.6.25
300 let Inst{6-3} = 0b1110; // Rm = lr
301 let Inst{2-0} = 0b000;
304 // Alternative return instruction used by vararg functions.
305 def tBX_RET_vararg : TI<(outs), (ins tGPR:$Rm),
308 T1Special<{1,1,0,?}> { // A6.2.3 & A8.6.25
311 let Inst{2-0} = 0b000;
316 let isBranch = 1, isTerminator = 1, isBarrier = 1, isIndirectBranch = 1 in {
317 def tBRIND : TI<(outs), (ins GPR:$Rm), IIC_Br, "mov\tpc, $Rm",
319 T1Special<{1,0,?,?}> {
322 let Inst{7} = 0b1; // <Rd> = Inst{7:2-0} = pc
323 let Inst{2-0} = 0b111;
327 // FIXME: remove when we have a way to marking a MI with these properties.
328 let isReturn = 1, isTerminator = 1, isBarrier = 1, mayLoad = 1,
329 hasExtraDefRegAllocReq = 1 in
330 def tPOP_RET : T1I<(outs), (ins pred:$p, reglist:$regs, variable_ops),
332 "pop${p}\t$regs", []>,
333 T1Misc<{1,1,0,?,?,?,?}> {
335 let Inst{8} = regs{15};
336 let Inst{7-0} = regs{7-0};
340 Defs = [R0, R1, R2, R3, R12, LR,
341 D0, D1, D2, D3, D4, D5, D6, D7,
342 D16, D17, D18, D19, D20, D21, D22, D23,
343 D24, D25, D26, D27, D28, D29, D30, D31, CPSR, FPSCR] in {
344 // Also used for Thumb2
345 def tBL : TIx2<0b11110, 0b11, 1,
346 (outs), (ins i32imm:$func, variable_ops), IIC_Br,
348 [(ARMtcall tglobaladdr:$func)]>,
349 Requires<[IsThumb, IsNotDarwin]>;
351 // ARMv5T and above, also used for Thumb2
352 def tBLXi : TIx2<0b11110, 0b11, 0,
353 (outs), (ins i32imm:$func, variable_ops), IIC_Br,
355 [(ARMcall tglobaladdr:$func)]>,
356 Requires<[IsThumb, HasV5T, IsNotDarwin]>;
358 // Also used for Thumb2
359 def tBLXr : TI<(outs), (ins GPR:$func, variable_ops), IIC_Br,
361 [(ARMtcall GPR:$func)]>,
362 Requires<[IsThumb, HasV5T, IsNotDarwin]>,
363 T1Special<{1,1,1,?}>; // A6.2.3 & A8.6.24;
366 let isCodeGenOnly = 1 in
367 def tBX : TIx2<{?,?,?,?,?}, {?,?}, ?,
368 (outs), (ins tGPR:$func, variable_ops), IIC_Br,
369 "mov\tlr, pc\n\tbx\t$func",
370 [(ARMcall_nolink tGPR:$func)]>,
371 Requires<[IsThumb, IsThumb1Only, IsNotDarwin]>;
374 // On Darwin R9 is call-clobbered.
376 Defs = [R0, R1, R2, R3, R9, R12, LR,
377 D0, D1, D2, D3, D4, D5, D6, D7,
378 D16, D17, D18, D19, D20, D21, D22, D23,
379 D24, D25, D26, D27, D28, D29, D30, D31, CPSR, FPSCR] in {
380 // Also used for Thumb2
381 def tBLr9 : TIx2<0b11110, 0b11, 1,
382 (outs), (ins i32imm:$func, variable_ops), IIC_Br,
384 [(ARMtcall tglobaladdr:$func)]>,
385 Requires<[IsThumb, IsDarwin]>;
387 // ARMv5T and above, also used for Thumb2
388 def tBLXi_r9 : TIx2<0b11110, 0b11, 0,
389 (outs), (ins i32imm:$func, variable_ops), IIC_Br,
391 [(ARMcall tglobaladdr:$func)]>,
392 Requires<[IsThumb, HasV5T, IsDarwin]>;
394 // Also used for Thumb2
395 def tBLXr_r9 : TI<(outs), (ins GPR:$func, variable_ops), IIC_Br,
397 [(ARMtcall GPR:$func)]>,
398 Requires<[IsThumb, HasV5T, IsDarwin]>,
399 T1Special<{1,1,1,?}>; // A6.2.3 & A8.6.24
402 let isCodeGenOnly = 1 in
403 def tBXr9 : TIx2<{?,?,?,?,?}, {?,?}, ?,
404 (outs), (ins tGPR:$func, variable_ops), IIC_Br,
405 "mov\tlr, pc\n\tbx\t$func",
406 [(ARMcall_nolink tGPR:$func)]>,
407 Requires<[IsThumb, IsThumb1Only, IsDarwin]>;
410 let isBranch = 1, isTerminator = 1 in {
411 let isBarrier = 1 in {
412 let isPredicable = 1 in
413 def tB : T1I<(outs), (ins brtarget:$target), IIC_Br,
414 "b\t$target", [(br bb:$target)]>,
415 T1Encoding<{1,1,1,0,0,?}>;
419 def tBfar : TIx2<0b11110, 0b11, 1, (outs), (ins brtarget:$target), IIC_Br,
422 let isCodeGenOnly = 1 in
423 def tBR_JTr : T1JTI<(outs),
424 (ins tGPR:$target, jtblock_operand:$jt, i32imm:$id),
425 IIC_Br, "mov\tpc, $target\n\t.align\t2$jt",
426 [(ARMbrjt tGPR:$target, tjumptable:$jt, imm:$id)]>,
428 let Inst{15-7} = 0b010001101;
429 let Inst{2-0} = 0b111;
434 // FIXME: should be able to write a pattern for ARMBrcond, but can't use
435 // a two-value operand where a dag node expects two operands. :(
436 let isBranch = 1, isTerminator = 1 in
437 def tBcc : T1I<(outs), (ins brtarget:$target, pred:$cc), IIC_Br,
439 [/*(ARMbrcond bb:$target, imm:$cc)*/]>,
440 T1Encoding<{1,1,0,1,?,?}>;
442 // Compare and branch on zero / non-zero
443 let isBranch = 1, isTerminator = 1 in {
444 def tCBZ : T1I<(outs), (ins tGPR:$Rn, brtarget:$target), IIC_Br,
445 "cbz\t$Rn, $target", []>,
446 T1Misc<{0,0,?,1,?,?,?}> {
449 let Inst{9} = target{5};
450 let Inst{7-3} = target{4-0};
454 def tCBNZ : T1I<(outs), (ins tGPR:$cmp, brtarget:$target), IIC_Br,
455 "cbnz\t$cmp, $target", []>,
456 T1Misc<{1,0,?,1,?,?,?}> {
459 let Inst{9} = target{5};
460 let Inst{7-3} = target{4-0};
465 // A8.6.218 Supervisor Call (Software Interrupt) -- for disassembly only
466 // A8.6.16 B: Encoding T1
467 // If Inst{11-8} == 0b1111 then SEE SVC
469 def tSVC : T1pI<(outs), (ins i32imm:$imm), IIC_Br,
470 "svc", "\t$imm", []>, Encoding16 {
472 let Inst{15-12} = 0b1101;
473 let Inst{11-8} = 0b1111;
477 // A8.6.16 B: Encoding T1
478 // If Inst{11-8} == 0b1110 then UNDEFINED
479 let isBarrier = 1, isTerminator = 1 in
480 def tTRAP : TI<(outs), (ins), IIC_Br,
481 "trap", [(trap)]>, Encoding16 {
482 let Inst{15-12} = 0b1101;
483 let Inst{11-8} = 0b1110;
486 //===----------------------------------------------------------------------===//
487 // Load Store Instructions.
490 let canFoldAsLoad = 1, isReMaterializable = 1 in
491 def tLDR : T1pI4<(outs tGPR:$Rt), (ins t_addrmode_s4:$addr), IIC_iLoad_r,
492 "ldr", "\t$Rt, $addr",
493 [(set tGPR:$Rt, (load t_addrmode_s4:$addr))]>,
496 def tLDRi: T1pI4<(outs tGPR:$dst), (ins t_addrmode_s4:$addr), IIC_iLoad_r,
497 "ldr", "\t$dst, $addr",
501 def tLDRB : T1pI1<(outs tGPR:$dst), (ins t_addrmode_s1:$addr), IIC_iLoad_bh_r,
502 "ldrb", "\t$dst, $addr",
503 [(set tGPR:$dst, (zextloadi8 t_addrmode_s1:$addr))]>,
505 def tLDRBi: T1pI1<(outs tGPR:$dst), (ins t_addrmode_s1:$addr), IIC_iLoad_bh_r,
506 "ldrb", "\t$dst, $addr",
510 def tLDRH : T1pI2<(outs tGPR:$dst), (ins t_addrmode_s2:$addr), IIC_iLoad_bh_r,
511 "ldrh", "\t$dst, $addr",
512 [(set tGPR:$dst, (zextloadi16 t_addrmode_s2:$addr))]>,
514 def tLDRHi: T1pI2<(outs tGPR:$dst), (ins t_addrmode_s2:$addr), IIC_iLoad_bh_r,
515 "ldrh", "\t$dst, $addr",
519 let AddedComplexity = 10 in
520 def tLDRSB : T1pI1<(outs tGPR:$dst), (ins t_addrmode_rr:$addr), IIC_iLoad_bh_r,
521 "ldrsb", "\t$dst, $addr",
522 [(set tGPR:$dst, (sextloadi8 t_addrmode_rr:$addr))]>,
525 let AddedComplexity = 10 in
526 def tLDRSH : T1pI2<(outs tGPR:$dst), (ins t_addrmode_rr:$addr), IIC_iLoad_bh_r,
527 "ldrsh", "\t$dst, $addr",
528 [(set tGPR:$dst, (sextloadi16 t_addrmode_rr:$addr))]>,
531 let canFoldAsLoad = 1 in
532 def tLDRspi : T1pIs<(outs tGPR:$dst), (ins t_addrmode_sp:$addr), IIC_iLoad_i,
533 "ldr", "\t$dst, $addr",
534 [(set tGPR:$dst, (load t_addrmode_sp:$addr))]>,
537 // Special instruction for restore. It cannot clobber condition register
538 // when it's expanded by eliminateCallFramePseudoInstr().
539 let canFoldAsLoad = 1, mayLoad = 1, neverHasSideEffects = 1 in
540 def tRestore : T1pIs<(outs tGPR:$dst), (ins t_addrmode_sp:$addr), IIC_iLoad_i,
541 "ldr", "\t$dst, $addr", []>,
545 // FIXME: Use ldr.n to work around a Darwin assembler bug.
546 let canFoldAsLoad = 1, isReMaterializable = 1 in
547 def tLDRpci : T1pIs<(outs tGPR:$dst), (ins i32imm:$addr), IIC_iLoad_i,
548 "ldr", ".n\t$dst, $addr",
549 [(set tGPR:$dst, (load (ARMWrapper tconstpool:$addr)))]>,
550 T1Encoding<{0,1,0,0,1,?}>; // A6.2 & A8.6.59
552 // Special LDR for loads from non-pc-relative constpools.
553 let canFoldAsLoad = 1, mayLoad = 1, neverHasSideEffects = 1,
554 isReMaterializable = 1 in
555 def tLDRcp : T1pIs<(outs tGPR:$dst), (ins i32imm:$addr), IIC_iLoad_i,
556 "ldr", "\t$dst, $addr", []>,
559 def tSTR : T1pI4<(outs), (ins tGPR:$src, t_addrmode_s4:$addr), IIC_iStore_r,
560 "str", "\t$src, $addr",
561 [(store tGPR:$src, t_addrmode_s4:$addr)]>,
563 def tSTRi: T1pI4<(outs), (ins tGPR:$src, t_addrmode_s4:$addr), IIC_iStore_r,
564 "str", "\t$src, $addr",
568 def tSTRB : T1pI1<(outs), (ins tGPR:$src, t_addrmode_s1:$addr), IIC_iStore_bh_r,
569 "strb", "\t$src, $addr",
570 [(truncstorei8 tGPR:$src, t_addrmode_s1:$addr)]>,
572 def tSTRBi: T1pI1<(outs), (ins tGPR:$src, t_addrmode_s1:$addr), IIC_iStore_bh_r,
573 "strb", "\t$src, $addr",
577 def tSTRH : T1pI2<(outs), (ins tGPR:$src, t_addrmode_s2:$addr), IIC_iStore_bh_r,
578 "strh", "\t$src, $addr",
579 [(truncstorei16 tGPR:$src, t_addrmode_s2:$addr)]>,
581 def tSTRHi: T1pI2<(outs), (ins tGPR:$src, t_addrmode_s2:$addr), IIC_iStore_bh_r,
582 "strh", "\t$src, $addr",
586 def tSTRspi : T1pIs<(outs), (ins tGPR:$src, t_addrmode_sp:$addr), IIC_iStore_i,
587 "str", "\t$src, $addr",
588 [(store tGPR:$src, t_addrmode_sp:$addr)]>,
591 let mayStore = 1, neverHasSideEffects = 1 in {
592 // Special instruction for spill. It cannot clobber condition register
593 // when it's expanded by eliminateCallFramePseudoInstr().
594 def tSpill : T1pIs<(outs), (ins tGPR:$src, t_addrmode_sp:$addr), IIC_iStore_i,
595 "str", "\t$src, $addr", []>,
599 //===----------------------------------------------------------------------===//
600 // Load / store multiple Instructions.
603 multiclass thumb_ldst_mult<string asm, InstrItinClass itin,
604 InstrItinClass itin_upd, bits<6> T1Enc,
607 T1I<(outs), (ins GPR:$Rn, pred:$p, reglist:$regs, variable_ops),
608 itin, !strconcat(asm, "ia${p}\t$Rn, $regs"), []>,
613 let Inst{7-0} = regs;
616 T1It<(outs GPR:$wb), (ins GPR:$Rn, pred:$p, reglist:$regs, variable_ops),
617 itin_upd, !strconcat(asm, "ia${p}\t$Rn!, $regs"), "$Rn = $wb", []>,
622 let Inst{7-0} = regs;
626 // These require base address to be written back or one of the loaded regs.
627 let neverHasSideEffects = 1 in {
629 let mayLoad = 1, hasExtraDefRegAllocReq = 1 in
630 defm tLDM : thumb_ldst_mult<"ldm", IIC_iLoad_m, IIC_iLoad_mu,
633 let mayStore = 1, hasExtraSrcRegAllocReq = 1 in
634 defm tSTM : thumb_ldst_mult<"stm", IIC_iStore_m, IIC_iStore_mu,
637 } // neverHasSideEffects
639 let mayLoad = 1, Uses = [SP], Defs = [SP], hasExtraDefRegAllocReq = 1 in
640 def tPOP : T1I<(outs), (ins pred:$p, reglist:$regs, variable_ops),
642 "pop${p}\t$regs", []>,
643 T1Misc<{1,1,0,?,?,?,?}> {
645 let Inst{8} = regs{15};
646 let Inst{7-0} = regs{7-0};
649 let mayStore = 1, Uses = [SP], Defs = [SP], hasExtraSrcRegAllocReq = 1 in
650 def tPUSH : T1I<(outs), (ins pred:$p, reglist:$regs, variable_ops),
652 "push${p}\t$regs", []>,
653 T1Misc<{0,1,0,?,?,?,?}> {
655 let Inst{8} = regs{14};
656 let Inst{7-0} = regs{7-0};
659 //===----------------------------------------------------------------------===//
660 // Arithmetic Instructions.
663 // Add with carry register
664 let isCommutable = 1, Uses = [CPSR] in
665 def tADC : T1sIt<(outs tGPR:$dst), (ins tGPR:$lhs, tGPR:$rhs), IIC_iALUr,
666 "adc", "\t$dst, $rhs",
667 [(set tGPR:$dst, (adde tGPR:$lhs, tGPR:$rhs))]>,
668 T1DataProcessing<0b0101> {
677 def tADDi3 : T1sI<(outs tGPR:$Rd), (ins tGPR:$Rn, i32imm:$imm3), IIC_iALUi,
678 "add", "\t$Rd, $Rn, $imm3",
679 [(set tGPR:$Rd, (add tGPR:$Rn, imm0_7:$imm3))]>,
685 let Inst{8-6} = imm3;
690 def tADDi8 : T1sIt<(outs tGPR:$dst), (ins tGPR:$lhs, i32imm:$rhs), IIC_iALUi,
691 "add", "\t$dst, $rhs",
692 [(set tGPR:$dst, (add tGPR:$lhs, imm8_255:$rhs))]>,
693 T1General<{1,1,0,?,?}> {
697 let Inst{10-8} = lhs;
702 let isCommutable = 1 in
703 def tADDrr : T1sI<(outs tGPR:$Rd), (ins tGPR:$Rn, tGPR:$Rm), IIC_iALUr,
704 "add", "\t$Rd, $Rn, $Rm",
705 [(set tGPR:$Rd, (add tGPR:$Rn, tGPR:$Rm))]>,
716 let neverHasSideEffects = 1 in
717 def tADDhirr : T1pIt<(outs GPR:$dst), (ins GPR:$lhs, GPR:$rhs), IIC_iALUr,
718 "add", "\t$dst, $rhs", []>,
719 T1Special<{0,0,?,?}> {
724 let Inst{7} = dst{3};
725 let Inst{2-0} = dst{2-0};
729 let isCommutable = 1 in
730 def tAND : T1sIt<(outs tGPR:$dst), (ins tGPR:$lhs, tGPR:$rhs), IIC_iBITr,
731 "and", "\t$dst, $rhs",
732 [(set tGPR:$dst, (and tGPR:$lhs, tGPR:$rhs))]>,
733 T1DataProcessing<0b0000> {
742 def tASRri : T1sI<(outs tGPR:$Rd), (ins tGPR:$Rm, i32imm:$imm5), IIC_iMOVsi,
743 "asr", "\t$Rd, $Rm, $imm5",
744 [(set tGPR:$Rd, (sra tGPR:$Rm, (i32 imm:$imm5)))]>,
745 T1General<{0,1,0,?,?}> {
750 let Inst{10-6} = imm5;
756 def tASRrr : T1sIt<(outs tGPR:$dst), (ins tGPR:$lhs, tGPR:$rhs), IIC_iMOVsr,
757 "asr", "\t$dst, $rhs",
758 [(set tGPR:$dst, (sra tGPR:$lhs, tGPR:$rhs))]>,
759 T1DataProcessing<0b0100> {
768 def tBIC : T1sIt<(outs tGPR:$dst), (ins tGPR:$lhs, tGPR:$rhs), IIC_iBITr,
769 "bic", "\t$dst, $rhs",
770 [(set tGPR:$dst, (and tGPR:$lhs, (not tGPR:$rhs)))]>,
771 T1DataProcessing<0b1110>;
774 let isCompare = 1, Defs = [CPSR] in {
775 //FIXME: Disable CMN, as CCodes are backwards from compare expectations
776 // Compare-to-zero still works out, just not the relationals
777 //def tCMN : T1pI<(outs), (ins tGPR:$lhs, tGPR:$rhs), IIC_iCMPr,
778 // "cmn", "\t$lhs, $rhs",
779 // [(ARMcmp tGPR:$lhs, (ineg tGPR:$rhs))]>,
780 // T1DataProcessing<0b1011>;
781 def tCMNz : T1pI<(outs), (ins tGPR:$lhs, tGPR:$rhs), IIC_iCMPr,
782 "cmn", "\t$lhs, $rhs",
783 [(ARMcmpZ tGPR:$lhs, (ineg tGPR:$rhs))]>,
784 T1DataProcessing<0b1011>;
788 let isCompare = 1, Defs = [CPSR] in {
789 def tCMPi8 : T1pI<(outs), (ins tGPR:$lhs, i32imm:$rhs), IIC_iCMPi,
790 "cmp", "\t$lhs, $rhs",
791 [(ARMcmp tGPR:$lhs, imm0_255:$rhs)]>,
792 T1General<{1,0,1,?,?}>;
793 def tCMPzi8 : T1pI<(outs), (ins tGPR:$lhs, i32imm:$rhs), IIC_iCMPi,
794 "cmp", "\t$lhs, $rhs",
795 [(ARMcmpZ tGPR:$lhs, imm0_255:$rhs)]>,
796 T1General<{1,0,1,?,?}>;
800 let isCompare = 1, Defs = [CPSR] in {
801 def tCMPr : T1pI<(outs), (ins tGPR:$Rn, tGPR:$Rm), IIC_iCMPr,
803 [(ARMcmp tGPR:$Rn, tGPR:$Rm)]>,
804 T1DataProcessing<0b1010> {
812 def tCMPzr : T1pI<(outs), (ins tGPR:$lhs, tGPR:$rhs), IIC_iCMPr,
813 "cmp", "\t$lhs, $rhs",
814 [(ARMcmpZ tGPR:$lhs, tGPR:$rhs)]>,
815 T1DataProcessing<0b1010>;
817 def tCMPhir : T1pI<(outs), (ins GPR:$lhs, GPR:$rhs), IIC_iCMPr,
818 "cmp", "\t$lhs, $rhs", []>,
819 T1Special<{0,1,?,?}>;
820 def tCMPzhir : T1pI<(outs), (ins GPR:$lhs, GPR:$rhs), IIC_iCMPr,
821 "cmp", "\t$lhs, $rhs", []>,
822 T1Special<{0,1,?,?}>;
827 let isCommutable = 1 in
828 def tEOR : T1sIt<(outs tGPR:$dst), (ins tGPR:$lhs, tGPR:$rhs), IIC_iBITr,
829 "eor", "\t$dst, $rhs",
830 [(set tGPR:$dst, (xor tGPR:$lhs, tGPR:$rhs))]>,
831 T1DataProcessing<0b0001>;
834 def tLSLri : T1sI<(outs tGPR:$dst), (ins tGPR:$lhs, i32imm:$rhs), IIC_iMOVsi,
835 "lsl", "\t$dst, $lhs, $rhs",
836 [(set tGPR:$dst, (shl tGPR:$lhs, (i32 imm:$rhs)))]>,
837 T1General<{0,0,0,?,?}>;
840 def tLSLrr : T1sIt<(outs tGPR:$dst), (ins tGPR:$lhs, tGPR:$rhs), IIC_iMOVsr,
841 "lsl", "\t$dst, $rhs",
842 [(set tGPR:$dst, (shl tGPR:$lhs, tGPR:$rhs))]>,
843 T1DataProcessing<0b0010>;
846 def tLSRri : T1sI<(outs tGPR:$dst), (ins tGPR:$lhs, i32imm:$rhs), IIC_iMOVsi,
847 "lsr", "\t$dst, $lhs, $rhs",
848 [(set tGPR:$dst, (srl tGPR:$lhs, (i32 imm:$rhs)))]>,
849 T1General<{0,0,1,?,?}>;
852 def tLSRrr : T1sIt<(outs tGPR:$dst), (ins tGPR:$lhs, tGPR:$rhs), IIC_iMOVsr,
853 "lsr", "\t$dst, $rhs",
854 [(set tGPR:$dst, (srl tGPR:$lhs, tGPR:$rhs))]>,
855 T1DataProcessing<0b0011>;
859 def tMOVi8 : T1sI<(outs tGPR:$dst), (ins i32imm:$src), IIC_iMOVi,
860 "mov", "\t$dst, $src",
861 [(set tGPR:$dst, imm0_255:$src)]>,
862 T1General<{1,0,0,?,?}>;
864 // TODO: A7-73: MOV(2) - mov setting flag.
867 let neverHasSideEffects = 1 in {
868 // FIXME: Make this predicable.
869 def tMOVr : T1I<(outs tGPR:$dst), (ins tGPR:$src), IIC_iMOVr,
870 "mov\t$dst, $src", []>,
873 def tMOVSr : T1I<(outs tGPR:$dst), (ins tGPR:$src), IIC_iMOVr,
874 "movs\t$dst, $src", []>, Encoding16 {
875 let Inst{15-6} = 0b0000000000;
878 // FIXME: Make these predicable.
879 def tMOVgpr2tgpr : T1I<(outs tGPR:$dst), (ins GPR:$src), IIC_iMOVr,
880 "mov\t$dst, $src", []>,
881 T1Special<{1,0,0,?}>;
882 def tMOVtgpr2gpr : T1I<(outs GPR:$dst), (ins tGPR:$src), IIC_iMOVr,
883 "mov\t$dst, $src", []>,
884 T1Special<{1,0,?,0}>;
885 def tMOVgpr2gpr : T1I<(outs GPR:$dst), (ins GPR:$src), IIC_iMOVr,
886 "mov\t$dst, $src", []>,
887 T1Special<{1,0,?,?}>;
888 } // neverHasSideEffects
891 let isCommutable = 1 in
892 def tMUL : T1sIt<(outs tGPR:$dst), (ins tGPR:$lhs, tGPR:$rhs), IIC_iMUL32,
893 "mul", "\t$dst, $rhs, $dst", /* A8.6.105 MUL Encoding T1 */
894 [(set tGPR:$dst, (mul tGPR:$lhs, tGPR:$rhs))]>,
895 T1DataProcessing<0b1101>;
897 // move inverse register
898 def tMVN : T1sI<(outs tGPR:$dst), (ins tGPR:$src), IIC_iMVNr,
899 "mvn", "\t$dst, $src",
900 [(set tGPR:$dst, (not tGPR:$src))]>,
901 T1DataProcessing<0b1111>;
903 // bitwise or register
904 let isCommutable = 1 in
905 def tORR : T1sIt<(outs tGPR:$dst), (ins tGPR:$lhs, tGPR:$rhs), IIC_iBITr,
906 "orr", "\t$dst, $rhs",
907 [(set tGPR:$dst, (or tGPR:$lhs, tGPR:$rhs))]>,
908 T1DataProcessing<0b1100>;
911 def tREV : T1pI<(outs tGPR:$dst), (ins tGPR:$src), IIC_iUNAr,
912 "rev", "\t$dst, $src",
913 [(set tGPR:$dst, (bswap tGPR:$src))]>,
914 Requires<[IsThumb, IsThumb1Only, HasV6]>,
915 T1Misc<{1,0,1,0,0,0,?}>;
917 def tREV16 : T1pI<(outs tGPR:$dst), (ins tGPR:$src), IIC_iUNAr,
918 "rev16", "\t$dst, $src",
920 (or (and (srl tGPR:$src, (i32 8)), 0xFF),
921 (or (and (shl tGPR:$src, (i32 8)), 0xFF00),
922 (or (and (srl tGPR:$src, (i32 8)), 0xFF0000),
923 (and (shl tGPR:$src, (i32 8)), 0xFF000000)))))]>,
924 Requires<[IsThumb, IsThumb1Only, HasV6]>,
925 T1Misc<{1,0,1,0,0,1,?}>;
927 def tREVSH : T1pI<(outs tGPR:$dst), (ins tGPR:$src), IIC_iUNAr,
928 "revsh", "\t$dst, $src",
931 (or (srl (and tGPR:$src, 0xFF00), (i32 8)),
932 (shl tGPR:$src, (i32 8))), i16))]>,
933 Requires<[IsThumb, IsThumb1Only, HasV6]>,
934 T1Misc<{1,0,1,0,1,1,?}>;
936 // rotate right register
937 def tROR : T1sIt<(outs tGPR:$dst), (ins tGPR:$lhs, tGPR:$rhs), IIC_iMOVsr,
938 "ror", "\t$dst, $rhs",
939 [(set tGPR:$dst, (rotr tGPR:$lhs, tGPR:$rhs))]>,
940 T1DataProcessing<0b0111>;
943 def tRSB : T1sI<(outs tGPR:$dst), (ins tGPR:$src), IIC_iALUi,
944 "rsb", "\t$dst, $src, #0",
945 [(set tGPR:$dst, (ineg tGPR:$src))]>,
946 T1DataProcessing<0b1001>;
948 // Subtract with carry register
950 def tSBC : T1sIt<(outs tGPR:$dst), (ins tGPR:$lhs, tGPR:$rhs), IIC_iALUr,
951 "sbc", "\t$dst, $rhs",
952 [(set tGPR:$dst, (sube tGPR:$lhs, tGPR:$rhs))]>,
953 T1DataProcessing<0b0110>;
955 // Subtract immediate
956 def tSUBi3 : T1sI<(outs tGPR:$dst), (ins tGPR:$lhs, i32imm:$rhs), IIC_iALUi,
957 "sub", "\t$dst, $lhs, $rhs",
958 [(set tGPR:$dst, (add tGPR:$lhs, imm0_7_neg:$rhs))]>,
961 def tSUBi8 : T1sIt<(outs tGPR:$dst), (ins tGPR:$lhs, i32imm:$rhs), IIC_iALUi,
962 "sub", "\t$dst, $rhs",
963 [(set tGPR:$dst, (add tGPR:$lhs, imm8_255_neg:$rhs))]>,
964 T1General<{1,1,1,?,?}>;
967 def tSUBrr : T1sI<(outs tGPR:$dst), (ins tGPR:$lhs, tGPR:$rhs), IIC_iALUr,
968 "sub", "\t$dst, $lhs, $rhs",
969 [(set tGPR:$dst, (sub tGPR:$lhs, tGPR:$rhs))]>,
972 // TODO: A7-96: STMIA - store multiple.
975 def tSXTB : T1pI<(outs tGPR:$dst), (ins tGPR:$src), IIC_iUNAr,
976 "sxtb", "\t$dst, $src",
977 [(set tGPR:$dst, (sext_inreg tGPR:$src, i8))]>,
978 Requires<[IsThumb, IsThumb1Only, HasV6]>,
979 T1Misc<{0,0,1,0,0,1,?}>;
982 def tSXTH : T1pI<(outs tGPR:$dst), (ins tGPR:$src), IIC_iUNAr,
983 "sxth", "\t$dst, $src",
984 [(set tGPR:$dst, (sext_inreg tGPR:$src, i16))]>,
985 Requires<[IsThumb, IsThumb1Only, HasV6]>,
986 T1Misc<{0,0,1,0,0,0,?}>;
989 let isCompare = 1, isCommutable = 1, Defs = [CPSR] in
990 def tTST : T1pI<(outs), (ins tGPR:$lhs, tGPR:$rhs), IIC_iTSTr,
991 "tst", "\t$lhs, $rhs",
992 [(ARMcmpZ (and_su tGPR:$lhs, tGPR:$rhs), 0)]>,
993 T1DataProcessing<0b1000>;
996 def tUXTB : T1pI<(outs tGPR:$dst), (ins tGPR:$src), IIC_iUNAr,
997 "uxtb", "\t$dst, $src",
998 [(set tGPR:$dst, (and tGPR:$src, 0xFF))]>,
999 Requires<[IsThumb, IsThumb1Only, HasV6]>,
1000 T1Misc<{0,0,1,0,1,1,?}>;
1002 // zero-extend short
1003 def tUXTH : T1pI<(outs tGPR:$dst), (ins tGPR:$src), IIC_iUNAr,
1004 "uxth", "\t$dst, $src",
1005 [(set tGPR:$dst, (and tGPR:$src, 0xFFFF))]>,
1006 Requires<[IsThumb, IsThumb1Only, HasV6]>,
1007 T1Misc<{0,0,1,0,1,0,?}>;
1010 // Conditional move tMOVCCr - Used to implement the Thumb SELECT_CC operation.
1011 // Expanded after instruction selection into a branch sequence.
1012 let usesCustomInserter = 1 in // Expanded after instruction selection.
1013 def tMOVCCr_pseudo :
1014 PseudoInst<(outs tGPR:$dst), (ins tGPR:$false, tGPR:$true, pred:$cc),
1016 [/*(set tGPR:$dst, (ARMcmov tGPR:$false, tGPR:$true, imm:$cc))*/]>;
1019 // 16-bit movcc in IT blocks for Thumb2.
1020 let neverHasSideEffects = 1 in {
1021 def tMOVCCr : T1pIt<(outs GPR:$dst), (ins GPR:$lhs, GPR:$rhs), IIC_iCMOVr,
1022 "mov", "\t$dst, $rhs", []>,
1023 T1Special<{1,0,?,?}>;
1025 let isMoveImm = 1 in
1026 def tMOVCCi : T1pIt<(outs tGPR:$dst), (ins tGPR:$lhs, i32imm:$rhs), IIC_iCMOVi,
1027 "mov", "\t$dst, $rhs", []>,
1028 T1General<{1,0,0,?,?}>;
1029 } // neverHasSideEffects
1031 // tLEApcrel - Load a pc-relative address into a register without offending the
1033 let neverHasSideEffects = 1 in {
1034 let isReMaterializable = 1 in
1035 def tLEApcrel : T1I<(outs tGPR:$dst), (ins i32imm:$label, pred:$p), IIC_iALUi,
1036 "adr$p\t$dst, #$label", []>,
1037 T1Encoding<{1,0,1,0,0,?}>; // A6.2 & A8.6.10
1039 } // neverHasSideEffects
1040 def tLEApcrelJT : T1I<(outs tGPR:$dst),
1041 (ins i32imm:$label, nohash_imm:$id, pred:$p),
1042 IIC_iALUi, "adr$p\t$dst, #${label}_${id}", []>,
1043 T1Encoding<{1,0,1,0,0,?}>; // A6.2 & A8.6.10
1045 //===----------------------------------------------------------------------===//
1049 // __aeabi_read_tp preserves the registers r1-r3.
1051 Defs = [R0, LR] in {
1052 def tTPsoft : TIx2<0b11110, 0b11, 1, (outs), (ins), IIC_Br,
1053 "bl\t__aeabi_read_tp",
1054 [(set R0, ARMthread_pointer)]>;
1057 // SJLJ Exception handling intrinsics
1058 // eh_sjlj_setjmp() is an instruction sequence to store the return
1059 // address and save #0 in R0 for the non-longjmp case.
1060 // Since by its nature we may be coming from some other function to get
1061 // here, and we're using the stack frame for the containing function to
1062 // save/restore registers, we can't keep anything live in regs across
1063 // the eh_sjlj_setjmp(), else it will almost certainly have been tromped upon
1064 // when we get here from a longjmp(). We force everthing out of registers
1065 // except for our own input by listing the relevant registers in Defs. By
1066 // doing so, we also cause the prologue/epilogue code to actively preserve
1067 // all of the callee-saved resgisters, which is exactly what we want.
1068 // $val is a scratch register for our use.
1070 [ R0, R1, R2, R3, R4, R5, R6, R7, R12 ], hasSideEffects = 1,
1071 isBarrier = 1, isCodeGenOnly = 1 in {
1072 def tInt_eh_sjlj_setjmp : ThumbXI<(outs),(ins tGPR:$src, tGPR:$val),
1073 AddrModeNone, SizeSpecial, NoItinerary, "", "",
1074 [(set R0, (ARMeh_sjlj_setjmp tGPR:$src, tGPR:$val))]>;
1077 // FIXME: Non-Darwin version(s)
1078 let isBarrier = 1, hasSideEffects = 1, isTerminator = 1, isCodeGenOnly = 1,
1079 Defs = [ R7, LR, SP ] in {
1080 def tInt_eh_sjlj_longjmp : XI<(outs), (ins GPR:$src, GPR:$scratch),
1081 AddrModeNone, SizeSpecial, IndexModeNone,
1082 Pseudo, NoItinerary, "", "",
1083 [(ARMeh_sjlj_longjmp GPR:$src, GPR:$scratch)]>,
1084 Requires<[IsThumb, IsDarwin]>;
1087 //===----------------------------------------------------------------------===//
1088 // Non-Instruction Patterns
1092 def : T1Pat<(addc tGPR:$lhs, imm0_7:$rhs),
1093 (tADDi3 tGPR:$lhs, imm0_7:$rhs)>;
1094 def : T1Pat<(addc tGPR:$lhs, imm8_255:$rhs),
1095 (tADDi8 tGPR:$lhs, imm8_255:$rhs)>;
1096 def : T1Pat<(addc tGPR:$lhs, tGPR:$rhs),
1097 (tADDrr tGPR:$lhs, tGPR:$rhs)>;
1099 // Subtract with carry
1100 def : T1Pat<(addc tGPR:$lhs, imm0_7_neg:$rhs),
1101 (tSUBi3 tGPR:$lhs, imm0_7_neg:$rhs)>;
1102 def : T1Pat<(addc tGPR:$lhs, imm8_255_neg:$rhs),
1103 (tSUBi8 tGPR:$lhs, imm8_255_neg:$rhs)>;
1104 def : T1Pat<(subc tGPR:$lhs, tGPR:$rhs),
1105 (tSUBrr tGPR:$lhs, tGPR:$rhs)>;
1107 // ConstantPool, GlobalAddress
1108 def : T1Pat<(ARMWrapper tglobaladdr :$dst), (tLEApcrel tglobaladdr :$dst)>;
1109 def : T1Pat<(ARMWrapper tconstpool :$dst), (tLEApcrel tconstpool :$dst)>;
1112 def : T1Pat<(ARMWrapperJT tjumptable:$dst, imm:$id),
1113 (tLEApcrelJT tjumptable:$dst, imm:$id)>;
1116 def : T1Pat<(ARMtcall texternalsym:$func), (tBL texternalsym:$func)>,
1117 Requires<[IsThumb, IsNotDarwin]>;
1118 def : T1Pat<(ARMtcall texternalsym:$func), (tBLr9 texternalsym:$func)>,
1119 Requires<[IsThumb, IsDarwin]>;
1121 def : Tv5Pat<(ARMcall texternalsym:$func), (tBLXi texternalsym:$func)>,
1122 Requires<[IsThumb, HasV5T, IsNotDarwin]>;
1123 def : Tv5Pat<(ARMcall texternalsym:$func), (tBLXi_r9 texternalsym:$func)>,
1124 Requires<[IsThumb, HasV5T, IsDarwin]>;
1126 // Indirect calls to ARM routines
1127 def : Tv5Pat<(ARMcall GPR:$dst), (tBLXr GPR:$dst)>,
1128 Requires<[IsThumb, HasV5T, IsNotDarwin]>;
1129 def : Tv5Pat<(ARMcall GPR:$dst), (tBLXr_r9 GPR:$dst)>,
1130 Requires<[IsThumb, HasV5T, IsDarwin]>;
1132 // zextload i1 -> zextload i8
1133 def : T1Pat<(zextloadi1 t_addrmode_s1:$addr),
1134 (tLDRB t_addrmode_s1:$addr)>;
1136 // extload -> zextload
1137 def : T1Pat<(extloadi1 t_addrmode_s1:$addr), (tLDRB t_addrmode_s1:$addr)>;
1138 def : T1Pat<(extloadi8 t_addrmode_s1:$addr), (tLDRB t_addrmode_s1:$addr)>;
1139 def : T1Pat<(extloadi16 t_addrmode_s2:$addr), (tLDRH t_addrmode_s2:$addr)>;
1141 // If it's impossible to use [r,r] address mode for sextload, select to
1142 // ldr{b|h} + sxt{b|h} instead.
1143 def : T1Pat<(sextloadi8 t_addrmode_s1:$addr),
1144 (tSXTB (tLDRB t_addrmode_s1:$addr))>,
1145 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1146 def : T1Pat<(sextloadi16 t_addrmode_s2:$addr),
1147 (tSXTH (tLDRH t_addrmode_s2:$addr))>,
1148 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1150 def : T1Pat<(sextloadi8 t_addrmode_s1:$addr),
1151 (tASRri (tLSLri (tLDRB t_addrmode_s1:$addr), 24), 24)>;
1152 def : T1Pat<(sextloadi16 t_addrmode_s1:$addr),
1153 (tASRri (tLSLri (tLDRH t_addrmode_s1:$addr), 16), 16)>;
1155 // Large immediate handling.
1158 def : T1Pat<(i32 thumb_immshifted:$src),
1159 (tLSLri (tMOVi8 (thumb_immshifted_val imm:$src)),
1160 (thumb_immshifted_shamt imm:$src))>;
1162 def : T1Pat<(i32 imm0_255_comp:$src),
1163 (tMVN (tMOVi8 (imm_comp_XFORM imm:$src)))>;
1165 // Pseudo instruction that combines ldr from constpool and add pc. This should
1166 // be expanded into two instructions late to allow if-conversion and
1168 let isReMaterializable = 1 in
1169 def tLDRpci_pic : PseudoInst<(outs GPR:$dst), (ins i32imm:$addr, pclabel:$cp),
1171 [(set GPR:$dst, (ARMpic_add (load (ARMWrapper tconstpool:$addr)),
1173 Requires<[IsThumb, IsThumb1Only]>;