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, 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. This uses
54 // thumb_immshifted to match and thumb_immshifted_val and thumb_immshifted_shamt
55 // 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 def MemModeThumbAsmOperand : AsmOperandClass {
78 let Name = "MemModeThumb";
79 let SuperClasses = [];
82 // t_addrmode_rr := reg + reg
84 def t_addrmode_rr : Operand<i32>,
85 ComplexPattern<i32, 2, "SelectThumbAddrModeRR", []> {
86 let PrintMethod = "printThumbAddrModeRROperand";
87 let MIOperandInfo = (ops tGPR:$base, tGPR:$offsreg);
90 // t_addrmode_s4 := reg + reg
93 def t_addrmode_s4 : Operand<i32>,
94 ComplexPattern<i32, 3, "SelectThumbAddrModeS4", []> {
95 let EncoderMethod = "getAddrModeS4OpValue";
96 let PrintMethod = "printThumbAddrModeS4Operand";
97 let MIOperandInfo = (ops tGPR:$base, i32imm:$offsimm, tGPR:$offsreg);
98 let ParserMatchClass = MemModeThumbAsmOperand;
101 // t_addrmode_s2 := reg + reg
104 def t_addrmode_s2 : Operand<i32>,
105 ComplexPattern<i32, 3, "SelectThumbAddrModeS2", []> {
106 let EncoderMethod = "getAddrModeS2OpValue";
107 let PrintMethod = "printThumbAddrModeS2Operand";
108 let MIOperandInfo = (ops tGPR:$base, i32imm:$offsimm, tGPR:$offsreg);
109 let ParserMatchClass = MemModeThumbAsmOperand;
112 // t_addrmode_s1 := reg + reg
115 def t_addrmode_s1 : Operand<i32>,
116 ComplexPattern<i32, 3, "SelectThumbAddrModeS1", []> {
117 let EncoderMethod = "getAddrModeS1OpValue";
118 let PrintMethod = "printThumbAddrModeS1Operand";
119 let MIOperandInfo = (ops tGPR:$base, i32imm:$offsimm, tGPR:$offsreg);
120 let ParserMatchClass = MemModeThumbAsmOperand;
123 // t_addrmode_sp := sp + imm8 * 4
125 def t_addrmode_sp : Operand<i32>,
126 ComplexPattern<i32, 2, "SelectThumbAddrModeSP", []> {
127 let PrintMethod = "printThumbAddrModeSPOperand";
128 let MIOperandInfo = (ops GPR:$base, i32imm:$offsimm);
129 let ParserMatchClass = MemModeThumbAsmOperand;
132 //===----------------------------------------------------------------------===//
133 // Miscellaneous Instructions.
136 // FIXME: Marking these as hasSideEffects is necessary to prevent machine DCE
137 // from removing one half of the matched pairs. That breaks PEI, which assumes
138 // these will always be in pairs, and asserts if it finds otherwise. Better way?
139 let Defs = [SP], Uses = [SP], hasSideEffects = 1 in {
140 def tADJCALLSTACKUP :
141 PseudoInst<(outs), (ins i32imm:$amt1, i32imm:$amt2), NoItinerary,
142 [(ARMcallseq_end imm:$amt1, imm:$amt2)]>,
143 Requires<[IsThumb, IsThumb1Only]>;
145 def tADJCALLSTACKDOWN :
146 PseudoInst<(outs), (ins i32imm:$amt), NoItinerary,
147 [(ARMcallseq_start imm:$amt)]>,
148 Requires<[IsThumb, IsThumb1Only]>;
151 // T1Disassembly - A simple class to make encoding some disassembly patterns
152 // easier and less verbose.
153 class T1Disassembly<bits<2> op1, bits<8> op2>
154 : T1Encoding<0b101111> {
159 def tNOP : T1pI<(outs), (ins), NoItinerary, "nop", "",
160 [/* For disassembly only; pattern left blank */]>,
161 T1Disassembly<0b11, 0x00>; // A8.6.110
163 def tYIELD : T1pI<(outs), (ins), NoItinerary, "yield", "",
164 [/* For disassembly only; pattern left blank */]>,
165 T1Disassembly<0b11, 0x10>; // A8.6.410
167 def tWFE : T1pI<(outs), (ins), NoItinerary, "wfe", "",
168 [/* For disassembly only; pattern left blank */]>,
169 T1Disassembly<0b11, 0x20>; // A8.6.408
171 def tWFI : T1pI<(outs), (ins), NoItinerary, "wfi", "",
172 [/* For disassembly only; pattern left blank */]>,
173 T1Disassembly<0b11, 0x30>; // A8.6.409
175 def tSEV : T1pI<(outs), (ins), NoItinerary, "sev", "",
176 [/* For disassembly only; pattern left blank */]>,
177 T1Disassembly<0b11, 0x40>; // A8.6.157
179 // The i32imm operand $val can be used by a debugger to store more information
180 // about the breakpoint.
181 def tBKPT : T1I<(outs), (ins i32imm:$val), NoItinerary, "bkpt\t$val",
182 [/* For disassembly only; pattern left blank */]>,
183 T1Disassembly<0b10, {?,?,?,?,?,?,?,?}> {
189 def tSETENDBE : T1I<(outs), (ins), NoItinerary, "setend\tbe",
190 [/* For disassembly only; pattern left blank */]>,
191 T1Encoding<0b101101> {
193 let Inst{9-5} = 0b10010;
195 let Inst{3} = 1; // Big-Endian
196 let Inst{2-0} = 0b000;
199 def tSETENDLE : T1I<(outs), (ins), NoItinerary, "setend\tle",
200 [/* For disassembly only; pattern left blank */]>,
201 T1Encoding<0b101101> {
203 let Inst{9-5} = 0b10010;
205 let Inst{3} = 0; // Little-Endian
206 let Inst{2-0} = 0b000;
209 // Change Processor State is a system instruction -- for disassembly only.
210 // The singleton $opt operand contains the following information:
212 // opt{4-0} = mode ==> don't care
213 // opt{5} = changemode ==> 0 (false for 16-bit Thumb instr)
214 // opt{8-6} = AIF from Inst{2-0}
215 // opt{10-9} = 1:imod from Inst{4} with 0b10 as enable and 0b11 as disable
217 // The opt{4-0} and opt{5} sub-fields are to accommodate 32-bit Thumb and ARM
218 // CPS which has more options.
219 def tCPS : T1I<(outs), (ins cps_opt:$opt), NoItinerary, "cps$opt",
220 [/* For disassembly only; pattern left blank */]>,
224 // FIXME: Finish encoding.
227 // For both thumb1 and thumb2.
228 let isNotDuplicable = 1, isCodeGenOnly = 1 in
229 def tPICADD : TIt<(outs GPR:$dst), (ins GPR:$lhs, pclabel:$cp), IIC_iALUr, "",
230 [(set GPR:$dst, (ARMpic_add GPR:$lhs, imm:$cp))]>,
231 T1Special<{0,0,?,?}> {
234 let Inst{6-3} = 0b1111; // Rm = pc
238 // PC relative add (ADR).
239 def tADDrPCi : T1I<(outs tGPR:$dst), (ins t_imm_s4:$rhs), IIC_iALUi,
240 "add\t$dst, pc, $rhs", []>,
241 T1Encoding<{1,0,1,0,0,?}> {
245 let Inst{10-8} = dst;
249 // ADD <Rd>, sp, #<imm8>
250 // This is rematerializable, which is particularly useful for taking the
251 // address of locals.
252 let isReMaterializable = 1 in
253 def tADDrSPi : T1I<(outs tGPR:$dst), (ins GPR:$sp, t_imm_s4:$rhs), IIC_iALUi,
254 "add\t$dst, $sp, $rhs", []>,
255 T1Encoding<{1,0,1,0,1,?}> {
259 let Inst{10-8} = dst;
263 // ADD sp, sp, #<imm7>
264 def tADDspi : TIt<(outs GPR:$dst), (ins GPR:$lhs, t_imm_s4:$rhs), IIC_iALUi,
265 "add\t$dst, $rhs", []>,
266 T1Misc<{0,0,0,0,0,?,?}> {
272 // SUB sp, sp, #<imm7>
273 // FIXME: The encoding and the ASM string don't match up.
274 def tSUBspi : TIt<(outs GPR:$dst), (ins GPR:$lhs, t_imm_s4:$rhs), IIC_iALUi,
275 "sub\t$dst, $rhs", []>,
276 T1Misc<{0,0,0,0,1,?,?}> {
283 def tADDrSP : TIt<(outs GPR:$dst), (ins GPR:$lhs, GPR:$rhs), IIC_iALUr,
284 "add\t$dst, $rhs", []>,
285 T1Special<{0,0,?,?}> {
286 // A8.6.9 Encoding T1
288 let Inst{7} = dst{3};
289 let Inst{6-3} = 0b1101;
290 let Inst{2-0} = dst{2-0};
294 def tADDspr : TIt<(outs GPR:$dst), (ins GPR:$lhs, GPR:$rhs), IIC_iALUr,
295 "add\t$dst, $rhs", []>,
296 T1Special<{0,0,?,?}> {
297 // A8.6.9 Encoding T2
301 let Inst{2-0} = 0b101;
304 //===----------------------------------------------------------------------===//
305 // Control Flow Instructions.
308 let isReturn = 1, isTerminator = 1, isBarrier = 1 in {
309 def tBX_RET : TI<(outs), (ins), IIC_Br, "bx\tlr",
311 T1Special<{1,1,0,?}> {
313 let Inst{6-3} = 0b1110; // Rm = lr
314 let Inst{2-0} = 0b000;
317 // Alternative return instruction used by vararg functions.
318 def tBX_RET_vararg : TI<(outs), (ins tGPR:$Rm),
321 T1Special<{1,1,0,?}> {
325 let Inst{2-0} = 0b000;
330 let isBranch = 1, isTerminator = 1, isBarrier = 1, isIndirectBranch = 1 in {
331 def tBRIND : TI<(outs), (ins GPR:$Rm),
335 T1Special<{1,0,?,?}> {
338 let Inst{7} = 1; // <Rd> = Inst{7:2-0} = pc
340 let Inst{2-0} = 0b111;
344 // FIXME: remove when we have a way to marking a MI with these properties.
345 let isReturn = 1, isTerminator = 1, isBarrier = 1, mayLoad = 1,
346 hasExtraDefRegAllocReq = 1 in
347 def tPOP_RET : T1I<(outs), (ins pred:$p, reglist:$regs, variable_ops),
349 "pop${p}\t$regs", []>,
350 T1Misc<{1,1,0,?,?,?,?}> {
353 let Inst{8} = regs{15}; // registers = P:'0000000':register_list
354 let Inst{7-0} = regs{7-0};
357 // All calls clobber the non-callee saved registers. SP is marked as a use to
358 // prevent stack-pointer assignments that appear immediately before calls from
359 // potentially appearing dead.
361 // On non-Darwin platforms R9 is callee-saved.
362 Defs = [R0, R1, R2, R3, R12, LR,
363 D0, D1, D2, D3, D4, D5, D6, D7,
364 D16, D17, D18, D19, D20, D21, D22, D23,
365 D24, D25, D26, D27, D28, D29, D30, D31, CPSR, FPSCR],
367 // Also used for Thumb2
368 def tBL : TIx2<0b11110, 0b11, 1,
369 (outs), (ins bltarget:$func, variable_ops), IIC_Br,
371 [(ARMtcall tglobaladdr:$func)]>,
372 Requires<[IsThumb, IsNotDarwin]> {
374 let Inst{26} = func{23};
375 let Inst{25-16} = func{20-11};
376 let Inst{13} = func{22};
377 let Inst{11} = func{21};
378 let Inst{10-0} = func{10-0};
381 // ARMv5T and above, also used for Thumb2
382 def tBLXi : TIx2<0b11110, 0b11, 0,
383 (outs), (ins i32imm:$func, variable_ops), IIC_Br,
385 [(ARMcall tglobaladdr:$func)]>,
386 Requires<[IsThumb, HasV5T, IsNotDarwin]>;
388 // Also used for Thumb2
389 def tBLXr : TI<(outs), (ins GPR:$func, variable_ops), IIC_Br,
391 [(ARMtcall GPR:$func)]>,
392 Requires<[IsThumb, HasV5T, IsNotDarwin]>,
393 T1Special<{1,1,1,?}>; // A6.2.3 & A8.6.24;
396 // FIXME: Should be a pseudo.
397 let isCodeGenOnly = 1 in
398 def tBX : TIx2<{?,?,?,?,?}, {?,?}, ?,
399 (outs), (ins tGPR:$func, variable_ops), IIC_Br,
400 "mov\tlr, pc\n\tbx\t$func",
401 [(ARMcall_nolink tGPR:$func)]>,
402 Requires<[IsThumb, IsThumb1Only, IsNotDarwin]>;
406 // On Darwin R9 is call-clobbered.
407 // R7 is marked as a use to prevent frame-pointer assignments from being
408 // moved above / below calls.
409 Defs = [R0, R1, R2, R3, R9, R12, LR,
410 D0, D1, D2, D3, D4, D5, D6, D7,
411 D16, D17, D18, D19, D20, D21, D22, D23,
412 D24, D25, D26, D27, D28, D29, D30, D31, CPSR, FPSCR],
414 // Also used for Thumb2
415 def tBLr9 : TIx2<0b11110, 0b11, 1,
416 (outs), (ins pred:$p, bltarget:$func, variable_ops), IIC_Br,
418 [(ARMtcall tglobaladdr:$func)]>,
419 Requires<[IsThumb, IsDarwin]> {
421 let Inst{26} = func{23};
422 let Inst{25-16} = func{20-11};
423 let Inst{13} = func{22};
424 let Inst{11} = func{21};
425 let Inst{10-0} = func{10-0};
428 // ARMv5T and above, also used for Thumb2
429 def tBLXi_r9 : TIx2<0b11110, 0b11, 0,
430 (outs), (ins pred:$p, i32imm:$func, variable_ops), IIC_Br,
432 [(ARMcall tglobaladdr:$func)]>,
433 Requires<[IsThumb, HasV5T, IsDarwin]>;
435 // Also used for Thumb2
436 def tBLXr_r9 : TI<(outs), (ins pred:$p, GPR:$func, variable_ops), IIC_Br,
438 [(ARMtcall GPR:$func)]>,
439 Requires<[IsThumb, HasV5T, IsDarwin]>,
440 T1Special<{1,1,1,?}> {
443 let Inst{6-3} = func;
444 let Inst{2-0} = 0b000;
448 let isCodeGenOnly = 1 in
449 // FIXME: Should be a pseudo.
450 def tBXr9 : TIx2<{?,?,?,?,?}, {?,?}, ?,
451 (outs), (ins tGPR:$func, variable_ops), IIC_Br,
452 "mov\tlr, pc\n\tbx\t$func",
453 [(ARMcall_nolink tGPR:$func)]>,
454 Requires<[IsThumb, IsThumb1Only, IsDarwin]>;
457 let isBranch = 1, isTerminator = 1, isBarrier = 1 in {
458 let isPredicable = 1 in
459 def tB : T1I<(outs), (ins brtarget:$target), IIC_Br,
460 "b\t$target", [(br bb:$target)]>,
461 T1Encoding<{1,1,1,0,0,?}>;
465 def tBfar : TIx2<0b11110, 0b11, 1, (outs), (ins brtarget:$target), IIC_Br,
468 def tBR_JTr : tPseudoInst<(outs),
469 (ins tGPR:$target, i32imm:$jt, i32imm:$id),
471 [(ARMbrjt tGPR:$target, tjumptable:$jt, imm:$id)]> {
472 list<Predicate> Predicates = [IsThumb, IsThumb1Only];
476 // FIXME: should be able to write a pattern for ARMBrcond, but can't use
477 // a two-value operand where a dag node expects two operands. :(
478 let isBranch = 1, isTerminator = 1 in
479 def tBcc : T1I<(outs), (ins brtarget:$target, pred:$cc), IIC_Br,
481 [/*(ARMbrcond bb:$target, imm:$cc)*/]>,
482 T1Encoding<{1,1,0,1,?,?}>;
484 // Compare and branch on zero / non-zero
485 let isBranch = 1, isTerminator = 1 in {
486 def tCBZ : T1I<(outs), (ins tGPR:$Rn, brtarget:$target), IIC_Br,
487 "cbz\t$Rn, $target", []>,
488 T1Misc<{0,0,?,1,?,?,?}> {
492 let Inst{9} = target{5};
493 let Inst{7-3} = target{4-0};
497 def tCBNZ : T1I<(outs), (ins tGPR:$cmp, brtarget:$target), IIC_Br,
498 "cbnz\t$cmp, $target", []>,
499 T1Misc<{1,0,?,1,?,?,?}> {
503 let Inst{9} = target{5};
504 let Inst{7-3} = target{4-0};
509 // A8.6.218 Supervisor Call (Software Interrupt) -- for disassembly only
510 // A8.6.16 B: Encoding T1
511 // If Inst{11-8} == 0b1111 then SEE SVC
512 let isCall = 1, Uses = [SP] in
513 def tSVC : T1pI<(outs), (ins i32imm:$imm), IIC_Br,
514 "svc", "\t$imm", []>, Encoding16 {
516 let Inst{15-12} = 0b1101;
517 let Inst{11-8} = 0b1111;
521 // The assembler uses 0xDEFE for a trap instruction.
522 let isBarrier = 1, isTerminator = 1 in
523 def tTRAP : TI<(outs), (ins), IIC_Br,
524 "trap", [(trap)]>, Encoding16 {
528 //===----------------------------------------------------------------------===//
529 // Load Store Instructions.
532 let canFoldAsLoad = 1, isReMaterializable = 1 in
533 def tLDR : // A8.6.60
534 T1pILdStEncode<0b100, (outs tGPR:$Rt), (ins t_addrmode_s4:$addr),
535 AddrModeT1_4, IIC_iLoad_r,
536 "ldr", "\t$Rt, $addr",
537 [(set tGPR:$Rt, (load t_addrmode_s4:$addr))]>;
539 def tLDRi: // A8.6.57
540 T1pILdStEncodeImm<0b0110, 1, (outs tGPR:$Rt), (ins t_addrmode_s4:$addr),
541 AddrModeT1_4, IIC_iLoad_r,
542 "ldr", "\t$Rt, $addr",
545 def tLDRB : // A8.6.64
546 T1pILdStEncode<0b110, (outs tGPR:$Rt), (ins t_addrmode_s1:$addr),
547 AddrModeT1_1, IIC_iLoad_bh_r,
548 "ldrb", "\t$Rt, $addr",
549 [(set tGPR:$Rt, (zextloadi8 t_addrmode_s1:$addr))]>;
551 def tLDRBi : // A8.6.61
552 T1pILdStEncodeImm<0b0111, 1, (outs tGPR:$dst), (ins t_addrmode_s1:$addr),
553 AddrModeT1_1, IIC_iLoad_bh_r,
554 "ldrb", "\t$dst, $addr",
557 def tLDRH : // A8.6.76
558 T1pILdStEncode<0b101, (outs tGPR:$dst), (ins t_addrmode_s2:$addr),
559 AddrModeT1_2, IIC_iLoad_bh_r,
560 "ldrh", "\t$dst, $addr",
561 [(set tGPR:$dst, (zextloadi16 t_addrmode_s2:$addr))]>;
563 def tLDRHi: // A8.6.73
564 T1pILdStEncodeImm<0b1000, 1, (outs tGPR:$dst), (ins t_addrmode_s2:$addr),
565 AddrModeT1_2, IIC_iLoad_bh_r,
566 "ldrh", "\t$dst, $addr",
569 let AddedComplexity = 10 in
570 def tLDRSB : // A8.6.80
571 T1pILdStEncode<0b011, (outs tGPR:$dst), (ins t_addrmode_rr:$addr),
572 AddrModeT1_1, IIC_iLoad_bh_r,
573 "ldrsb", "\t$dst, $addr",
574 [(set tGPR:$dst, (sextloadi8 t_addrmode_rr:$addr))]>;
576 let AddedComplexity = 10 in
577 def tLDRSH : // A8.6.84
578 T1pILdStEncode<0b111, (outs tGPR:$dst), (ins t_addrmode_rr:$addr),
579 AddrModeT1_2, IIC_iLoad_bh_r,
580 "ldrsh", "\t$dst, $addr",
581 [(set tGPR:$dst, (sextloadi16 t_addrmode_rr:$addr))]>;
583 let canFoldAsLoad = 1 in
584 def tLDRspi : T1pIs<(outs tGPR:$dst), (ins t_addrmode_sp:$addr), IIC_iLoad_i,
585 "ldr", "\t$dst, $addr",
586 [(set tGPR:$dst, (load t_addrmode_sp:$addr))]>,
589 // Special instruction for restore. It cannot clobber condition register
590 // when it's expanded by eliminateCallFramePseudoInstr().
591 let canFoldAsLoad = 1, mayLoad = 1, neverHasSideEffects = 1 in
592 def tRestore : T1pIs<(outs tGPR:$dst), (ins t_addrmode_sp:$addr), IIC_iLoad_i,
593 "ldr", "\t$dst, $addr", []>,
597 // FIXME: Use ldr.n to work around a Darwin assembler bug.
598 let canFoldAsLoad = 1, isReMaterializable = 1 in
599 def tLDRpci : T1pIs<(outs tGPR:$Rt), (ins i32imm:$addr), IIC_iLoad_i,
600 "ldr", ".n\t$Rt, $addr",
601 [(set tGPR:$Rt, (load (ARMWrapper tconstpool:$addr)))]>,
602 T1Encoding<{0,1,0,0,1,?}> {
606 // FIXME: Finish for the addr.
609 // Special LDR for loads from non-pc-relative constpools.
610 let canFoldAsLoad = 1, mayLoad = 1, neverHasSideEffects = 1,
611 isReMaterializable = 1 in
612 def tLDRcp : T1pIs<(outs tGPR:$dst), (ins i32imm:$addr), IIC_iLoad_i,
613 "ldr", "\t$dst, $addr", []>,
616 def tSTR : // A8.6.194
617 T1pILdStEncode<0b000, (outs), (ins tGPR:$src, t_addrmode_s4:$addr),
618 AddrModeT1_4, IIC_iStore_r,
619 "str", "\t$src, $addr",
620 [(store tGPR:$src, t_addrmode_s4:$addr)]>;
622 def tSTRi : // A8.6.192
623 T1pILdStEncodeImm<0b0110, 0, (outs), (ins tGPR:$src, t_addrmode_s4:$addr),
624 AddrModeT1_4, IIC_iStore_r,
625 "str", "\t$src, $addr",
628 def tSTRB : // A8.6.197
629 T1pILdStEncode<0b010, (outs), (ins tGPR:$src, t_addrmode_s1:$addr),
630 AddrModeT1_1, IIC_iStore_bh_r,
631 "strb", "\t$src, $addr",
632 [(truncstorei8 tGPR:$src, t_addrmode_s1:$addr)]>;
634 def tSTRBi : // A8.6.195
635 T1pILdStEncodeImm<0b0111, 0, (outs), (ins tGPR:$src, t_addrmode_s1:$addr),
636 AddrModeT1_1, IIC_iStore_bh_r,
637 "strb", "\t$src, $addr",
640 def tSTRH : // A8.6.207
641 T1pILdStEncode<0b001, (outs), (ins tGPR:$src, t_addrmode_s2:$addr),
642 AddrModeT1_2, IIC_iStore_bh_r,
643 "strh", "\t$src, $addr",
644 [(truncstorei16 tGPR:$src, t_addrmode_s2:$addr)]>;
646 def tSTRHi : // A8.6.205
647 T1pILdStEncodeImm<0b1000, 0, (outs), (ins tGPR:$src, t_addrmode_s2:$addr),
648 AddrModeT1_2, IIC_iStore_bh_r,
649 "strh", "\t$src, $addr",
652 def tSTRspi : T1pIs<(outs), (ins tGPR:$src, t_addrmode_sp:$addr), IIC_iStore_i,
653 "str", "\t$src, $addr",
654 [(store tGPR:$src, t_addrmode_sp:$addr)]>,
657 let mayStore = 1, neverHasSideEffects = 1 in
658 // Special instruction for spill. It cannot clobber condition register when it's
659 // expanded by eliminateCallFramePseudoInstr().
660 def tSpill : T1pIs<(outs), (ins tGPR:$src, t_addrmode_sp:$addr), IIC_iStore_i,
661 "str", "\t$src, $addr", []>,
664 //===----------------------------------------------------------------------===//
665 // Load / store multiple Instructions.
668 multiclass thumb_ldst_mult<string asm, InstrItinClass itin,
669 InstrItinClass itin_upd, bits<6> T1Enc,
672 T1I<(outs), (ins GPR:$Rn, pred:$p, reglist:$regs, variable_ops),
673 itin, !strconcat(asm, "ia${p}\t$Rn, $regs"), []>,
678 let Inst{7-0} = regs;
681 T1It<(outs GPR:$wb), (ins GPR:$Rn, pred:$p, reglist:$regs, variable_ops),
682 itin_upd, !strconcat(asm, "ia${p}\t$Rn!, $regs"), "$Rn = $wb", []>,
687 let Inst{7-0} = regs;
691 // These require base address to be written back or one of the loaded regs.
692 let neverHasSideEffects = 1 in {
694 let mayLoad = 1, hasExtraDefRegAllocReq = 1 in
695 defm tLDM : thumb_ldst_mult<"ldm", IIC_iLoad_m, IIC_iLoad_mu,
698 let mayStore = 1, hasExtraSrcRegAllocReq = 1 in
699 defm tSTM : thumb_ldst_mult<"stm", IIC_iStore_m, IIC_iStore_mu,
702 } // neverHasSideEffects
704 let mayLoad = 1, Uses = [SP], Defs = [SP], hasExtraDefRegAllocReq = 1 in
705 def tPOP : T1I<(outs), (ins pred:$p, reglist:$regs, variable_ops),
707 "pop${p}\t$regs", []>,
708 T1Misc<{1,1,0,?,?,?,?}> {
710 let Inst{8} = regs{15};
711 let Inst{7-0} = regs{7-0};
714 let mayStore = 1, Uses = [SP], Defs = [SP], hasExtraSrcRegAllocReq = 1 in
715 def tPUSH : T1I<(outs), (ins pred:$p, reglist:$regs, variable_ops),
717 "push${p}\t$regs", []>,
718 T1Misc<{0,1,0,?,?,?,?}> {
720 let Inst{8} = regs{14};
721 let Inst{7-0} = regs{7-0};
724 //===----------------------------------------------------------------------===//
725 // Arithmetic Instructions.
728 // Helper classes for encoding T1pI patterns:
729 class T1pIDPEncode<bits<4> opA, dag oops, dag iops, InstrItinClass itin,
730 string opc, string asm, list<dag> pattern>
731 : T1pI<oops, iops, itin, opc, asm, pattern>,
732 T1DataProcessing<opA> {
738 class T1pIMiscEncode<bits<7> opA, dag oops, dag iops, InstrItinClass itin,
739 string opc, string asm, list<dag> pattern>
740 : T1pI<oops, iops, itin, opc, asm, pattern>,
748 // Helper classes for encoding T1sI patterns:
749 class T1sIDPEncode<bits<4> opA, dag oops, dag iops, InstrItinClass itin,
750 string opc, string asm, list<dag> pattern>
751 : T1sI<oops, iops, itin, opc, asm, pattern>,
752 T1DataProcessing<opA> {
758 class T1sIGenEncode<bits<5> opA, dag oops, dag iops, InstrItinClass itin,
759 string opc, string asm, list<dag> pattern>
760 : T1sI<oops, iops, itin, opc, asm, pattern>,
769 class T1sIGenEncodeImm<bits<5> opA, dag oops, dag iops, InstrItinClass itin,
770 string opc, string asm, list<dag> pattern>
771 : T1sI<oops, iops, itin, opc, asm, pattern>,
779 // Helper classes for encoding T1sIt patterns:
780 class T1sItDPEncode<bits<4> opA, dag oops, dag iops, InstrItinClass itin,
781 string opc, string asm, list<dag> pattern>
782 : T1sIt<oops, iops, itin, opc, asm, pattern>,
783 T1DataProcessing<opA> {
789 class T1sItGenEncodeImm<bits<5> opA, dag oops, dag iops, InstrItinClass itin,
790 string opc, string asm, list<dag> pattern>
791 : T1sIt<oops, iops, itin, opc, asm, pattern>,
795 let Inst{10-8} = Rdn;
796 let Inst{7-0} = imm8;
799 // Add with carry register
800 let isCommutable = 1, Uses = [CPSR] in
802 T1sItDPEncode<0b0101, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm), IIC_iALUr,
803 "adc", "\t$Rdn, $Rm",
804 [(set tGPR:$Rdn, (adde tGPR:$Rn, tGPR:$Rm))]>;
807 def tADDi3 : // A8.6.4 T1
808 T1sIGenEncodeImm<0b01110, (outs tGPR:$Rd), (ins tGPR:$Rm, i32imm:$imm3), IIC_iALUi,
809 "add", "\t$Rd, $Rm, $imm3",
810 [(set tGPR:$Rd, (add tGPR:$Rm, imm0_7:$imm3))]> {
812 let Inst{8-6} = imm3;
815 def tADDi8 : // A8.6.4 T2
816 T1sItGenEncodeImm<{1,1,0,?,?}, (outs tGPR:$Rdn), (ins tGPR:$Rn, i32imm:$imm8),
818 "add", "\t$Rdn, $imm8",
819 [(set tGPR:$Rdn, (add tGPR:$Rn, imm8_255:$imm8))]>;
822 let isCommutable = 1 in
823 def tADDrr : // A8.6.6 T1
824 T1sIGenEncode<0b01100, (outs tGPR:$Rd), (ins tGPR:$Rn, tGPR:$Rm),
826 "add", "\t$Rd, $Rn, $Rm",
827 [(set tGPR:$Rd, (add tGPR:$Rn, tGPR:$Rm))]>;
829 let neverHasSideEffects = 1 in
830 def tADDhirr : T1pIt<(outs GPR:$Rdn), (ins GPR:$Rn, GPR:$Rm), IIC_iALUr,
831 "add", "\t$Rdn, $Rm", []>,
832 T1Special<{0,0,?,?}> {
836 let Inst{7} = Rdn{3};
838 let Inst{2-0} = Rdn{2-0};
842 let isCommutable = 1 in
843 def tAND : // A8.6.12
844 T1sItDPEncode<0b0000, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
846 "and", "\t$Rdn, $Rm",
847 [(set tGPR:$Rdn, (and tGPR:$Rn, tGPR:$Rm))]>;
850 def tASRri : // A8.6.14
851 T1sIGenEncodeImm<{0,1,0,?,?}, (outs tGPR:$Rd), (ins tGPR:$Rm, i32imm:$imm5),
853 "asr", "\t$Rd, $Rm, $imm5",
854 [(set tGPR:$Rd, (sra tGPR:$Rm, (i32 imm:$imm5)))]> {
856 let Inst{10-6} = imm5;
860 def tASRrr : // A8.6.15
861 T1sItDPEncode<0b0100, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
863 "asr", "\t$Rdn, $Rm",
864 [(set tGPR:$Rdn, (sra tGPR:$Rn, tGPR:$Rm))]>;
867 def tBIC : // A8.6.20
868 T1sItDPEncode<0b1110, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
870 "bic", "\t$Rdn, $Rm",
871 [(set tGPR:$Rdn, (and tGPR:$Rn, (not tGPR:$Rm)))]>;
874 let isCompare = 1, Defs = [CPSR] in {
875 //FIXME: Disable CMN, as CCodes are backwards from compare expectations
876 // Compare-to-zero still works out, just not the relationals
877 //def tCMN : // A8.6.33
878 // T1pIDPEncode<0b1011, (outs), (ins tGPR:$lhs, tGPR:$rhs),
880 // "cmn", "\t$lhs, $rhs",
881 // [(ARMcmp tGPR:$lhs, (ineg tGPR:$rhs))]>;
883 def tCMNz : // A8.6.33
884 T1pIDPEncode<0b1011, (outs), (ins tGPR:$Rn, tGPR:$Rm),
887 [(ARMcmpZ tGPR:$Rn, (ineg tGPR:$Rm))]>;
889 } // isCompare = 1, Defs = [CPSR]
892 let isCompare = 1, Defs = [CPSR] in {
893 def tCMPi8 : T1pI<(outs), (ins tGPR:$Rn, i32imm:$imm8), IIC_iCMPi,
894 "cmp", "\t$Rn, $imm8",
895 [(ARMcmp tGPR:$Rn, imm0_255:$imm8)]>,
896 T1General<{1,0,1,?,?}> {
901 let Inst{7-0} = imm8;
904 def tCMPzi8 : T1pI<(outs), (ins tGPR:$Rn, i32imm:$imm8), IIC_iCMPi,
905 "cmp", "\t$Rn, $imm8",
906 [(ARMcmpZ tGPR:$Rn, imm0_255:$imm8)]>,
907 T1General<{1,0,1,?,?}> {
911 let Inst{7-0} = 0x00;
915 def tCMPr : // A8.6.36 T1
916 T1pIDPEncode<0b1010, (outs), (ins tGPR:$Rn, tGPR:$Rm),
919 [(ARMcmp tGPR:$Rn, tGPR:$Rm)]>;
921 def tCMPzr : // A8.6.36 T1
922 T1pIDPEncode<0b1010, (outs), (ins tGPR:$Rn, tGPR:$Rm), IIC_iCMPr,
924 [(ARMcmpZ tGPR:$Rn, tGPR:$Rm)]>;
926 def tCMPhir : T1pI<(outs), (ins GPR:$Rn, GPR:$Rm), IIC_iCMPr,
927 "cmp", "\t$Rn, $Rm", []>,
928 T1Special<{0,1,?,?}> {
934 let Inst{2-0} = Rn{2-0};
936 def tCMPzhir : T1pI<(outs), (ins GPR:$lhs, GPR:$rhs), IIC_iCMPr,
937 "cmp", "\t$lhs, $rhs", []>,
938 T1Special<{0,1,?,?}> {
944 let Inst{2-0} = Rn{2-0};
947 } // isCompare = 1, Defs = [CPSR]
951 let isCommutable = 1 in
952 def tEOR : // A8.6.45
953 T1sItDPEncode<0b0001, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
955 "eor", "\t$Rdn, $Rm",
956 [(set tGPR:$Rdn, (xor tGPR:$Rn, tGPR:$Rm))]>;
959 def tLSLri : // A8.6.88
960 T1sIGenEncodeImm<{0,0,0,?,?}, (outs tGPR:$Rd), (ins tGPR:$Rm, i32imm:$imm5),
962 "lsl", "\t$Rd, $Rm, $imm5",
963 [(set tGPR:$Rd, (shl tGPR:$Rm, (i32 imm:$imm5)))]> {
965 let Inst{10-6} = imm5;
969 def tLSLrr : // A8.6.89
970 T1sItDPEncode<0b0010, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
972 "lsl", "\t$Rdn, $Rm",
973 [(set tGPR:$Rdn, (shl tGPR:$Rn, tGPR:$Rm))]>;
976 def tLSRri : // A8.6.90
977 T1sIGenEncodeImm<{0,0,1,?,?}, (outs tGPR:$Rd), (ins tGPR:$Rm, i32imm:$imm5),
979 "lsr", "\t$Rd, $Rm, $imm5",
980 [(set tGPR:$Rd, (srl tGPR:$Rm, (i32 imm:$imm5)))]> {
982 let Inst{10-6} = imm5;
986 def tLSRrr : // A8.6.91
987 T1sItDPEncode<0b0011, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
989 "lsr", "\t$Rdn, $Rm",
990 [(set tGPR:$Rdn, (srl tGPR:$Rn, tGPR:$Rm))]>;
994 def tMOVi8 : T1sI<(outs tGPR:$Rd), (ins i32imm:$imm8), IIC_iMOVi,
995 "mov", "\t$Rd, $imm8",
996 [(set tGPR:$Rd, imm0_255:$imm8)]>,
997 T1General<{1,0,0,?,?}> {
1001 let Inst{10-8} = Rd;
1002 let Inst{7-0} = imm8;
1005 // TODO: A7-73: MOV(2) - mov setting flag.
1007 let neverHasSideEffects = 1 in {
1008 // FIXME: Make this predicable.
1009 def tMOVr : T1I<(outs tGPR:$Rd), (ins tGPR:$Rm), IIC_iMOVr,
1010 "mov\t$Rd, $Rm", []>,
1015 // Bits {7-6} are encoded by the T1Special value.
1016 let Inst{5-3} = Rm{2-0};
1017 let Inst{2-0} = Rd{2-0};
1019 let Defs = [CPSR] in
1020 def tMOVSr : T1I<(outs tGPR:$Rd), (ins tGPR:$Rm), IIC_iMOVr,
1021 "movs\t$Rd, $Rm", []>, Encoding16 {
1025 let Inst{15-6} = 0b0000000000;
1030 // FIXME: Make these predicable.
1031 def tMOVgpr2tgpr : T1I<(outs tGPR:$Rd), (ins GPR:$Rm), IIC_iMOVr,
1032 "mov\t$Rd, $Rm", []>,
1033 T1Special<{1,0,0,?}> {
1037 // Bit {7} is encoded by the T1Special value.
1039 let Inst{2-0} = Rd{2-0};
1041 def tMOVtgpr2gpr : T1I<(outs GPR:$Rd), (ins tGPR:$Rm), IIC_iMOVr,
1042 "mov\t$Rd, $Rm", []>,
1043 T1Special<{1,0,?,0}> {
1047 // Bit {6} is encoded by the T1Special value.
1048 let Inst{7} = Rd{3};
1049 let Inst{5-3} = Rm{2-0};
1050 let Inst{2-0} = Rd{2-0};
1052 def tMOVgpr2gpr : T1I<(outs GPR:$Rd), (ins GPR:$Rm), IIC_iMOVr,
1053 "mov\t$Rd, $Rm", []>,
1054 T1Special<{1,0,?,?}> {
1058 let Inst{7} = Rd{3};
1060 let Inst{2-0} = Rd{2-0};
1062 } // neverHasSideEffects
1064 // Multiply register
1065 let isCommutable = 1 in
1066 def tMUL : // A8.6.105 T1
1067 T1sItDPEncode<0b1101, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
1069 "mul", "\t$Rdn, $Rm, $Rdn",
1070 [(set tGPR:$Rdn, (mul tGPR:$Rn, tGPR:$Rm))]>;
1072 // Move inverse register
1073 def tMVN : // A8.6.107
1074 T1sIDPEncode<0b1111, (outs tGPR:$Rd), (ins tGPR:$Rn), IIC_iMVNr,
1075 "mvn", "\t$Rd, $Rn",
1076 [(set tGPR:$Rd, (not tGPR:$Rn))]>;
1078 // Bitwise or register
1079 let isCommutable = 1 in
1080 def tORR : // A8.6.114
1081 T1sItDPEncode<0b1100, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
1083 "orr", "\t$Rdn, $Rm",
1084 [(set tGPR:$Rdn, (or tGPR:$Rn, tGPR:$Rm))]>;
1087 def tREV : // A8.6.134
1088 T1pIMiscEncode<{1,0,1,0,0,0,?}, (outs tGPR:$Rd), (ins tGPR:$Rm),
1090 "rev", "\t$Rd, $Rm",
1091 [(set tGPR:$Rd, (bswap tGPR:$Rm))]>,
1092 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1094 def tREV16 : // A8.6.135
1095 T1pIMiscEncode<{1,0,1,0,0,1,?}, (outs tGPR:$Rd), (ins tGPR:$Rm),
1097 "rev16", "\t$Rd, $Rm",
1099 (or (and (srl tGPR:$Rm, (i32 8)), 0xFF),
1100 (or (and (shl tGPR:$Rm, (i32 8)), 0xFF00),
1101 (or (and (srl tGPR:$Rm, (i32 8)), 0xFF0000),
1102 (and (shl tGPR:$Rm, (i32 8)), 0xFF000000)))))]>,
1103 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1105 def tREVSH : // A8.6.136
1106 T1pIMiscEncode<{1,0,1,0,1,1,?}, (outs tGPR:$Rd), (ins tGPR:$Rm),
1108 "revsh", "\t$Rd, $Rm",
1111 (or (srl (and tGPR:$Rm, 0xFF00), (i32 8)),
1112 (shl tGPR:$Rm, (i32 8))), i16))]>,
1113 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1115 // Rotate right register
1116 def tROR : // A8.6.139
1117 T1sItDPEncode<0b0111, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
1119 "ror", "\t$Rdn, $Rm",
1120 [(set tGPR:$Rdn, (rotr tGPR:$Rn, tGPR:$Rm))]>;
1123 def tRSB : // A8.6.141
1124 T1sIDPEncode<0b1001, (outs tGPR:$Rd), (ins tGPR:$Rn),
1126 "rsb", "\t$Rd, $Rn, #0",
1127 [(set tGPR:$Rd, (ineg tGPR:$Rn))]>;
1129 // Subtract with carry register
1130 let Uses = [CPSR] in
1131 def tSBC : // A8.6.151
1132 T1sItDPEncode<0b0110, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
1134 "sbc", "\t$Rdn, $Rm",
1135 [(set tGPR:$Rdn, (sube tGPR:$Rn, tGPR:$Rm))]>;
1137 // Subtract immediate
1138 def tSUBi3 : // A8.6.210 T1
1139 T1sIGenEncodeImm<0b01111, (outs tGPR:$Rd), (ins tGPR:$Rm, i32imm:$imm3),
1141 "sub", "\t$Rd, $Rm, $imm3",
1142 [(set tGPR:$Rd, (add tGPR:$Rm, imm0_7_neg:$imm3))]> {
1144 let Inst{8-6} = imm3;
1147 def tSUBi8 : // A8.6.210 T2
1148 T1sItGenEncodeImm<{1,1,1,?,?}, (outs tGPR:$Rdn), (ins tGPR:$Rn, i32imm:$imm8),
1150 "sub", "\t$Rdn, $imm8",
1151 [(set tGPR:$Rdn, (add tGPR:$Rn, imm8_255_neg:$imm8))]>;
1153 // Subtract register
1154 def tSUBrr : // A8.6.212
1155 T1sIGenEncode<0b01101, (outs tGPR:$Rd), (ins tGPR:$Rn, tGPR:$Rm),
1157 "sub", "\t$Rd, $Rn, $Rm",
1158 [(set tGPR:$Rd, (sub tGPR:$Rn, tGPR:$Rm))]>;
1160 // TODO: A7-96: STMIA - store multiple.
1163 def tSXTB : // A8.6.222
1164 T1pIMiscEncode<{0,0,1,0,0,1,?}, (outs tGPR:$Rd), (ins tGPR:$Rm),
1166 "sxtb", "\t$Rd, $Rm",
1167 [(set tGPR:$Rd, (sext_inreg tGPR:$Rm, i8))]>,
1168 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1170 // Sign-extend short
1171 def tSXTH : // A8.6.224
1172 T1pIMiscEncode<{0,0,1,0,0,0,?}, (outs tGPR:$Rd), (ins tGPR:$Rm),
1174 "sxth", "\t$Rd, $Rm",
1175 [(set tGPR:$Rd, (sext_inreg tGPR:$Rm, i16))]>,
1176 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1179 let isCompare = 1, isCommutable = 1, Defs = [CPSR] in
1180 def tTST : // A8.6.230
1181 T1pIDPEncode<0b1000, (outs), (ins tGPR:$Rn, tGPR:$Rm), IIC_iTSTr,
1182 "tst", "\t$Rn, $Rm",
1183 [(ARMcmpZ (and_su tGPR:$Rn, tGPR:$Rm), 0)]>;
1186 def tUXTB : // A8.6.262
1187 T1pIMiscEncode<{0,0,1,0,1,1,?}, (outs tGPR:$Rd), (ins tGPR:$Rm),
1189 "uxtb", "\t$Rd, $Rm",
1190 [(set tGPR:$Rd, (and tGPR:$Rm, 0xFF))]>,
1191 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1193 // Zero-extend short
1194 def tUXTH : // A8.6.264
1195 T1pIMiscEncode<{0,0,1,0,1,0,?}, (outs tGPR:$Rd), (ins tGPR:$Rm),
1197 "uxth", "\t$Rd, $Rm",
1198 [(set tGPR:$Rd, (and tGPR:$Rm, 0xFFFF))]>,
1199 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1201 // Conditional move tMOVCCr - Used to implement the Thumb SELECT_CC operation.
1202 // Expanded after instruction selection into a branch sequence.
1203 let usesCustomInserter = 1 in // Expanded after instruction selection.
1204 def tMOVCCr_pseudo :
1205 PseudoInst<(outs tGPR:$dst), (ins tGPR:$false, tGPR:$true, pred:$cc),
1207 [/*(set tGPR:$dst, (ARMcmov tGPR:$false, tGPR:$true, imm:$cc))*/]>;
1210 // 16-bit movcc in IT blocks for Thumb2.
1211 let neverHasSideEffects = 1 in {
1212 def tMOVCCr : T1pIt<(outs GPR:$Rdn), (ins GPR:$Rn, GPR:$Rm), IIC_iCMOVr,
1213 "mov", "\t$Rdn, $Rm", []>,
1214 T1Special<{1,0,?,?}> {
1217 let Inst{7} = Rdn{3};
1219 let Inst{2-0} = Rdn{2-0};
1222 let isMoveImm = 1 in
1223 def tMOVCCi : T1pIt<(outs tGPR:$Rdn), (ins tGPR:$Rn, i32imm:$Rm), IIC_iCMOVi,
1224 "mov", "\t$Rdn, $Rm", []>,
1225 T1General<{1,0,0,?,?}> {
1228 let Inst{10-8} = Rdn;
1232 } // neverHasSideEffects
1234 // tLEApcrel - Load a pc-relative address into a register without offending the
1236 let neverHasSideEffects = 1, isReMaterializable = 1 in
1237 def tLEApcrel : T1I<(outs tGPR:$Rd), (ins i32imm:$label, pred:$p), IIC_iALUi,
1238 "adr${p}\t$Rd, #$label", []>,
1239 T1Encoding<{1,0,1,0,0,?}> {
1242 let Inst{10-8} = Rd;
1243 // FIXME: Add label encoding/fixup
1246 def tLEApcrelJT : T1I<(outs tGPR:$Rd),
1247 (ins i32imm:$label, nohash_imm:$id, pred:$p),
1248 IIC_iALUi, "adr${p}\t$Rd, #${label}_${id}", []>,
1249 T1Encoding<{1,0,1,0,0,?}> {
1252 let Inst{10-8} = Rd;
1253 // FIXME: Add label encoding/fixup
1256 //===----------------------------------------------------------------------===//
1260 // __aeabi_read_tp preserves the registers r1-r3.
1261 let isCall = 1, Defs = [R0, LR], Uses = [SP] in
1262 def tTPsoft : TIx2<0b11110, 0b11, 1, (outs), (ins), IIC_Br,
1263 "bl\t__aeabi_read_tp",
1264 [(set R0, ARMthread_pointer)]> {
1265 // Encoding is 0xf7fffffe.
1266 let Inst = 0xf7fffffe;
1269 //===----------------------------------------------------------------------===//
1270 // SJLJ Exception handling intrinsics
1273 // eh_sjlj_setjmp() is an instruction sequence to store the return address and
1274 // save #0 in R0 for the non-longjmp case. Since by its nature we may be coming
1275 // from some other function to get here, and we're using the stack frame for the
1276 // containing function to save/restore registers, we can't keep anything live in
1277 // regs across the eh_sjlj_setjmp(), else it will almost certainly have been
1278 // tromped upon when we get here from a longjmp(). We force everthing out of
1279 // registers except for our own input by listing the relevant registers in
1280 // Defs. By doing so, we also cause the prologue/epilogue code to actively
1281 // preserve all of the callee-saved resgisters, which is exactly what we want.
1282 // $val is a scratch register for our use.
1283 let Defs = [ R0, R1, R2, R3, R4, R5, R6, R7, R12 ],
1284 hasSideEffects = 1, isBarrier = 1, isCodeGenOnly = 1 in
1285 def tInt_eh_sjlj_setjmp : ThumbXI<(outs),(ins tGPR:$src, tGPR:$val),
1286 AddrModeNone, SizeSpecial, NoItinerary, "","",
1287 [(set R0, (ARMeh_sjlj_setjmp tGPR:$src, tGPR:$val))]>;
1289 // FIXME: Non-Darwin version(s)
1290 let isBarrier = 1, hasSideEffects = 1, isTerminator = 1, isCodeGenOnly = 1,
1291 Defs = [ R7, LR, SP ] in
1292 def tInt_eh_sjlj_longjmp : XI<(outs), (ins GPR:$src, GPR:$scratch),
1293 AddrModeNone, SizeSpecial, IndexModeNone,
1294 Pseudo, NoItinerary, "", "",
1295 [(ARMeh_sjlj_longjmp GPR:$src, GPR:$scratch)]>,
1296 Requires<[IsThumb, IsDarwin]>;
1298 //===----------------------------------------------------------------------===//
1299 // Non-Instruction Patterns
1303 def : T1Pat<(addc tGPR:$lhs, imm0_7:$rhs),
1304 (tADDi3 tGPR:$lhs, imm0_7:$rhs)>;
1305 def : T1Pat<(addc tGPR:$lhs, imm8_255:$rhs),
1306 (tADDi8 tGPR:$lhs, imm8_255:$rhs)>;
1307 def : T1Pat<(addc tGPR:$lhs, tGPR:$rhs),
1308 (tADDrr tGPR:$lhs, tGPR:$rhs)>;
1310 // Subtract with carry
1311 def : T1Pat<(addc tGPR:$lhs, imm0_7_neg:$rhs),
1312 (tSUBi3 tGPR:$lhs, imm0_7_neg:$rhs)>;
1313 def : T1Pat<(addc tGPR:$lhs, imm8_255_neg:$rhs),
1314 (tSUBi8 tGPR:$lhs, imm8_255_neg:$rhs)>;
1315 def : T1Pat<(subc tGPR:$lhs, tGPR:$rhs),
1316 (tSUBrr tGPR:$lhs, tGPR:$rhs)>;
1318 // ConstantPool, GlobalAddress
1319 def : T1Pat<(ARMWrapper tglobaladdr :$dst), (tLEApcrel tglobaladdr :$dst)>;
1320 def : T1Pat<(ARMWrapper tconstpool :$dst), (tLEApcrel tconstpool :$dst)>;
1323 def : T1Pat<(ARMWrapperJT tjumptable:$dst, imm:$id),
1324 (tLEApcrelJT tjumptable:$dst, imm:$id)>;
1327 def : T1Pat<(ARMtcall texternalsym:$func), (tBL texternalsym:$func)>,
1328 Requires<[IsThumb, IsNotDarwin]>;
1329 def : T1Pat<(ARMtcall texternalsym:$func), (tBLr9 texternalsym:$func)>,
1330 Requires<[IsThumb, IsDarwin]>;
1332 def : Tv5Pat<(ARMcall texternalsym:$func), (tBLXi texternalsym:$func)>,
1333 Requires<[IsThumb, HasV5T, IsNotDarwin]>;
1334 def : Tv5Pat<(ARMcall texternalsym:$func), (tBLXi_r9 texternalsym:$func)>,
1335 Requires<[IsThumb, HasV5T, IsDarwin]>;
1337 // Indirect calls to ARM routines
1338 def : Tv5Pat<(ARMcall GPR:$dst), (tBLXr GPR:$dst)>,
1339 Requires<[IsThumb, HasV5T, IsNotDarwin]>;
1340 def : Tv5Pat<(ARMcall GPR:$dst), (tBLXr_r9 GPR:$dst)>,
1341 Requires<[IsThumb, HasV5T, IsDarwin]>;
1343 // zextload i1 -> zextload i8
1344 def : T1Pat<(zextloadi1 t_addrmode_s1:$addr),
1345 (tLDRB t_addrmode_s1:$addr)>;
1347 // extload -> zextload
1348 def : T1Pat<(extloadi1 t_addrmode_s1:$addr), (tLDRB t_addrmode_s1:$addr)>;
1349 def : T1Pat<(extloadi8 t_addrmode_s1:$addr), (tLDRB t_addrmode_s1:$addr)>;
1350 def : T1Pat<(extloadi16 t_addrmode_s2:$addr), (tLDRH t_addrmode_s2:$addr)>;
1352 // If it's impossible to use [r,r] address mode for sextload, select to
1353 // ldr{b|h} + sxt{b|h} instead.
1354 def : T1Pat<(sextloadi8 t_addrmode_s1:$addr),
1355 (tSXTB (tLDRB t_addrmode_s1:$addr))>,
1356 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1357 def : T1Pat<(sextloadi16 t_addrmode_s2:$addr),
1358 (tSXTH (tLDRH t_addrmode_s2:$addr))>,
1359 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1361 def : T1Pat<(sextloadi8 t_addrmode_s1:$addr),
1362 (tASRri (tLSLri (tLDRB t_addrmode_s1:$addr), 24), 24)>;
1363 def : T1Pat<(sextloadi16 t_addrmode_s1:$addr),
1364 (tASRri (tLSLri (tLDRH t_addrmode_s1:$addr), 16), 16)>;
1366 // Large immediate handling.
1369 def : T1Pat<(i32 thumb_immshifted:$src),
1370 (tLSLri (tMOVi8 (thumb_immshifted_val imm:$src)),
1371 (thumb_immshifted_shamt imm:$src))>;
1373 def : T1Pat<(i32 imm0_255_comp:$src),
1374 (tMVN (tMOVi8 (imm_comp_XFORM imm:$src)))>;
1376 // Pseudo instruction that combines ldr from constpool and add pc. This should
1377 // be expanded into two instructions late to allow if-conversion and
1379 let isReMaterializable = 1 in
1380 def tLDRpci_pic : PseudoInst<(outs GPR:$dst), (ins i32imm:$addr, pclabel:$cp),
1382 [(set GPR:$dst, (ARMpic_add (load (ARMWrapper tconstpool:$addr)),
1384 Requires<[IsThumb, IsThumb1Only]>;