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 t_bltarget : Operand<i32> {
78 let EncoderMethod = "getThumbBLTargetOpValue";
81 def MemModeThumbAsmOperand : AsmOperandClass {
82 let Name = "MemModeThumb";
83 let SuperClasses = [];
86 // t_addrmode_rr := reg + reg
88 def t_addrmode_rr : Operand<i32>,
89 ComplexPattern<i32, 2, "SelectThumbAddrModeRR", []> {
90 let PrintMethod = "printThumbAddrModeRROperand";
91 let MIOperandInfo = (ops tGPR:$base, tGPR:$offsreg);
94 // t_addrmode_s4 := reg + reg
97 def t_addrmode_s4 : Operand<i32>,
98 ComplexPattern<i32, 3, "SelectThumbAddrModeS4", []> {
99 let EncoderMethod = "getAddrModeS4OpValue";
100 let PrintMethod = "printThumbAddrModeS4Operand";
101 let MIOperandInfo = (ops tGPR:$base, i32imm:$offsimm, tGPR:$offsreg);
102 let ParserMatchClass = MemModeThumbAsmOperand;
105 // t_addrmode_s2 := reg + reg
108 def t_addrmode_s2 : Operand<i32>,
109 ComplexPattern<i32, 3, "SelectThumbAddrModeS2", []> {
110 let EncoderMethod = "getAddrModeS2OpValue";
111 let PrintMethod = "printThumbAddrModeS2Operand";
112 let MIOperandInfo = (ops tGPR:$base, i32imm:$offsimm, tGPR:$offsreg);
113 let ParserMatchClass = MemModeThumbAsmOperand;
116 // t_addrmode_s1 := reg + reg
119 def t_addrmode_s1 : Operand<i32>,
120 ComplexPattern<i32, 3, "SelectThumbAddrModeS1", []> {
121 let EncoderMethod = "getAddrModeS1OpValue";
122 let PrintMethod = "printThumbAddrModeS1Operand";
123 let MIOperandInfo = (ops tGPR:$base, i32imm:$offsimm, tGPR:$offsreg);
124 let ParserMatchClass = MemModeThumbAsmOperand;
127 // t_addrmode_sp := sp + imm8 * 4
129 def t_addrmode_sp : Operand<i32>,
130 ComplexPattern<i32, 2, "SelectThumbAddrModeSP", []> {
131 let PrintMethod = "printThumbAddrModeSPOperand";
132 let MIOperandInfo = (ops GPR:$base, i32imm:$offsimm);
133 let ParserMatchClass = MemModeThumbAsmOperand;
136 //===----------------------------------------------------------------------===//
137 // Miscellaneous Instructions.
140 // FIXME: Marking these as hasSideEffects is necessary to prevent machine DCE
141 // from removing one half of the matched pairs. That breaks PEI, which assumes
142 // these will always be in pairs, and asserts if it finds otherwise. Better way?
143 let Defs = [SP], Uses = [SP], hasSideEffects = 1 in {
144 def tADJCALLSTACKUP :
145 PseudoInst<(outs), (ins i32imm:$amt1, i32imm:$amt2), NoItinerary,
146 [(ARMcallseq_end imm:$amt1, imm:$amt2)]>,
147 Requires<[IsThumb, IsThumb1Only]>;
149 def tADJCALLSTACKDOWN :
150 PseudoInst<(outs), (ins i32imm:$amt), NoItinerary,
151 [(ARMcallseq_start imm:$amt)]>,
152 Requires<[IsThumb, IsThumb1Only]>;
155 // T1Disassembly - A simple class to make encoding some disassembly patterns
156 // easier and less verbose.
157 class T1Disassembly<bits<2> op1, bits<8> op2>
158 : T1Encoding<0b101111> {
163 def tNOP : T1pI<(outs), (ins), NoItinerary, "nop", "",
164 [/* For disassembly only; pattern left blank */]>,
165 T1Disassembly<0b11, 0x00>; // A8.6.110
167 def tYIELD : T1pI<(outs), (ins), NoItinerary, "yield", "",
168 [/* For disassembly only; pattern left blank */]>,
169 T1Disassembly<0b11, 0x10>; // A8.6.410
171 def tWFE : T1pI<(outs), (ins), NoItinerary, "wfe", "",
172 [/* For disassembly only; pattern left blank */]>,
173 T1Disassembly<0b11, 0x20>; // A8.6.408
175 def tWFI : T1pI<(outs), (ins), NoItinerary, "wfi", "",
176 [/* For disassembly only; pattern left blank */]>,
177 T1Disassembly<0b11, 0x30>; // A8.6.409
179 def tSEV : T1pI<(outs), (ins), NoItinerary, "sev", "",
180 [/* For disassembly only; pattern left blank */]>,
181 T1Disassembly<0b11, 0x40>; // A8.6.157
183 // The i32imm operand $val can be used by a debugger to store more information
184 // about the breakpoint.
185 def tBKPT : T1I<(outs), (ins i32imm:$val), NoItinerary, "bkpt\t$val",
186 [/* For disassembly only; pattern left blank */]>,
187 T1Disassembly<0b10, {?,?,?,?,?,?,?,?}> {
193 def tSETENDBE : T1I<(outs), (ins), NoItinerary, "setend\tbe",
194 [/* For disassembly only; pattern left blank */]>,
195 T1Encoding<0b101101> {
197 let Inst{9-5} = 0b10010;
199 let Inst{3} = 1; // Big-Endian
200 let Inst{2-0} = 0b000;
203 def tSETENDLE : T1I<(outs), (ins), NoItinerary, "setend\tle",
204 [/* For disassembly only; pattern left blank */]>,
205 T1Encoding<0b101101> {
207 let Inst{9-5} = 0b10010;
209 let Inst{3} = 0; // Little-Endian
210 let Inst{2-0} = 0b000;
213 // Change Processor State is a system instruction -- for disassembly only.
214 // The singleton $opt operand contains the following information:
216 // opt{4-0} = mode ==> don't care
217 // opt{5} = changemode ==> 0 (false for 16-bit Thumb instr)
218 // opt{8-6} = AIF from Inst{2-0}
219 // opt{10-9} = 1:imod from Inst{4} with 0b10 as enable and 0b11 as disable
221 // The opt{4-0} and opt{5} sub-fields are to accommodate 32-bit Thumb and ARM
222 // CPS which has more options.
223 def tCPS : T1I<(outs), (ins cps_opt:$opt), NoItinerary, "cps$opt",
224 [/* For disassembly only; pattern left blank */]>,
228 // FIXME: Finish encoding.
231 // For both thumb1 and thumb2.
232 let isNotDuplicable = 1, isCodeGenOnly = 1 in
233 def tPICADD : TIt<(outs GPR:$dst), (ins GPR:$lhs, pclabel:$cp), IIC_iALUr, "",
234 [(set GPR:$dst, (ARMpic_add GPR:$lhs, imm:$cp))]>,
235 T1Special<{0,0,?,?}> {
238 let Inst{6-3} = 0b1111; // Rm = pc
242 // PC relative add (ADR).
243 def tADDrPCi : T1I<(outs tGPR:$dst), (ins t_imm_s4:$rhs), IIC_iALUi,
244 "add\t$dst, pc, $rhs", []>,
245 T1Encoding<{1,0,1,0,0,?}> {
249 let Inst{10-8} = dst;
253 // ADD <Rd>, sp, #<imm8>
254 // This is rematerializable, which is particularly useful for taking the
255 // address of locals.
256 let isReMaterializable = 1 in
257 def tADDrSPi : T1I<(outs tGPR:$dst), (ins GPR:$sp, t_imm_s4:$rhs), IIC_iALUi,
258 "add\t$dst, $sp, $rhs", []>,
259 T1Encoding<{1,0,1,0,1,?}> {
263 let Inst{10-8} = dst;
267 // ADD sp, sp, #<imm7>
268 def tADDspi : TIt<(outs GPR:$dst), (ins GPR:$lhs, t_imm_s4:$rhs), IIC_iALUi,
269 "add\t$dst, $rhs", []>,
270 T1Misc<{0,0,0,0,0,?,?}> {
276 // SUB sp, sp, #<imm7>
277 // FIXME: The encoding and the ASM string don't match up.
278 def tSUBspi : TIt<(outs GPR:$dst), (ins GPR:$lhs, t_imm_s4:$rhs), IIC_iALUi,
279 "sub\t$dst, $rhs", []>,
280 T1Misc<{0,0,0,0,1,?,?}> {
287 def tADDrSP : TIt<(outs GPR:$dst), (ins GPR:$lhs, GPR:$rhs), IIC_iALUr,
288 "add\t$dst, $rhs", []>,
289 T1Special<{0,0,?,?}> {
290 // A8.6.9 Encoding T1
292 let Inst{7} = dst{3};
293 let Inst{6-3} = 0b1101;
294 let Inst{2-0} = dst{2-0};
298 def tADDspr : TIt<(outs GPR:$dst), (ins GPR:$lhs, GPR:$rhs), IIC_iALUr,
299 "add\t$dst, $rhs", []>,
300 T1Special<{0,0,?,?}> {
301 // A8.6.9 Encoding T2
305 let Inst{2-0} = 0b101;
308 //===----------------------------------------------------------------------===//
309 // Control Flow Instructions.
312 let isReturn = 1, isTerminator = 1, isBarrier = 1 in {
313 def tBX_RET : TI<(outs), (ins), IIC_Br, "bx\tlr",
315 T1Special<{1,1,0,?}> {
317 let Inst{6-3} = 0b1110; // Rm = lr
318 let Inst{2-0} = 0b000;
321 // Alternative return instruction used by vararg functions.
322 def tBX_RET_vararg : TI<(outs), (ins tGPR:$Rm),
325 T1Special<{1,1,0,?}> {
329 let Inst{2-0} = 0b000;
334 let isBranch = 1, isTerminator = 1, isBarrier = 1, isIndirectBranch = 1 in {
335 def tBRIND : TI<(outs), (ins GPR:$Rm),
339 T1Special<{1,0,?,?}> {
342 let Inst{7} = 1; // <Rd> = Inst{7:2-0} = pc
344 let Inst{2-0} = 0b111;
348 // FIXME: remove when we have a way to marking a MI with these properties.
349 let isReturn = 1, isTerminator = 1, isBarrier = 1, mayLoad = 1,
350 hasExtraDefRegAllocReq = 1 in
351 def tPOP_RET : T1I<(outs), (ins pred:$p, reglist:$regs, variable_ops),
353 "pop${p}\t$regs", []>,
354 T1Misc<{1,1,0,?,?,?,?}> {
357 let Inst{8} = regs{15}; // registers = P:'0000000':register_list
358 let Inst{7-0} = regs{7-0};
361 // All calls clobber the non-callee saved registers. SP is marked as a use to
362 // prevent stack-pointer assignments that appear immediately before calls from
363 // potentially appearing dead.
365 // On non-Darwin platforms R9 is callee-saved.
366 Defs = [R0, R1, R2, R3, R12, LR,
367 D0, D1, D2, D3, D4, D5, D6, D7,
368 D16, D17, D18, D19, D20, D21, D22, D23,
369 D24, D25, D26, D27, D28, D29, D30, D31, CPSR, FPSCR],
371 // Also used for Thumb2
372 def tBL : TIx2<0b11110, 0b11, 1,
373 (outs), (ins t_bltarget:$func, variable_ops), IIC_Br,
375 [(ARMtcall tglobaladdr:$func)]>,
376 Requires<[IsThumb, IsNotDarwin]> {
378 let Inst{25-16} = func{20-11};
381 let Inst{10-0} = func{10-0};
384 // ARMv5T and above, also used for Thumb2
385 def tBLXi : TIx2<0b11110, 0b11, 0,
386 (outs), (ins t_bltarget:$func, variable_ops), IIC_Br,
388 [(ARMcall tglobaladdr:$func)]>,
389 Requires<[IsThumb, HasV5T, IsNotDarwin]> {
391 let Inst{25-16} = func{20-11};
394 let Inst{10-1} = func{10-1};
395 let Inst{0} = 0; // func{0} is assumed zero
398 // Also used for Thumb2
399 def tBLXr : TI<(outs), (ins GPR:$func, variable_ops), IIC_Br,
401 [(ARMtcall GPR:$func)]>,
402 Requires<[IsThumb, HasV5T, IsNotDarwin]>,
403 T1Special<{1,1,1,?}>; // A6.2.3 & A8.6.24;
406 // FIXME: Should be a pseudo.
407 let isCodeGenOnly = 1 in
408 def tBX : TIx2<{?,?,?,?,?}, {?,?}, ?,
409 (outs), (ins tGPR:$func, variable_ops), IIC_Br,
410 "mov\tlr, pc\n\tbx\t$func",
411 [(ARMcall_nolink tGPR:$func)]>,
412 Requires<[IsThumb, IsThumb1Only, IsNotDarwin]>;
416 // On Darwin R9 is call-clobbered.
417 // R7 is marked as a use to prevent frame-pointer assignments from being
418 // moved above / below calls.
419 Defs = [R0, R1, R2, R3, R9, R12, LR,
420 D0, D1, D2, D3, D4, D5, D6, D7,
421 D16, D17, D18, D19, D20, D21, D22, D23,
422 D24, D25, D26, D27, D28, D29, D30, D31, CPSR, FPSCR],
424 // Also used for Thumb2
425 def tBLr9 : TIx2<0b11110, 0b11, 1,
426 (outs), (ins pred:$p, t_bltarget:$func, variable_ops),
427 IIC_Br, "bl${p}\t$func",
428 [(ARMtcall tglobaladdr:$func)]>,
429 Requires<[IsThumb, IsDarwin]> {
431 let Inst{25-16} = func{20-11};
434 let Inst{10-0} = func{10-0};
437 // ARMv5T and above, also used for Thumb2
438 def tBLXi_r9 : TIx2<0b11110, 0b11, 0,
439 (outs), (ins pred:$p, t_bltarget:$func, variable_ops),
440 IIC_Br, "blx${p}\t$func",
441 [(ARMcall tglobaladdr:$func)]>,
442 Requires<[IsThumb, HasV5T, IsDarwin]> {
444 let Inst{25-16} = func{20-11};
447 let Inst{10-1} = func{10-1};
448 let Inst{0} = 0; // func{0} is assumed zero
451 // Also used for Thumb2
452 def tBLXr_r9 : TI<(outs), (ins pred:$p, GPR:$func, variable_ops), IIC_Br,
454 [(ARMtcall GPR:$func)]>,
455 Requires<[IsThumb, HasV5T, IsDarwin]>,
456 T1Special<{1,1,1,?}> {
459 let Inst{6-3} = func;
460 let Inst{2-0} = 0b000;
464 let isCodeGenOnly = 1 in
465 // FIXME: Should be a pseudo.
466 def tBXr9 : TIx2<{?,?,?,?,?}, {?,?}, ?,
467 (outs), (ins tGPR:$func, variable_ops), IIC_Br,
468 "mov\tlr, pc\n\tbx\t$func",
469 [(ARMcall_nolink tGPR:$func)]>,
470 Requires<[IsThumb, IsThumb1Only, IsDarwin]>;
473 let isBranch = 1, isTerminator = 1, isBarrier = 1 in {
474 let isPredicable = 1 in
475 def tB : T1I<(outs), (ins brtarget:$target), IIC_Br,
476 "b\t$target", [(br bb:$target)]>,
477 T1Encoding<{1,1,1,0,0,?}>;
481 def tBfar : TIx2<0b11110, 0b11, 1, (outs), (ins brtarget:$target), IIC_Br,
484 def tBR_JTr : tPseudoInst<(outs),
485 (ins tGPR:$target, i32imm:$jt, i32imm:$id),
487 [(ARMbrjt tGPR:$target, tjumptable:$jt, imm:$id)]> {
488 list<Predicate> Predicates = [IsThumb, IsThumb1Only];
492 // FIXME: should be able to write a pattern for ARMBrcond, but can't use
493 // a two-value operand where a dag node expects two operands. :(
494 let isBranch = 1, isTerminator = 1 in
495 def tBcc : T1I<(outs), (ins brtarget:$target, pred:$p), IIC_Br,
497 [/*(ARMbrcond bb:$target, imm:$cc)*/]>,
498 T1Encoding<{1,1,0,1,?,?}> {
503 // Compare and branch on zero / non-zero
504 let isBranch = 1, isTerminator = 1 in {
505 def tCBZ : T1I<(outs), (ins tGPR:$Rn, brtarget:$target), IIC_Br,
506 "cbz\t$Rn, $target", []>,
507 T1Misc<{0,0,?,1,?,?,?}> {
511 let Inst{9} = target{5};
512 let Inst{7-3} = target{4-0};
516 def tCBNZ : T1I<(outs), (ins tGPR:$cmp, brtarget:$target), IIC_Br,
517 "cbnz\t$cmp, $target", []>,
518 T1Misc<{1,0,?,1,?,?,?}> {
522 let Inst{9} = target{5};
523 let Inst{7-3} = target{4-0};
528 // A8.6.218 Supervisor Call (Software Interrupt) -- for disassembly only
529 // A8.6.16 B: Encoding T1
530 // If Inst{11-8} == 0b1111 then SEE SVC
531 let isCall = 1, Uses = [SP] in
532 def tSVC : T1pI<(outs), (ins i32imm:$imm), IIC_Br,
533 "svc", "\t$imm", []>, Encoding16 {
535 let Inst{15-12} = 0b1101;
536 let Inst{11-8} = 0b1111;
540 // The assembler uses 0xDEFE for a trap instruction.
541 let isBarrier = 1, isTerminator = 1 in
542 def tTRAP : TI<(outs), (ins), IIC_Br,
543 "trap", [(trap)]>, Encoding16 {
547 //===----------------------------------------------------------------------===//
548 // Load Store Instructions.
551 let canFoldAsLoad = 1, isReMaterializable = 1 in
552 def tLDR : // A8.6.60
553 T1pILdStEncode<0b100, (outs tGPR:$Rt), (ins t_addrmode_s4:$addr),
554 AddrModeT1_4, IIC_iLoad_r,
555 "ldr", "\t$Rt, $addr",
556 [(set tGPR:$Rt, (load t_addrmode_s4:$addr))]>;
558 def tLDRi: // A8.6.57
559 T1pILdStEncodeImm<0b0110, 1, (outs tGPR:$Rt), (ins t_addrmode_s4:$addr),
560 AddrModeT1_4, IIC_iLoad_r,
561 "ldr", "\t$Rt, $addr",
564 def tLDRB : // A8.6.64
565 T1pILdStEncode<0b110, (outs tGPR:$Rt), (ins t_addrmode_s1:$addr),
566 AddrModeT1_1, IIC_iLoad_bh_r,
567 "ldrb", "\t$Rt, $addr",
568 [(set tGPR:$Rt, (zextloadi8 t_addrmode_s1:$addr))]>;
570 def tLDRBi : // A8.6.61
571 T1pILdStEncodeImm<0b0111, 1, (outs tGPR:$Rt), (ins t_addrmode_s1:$addr),
572 AddrModeT1_1, IIC_iLoad_bh_r,
573 "ldrb", "\t$Rt, $addr",
576 def tLDRH : // A8.6.76
577 T1pILdStEncode<0b101, (outs tGPR:$dst), (ins t_addrmode_s2:$addr),
578 AddrModeT1_2, IIC_iLoad_bh_r,
579 "ldrh", "\t$dst, $addr",
580 [(set tGPR:$dst, (zextloadi16 t_addrmode_s2:$addr))]>;
582 def tLDRHi: // A8.6.73
583 T1pILdStEncodeImm<0b1000, 1, (outs tGPR:$Rt), (ins t_addrmode_s2:$addr),
584 AddrModeT1_2, IIC_iLoad_bh_r,
585 "ldrh", "\t$Rt, $addr",
588 let AddedComplexity = 10 in
589 def tLDRSB : // A8.6.80
590 T1pILdStEncode<0b011, (outs tGPR:$dst), (ins t_addrmode_rr:$addr),
591 AddrModeT1_1, IIC_iLoad_bh_r,
592 "ldrsb", "\t$dst, $addr",
593 [(set tGPR:$dst, (sextloadi8 t_addrmode_rr:$addr))]>;
595 let AddedComplexity = 10 in
596 def tLDRSH : // A8.6.84
597 T1pILdStEncode<0b111, (outs tGPR:$dst), (ins t_addrmode_rr:$addr),
598 AddrModeT1_2, IIC_iLoad_bh_r,
599 "ldrsh", "\t$dst, $addr",
600 [(set tGPR:$dst, (sextloadi16 t_addrmode_rr:$addr))]>;
602 let canFoldAsLoad = 1 in
603 def tLDRspi : T1pIs<(outs tGPR:$dst), (ins t_addrmode_sp:$addr), IIC_iLoad_i,
604 "ldr", "\t$dst, $addr",
605 [(set tGPR:$dst, (load t_addrmode_sp:$addr))]>,
608 // Special instruction for restore. It cannot clobber condition register
609 // when it's expanded by eliminateCallFramePseudoInstr().
610 let canFoldAsLoad = 1, mayLoad = 1, neverHasSideEffects = 1 in
611 def tRestore : T1pIs<(outs tGPR:$dst), (ins t_addrmode_sp:$addr), IIC_iLoad_i,
612 "ldr", "\t$dst, $addr", []>,
616 // FIXME: Use ldr.n to work around a Darwin assembler bug.
617 let canFoldAsLoad = 1, isReMaterializable = 1 in
618 def tLDRpci : T1pIs<(outs tGPR:$Rt), (ins i32imm:$addr), IIC_iLoad_i,
619 "ldr", ".n\t$Rt, $addr",
620 [(set tGPR:$Rt, (load (ARMWrapper tconstpool:$addr)))]>,
621 T1Encoding<{0,1,0,0,1,?}> {
625 // FIXME: Finish for the addr.
628 // Special LDR for loads from non-pc-relative constpools.
629 let canFoldAsLoad = 1, mayLoad = 1, neverHasSideEffects = 1,
630 isReMaterializable = 1 in
631 def tLDRcp : T1pIs<(outs tGPR:$dst), (ins i32imm:$addr), IIC_iLoad_i,
632 "ldr", "\t$dst, $addr", []>,
635 def tSTR : // A8.6.194
636 T1pILdStEncode<0b000, (outs), (ins tGPR:$src, t_addrmode_s4:$addr),
637 AddrModeT1_4, IIC_iStore_r,
638 "str", "\t$src, $addr",
639 [(store tGPR:$src, t_addrmode_s4:$addr)]>;
641 def tSTRi : // A8.6.192
642 T1pILdStEncodeImm<0b0110, 0, (outs), (ins tGPR:$Rt, t_addrmode_s4:$addr),
643 AddrModeT1_4, IIC_iStore_r,
644 "str", "\t$Rt, $addr",
647 def tSTRB : // A8.6.197
648 T1pILdStEncode<0b010, (outs), (ins tGPR:$src, t_addrmode_s1:$addr),
649 AddrModeT1_1, IIC_iStore_bh_r,
650 "strb", "\t$src, $addr",
651 [(truncstorei8 tGPR:$src, t_addrmode_s1:$addr)]>;
653 def tSTRBi : // A8.6.195
654 T1pILdStEncodeImm<0b0111, 0, (outs), (ins tGPR:$Rt, t_addrmode_s1:$addr),
655 AddrModeT1_1, IIC_iStore_bh_r,
656 "strb", "\t$Rt, $addr",
659 def tSTRH : // A8.6.207
660 T1pILdStEncode<0b001, (outs), (ins tGPR:$src, t_addrmode_s2:$addr),
661 AddrModeT1_2, IIC_iStore_bh_r,
662 "strh", "\t$src, $addr",
663 [(truncstorei16 tGPR:$src, t_addrmode_s2:$addr)]>;
665 def tSTRHi : // A8.6.205
666 T1pILdStEncodeImm<0b1000, 0, (outs), (ins tGPR:$Rt, t_addrmode_s2:$addr),
667 AddrModeT1_2, IIC_iStore_bh_r,
668 "strh", "\t$Rt, $addr",
671 def tSTRspi : T1pIs<(outs), (ins tGPR:$src, t_addrmode_sp:$addr), IIC_iStore_i,
672 "str", "\t$src, $addr",
673 [(store tGPR:$src, t_addrmode_sp:$addr)]>,
676 let mayStore = 1, neverHasSideEffects = 1 in
677 // Special instruction for spill. It cannot clobber condition register when it's
678 // expanded by eliminateCallFramePseudoInstr().
679 def tSpill : T1pIs<(outs), (ins tGPR:$src, t_addrmode_sp:$addr), IIC_iStore_i,
680 "str", "\t$src, $addr", []>,
683 //===----------------------------------------------------------------------===//
684 // Load / store multiple Instructions.
687 multiclass thumb_ldst_mult<string asm, InstrItinClass itin,
688 InstrItinClass itin_upd, bits<6> T1Enc,
691 T1I<(outs), (ins GPR:$Rn, pred:$p, reglist:$regs, variable_ops),
692 itin, !strconcat(asm, "ia${p}\t$Rn, $regs"), []>,
697 let Inst{7-0} = regs;
700 T1It<(outs GPR:$wb), (ins GPR:$Rn, pred:$p, reglist:$regs, variable_ops),
701 itin_upd, !strconcat(asm, "ia${p}\t$Rn!, $regs"), "$Rn = $wb", []>,
706 let Inst{7-0} = regs;
710 // These require base address to be written back or one of the loaded regs.
711 let neverHasSideEffects = 1 in {
713 let mayLoad = 1, hasExtraDefRegAllocReq = 1 in
714 defm tLDM : thumb_ldst_mult<"ldm", IIC_iLoad_m, IIC_iLoad_mu,
717 let mayStore = 1, hasExtraSrcRegAllocReq = 1 in
718 defm tSTM : thumb_ldst_mult<"stm", IIC_iStore_m, IIC_iStore_mu,
721 } // neverHasSideEffects
723 let mayLoad = 1, Uses = [SP], Defs = [SP], hasExtraDefRegAllocReq = 1 in
724 def tPOP : T1I<(outs), (ins pred:$p, reglist:$regs, variable_ops),
726 "pop${p}\t$regs", []>,
727 T1Misc<{1,1,0,?,?,?,?}> {
729 let Inst{8} = regs{15};
730 let Inst{7-0} = regs{7-0};
733 let mayStore = 1, Uses = [SP], Defs = [SP], hasExtraSrcRegAllocReq = 1 in
734 def tPUSH : T1I<(outs), (ins pred:$p, reglist:$regs, variable_ops),
736 "push${p}\t$regs", []>,
737 T1Misc<{0,1,0,?,?,?,?}> {
739 let Inst{8} = regs{14};
740 let Inst{7-0} = regs{7-0};
743 //===----------------------------------------------------------------------===//
744 // Arithmetic Instructions.
747 // Helper classes for encoding T1pI patterns:
748 class T1pIDPEncode<bits<4> opA, dag oops, dag iops, InstrItinClass itin,
749 string opc, string asm, list<dag> pattern>
750 : T1pI<oops, iops, itin, opc, asm, pattern>,
751 T1DataProcessing<opA> {
757 class T1pIMiscEncode<bits<7> opA, dag oops, dag iops, InstrItinClass itin,
758 string opc, string asm, list<dag> pattern>
759 : T1pI<oops, iops, itin, opc, asm, pattern>,
767 // Helper classes for encoding T1sI patterns:
768 class T1sIDPEncode<bits<4> opA, dag oops, dag iops, InstrItinClass itin,
769 string opc, string asm, list<dag> pattern>
770 : T1sI<oops, iops, itin, opc, asm, pattern>,
771 T1DataProcessing<opA> {
777 class T1sIGenEncode<bits<5> opA, dag oops, dag iops, InstrItinClass itin,
778 string opc, string asm, list<dag> pattern>
779 : T1sI<oops, iops, itin, opc, asm, pattern>,
788 class T1sIGenEncodeImm<bits<5> opA, dag oops, dag iops, InstrItinClass itin,
789 string opc, string asm, list<dag> pattern>
790 : T1sI<oops, iops, itin, opc, asm, pattern>,
798 // Helper classes for encoding T1sIt patterns:
799 class T1sItDPEncode<bits<4> opA, dag oops, dag iops, InstrItinClass itin,
800 string opc, string asm, list<dag> pattern>
801 : T1sIt<oops, iops, itin, opc, asm, pattern>,
802 T1DataProcessing<opA> {
808 class T1sItGenEncodeImm<bits<5> opA, dag oops, dag iops, InstrItinClass itin,
809 string opc, string asm, list<dag> pattern>
810 : T1sIt<oops, iops, itin, opc, asm, pattern>,
814 let Inst{10-8} = Rdn;
815 let Inst{7-0} = imm8;
818 // Add with carry register
819 let isCommutable = 1, Uses = [CPSR] in
821 T1sItDPEncode<0b0101, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm), IIC_iALUr,
822 "adc", "\t$Rdn, $Rm",
823 [(set tGPR:$Rdn, (adde tGPR:$Rn, tGPR:$Rm))]>;
826 def tADDi3 : // A8.6.4 T1
827 T1sIGenEncodeImm<0b01110, (outs tGPR:$Rd), (ins tGPR:$Rm, i32imm:$imm3), IIC_iALUi,
828 "add", "\t$Rd, $Rm, $imm3",
829 [(set tGPR:$Rd, (add tGPR:$Rm, imm0_7:$imm3))]> {
831 let Inst{8-6} = imm3;
834 def tADDi8 : // A8.6.4 T2
835 T1sItGenEncodeImm<{1,1,0,?,?}, (outs tGPR:$Rdn), (ins tGPR:$Rn, i32imm:$imm8),
837 "add", "\t$Rdn, $imm8",
838 [(set tGPR:$Rdn, (add tGPR:$Rn, imm8_255:$imm8))]>;
841 let isCommutable = 1 in
842 def tADDrr : // A8.6.6 T1
843 T1sIGenEncode<0b01100, (outs tGPR:$Rd), (ins tGPR:$Rn, tGPR:$Rm),
845 "add", "\t$Rd, $Rn, $Rm",
846 [(set tGPR:$Rd, (add tGPR:$Rn, tGPR:$Rm))]>;
848 let neverHasSideEffects = 1 in
849 def tADDhirr : T1pIt<(outs GPR:$Rdn), (ins GPR:$Rn, GPR:$Rm), IIC_iALUr,
850 "add", "\t$Rdn, $Rm", []>,
851 T1Special<{0,0,?,?}> {
855 let Inst{7} = Rdn{3};
857 let Inst{2-0} = Rdn{2-0};
861 let isCommutable = 1 in
862 def tAND : // A8.6.12
863 T1sItDPEncode<0b0000, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
865 "and", "\t$Rdn, $Rm",
866 [(set tGPR:$Rdn, (and tGPR:$Rn, tGPR:$Rm))]>;
869 def tASRri : // A8.6.14
870 T1sIGenEncodeImm<{0,1,0,?,?}, (outs tGPR:$Rd), (ins tGPR:$Rm, i32imm:$imm5),
872 "asr", "\t$Rd, $Rm, $imm5",
873 [(set tGPR:$Rd, (sra tGPR:$Rm, (i32 imm:$imm5)))]> {
875 let Inst{10-6} = imm5;
879 def tASRrr : // A8.6.15
880 T1sItDPEncode<0b0100, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
882 "asr", "\t$Rdn, $Rm",
883 [(set tGPR:$Rdn, (sra tGPR:$Rn, tGPR:$Rm))]>;
886 def tBIC : // A8.6.20
887 T1sItDPEncode<0b1110, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
889 "bic", "\t$Rdn, $Rm",
890 [(set tGPR:$Rdn, (and tGPR:$Rn, (not tGPR:$Rm)))]>;
893 let isCompare = 1, Defs = [CPSR] in {
894 //FIXME: Disable CMN, as CCodes are backwards from compare expectations
895 // Compare-to-zero still works out, just not the relationals
896 //def tCMN : // A8.6.33
897 // T1pIDPEncode<0b1011, (outs), (ins tGPR:$lhs, tGPR:$rhs),
899 // "cmn", "\t$lhs, $rhs",
900 // [(ARMcmp tGPR:$lhs, (ineg tGPR:$rhs))]>;
902 def tCMNz : // A8.6.33
903 T1pIDPEncode<0b1011, (outs), (ins tGPR:$Rn, tGPR:$Rm),
906 [(ARMcmpZ tGPR:$Rn, (ineg tGPR:$Rm))]>;
908 } // isCompare = 1, Defs = [CPSR]
911 let isCompare = 1, Defs = [CPSR] in {
912 def tCMPi8 : T1pI<(outs), (ins tGPR:$Rn, i32imm:$imm8), IIC_iCMPi,
913 "cmp", "\t$Rn, $imm8",
914 [(ARMcmp tGPR:$Rn, imm0_255:$imm8)]>,
915 T1General<{1,0,1,?,?}> {
920 let Inst{7-0} = imm8;
924 def tCMPr : // A8.6.36 T1
925 T1pIDPEncode<0b1010, (outs), (ins tGPR:$Rn, tGPR:$Rm),
928 [(ARMcmp tGPR:$Rn, tGPR:$Rm)]>;
930 def tCMPhir : T1pI<(outs), (ins GPR:$Rn, GPR:$Rm), IIC_iCMPr,
931 "cmp", "\t$Rn, $Rm", []>,
932 T1Special<{0,1,?,?}> {
938 let Inst{2-0} = Rn{2-0};
940 } // isCompare = 1, Defs = [CPSR]
944 let isCommutable = 1 in
945 def tEOR : // A8.6.45
946 T1sItDPEncode<0b0001, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
948 "eor", "\t$Rdn, $Rm",
949 [(set tGPR:$Rdn, (xor tGPR:$Rn, tGPR:$Rm))]>;
952 def tLSLri : // A8.6.88
953 T1sIGenEncodeImm<{0,0,0,?,?}, (outs tGPR:$Rd), (ins tGPR:$Rm, i32imm:$imm5),
955 "lsl", "\t$Rd, $Rm, $imm5",
956 [(set tGPR:$Rd, (shl tGPR:$Rm, (i32 imm:$imm5)))]> {
958 let Inst{10-6} = imm5;
962 def tLSLrr : // A8.6.89
963 T1sItDPEncode<0b0010, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
965 "lsl", "\t$Rdn, $Rm",
966 [(set tGPR:$Rdn, (shl tGPR:$Rn, tGPR:$Rm))]>;
969 def tLSRri : // A8.6.90
970 T1sIGenEncodeImm<{0,0,1,?,?}, (outs tGPR:$Rd), (ins tGPR:$Rm, i32imm:$imm5),
972 "lsr", "\t$Rd, $Rm, $imm5",
973 [(set tGPR:$Rd, (srl tGPR:$Rm, (i32 imm:$imm5)))]> {
975 let Inst{10-6} = imm5;
979 def tLSRrr : // A8.6.91
980 T1sItDPEncode<0b0011, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
982 "lsr", "\t$Rdn, $Rm",
983 [(set tGPR:$Rdn, (srl tGPR:$Rn, tGPR:$Rm))]>;
987 def tMOVi8 : T1sI<(outs tGPR:$Rd), (ins i32imm:$imm8), IIC_iMOVi,
988 "mov", "\t$Rd, $imm8",
989 [(set tGPR:$Rd, imm0_255:$imm8)]>,
990 T1General<{1,0,0,?,?}> {
995 let Inst{7-0} = imm8;
998 // TODO: A7-73: MOV(2) - mov setting flag.
1000 let neverHasSideEffects = 1 in {
1001 // FIXME: Make this predicable.
1002 def tMOVr : T1I<(outs tGPR:$Rd), (ins tGPR:$Rm), IIC_iMOVr,
1003 "mov\t$Rd, $Rm", []>,
1008 // Bits {7-6} are encoded by the T1Special value.
1009 let Inst{5-3} = Rm{2-0};
1010 let Inst{2-0} = Rd{2-0};
1012 let Defs = [CPSR] in
1013 def tMOVSr : T1I<(outs tGPR:$Rd), (ins tGPR:$Rm), IIC_iMOVr,
1014 "movs\t$Rd, $Rm", []>, Encoding16 {
1018 let Inst{15-6} = 0b0000000000;
1023 // FIXME: Make these predicable.
1024 def tMOVgpr2tgpr : T1I<(outs tGPR:$Rd), (ins GPR:$Rm), IIC_iMOVr,
1025 "mov\t$Rd, $Rm", []>,
1026 T1Special<{1,0,0,?}> {
1030 // Bit {7} is encoded by the T1Special value.
1032 let Inst{2-0} = Rd{2-0};
1034 def tMOVtgpr2gpr : T1I<(outs GPR:$Rd), (ins tGPR:$Rm), IIC_iMOVr,
1035 "mov\t$Rd, $Rm", []>,
1036 T1Special<{1,0,?,0}> {
1040 // Bit {6} is encoded by the T1Special value.
1041 let Inst{7} = Rd{3};
1042 let Inst{5-3} = Rm{2-0};
1043 let Inst{2-0} = Rd{2-0};
1045 def tMOVgpr2gpr : T1I<(outs GPR:$Rd), (ins GPR:$Rm), IIC_iMOVr,
1046 "mov\t$Rd, $Rm", []>,
1047 T1Special<{1,0,?,?}> {
1051 let Inst{7} = Rd{3};
1053 let Inst{2-0} = Rd{2-0};
1055 } // neverHasSideEffects
1057 // Multiply register
1058 let isCommutable = 1 in
1059 def tMUL : // A8.6.105 T1
1060 T1sItDPEncode<0b1101, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
1062 "mul", "\t$Rdn, $Rm, $Rdn",
1063 [(set tGPR:$Rdn, (mul tGPR:$Rn, tGPR:$Rm))]>;
1065 // Move inverse register
1066 def tMVN : // A8.6.107
1067 T1sIDPEncode<0b1111, (outs tGPR:$Rd), (ins tGPR:$Rn), IIC_iMVNr,
1068 "mvn", "\t$Rd, $Rn",
1069 [(set tGPR:$Rd, (not tGPR:$Rn))]>;
1071 // Bitwise or register
1072 let isCommutable = 1 in
1073 def tORR : // A8.6.114
1074 T1sItDPEncode<0b1100, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
1076 "orr", "\t$Rdn, $Rm",
1077 [(set tGPR:$Rdn, (or tGPR:$Rn, tGPR:$Rm))]>;
1080 def tREV : // A8.6.134
1081 T1pIMiscEncode<{1,0,1,0,0,0,?}, (outs tGPR:$Rd), (ins tGPR:$Rm),
1083 "rev", "\t$Rd, $Rm",
1084 [(set tGPR:$Rd, (bswap tGPR:$Rm))]>,
1085 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1087 def tREV16 : // A8.6.135
1088 T1pIMiscEncode<{1,0,1,0,0,1,?}, (outs tGPR:$Rd), (ins tGPR:$Rm),
1090 "rev16", "\t$Rd, $Rm",
1092 (or (and (srl tGPR:$Rm, (i32 8)), 0xFF),
1093 (or (and (shl tGPR:$Rm, (i32 8)), 0xFF00),
1094 (or (and (srl tGPR:$Rm, (i32 8)), 0xFF0000),
1095 (and (shl tGPR:$Rm, (i32 8)), 0xFF000000)))))]>,
1096 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1098 def tREVSH : // A8.6.136
1099 T1pIMiscEncode<{1,0,1,0,1,1,?}, (outs tGPR:$Rd), (ins tGPR:$Rm),
1101 "revsh", "\t$Rd, $Rm",
1104 (or (srl (and tGPR:$Rm, 0xFF00), (i32 8)),
1105 (shl tGPR:$Rm, (i32 8))), i16))]>,
1106 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1108 // Rotate right register
1109 def tROR : // A8.6.139
1110 T1sItDPEncode<0b0111, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
1112 "ror", "\t$Rdn, $Rm",
1113 [(set tGPR:$Rdn, (rotr tGPR:$Rn, tGPR:$Rm))]>;
1116 def tRSB : // A8.6.141
1117 T1sIDPEncode<0b1001, (outs tGPR:$Rd), (ins tGPR:$Rn),
1119 "rsb", "\t$Rd, $Rn, #0",
1120 [(set tGPR:$Rd, (ineg tGPR:$Rn))]>;
1122 // Subtract with carry register
1123 let Uses = [CPSR] in
1124 def tSBC : // A8.6.151
1125 T1sItDPEncode<0b0110, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
1127 "sbc", "\t$Rdn, $Rm",
1128 [(set tGPR:$Rdn, (sube tGPR:$Rn, tGPR:$Rm))]>;
1130 // Subtract immediate
1131 def tSUBi3 : // A8.6.210 T1
1132 T1sIGenEncodeImm<0b01111, (outs tGPR:$Rd), (ins tGPR:$Rm, i32imm:$imm3),
1134 "sub", "\t$Rd, $Rm, $imm3",
1135 [(set tGPR:$Rd, (add tGPR:$Rm, imm0_7_neg:$imm3))]> {
1137 let Inst{8-6} = imm3;
1140 def tSUBi8 : // A8.6.210 T2
1141 T1sItGenEncodeImm<{1,1,1,?,?}, (outs tGPR:$Rdn), (ins tGPR:$Rn, i32imm:$imm8),
1143 "sub", "\t$Rdn, $imm8",
1144 [(set tGPR:$Rdn, (add tGPR:$Rn, imm8_255_neg:$imm8))]>;
1146 // Subtract register
1147 def tSUBrr : // A8.6.212
1148 T1sIGenEncode<0b01101, (outs tGPR:$Rd), (ins tGPR:$Rn, tGPR:$Rm),
1150 "sub", "\t$Rd, $Rn, $Rm",
1151 [(set tGPR:$Rd, (sub tGPR:$Rn, tGPR:$Rm))]>;
1153 // TODO: A7-96: STMIA - store multiple.
1156 def tSXTB : // A8.6.222
1157 T1pIMiscEncode<{0,0,1,0,0,1,?}, (outs tGPR:$Rd), (ins tGPR:$Rm),
1159 "sxtb", "\t$Rd, $Rm",
1160 [(set tGPR:$Rd, (sext_inreg tGPR:$Rm, i8))]>,
1161 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1163 // Sign-extend short
1164 def tSXTH : // A8.6.224
1165 T1pIMiscEncode<{0,0,1,0,0,0,?}, (outs tGPR:$Rd), (ins tGPR:$Rm),
1167 "sxth", "\t$Rd, $Rm",
1168 [(set tGPR:$Rd, (sext_inreg tGPR:$Rm, i16))]>,
1169 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1172 let isCompare = 1, isCommutable = 1, Defs = [CPSR] in
1173 def tTST : // A8.6.230
1174 T1pIDPEncode<0b1000, (outs), (ins tGPR:$Rn, tGPR:$Rm), IIC_iTSTr,
1175 "tst", "\t$Rn, $Rm",
1176 [(ARMcmpZ (and_su tGPR:$Rn, tGPR:$Rm), 0)]>;
1179 def tUXTB : // A8.6.262
1180 T1pIMiscEncode<{0,0,1,0,1,1,?}, (outs tGPR:$Rd), (ins tGPR:$Rm),
1182 "uxtb", "\t$Rd, $Rm",
1183 [(set tGPR:$Rd, (and tGPR:$Rm, 0xFF))]>,
1184 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1186 // Zero-extend short
1187 def tUXTH : // A8.6.264
1188 T1pIMiscEncode<{0,0,1,0,1,0,?}, (outs tGPR:$Rd), (ins tGPR:$Rm),
1190 "uxth", "\t$Rd, $Rm",
1191 [(set tGPR:$Rd, (and tGPR:$Rm, 0xFFFF))]>,
1192 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1194 // Conditional move tMOVCCr - Used to implement the Thumb SELECT_CC operation.
1195 // Expanded after instruction selection into a branch sequence.
1196 let usesCustomInserter = 1 in // Expanded after instruction selection.
1197 def tMOVCCr_pseudo :
1198 PseudoInst<(outs tGPR:$dst), (ins tGPR:$false, tGPR:$true, pred:$cc),
1200 [/*(set tGPR:$dst, (ARMcmov tGPR:$false, tGPR:$true, imm:$cc))*/]>;
1203 // 16-bit movcc in IT blocks for Thumb2.
1204 let neverHasSideEffects = 1 in {
1205 def tMOVCCr : T1pIt<(outs GPR:$Rdn), (ins GPR:$Rn, GPR:$Rm), IIC_iCMOVr,
1206 "mov", "\t$Rdn, $Rm", []>,
1207 T1Special<{1,0,?,?}> {
1210 let Inst{7} = Rdn{3};
1212 let Inst{2-0} = Rdn{2-0};
1215 let isMoveImm = 1 in
1216 def tMOVCCi : T1pIt<(outs tGPR:$Rdn), (ins tGPR:$Rn, i32imm:$Rm), IIC_iCMOVi,
1217 "mov", "\t$Rdn, $Rm", []>,
1218 T1General<{1,0,0,?,?}> {
1221 let Inst{10-8} = Rdn;
1225 } // neverHasSideEffects
1227 // tLEApcrel - Load a pc-relative address into a register without offending the
1229 let neverHasSideEffects = 1, isReMaterializable = 1 in
1230 def tLEApcrel : T1I<(outs tGPR:$Rd), (ins i32imm:$label, pred:$p), IIC_iALUi,
1231 "adr${p}\t$Rd, #$label", []>,
1232 T1Encoding<{1,0,1,0,0,?}> {
1235 let Inst{10-8} = Rd;
1236 // FIXME: Add label encoding/fixup
1239 def tLEApcrelJT : T1I<(outs tGPR:$Rd),
1240 (ins i32imm:$label, nohash_imm:$id, pred:$p),
1241 IIC_iALUi, "adr${p}\t$Rd, #${label}_${id}", []>,
1242 T1Encoding<{1,0,1,0,0,?}> {
1245 let Inst{10-8} = Rd;
1246 // FIXME: Add label encoding/fixup
1249 //===----------------------------------------------------------------------===//
1253 // __aeabi_read_tp preserves the registers r1-r3.
1254 let isCall = 1, Defs = [R0, LR], Uses = [SP] in
1255 def tTPsoft : TIx2<0b11110, 0b11, 1, (outs), (ins), IIC_Br,
1256 "bl\t__aeabi_read_tp",
1257 [(set R0, ARMthread_pointer)]> {
1258 // Encoding is 0xf7fffffe.
1259 let Inst = 0xf7fffffe;
1262 //===----------------------------------------------------------------------===//
1263 // SJLJ Exception handling intrinsics
1266 // eh_sjlj_setjmp() is an instruction sequence to store the return address and
1267 // save #0 in R0 for the non-longjmp case. Since by its nature we may be coming
1268 // from some other function to get here, and we're using the stack frame for the
1269 // containing function to save/restore registers, we can't keep anything live in
1270 // regs across the eh_sjlj_setjmp(), else it will almost certainly have been
1271 // tromped upon when we get here from a longjmp(). We force everthing out of
1272 // registers except for our own input by listing the relevant registers in
1273 // Defs. By doing so, we also cause the prologue/epilogue code to actively
1274 // preserve all of the callee-saved resgisters, which is exactly what we want.
1275 // $val is a scratch register for our use.
1276 let Defs = [ R0, R1, R2, R3, R4, R5, R6, R7, R12 ],
1277 hasSideEffects = 1, isBarrier = 1, isCodeGenOnly = 1 in
1278 def tInt_eh_sjlj_setjmp : ThumbXI<(outs),(ins tGPR:$src, tGPR:$val),
1279 AddrModeNone, SizeSpecial, NoItinerary, "","",
1280 [(set R0, (ARMeh_sjlj_setjmp tGPR:$src, tGPR:$val))]>;
1282 // FIXME: Non-Darwin version(s)
1283 let isBarrier = 1, hasSideEffects = 1, isTerminator = 1, isCodeGenOnly = 1,
1284 Defs = [ R7, LR, SP ] in
1285 def tInt_eh_sjlj_longjmp : XI<(outs), (ins GPR:$src, GPR:$scratch),
1286 AddrModeNone, SizeSpecial, IndexModeNone,
1287 Pseudo, NoItinerary, "", "",
1288 [(ARMeh_sjlj_longjmp GPR:$src, GPR:$scratch)]>,
1289 Requires<[IsThumb, IsDarwin]>;
1291 //===----------------------------------------------------------------------===//
1292 // Non-Instruction Patterns
1296 def : T1Pat<(ARMcmpZ tGPR:$Rn, imm0_255:$imm8),
1297 (tCMPi8 tGPR:$Rn, imm0_255:$imm8)>;
1298 def : T1Pat<(ARMcmpZ tGPR:$Rn, tGPR:$Rm),
1299 (tCMPr tGPR:$Rn, tGPR:$Rm)>;
1302 def : T1Pat<(addc tGPR:$lhs, imm0_7:$rhs),
1303 (tADDi3 tGPR:$lhs, imm0_7:$rhs)>;
1304 def : T1Pat<(addc tGPR:$lhs, imm8_255:$rhs),
1305 (tADDi8 tGPR:$lhs, imm8_255:$rhs)>;
1306 def : T1Pat<(addc tGPR:$lhs, tGPR:$rhs),
1307 (tADDrr tGPR:$lhs, tGPR:$rhs)>;
1309 // Subtract with carry
1310 def : T1Pat<(addc tGPR:$lhs, imm0_7_neg:$rhs),
1311 (tSUBi3 tGPR:$lhs, imm0_7_neg:$rhs)>;
1312 def : T1Pat<(addc tGPR:$lhs, imm8_255_neg:$rhs),
1313 (tSUBi8 tGPR:$lhs, imm8_255_neg:$rhs)>;
1314 def : T1Pat<(subc tGPR:$lhs, tGPR:$rhs),
1315 (tSUBrr tGPR:$lhs, tGPR:$rhs)>;
1317 // ConstantPool, GlobalAddress
1318 def : T1Pat<(ARMWrapper tglobaladdr :$dst), (tLEApcrel tglobaladdr :$dst)>;
1319 def : T1Pat<(ARMWrapper tconstpool :$dst), (tLEApcrel tconstpool :$dst)>;
1322 def : T1Pat<(ARMWrapperJT tjumptable:$dst, imm:$id),
1323 (tLEApcrelJT tjumptable:$dst, imm:$id)>;
1326 def : T1Pat<(ARMtcall texternalsym:$func), (tBL texternalsym:$func)>,
1327 Requires<[IsThumb, IsNotDarwin]>;
1328 def : T1Pat<(ARMtcall texternalsym:$func), (tBLr9 texternalsym:$func)>,
1329 Requires<[IsThumb, IsDarwin]>;
1331 def : Tv5Pat<(ARMcall texternalsym:$func), (tBLXi texternalsym:$func)>,
1332 Requires<[IsThumb, HasV5T, IsNotDarwin]>;
1333 def : Tv5Pat<(ARMcall texternalsym:$func), (tBLXi_r9 texternalsym:$func)>,
1334 Requires<[IsThumb, HasV5T, IsDarwin]>;
1336 // Indirect calls to ARM routines
1337 def : Tv5Pat<(ARMcall GPR:$dst), (tBLXr GPR:$dst)>,
1338 Requires<[IsThumb, HasV5T, IsNotDarwin]>;
1339 def : Tv5Pat<(ARMcall GPR:$dst), (tBLXr_r9 GPR:$dst)>,
1340 Requires<[IsThumb, HasV5T, IsDarwin]>;
1342 // zextload i1 -> zextload i8
1343 def : T1Pat<(zextloadi1 t_addrmode_s1:$addr),
1344 (tLDRB t_addrmode_s1:$addr)>;
1346 // extload -> zextload
1347 def : T1Pat<(extloadi1 t_addrmode_s1:$addr), (tLDRB t_addrmode_s1:$addr)>;
1348 def : T1Pat<(extloadi8 t_addrmode_s1:$addr), (tLDRB t_addrmode_s1:$addr)>;
1349 def : T1Pat<(extloadi16 t_addrmode_s2:$addr), (tLDRH t_addrmode_s2:$addr)>;
1351 // If it's impossible to use [r,r] address mode for sextload, select to
1352 // ldr{b|h} + sxt{b|h} instead.
1353 def : T1Pat<(sextloadi8 t_addrmode_s1:$addr),
1354 (tSXTB (tLDRB t_addrmode_s1:$addr))>,
1355 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1356 def : T1Pat<(sextloadi16 t_addrmode_s2:$addr),
1357 (tSXTH (tLDRH t_addrmode_s2:$addr))>,
1358 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1360 def : T1Pat<(sextloadi8 t_addrmode_s1:$addr),
1361 (tASRri (tLSLri (tLDRB t_addrmode_s1:$addr), 24), 24)>;
1362 def : T1Pat<(sextloadi16 t_addrmode_s1:$addr),
1363 (tASRri (tLSLri (tLDRH t_addrmode_s1:$addr), 16), 16)>;
1365 // Large immediate handling.
1368 def : T1Pat<(i32 thumb_immshifted:$src),
1369 (tLSLri (tMOVi8 (thumb_immshifted_val imm:$src)),
1370 (thumb_immshifted_shamt imm:$src))>;
1372 def : T1Pat<(i32 imm0_255_comp:$src),
1373 (tMVN (tMOVi8 (imm_comp_XFORM imm:$src)))>;
1375 // Pseudo instruction that combines ldr from constpool and add pc. This should
1376 // be expanded into two instructions late to allow if-conversion and
1378 let isReMaterializable = 1 in
1379 def tLDRpci_pic : PseudoInst<(outs GPR:$dst), (ins i32imm:$addr, pclabel:$cp),
1381 [(set GPR:$dst, (ARMpic_add (load (ARMWrapper tconstpool:$addr)),
1383 Requires<[IsThumb, IsThumb1Only]>;