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:$offsreg);
124 let ParserMatchClass = MemModeThumbAsmOperand;
127 // t_addrmode_sp := sp + imm8 * 4
129 def t_addrmode_sp : Operand<i32>,
130 ComplexPattern<i32, 2, "SelectThumbAddrModeSP", []> {
131 let EncoderMethod = "getAddrModeThumbSPOpValue";
132 let PrintMethod = "printThumbAddrModeSPOperand";
133 let MIOperandInfo = (ops GPR:$base, i32imm:$offsimm);
134 let ParserMatchClass = MemModeThumbAsmOperand;
137 //===----------------------------------------------------------------------===//
138 // Miscellaneous Instructions.
141 // FIXME: Marking these as hasSideEffects is necessary to prevent machine DCE
142 // from removing one half of the matched pairs. That breaks PEI, which assumes
143 // these will always be in pairs, and asserts if it finds otherwise. Better way?
144 let Defs = [SP], Uses = [SP], hasSideEffects = 1 in {
145 def tADJCALLSTACKUP :
146 PseudoInst<(outs), (ins i32imm:$amt1, i32imm:$amt2), NoItinerary,
147 [(ARMcallseq_end imm:$amt1, imm:$amt2)]>,
148 Requires<[IsThumb, IsThumb1Only]>;
150 def tADJCALLSTACKDOWN :
151 PseudoInst<(outs), (ins i32imm:$amt), NoItinerary,
152 [(ARMcallseq_start imm:$amt)]>,
153 Requires<[IsThumb, IsThumb1Only]>;
156 // T1Disassembly - A simple class to make encoding some disassembly patterns
157 // easier and less verbose.
158 class T1Disassembly<bits<2> op1, bits<8> op2>
159 : T1Encoding<0b101111> {
164 def tNOP : T1pI<(outs), (ins), NoItinerary, "nop", "",
165 [/* For disassembly only; pattern left blank */]>,
166 T1Disassembly<0b11, 0x00>; // A8.6.110
168 def tYIELD : T1pI<(outs), (ins), NoItinerary, "yield", "",
169 [/* For disassembly only; pattern left blank */]>,
170 T1Disassembly<0b11, 0x10>; // A8.6.410
172 def tWFE : T1pI<(outs), (ins), NoItinerary, "wfe", "",
173 [/* For disassembly only; pattern left blank */]>,
174 T1Disassembly<0b11, 0x20>; // A8.6.408
176 def tWFI : T1pI<(outs), (ins), NoItinerary, "wfi", "",
177 [/* For disassembly only; pattern left blank */]>,
178 T1Disassembly<0b11, 0x30>; // A8.6.409
180 def tSEV : T1pI<(outs), (ins), NoItinerary, "sev", "",
181 [/* For disassembly only; pattern left blank */]>,
182 T1Disassembly<0b11, 0x40>; // A8.6.157
184 // The i32imm operand $val can be used by a debugger to store more information
185 // about the breakpoint.
186 def tBKPT : T1I<(outs), (ins i32imm:$val), NoItinerary, "bkpt\t$val",
187 [/* For disassembly only; pattern left blank */]>,
188 T1Disassembly<0b10, {?,?,?,?,?,?,?,?}> {
194 def tSETENDBE : T1I<(outs), (ins), NoItinerary, "setend\tbe",
195 [/* For disassembly only; pattern left blank */]>,
196 T1Encoding<0b101101> {
198 let Inst{9-5} = 0b10010;
200 let Inst{3} = 1; // Big-Endian
201 let Inst{2-0} = 0b000;
204 def tSETENDLE : T1I<(outs), (ins), NoItinerary, "setend\tle",
205 [/* For disassembly only; pattern left blank */]>,
206 T1Encoding<0b101101> {
208 let Inst{9-5} = 0b10010;
210 let Inst{3} = 0; // Little-Endian
211 let Inst{2-0} = 0b000;
214 // Change Processor State is a system instruction -- for disassembly only.
215 // The singleton $opt operand contains the following information:
217 // opt{4-0} = mode ==> don't care
218 // opt{5} = changemode ==> 0 (false for 16-bit Thumb instr)
219 // opt{8-6} = AIF from Inst{2-0}
220 // opt{10-9} = 1:imod from Inst{4} with 0b10 as enable and 0b11 as disable
222 // The opt{4-0} and opt{5} sub-fields are to accommodate 32-bit Thumb and ARM
223 // CPS which has more options.
224 def tCPS : T1I<(outs), (ins cps_opt:$opt), NoItinerary, "cps$opt",
225 [/* For disassembly only; pattern left blank */]>,
229 // FIXME: Finish encoding.
232 // For both thumb1 and thumb2.
233 let isNotDuplicable = 1, isCodeGenOnly = 1 in
234 def tPICADD : TIt<(outs GPR:$dst), (ins GPR:$lhs, pclabel:$cp), IIC_iALUr, "",
235 [(set GPR:$dst, (ARMpic_add GPR:$lhs, imm:$cp))]>,
236 T1Special<{0,0,?,?}> {
239 let Inst{6-3} = 0b1111; // Rm = pc
243 // PC relative add (ADR).
244 def tADDrPCi : T1I<(outs tGPR:$dst), (ins t_imm_s4:$rhs), IIC_iALUi,
245 "add\t$dst, pc, $rhs", []>,
246 T1Encoding<{1,0,1,0,0,?}> {
250 let Inst{10-8} = dst;
254 // ADD <Rd>, sp, #<imm8>
255 // This is rematerializable, which is particularly useful for taking the
256 // address of locals.
257 let isReMaterializable = 1 in
258 def tADDrSPi : T1I<(outs tGPR:$dst), (ins GPR:$sp, t_imm_s4:$rhs), IIC_iALUi,
259 "add\t$dst, $sp, $rhs", []>,
260 T1Encoding<{1,0,1,0,1,?}> {
264 let Inst{10-8} = dst;
268 // ADD sp, sp, #<imm7>
269 def tADDspi : TIt<(outs GPR:$dst), (ins GPR:$lhs, t_imm_s4:$rhs), IIC_iALUi,
270 "add\t$dst, $rhs", []>,
271 T1Misc<{0,0,0,0,0,?,?}> {
277 // SUB sp, sp, #<imm7>
278 // FIXME: The encoding and the ASM string don't match up.
279 def tSUBspi : TIt<(outs GPR:$dst), (ins GPR:$lhs, t_imm_s4:$rhs), IIC_iALUi,
280 "sub\t$dst, $rhs", []>,
281 T1Misc<{0,0,0,0,1,?,?}> {
288 def tADDrSP : TIt<(outs GPR:$dst), (ins GPR:$lhs, GPR:$rhs), IIC_iALUr,
289 "add\t$dst, $rhs", []>,
290 T1Special<{0,0,?,?}> {
291 // A8.6.9 Encoding T1
293 let Inst{7} = dst{3};
294 let Inst{6-3} = 0b1101;
295 let Inst{2-0} = dst{2-0};
299 def tADDspr : TIt<(outs GPR:$dst), (ins GPR:$lhs, GPR:$rhs), IIC_iALUr,
300 "add\t$dst, $rhs", []>,
301 T1Special<{0,0,?,?}> {
302 // A8.6.9 Encoding T2
306 let Inst{2-0} = 0b101;
309 //===----------------------------------------------------------------------===//
310 // Control Flow Instructions.
313 let isReturn = 1, isTerminator = 1, isBarrier = 1 in {
314 def tBX_RET : TI<(outs), (ins), IIC_Br, "bx\tlr",
316 T1Special<{1,1,0,?}> {
318 let Inst{6-3} = 0b1110; // Rm = lr
319 let Inst{2-0} = 0b000;
322 // Alternative return instruction used by vararg functions.
323 def tBX_RET_vararg : TI<(outs), (ins tGPR:$Rm),
326 T1Special<{1,1,0,?}> {
330 let Inst{2-0} = 0b000;
335 let isBranch = 1, isTerminator = 1, isBarrier = 1, isIndirectBranch = 1 in {
336 def tBRIND : TI<(outs), (ins GPR:$Rm),
340 T1Special<{1,0,?,?}> {
343 let Inst{7} = 1; // <Rd> = Inst{7:2-0} = pc
345 let Inst{2-0} = 0b111;
349 // FIXME: remove when we have a way to marking a MI with these properties.
350 let isReturn = 1, isTerminator = 1, isBarrier = 1, mayLoad = 1,
351 hasExtraDefRegAllocReq = 1 in
352 def tPOP_RET : T1I<(outs), (ins pred:$p, reglist:$regs, variable_ops),
354 "pop${p}\t$regs", []>,
355 T1Misc<{1,1,0,?,?,?,?}> {
358 let Inst{8} = regs{15}; // registers = P:'0000000':register_list
359 let Inst{7-0} = regs{7-0};
362 // All calls clobber the non-callee saved registers. SP is marked as a use to
363 // prevent stack-pointer assignments that appear immediately before calls from
364 // potentially appearing dead.
366 // On non-Darwin platforms R9 is callee-saved.
367 Defs = [R0, R1, R2, R3, R12, LR,
368 D0, D1, D2, D3, D4, D5, D6, D7,
369 D16, D17, D18, D19, D20, D21, D22, D23,
370 D24, D25, D26, D27, D28, D29, D30, D31, CPSR, FPSCR],
372 // Also used for Thumb2
373 def tBL : TIx2<0b11110, 0b11, 1,
374 (outs), (ins t_bltarget:$func, variable_ops), IIC_Br,
376 [(ARMtcall tglobaladdr:$func)]>,
377 Requires<[IsThumb, IsNotDarwin]> {
379 let Inst{25-16} = func{20-11};
382 let Inst{10-0} = func{10-0};
385 // ARMv5T and above, also used for Thumb2
386 def tBLXi : TIx2<0b11110, 0b11, 0,
387 (outs), (ins t_bltarget:$func, variable_ops), IIC_Br,
389 [(ARMcall tglobaladdr:$func)]>,
390 Requires<[IsThumb, HasV5T, IsNotDarwin]> {
392 let Inst{25-16} = func{20-11};
395 let Inst{10-1} = func{10-1};
396 let Inst{0} = 0; // func{0} is assumed zero
399 // Also used for Thumb2
400 def tBLXr : TI<(outs), (ins GPR:$func, variable_ops), IIC_Br,
402 [(ARMtcall GPR:$func)]>,
403 Requires<[IsThumb, HasV5T, IsNotDarwin]>,
404 T1Special<{1,1,1,?}>; // A6.2.3 & A8.6.24;
407 // FIXME: Should be a pseudo.
408 let isCodeGenOnly = 1 in
409 def tBX : TIx2<{?,?,?,?,?}, {?,?}, ?,
410 (outs), (ins tGPR:$func, variable_ops), IIC_Br,
411 "mov\tlr, pc\n\tbx\t$func",
412 [(ARMcall_nolink tGPR:$func)]>,
413 Requires<[IsThumb, IsThumb1Only, IsNotDarwin]>;
417 // On Darwin R9 is call-clobbered.
418 // R7 is marked as a use to prevent frame-pointer assignments from being
419 // moved above / below calls.
420 Defs = [R0, R1, R2, R3, R9, R12, LR,
421 D0, D1, D2, D3, D4, D5, D6, D7,
422 D16, D17, D18, D19, D20, D21, D22, D23,
423 D24, D25, D26, D27, D28, D29, D30, D31, CPSR, FPSCR],
425 // Also used for Thumb2
426 def tBLr9 : TIx2<0b11110, 0b11, 1,
427 (outs), (ins pred:$p, t_bltarget:$func, variable_ops),
428 IIC_Br, "bl${p}\t$func",
429 [(ARMtcall tglobaladdr:$func)]>,
430 Requires<[IsThumb, IsDarwin]> {
432 let Inst{25-16} = func{20-11};
435 let Inst{10-0} = func{10-0};
438 // ARMv5T and above, also used for Thumb2
439 def tBLXi_r9 : TIx2<0b11110, 0b11, 0,
440 (outs), (ins pred:$p, t_bltarget:$func, variable_ops),
441 IIC_Br, "blx${p}\t$func",
442 [(ARMcall tglobaladdr:$func)]>,
443 Requires<[IsThumb, HasV5T, IsDarwin]> {
445 let Inst{25-16} = func{20-11};
448 let Inst{10-1} = func{10-1};
449 let Inst{0} = 0; // func{0} is assumed zero
452 // Also used for Thumb2
453 def tBLXr_r9 : TI<(outs), (ins pred:$p, GPR:$func, variable_ops), IIC_Br,
455 [(ARMtcall GPR:$func)]>,
456 Requires<[IsThumb, HasV5T, IsDarwin]>,
457 T1Special<{1,1,1,?}> {
460 let Inst{6-3} = func;
461 let Inst{2-0} = 0b000;
465 let isCodeGenOnly = 1 in
466 // FIXME: Should be a pseudo.
467 def tBXr9 : TIx2<{?,?,?,?,?}, {?,?}, ?,
468 (outs), (ins tGPR:$func, variable_ops), IIC_Br,
469 "mov\tlr, pc\n\tbx\t$func",
470 [(ARMcall_nolink tGPR:$func)]>,
471 Requires<[IsThumb, IsThumb1Only, IsDarwin]>;
474 let isBranch = 1, isTerminator = 1, isBarrier = 1 in {
475 let isPredicable = 1 in
476 def tB : T1I<(outs), (ins brtarget:$target), IIC_Br,
477 "b\t$target", [(br bb:$target)]>,
478 T1Encoding<{1,1,1,0,0,?}>;
482 def tBfar : TIx2<0b11110, 0b11, 1, (outs), (ins brtarget:$target), IIC_Br,
485 def tBR_JTr : tPseudoInst<(outs),
486 (ins tGPR:$target, i32imm:$jt, i32imm:$id),
488 [(ARMbrjt tGPR:$target, tjumptable:$jt, imm:$id)]> {
489 list<Predicate> Predicates = [IsThumb, IsThumb1Only];
493 // FIXME: should be able to write a pattern for ARMBrcond, but can't use
494 // a two-value operand where a dag node expects two operands. :(
495 let isBranch = 1, isTerminator = 1 in
496 def tBcc : T1I<(outs), (ins brtarget:$target, pred:$p), IIC_Br,
498 [/*(ARMbrcond bb:$target, imm:$cc)*/]>,
499 T1Encoding<{1,1,0,1,?,?}> {
504 // Compare and branch on zero / non-zero
505 let isBranch = 1, isTerminator = 1 in {
506 def tCBZ : T1I<(outs), (ins tGPR:$Rn, brtarget:$target), IIC_Br,
507 "cbz\t$Rn, $target", []>,
508 T1Misc<{0,0,?,1,?,?,?}> {
512 let Inst{9} = target{5};
513 let Inst{7-3} = target{4-0};
517 def tCBNZ : T1I<(outs), (ins tGPR:$cmp, brtarget:$target), IIC_Br,
518 "cbnz\t$cmp, $target", []>,
519 T1Misc<{1,0,?,1,?,?,?}> {
523 let Inst{9} = target{5};
524 let Inst{7-3} = target{4-0};
529 // A8.6.218 Supervisor Call (Software Interrupt) -- for disassembly only
530 // A8.6.16 B: Encoding T1
531 // If Inst{11-8} == 0b1111 then SEE SVC
532 let isCall = 1, Uses = [SP] in
533 def tSVC : T1pI<(outs), (ins i32imm:$imm), IIC_Br,
534 "svc", "\t$imm", []>, Encoding16 {
536 let Inst{15-12} = 0b1101;
537 let Inst{11-8} = 0b1111;
541 // The assembler uses 0xDEFE for a trap instruction.
542 let isBarrier = 1, isTerminator = 1 in
543 def tTRAP : TI<(outs), (ins), IIC_Br,
544 "trap", [(trap)]>, Encoding16 {
548 //===----------------------------------------------------------------------===//
549 // Load Store Instructions.
552 let canFoldAsLoad = 1, isReMaterializable = 1 in
553 def tLDR : // A8.6.60
554 T1pILdStEncode<0b100, (outs tGPR:$Rt), (ins t_addrmode_s4:$addr),
555 AddrModeT1_4, IIC_iLoad_r,
556 "ldr", "\t$Rt, $addr",
557 [(set tGPR:$Rt, (load t_addrmode_s4:$addr))]>;
559 def tLDRi: // A8.6.57
560 T1pILdStEncodeImm<0b0110, 1, (outs tGPR:$Rt), (ins t_addrmode_s4:$addr),
561 AddrModeT1_4, IIC_iLoad_r,
562 "ldr", "\t$Rt, $addr",
565 def tLDRB : // A8.6.64
566 T1pILdStEncode<0b110, (outs tGPR:$Rt), (ins t_addrmode_s1:$addr),
567 AddrModeT1_1, IIC_iLoad_bh_r,
568 "ldrb", "\t$Rt, $addr",
569 [(set tGPR:$Rt, (zextloadi8 t_addrmode_s1:$addr))]>;
571 def tLDRBi : // A8.6.61
572 T1pILdStEncodeImm<0b0111, 1, (outs tGPR:$Rt), (ins t_addrmode_s1:$addr),
573 AddrModeT1_1, IIC_iLoad_bh_r,
574 "ldrb", "\t$Rt, $addr",
577 def tLDRH : // A8.6.76
578 T1pILdStEncode<0b101, (outs tGPR:$dst), (ins t_addrmode_s2:$addr),
579 AddrModeT1_2, IIC_iLoad_bh_r,
580 "ldrh", "\t$dst, $addr",
581 [(set tGPR:$dst, (zextloadi16 t_addrmode_s2:$addr))]>;
583 def tLDRHi: // A8.6.73
584 T1pILdStEncodeImm<0b1000, 1, (outs tGPR:$Rt), (ins t_addrmode_s2:$addr),
585 AddrModeT1_2, IIC_iLoad_bh_r,
586 "ldrh", "\t$Rt, $addr",
589 let AddedComplexity = 10 in
590 def tLDRSB : // A8.6.80
591 T1pILdStEncode<0b011, (outs tGPR:$dst), (ins t_addrmode_rr:$addr),
592 AddrModeT1_1, IIC_iLoad_bh_r,
593 "ldrsb", "\t$dst, $addr",
594 [(set tGPR:$dst, (sextloadi8 t_addrmode_rr:$addr))]>;
596 let AddedComplexity = 10 in
597 def tLDRSH : // A8.6.84
598 T1pILdStEncode<0b111, (outs tGPR:$dst), (ins t_addrmode_rr:$addr),
599 AddrModeT1_2, IIC_iLoad_bh_r,
600 "ldrsh", "\t$dst, $addr",
601 [(set tGPR:$dst, (sextloadi16 t_addrmode_rr:$addr))]>;
603 let canFoldAsLoad = 1 in
604 def tLDRspi : T1pIs<(outs tGPR:$Rt), (ins t_addrmode_sp:$addr), IIC_iLoad_i,
605 "ldr", "\t$Rt, $addr",
606 [(set tGPR:$Rt, (load t_addrmode_sp:$addr))]>,
611 let Inst{7-0} = addr;
614 // Special instruction for restore. It cannot clobber condition register
615 // when it's expanded by eliminateCallFramePseudoInstr().
616 let canFoldAsLoad = 1, mayLoad = 1, neverHasSideEffects = 1 in
617 // FIXME: Pseudo for tLDRspi
618 def tRestore : T1pIs<(outs tGPR:$dst), (ins t_addrmode_sp:$addr), IIC_iLoad_i,
619 "ldr", "\t$dst, $addr", []>,
623 // FIXME: Use ldr.n to work around a Darwin assembler bug.
624 let canFoldAsLoad = 1, isReMaterializable = 1 in
625 def tLDRpci : T1pIs<(outs tGPR:$Rt), (ins i32imm:$addr), IIC_iLoad_i,
626 "ldr", ".n\t$Rt, $addr",
627 [(set tGPR:$Rt, (load (ARMWrapper tconstpool:$addr)))]>,
628 T1Encoding<{0,1,0,0,1,?}> {
632 // FIXME: Finish for the addr.
635 // Special LDR for loads from non-pc-relative constpools.
636 let canFoldAsLoad = 1, mayLoad = 1, neverHasSideEffects = 1,
637 isReMaterializable = 1 in
638 def tLDRcp : T1pIs<(outs tGPR:$dst), (ins i32imm:$addr), IIC_iLoad_i,
639 "ldr", "\t$dst, $addr", []>,
642 def tSTR : // A8.6.194
643 T1pILdStEncode<0b000, (outs), (ins tGPR:$src, t_addrmode_s4:$addr),
644 AddrModeT1_4, IIC_iStore_r,
645 "str", "\t$src, $addr",
646 [(store tGPR:$src, t_addrmode_s4:$addr)]>;
648 def tSTRi : // A8.6.192
649 T1pILdStEncodeImm<0b0110, 0, (outs), (ins tGPR:$Rt, t_addrmode_s4:$addr),
650 AddrModeT1_4, IIC_iStore_r,
651 "str", "\t$Rt, $addr",
654 def tSTRB : // A8.6.197
655 T1pILdStEncode<0b010, (outs), (ins tGPR:$src, t_addrmode_s1:$addr),
656 AddrModeT1_1, IIC_iStore_bh_r,
657 "strb", "\t$src, $addr",
658 [(truncstorei8 tGPR:$src, t_addrmode_s1:$addr)]>;
660 def tSTRBi : // A8.6.195
661 T1pILdStEncodeImm<0b0111, 0, (outs), (ins tGPR:$Rt, t_addrmode_s1:$addr),
662 AddrModeT1_1, IIC_iStore_bh_r,
663 "strb", "\t$Rt, $addr",
666 def tSTRH : // A8.6.207
667 T1pILdStEncode<0b001, (outs), (ins tGPR:$src, t_addrmode_s2:$addr),
668 AddrModeT1_2, IIC_iStore_bh_r,
669 "strh", "\t$src, $addr",
670 [(truncstorei16 tGPR:$src, t_addrmode_s2:$addr)]>;
672 def tSTRHi : // A8.6.205
673 T1pILdStEncodeImm<0b1000, 0, (outs), (ins tGPR:$Rt, t_addrmode_s2:$addr),
674 AddrModeT1_2, IIC_iStore_bh_r,
675 "strh", "\t$Rt, $addr",
678 def tSTRspi : T1pIs<(outs), (ins tGPR:$Rt, t_addrmode_sp:$addr), IIC_iStore_i,
679 "str", "\t$Rt, $addr",
680 [(store tGPR:$Rt, t_addrmode_sp:$addr)]>,
685 let Inst{7-0} = addr;
688 let mayStore = 1, neverHasSideEffects = 1 in
689 // Special instruction for spill. It cannot clobber condition register when it's
690 // expanded by eliminateCallFramePseudoInstr().
691 // FIXME: Pseudo for tSTRspi
692 def tSpill : T1pIs<(outs), (ins tGPR:$src, t_addrmode_sp:$addr), IIC_iStore_i,
693 "str", "\t$src, $addr", []>,
696 //===----------------------------------------------------------------------===//
697 // Load / store multiple Instructions.
700 multiclass thumb_ldst_mult<string asm, InstrItinClass itin,
701 InstrItinClass itin_upd, bits<6> T1Enc,
704 T1I<(outs), (ins GPR:$Rn, pred:$p, reglist:$regs, variable_ops),
705 itin, !strconcat(asm, "ia${p}\t$Rn, $regs"), []>,
710 let Inst{7-0} = regs;
713 T1It<(outs GPR:$wb), (ins GPR:$Rn, pred:$p, reglist:$regs, variable_ops),
714 itin_upd, !strconcat(asm, "ia${p}\t$Rn!, $regs"), "$Rn = $wb", []>,
719 let Inst{7-0} = regs;
723 // These require base address to be written back or one of the loaded regs.
724 let neverHasSideEffects = 1 in {
726 let mayLoad = 1, hasExtraDefRegAllocReq = 1 in
727 defm tLDM : thumb_ldst_mult<"ldm", IIC_iLoad_m, IIC_iLoad_mu,
730 let mayStore = 1, hasExtraSrcRegAllocReq = 1 in
731 defm tSTM : thumb_ldst_mult<"stm", IIC_iStore_m, IIC_iStore_mu,
734 } // neverHasSideEffects
736 let mayLoad = 1, Uses = [SP], Defs = [SP], hasExtraDefRegAllocReq = 1 in
737 def tPOP : T1I<(outs), (ins pred:$p, reglist:$regs, variable_ops),
739 "pop${p}\t$regs", []>,
740 T1Misc<{1,1,0,?,?,?,?}> {
742 let Inst{8} = regs{15};
743 let Inst{7-0} = regs{7-0};
746 let mayStore = 1, Uses = [SP], Defs = [SP], hasExtraSrcRegAllocReq = 1 in
747 def tPUSH : T1I<(outs), (ins pred:$p, reglist:$regs, variable_ops),
749 "push${p}\t$regs", []>,
750 T1Misc<{0,1,0,?,?,?,?}> {
752 let Inst{8} = regs{14};
753 let Inst{7-0} = regs{7-0};
756 //===----------------------------------------------------------------------===//
757 // Arithmetic Instructions.
760 // Helper classes for encoding T1pI patterns:
761 class T1pIDPEncode<bits<4> opA, dag oops, dag iops, InstrItinClass itin,
762 string opc, string asm, list<dag> pattern>
763 : T1pI<oops, iops, itin, opc, asm, pattern>,
764 T1DataProcessing<opA> {
770 class T1pIMiscEncode<bits<7> opA, dag oops, dag iops, InstrItinClass itin,
771 string opc, string asm, list<dag> pattern>
772 : T1pI<oops, iops, itin, opc, asm, pattern>,
780 // Helper classes for encoding T1sI patterns:
781 class T1sIDPEncode<bits<4> opA, dag oops, dag iops, InstrItinClass itin,
782 string opc, string asm, list<dag> pattern>
783 : T1sI<oops, iops, itin, opc, asm, pattern>,
784 T1DataProcessing<opA> {
790 class T1sIGenEncode<bits<5> opA, dag oops, dag iops, InstrItinClass itin,
791 string opc, string asm, list<dag> pattern>
792 : T1sI<oops, iops, itin, opc, asm, pattern>,
801 class T1sIGenEncodeImm<bits<5> opA, dag oops, dag iops, InstrItinClass itin,
802 string opc, string asm, list<dag> pattern>
803 : T1sI<oops, iops, itin, opc, asm, pattern>,
811 // Helper classes for encoding T1sIt patterns:
812 class T1sItDPEncode<bits<4> opA, dag oops, dag iops, InstrItinClass itin,
813 string opc, string asm, list<dag> pattern>
814 : T1sIt<oops, iops, itin, opc, asm, pattern>,
815 T1DataProcessing<opA> {
821 class T1sItGenEncodeImm<bits<5> opA, dag oops, dag iops, InstrItinClass itin,
822 string opc, string asm, list<dag> pattern>
823 : T1sIt<oops, iops, itin, opc, asm, pattern>,
827 let Inst{10-8} = Rdn;
828 let Inst{7-0} = imm8;
831 // Add with carry register
832 let isCommutable = 1, Uses = [CPSR] in
834 T1sItDPEncode<0b0101, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm), IIC_iALUr,
835 "adc", "\t$Rdn, $Rm",
836 [(set tGPR:$Rdn, (adde tGPR:$Rn, tGPR:$Rm))]>;
839 def tADDi3 : // A8.6.4 T1
840 T1sIGenEncodeImm<0b01110, (outs tGPR:$Rd), (ins tGPR:$Rm, i32imm:$imm3), IIC_iALUi,
841 "add", "\t$Rd, $Rm, $imm3",
842 [(set tGPR:$Rd, (add tGPR:$Rm, imm0_7:$imm3))]> {
844 let Inst{8-6} = imm3;
847 def tADDi8 : // A8.6.4 T2
848 T1sItGenEncodeImm<{1,1,0,?,?}, (outs tGPR:$Rdn), (ins tGPR:$Rn, i32imm:$imm8),
850 "add", "\t$Rdn, $imm8",
851 [(set tGPR:$Rdn, (add tGPR:$Rn, imm8_255:$imm8))]>;
854 let isCommutable = 1 in
855 def tADDrr : // A8.6.6 T1
856 T1sIGenEncode<0b01100, (outs tGPR:$Rd), (ins tGPR:$Rn, tGPR:$Rm),
858 "add", "\t$Rd, $Rn, $Rm",
859 [(set tGPR:$Rd, (add tGPR:$Rn, tGPR:$Rm))]>;
861 let neverHasSideEffects = 1 in
862 def tADDhirr : T1pIt<(outs GPR:$Rdn), (ins GPR:$Rn, GPR:$Rm), IIC_iALUr,
863 "add", "\t$Rdn, $Rm", []>,
864 T1Special<{0,0,?,?}> {
868 let Inst{7} = Rdn{3};
870 let Inst{2-0} = Rdn{2-0};
874 let isCommutable = 1 in
875 def tAND : // A8.6.12
876 T1sItDPEncode<0b0000, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
878 "and", "\t$Rdn, $Rm",
879 [(set tGPR:$Rdn, (and tGPR:$Rn, tGPR:$Rm))]>;
882 def tASRri : // A8.6.14
883 T1sIGenEncodeImm<{0,1,0,?,?}, (outs tGPR:$Rd), (ins tGPR:$Rm, i32imm:$imm5),
885 "asr", "\t$Rd, $Rm, $imm5",
886 [(set tGPR:$Rd, (sra tGPR:$Rm, (i32 imm:$imm5)))]> {
888 let Inst{10-6} = imm5;
892 def tASRrr : // A8.6.15
893 T1sItDPEncode<0b0100, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
895 "asr", "\t$Rdn, $Rm",
896 [(set tGPR:$Rdn, (sra tGPR:$Rn, tGPR:$Rm))]>;
899 def tBIC : // A8.6.20
900 T1sItDPEncode<0b1110, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
902 "bic", "\t$Rdn, $Rm",
903 [(set tGPR:$Rdn, (and tGPR:$Rn, (not tGPR:$Rm)))]>;
906 let isCompare = 1, Defs = [CPSR] in {
907 //FIXME: Disable CMN, as CCodes are backwards from compare expectations
908 // Compare-to-zero still works out, just not the relationals
909 //def tCMN : // A8.6.33
910 // T1pIDPEncode<0b1011, (outs), (ins tGPR:$lhs, tGPR:$rhs),
912 // "cmn", "\t$lhs, $rhs",
913 // [(ARMcmp tGPR:$lhs, (ineg tGPR:$rhs))]>;
915 def tCMNz : // A8.6.33
916 T1pIDPEncode<0b1011, (outs), (ins tGPR:$Rn, tGPR:$Rm),
919 [(ARMcmpZ tGPR:$Rn, (ineg tGPR:$Rm))]>;
921 } // isCompare = 1, Defs = [CPSR]
924 let isCompare = 1, Defs = [CPSR] in {
925 def tCMPi8 : T1pI<(outs), (ins tGPR:$Rn, i32imm:$imm8), IIC_iCMPi,
926 "cmp", "\t$Rn, $imm8",
927 [(ARMcmp tGPR:$Rn, imm0_255:$imm8)]>,
928 T1General<{1,0,1,?,?}> {
933 let Inst{7-0} = imm8;
937 def tCMPr : // A8.6.36 T1
938 T1pIDPEncode<0b1010, (outs), (ins tGPR:$Rn, tGPR:$Rm),
941 [(ARMcmp tGPR:$Rn, tGPR:$Rm)]>;
943 def tCMPhir : T1pI<(outs), (ins GPR:$Rn, GPR:$Rm), IIC_iCMPr,
944 "cmp", "\t$Rn, $Rm", []>,
945 T1Special<{0,1,?,?}> {
951 let Inst{2-0} = Rn{2-0};
953 } // isCompare = 1, Defs = [CPSR]
957 let isCommutable = 1 in
958 def tEOR : // A8.6.45
959 T1sItDPEncode<0b0001, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
961 "eor", "\t$Rdn, $Rm",
962 [(set tGPR:$Rdn, (xor tGPR:$Rn, tGPR:$Rm))]>;
965 def tLSLri : // A8.6.88
966 T1sIGenEncodeImm<{0,0,0,?,?}, (outs tGPR:$Rd), (ins tGPR:$Rm, i32imm:$imm5),
968 "lsl", "\t$Rd, $Rm, $imm5",
969 [(set tGPR:$Rd, (shl tGPR:$Rm, (i32 imm:$imm5)))]> {
971 let Inst{10-6} = imm5;
975 def tLSLrr : // A8.6.89
976 T1sItDPEncode<0b0010, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
978 "lsl", "\t$Rdn, $Rm",
979 [(set tGPR:$Rdn, (shl tGPR:$Rn, tGPR:$Rm))]>;
982 def tLSRri : // A8.6.90
983 T1sIGenEncodeImm<{0,0,1,?,?}, (outs tGPR:$Rd), (ins tGPR:$Rm, i32imm:$imm5),
985 "lsr", "\t$Rd, $Rm, $imm5",
986 [(set tGPR:$Rd, (srl tGPR:$Rm, (i32 imm:$imm5)))]> {
988 let Inst{10-6} = imm5;
992 def tLSRrr : // A8.6.91
993 T1sItDPEncode<0b0011, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
995 "lsr", "\t$Rdn, $Rm",
996 [(set tGPR:$Rdn, (srl tGPR:$Rn, tGPR:$Rm))]>;
1000 def tMOVi8 : T1sI<(outs tGPR:$Rd), (ins i32imm:$imm8), IIC_iMOVi,
1001 "mov", "\t$Rd, $imm8",
1002 [(set tGPR:$Rd, imm0_255:$imm8)]>,
1003 T1General<{1,0,0,?,?}> {
1007 let Inst{10-8} = Rd;
1008 let Inst{7-0} = imm8;
1011 // TODO: A7-73: MOV(2) - mov setting flag.
1013 let neverHasSideEffects = 1 in {
1014 // FIXME: Make this predicable.
1015 def tMOVr : T1I<(outs tGPR:$Rd), (ins tGPR:$Rm), IIC_iMOVr,
1016 "mov\t$Rd, $Rm", []>,
1021 // Bits {7-6} are encoded by the T1Special value.
1022 let Inst{5-3} = Rm{2-0};
1023 let Inst{2-0} = Rd{2-0};
1025 let Defs = [CPSR] in
1026 def tMOVSr : T1I<(outs tGPR:$Rd), (ins tGPR:$Rm), IIC_iMOVr,
1027 "movs\t$Rd, $Rm", []>, Encoding16 {
1031 let Inst{15-6} = 0b0000000000;
1036 // FIXME: Make these predicable.
1037 def tMOVgpr2tgpr : T1I<(outs tGPR:$Rd), (ins GPR:$Rm), IIC_iMOVr,
1038 "mov\t$Rd, $Rm", []>,
1039 T1Special<{1,0,0,?}> {
1043 // Bit {7} is encoded by the T1Special value.
1045 let Inst{2-0} = Rd{2-0};
1047 def tMOVtgpr2gpr : T1I<(outs GPR:$Rd), (ins tGPR:$Rm), IIC_iMOVr,
1048 "mov\t$Rd, $Rm", []>,
1049 T1Special<{1,0,?,0}> {
1053 // Bit {6} is encoded by the T1Special value.
1054 let Inst{7} = Rd{3};
1055 let Inst{5-3} = Rm{2-0};
1056 let Inst{2-0} = Rd{2-0};
1058 def tMOVgpr2gpr : T1I<(outs GPR:$Rd), (ins GPR:$Rm), IIC_iMOVr,
1059 "mov\t$Rd, $Rm", []>,
1060 T1Special<{1,0,?,?}> {
1064 let Inst{7} = Rd{3};
1066 let Inst{2-0} = Rd{2-0};
1068 } // neverHasSideEffects
1070 // Multiply register
1071 let isCommutable = 1 in
1072 def tMUL : // A8.6.105 T1
1073 T1sItDPEncode<0b1101, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
1075 "mul", "\t$Rdn, $Rm, $Rdn",
1076 [(set tGPR:$Rdn, (mul tGPR:$Rn, tGPR:$Rm))]>;
1078 // Move inverse register
1079 def tMVN : // A8.6.107
1080 T1sIDPEncode<0b1111, (outs tGPR:$Rd), (ins tGPR:$Rn), IIC_iMVNr,
1081 "mvn", "\t$Rd, $Rn",
1082 [(set tGPR:$Rd, (not tGPR:$Rn))]>;
1084 // Bitwise or register
1085 let isCommutable = 1 in
1086 def tORR : // A8.6.114
1087 T1sItDPEncode<0b1100, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
1089 "orr", "\t$Rdn, $Rm",
1090 [(set tGPR:$Rdn, (or tGPR:$Rn, tGPR:$Rm))]>;
1093 def tREV : // A8.6.134
1094 T1pIMiscEncode<{1,0,1,0,0,0,?}, (outs tGPR:$Rd), (ins tGPR:$Rm),
1096 "rev", "\t$Rd, $Rm",
1097 [(set tGPR:$Rd, (bswap tGPR:$Rm))]>,
1098 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1100 def tREV16 : // A8.6.135
1101 T1pIMiscEncode<{1,0,1,0,0,1,?}, (outs tGPR:$Rd), (ins tGPR:$Rm),
1103 "rev16", "\t$Rd, $Rm",
1105 (or (and (srl tGPR:$Rm, (i32 8)), 0xFF),
1106 (or (and (shl tGPR:$Rm, (i32 8)), 0xFF00),
1107 (or (and (srl tGPR:$Rm, (i32 8)), 0xFF0000),
1108 (and (shl tGPR:$Rm, (i32 8)), 0xFF000000)))))]>,
1109 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1111 def tREVSH : // A8.6.136
1112 T1pIMiscEncode<{1,0,1,0,1,1,?}, (outs tGPR:$Rd), (ins tGPR:$Rm),
1114 "revsh", "\t$Rd, $Rm",
1117 (or (srl (and tGPR:$Rm, 0xFF00), (i32 8)),
1118 (shl tGPR:$Rm, (i32 8))), i16))]>,
1119 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1121 // Rotate right register
1122 def tROR : // A8.6.139
1123 T1sItDPEncode<0b0111, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
1125 "ror", "\t$Rdn, $Rm",
1126 [(set tGPR:$Rdn, (rotr tGPR:$Rn, tGPR:$Rm))]>;
1129 def tRSB : // A8.6.141
1130 T1sIDPEncode<0b1001, (outs tGPR:$Rd), (ins tGPR:$Rn),
1132 "rsb", "\t$Rd, $Rn, #0",
1133 [(set tGPR:$Rd, (ineg tGPR:$Rn))]>;
1135 // Subtract with carry register
1136 let Uses = [CPSR] in
1137 def tSBC : // A8.6.151
1138 T1sItDPEncode<0b0110, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
1140 "sbc", "\t$Rdn, $Rm",
1141 [(set tGPR:$Rdn, (sube tGPR:$Rn, tGPR:$Rm))]>;
1143 // Subtract immediate
1144 def tSUBi3 : // A8.6.210 T1
1145 T1sIGenEncodeImm<0b01111, (outs tGPR:$Rd), (ins tGPR:$Rm, i32imm:$imm3),
1147 "sub", "\t$Rd, $Rm, $imm3",
1148 [(set tGPR:$Rd, (add tGPR:$Rm, imm0_7_neg:$imm3))]> {
1150 let Inst{8-6} = imm3;
1153 def tSUBi8 : // A8.6.210 T2
1154 T1sItGenEncodeImm<{1,1,1,?,?}, (outs tGPR:$Rdn), (ins tGPR:$Rn, i32imm:$imm8),
1156 "sub", "\t$Rdn, $imm8",
1157 [(set tGPR:$Rdn, (add tGPR:$Rn, imm8_255_neg:$imm8))]>;
1159 // Subtract register
1160 def tSUBrr : // A8.6.212
1161 T1sIGenEncode<0b01101, (outs tGPR:$Rd), (ins tGPR:$Rn, tGPR:$Rm),
1163 "sub", "\t$Rd, $Rn, $Rm",
1164 [(set tGPR:$Rd, (sub tGPR:$Rn, tGPR:$Rm))]>;
1166 // TODO: A7-96: STMIA - store multiple.
1169 def tSXTB : // A8.6.222
1170 T1pIMiscEncode<{0,0,1,0,0,1,?}, (outs tGPR:$Rd), (ins tGPR:$Rm),
1172 "sxtb", "\t$Rd, $Rm",
1173 [(set tGPR:$Rd, (sext_inreg tGPR:$Rm, i8))]>,
1174 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1176 // Sign-extend short
1177 def tSXTH : // A8.6.224
1178 T1pIMiscEncode<{0,0,1,0,0,0,?}, (outs tGPR:$Rd), (ins tGPR:$Rm),
1180 "sxth", "\t$Rd, $Rm",
1181 [(set tGPR:$Rd, (sext_inreg tGPR:$Rm, i16))]>,
1182 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1185 let isCompare = 1, isCommutable = 1, Defs = [CPSR] in
1186 def tTST : // A8.6.230
1187 T1pIDPEncode<0b1000, (outs), (ins tGPR:$Rn, tGPR:$Rm), IIC_iTSTr,
1188 "tst", "\t$Rn, $Rm",
1189 [(ARMcmpZ (and_su tGPR:$Rn, tGPR:$Rm), 0)]>;
1192 def tUXTB : // A8.6.262
1193 T1pIMiscEncode<{0,0,1,0,1,1,?}, (outs tGPR:$Rd), (ins tGPR:$Rm),
1195 "uxtb", "\t$Rd, $Rm",
1196 [(set tGPR:$Rd, (and tGPR:$Rm, 0xFF))]>,
1197 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1199 // Zero-extend short
1200 def tUXTH : // A8.6.264
1201 T1pIMiscEncode<{0,0,1,0,1,0,?}, (outs tGPR:$Rd), (ins tGPR:$Rm),
1203 "uxth", "\t$Rd, $Rm",
1204 [(set tGPR:$Rd, (and tGPR:$Rm, 0xFFFF))]>,
1205 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1207 // Conditional move tMOVCCr - Used to implement the Thumb SELECT_CC operation.
1208 // Expanded after instruction selection into a branch sequence.
1209 let usesCustomInserter = 1 in // Expanded after instruction selection.
1210 def tMOVCCr_pseudo :
1211 PseudoInst<(outs tGPR:$dst), (ins tGPR:$false, tGPR:$true, pred:$cc),
1213 [/*(set tGPR:$dst, (ARMcmov tGPR:$false, tGPR:$true, imm:$cc))*/]>;
1216 // 16-bit movcc in IT blocks for Thumb2.
1217 let neverHasSideEffects = 1 in {
1218 def tMOVCCr : T1pIt<(outs GPR:$Rdn), (ins GPR:$Rn, GPR:$Rm), IIC_iCMOVr,
1219 "mov", "\t$Rdn, $Rm", []>,
1220 T1Special<{1,0,?,?}> {
1223 let Inst{7} = Rdn{3};
1225 let Inst{2-0} = Rdn{2-0};
1228 let isMoveImm = 1 in
1229 def tMOVCCi : T1pIt<(outs tGPR:$Rdn), (ins tGPR:$Rn, i32imm:$Rm), IIC_iCMOVi,
1230 "mov", "\t$Rdn, $Rm", []>,
1231 T1General<{1,0,0,?,?}> {
1234 let Inst{10-8} = Rdn;
1238 } // neverHasSideEffects
1240 // tLEApcrel - Load a pc-relative address into a register without offending the
1242 let neverHasSideEffects = 1, isReMaterializable = 1 in
1243 def tLEApcrel : T1I<(outs tGPR:$Rd), (ins i32imm:$label, pred:$p), IIC_iALUi,
1244 "adr${p}\t$Rd, #$label", []>,
1245 T1Encoding<{1,0,1,0,0,?}> {
1248 let Inst{10-8} = Rd;
1249 // FIXME: Add label encoding/fixup
1252 def tLEApcrelJT : T1I<(outs tGPR:$Rd),
1253 (ins i32imm:$label, nohash_imm:$id, pred:$p),
1254 IIC_iALUi, "adr${p}\t$Rd, #${label}_${id}", []>,
1255 T1Encoding<{1,0,1,0,0,?}> {
1258 let Inst{10-8} = Rd;
1259 // FIXME: Add label encoding/fixup
1262 //===----------------------------------------------------------------------===//
1266 // __aeabi_read_tp preserves the registers r1-r3.
1267 let isCall = 1, Defs = [R0, LR], Uses = [SP] in
1268 def tTPsoft : TIx2<0b11110, 0b11, 1, (outs), (ins), IIC_Br,
1269 "bl\t__aeabi_read_tp",
1270 [(set R0, ARMthread_pointer)]> {
1271 // Encoding is 0xf7fffffe.
1272 let Inst = 0xf7fffffe;
1275 //===----------------------------------------------------------------------===//
1276 // SJLJ Exception handling intrinsics
1279 // eh_sjlj_setjmp() is an instruction sequence to store the return address and
1280 // save #0 in R0 for the non-longjmp case. Since by its nature we may be coming
1281 // from some other function to get here, and we're using the stack frame for the
1282 // containing function to save/restore registers, we can't keep anything live in
1283 // regs across the eh_sjlj_setjmp(), else it will almost certainly have been
1284 // tromped upon when we get here from a longjmp(). We force everthing out of
1285 // registers except for our own input by listing the relevant registers in
1286 // Defs. By doing so, we also cause the prologue/epilogue code to actively
1287 // preserve all of the callee-saved resgisters, which is exactly what we want.
1288 // $val is a scratch register for our use.
1289 let Defs = [ R0, R1, R2, R3, R4, R5, R6, R7, R12 ],
1290 hasSideEffects = 1, isBarrier = 1, isCodeGenOnly = 1 in
1291 def tInt_eh_sjlj_setjmp : ThumbXI<(outs),(ins tGPR:$src, tGPR:$val),
1292 AddrModeNone, SizeSpecial, NoItinerary, "","",
1293 [(set R0, (ARMeh_sjlj_setjmp tGPR:$src, tGPR:$val))]>;
1295 // FIXME: Non-Darwin version(s)
1296 let isBarrier = 1, hasSideEffects = 1, isTerminator = 1, isCodeGenOnly = 1,
1297 Defs = [ R7, LR, SP ] in
1298 def tInt_eh_sjlj_longjmp : XI<(outs), (ins GPR:$src, GPR:$scratch),
1299 AddrModeNone, SizeSpecial, IndexModeNone,
1300 Pseudo, NoItinerary, "", "",
1301 [(ARMeh_sjlj_longjmp GPR:$src, GPR:$scratch)]>,
1302 Requires<[IsThumb, IsDarwin]>;
1304 //===----------------------------------------------------------------------===//
1305 // Non-Instruction Patterns
1309 def : T1Pat<(ARMcmpZ tGPR:$Rn, imm0_255:$imm8),
1310 (tCMPi8 tGPR:$Rn, imm0_255:$imm8)>;
1311 def : T1Pat<(ARMcmpZ tGPR:$Rn, tGPR:$Rm),
1312 (tCMPr tGPR:$Rn, tGPR:$Rm)>;
1315 def : T1Pat<(addc tGPR:$lhs, imm0_7:$rhs),
1316 (tADDi3 tGPR:$lhs, imm0_7:$rhs)>;
1317 def : T1Pat<(addc tGPR:$lhs, imm8_255:$rhs),
1318 (tADDi8 tGPR:$lhs, imm8_255:$rhs)>;
1319 def : T1Pat<(addc tGPR:$lhs, tGPR:$rhs),
1320 (tADDrr tGPR:$lhs, tGPR:$rhs)>;
1322 // Subtract with carry
1323 def : T1Pat<(addc tGPR:$lhs, imm0_7_neg:$rhs),
1324 (tSUBi3 tGPR:$lhs, imm0_7_neg:$rhs)>;
1325 def : T1Pat<(addc tGPR:$lhs, imm8_255_neg:$rhs),
1326 (tSUBi8 tGPR:$lhs, imm8_255_neg:$rhs)>;
1327 def : T1Pat<(subc tGPR:$lhs, tGPR:$rhs),
1328 (tSUBrr tGPR:$lhs, tGPR:$rhs)>;
1330 // ConstantPool, GlobalAddress
1331 def : T1Pat<(ARMWrapper tglobaladdr :$dst), (tLEApcrel tglobaladdr :$dst)>;
1332 def : T1Pat<(ARMWrapper tconstpool :$dst), (tLEApcrel tconstpool :$dst)>;
1335 def : T1Pat<(ARMWrapperJT tjumptable:$dst, imm:$id),
1336 (tLEApcrelJT tjumptable:$dst, imm:$id)>;
1339 def : T1Pat<(ARMtcall texternalsym:$func), (tBL texternalsym:$func)>,
1340 Requires<[IsThumb, IsNotDarwin]>;
1341 def : T1Pat<(ARMtcall texternalsym:$func), (tBLr9 texternalsym:$func)>,
1342 Requires<[IsThumb, IsDarwin]>;
1344 def : Tv5Pat<(ARMcall texternalsym:$func), (tBLXi texternalsym:$func)>,
1345 Requires<[IsThumb, HasV5T, IsNotDarwin]>;
1346 def : Tv5Pat<(ARMcall texternalsym:$func), (tBLXi_r9 texternalsym:$func)>,
1347 Requires<[IsThumb, HasV5T, IsDarwin]>;
1349 // Indirect calls to ARM routines
1350 def : Tv5Pat<(ARMcall GPR:$dst), (tBLXr GPR:$dst)>,
1351 Requires<[IsThumb, HasV5T, IsNotDarwin]>;
1352 def : Tv5Pat<(ARMcall GPR:$dst), (tBLXr_r9 GPR:$dst)>,
1353 Requires<[IsThumb, HasV5T, IsDarwin]>;
1355 // zextload i1 -> zextload i8
1356 def : T1Pat<(zextloadi1 t_addrmode_s1:$addr),
1357 (tLDRB t_addrmode_s1:$addr)>;
1359 // extload -> zextload
1360 def : T1Pat<(extloadi1 t_addrmode_s1:$addr), (tLDRB t_addrmode_s1:$addr)>;
1361 def : T1Pat<(extloadi8 t_addrmode_s1:$addr), (tLDRB t_addrmode_s1:$addr)>;
1362 def : T1Pat<(extloadi16 t_addrmode_s2:$addr), (tLDRH t_addrmode_s2:$addr)>;
1364 // If it's impossible to use [r,r] address mode for sextload, select to
1365 // ldr{b|h} + sxt{b|h} instead.
1366 def : T1Pat<(sextloadi8 t_addrmode_s1:$addr),
1367 (tSXTB (tLDRB t_addrmode_s1:$addr))>,
1368 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1369 def : T1Pat<(sextloadi16 t_addrmode_s2:$addr),
1370 (tSXTH (tLDRH t_addrmode_s2:$addr))>,
1371 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1373 def : T1Pat<(sextloadi8 t_addrmode_s1:$addr),
1374 (tASRri (tLSLri (tLDRB t_addrmode_s1:$addr), 24), 24)>;
1375 def : T1Pat<(sextloadi16 t_addrmode_s1:$addr),
1376 (tASRri (tLSLri (tLDRH t_addrmode_s1:$addr), 16), 16)>;
1378 // Large immediate handling.
1381 def : T1Pat<(i32 thumb_immshifted:$src),
1382 (tLSLri (tMOVi8 (thumb_immshifted_val imm:$src)),
1383 (thumb_immshifted_shamt imm:$src))>;
1385 def : T1Pat<(i32 imm0_255_comp:$src),
1386 (tMVN (tMOVi8 (imm_comp_XFORM imm:$src)))>;
1388 // Pseudo instruction that combines ldr from constpool and add pc. This should
1389 // be expanded into two instructions late to allow if-conversion and
1391 let isReMaterializable = 1 in
1392 def tLDRpci_pic : PseudoInst<(outs GPR:$dst), (ins i32imm:$addr, pclabel:$cp),
1394 [(set GPR:$dst, (ARMpic_add (load (ARMWrapper tconstpool:$addr)),
1396 Requires<[IsThumb, IsThumb1Only]>;