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 string EncoderMethod = "getAddrModeS4OpValue";
96 let PrintMethod = "printThumbAddrModeS4Operand";
97 let MIOperandInfo = (ops tGPR:$base, i32imm:$offsimm, tGPR:$offsreg);
98 let ParserMatchClass = MemModeThumbAsmOperand;
101 // t_addrmode_s2 := reg + reg
104 def t_addrmode_s2 : Operand<i32>,
105 ComplexPattern<i32, 3, "SelectThumbAddrModeS2", []> {
106 string EncoderMethod = "getAddrModeS2OpValue";
107 let PrintMethod = "printThumbAddrModeS2Operand";
108 let MIOperandInfo = (ops tGPR:$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 string 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), IIC_Br, "mov\tpc, $Rm",
333 T1Special<{1,0,?,?}> {
336 let Inst{7} = 1; // <Rd> = Inst{7:2-0} = pc
338 let Inst{2-0} = 0b111;
342 // FIXME: remove when we have a way to marking a MI with these properties.
343 let isReturn = 1, isTerminator = 1, isBarrier = 1, mayLoad = 1,
344 hasExtraDefRegAllocReq = 1 in
345 def tPOP_RET : T1I<(outs), (ins pred:$p, reglist:$regs, variable_ops),
347 "pop${p}\t$regs", []>,
348 T1Misc<{1,1,0,?,?,?,?}> {
351 let Inst{8} = regs{15}; // registers = P:'0000000':register_list
352 let Inst{7-0} = regs{7-0};
355 // All calls clobber the non-callee saved registers. SP is marked as a use to
356 // prevent stack-pointer assignments that appear immediately before calls from
357 // potentially appearing dead.
359 // On non-Darwin platforms R9 is callee-saved.
360 Defs = [R0, R1, R2, R3, R12, LR,
361 D0, D1, D2, D3, D4, D5, D6, D7,
362 D16, D17, D18, D19, D20, D21, D22, D23,
363 D24, D25, D26, D27, D28, D29, D30, D31, CPSR, FPSCR],
365 // Also used for Thumb2
366 def tBL : TIx2<0b11110, 0b11, 1,
367 (outs), (ins i32imm:$func, variable_ops), IIC_Br,
369 [(ARMtcall tglobaladdr:$func)]>,
370 Requires<[IsThumb, IsNotDarwin]>;
372 // ARMv5T and above, also used for Thumb2
373 def tBLXi : TIx2<0b11110, 0b11, 0,
374 (outs), (ins i32imm:$func, variable_ops), IIC_Br,
376 [(ARMcall tglobaladdr:$func)]>,
377 Requires<[IsThumb, HasV5T, IsNotDarwin]>;
379 // Also used for Thumb2
380 def tBLXr : TI<(outs), (ins GPR:$func, variable_ops), IIC_Br,
382 [(ARMtcall GPR:$func)]>,
383 Requires<[IsThumb, HasV5T, IsNotDarwin]>,
384 T1Special<{1,1,1,?}>; // A6.2.3 & A8.6.24;
387 let isCodeGenOnly = 1 in
388 def tBX : TIx2<{?,?,?,?,?}, {?,?}, ?,
389 (outs), (ins tGPR:$func, variable_ops), IIC_Br,
390 "mov\tlr, pc\n\tbx\t$func",
391 [(ARMcall_nolink tGPR:$func)]>,
392 Requires<[IsThumb, IsThumb1Only, IsNotDarwin]>;
396 // On Darwin R9 is call-clobbered.
397 // R7 is marked as a use to prevent frame-pointer assignments from being
398 // moved above / below calls.
399 Defs = [R0, R1, R2, R3, R9, R12, LR,
400 D0, D1, D2, D3, D4, D5, D6, D7,
401 D16, D17, D18, D19, D20, D21, D22, D23,
402 D24, D25, D26, D27, D28, D29, D30, D31, CPSR, FPSCR],
404 // Also used for Thumb2
405 def tBLr9 : TIx2<0b11110, 0b11, 1,
406 (outs), (ins pred:$p, i32imm:$func, variable_ops), IIC_Br,
408 [(ARMtcall tglobaladdr:$func)]>,
409 Requires<[IsThumb, IsDarwin]>;
411 // ARMv5T and above, also used for Thumb2
412 def tBLXi_r9 : TIx2<0b11110, 0b11, 0,
413 (outs), (ins pred:$p, i32imm:$func, variable_ops), IIC_Br,
415 [(ARMcall tglobaladdr:$func)]>,
416 Requires<[IsThumb, HasV5T, IsDarwin]>;
418 // Also used for Thumb2
419 def tBLXr_r9 : TI<(outs), (ins pred:$p, GPR:$func, variable_ops), IIC_Br,
421 [(ARMtcall GPR:$func)]>,
422 Requires<[IsThumb, HasV5T, IsDarwin]>,
423 T1Special<{1,1,1,?}> {
426 let Inst{6-3} = func;
427 let Inst{2-0} = 0b000;
431 let isCodeGenOnly = 1 in
432 def tBXr9 : TIx2<{?,?,?,?,?}, {?,?}, ?,
433 (outs), (ins tGPR:$func, variable_ops), IIC_Br,
434 "mov\tlr, pc\n\tbx\t$func",
435 [(ARMcall_nolink tGPR:$func)]>,
436 Requires<[IsThumb, IsThumb1Only, IsDarwin]>;
439 let isBranch = 1, isTerminator = 1, isBarrier = 1 in {
440 let isPredicable = 1 in
441 def tB : T1I<(outs), (ins brtarget:$target), IIC_Br,
442 "b\t$target", [(br bb:$target)]>,
443 T1Encoding<{1,1,1,0,0,?}>;
447 def tBfar : TIx2<0b11110, 0b11, 1, (outs), (ins brtarget:$target), IIC_Br,
450 def tBR_JTr : tPseudoInst<(outs),
451 (ins tGPR:$target, i32imm:$jt, i32imm:$id),
453 [(ARMbrjt tGPR:$target, tjumptable:$jt, imm:$id)]> {
454 list<Predicate> Predicates = [IsThumb, IsThumb1Only];
458 // FIXME: should be able to write a pattern for ARMBrcond, but can't use
459 // a two-value operand where a dag node expects two operands. :(
460 let isBranch = 1, isTerminator = 1 in
461 def tBcc : T1I<(outs), (ins brtarget:$target, pred:$cc), IIC_Br,
463 [/*(ARMbrcond bb:$target, imm:$cc)*/]>,
464 T1Encoding<{1,1,0,1,?,?}>;
466 // Compare and branch on zero / non-zero
467 let isBranch = 1, isTerminator = 1 in {
468 def tCBZ : T1I<(outs), (ins tGPR:$Rn, brtarget:$target), IIC_Br,
469 "cbz\t$Rn, $target", []>,
470 T1Misc<{0,0,?,1,?,?,?}> {
474 let Inst{9} = target{5};
475 let Inst{7-3} = target{4-0};
479 def tCBNZ : T1I<(outs), (ins tGPR:$cmp, brtarget:$target), IIC_Br,
480 "cbnz\t$cmp, $target", []>,
481 T1Misc<{1,0,?,1,?,?,?}> {
485 let Inst{9} = target{5};
486 let Inst{7-3} = target{4-0};
491 // A8.6.218 Supervisor Call (Software Interrupt) -- for disassembly only
492 // A8.6.16 B: Encoding T1
493 // If Inst{11-8} == 0b1111 then SEE SVC
494 let isCall = 1, Uses = [SP] in
495 def tSVC : T1pI<(outs), (ins i32imm:$imm), IIC_Br,
496 "svc", "\t$imm", []>, Encoding16 {
498 let Inst{15-12} = 0b1101;
499 let Inst{11-8} = 0b1111;
503 // The assembler uses 0xDEFE for a trap instruction.
504 let isBarrier = 1, isTerminator = 1 in
505 def tTRAP : TI<(outs), (ins), IIC_Br,
506 "trap", [(trap)]>, Encoding16 {
510 //===----------------------------------------------------------------------===//
511 // Load Store Instructions.
514 let canFoldAsLoad = 1, isReMaterializable = 1 in
515 def tLDR : // A8.6.60
516 T1pILdStEncode<0b100, (outs tGPR:$Rt), (ins t_addrmode_s4:$addr),
517 AddrModeT1_4, IIC_iLoad_r,
518 "ldr", "\t$Rt, $addr",
519 [(set tGPR:$Rt, (load t_addrmode_s4:$addr))]>;
521 def tLDRi: // A8.6.57
522 T1pILdStEncodeImm<0b0110, 1, (outs tGPR:$Rt), (ins t_addrmode_s4:$addr),
523 AddrModeT1_4, IIC_iLoad_r,
524 "ldr", "\t$Rt, $addr",
527 def tLDRB : // A8.6.64
528 T1pILdStEncode<0b110, (outs tGPR:$Rt), (ins t_addrmode_s1:$addr),
529 AddrModeT1_1, IIC_iLoad_bh_r,
530 "ldrb", "\t$Rt, $addr",
531 [(set tGPR:$Rt, (zextloadi8 t_addrmode_s1:$addr))]>;
533 def tLDRBi : // A8.6.61
534 T1pILdStEncodeImm<0b0111, 1, (outs tGPR:$dst), (ins t_addrmode_s1:$addr),
535 AddrModeT1_1, IIC_iLoad_bh_r,
536 "ldrb", "\t$dst, $addr",
539 def tLDRH : // A8.6.76
540 T1pILdStEncode<0b101, (outs tGPR:$dst), (ins t_addrmode_s2:$addr),
541 AddrModeT1_2, IIC_iLoad_bh_r,
542 "ldrh", "\t$dst, $addr",
543 [(set tGPR:$dst, (zextloadi16 t_addrmode_s2:$addr))]>;
545 def tLDRHi: // A8.6.73
546 T1pILdStEncodeImm<0b1000, 1, (outs tGPR:$dst), (ins t_addrmode_s2:$addr),
547 AddrModeT1_2, IIC_iLoad_bh_r,
548 "ldrh", "\t$dst, $addr",
551 let AddedComplexity = 10 in
552 def tLDRSB : // A8.6.80
553 T1pILdStEncode<0b011, (outs tGPR:$dst), (ins t_addrmode_rr:$addr),
554 AddrModeT1_1, IIC_iLoad_bh_r,
555 "ldrsb", "\t$dst, $addr",
556 [(set tGPR:$dst, (sextloadi8 t_addrmode_rr:$addr))]>;
558 let AddedComplexity = 10 in
559 def tLDRSH : // A8.6.84
560 T1pILdStEncode<0b111, (outs tGPR:$dst), (ins t_addrmode_rr:$addr),
561 AddrModeT1_2, IIC_iLoad_bh_r,
562 "ldrsh", "\t$dst, $addr",
563 [(set tGPR:$dst, (sextloadi16 t_addrmode_rr:$addr))]>;
565 let canFoldAsLoad = 1 in
566 def tLDRspi : T1pIs<(outs tGPR:$dst), (ins t_addrmode_sp:$addr), IIC_iLoad_i,
567 "ldr", "\t$dst, $addr",
568 [(set tGPR:$dst, (load t_addrmode_sp:$addr))]>,
571 // Special instruction for restore. It cannot clobber condition register
572 // when it's expanded by eliminateCallFramePseudoInstr().
573 let canFoldAsLoad = 1, mayLoad = 1, neverHasSideEffects = 1 in
574 def tRestore : T1pIs<(outs tGPR:$dst), (ins t_addrmode_sp:$addr), IIC_iLoad_i,
575 "ldr", "\t$dst, $addr", []>,
579 // FIXME: Use ldr.n to work around a Darwin assembler bug.
580 let canFoldAsLoad = 1, isReMaterializable = 1 in
581 def tLDRpci : T1pIs<(outs tGPR:$Rt), (ins i32imm:$addr), IIC_iLoad_i,
582 "ldr", ".n\t$Rt, $addr",
583 [(set tGPR:$Rt, (load (ARMWrapper tconstpool:$addr)))]>,
584 T1Encoding<{0,1,0,0,1,?}> {
588 // FIXME: Finish for the addr.
591 // Special LDR for loads from non-pc-relative constpools.
592 let canFoldAsLoad = 1, mayLoad = 1, neverHasSideEffects = 1,
593 isReMaterializable = 1 in
594 def tLDRcp : T1pIs<(outs tGPR:$dst), (ins i32imm:$addr), IIC_iLoad_i,
595 "ldr", "\t$dst, $addr", []>,
598 def tSTR : // A8.6.194
599 T1pILdStEncode<0b000, (outs), (ins tGPR:$src, t_addrmode_s4:$addr),
600 AddrModeT1_4, IIC_iStore_r,
601 "str", "\t$src, $addr",
602 [(store tGPR:$src, t_addrmode_s4:$addr)]>;
604 def tSTRi : // A8.6.192
605 T1pILdStEncodeImm<0b0110, 0, (outs), (ins tGPR:$src, t_addrmode_s4:$addr),
606 AddrModeT1_4, IIC_iStore_r,
607 "str", "\t$src, $addr",
610 def tSTRB : // A8.6.197
611 T1pILdStEncode<0b010, (outs), (ins tGPR:$src, t_addrmode_s1:$addr),
612 AddrModeT1_1, IIC_iStore_bh_r,
613 "strb", "\t$src, $addr",
614 [(truncstorei8 tGPR:$src, t_addrmode_s1:$addr)]>;
616 def tSTRBi : // A8.6.195
617 T1pILdStEncodeImm<0b0111, 0, (outs), (ins tGPR:$src, t_addrmode_s1:$addr),
618 AddrModeT1_1, IIC_iStore_bh_r,
619 "strb", "\t$src, $addr",
622 def tSTRH : // A8.6.207
623 T1pILdStEncode<0b001, (outs), (ins tGPR:$src, t_addrmode_s2:$addr),
624 AddrModeT1_2, IIC_iStore_bh_r,
625 "strh", "\t$src, $addr",
626 [(truncstorei16 tGPR:$src, t_addrmode_s2:$addr)]>;
628 def tSTRHi : // A8.6.205
629 T1pILdStEncodeImm<0b1000, 0, (outs), (ins tGPR:$src, t_addrmode_s2:$addr),
630 AddrModeT1_2, IIC_iStore_bh_r,
631 "strh", "\t$src, $addr",
634 def tSTRspi : T1pIs<(outs), (ins tGPR:$src, t_addrmode_sp:$addr), IIC_iStore_i,
635 "str", "\t$src, $addr",
636 [(store tGPR:$src, t_addrmode_sp:$addr)]>,
639 let mayStore = 1, neverHasSideEffects = 1 in
640 // Special instruction for spill. It cannot clobber condition register when it's
641 // expanded by eliminateCallFramePseudoInstr().
642 def tSpill : T1pIs<(outs), (ins tGPR:$src, t_addrmode_sp:$addr), IIC_iStore_i,
643 "str", "\t$src, $addr", []>,
646 //===----------------------------------------------------------------------===//
647 // Load / store multiple Instructions.
650 multiclass thumb_ldst_mult<string asm, InstrItinClass itin,
651 InstrItinClass itin_upd, bits<6> T1Enc,
654 T1I<(outs), (ins GPR:$Rn, pred:$p, reglist:$regs, variable_ops),
655 itin, !strconcat(asm, "ia${p}\t$Rn, $regs"), []>,
660 let Inst{7-0} = regs;
663 T1It<(outs GPR:$wb), (ins GPR:$Rn, pred:$p, reglist:$regs, variable_ops),
664 itin_upd, !strconcat(asm, "ia${p}\t$Rn!, $regs"), "$Rn = $wb", []>,
669 let Inst{7-0} = regs;
673 // These require base address to be written back or one of the loaded regs.
674 let neverHasSideEffects = 1 in {
676 let mayLoad = 1, hasExtraDefRegAllocReq = 1 in
677 defm tLDM : thumb_ldst_mult<"ldm", IIC_iLoad_m, IIC_iLoad_mu,
680 let mayStore = 1, hasExtraSrcRegAllocReq = 1 in
681 defm tSTM : thumb_ldst_mult<"stm", IIC_iStore_m, IIC_iStore_mu,
684 } // neverHasSideEffects
686 let mayLoad = 1, Uses = [SP], Defs = [SP], hasExtraDefRegAllocReq = 1 in
687 def tPOP : T1I<(outs), (ins pred:$p, reglist:$regs, variable_ops),
689 "pop${p}\t$regs", []>,
690 T1Misc<{1,1,0,?,?,?,?}> {
692 let Inst{8} = regs{15};
693 let Inst{7-0} = regs{7-0};
696 let mayStore = 1, Uses = [SP], Defs = [SP], hasExtraSrcRegAllocReq = 1 in
697 def tPUSH : T1I<(outs), (ins pred:$p, reglist:$regs, variable_ops),
699 "push${p}\t$regs", []>,
700 T1Misc<{0,1,0,?,?,?,?}> {
702 let Inst{8} = regs{14};
703 let Inst{7-0} = regs{7-0};
706 //===----------------------------------------------------------------------===//
707 // Arithmetic Instructions.
710 // Helper classes for encoding T1pI patterns:
711 class T1pIDPEncode<bits<4> opA, dag oops, dag iops, InstrItinClass itin,
712 string opc, string asm, list<dag> pattern>
713 : T1pI<oops, iops, itin, opc, asm, pattern>,
714 T1DataProcessing<opA> {
720 class T1pIMiscEncode<bits<7> opA, dag oops, dag iops, InstrItinClass itin,
721 string opc, string asm, list<dag> pattern>
722 : T1pI<oops, iops, itin, opc, asm, pattern>,
730 // Helper classes for encoding T1sI patterns:
731 class T1sIDPEncode<bits<4> opA, dag oops, dag iops, InstrItinClass itin,
732 string opc, string asm, list<dag> pattern>
733 : T1sI<oops, iops, itin, opc, asm, pattern>,
734 T1DataProcessing<opA> {
740 class T1sIGenEncode<bits<5> opA, dag oops, dag iops, InstrItinClass itin,
741 string opc, string asm, list<dag> pattern>
742 : T1sI<oops, iops, itin, opc, asm, pattern>,
751 class T1sIGenEncodeImm<bits<5> opA, dag oops, dag iops, InstrItinClass itin,
752 string opc, string asm, list<dag> pattern>
753 : T1sI<oops, iops, itin, opc, asm, pattern>,
761 // Helper classes for encoding T1sIt patterns:
762 class T1sItDPEncode<bits<4> opA, dag oops, dag iops, InstrItinClass itin,
763 string opc, string asm, list<dag> pattern>
764 : T1sIt<oops, iops, itin, opc, asm, pattern>,
765 T1DataProcessing<opA> {
771 class T1sItGenEncodeImm<bits<5> opA, dag oops, dag iops, InstrItinClass itin,
772 string opc, string asm, list<dag> pattern>
773 : T1sIt<oops, iops, itin, opc, asm, pattern>,
777 let Inst{10-8} = Rdn;
778 let Inst{7-0} = imm8;
781 // Add with carry register
782 let isCommutable = 1, Uses = [CPSR] in
784 T1sItDPEncode<0b0101, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm), IIC_iALUr,
785 "adc", "\t$Rdn, $Rm",
786 [(set tGPR:$Rdn, (adde tGPR:$Rn, tGPR:$Rm))]>;
789 def tADDi3 : // A8.6.4 T1
790 T1sIGenEncodeImm<0b01110, (outs tGPR:$Rd), (ins tGPR:$Rm, i32imm:$imm3), IIC_iALUi,
791 "add", "\t$Rd, $Rm, $imm3",
792 [(set tGPR:$Rd, (add tGPR:$Rm, imm0_7:$imm3))]> {
794 let Inst{8-6} = imm3;
797 def tADDi8 : // A8.6.4 T2
798 T1sItGenEncodeImm<{1,1,0,?,?}, (outs tGPR:$Rdn), (ins tGPR:$Rn, i32imm:$imm8),
800 "add", "\t$Rdn, $imm8",
801 [(set tGPR:$Rdn, (add tGPR:$Rn, imm8_255:$imm8))]>;
804 let isCommutable = 1 in
805 def tADDrr : // A8.6.6 T1
806 T1sIGenEncode<0b01100, (outs tGPR:$Rd), (ins tGPR:$Rn, tGPR:$Rm),
808 "add", "\t$Rd, $Rn, $Rm",
809 [(set tGPR:$Rd, (add tGPR:$Rn, tGPR:$Rm))]>;
811 let neverHasSideEffects = 1 in
812 def tADDhirr : T1pIt<(outs GPR:$Rdn), (ins GPR:$Rn, GPR:$Rm), IIC_iALUr,
813 "add", "\t$Rdn, $Rm", []>,
814 T1Special<{0,0,?,?}> {
818 let Inst{7} = Rdn{3};
820 let Inst{2-0} = Rdn{2-0};
824 let isCommutable = 1 in
825 def tAND : // A8.6.12
826 T1sItDPEncode<0b0000, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
828 "and", "\t$Rdn, $Rm",
829 [(set tGPR:$Rdn, (and tGPR:$Rn, tGPR:$Rm))]>;
832 def tASRri : // A8.6.14
833 T1sIGenEncodeImm<{0,1,0,?,?}, (outs tGPR:$Rd), (ins tGPR:$Rm, i32imm:$imm5),
835 "asr", "\t$Rd, $Rm, $imm5",
836 [(set tGPR:$Rd, (sra tGPR:$Rm, (i32 imm:$imm5)))]> {
838 let Inst{10-6} = imm5;
842 def tASRrr : // A8.6.15
843 T1sItDPEncode<0b0100, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
845 "asr", "\t$Rdn, $Rm",
846 [(set tGPR:$Rdn, (sra tGPR:$Rn, tGPR:$Rm))]>;
849 def tBIC : // A8.6.20
850 T1sItDPEncode<0b1110, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
852 "bic", "\t$Rdn, $Rm",
853 [(set tGPR:$Rdn, (and tGPR:$Rn, (not tGPR:$Rm)))]>;
856 let isCompare = 1, Defs = [CPSR] in {
857 //FIXME: Disable CMN, as CCodes are backwards from compare expectations
858 // Compare-to-zero still works out, just not the relationals
859 //def tCMN : // A8.6.33
860 // T1pIDPEncode<0b1011, (outs), (ins tGPR:$lhs, tGPR:$rhs),
862 // "cmn", "\t$lhs, $rhs",
863 // [(ARMcmp tGPR:$lhs, (ineg tGPR:$rhs))]>;
865 def tCMNz : // A8.6.33
866 T1pIDPEncode<0b1011, (outs), (ins tGPR:$Rn, tGPR:$Rm),
869 [(ARMcmpZ tGPR:$Rn, (ineg tGPR:$Rm))]>;
871 } // isCompare = 1, Defs = [CPSR]
874 let isCompare = 1, Defs = [CPSR] in {
875 def tCMPi8 : T1pI<(outs), (ins tGPR:$Rn, i32imm:$imm8), IIC_iCMPi,
876 "cmp", "\t$Rn, $imm8",
877 [(ARMcmp tGPR:$Rn, imm0_255:$imm8)]>,
878 T1General<{1,0,1,?,?}> {
883 let Inst{7-0} = imm8;
886 def tCMPzi8 : T1pI<(outs), (ins tGPR:$Rn, i32imm:$imm8), IIC_iCMPi,
887 "cmp", "\t$Rn, $imm8",
888 [(ARMcmpZ tGPR:$Rn, imm0_255:$imm8)]>,
889 T1General<{1,0,1,?,?}> {
893 let Inst{7-0} = 0x00;
897 def tCMPr : // A8.6.36 T1
898 T1pIDPEncode<0b1010, (outs), (ins tGPR:$Rn, tGPR:$Rm),
901 [(ARMcmp tGPR:$Rn, tGPR:$Rm)]>;
903 def tCMPzr : // A8.6.36 T1
904 T1pIDPEncode<0b1010, (outs), (ins tGPR:$Rn, tGPR:$Rm), IIC_iCMPr,
906 [(ARMcmpZ tGPR:$Rn, tGPR:$Rm)]>;
908 def tCMPhir : T1pI<(outs), (ins GPR:$Rn, GPR:$Rm), IIC_iCMPr,
909 "cmp", "\t$Rn, $Rm", []>,
910 T1Special<{0,1,?,?}> {
916 let Inst{2-0} = Rn{2-0};
918 def tCMPzhir : T1pI<(outs), (ins GPR:$lhs, GPR:$rhs), IIC_iCMPr,
919 "cmp", "\t$lhs, $rhs", []>,
920 T1Special<{0,1,?,?}> {
926 let Inst{2-0} = Rn{2-0};
929 } // isCompare = 1, Defs = [CPSR]
933 let isCommutable = 1 in
934 def tEOR : // A8.6.45
935 T1sItDPEncode<0b0001, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
937 "eor", "\t$Rdn, $Rm",
938 [(set tGPR:$Rdn, (xor tGPR:$Rn, tGPR:$Rm))]>;
941 def tLSLri : // A8.6.88
942 T1sIGenEncodeImm<{0,0,0,?,?}, (outs tGPR:$Rd), (ins tGPR:$Rm, i32imm:$imm5),
944 "lsl", "\t$Rd, $Rm, $imm5",
945 [(set tGPR:$Rd, (shl tGPR:$Rm, (i32 imm:$imm5)))]> {
947 let Inst{10-6} = imm5;
951 def tLSLrr : // A8.6.89
952 T1sItDPEncode<0b0010, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
954 "lsl", "\t$Rdn, $Rm",
955 [(set tGPR:$Rdn, (shl tGPR:$Rn, tGPR:$Rm))]>;
958 def tLSRri : // A8.6.90
959 T1sIGenEncodeImm<{0,0,1,?,?}, (outs tGPR:$Rd), (ins tGPR:$Rm, i32imm:$imm5),
961 "lsr", "\t$Rd, $Rm, $imm5",
962 [(set tGPR:$Rd, (srl tGPR:$Rm, (i32 imm:$imm5)))]> {
964 let Inst{10-6} = imm5;
968 def tLSRrr : // A8.6.91
969 T1sItDPEncode<0b0011, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
971 "lsr", "\t$Rdn, $Rm",
972 [(set tGPR:$Rdn, (srl tGPR:$Rn, tGPR:$Rm))]>;
976 def tMOVi8 : T1sI<(outs tGPR:$Rd), (ins i32imm:$imm8), IIC_iMOVi,
977 "mov", "\t$Rd, $imm8",
978 [(set tGPR:$Rd, imm0_255:$imm8)]>,
979 T1General<{1,0,0,?,?}> {
984 let Inst{7-0} = imm8;
987 // TODO: A7-73: MOV(2) - mov setting flag.
989 let neverHasSideEffects = 1 in {
990 // FIXME: Make this predicable.
991 def tMOVr : T1I<(outs tGPR:$dst), (ins tGPR:$src), IIC_iMOVr,
992 "mov\t$dst, $src", []>,
995 def tMOVSr : T1I<(outs tGPR:$dst), (ins tGPR:$src), IIC_iMOVr,
996 "movs\t$dst, $src", []>, Encoding16 {
997 let Inst{15-6} = 0b0000000000;
1000 // FIXME: Make these predicable.
1001 def tMOVgpr2tgpr : T1I<(outs tGPR:$dst), (ins GPR:$src), IIC_iMOVr,
1002 "mov\t$dst, $src", []>,
1003 T1Special<{1,0,0,?}>;
1004 def tMOVtgpr2gpr : T1I<(outs GPR:$dst), (ins tGPR:$src), IIC_iMOVr,
1005 "mov\t$dst, $src", []>,
1006 T1Special<{1,0,?,0}>;
1007 def tMOVgpr2gpr : T1I<(outs GPR:$dst), (ins GPR:$src), IIC_iMOVr,
1008 "mov\t$dst, $src", []>,
1009 T1Special<{1,0,?,?}>;
1010 } // neverHasSideEffects
1012 // Multiply register
1013 let isCommutable = 1 in
1014 def tMUL : // A8.6.105 T1
1015 T1sItDPEncode<0b1101, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
1017 "mul", "\t$Rdn, $Rm, $Rdn",
1018 [(set tGPR:$Rdn, (mul tGPR:$Rn, tGPR:$Rm))]>;
1020 // Move inverse register
1021 def tMVN : // A8.6.107
1022 T1sIDPEncode<0b1111, (outs tGPR:$Rd), (ins tGPR:$Rn), IIC_iMVNr,
1023 "mvn", "\t$Rd, $Rn",
1024 [(set tGPR:$Rd, (not tGPR:$Rn))]>;
1026 // Bitwise or register
1027 let isCommutable = 1 in
1028 def tORR : // A8.6.114
1029 T1sItDPEncode<0b1100, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
1031 "orr", "\t$Rdn, $Rm",
1032 [(set tGPR:$Rdn, (or tGPR:$Rn, tGPR:$Rm))]>;
1035 def tREV : // A8.6.134
1036 T1pIMiscEncode<{1,0,1,0,0,0,?}, (outs tGPR:$Rd), (ins tGPR:$Rm),
1038 "rev", "\t$Rd, $Rm",
1039 [(set tGPR:$Rd, (bswap tGPR:$Rm))]>,
1040 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1042 def tREV16 : // A8.6.135
1043 T1pIMiscEncode<{1,0,1,0,0,1,?}, (outs tGPR:$Rd), (ins tGPR:$Rm),
1045 "rev16", "\t$Rd, $Rm",
1047 (or (and (srl tGPR:$Rm, (i32 8)), 0xFF),
1048 (or (and (shl tGPR:$Rm, (i32 8)), 0xFF00),
1049 (or (and (srl tGPR:$Rm, (i32 8)), 0xFF0000),
1050 (and (shl tGPR:$Rm, (i32 8)), 0xFF000000)))))]>,
1051 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1053 def tREVSH : // A8.6.136
1054 T1pIMiscEncode<{1,0,1,0,1,1,?}, (outs tGPR:$Rd), (ins tGPR:$Rm),
1056 "revsh", "\t$Rd, $Rm",
1059 (or (srl (and tGPR:$Rm, 0xFF00), (i32 8)),
1060 (shl tGPR:$Rm, (i32 8))), i16))]>,
1061 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1063 // Rotate right register
1064 def tROR : // A8.6.139
1065 T1sItDPEncode<0b0111, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
1067 "ror", "\t$Rdn, $Rm",
1068 [(set tGPR:$Rdn, (rotr tGPR:$Rn, tGPR:$Rm))]>;
1071 def tRSB : // A8.6.141
1072 T1sIDPEncode<0b1001, (outs tGPR:$Rd), (ins tGPR:$Rn),
1074 "rsb", "\t$Rd, $Rn, #0",
1075 [(set tGPR:$Rd, (ineg tGPR:$Rn))]>;
1077 // Subtract with carry register
1078 let Uses = [CPSR] in
1079 def tSBC : // A8.6.151
1080 T1sItDPEncode<0b0110, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
1082 "sbc", "\t$Rdn, $Rm",
1083 [(set tGPR:$Rdn, (sube tGPR:$Rn, tGPR:$Rm))]>;
1085 // Subtract immediate
1086 def tSUBi3 : // A8.6.210 T1
1087 T1sIGenEncodeImm<0b01111, (outs tGPR:$Rd), (ins tGPR:$Rm, i32imm:$imm3),
1089 "sub", "\t$Rd, $Rm, $imm3",
1090 [(set tGPR:$Rd, (add tGPR:$Rm, imm0_7_neg:$imm3))]> {
1092 let Inst{8-6} = imm3;
1095 def tSUBi8 : // A8.6.210 T2
1096 T1sItGenEncodeImm<{1,1,1,?,?}, (outs tGPR:$Rdn), (ins tGPR:$Rn, i32imm:$imm8),
1098 "sub", "\t$Rdn, $imm8",
1099 [(set tGPR:$Rdn, (add tGPR:$Rn, imm8_255_neg:$imm8))]>;
1101 // Subtract register
1102 def tSUBrr : // A8.6.212
1103 T1sIGenEncode<0b01101, (outs tGPR:$Rd), (ins tGPR:$Rn, tGPR:$Rm),
1105 "sub", "\t$Rd, $Rn, $Rm",
1106 [(set tGPR:$Rd, (sub tGPR:$Rn, tGPR:$Rm))]>;
1108 // TODO: A7-96: STMIA - store multiple.
1111 def tSXTB : // A8.6.222
1112 T1pIMiscEncode<{0,0,1,0,0,1,?}, (outs tGPR:$Rd), (ins tGPR:$Rm),
1114 "sxtb", "\t$Rd, $Rm",
1115 [(set tGPR:$Rd, (sext_inreg tGPR:$Rm, i8))]>,
1116 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1118 // Sign-extend short
1119 def tSXTH : // A8.6.224
1120 T1pIMiscEncode<{0,0,1,0,0,0,?}, (outs tGPR:$Rd), (ins tGPR:$Rm),
1122 "sxth", "\t$Rd, $Rm",
1123 [(set tGPR:$Rd, (sext_inreg tGPR:$Rm, i16))]>,
1124 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1127 let isCompare = 1, isCommutable = 1, Defs = [CPSR] in
1128 def tTST : // A8.6.230
1129 T1pIDPEncode<0b1000, (outs), (ins tGPR:$Rn, tGPR:$Rm), IIC_iTSTr,
1130 "tst", "\t$Rn, $Rm",
1131 [(ARMcmpZ (and_su tGPR:$Rn, tGPR:$Rm), 0)]>;
1134 def tUXTB : // A8.6.262
1135 T1pIMiscEncode<{0,0,1,0,1,1,?}, (outs tGPR:$Rd), (ins tGPR:$Rm),
1137 "uxtb", "\t$Rd, $Rm",
1138 [(set tGPR:$Rd, (and tGPR:$Rm, 0xFF))]>,
1139 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1141 // Zero-extend short
1142 def tUXTH : // A8.6.264
1143 T1pIMiscEncode<{0,0,1,0,1,0,?}, (outs tGPR:$Rd), (ins tGPR:$Rm),
1145 "uxth", "\t$Rd, $Rm",
1146 [(set tGPR:$Rd, (and tGPR:$Rm, 0xFFFF))]>,
1147 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1149 // Conditional move tMOVCCr - Used to implement the Thumb SELECT_CC operation.
1150 // Expanded after instruction selection into a branch sequence.
1151 let usesCustomInserter = 1 in // Expanded after instruction selection.
1152 def tMOVCCr_pseudo :
1153 PseudoInst<(outs tGPR:$dst), (ins tGPR:$false, tGPR:$true, pred:$cc),
1155 [/*(set tGPR:$dst, (ARMcmov tGPR:$false, tGPR:$true, imm:$cc))*/]>;
1158 // 16-bit movcc in IT blocks for Thumb2.
1159 let neverHasSideEffects = 1 in {
1160 def tMOVCCr : T1pIt<(outs GPR:$Rdn), (ins GPR:$Rn, GPR:$Rm), IIC_iCMOVr,
1161 "mov", "\t$Rdn, $Rm", []>,
1162 T1Special<{1,0,?,?}> {
1165 let Inst{7} = Rdn{3};
1167 let Inst{2-0} = Rdn{2-0};
1170 let isMoveImm = 1 in
1171 def tMOVCCi : T1pIt<(outs tGPR:$Rdn), (ins tGPR:$Rn, i32imm:$Rm), IIC_iCMOVi,
1172 "mov", "\t$Rdn, $Rm", []>,
1173 T1General<{1,0,0,?,?}> {
1176 let Inst{10-8} = Rdn;
1180 } // neverHasSideEffects
1182 // tLEApcrel - Load a pc-relative address into a register without offending the
1184 let neverHasSideEffects = 1, isReMaterializable = 1 in
1185 def tLEApcrel : T1I<(outs tGPR:$Rd), (ins i32imm:$label, pred:$p), IIC_iALUi,
1186 "adr${p}\t$Rd, #$label", []>,
1187 T1Encoding<{1,0,1,0,0,?}> {
1190 let Inst{10-8} = Rd;
1191 // FIXME: Add label encoding/fixup
1194 def tLEApcrelJT : T1I<(outs tGPR:$Rd),
1195 (ins i32imm:$label, nohash_imm:$id, pred:$p),
1196 IIC_iALUi, "adr${p}\t$Rd, #${label}_${id}", []>,
1197 T1Encoding<{1,0,1,0,0,?}> {
1200 let Inst{10-8} = Rd;
1201 // FIXME: Add label encoding/fixup
1204 //===----------------------------------------------------------------------===//
1208 // __aeabi_read_tp preserves the registers r1-r3.
1209 let isCall = 1, Defs = [R0, LR], Uses = [SP] in
1210 def tTPsoft : TIx2<0b11110, 0b11, 1, (outs), (ins), IIC_Br,
1211 "bl\t__aeabi_read_tp",
1212 [(set R0, ARMthread_pointer)]> {
1213 // Encoding is 0xf7fffffe.
1214 let Inst = 0xf7fffffe;
1217 //===----------------------------------------------------------------------===//
1218 // SJLJ Exception handling intrinsics
1221 // eh_sjlj_setjmp() is an instruction sequence to store the return address and
1222 // save #0 in R0 for the non-longjmp case. Since by its nature we may be coming
1223 // from some other function to get here, and we're using the stack frame for the
1224 // containing function to save/restore registers, we can't keep anything live in
1225 // regs across the eh_sjlj_setjmp(), else it will almost certainly have been
1226 // tromped upon when we get here from a longjmp(). We force everthing out of
1227 // registers except for our own input by listing the relevant registers in
1228 // Defs. By doing so, we also cause the prologue/epilogue code to actively
1229 // preserve all of the callee-saved resgisters, which is exactly what we want.
1230 // $val is a scratch register for our use.
1231 let Defs = [ R0, R1, R2, R3, R4, R5, R6, R7, R12 ],
1232 hasSideEffects = 1, isBarrier = 1, isCodeGenOnly = 1 in
1233 def tInt_eh_sjlj_setjmp : ThumbXI<(outs),(ins tGPR:$src, tGPR:$val),
1234 AddrModeNone, SizeSpecial, NoItinerary, "","",
1235 [(set R0, (ARMeh_sjlj_setjmp tGPR:$src, tGPR:$val))]>;
1237 // FIXME: Non-Darwin version(s)
1238 let isBarrier = 1, hasSideEffects = 1, isTerminator = 1, isCodeGenOnly = 1,
1239 Defs = [ R7, LR, SP ] in
1240 def tInt_eh_sjlj_longjmp : XI<(outs), (ins GPR:$src, GPR:$scratch),
1241 AddrModeNone, SizeSpecial, IndexModeNone,
1242 Pseudo, NoItinerary, "", "",
1243 [(ARMeh_sjlj_longjmp GPR:$src, GPR:$scratch)]>,
1244 Requires<[IsThumb, IsDarwin]>;
1246 //===----------------------------------------------------------------------===//
1247 // Non-Instruction Patterns
1251 def : T1Pat<(addc tGPR:$lhs, imm0_7:$rhs),
1252 (tADDi3 tGPR:$lhs, imm0_7:$rhs)>;
1253 def : T1Pat<(addc tGPR:$lhs, imm8_255:$rhs),
1254 (tADDi8 tGPR:$lhs, imm8_255:$rhs)>;
1255 def : T1Pat<(addc tGPR:$lhs, tGPR:$rhs),
1256 (tADDrr tGPR:$lhs, tGPR:$rhs)>;
1258 // Subtract with carry
1259 def : T1Pat<(addc tGPR:$lhs, imm0_7_neg:$rhs),
1260 (tSUBi3 tGPR:$lhs, imm0_7_neg:$rhs)>;
1261 def : T1Pat<(addc tGPR:$lhs, imm8_255_neg:$rhs),
1262 (tSUBi8 tGPR:$lhs, imm8_255_neg:$rhs)>;
1263 def : T1Pat<(subc tGPR:$lhs, tGPR:$rhs),
1264 (tSUBrr tGPR:$lhs, tGPR:$rhs)>;
1266 // ConstantPool, GlobalAddress
1267 def : T1Pat<(ARMWrapper tglobaladdr :$dst), (tLEApcrel tglobaladdr :$dst)>;
1268 def : T1Pat<(ARMWrapper tconstpool :$dst), (tLEApcrel tconstpool :$dst)>;
1271 def : T1Pat<(ARMWrapperJT tjumptable:$dst, imm:$id),
1272 (tLEApcrelJT tjumptable:$dst, imm:$id)>;
1275 def : T1Pat<(ARMtcall texternalsym:$func), (tBL texternalsym:$func)>,
1276 Requires<[IsThumb, IsNotDarwin]>;
1277 def : T1Pat<(ARMtcall texternalsym:$func), (tBLr9 texternalsym:$func)>,
1278 Requires<[IsThumb, IsDarwin]>;
1280 def : Tv5Pat<(ARMcall texternalsym:$func), (tBLXi texternalsym:$func)>,
1281 Requires<[IsThumb, HasV5T, IsNotDarwin]>;
1282 def : Tv5Pat<(ARMcall texternalsym:$func), (tBLXi_r9 texternalsym:$func)>,
1283 Requires<[IsThumb, HasV5T, IsDarwin]>;
1285 // Indirect calls to ARM routines
1286 def : Tv5Pat<(ARMcall GPR:$dst), (tBLXr GPR:$dst)>,
1287 Requires<[IsThumb, HasV5T, IsNotDarwin]>;
1288 def : Tv5Pat<(ARMcall GPR:$dst), (tBLXr_r9 GPR:$dst)>,
1289 Requires<[IsThumb, HasV5T, IsDarwin]>;
1291 // zextload i1 -> zextload i8
1292 def : T1Pat<(zextloadi1 t_addrmode_s1:$addr),
1293 (tLDRB t_addrmode_s1:$addr)>;
1295 // extload -> zextload
1296 def : T1Pat<(extloadi1 t_addrmode_s1:$addr), (tLDRB t_addrmode_s1:$addr)>;
1297 def : T1Pat<(extloadi8 t_addrmode_s1:$addr), (tLDRB t_addrmode_s1:$addr)>;
1298 def : T1Pat<(extloadi16 t_addrmode_s2:$addr), (tLDRH t_addrmode_s2:$addr)>;
1300 // If it's impossible to use [r,r] address mode for sextload, select to
1301 // ldr{b|h} + sxt{b|h} instead.
1302 def : T1Pat<(sextloadi8 t_addrmode_s1:$addr),
1303 (tSXTB (tLDRB t_addrmode_s1:$addr))>,
1304 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1305 def : T1Pat<(sextloadi16 t_addrmode_s2:$addr),
1306 (tSXTH (tLDRH t_addrmode_s2:$addr))>,
1307 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1309 def : T1Pat<(sextloadi8 t_addrmode_s1:$addr),
1310 (tASRri (tLSLri (tLDRB t_addrmode_s1:$addr), 24), 24)>;
1311 def : T1Pat<(sextloadi16 t_addrmode_s1:$addr),
1312 (tASRri (tLSLri (tLDRH t_addrmode_s1:$addr), 16), 16)>;
1314 // Large immediate handling.
1317 def : T1Pat<(i32 thumb_immshifted:$src),
1318 (tLSLri (tMOVi8 (thumb_immshifted_val imm:$src)),
1319 (thumb_immshifted_shamt imm:$src))>;
1321 def : T1Pat<(i32 imm0_255_comp:$src),
1322 (tMVN (tMOVi8 (imm_comp_XFORM imm:$src)))>;
1324 // Pseudo instruction that combines ldr from constpool and add pc. This should
1325 // be expanded into two instructions late to allow if-conversion and
1327 let isReMaterializable = 1 in
1328 def tLDRpci_pic : PseudoInst<(outs GPR:$dst), (ins i32imm:$addr, pclabel:$cp),
1330 [(set GPR:$dst, (ARMpic_add (load (ARMWrapper tconstpool:$addr)),
1332 Requires<[IsThumb, IsThumb1Only]>;