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_brtarget : Operand<i32> {
78 let EncoderMethod = "getThumbBRTargetOpValue";
81 def t_bltarget : Operand<i32> {
82 let EncoderMethod = "getThumbBLTargetOpValue";
85 def MemModeThumbAsmOperand : AsmOperandClass {
86 let Name = "MemModeThumb";
87 let SuperClasses = [];
90 // t_addrmode_rr := reg + reg
92 def t_addrmode_rr : Operand<i32>,
93 ComplexPattern<i32, 2, "SelectThumbAddrModeRR", []> {
94 let PrintMethod = "printThumbAddrModeRROperand";
95 let MIOperandInfo = (ops tGPR:$base, tGPR:$offsreg);
98 // t_addrmode_s4 := reg + reg
101 def t_addrmode_s4 : Operand<i32>,
102 ComplexPattern<i32, 3, "SelectThumbAddrModeS4", []> {
103 let EncoderMethod = "getAddrModeS4OpValue";
104 let PrintMethod = "printThumbAddrModeS4Operand";
105 let MIOperandInfo = (ops tGPR:$base, i32imm:$offsimm, tGPR:$offsreg);
106 let ParserMatchClass = MemModeThumbAsmOperand;
109 // t_addrmode_s2 := reg + reg
112 def t_addrmode_s2 : Operand<i32>,
113 ComplexPattern<i32, 3, "SelectThumbAddrModeS2", []> {
114 let EncoderMethod = "getAddrModeS2OpValue";
115 let PrintMethod = "printThumbAddrModeS2Operand";
116 let MIOperandInfo = (ops tGPR:$base, i32imm:$offsimm, tGPR:$offsreg);
117 let ParserMatchClass = MemModeThumbAsmOperand;
120 // t_addrmode_s1 := reg + reg
123 def t_addrmode_s1 : Operand<i32>,
124 ComplexPattern<i32, 3, "SelectThumbAddrModeS1", []> {
125 let EncoderMethod = "getAddrModeS1OpValue";
126 let PrintMethod = "printThumbAddrModeS1Operand";
127 let MIOperandInfo = (ops tGPR:$base, i32imm:$offsimm, tGPR:$offsreg);
128 let ParserMatchClass = MemModeThumbAsmOperand;
131 // t_addrmode_sp := sp + imm8 * 4
133 def t_addrmode_sp : Operand<i32>,
134 ComplexPattern<i32, 2, "SelectThumbAddrModeSP", []> {
135 let EncoderMethod = "getAddrModeThumbSPOpValue";
136 let PrintMethod = "printThumbAddrModeSPOperand";
137 let MIOperandInfo = (ops GPR:$base, i32imm:$offsimm);
138 let ParserMatchClass = MemModeThumbAsmOperand;
141 // t_addrmode_pc := <label> => pc + imm8 * 4
143 def t_addrmode_pc : Operand<i32> {
144 let EncoderMethod = "getAddrModePCOpValue";
145 let ParserMatchClass = MemModeThumbAsmOperand;
148 //===----------------------------------------------------------------------===//
149 // Miscellaneous Instructions.
152 // FIXME: Marking these as hasSideEffects is necessary to prevent machine DCE
153 // from removing one half of the matched pairs. That breaks PEI, which assumes
154 // these will always be in pairs, and asserts if it finds otherwise. Better way?
155 let Defs = [SP], Uses = [SP], hasSideEffects = 1 in {
156 def tADJCALLSTACKUP :
157 PseudoInst<(outs), (ins i32imm:$amt1, i32imm:$amt2), NoItinerary,
158 [(ARMcallseq_end imm:$amt1, imm:$amt2)]>,
159 Requires<[IsThumb, IsThumb1Only]>;
161 def tADJCALLSTACKDOWN :
162 PseudoInst<(outs), (ins i32imm:$amt), NoItinerary,
163 [(ARMcallseq_start imm:$amt)]>,
164 Requires<[IsThumb, IsThumb1Only]>;
167 // T1Disassembly - A simple class to make encoding some disassembly patterns
168 // easier and less verbose.
169 class T1Disassembly<bits<2> op1, bits<8> op2>
170 : T1Encoding<0b101111> {
175 def tNOP : T1pI<(outs), (ins), NoItinerary, "nop", "",
176 [/* For disassembly only; pattern left blank */]>,
177 T1Disassembly<0b11, 0x00>; // A8.6.110
179 def tYIELD : T1pI<(outs), (ins), NoItinerary, "yield", "",
180 [/* For disassembly only; pattern left blank */]>,
181 T1Disassembly<0b11, 0x10>; // A8.6.410
183 def tWFE : T1pI<(outs), (ins), NoItinerary, "wfe", "",
184 [/* For disassembly only; pattern left blank */]>,
185 T1Disassembly<0b11, 0x20>; // A8.6.408
187 def tWFI : T1pI<(outs), (ins), NoItinerary, "wfi", "",
188 [/* For disassembly only; pattern left blank */]>,
189 T1Disassembly<0b11, 0x30>; // A8.6.409
191 def tSEV : T1pI<(outs), (ins), NoItinerary, "sev", "",
192 [/* For disassembly only; pattern left blank */]>,
193 T1Disassembly<0b11, 0x40>; // A8.6.157
195 // The i32imm operand $val can be used by a debugger to store more information
196 // about the breakpoint.
197 def tBKPT : T1I<(outs), (ins i32imm:$val), NoItinerary, "bkpt\t$val",
198 [/* For disassembly only; pattern left blank */]>,
199 T1Disassembly<0b10, {?,?,?,?,?,?,?,?}> {
205 def tSETENDBE : T1I<(outs), (ins), NoItinerary, "setend\tbe",
206 [/* For disassembly only; pattern left blank */]>,
207 T1Encoding<0b101101> {
209 let Inst{9-5} = 0b10010;
211 let Inst{3} = 1; // Big-Endian
212 let Inst{2-0} = 0b000;
215 def tSETENDLE : T1I<(outs), (ins), NoItinerary, "setend\tle",
216 [/* For disassembly only; pattern left blank */]>,
217 T1Encoding<0b101101> {
219 let Inst{9-5} = 0b10010;
221 let Inst{3} = 0; // Little-Endian
222 let Inst{2-0} = 0b000;
225 // Change Processor State is a system instruction -- for disassembly only.
226 // The singleton $opt operand contains the following information:
228 // opt{4-0} = mode ==> don't care
229 // opt{5} = changemode ==> 0 (false for 16-bit Thumb instr)
230 // opt{8-6} = AIF from Inst{2-0}
231 // opt{10-9} = 1:imod from Inst{4} with 0b10 as enable and 0b11 as disable
233 // The opt{4-0} and opt{5} sub-fields are to accommodate 32-bit Thumb and ARM
234 // CPS which has more options.
235 def tCPS : T1I<(outs), (ins cps_opt:$opt), NoItinerary, "cps$opt",
236 [/* For disassembly only; pattern left blank */]>,
240 // FIXME: Finish encoding.
243 // For both thumb1 and thumb2.
244 let isNotDuplicable = 1, isCodeGenOnly = 1 in
245 def tPICADD : TIt<(outs GPR:$dst), (ins GPR:$lhs, pclabel:$cp), IIC_iALUr, "",
246 [(set GPR:$dst, (ARMpic_add GPR:$lhs, imm:$cp))]>,
247 T1Special<{0,0,?,?}> {
250 let Inst{6-3} = 0b1111; // Rm = pc
254 // PC relative add (ADR).
255 def tADDrPCi : T1I<(outs tGPR:$dst), (ins t_imm_s4:$rhs), IIC_iALUi,
256 "add\t$dst, pc, $rhs", []>,
257 T1Encoding<{1,0,1,0,0,?}> {
261 let Inst{10-8} = dst;
265 // ADD <Rd>, sp, #<imm8>
266 // This is rematerializable, which is particularly useful for taking the
267 // address of locals.
268 let isReMaterializable = 1 in
269 def tADDrSPi : T1I<(outs tGPR:$dst), (ins GPR:$sp, t_imm_s4:$rhs), IIC_iALUi,
270 "add\t$dst, $sp, $rhs", []>,
271 T1Encoding<{1,0,1,0,1,?}> {
275 let Inst{10-8} = dst;
279 // ADD sp, sp, #<imm7>
280 def tADDspi : TIt<(outs GPR:$dst), (ins GPR:$lhs, t_imm_s4:$rhs), IIC_iALUi,
281 "add\t$dst, $rhs", []>,
282 T1Misc<{0,0,0,0,0,?,?}> {
288 // SUB sp, sp, #<imm7>
289 // FIXME: The encoding and the ASM string don't match up.
290 def tSUBspi : TIt<(outs GPR:$dst), (ins GPR:$lhs, t_imm_s4:$rhs), IIC_iALUi,
291 "sub\t$dst, $rhs", []>,
292 T1Misc<{0,0,0,0,1,?,?}> {
299 def tADDrSP : TIt<(outs GPR:$dst), (ins GPR:$lhs, GPR:$rhs), IIC_iALUr,
300 "add\t$dst, $rhs", []>,
301 T1Special<{0,0,?,?}> {
302 // A8.6.9 Encoding T1
304 let Inst{7} = dst{3};
305 let Inst{6-3} = 0b1101;
306 let Inst{2-0} = dst{2-0};
310 def tADDspr : TIt<(outs GPR:$dst), (ins GPR:$lhs, GPR:$rhs), IIC_iALUr,
311 "add\t$dst, $rhs", []>,
312 T1Special<{0,0,?,?}> {
313 // A8.6.9 Encoding T2
317 let Inst{2-0} = 0b101;
320 //===----------------------------------------------------------------------===//
321 // Control Flow Instructions.
324 let isReturn = 1, isTerminator = 1, isBarrier = 1 in {
325 def tBX_RET : TI<(outs), (ins), IIC_Br, "bx\tlr",
327 T1Special<{1,1,0,?}> {
329 let Inst{6-3} = 0b1110; // Rm = lr
330 let Inst{2-0} = 0b000;
333 // Alternative return instruction used by vararg functions.
334 def tBX_RET_vararg : TI<(outs), (ins tGPR:$Rm),
337 T1Special<{1,1,0,?}> {
341 let Inst{2-0} = 0b000;
346 let isBranch = 1, isTerminator = 1, isBarrier = 1, isIndirectBranch = 1 in {
347 def tBRIND : TI<(outs), (ins GPR:$Rm),
351 T1Special<{1,0,?,?}> {
354 let Inst{7} = 1; // <Rd> = Inst{7:2-0} = pc
356 let Inst{2-0} = 0b111;
360 // FIXME: remove when we have a way to marking a MI with these properties.
361 let isReturn = 1, isTerminator = 1, isBarrier = 1, mayLoad = 1,
362 hasExtraDefRegAllocReq = 1 in
363 def tPOP_RET : T1I<(outs), (ins pred:$p, reglist:$regs, variable_ops),
365 "pop${p}\t$regs", []>,
366 T1Misc<{1,1,0,?,?,?,?}> {
369 let Inst{8} = regs{15}; // registers = P:'0000000':register_list
370 let Inst{7-0} = regs{7-0};
373 // All calls clobber the non-callee saved registers. SP is marked as a use to
374 // prevent stack-pointer assignments that appear immediately before calls from
375 // potentially appearing dead.
377 // On non-Darwin platforms R9 is callee-saved.
378 Defs = [R0, R1, R2, R3, R12, LR,
379 D0, D1, D2, D3, D4, D5, D6, D7,
380 D16, D17, D18, D19, D20, D21, D22, D23,
381 D24, D25, D26, D27, D28, D29, D30, D31, CPSR, FPSCR],
383 // Also used for Thumb2
384 def tBL : TIx2<0b11110, 0b11, 1,
385 (outs), (ins t_bltarget:$func, variable_ops), IIC_Br,
387 [(ARMtcall tglobaladdr:$func)]>,
388 Requires<[IsThumb, IsNotDarwin]> {
390 let Inst{25-16} = func{20-11};
393 let Inst{10-0} = func{10-0};
396 // ARMv5T and above, also used for Thumb2
397 def tBLXi : TIx2<0b11110, 0b11, 0,
398 (outs), (ins t_bltarget:$func, variable_ops), IIC_Br,
400 [(ARMcall tglobaladdr:$func)]>,
401 Requires<[IsThumb, HasV5T, IsNotDarwin]> {
403 let Inst{25-16} = func{20-11};
406 let Inst{10-1} = func{10-1};
407 let Inst{0} = 0; // func{0} is assumed zero
410 // Also used for Thumb2
411 def tBLXr : TI<(outs), (ins GPR:$func, variable_ops), IIC_Br,
413 [(ARMtcall GPR:$func)]>,
414 Requires<[IsThumb, HasV5T, IsNotDarwin]>,
415 T1Special<{1,1,1,?}>; // A6.2.3 & A8.6.24;
418 // FIXME: Should be a pseudo.
419 let isCodeGenOnly = 1 in
420 def tBX : TIx2<{?,?,?,?,?}, {?,?}, ?,
421 (outs), (ins tGPR:$func, variable_ops), IIC_Br,
422 "mov\tlr, pc\n\tbx\t$func",
423 [(ARMcall_nolink tGPR:$func)]>,
424 Requires<[IsThumb, IsThumb1Only, IsNotDarwin]>;
428 // On Darwin R9 is call-clobbered.
429 // R7 is marked as a use to prevent frame-pointer assignments from being
430 // moved above / below calls.
431 Defs = [R0, R1, R2, R3, R9, R12, LR,
432 D0, D1, D2, D3, D4, D5, D6, D7,
433 D16, D17, D18, D19, D20, D21, D22, D23,
434 D24, D25, D26, D27, D28, D29, D30, D31, CPSR, FPSCR],
436 // Also used for Thumb2
437 def tBLr9 : TIx2<0b11110, 0b11, 1,
438 (outs), (ins pred:$p, t_bltarget:$func, variable_ops),
439 IIC_Br, "bl${p}\t$func",
440 [(ARMtcall tglobaladdr:$func)]>,
441 Requires<[IsThumb, IsDarwin]> {
443 let Inst{25-16} = func{20-11};
446 let Inst{10-0} = func{10-0};
449 // ARMv5T and above, also used for Thumb2
450 def tBLXi_r9 : TIx2<0b11110, 0b11, 0,
451 (outs), (ins pred:$p, t_bltarget:$func, variable_ops),
452 IIC_Br, "blx${p}\t$func",
453 [(ARMcall tglobaladdr:$func)]>,
454 Requires<[IsThumb, HasV5T, IsDarwin]> {
456 let Inst{25-16} = func{20-11};
459 let Inst{10-1} = func{10-1};
460 let Inst{0} = 0; // func{0} is assumed zero
463 // Also used for Thumb2
464 def tBLXr_r9 : TI<(outs), (ins pred:$p, GPR:$func, variable_ops), IIC_Br,
466 [(ARMtcall GPR:$func)]>,
467 Requires<[IsThumb, HasV5T, IsDarwin]>,
468 T1Special<{1,1,1,?}> {
471 let Inst{6-3} = func;
472 let Inst{2-0} = 0b000;
476 let isCodeGenOnly = 1 in
477 // FIXME: Should be a pseudo.
478 def tBXr9 : TIx2<{?,?,?,?,?}, {?,?}, ?,
479 (outs), (ins tGPR:$func, variable_ops), IIC_Br,
480 "mov\tlr, pc\n\tbx\t$func",
481 [(ARMcall_nolink tGPR:$func)]>,
482 Requires<[IsThumb, IsThumb1Only, IsDarwin]>;
485 let isBranch = 1, isTerminator = 1, isBarrier = 1 in {
486 let isPredicable = 1 in
487 def tB : T1I<(outs), (ins brtarget:$target), IIC_Br,
488 "b\t$target", [(br bb:$target)]>,
489 T1Encoding<{1,1,1,0,0,?}>;
493 def tBfar : TIx2<0b11110, 0b11, 1, (outs), (ins brtarget:$target), IIC_Br,
496 def tBR_JTr : tPseudoInst<(outs),
497 (ins tGPR:$target, i32imm:$jt, i32imm:$id),
499 [(ARMbrjt tGPR:$target, tjumptable:$jt, imm:$id)]> {
500 list<Predicate> Predicates = [IsThumb, IsThumb1Only];
504 // FIXME: should be able to write a pattern for ARMBrcond, but can't use
505 // a two-value operand where a dag node expects two operands. :(
506 let isBranch = 1, isTerminator = 1 in
507 def tBcc : T1I<(outs), (ins brtarget:$target, pred:$p), IIC_Br,
509 [/*(ARMbrcond bb:$target, imm:$cc)*/]>,
510 T1Encoding<{1,1,0,1,?,?}> {
515 // Compare and branch on zero / non-zero
516 let isBranch = 1, isTerminator = 1 in {
517 def tCBZ : T1I<(outs), (ins tGPR:$Rn, t_brtarget:$target), IIC_Br,
518 "cbz\t$Rn, $target", []>,
519 T1Misc<{0,0,?,1,?,?,?}> {
523 let Inst{9} = target{5};
524 let Inst{7-3} = target{4-0};
528 def tCBNZ : T1I<(outs), (ins tGPR:$cmp, t_brtarget:$target), IIC_Br,
529 "cbnz\t$cmp, $target", []>,
530 T1Misc<{1,0,?,1,?,?,?}> {
534 let Inst{9} = target{5};
535 let Inst{7-3} = target{4-0};
540 // A8.6.218 Supervisor Call (Software Interrupt) -- for disassembly only
541 // A8.6.16 B: Encoding T1
542 // If Inst{11-8} == 0b1111 then SEE SVC
543 let isCall = 1, Uses = [SP] in
544 def tSVC : T1pI<(outs), (ins i32imm:$imm), IIC_Br,
545 "svc", "\t$imm", []>, Encoding16 {
547 let Inst{15-12} = 0b1101;
548 let Inst{11-8} = 0b1111;
552 // The assembler uses 0xDEFE for a trap instruction.
553 let isBarrier = 1, isTerminator = 1 in
554 def tTRAP : TI<(outs), (ins), IIC_Br,
555 "trap", [(trap)]>, Encoding16 {
559 //===----------------------------------------------------------------------===//
560 // Load Store Instructions.
563 let canFoldAsLoad = 1, isReMaterializable = 1 in
564 def tLDR : // A8.6.60
565 T1pILdStEncode<0b100, (outs tGPR:$Rt), (ins t_addrmode_s4:$addr),
566 AddrModeT1_4, IIC_iLoad_r,
567 "ldr", "\t$Rt, $addr",
568 [(set tGPR:$Rt, (load t_addrmode_s4:$addr))]>;
570 def tLDRi : // A8.6.57
571 T1pILdStEncodeImm<0b0110, 1, (outs tGPR:$Rt), (ins t_addrmode_s4:$addr),
572 AddrModeT1_4, IIC_iLoad_r,
573 "ldr", "\t$Rt, $addr",
576 def tLDRB : // A8.6.64
577 T1pILdStEncode<0b110, (outs tGPR:$Rt), (ins t_addrmode_s1:$addr),
578 AddrModeT1_1, IIC_iLoad_bh_r,
579 "ldrb", "\t$Rt, $addr",
580 [(set tGPR:$Rt, (zextloadi8 t_addrmode_s1:$addr))]>;
582 def tLDRBi : // A8.6.61
583 T1pILdStEncodeImm<0b0111, 1, (outs tGPR:$Rt), (ins t_addrmode_s1:$addr),
584 AddrModeT1_1, IIC_iLoad_bh_r,
585 "ldrb", "\t$Rt, $addr",
588 def tLDRH : // A8.6.76
589 T1pILdStEncode<0b101, (outs tGPR:$dst), (ins t_addrmode_s2:$addr),
590 AddrModeT1_2, IIC_iLoad_bh_r,
591 "ldrh", "\t$dst, $addr",
592 [(set tGPR:$dst, (zextloadi16 t_addrmode_s2:$addr))]>;
594 def tLDRHi : // A8.6.73
595 T1pILdStEncodeImm<0b1000, 1, (outs tGPR:$Rt), (ins t_addrmode_s2:$addr),
596 AddrModeT1_2, IIC_iLoad_bh_r,
597 "ldrh", "\t$Rt, $addr",
600 let AddedComplexity = 10 in
601 def tLDRSB : // A8.6.80
602 T1pILdStEncode<0b011, (outs tGPR:$dst), (ins t_addrmode_rr:$addr),
603 AddrModeT1_1, IIC_iLoad_bh_r,
604 "ldrsb", "\t$dst, $addr",
605 [(set tGPR:$dst, (sextloadi8 t_addrmode_rr:$addr))]>;
607 let AddedComplexity = 10 in
608 def tLDRSH : // A8.6.84
609 T1pILdStEncode<0b111, (outs tGPR:$dst), (ins t_addrmode_rr:$addr),
610 AddrModeT1_2, IIC_iLoad_bh_r,
611 "ldrsh", "\t$dst, $addr",
612 [(set tGPR:$dst, (sextloadi16 t_addrmode_rr:$addr))]>;
614 let canFoldAsLoad = 1 in
615 def tLDRspi : T1pIs<(outs tGPR:$Rt), (ins t_addrmode_sp:$addr), IIC_iLoad_i,
616 "ldr", "\t$Rt, $addr",
617 [(set tGPR:$Rt, (load t_addrmode_sp:$addr))]>,
622 let Inst{7-0} = addr;
625 // Special instruction for restore. It cannot clobber condition register
626 // when it's expanded by eliminateCallFramePseudoInstr().
627 let canFoldAsLoad = 1, mayLoad = 1, neverHasSideEffects = 1 in
628 // FIXME: Pseudo for tLDRspi
629 def tRestore : T1pIs<(outs tGPR:$dst), (ins t_addrmode_sp:$addr), IIC_iLoad_i,
630 "ldr", "\t$dst, $addr", []>,
634 // FIXME: Use ldr.n to work around a Darwin assembler bug.
635 let canFoldAsLoad = 1, isReMaterializable = 1 in
636 def tLDRpci : T1pIs<(outs tGPR:$Rt), (ins t_addrmode_pc:$addr), IIC_iLoad_i,
637 "ldr", ".n\t$Rt, $addr",
638 [(set tGPR:$Rt, (load (ARMWrapper tconstpool:$addr)))]>,
639 T1Encoding<{0,1,0,0,1,?}> {
644 let Inst{7-0} = addr;
647 // Special LDR for loads from non-pc-relative constpools.
648 let canFoldAsLoad = 1, mayLoad = 1, neverHasSideEffects = 1,
649 isReMaterializable = 1 in
650 def tLDRcp : T1pIs<(outs tGPR:$Rt), (ins i32imm:$addr), IIC_iLoad_i,
651 "ldr", "\t$Rt, $addr", []>,
657 let Inst{7-0} = addr;
660 def tSTR : // A8.6.194
661 T1pILdStEncode<0b000, (outs), (ins tGPR:$src, t_addrmode_s4:$addr),
662 AddrModeT1_4, IIC_iStore_r,
663 "str", "\t$src, $addr",
664 [(store tGPR:$src, t_addrmode_s4:$addr)]>;
666 def tSTRi : // A8.6.192
667 T1pILdStEncodeImm<0b0110, 0, (outs), (ins tGPR:$Rt, t_addrmode_s4:$addr),
668 AddrModeT1_4, IIC_iStore_r,
669 "str", "\t$Rt, $addr",
672 def tSTRB : // A8.6.197
673 T1pILdStEncode<0b010, (outs), (ins tGPR:$src, t_addrmode_s1:$addr),
674 AddrModeT1_1, IIC_iStore_bh_r,
675 "strb", "\t$src, $addr",
676 [(truncstorei8 tGPR:$src, t_addrmode_s1:$addr)]>;
678 def tSTRBi : // A8.6.195
679 T1pILdStEncodeImm<0b0111, 0, (outs), (ins tGPR:$Rt, t_addrmode_s1:$addr),
680 AddrModeT1_1, IIC_iStore_bh_r,
681 "strb", "\t$Rt, $addr",
684 def tSTRH : // A8.6.207
685 T1pILdStEncode<0b001, (outs), (ins tGPR:$src, t_addrmode_s2:$addr),
686 AddrModeT1_2, IIC_iStore_bh_r,
687 "strh", "\t$src, $addr",
688 [(truncstorei16 tGPR:$src, t_addrmode_s2:$addr)]>;
690 def tSTRHi : // A8.6.205
691 T1pILdStEncodeImm<0b1000, 0, (outs), (ins tGPR:$Rt, t_addrmode_s2:$addr),
692 AddrModeT1_2, IIC_iStore_bh_r,
693 "strh", "\t$Rt, $addr",
696 def tSTRspi : T1pIs<(outs), (ins tGPR:$Rt, t_addrmode_sp:$addr), IIC_iStore_i,
697 "str", "\t$Rt, $addr",
698 [(store tGPR:$Rt, t_addrmode_sp:$addr)]>,
703 let Inst{7-0} = addr;
706 let mayStore = 1, neverHasSideEffects = 1 in
707 // Special instruction for spill. It cannot clobber condition register when it's
708 // expanded by eliminateCallFramePseudoInstr().
709 // FIXME: Pseudo for tSTRspi
710 def tSpill : T1pIs<(outs), (ins tGPR:$src, t_addrmode_sp:$addr), IIC_iStore_i,
711 "str", "\t$src, $addr", []>,
714 //===----------------------------------------------------------------------===//
715 // Load / store multiple Instructions.
718 multiclass thumb_ldst_mult<string asm, InstrItinClass itin,
719 InstrItinClass itin_upd, bits<6> T1Enc,
722 T1I<(outs), (ins GPR:$Rn, pred:$p, reglist:$regs, variable_ops),
723 itin, !strconcat(asm, "ia${p}\t$Rn, $regs"), []>,
728 let Inst{7-0} = regs;
731 T1It<(outs GPR:$wb), (ins GPR:$Rn, pred:$p, reglist:$regs, variable_ops),
732 itin_upd, !strconcat(asm, "ia${p}\t$Rn!, $regs"), "$Rn = $wb", []>,
737 let Inst{7-0} = regs;
741 // These require base address to be written back or one of the loaded regs.
742 let neverHasSideEffects = 1 in {
744 let mayLoad = 1, hasExtraDefRegAllocReq = 1 in
745 defm tLDM : thumb_ldst_mult<"ldm", IIC_iLoad_m, IIC_iLoad_mu,
748 let mayStore = 1, hasExtraSrcRegAllocReq = 1 in
749 defm tSTM : thumb_ldst_mult<"stm", IIC_iStore_m, IIC_iStore_mu,
752 } // neverHasSideEffects
754 let mayLoad = 1, Uses = [SP], Defs = [SP], hasExtraDefRegAllocReq = 1 in
755 def tPOP : T1I<(outs), (ins pred:$p, reglist:$regs, variable_ops),
757 "pop${p}\t$regs", []>,
758 T1Misc<{1,1,0,?,?,?,?}> {
760 let Inst{8} = regs{15};
761 let Inst{7-0} = regs{7-0};
764 let mayStore = 1, Uses = [SP], Defs = [SP], hasExtraSrcRegAllocReq = 1 in
765 def tPUSH : T1I<(outs), (ins pred:$p, reglist:$regs, variable_ops),
767 "push${p}\t$regs", []>,
768 T1Misc<{0,1,0,?,?,?,?}> {
770 let Inst{8} = regs{14};
771 let Inst{7-0} = regs{7-0};
774 //===----------------------------------------------------------------------===//
775 // Arithmetic Instructions.
778 // Helper classes for encoding T1pI patterns:
779 class T1pIDPEncode<bits<4> opA, dag oops, dag iops, InstrItinClass itin,
780 string opc, string asm, list<dag> pattern>
781 : T1pI<oops, iops, itin, opc, asm, pattern>,
782 T1DataProcessing<opA> {
788 class T1pIMiscEncode<bits<7> opA, dag oops, dag iops, InstrItinClass itin,
789 string opc, string asm, list<dag> pattern>
790 : T1pI<oops, iops, itin, opc, asm, pattern>,
798 // Helper classes for encoding T1sI patterns:
799 class T1sIDPEncode<bits<4> opA, dag oops, dag iops, InstrItinClass itin,
800 string opc, string asm, list<dag> pattern>
801 : T1sI<oops, iops, itin, opc, asm, pattern>,
802 T1DataProcessing<opA> {
808 class T1sIGenEncode<bits<5> opA, dag oops, dag iops, InstrItinClass itin,
809 string opc, string asm, list<dag> pattern>
810 : T1sI<oops, iops, itin, opc, asm, pattern>,
819 class T1sIGenEncodeImm<bits<5> opA, dag oops, dag iops, InstrItinClass itin,
820 string opc, string asm, list<dag> pattern>
821 : T1sI<oops, iops, itin, opc, asm, pattern>,
829 // Helper classes for encoding T1sIt patterns:
830 class T1sItDPEncode<bits<4> opA, dag oops, dag iops, InstrItinClass itin,
831 string opc, string asm, list<dag> pattern>
832 : T1sIt<oops, iops, itin, opc, asm, pattern>,
833 T1DataProcessing<opA> {
839 class T1sItGenEncodeImm<bits<5> opA, dag oops, dag iops, InstrItinClass itin,
840 string opc, string asm, list<dag> pattern>
841 : T1sIt<oops, iops, itin, opc, asm, pattern>,
845 let Inst{10-8} = Rdn;
846 let Inst{7-0} = imm8;
849 // Add with carry register
850 let isCommutable = 1, Uses = [CPSR] in
852 T1sItDPEncode<0b0101, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm), IIC_iALUr,
853 "adc", "\t$Rdn, $Rm",
854 [(set tGPR:$Rdn, (adde tGPR:$Rn, tGPR:$Rm))]>;
857 def tADDi3 : // A8.6.4 T1
858 T1sIGenEncodeImm<0b01110, (outs tGPR:$Rd), (ins tGPR:$Rm, i32imm:$imm3), IIC_iALUi,
859 "add", "\t$Rd, $Rm, $imm3",
860 [(set tGPR:$Rd, (add tGPR:$Rm, imm0_7:$imm3))]> {
862 let Inst{8-6} = imm3;
865 def tADDi8 : // A8.6.4 T2
866 T1sItGenEncodeImm<{1,1,0,?,?}, (outs tGPR:$Rdn), (ins tGPR:$Rn, i32imm:$imm8),
868 "add", "\t$Rdn, $imm8",
869 [(set tGPR:$Rdn, (add tGPR:$Rn, imm8_255:$imm8))]>;
872 let isCommutable = 1 in
873 def tADDrr : // A8.6.6 T1
874 T1sIGenEncode<0b01100, (outs tGPR:$Rd), (ins tGPR:$Rn, tGPR:$Rm),
876 "add", "\t$Rd, $Rn, $Rm",
877 [(set tGPR:$Rd, (add tGPR:$Rn, tGPR:$Rm))]>;
879 let neverHasSideEffects = 1 in
880 def tADDhirr : T1pIt<(outs GPR:$Rdn), (ins GPR:$Rn, GPR:$Rm), IIC_iALUr,
881 "add", "\t$Rdn, $Rm", []>,
882 T1Special<{0,0,?,?}> {
886 let Inst{7} = Rdn{3};
888 let Inst{2-0} = Rdn{2-0};
892 let isCommutable = 1 in
893 def tAND : // A8.6.12
894 T1sItDPEncode<0b0000, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
896 "and", "\t$Rdn, $Rm",
897 [(set tGPR:$Rdn, (and tGPR:$Rn, tGPR:$Rm))]>;
900 def tASRri : // A8.6.14
901 T1sIGenEncodeImm<{0,1,0,?,?}, (outs tGPR:$Rd), (ins tGPR:$Rm, i32imm:$imm5),
903 "asr", "\t$Rd, $Rm, $imm5",
904 [(set tGPR:$Rd, (sra tGPR:$Rm, (i32 imm:$imm5)))]> {
906 let Inst{10-6} = imm5;
910 def tASRrr : // A8.6.15
911 T1sItDPEncode<0b0100, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
913 "asr", "\t$Rdn, $Rm",
914 [(set tGPR:$Rdn, (sra tGPR:$Rn, tGPR:$Rm))]>;
917 def tBIC : // A8.6.20
918 T1sItDPEncode<0b1110, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
920 "bic", "\t$Rdn, $Rm",
921 [(set tGPR:$Rdn, (and tGPR:$Rn, (not tGPR:$Rm)))]>;
924 let isCompare = 1, Defs = [CPSR] in {
925 //FIXME: Disable CMN, as CCodes are backwards from compare expectations
926 // Compare-to-zero still works out, just not the relationals
927 //def tCMN : // A8.6.33
928 // T1pIDPEncode<0b1011, (outs), (ins tGPR:$lhs, tGPR:$rhs),
930 // "cmn", "\t$lhs, $rhs",
931 // [(ARMcmp tGPR:$lhs, (ineg tGPR:$rhs))]>;
933 def tCMNz : // A8.6.33
934 T1pIDPEncode<0b1011, (outs), (ins tGPR:$Rn, tGPR:$Rm),
937 [(ARMcmpZ tGPR:$Rn, (ineg tGPR:$Rm))]>;
939 } // isCompare = 1, Defs = [CPSR]
942 let isCompare = 1, Defs = [CPSR] in {
943 def tCMPi8 : T1pI<(outs), (ins tGPR:$Rn, i32imm:$imm8), IIC_iCMPi,
944 "cmp", "\t$Rn, $imm8",
945 [(ARMcmp tGPR:$Rn, imm0_255:$imm8)]>,
946 T1General<{1,0,1,?,?}> {
951 let Inst{7-0} = imm8;
955 def tCMPr : // A8.6.36 T1
956 T1pIDPEncode<0b1010, (outs), (ins tGPR:$Rn, tGPR:$Rm),
959 [(ARMcmp tGPR:$Rn, tGPR:$Rm)]>;
961 def tCMPhir : T1pI<(outs), (ins GPR:$Rn, GPR:$Rm), IIC_iCMPr,
962 "cmp", "\t$Rn, $Rm", []>,
963 T1Special<{0,1,?,?}> {
969 let Inst{2-0} = Rn{2-0};
971 } // isCompare = 1, Defs = [CPSR]
975 let isCommutable = 1 in
976 def tEOR : // A8.6.45
977 T1sItDPEncode<0b0001, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
979 "eor", "\t$Rdn, $Rm",
980 [(set tGPR:$Rdn, (xor tGPR:$Rn, tGPR:$Rm))]>;
983 def tLSLri : // A8.6.88
984 T1sIGenEncodeImm<{0,0,0,?,?}, (outs tGPR:$Rd), (ins tGPR:$Rm, i32imm:$imm5),
986 "lsl", "\t$Rd, $Rm, $imm5",
987 [(set tGPR:$Rd, (shl tGPR:$Rm, (i32 imm:$imm5)))]> {
989 let Inst{10-6} = imm5;
993 def tLSLrr : // A8.6.89
994 T1sItDPEncode<0b0010, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
996 "lsl", "\t$Rdn, $Rm",
997 [(set tGPR:$Rdn, (shl tGPR:$Rn, tGPR:$Rm))]>;
1000 def tLSRri : // A8.6.90
1001 T1sIGenEncodeImm<{0,0,1,?,?}, (outs tGPR:$Rd), (ins tGPR:$Rm, i32imm:$imm5),
1003 "lsr", "\t$Rd, $Rm, $imm5",
1004 [(set tGPR:$Rd, (srl tGPR:$Rm, (i32 imm:$imm5)))]> {
1006 let Inst{10-6} = imm5;
1010 def tLSRrr : // A8.6.91
1011 T1sItDPEncode<0b0011, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
1013 "lsr", "\t$Rdn, $Rm",
1014 [(set tGPR:$Rdn, (srl tGPR:$Rn, tGPR:$Rm))]>;
1017 let isMoveImm = 1 in
1018 def tMOVi8 : T1sI<(outs tGPR:$Rd), (ins i32imm:$imm8), IIC_iMOVi,
1019 "mov", "\t$Rd, $imm8",
1020 [(set tGPR:$Rd, imm0_255:$imm8)]>,
1021 T1General<{1,0,0,?,?}> {
1025 let Inst{10-8} = Rd;
1026 let Inst{7-0} = imm8;
1029 // TODO: A7-73: MOV(2) - mov setting flag.
1031 let neverHasSideEffects = 1 in {
1032 // FIXME: Make this predicable.
1033 def tMOVr : T1I<(outs tGPR:$Rd), (ins tGPR:$Rm), IIC_iMOVr,
1034 "mov\t$Rd, $Rm", []>,
1039 // Bits {7-6} are encoded by the T1Special value.
1040 let Inst{5-3} = Rm{2-0};
1041 let Inst{2-0} = Rd{2-0};
1043 let Defs = [CPSR] in
1044 def tMOVSr : T1I<(outs tGPR:$Rd), (ins tGPR:$Rm), IIC_iMOVr,
1045 "movs\t$Rd, $Rm", []>, Encoding16 {
1049 let Inst{15-6} = 0b0000000000;
1054 // FIXME: Make these predicable.
1055 def tMOVgpr2tgpr : T1I<(outs tGPR:$Rd), (ins GPR:$Rm), IIC_iMOVr,
1056 "mov\t$Rd, $Rm", []>,
1057 T1Special<{1,0,0,?}> {
1061 // Bit {7} is encoded by the T1Special value.
1063 let Inst{2-0} = Rd{2-0};
1065 def tMOVtgpr2gpr : T1I<(outs GPR:$Rd), (ins tGPR:$Rm), IIC_iMOVr,
1066 "mov\t$Rd, $Rm", []>,
1067 T1Special<{1,0,?,0}> {
1071 // Bit {6} is encoded by the T1Special value.
1072 let Inst{7} = Rd{3};
1073 let Inst{5-3} = Rm{2-0};
1074 let Inst{2-0} = Rd{2-0};
1076 def tMOVgpr2gpr : T1I<(outs GPR:$Rd), (ins GPR:$Rm), IIC_iMOVr,
1077 "mov\t$Rd, $Rm", []>,
1078 T1Special<{1,0,?,?}> {
1082 let Inst{7} = Rd{3};
1084 let Inst{2-0} = Rd{2-0};
1086 } // neverHasSideEffects
1088 // Multiply register
1089 let isCommutable = 1 in
1090 def tMUL : // A8.6.105 T1
1091 T1sItDPEncode<0b1101, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
1093 "mul", "\t$Rdn, $Rm, $Rdn",
1094 [(set tGPR:$Rdn, (mul tGPR:$Rn, tGPR:$Rm))]>;
1096 // Move inverse register
1097 def tMVN : // A8.6.107
1098 T1sIDPEncode<0b1111, (outs tGPR:$Rd), (ins tGPR:$Rn), IIC_iMVNr,
1099 "mvn", "\t$Rd, $Rn",
1100 [(set tGPR:$Rd, (not tGPR:$Rn))]>;
1102 // Bitwise or register
1103 let isCommutable = 1 in
1104 def tORR : // A8.6.114
1105 T1sItDPEncode<0b1100, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
1107 "orr", "\t$Rdn, $Rm",
1108 [(set tGPR:$Rdn, (or tGPR:$Rn, tGPR:$Rm))]>;
1111 def tREV : // A8.6.134
1112 T1pIMiscEncode<{1,0,1,0,0,0,?}, (outs tGPR:$Rd), (ins tGPR:$Rm),
1114 "rev", "\t$Rd, $Rm",
1115 [(set tGPR:$Rd, (bswap tGPR:$Rm))]>,
1116 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1118 def tREV16 : // A8.6.135
1119 T1pIMiscEncode<{1,0,1,0,0,1,?}, (outs tGPR:$Rd), (ins tGPR:$Rm),
1121 "rev16", "\t$Rd, $Rm",
1123 (or (and (srl tGPR:$Rm, (i32 8)), 0xFF),
1124 (or (and (shl tGPR:$Rm, (i32 8)), 0xFF00),
1125 (or (and (srl tGPR:$Rm, (i32 8)), 0xFF0000),
1126 (and (shl tGPR:$Rm, (i32 8)), 0xFF000000)))))]>,
1127 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1129 def tREVSH : // A8.6.136
1130 T1pIMiscEncode<{1,0,1,0,1,1,?}, (outs tGPR:$Rd), (ins tGPR:$Rm),
1132 "revsh", "\t$Rd, $Rm",
1135 (or (srl (and tGPR:$Rm, 0xFF00), (i32 8)),
1136 (shl tGPR:$Rm, (i32 8))), i16))]>,
1137 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1139 // Rotate right register
1140 def tROR : // A8.6.139
1141 T1sItDPEncode<0b0111, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
1143 "ror", "\t$Rdn, $Rm",
1144 [(set tGPR:$Rdn, (rotr tGPR:$Rn, tGPR:$Rm))]>;
1147 def tRSB : // A8.6.141
1148 T1sIDPEncode<0b1001, (outs tGPR:$Rd), (ins tGPR:$Rn),
1150 "rsb", "\t$Rd, $Rn, #0",
1151 [(set tGPR:$Rd, (ineg tGPR:$Rn))]>;
1153 // Subtract with carry register
1154 let Uses = [CPSR] in
1155 def tSBC : // A8.6.151
1156 T1sItDPEncode<0b0110, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
1158 "sbc", "\t$Rdn, $Rm",
1159 [(set tGPR:$Rdn, (sube tGPR:$Rn, tGPR:$Rm))]>;
1161 // Subtract immediate
1162 def tSUBi3 : // A8.6.210 T1
1163 T1sIGenEncodeImm<0b01111, (outs tGPR:$Rd), (ins tGPR:$Rm, i32imm:$imm3),
1165 "sub", "\t$Rd, $Rm, $imm3",
1166 [(set tGPR:$Rd, (add tGPR:$Rm, imm0_7_neg:$imm3))]> {
1168 let Inst{8-6} = imm3;
1171 def tSUBi8 : // A8.6.210 T2
1172 T1sItGenEncodeImm<{1,1,1,?,?}, (outs tGPR:$Rdn), (ins tGPR:$Rn, i32imm:$imm8),
1174 "sub", "\t$Rdn, $imm8",
1175 [(set tGPR:$Rdn, (add tGPR:$Rn, imm8_255_neg:$imm8))]>;
1177 // Subtract register
1178 def tSUBrr : // A8.6.212
1179 T1sIGenEncode<0b01101, (outs tGPR:$Rd), (ins tGPR:$Rn, tGPR:$Rm),
1181 "sub", "\t$Rd, $Rn, $Rm",
1182 [(set tGPR:$Rd, (sub tGPR:$Rn, tGPR:$Rm))]>;
1184 // TODO: A7-96: STMIA - store multiple.
1187 def tSXTB : // A8.6.222
1188 T1pIMiscEncode<{0,0,1,0,0,1,?}, (outs tGPR:$Rd), (ins tGPR:$Rm),
1190 "sxtb", "\t$Rd, $Rm",
1191 [(set tGPR:$Rd, (sext_inreg tGPR:$Rm, i8))]>,
1192 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1194 // Sign-extend short
1195 def tSXTH : // A8.6.224
1196 T1pIMiscEncode<{0,0,1,0,0,0,?}, (outs tGPR:$Rd), (ins tGPR:$Rm),
1198 "sxth", "\t$Rd, $Rm",
1199 [(set tGPR:$Rd, (sext_inreg tGPR:$Rm, i16))]>,
1200 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1203 let isCompare = 1, isCommutable = 1, Defs = [CPSR] in
1204 def tTST : // A8.6.230
1205 T1pIDPEncode<0b1000, (outs), (ins tGPR:$Rn, tGPR:$Rm), IIC_iTSTr,
1206 "tst", "\t$Rn, $Rm",
1207 [(ARMcmpZ (and_su tGPR:$Rn, tGPR:$Rm), 0)]>;
1210 def tUXTB : // A8.6.262
1211 T1pIMiscEncode<{0,0,1,0,1,1,?}, (outs tGPR:$Rd), (ins tGPR:$Rm),
1213 "uxtb", "\t$Rd, $Rm",
1214 [(set tGPR:$Rd, (and tGPR:$Rm, 0xFF))]>,
1215 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1217 // Zero-extend short
1218 def tUXTH : // A8.6.264
1219 T1pIMiscEncode<{0,0,1,0,1,0,?}, (outs tGPR:$Rd), (ins tGPR:$Rm),
1221 "uxth", "\t$Rd, $Rm",
1222 [(set tGPR:$Rd, (and tGPR:$Rm, 0xFFFF))]>,
1223 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1225 // Conditional move tMOVCCr - Used to implement the Thumb SELECT_CC operation.
1226 // Expanded after instruction selection into a branch sequence.
1227 let usesCustomInserter = 1 in // Expanded after instruction selection.
1228 def tMOVCCr_pseudo :
1229 PseudoInst<(outs tGPR:$dst), (ins tGPR:$false, tGPR:$true, pred:$cc),
1231 [/*(set tGPR:$dst, (ARMcmov tGPR:$false, tGPR:$true, imm:$cc))*/]>;
1234 // 16-bit movcc in IT blocks for Thumb2.
1235 let neverHasSideEffects = 1 in {
1236 def tMOVCCr : T1pIt<(outs GPR:$Rdn), (ins GPR:$Rn, GPR:$Rm), IIC_iCMOVr,
1237 "mov", "\t$Rdn, $Rm", []>,
1238 T1Special<{1,0,?,?}> {
1241 let Inst{7} = Rdn{3};
1243 let Inst{2-0} = Rdn{2-0};
1246 let isMoveImm = 1 in
1247 def tMOVCCi : T1pIt<(outs tGPR:$Rdn), (ins tGPR:$Rn, i32imm:$Rm), IIC_iCMOVi,
1248 "mov", "\t$Rdn, $Rm", []>,
1249 T1General<{1,0,0,?,?}> {
1252 let Inst{10-8} = Rdn;
1256 } // neverHasSideEffects
1258 // tLEApcrel - Load a pc-relative address into a register without offending the
1260 let neverHasSideEffects = 1, isReMaterializable = 1 in
1261 def tLEApcrel : T1I<(outs tGPR:$Rd), (ins i32imm:$label, pred:$p), IIC_iALUi,
1262 "adr${p}\t$Rd, #$label", []>,
1263 T1Encoding<{1,0,1,0,0,?}> {
1266 let Inst{10-8} = Rd;
1267 // FIXME: Add label encoding/fixup
1270 def tLEApcrelJT : T1I<(outs tGPR:$Rd),
1271 (ins i32imm:$label, nohash_imm:$id, pred:$p),
1272 IIC_iALUi, "adr${p}\t$Rd, #${label}_${id}", []>,
1273 T1Encoding<{1,0,1,0,0,?}> {
1276 let Inst{10-8} = Rd;
1277 // FIXME: Add label encoding/fixup
1280 //===----------------------------------------------------------------------===//
1284 // __aeabi_read_tp preserves the registers r1-r3.
1285 let isCall = 1, Defs = [R0, LR], Uses = [SP] in
1286 def tTPsoft : TIx2<0b11110, 0b11, 1, (outs), (ins), IIC_Br,
1287 "bl\t__aeabi_read_tp",
1288 [(set R0, ARMthread_pointer)]> {
1289 // Encoding is 0xf7fffffe.
1290 let Inst = 0xf7fffffe;
1293 //===----------------------------------------------------------------------===//
1294 // SJLJ Exception handling intrinsics
1297 // eh_sjlj_setjmp() is an instruction sequence to store the return address and
1298 // save #0 in R0 for the non-longjmp case. Since by its nature we may be coming
1299 // from some other function to get here, and we're using the stack frame for the
1300 // containing function to save/restore registers, we can't keep anything live in
1301 // regs across the eh_sjlj_setjmp(), else it will almost certainly have been
1302 // tromped upon when we get here from a longjmp(). We force everthing out of
1303 // registers except for our own input by listing the relevant registers in
1304 // Defs. By doing so, we also cause the prologue/epilogue code to actively
1305 // preserve all of the callee-saved resgisters, which is exactly what we want.
1306 // $val is a scratch register for our use.
1307 let Defs = [ R0, R1, R2, R3, R4, R5, R6, R7, R12 ],
1308 hasSideEffects = 1, isBarrier = 1, isCodeGenOnly = 1 in
1309 def tInt_eh_sjlj_setjmp : ThumbXI<(outs),(ins tGPR:$src, tGPR:$val),
1310 AddrModeNone, SizeSpecial, NoItinerary, "","",
1311 [(set R0, (ARMeh_sjlj_setjmp tGPR:$src, tGPR:$val))]>;
1313 // FIXME: Non-Darwin version(s)
1314 let isBarrier = 1, hasSideEffects = 1, isTerminator = 1, isCodeGenOnly = 1,
1315 Defs = [ R7, LR, SP ] in
1316 def tInt_eh_sjlj_longjmp : XI<(outs), (ins GPR:$src, GPR:$scratch),
1317 AddrModeNone, SizeSpecial, IndexModeNone,
1318 Pseudo, NoItinerary, "", "",
1319 [(ARMeh_sjlj_longjmp GPR:$src, GPR:$scratch)]>,
1320 Requires<[IsThumb, IsDarwin]>;
1322 //===----------------------------------------------------------------------===//
1323 // Non-Instruction Patterns
1327 def : T1Pat<(ARMcmpZ tGPR:$Rn, imm0_255:$imm8),
1328 (tCMPi8 tGPR:$Rn, imm0_255:$imm8)>;
1329 def : T1Pat<(ARMcmpZ tGPR:$Rn, tGPR:$Rm),
1330 (tCMPr tGPR:$Rn, tGPR:$Rm)>;
1333 def : T1Pat<(addc tGPR:$lhs, imm0_7:$rhs),
1334 (tADDi3 tGPR:$lhs, imm0_7:$rhs)>;
1335 def : T1Pat<(addc tGPR:$lhs, imm8_255:$rhs),
1336 (tADDi8 tGPR:$lhs, imm8_255:$rhs)>;
1337 def : T1Pat<(addc tGPR:$lhs, tGPR:$rhs),
1338 (tADDrr tGPR:$lhs, tGPR:$rhs)>;
1340 // Subtract with carry
1341 def : T1Pat<(addc tGPR:$lhs, imm0_7_neg:$rhs),
1342 (tSUBi3 tGPR:$lhs, imm0_7_neg:$rhs)>;
1343 def : T1Pat<(addc tGPR:$lhs, imm8_255_neg:$rhs),
1344 (tSUBi8 tGPR:$lhs, imm8_255_neg:$rhs)>;
1345 def : T1Pat<(subc tGPR:$lhs, tGPR:$rhs),
1346 (tSUBrr tGPR:$lhs, tGPR:$rhs)>;
1348 // ConstantPool, GlobalAddress
1349 def : T1Pat<(ARMWrapper tglobaladdr :$dst), (tLEApcrel tglobaladdr :$dst)>;
1350 def : T1Pat<(ARMWrapper tconstpool :$dst), (tLEApcrel tconstpool :$dst)>;
1353 def : T1Pat<(ARMWrapperJT tjumptable:$dst, imm:$id),
1354 (tLEApcrelJT tjumptable:$dst, imm:$id)>;
1357 def : T1Pat<(ARMtcall texternalsym:$func), (tBL texternalsym:$func)>,
1358 Requires<[IsThumb, IsNotDarwin]>;
1359 def : T1Pat<(ARMtcall texternalsym:$func), (tBLr9 texternalsym:$func)>,
1360 Requires<[IsThumb, IsDarwin]>;
1362 def : Tv5Pat<(ARMcall texternalsym:$func), (tBLXi texternalsym:$func)>,
1363 Requires<[IsThumb, HasV5T, IsNotDarwin]>;
1364 def : Tv5Pat<(ARMcall texternalsym:$func), (tBLXi_r9 texternalsym:$func)>,
1365 Requires<[IsThumb, HasV5T, IsDarwin]>;
1367 // Indirect calls to ARM routines
1368 def : Tv5Pat<(ARMcall GPR:$dst), (tBLXr GPR:$dst)>,
1369 Requires<[IsThumb, HasV5T, IsNotDarwin]>;
1370 def : Tv5Pat<(ARMcall GPR:$dst), (tBLXr_r9 GPR:$dst)>,
1371 Requires<[IsThumb, HasV5T, IsDarwin]>;
1373 // zextload i1 -> zextload i8
1374 def : T1Pat<(zextloadi1 t_addrmode_s1:$addr),
1375 (tLDRB t_addrmode_s1:$addr)>;
1377 // extload -> zextload
1378 def : T1Pat<(extloadi1 t_addrmode_s1:$addr), (tLDRB t_addrmode_s1:$addr)>;
1379 def : T1Pat<(extloadi8 t_addrmode_s1:$addr), (tLDRB t_addrmode_s1:$addr)>;
1380 def : T1Pat<(extloadi16 t_addrmode_s2:$addr), (tLDRH t_addrmode_s2:$addr)>;
1382 // If it's impossible to use [r,r] address mode for sextload, select to
1383 // ldr{b|h} + sxt{b|h} instead.
1384 def : T1Pat<(sextloadi8 t_addrmode_s1:$addr),
1385 (tSXTB (tLDRB t_addrmode_s1:$addr))>,
1386 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1387 def : T1Pat<(sextloadi16 t_addrmode_s2:$addr),
1388 (tSXTH (tLDRH t_addrmode_s2:$addr))>,
1389 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1391 def : T1Pat<(sextloadi8 t_addrmode_s1:$addr),
1392 (tASRri (tLSLri (tLDRB t_addrmode_s1:$addr), 24), 24)>;
1393 def : T1Pat<(sextloadi16 t_addrmode_s1:$addr),
1394 (tASRri (tLSLri (tLDRH t_addrmode_s1:$addr), 16), 16)>;
1396 // Large immediate handling.
1399 def : T1Pat<(i32 thumb_immshifted:$src),
1400 (tLSLri (tMOVi8 (thumb_immshifted_val imm:$src)),
1401 (thumb_immshifted_shamt imm:$src))>;
1403 def : T1Pat<(i32 imm0_255_comp:$src),
1404 (tMVN (tMOVi8 (imm_comp_XFORM imm:$src)))>;
1406 // Pseudo instruction that combines ldr from constpool and add pc. This should
1407 // be expanded into two instructions late to allow if-conversion and
1409 let isReMaterializable = 1 in
1410 def tLDRpci_pic : PseudoInst<(outs GPR:$dst), (ins i32imm:$addr, pclabel:$cp),
1412 [(set GPR:$dst, (ARMpic_add (load (ARMWrapper tconstpool:$addr)),
1414 Requires<[IsThumb, IsThumb1Only]>;