1 //===- ARMInstrThumb.td - Thumb support for ARM ---------------------------===//
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]>;
21 def imm_neg_XFORM : SDNodeXForm<imm, [{
22 return CurDAG->getTargetConstant(-(int)N->getZExtValue(), MVT::i32);
24 def imm_comp_XFORM : SDNodeXForm<imm, [{
25 return CurDAG->getTargetConstant(~((uint32_t)N->getZExtValue()), MVT::i32);
29 /// imm0_7 predicate - True if the 32-bit immediate is in the range [0,7].
30 def imm0_7 : PatLeaf<(i32 imm), [{
31 return (uint32_t)N->getZExtValue() < 8;
33 def imm0_7_neg : PatLeaf<(i32 imm), [{
34 return (uint32_t)-N->getZExtValue() < 8;
37 def imm0_255 : PatLeaf<(i32 imm), [{
38 return (uint32_t)N->getZExtValue() < 256;
40 def imm0_255_comp : PatLeaf<(i32 imm), [{
41 return ~((uint32_t)N->getZExtValue()) < 256;
44 def imm8_255 : PatLeaf<(i32 imm), [{
45 return (uint32_t)N->getZExtValue() >= 8 && (uint32_t)N->getZExtValue() < 256;
47 def imm8_255_neg : PatLeaf<(i32 imm), [{
48 unsigned Val = -N->getZExtValue();
49 return Val >= 8 && Val < 256;
52 // Break imm's up into two pieces: an immediate + a left shift.
53 // This uses thumb_immshifted to match and thumb_immshifted_val and
54 // thumb_immshifted_shamt to get the val/shift pieces.
55 def thumb_immshifted : PatLeaf<(imm), [{
56 return ARM_AM::isThumbImmShiftedVal((unsigned)N->getZExtValue());
59 def thumb_immshifted_val : SDNodeXForm<imm, [{
60 unsigned V = ARM_AM::getThumbImmNonShiftedVal((unsigned)N->getZExtValue());
61 return CurDAG->getTargetConstant(V, MVT::i32);
64 def thumb_immshifted_shamt : SDNodeXForm<imm, [{
65 unsigned V = ARM_AM::getThumbImmValShift((unsigned)N->getZExtValue());
66 return CurDAG->getTargetConstant(V, MVT::i32);
69 // Scaled 4 immediate.
70 def t_imm_s4 : Operand<i32> {
71 let PrintMethod = "printThumbS4ImmOperand";
74 // Define Thumb specific addressing modes.
76 // t_addrmode_rr := reg + reg
78 def t_addrmode_rr : Operand<i32>,
79 ComplexPattern<i32, 2, "SelectThumbAddrModeRR", []> {
80 let PrintMethod = "printThumbAddrModeRROperand";
81 let MIOperandInfo = (ops tGPR:$base, tGPR:$offsreg);
84 // t_addrmode_s4 := reg + reg
87 def t_addrmode_s4 : Operand<i32>,
88 ComplexPattern<i32, 3, "SelectThumbAddrModeS4", []> {
89 let PrintMethod = "printThumbAddrModeS4Operand";
90 let MIOperandInfo = (ops tGPR:$base, i32imm:$offsimm, tGPR:$offsreg);
93 // t_addrmode_s2 := reg + reg
96 def t_addrmode_s2 : Operand<i32>,
97 ComplexPattern<i32, 3, "SelectThumbAddrModeS2", []> {
98 let PrintMethod = "printThumbAddrModeS2Operand";
99 let MIOperandInfo = (ops tGPR:$base, i32imm:$offsimm, tGPR:$offsreg);
102 // t_addrmode_s1 := reg + reg
105 def t_addrmode_s1 : Operand<i32>,
106 ComplexPattern<i32, 3, "SelectThumbAddrModeS1", []> {
107 let PrintMethod = "printThumbAddrModeS1Operand";
108 let MIOperandInfo = (ops tGPR:$base, i32imm:$offsimm, tGPR:$offsreg);
111 // t_addrmode_sp := sp + imm8 * 4
113 def t_addrmode_sp : Operand<i32>,
114 ComplexPattern<i32, 2, "SelectThumbAddrModeSP", []> {
115 let PrintMethod = "printThumbAddrModeSPOperand";
116 let MIOperandInfo = (ops GPR:$base, i32imm:$offsimm);
119 //===----------------------------------------------------------------------===//
120 // Miscellaneous Instructions.
123 // FIXME: Marking these as hasSideEffects is necessary to prevent machine DCE
124 // from removing one half of the matched pairs. That breaks PEI, which assumes
125 // these will always be in pairs, and asserts if it finds otherwise. Better way?
126 let Defs = [SP], Uses = [SP], hasSideEffects = 1 in {
127 def tADJCALLSTACKUP :
128 PseudoInst<(outs), (ins i32imm:$amt1, i32imm:$amt2), NoItinerary,
129 "@ tADJCALLSTACKUP $amt1",
130 [(ARMcallseq_end imm:$amt1, imm:$amt2)]>, Requires<[IsThumb1Only]>;
132 def tADJCALLSTACKDOWN :
133 PseudoInst<(outs), (ins i32imm:$amt), NoItinerary,
134 "@ tADJCALLSTACKDOWN $amt",
135 [(ARMcallseq_start imm:$amt)]>, Requires<[IsThumb1Only]>;
138 // The i32imm operand $val can be used by a debugger to store more information
139 // about the breakpoint.
140 def tBKPT : T1I<(outs), (ins i32imm:$val), NoItinerary, "bkpt\t$val",
141 [/* For disassembly only; pattern left blank */]>,
142 T1Encoding<0b101111> {
143 let Inst{9-8} = 0b10;
146 // For both thumb1 and thumb2.
147 let isNotDuplicable = 1 in
148 def tPICADD : TIt<(outs GPR:$dst), (ins GPR:$lhs, pclabel:$cp), IIC_iALUr,
149 "\n$cp:\n\tadd\t$dst, pc",
150 [(set GPR:$dst, (ARMpic_add GPR:$lhs, imm:$cp))]>,
151 T1Special<{0,0,?,?}> {
152 let Inst{6-3} = 0b1111; // A8.6.6 Rm = pc
156 def tADDrPCi : T1I<(outs tGPR:$dst), (ins t_imm_s4:$rhs), IIC_iALUi,
157 "add\t$dst, pc, $rhs", []>,
158 T1Encoding<{1,0,1,0,0,?}>; // A6.2 & A8.6.10
161 def tADDrSPi : T1I<(outs tGPR:$dst), (ins GPR:$sp, t_imm_s4:$rhs), IIC_iALUi,
162 "add\t$dst, $sp, $rhs", []>,
163 T1Encoding<{1,0,1,0,1,?}>; // A6.2 & A8.6.8
166 def tADDspi : TIt<(outs GPR:$dst), (ins GPR:$lhs, t_imm_s4:$rhs), IIC_iALUi,
167 "add\t$dst, $rhs", []>,
168 T1Misc<{0,0,0,0,0,?,?}>; // A6.2.5 & A8.6.8
171 def tSUBspi : TIt<(outs GPR:$dst), (ins GPR:$lhs, t_imm_s4:$rhs), IIC_iALUi,
172 "sub\t$dst, $rhs", []>,
173 T1Misc<{0,0,0,0,1,?,?}>; // A6.2.5 & A8.6.215
176 def tADDrSP : TIt<(outs GPR:$dst), (ins GPR:$lhs, GPR:$rhs), IIC_iALUr,
177 "add\t$dst, $rhs", []>,
178 T1Special<{0,0,?,?}> {
179 let Inst{6-3} = 0b1101; // A8.6.9 Encoding T1
183 def tADDspr : TIt<(outs GPR:$dst), (ins GPR:$lhs, GPR:$rhs), IIC_iALUr,
184 "add\t$dst, $rhs", []>,
185 T1Special<{0,0,?,?}> {
186 // A8.6.9 Encoding T2
188 let Inst{2-0} = 0b101;
191 // Pseudo instruction that will expand into a tSUBspi + a copy.
192 let usesCustomInserter = 1 in { // Expanded after instruction selection.
193 def tSUBspi_ : PseudoInst<(outs GPR:$dst), (ins GPR:$lhs, t_imm_s4:$rhs),
194 NoItinerary, "@ sub\t$dst, $rhs", []>;
196 def tADDspr_ : PseudoInst<(outs GPR:$dst), (ins GPR:$lhs, GPR:$rhs),
197 NoItinerary, "@ add\t$dst, $rhs", []>;
200 def tANDsp : PseudoInst<(outs tGPR:$dst), (ins tGPR:$lhs, tGPR:$rhs),
201 NoItinerary, "@ and\t$dst, $rhs", []>;
202 } // usesCustomInserter
204 //===----------------------------------------------------------------------===//
205 // Control Flow Instructions.
208 let isReturn = 1, isTerminator = 1, isBarrier = 1 in {
209 def tBX_RET : TI<(outs), (ins), IIC_Br, "bx\tlr", [(ARMretflag)]>,
210 T1Special<{1,1,0,?}> { // A6.2.3 & A8.6.25
211 let Inst{6-3} = 0b1110; // Rm = lr
213 // Alternative return instruction used by vararg functions.
214 def tBX_RET_vararg : TI<(outs), (ins tGPR:$target), IIC_Br, "bx\t$target",[]>,
215 T1Special<{1,1,0,?}>; // A6.2.3 & A8.6.25
219 let isBranch = 1, isTerminator = 1, isBarrier = 1, isIndirectBranch = 1 in {
220 def tBRIND : TI<(outs), (ins GPR:$dst), IIC_Br, "mov\tpc, $dst",
222 T1Special<{1,0,1,?}> {
223 // <Rd> = Inst{7:2-0} = pc
224 let Inst{2-0} = 0b111;
228 // FIXME: remove when we have a way to marking a MI with these properties.
229 let isReturn = 1, isTerminator = 1, isBarrier = 1, mayLoad = 1,
230 hasExtraDefRegAllocReq = 1 in
231 def tPOP_RET : T1I<(outs), (ins pred:$p, reglist:$wb, variable_ops), IIC_Br,
233 T1Misc<{1,1,0,?,?,?,?}>;
236 Defs = [R0, R1, R2, R3, R12, LR,
237 D0, D1, D2, D3, D4, D5, D6, D7,
238 D16, D17, D18, D19, D20, D21, D22, D23,
239 D24, D25, D26, D27, D28, D29, D30, D31, CPSR, FPSCR] in {
240 // Also used for Thumb2
241 def tBL : TIx2<0b11110, 0b11, 1,
242 (outs), (ins i32imm:$func, variable_ops), IIC_Br,
244 [(ARMtcall tglobaladdr:$func)]>,
245 Requires<[IsThumb, IsNotDarwin]>;
247 // ARMv5T and above, also used for Thumb2
248 def tBLXi : TIx2<0b11110, 0b11, 0,
249 (outs), (ins i32imm:$func, variable_ops), IIC_Br,
251 [(ARMcall tglobaladdr:$func)]>,
252 Requires<[IsThumb, HasV5T, IsNotDarwin]>;
254 // Also used for Thumb2
255 def tBLXr : TI<(outs), (ins GPR:$func, variable_ops), IIC_Br,
257 [(ARMtcall GPR:$func)]>,
258 Requires<[IsThumb, HasV5T, IsNotDarwin]>,
259 T1Special<{1,1,1,?}>; // A6.2.3 & A8.6.24;
262 def tBX : TIx2<{?,?,?,?,?}, {?,?}, ?,
263 (outs), (ins tGPR:$func, variable_ops), IIC_Br,
264 "mov\tlr, pc\n\tbx\t$func",
265 [(ARMcall_nolink tGPR:$func)]>,
266 Requires<[IsThumb1Only, IsNotDarwin]>;
269 // On Darwin R9 is call-clobbered.
271 Defs = [R0, R1, R2, R3, R9, R12, LR,
272 D0, D1, D2, D3, D4, D5, D6, D7,
273 D16, D17, D18, D19, D20, D21, D22, D23,
274 D24, D25, D26, D27, D28, D29, D30, D31, CPSR, FPSCR] in {
275 // Also used for Thumb2
276 def tBLr9 : TIx2<0b11110, 0b11, 1,
277 (outs), (ins i32imm:$func, variable_ops), IIC_Br,
279 [(ARMtcall tglobaladdr:$func)]>,
280 Requires<[IsThumb, IsDarwin]>;
282 // ARMv5T and above, also used for Thumb2
283 def tBLXi_r9 : TIx2<0b11110, 0b11, 0,
284 (outs), (ins i32imm:$func, variable_ops), IIC_Br,
286 [(ARMcall tglobaladdr:$func)]>,
287 Requires<[IsThumb, HasV5T, IsDarwin]>;
289 // Also used for Thumb2
290 def tBLXr_r9 : TI<(outs), (ins GPR:$func, variable_ops), IIC_Br,
292 [(ARMtcall GPR:$func)]>,
293 Requires<[IsThumb, HasV5T, IsDarwin]>,
294 T1Special<{1,1,1,?}>; // A6.2.3 & A8.6.24
297 def tBXr9 : TIx2<{?,?,?,?,?}, {?,?}, ?,
298 (outs), (ins tGPR:$func, variable_ops), IIC_Br,
299 "mov\tlr, pc\n\tbx\t$func",
300 [(ARMcall_nolink tGPR:$func)]>,
301 Requires<[IsThumb1Only, IsDarwin]>;
304 let isBranch = 1, isTerminator = 1 in {
305 let isBarrier = 1 in {
306 let isPredicable = 1 in
307 def tB : T1I<(outs), (ins brtarget:$target), IIC_Br,
308 "b\t$target", [(br bb:$target)]>,
309 T1Encoding<{1,1,1,0,0,?}>;
313 def tBfar : TIx2<0b11110, 0b11, 1, (outs), (ins brtarget:$target), IIC_Br,
314 "bl\t$target\t@ far jump",[]>;
316 def tBR_JTr : T1JTI<(outs),
317 (ins tGPR:$target, jtblock_operand:$jt, i32imm:$id),
318 IIC_Br, "mov\tpc, $target\n\t.align\t2\n$jt",
319 [(ARMbrjt tGPR:$target, tjumptable:$jt, imm:$id)]>,
321 let Inst{15-7} = 0b010001101;
322 let Inst{2-0} = 0b111;
327 // FIXME: should be able to write a pattern for ARMBrcond, but can't use
328 // a two-value operand where a dag node expects two operands. :(
329 let isBranch = 1, isTerminator = 1 in
330 def tBcc : T1I<(outs), (ins brtarget:$target, pred:$cc), IIC_Br,
332 [/*(ARMbrcond bb:$target, imm:$cc)*/]>,
333 T1Encoding<{1,1,0,1,?,?}>;
335 // Compare and branch on zero / non-zero
336 let isBranch = 1, isTerminator = 1 in {
337 def tCBZ : T1I<(outs), (ins tGPR:$cmp, brtarget:$target), IIC_Br,
338 "cbz\t$cmp, $target", []>,
339 T1Misc<{0,0,?,1,?,?,?}>;
341 def tCBNZ : T1I<(outs), (ins tGPR:$cmp, brtarget:$target), IIC_Br,
342 "cbnz\t$cmp, $target", []>,
343 T1Misc<{1,0,?,1,?,?,?}>;
346 // A8.6.218 Supervisor Call (Software Interrupt) -- for disassembly only
347 // A8.6.16 B: Encoding T1
348 // If Inst{11-8} == 0b1111 then SEE SVC
350 def tSVC : T1I<(outs), (ins i32imm:$svc, pred:$cc), IIC_Br, "svc$cc\t$svc", []>,
352 let Inst{15-12} = 0b1101;
353 let Inst{11-8} = 0b1111;
357 // A8.6.16 B: Encoding T1 -- for disassembly only
358 // If Inst{11-8} == 0b1110 then UNDEFINED
359 def tTRAP : T1I<(outs), (ins), IIC_Br, "trap", []>, Encoding16 {
360 let Inst{15-12} = 0b1101;
361 let Inst{11-8} = 0b1110;
364 //===----------------------------------------------------------------------===//
365 // Load Store Instructions.
368 let canFoldAsLoad = 1, isReMaterializable = 1, mayHaveSideEffects = 1 in
369 def tLDR : T1pI4<(outs tGPR:$dst), (ins t_addrmode_s4:$addr), IIC_iLoadr,
370 "ldr", "\t$dst, $addr",
371 [(set tGPR:$dst, (load t_addrmode_s4:$addr))]>,
373 def tLDRi: T1pI4<(outs tGPR:$dst), (ins t_addrmode_s4:$addr), IIC_iLoadr,
374 "ldr", "\t$dst, $addr",
378 def tLDRB : T1pI1<(outs tGPR:$dst), (ins t_addrmode_s1:$addr), IIC_iLoadr,
379 "ldrb", "\t$dst, $addr",
380 [(set tGPR:$dst, (zextloadi8 t_addrmode_s1:$addr))]>,
382 def tLDRBi: T1pI1<(outs tGPR:$dst), (ins t_addrmode_s1:$addr), IIC_iLoadr,
383 "ldrb", "\t$dst, $addr",
387 def tLDRH : T1pI2<(outs tGPR:$dst), (ins t_addrmode_s2:$addr), IIC_iLoadr,
388 "ldrh", "\t$dst, $addr",
389 [(set tGPR:$dst, (zextloadi16 t_addrmode_s2:$addr))]>,
391 def tLDRHi: T1pI2<(outs tGPR:$dst), (ins t_addrmode_s2:$addr), IIC_iLoadr,
392 "ldrh", "\t$dst, $addr",
396 let AddedComplexity = 10 in
397 def tLDRSB : T1pI1<(outs tGPR:$dst), (ins t_addrmode_rr:$addr), IIC_iLoadr,
398 "ldrsb", "\t$dst, $addr",
399 [(set tGPR:$dst, (sextloadi8 t_addrmode_rr:$addr))]>,
402 let AddedComplexity = 10 in
403 def tLDRSH : T1pI2<(outs tGPR:$dst), (ins t_addrmode_rr:$addr), IIC_iLoadr,
404 "ldrsh", "\t$dst, $addr",
405 [(set tGPR:$dst, (sextloadi16 t_addrmode_rr:$addr))]>,
408 let canFoldAsLoad = 1 in
409 def tLDRspi : T1pIs<(outs tGPR:$dst), (ins t_addrmode_sp:$addr), IIC_iLoadi,
410 "ldr", "\t$dst, $addr",
411 [(set tGPR:$dst, (load t_addrmode_sp:$addr))]>,
414 // Special instruction for restore. It cannot clobber condition register
415 // when it's expanded by eliminateCallFramePseudoInstr().
416 let canFoldAsLoad = 1, mayLoad = 1 in
417 def tRestore : T1pIs<(outs tGPR:$dst), (ins t_addrmode_sp:$addr), IIC_iLoadi,
418 "ldr", "\t$dst, $addr", []>,
422 // FIXME: Use ldr.n to work around a Darwin assembler bug.
423 let canFoldAsLoad = 1, isReMaterializable = 1, mayHaveSideEffects = 1 in
424 def tLDRpci : T1pIs<(outs tGPR:$dst), (ins i32imm:$addr), IIC_iLoadi,
425 "ldr", ".n\t$dst, $addr",
426 [(set tGPR:$dst, (load (ARMWrapper tconstpool:$addr)))]>,
427 T1Encoding<{0,1,0,0,1,?}>; // A6.2 & A8.6.59
429 // Special LDR for loads from non-pc-relative constpools.
430 let canFoldAsLoad = 1, mayLoad = 1, isReMaterializable = 1,
431 mayHaveSideEffects = 1 in
432 def tLDRcp : T1pIs<(outs tGPR:$dst), (ins i32imm:$addr), IIC_iLoadi,
433 "ldr", "\t$dst, $addr", []>,
436 def tSTR : T1pI4<(outs), (ins tGPR:$src, t_addrmode_s4:$addr), IIC_iStorer,
437 "str", "\t$src, $addr",
438 [(store tGPR:$src, t_addrmode_s4:$addr)]>,
440 def tSTRi: T1pI4<(outs), (ins tGPR:$src, t_addrmode_s4:$addr), IIC_iStorer,
441 "str", "\t$src, $addr",
445 def tSTRB : T1pI1<(outs), (ins tGPR:$src, t_addrmode_s1:$addr), IIC_iStorer,
446 "strb", "\t$src, $addr",
447 [(truncstorei8 tGPR:$src, t_addrmode_s1:$addr)]>,
449 def tSTRBi: T1pI1<(outs), (ins tGPR:$src, t_addrmode_s1:$addr), IIC_iStorer,
450 "strb", "\t$src, $addr",
454 def tSTRH : T1pI2<(outs), (ins tGPR:$src, t_addrmode_s2:$addr), IIC_iStorer,
455 "strh", "\t$src, $addr",
456 [(truncstorei16 tGPR:$src, t_addrmode_s2:$addr)]>,
458 def tSTRHi: T1pI2<(outs), (ins tGPR:$src, t_addrmode_s2:$addr), IIC_iStorer,
459 "strh", "\t$src, $addr",
463 def tSTRspi : T1pIs<(outs), (ins tGPR:$src, t_addrmode_sp:$addr), IIC_iStorei,
464 "str", "\t$src, $addr",
465 [(store tGPR:$src, t_addrmode_sp:$addr)]>,
468 let mayStore = 1 in {
469 // Special instruction for spill. It cannot clobber condition register
470 // when it's expanded by eliminateCallFramePseudoInstr().
471 def tSpill : T1pIs<(outs), (ins tGPR:$src, t_addrmode_sp:$addr), IIC_iStorei,
472 "str", "\t$src, $addr", []>,
476 //===----------------------------------------------------------------------===//
477 // Load / store multiple Instructions.
480 // These requires base address to be written back or one of the loaded regs.
481 let mayLoad = 1, hasExtraDefRegAllocReq = 1 in
482 def tLDM : T1I<(outs),
483 (ins addrmode4:$addr, pred:$p, reglist:$wb, variable_ops),
485 "ldm${addr:submode}${p}\t$addr, $wb", []>,
486 T1Encoding<{1,1,0,0,1,?}>; // A6.2 & A8.6.53
488 let mayStore = 1, hasExtraSrcRegAllocReq = 1 in
489 def tSTM : T1I<(outs),
490 (ins addrmode4:$addr, pred:$p, reglist:$wb, variable_ops),
492 "stm${addr:submode}${p}\t$addr, $wb", []>,
493 T1Encoding<{1,1,0,0,0,?}>; // A6.2 & A8.6.189
495 let mayLoad = 1, Uses = [SP], Defs = [SP], hasExtraDefRegAllocReq = 1 in
496 def tPOP : T1I<(outs), (ins pred:$p, reglist:$wb, variable_ops), IIC_Br,
498 T1Misc<{1,1,0,?,?,?,?}>;
500 let mayStore = 1, Uses = [SP], Defs = [SP], hasExtraSrcRegAllocReq = 1 in
501 def tPUSH : T1I<(outs), (ins pred:$p, reglist:$wb, variable_ops), IIC_Br,
502 "push${p}\t$wb", []>,
503 T1Misc<{0,1,0,?,?,?,?}>;
505 //===----------------------------------------------------------------------===//
506 // Arithmetic Instructions.
509 // Add with carry register
510 let isCommutable = 1, Uses = [CPSR] in
511 def tADC : T1sIt<(outs tGPR:$dst), (ins tGPR:$lhs, tGPR:$rhs), IIC_iALUr,
512 "adc", "\t$dst, $rhs",
513 [(set tGPR:$dst, (adde tGPR:$lhs, tGPR:$rhs))]>,
514 T1DataProcessing<0b0101>;
517 def tADDi3 : T1sI<(outs tGPR:$dst), (ins tGPR:$lhs, i32imm:$rhs), IIC_iALUi,
518 "add", "\t$dst, $lhs, $rhs",
519 [(set tGPR:$dst, (add tGPR:$lhs, imm0_7:$rhs))]>,
522 def tADDi8 : T1sIt<(outs tGPR:$dst), (ins tGPR:$lhs, i32imm:$rhs), IIC_iALUi,
523 "add", "\t$dst, $rhs",
524 [(set tGPR:$dst, (add tGPR:$lhs, imm8_255:$rhs))]>,
525 T1General<{1,1,0,?,?}>;
528 let isCommutable = 1 in
529 def tADDrr : T1sI<(outs tGPR:$dst), (ins tGPR:$lhs, tGPR:$rhs), IIC_iALUr,
530 "add", "\t$dst, $lhs, $rhs",
531 [(set tGPR:$dst, (add tGPR:$lhs, tGPR:$rhs))]>,
534 let neverHasSideEffects = 1 in
535 def tADDhirr : T1pIt<(outs GPR:$dst), (ins GPR:$lhs, GPR:$rhs), IIC_iALUr,
536 "add", "\t$dst, $rhs", []>,
537 T1Special<{0,0,?,?}>;
540 let isCommutable = 1 in
541 def tAND : T1sIt<(outs tGPR:$dst), (ins tGPR:$lhs, tGPR:$rhs), IIC_iALUr,
542 "and", "\t$dst, $rhs",
543 [(set tGPR:$dst, (and tGPR:$lhs, tGPR:$rhs))]>,
544 T1DataProcessing<0b0000>;
547 def tASRri : T1sI<(outs tGPR:$dst), (ins tGPR:$lhs, i32imm:$rhs), IIC_iMOVsi,
548 "asr", "\t$dst, $lhs, $rhs",
549 [(set tGPR:$dst, (sra tGPR:$lhs, (i32 imm:$rhs)))]>,
550 T1General<{0,1,0,?,?}>;
553 def tASRrr : T1sIt<(outs tGPR:$dst), (ins tGPR:$lhs, tGPR:$rhs), IIC_iMOVsr,
554 "asr", "\t$dst, $rhs",
555 [(set tGPR:$dst, (sra tGPR:$lhs, tGPR:$rhs))]>,
556 T1DataProcessing<0b0100>;
559 def tBIC : T1sIt<(outs tGPR:$dst), (ins tGPR:$lhs, tGPR:$rhs), IIC_iALUr,
560 "bic", "\t$dst, $rhs",
561 [(set tGPR:$dst, (and tGPR:$lhs, (not tGPR:$rhs)))]>,
562 T1DataProcessing<0b1110>;
565 let Defs = [CPSR] in {
566 //FIXME: Disable CMN, as CCodes are backwards from compare expectations
567 // Compare-to-zero still works out, just not the relationals
568 //def tCMN : T1pI<(outs), (ins tGPR:$lhs, tGPR:$rhs), IIC_iCMPr,
569 // "cmn", "\t$lhs, $rhs",
570 // [(ARMcmp tGPR:$lhs, (ineg tGPR:$rhs))]>,
571 // T1DataProcessing<0b1011>;
572 def tCMNz : T1pI<(outs), (ins tGPR:$lhs, tGPR:$rhs), IIC_iCMPr,
573 "cmn", "\t$lhs, $rhs",
574 [(ARMcmpZ tGPR:$lhs, (ineg tGPR:$rhs))]>,
575 T1DataProcessing<0b1011>;
579 let Defs = [CPSR] in {
580 def tCMPi8 : T1pI<(outs), (ins tGPR:$lhs, i32imm:$rhs), IIC_iCMPi,
581 "cmp", "\t$lhs, $rhs",
582 [(ARMcmp tGPR:$lhs, imm0_255:$rhs)]>,
583 T1General<{1,0,1,?,?}>;
584 def tCMPzi8 : T1pI<(outs), (ins tGPR:$lhs, i32imm:$rhs), IIC_iCMPi,
585 "cmp", "\t$lhs, $rhs",
586 [(ARMcmpZ tGPR:$lhs, imm0_255:$rhs)]>,
587 T1General<{1,0,1,?,?}>;
591 let Defs = [CPSR] in {
592 def tCMPr : T1pI<(outs), (ins tGPR:$lhs, tGPR:$rhs), IIC_iCMPr,
593 "cmp", "\t$lhs, $rhs",
594 [(ARMcmp tGPR:$lhs, tGPR:$rhs)]>,
595 T1DataProcessing<0b1010>;
596 def tCMPzr : T1pI<(outs), (ins tGPR:$lhs, tGPR:$rhs), IIC_iCMPr,
597 "cmp", "\t$lhs, $rhs",
598 [(ARMcmpZ tGPR:$lhs, tGPR:$rhs)]>,
599 T1DataProcessing<0b1010>;
601 def tCMPhir : T1pI<(outs), (ins GPR:$lhs, GPR:$rhs), IIC_iCMPr,
602 "cmp", "\t$lhs, $rhs", []>,
603 T1Special<{0,1,?,?}>;
604 def tCMPzhir : T1pI<(outs), (ins GPR:$lhs, GPR:$rhs), IIC_iCMPr,
605 "cmp", "\t$lhs, $rhs", []>,
606 T1Special<{0,1,?,?}>;
611 let isCommutable = 1 in
612 def tEOR : T1sIt<(outs tGPR:$dst), (ins tGPR:$lhs, tGPR:$rhs), IIC_iALUr,
613 "eor", "\t$dst, $rhs",
614 [(set tGPR:$dst, (xor tGPR:$lhs, tGPR:$rhs))]>,
615 T1DataProcessing<0b0001>;
618 def tLSLri : T1sI<(outs tGPR:$dst), (ins tGPR:$lhs, i32imm:$rhs), IIC_iMOVsi,
619 "lsl", "\t$dst, $lhs, $rhs",
620 [(set tGPR:$dst, (shl tGPR:$lhs, (i32 imm:$rhs)))]>,
621 T1General<{0,0,0,?,?}>;
624 def tLSLrr : T1sIt<(outs tGPR:$dst), (ins tGPR:$lhs, tGPR:$rhs), IIC_iMOVsr,
625 "lsl", "\t$dst, $rhs",
626 [(set tGPR:$dst, (shl tGPR:$lhs, tGPR:$rhs))]>,
627 T1DataProcessing<0b0010>;
630 def tLSRri : T1sI<(outs tGPR:$dst), (ins tGPR:$lhs, i32imm:$rhs), IIC_iMOVsi,
631 "lsr", "\t$dst, $lhs, $rhs",
632 [(set tGPR:$dst, (srl tGPR:$lhs, (i32 imm:$rhs)))]>,
633 T1General<{0,0,1,?,?}>;
636 def tLSRrr : T1sIt<(outs tGPR:$dst), (ins tGPR:$lhs, tGPR:$rhs), IIC_iMOVsr,
637 "lsr", "\t$dst, $rhs",
638 [(set tGPR:$dst, (srl tGPR:$lhs, tGPR:$rhs))]>,
639 T1DataProcessing<0b0011>;
642 def tMOVi8 : T1sI<(outs tGPR:$dst), (ins i32imm:$src), IIC_iMOVi,
643 "mov", "\t$dst, $src",
644 [(set tGPR:$dst, imm0_255:$src)]>,
645 T1General<{1,0,0,?,?}>;
647 // TODO: A7-73: MOV(2) - mov setting flag.
650 let neverHasSideEffects = 1 in {
651 // FIXME: Make this predicable.
652 def tMOVr : T1I<(outs tGPR:$dst), (ins tGPR:$src), IIC_iMOVr,
653 "mov\t$dst, $src", []>,
656 def tMOVSr : T1I<(outs tGPR:$dst), (ins tGPR:$src), IIC_iMOVr,
657 "movs\t$dst, $src", []>, Encoding16 {
658 let Inst{15-6} = 0b0000000000;
661 // FIXME: Make these predicable.
662 def tMOVgpr2tgpr : T1I<(outs tGPR:$dst), (ins GPR:$src), IIC_iMOVr,
663 "mov\t$dst, $src", []>,
664 T1Special<{1,0,0,?}>;
665 def tMOVtgpr2gpr : T1I<(outs GPR:$dst), (ins tGPR:$src), IIC_iMOVr,
666 "mov\t$dst, $src", []>,
667 T1Special<{1,0,?,0}>;
668 def tMOVgpr2gpr : T1I<(outs GPR:$dst), (ins GPR:$src), IIC_iMOVr,
669 "mov\t$dst, $src", []>,
670 T1Special<{1,0,?,?}>;
671 } // neverHasSideEffects
674 let isCommutable = 1 in
675 def tMUL : T1sIt<(outs tGPR:$dst), (ins tGPR:$lhs, tGPR:$rhs), IIC_iMUL32,
676 "mul", "\t$dst, $rhs",
677 [(set tGPR:$dst, (mul tGPR:$lhs, tGPR:$rhs))]>,
678 T1DataProcessing<0b1101>;
680 // move inverse register
681 def tMVN : T1sI<(outs tGPR:$dst), (ins tGPR:$src), IIC_iMOVr,
682 "mvn", "\t$dst, $src",
683 [(set tGPR:$dst, (not tGPR:$src))]>,
684 T1DataProcessing<0b1111>;
686 // bitwise or register
687 let isCommutable = 1 in
688 def tORR : T1sIt<(outs tGPR:$dst), (ins tGPR:$lhs, tGPR:$rhs), IIC_iALUr,
689 "orr", "\t$dst, $rhs",
690 [(set tGPR:$dst, (or tGPR:$lhs, tGPR:$rhs))]>,
691 T1DataProcessing<0b1100>;
694 def tREV : T1pI<(outs tGPR:$dst), (ins tGPR:$src), IIC_iUNAr,
695 "rev", "\t$dst, $src",
696 [(set tGPR:$dst, (bswap tGPR:$src))]>,
697 Requires<[IsThumb1Only, HasV6]>,
698 T1Misc<{1,0,1,0,0,0,?}>;
700 def tREV16 : T1pI<(outs tGPR:$dst), (ins tGPR:$src), IIC_iUNAr,
701 "rev16", "\t$dst, $src",
703 (or (and (srl tGPR:$src, (i32 8)), 0xFF),
704 (or (and (shl tGPR:$src, (i32 8)), 0xFF00),
705 (or (and (srl tGPR:$src, (i32 8)), 0xFF0000),
706 (and (shl tGPR:$src, (i32 8)), 0xFF000000)))))]>,
707 Requires<[IsThumb1Only, HasV6]>,
708 T1Misc<{1,0,1,0,0,1,?}>;
710 def tREVSH : T1pI<(outs tGPR:$dst), (ins tGPR:$src), IIC_iUNAr,
711 "revsh", "\t$dst, $src",
714 (or (srl (and tGPR:$src, 0xFF00), (i32 8)),
715 (shl tGPR:$src, (i32 8))), i16))]>,
716 Requires<[IsThumb1Only, HasV6]>,
717 T1Misc<{1,0,1,0,1,1,?}>;
719 // rotate right register
720 def tROR : T1sIt<(outs tGPR:$dst), (ins tGPR:$lhs, tGPR:$rhs), IIC_iMOVsr,
721 "ror", "\t$dst, $rhs",
722 [(set tGPR:$dst, (rotr tGPR:$lhs, tGPR:$rhs))]>,
723 T1DataProcessing<0b0111>;
726 def tRSB : T1sI<(outs tGPR:$dst), (ins tGPR:$src), IIC_iALUi,
727 "rsb", "\t$dst, $src, #0",
728 [(set tGPR:$dst, (ineg tGPR:$src))]>,
729 T1DataProcessing<0b1001>;
731 // Subtract with carry register
733 def tSBC : T1sIt<(outs tGPR:$dst), (ins tGPR:$lhs, tGPR:$rhs), IIC_iALUr,
734 "sbc", "\t$dst, $rhs",
735 [(set tGPR:$dst, (sube tGPR:$lhs, tGPR:$rhs))]>,
736 T1DataProcessing<0b0110>;
738 // Subtract immediate
739 def tSUBi3 : T1sI<(outs tGPR:$dst), (ins tGPR:$lhs, i32imm:$rhs), IIC_iALUi,
740 "sub", "\t$dst, $lhs, $rhs",
741 [(set tGPR:$dst, (add tGPR:$lhs, imm0_7_neg:$rhs))]>,
744 def tSUBi8 : T1sIt<(outs tGPR:$dst), (ins tGPR:$lhs, i32imm:$rhs), IIC_iALUi,
745 "sub", "\t$dst, $rhs",
746 [(set tGPR:$dst, (add tGPR:$lhs, imm8_255_neg:$rhs))]>,
747 T1General<{1,1,1,?,?}>;
750 def tSUBrr : T1sI<(outs tGPR:$dst), (ins tGPR:$lhs, tGPR:$rhs), IIC_iALUr,
751 "sub", "\t$dst, $lhs, $rhs",
752 [(set tGPR:$dst, (sub tGPR:$lhs, tGPR:$rhs))]>,
755 // TODO: A7-96: STMIA - store multiple.
758 def tSXTB : T1pI<(outs tGPR:$dst), (ins tGPR:$src), IIC_iUNAr,
759 "sxtb", "\t$dst, $src",
760 [(set tGPR:$dst, (sext_inreg tGPR:$src, i8))]>,
761 Requires<[IsThumb1Only, HasV6]>,
762 T1Misc<{0,0,1,0,0,1,?}>;
765 def tSXTH : T1pI<(outs tGPR:$dst), (ins tGPR:$src), IIC_iUNAr,
766 "sxth", "\t$dst, $src",
767 [(set tGPR:$dst, (sext_inreg tGPR:$src, i16))]>,
768 Requires<[IsThumb1Only, HasV6]>,
769 T1Misc<{0,0,1,0,0,0,?}>;
772 let isCommutable = 1, Defs = [CPSR] in
773 def tTST : T1pI<(outs), (ins tGPR:$lhs, tGPR:$rhs), IIC_iCMPr,
774 "tst", "\t$lhs, $rhs",
775 [(ARMcmpZ (and tGPR:$lhs, tGPR:$rhs), 0)]>,
776 T1DataProcessing<0b1000>;
779 def tUXTB : T1pI<(outs tGPR:$dst), (ins tGPR:$src), IIC_iUNAr,
780 "uxtb", "\t$dst, $src",
781 [(set tGPR:$dst, (and tGPR:$src, 0xFF))]>,
782 Requires<[IsThumb1Only, HasV6]>,
783 T1Misc<{0,0,1,0,1,1,?}>;
786 def tUXTH : T1pI<(outs tGPR:$dst), (ins tGPR:$src), IIC_iUNAr,
787 "uxth", "\t$dst, $src",
788 [(set tGPR:$dst, (and tGPR:$src, 0xFFFF))]>,
789 Requires<[IsThumb1Only, HasV6]>,
790 T1Misc<{0,0,1,0,1,0,?}>;
793 // Conditional move tMOVCCr - Used to implement the Thumb SELECT_CC operation.
794 // Expanded after instruction selection into a branch sequence.
795 let usesCustomInserter = 1 in // Expanded after instruction selection.
797 PseudoInst<(outs tGPR:$dst), (ins tGPR:$false, tGPR:$true, pred:$cc),
798 NoItinerary, "@ tMOVCCr $cc",
799 [/*(set tGPR:$dst, (ARMcmov tGPR:$false, tGPR:$true, imm:$cc))*/]>;
802 // 16-bit movcc in IT blocks for Thumb2.
803 def tMOVCCr : T1pIt<(outs GPR:$dst), (ins GPR:$lhs, GPR:$rhs), IIC_iCMOVr,
804 "mov", "\t$dst, $rhs", []>,
805 T1Special<{1,0,?,?}>;
807 def tMOVCCi : T1pIt<(outs tGPR:$dst), (ins tGPR:$lhs, i32imm:$rhs), IIC_iCMOVi,
808 "mov", "\t$dst, $rhs", []>,
809 T1General<{1,0,0,?,?}>;
811 // tLEApcrel - Load a pc-relative address into a register without offending the
813 def tLEApcrel : T1I<(outs tGPR:$dst), (ins i32imm:$label, pred:$p), IIC_iALUi,
814 "adr$p\t$dst, #$label", []>,
815 T1Encoding<{1,0,1,0,0,?}>; // A6.2 & A8.6.10
817 def tLEApcrelJT : T1I<(outs tGPR:$dst),
818 (ins i32imm:$label, nohash_imm:$id, pred:$p),
819 IIC_iALUi, "adr$p\t$dst, #${label}_${id}", []>,
820 T1Encoding<{1,0,1,0,0,?}>; // A6.2 & A8.6.10
822 //===----------------------------------------------------------------------===//
826 // __aeabi_read_tp preserves the registers r1-r3.
829 def tTPsoft : TIx2<0b11110, 0b11, 1, (outs), (ins), IIC_Br,
830 "bl\t__aeabi_read_tp",
831 [(set R0, ARMthread_pointer)]>;
834 // SJLJ Exception handling intrinsics
835 // eh_sjlj_setjmp() is an instruction sequence to store the return
836 // address and save #0 in R0 for the non-longjmp case.
837 // Since by its nature we may be coming from some other function to get
838 // here, and we're using the stack frame for the containing function to
839 // save/restore registers, we can't keep anything live in regs across
840 // the eh_sjlj_setjmp(), else it will almost certainly have been tromped upon
841 // when we get here from a longjmp(). We force everthing out of registers
842 // except for our own input by listing the relevant registers in Defs. By
843 // doing so, we also cause the prologue/epilogue code to actively preserve
844 // all of the callee-saved resgisters, which is exactly what we want.
845 // The current SP is passed in $val, and we reuse the reg as a scratch.
847 [ R0, R1, R2, R3, R4, R5, R6, R7, R12 ] in {
848 def tInt_eh_sjlj_setjmp : ThumbXI<(outs),(ins tGPR:$src, tGPR:$val),
849 AddrModeNone, SizeSpecial, NoItinerary,
850 "str\t$val, [$src, #8]\t@ begin eh.setjmp\n"
853 "\tstr\t$val, [$src, #4]\n"
856 "\tmovs\tr0, #1\t@ end eh.setjmp\n"
858 [(set R0, (ARMeh_sjlj_setjmp tGPR:$src, tGPR:$val))]>;
860 //===----------------------------------------------------------------------===//
861 // Non-Instruction Patterns
865 def : T1Pat<(addc tGPR:$lhs, imm0_7:$rhs),
866 (tADDi3 tGPR:$lhs, imm0_7:$rhs)>;
867 def : T1Pat<(addc tGPR:$lhs, imm8_255:$rhs),
868 (tADDi8 tGPR:$lhs, imm8_255:$rhs)>;
869 def : T1Pat<(addc tGPR:$lhs, tGPR:$rhs),
870 (tADDrr tGPR:$lhs, tGPR:$rhs)>;
872 // Subtract with carry
873 def : T1Pat<(addc tGPR:$lhs, imm0_7_neg:$rhs),
874 (tSUBi3 tGPR:$lhs, imm0_7_neg:$rhs)>;
875 def : T1Pat<(addc tGPR:$lhs, imm8_255_neg:$rhs),
876 (tSUBi8 tGPR:$lhs, imm8_255_neg:$rhs)>;
877 def : T1Pat<(subc tGPR:$lhs, tGPR:$rhs),
878 (tSUBrr tGPR:$lhs, tGPR:$rhs)>;
880 // ConstantPool, GlobalAddress
881 def : T1Pat<(ARMWrapper tglobaladdr :$dst), (tLEApcrel tglobaladdr :$dst)>;
882 def : T1Pat<(ARMWrapper tconstpool :$dst), (tLEApcrel tconstpool :$dst)>;
885 def : T1Pat<(ARMWrapperJT tjumptable:$dst, imm:$id),
886 (tLEApcrelJT tjumptable:$dst, imm:$id)>;
889 def : T1Pat<(ARMtcall texternalsym:$func), (tBL texternalsym:$func)>,
890 Requires<[IsThumb, IsNotDarwin]>;
891 def : T1Pat<(ARMtcall texternalsym:$func), (tBLr9 texternalsym:$func)>,
892 Requires<[IsThumb, IsDarwin]>;
894 def : Tv5Pat<(ARMcall texternalsym:$func), (tBLXi texternalsym:$func)>,
895 Requires<[IsThumb, HasV5T, IsNotDarwin]>;
896 def : Tv5Pat<(ARMcall texternalsym:$func), (tBLXi_r9 texternalsym:$func)>,
897 Requires<[IsThumb, HasV5T, IsDarwin]>;
899 // Indirect calls to ARM routines
900 def : Tv5Pat<(ARMcall GPR:$dst), (tBLXr GPR:$dst)>,
901 Requires<[IsThumb, HasV5T, IsNotDarwin]>;
902 def : Tv5Pat<(ARMcall GPR:$dst), (tBLXr_r9 GPR:$dst)>,
903 Requires<[IsThumb, HasV5T, IsDarwin]>;
905 // zextload i1 -> zextload i8
906 def : T1Pat<(zextloadi1 t_addrmode_s1:$addr),
907 (tLDRB t_addrmode_s1:$addr)>;
909 // extload -> zextload
910 def : T1Pat<(extloadi1 t_addrmode_s1:$addr), (tLDRB t_addrmode_s1:$addr)>;
911 def : T1Pat<(extloadi8 t_addrmode_s1:$addr), (tLDRB t_addrmode_s1:$addr)>;
912 def : T1Pat<(extloadi16 t_addrmode_s2:$addr), (tLDRH t_addrmode_s2:$addr)>;
914 // If it's impossible to use [r,r] address mode for sextload, select to
915 // ldr{b|h} + sxt{b|h} instead.
916 def : T1Pat<(sextloadi8 t_addrmode_s1:$addr),
917 (tSXTB (tLDRB t_addrmode_s1:$addr))>,
918 Requires<[IsThumb1Only, HasV6]>;
919 def : T1Pat<(sextloadi16 t_addrmode_s2:$addr),
920 (tSXTH (tLDRH t_addrmode_s2:$addr))>,
921 Requires<[IsThumb1Only, HasV6]>;
923 def : T1Pat<(sextloadi8 t_addrmode_s1:$addr),
924 (tASRri (tLSLri (tLDRB t_addrmode_s1:$addr), 24), 24)>;
925 def : T1Pat<(sextloadi16 t_addrmode_s1:$addr),
926 (tASRri (tLSLri (tLDRH t_addrmode_s1:$addr), 16), 16)>;
928 // Large immediate handling.
931 def : T1Pat<(i32 thumb_immshifted:$src),
932 (tLSLri (tMOVi8 (thumb_immshifted_val imm:$src)),
933 (thumb_immshifted_shamt imm:$src))>;
935 def : T1Pat<(i32 imm0_255_comp:$src),
936 (tMVN (tMOVi8 (imm_comp_XFORM imm:$src)))>;
938 // Pseudo instruction that combines ldr from constpool and add pc. This should
939 // be expanded into two instructions late to allow if-conversion and
941 let isReMaterializable = 1 in
942 def tLDRpci_pic : PseudoInst<(outs GPR:$dst), (ins i32imm:$addr, pclabel:$cp),
943 NoItinerary, "@ ldr.n\t$dst, $addr\n$cp:\n\tadd\t$dst, pc",
944 [(set GPR:$dst, (ARMpic_add (load (ARMWrapper tconstpool:$addr)),
946 Requires<[IsThumb1Only]>;