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, SDNPOptInGlue, SDNPOutGlue,
22 def imm_sr_XFORM: SDNodeXForm<imm, [{
23 unsigned Imm = N->getZExtValue();
24 return CurDAG->getTargetConstant((Imm == 32 ? 0 : Imm), MVT::i32);
26 def ThumbSRImmAsmOperand: AsmOperandClass { let Name = "ImmThumbSR"; }
27 def imm_sr : Operand<i32>, PatLeaf<(imm), [{
28 uint64_t Imm = N->getZExtValue();
29 return Imm > 0 && Imm <= 32;
31 let PrintMethod = "printThumbSRImm";
32 let ParserMatchClass = ThumbSRImmAsmOperand;
35 def imm_neg_XFORM : SDNodeXForm<imm, [{
36 return CurDAG->getTargetConstant(-(int)N->getZExtValue(), MVT::i32);
38 def imm_comp_XFORM : SDNodeXForm<imm, [{
39 return CurDAG->getTargetConstant(~((uint32_t)N->getZExtValue()), MVT::i32);
42 def imm0_7_neg : PatLeaf<(i32 imm), [{
43 return (uint32_t)-N->getZExtValue() < 8;
46 def imm0_255_comp : PatLeaf<(i32 imm), [{
47 return ~((uint32_t)N->getZExtValue()) < 256;
50 def imm8_255 : ImmLeaf<i32, [{
51 return Imm >= 8 && Imm < 256;
53 def imm8_255_neg : PatLeaf<(i32 imm), [{
54 unsigned Val = -N->getZExtValue();
55 return Val >= 8 && Val < 256;
58 // Break imm's up into two pieces: an immediate + a left shift. This uses
59 // thumb_immshifted to match and thumb_immshifted_val and thumb_immshifted_shamt
60 // to get the val/shift pieces.
61 def thumb_immshifted : PatLeaf<(imm), [{
62 return ARM_AM::isThumbImmShiftedVal((unsigned)N->getZExtValue());
65 def thumb_immshifted_val : SDNodeXForm<imm, [{
66 unsigned V = ARM_AM::getThumbImmNonShiftedVal((unsigned)N->getZExtValue());
67 return CurDAG->getTargetConstant(V, MVT::i32);
70 def thumb_immshifted_shamt : SDNodeXForm<imm, [{
71 unsigned V = ARM_AM::getThumbImmValShift((unsigned)N->getZExtValue());
72 return CurDAG->getTargetConstant(V, MVT::i32);
75 // ADR instruction labels.
76 def t_adrlabel : Operand<i32> {
77 let EncoderMethod = "getThumbAdrLabelOpValue";
80 // Scaled 4 immediate.
81 def t_imm0_1020s4_asmoperand: AsmOperandClass { let Name = "Imm0_1020s4"; }
82 def t_imm0_1020s4 : Operand<i32> {
83 let PrintMethod = "printThumbS4ImmOperand";
84 let ParserMatchClass = t_imm0_1020s4_asmoperand;
85 let OperandType = "OPERAND_IMMEDIATE";
88 def t_imm0_508s4_asmoperand: AsmOperandClass { let Name = "Imm0_508s4"; }
89 def t_imm0_508s4 : Operand<i32> {
90 let PrintMethod = "printThumbS4ImmOperand";
91 let ParserMatchClass = t_imm0_508s4_asmoperand;
92 let OperandType = "OPERAND_IMMEDIATE";
95 // Define Thumb specific addressing modes.
97 let OperandType = "OPERAND_PCREL" in {
98 def t_brtarget : Operand<OtherVT> {
99 let EncoderMethod = "getThumbBRTargetOpValue";
100 let DecoderMethod = "DecodeThumbBROperand";
103 def t_bcctarget : Operand<i32> {
104 let EncoderMethod = "getThumbBCCTargetOpValue";
105 let DecoderMethod = "DecodeThumbBCCTargetOperand";
108 def t_cbtarget : Operand<i32> {
109 let EncoderMethod = "getThumbCBTargetOpValue";
110 let DecoderMethod = "DecodeThumbCmpBROperand";
113 def t_bltarget : Operand<i32> {
114 let EncoderMethod = "getThumbBLTargetOpValue";
115 let DecoderMethod = "DecodeThumbBLTargetOperand";
118 def t_blxtarget : Operand<i32> {
119 let EncoderMethod = "getThumbBLXTargetOpValue";
120 let DecoderMethod = "DecodeThumbBLXOffset";
124 // t_addrmode_rr := reg + reg
126 def t_addrmode_rr_asm_operand : AsmOperandClass { let Name = "MemThumbRR"; }
127 def t_addrmode_rr : Operand<i32>,
128 ComplexPattern<i32, 2, "SelectThumbAddrModeRR", []> {
129 let EncoderMethod = "getThumbAddrModeRegRegOpValue";
130 let PrintMethod = "printThumbAddrModeRROperand";
131 let DecoderMethod = "DecodeThumbAddrModeRR";
132 let ParserMatchClass = t_addrmode_rr_asm_operand;
133 let MIOperandInfo = (ops tGPR:$base, tGPR:$offsreg);
136 // t_addrmode_rrs := reg + reg
138 // We use separate scaled versions because the Select* functions need
139 // to explicitly check for a matching constant and return false here so that
140 // the reg+imm forms will match instead. This is a horrible way to do that,
141 // as it forces tight coupling between the methods, but it's how selectiondag
143 def t_addrmode_rrs1 : Operand<i32>,
144 ComplexPattern<i32, 2, "SelectThumbAddrModeRI5S1", []> {
145 let EncoderMethod = "getThumbAddrModeRegRegOpValue";
146 let PrintMethod = "printThumbAddrModeRROperand";
147 let DecoderMethod = "DecodeThumbAddrModeRR";
148 let ParserMatchClass = t_addrmode_rr_asm_operand;
149 let MIOperandInfo = (ops tGPR:$base, tGPR:$offsreg);
151 def t_addrmode_rrs2 : Operand<i32>,
152 ComplexPattern<i32, 2, "SelectThumbAddrModeRI5S2", []> {
153 let EncoderMethod = "getThumbAddrModeRegRegOpValue";
154 let DecoderMethod = "DecodeThumbAddrModeRR";
155 let PrintMethod = "printThumbAddrModeRROperand";
156 let ParserMatchClass = t_addrmode_rr_asm_operand;
157 let MIOperandInfo = (ops tGPR:$base, tGPR:$offsreg);
159 def t_addrmode_rrs4 : Operand<i32>,
160 ComplexPattern<i32, 2, "SelectThumbAddrModeRI5S4", []> {
161 let EncoderMethod = "getThumbAddrModeRegRegOpValue";
162 let DecoderMethod = "DecodeThumbAddrModeRR";
163 let PrintMethod = "printThumbAddrModeRROperand";
164 let ParserMatchClass = t_addrmode_rr_asm_operand;
165 let MIOperandInfo = (ops tGPR:$base, tGPR:$offsreg);
168 // t_addrmode_is4 := reg + imm5 * 4
170 def t_addrmode_is4_asm_operand : AsmOperandClass { let Name = "MemThumbRIs4"; }
171 def t_addrmode_is4 : Operand<i32>,
172 ComplexPattern<i32, 2, "SelectThumbAddrModeImm5S4", []> {
173 let EncoderMethod = "getAddrModeISOpValue";
174 let DecoderMethod = "DecodeThumbAddrModeIS";
175 let PrintMethod = "printThumbAddrModeImm5S4Operand";
176 let ParserMatchClass = t_addrmode_is4_asm_operand;
177 let MIOperandInfo = (ops tGPR:$base, i32imm:$offsimm);
180 // t_addrmode_is2 := reg + imm5 * 2
182 def t_addrmode_is2_asm_operand : AsmOperandClass { let Name = "MemThumbRIs2"; }
183 def t_addrmode_is2 : Operand<i32>,
184 ComplexPattern<i32, 2, "SelectThumbAddrModeImm5S2", []> {
185 let EncoderMethod = "getAddrModeISOpValue";
186 let DecoderMethod = "DecodeThumbAddrModeIS";
187 let PrintMethod = "printThumbAddrModeImm5S2Operand";
188 let ParserMatchClass = t_addrmode_is2_asm_operand;
189 let MIOperandInfo = (ops tGPR:$base, i32imm:$offsimm);
192 // t_addrmode_is1 := reg + imm5
194 def t_addrmode_is1_asm_operand : AsmOperandClass { let Name = "MemThumbRIs1"; }
195 def t_addrmode_is1 : Operand<i32>,
196 ComplexPattern<i32, 2, "SelectThumbAddrModeImm5S1", []> {
197 let EncoderMethod = "getAddrModeISOpValue";
198 let DecoderMethod = "DecodeThumbAddrModeIS";
199 let PrintMethod = "printThumbAddrModeImm5S1Operand";
200 let ParserMatchClass = t_addrmode_is1_asm_operand;
201 let MIOperandInfo = (ops tGPR:$base, i32imm:$offsimm);
204 // t_addrmode_sp := sp + imm8 * 4
206 // FIXME: This really shouldn't have an explicit SP operand at all. It should
207 // be implicit, just like in the instruction encoding itself.
208 def t_addrmode_sp_asm_operand : AsmOperandClass { let Name = "MemThumbSPI"; }
209 def t_addrmode_sp : Operand<i32>,
210 ComplexPattern<i32, 2, "SelectThumbAddrModeSP", []> {
211 let EncoderMethod = "getAddrModeThumbSPOpValue";
212 let DecoderMethod = "DecodeThumbAddrModeSP";
213 let PrintMethod = "printThumbAddrModeSPOperand";
214 let ParserMatchClass = t_addrmode_sp_asm_operand;
215 let MIOperandInfo = (ops GPR:$base, i32imm:$offsimm);
218 // t_addrmode_pc := <label> => pc + imm8 * 4
220 def t_addrmode_pc : Operand<i32> {
221 let EncoderMethod = "getAddrModePCOpValue";
222 let DecoderMethod = "DecodeThumbAddrModePC";
225 //===----------------------------------------------------------------------===//
226 // Miscellaneous Instructions.
229 // FIXME: Marking these as hasSideEffects is necessary to prevent machine DCE
230 // from removing one half of the matched pairs. That breaks PEI, which assumes
231 // these will always be in pairs, and asserts if it finds otherwise. Better way?
232 let Defs = [SP], Uses = [SP], hasSideEffects = 1 in {
233 def tADJCALLSTACKUP :
234 PseudoInst<(outs), (ins i32imm:$amt1, i32imm:$amt2), NoItinerary,
235 [(ARMcallseq_end imm:$amt1, imm:$amt2)]>,
236 Requires<[IsThumb, IsThumb1Only]>;
238 def tADJCALLSTACKDOWN :
239 PseudoInst<(outs), (ins i32imm:$amt), NoItinerary,
240 [(ARMcallseq_start imm:$amt)]>,
241 Requires<[IsThumb, IsThumb1Only]>;
244 class T1SystemEncoding<bits<8> opc>
245 : T1Encoding<0b101111> {
246 let Inst{9-8} = 0b11;
250 def tNOP : T1pI<(outs), (ins), NoItinerary, "nop", "", []>,
251 T1SystemEncoding<0x00>, // A8.6.110
252 Requires<[IsThumb2]>;
254 def tYIELD : T1pI<(outs), (ins), NoItinerary, "yield", "", []>,
255 T1SystemEncoding<0x10>; // A8.6.410
257 def tWFE : T1pI<(outs), (ins), NoItinerary, "wfe", "", []>,
258 T1SystemEncoding<0x20>; // A8.6.408
260 def tWFI : T1pI<(outs), (ins), NoItinerary, "wfi", "", []>,
261 T1SystemEncoding<0x30>; // A8.6.409
263 def tSEV : T1pI<(outs), (ins), NoItinerary, "sev", "", []>,
264 T1SystemEncoding<0x40>; // A8.6.157
266 // The imm operand $val can be used by a debugger to store more information
267 // about the breakpoint.
268 def tBKPT : T1I<(outs), (ins imm0_255:$val), NoItinerary, "bkpt\t$val",
270 T1Encoding<0b101111> {
271 let Inst{9-8} = 0b10;
277 def tSETEND : T1I<(outs), (ins setend_op:$end), NoItinerary, "setend\t$end",
278 []>, T1Encoding<0b101101> {
281 let Inst{9-5} = 0b10010;
284 let Inst{2-0} = 0b000;
287 // Change Processor State is a system instruction -- for disassembly only.
288 def tCPS : T1I<(outs), (ins imod_op:$imod, iflags_op:$iflags),
289 NoItinerary, "cps$imod $iflags", []>,
297 let Inst{2-0} = iflags;
298 let DecoderMethod = "DecodeThumbCPS";
301 // For both thumb1 and thumb2.
302 let isNotDuplicable = 1, isCodeGenOnly = 1 in
303 def tPICADD : TIt<(outs GPR:$dst), (ins GPR:$lhs, pclabel:$cp), IIC_iALUr, "",
304 [(set GPR:$dst, (ARMpic_add GPR:$lhs, imm:$cp))]>,
305 T1Special<{0,0,?,?}> {
308 let Inst{6-3} = 0b1111; // Rm = pc
312 // ADD <Rd>, sp, #<imm8>
313 // FIXME: This should not be marked as having side effects, and it should be
314 // rematerializable. Clearing the side effect bit causes miscompilations,
315 // probably because the instruction can be moved around.
316 def tADDrSPi : T1pI<(outs tGPR:$dst), (ins GPRsp:$sp, t_imm0_1020s4:$imm),
317 IIC_iALUi, "add", "\t$dst, $sp, $imm", []>,
318 T1Encoding<{1,0,1,0,1,?}> {
322 let Inst{10-8} = dst;
324 let DecoderMethod = "DecodeThumbAddSpecialReg";
327 // ADD sp, sp, #<imm7>
328 def tADDspi : T1pIt<(outs GPRsp:$Rdn), (ins GPRsp:$Rn, t_imm0_508s4:$imm),
329 IIC_iALUi, "add", "\t$Rdn, $imm", []>,
330 T1Misc<{0,0,0,0,0,?,?}> {
334 let DecoderMethod = "DecodeThumbAddSPImm";
337 // SUB sp, sp, #<imm7>
338 // FIXME: The encoding and the ASM string don't match up.
339 def tSUBspi : T1pIt<(outs GPRsp:$Rdn), (ins GPRsp:$Rn, t_imm0_508s4:$imm),
340 IIC_iALUi, "sub", "\t$Rdn, $imm", []>,
341 T1Misc<{0,0,0,0,1,?,?}> {
345 let DecoderMethod = "DecodeThumbAddSPImm";
348 // Can optionally specify SP as a three operand instruction.
349 def : tInstAlias<"add${p} sp, sp, $imm",
350 (tADDspi SP, t_imm0_508s4:$imm, pred:$p)>;
351 def : tInstAlias<"sub${p} sp, sp, $imm",
352 (tSUBspi SP, t_imm0_508s4:$imm, pred:$p)>;
355 def tADDrSP : T1pIt<(outs GPR:$Rdn), (ins GPR:$Rn, GPRsp:$sp), IIC_iALUr,
356 "add", "\t$Rdn, $sp, $Rn", []>,
357 T1Special<{0,0,?,?}> {
358 // A8.6.9 Encoding T1
360 let Inst{7} = Rdn{3};
361 let Inst{6-3} = 0b1101;
362 let Inst{2-0} = Rdn{2-0};
363 let DecoderMethod = "DecodeThumbAddSPReg";
367 def tADDspr : T1pIt<(outs GPRsp:$Rdn), (ins GPRsp:$Rn, GPR:$Rm), IIC_iALUr,
368 "add", "\t$Rdn, $Rm", []>,
369 T1Special<{0,0,?,?}> {
370 // A8.6.9 Encoding T2
374 let Inst{2-0} = 0b101;
375 let DecoderMethod = "DecodeThumbAddSPReg";
378 //===----------------------------------------------------------------------===//
379 // Control Flow Instructions.
383 let isBranch = 1, isTerminator = 1, isBarrier = 1, isIndirectBranch = 1 in {
384 def tBX : TI<(outs), (ins GPR:$Rm, pred:$p), IIC_Br, "bx${p}\t$Rm", []>,
385 T1Special<{1,1,0,?}> {
389 let Inst{2-0} = 0b000;
393 let isReturn = 1, isTerminator = 1, isBarrier = 1 in {
394 def tBX_RET : tPseudoExpand<(outs), (ins pred:$p), 2, IIC_Br,
395 [(ARMretflag)], (tBX LR, pred:$p)>;
397 // Alternative return instruction used by vararg functions.
398 def tBX_RET_vararg : tPseudoExpand<(outs), (ins tGPR:$Rm, pred:$p),
400 (tBX GPR:$Rm, pred:$p)>;
403 // All calls clobber the non-callee saved registers. SP is marked as a use to
404 // prevent stack-pointer assignments that appear immediately before calls from
405 // potentially appearing dead.
407 // On non-IOS platforms R9 is callee-saved.
408 Defs = [R0, R1, R2, R3, R12, LR,
409 Q0, Q1, Q2, Q3, Q8, Q9, Q10, Q11, Q12, Q13, Q14, Q15,
412 // Also used for Thumb2
413 def tBL : TIx2<0b11110, 0b11, 1,
414 (outs), (ins pred:$p, t_bltarget:$func, variable_ops), IIC_Br,
416 [(ARMtcall tglobaladdr:$func)]>,
417 Requires<[IsThumb, IsNotIOS]> {
419 let Inst{26} = func{21};
420 let Inst{25-16} = func{20-11};
423 let Inst{10-0} = func{10-0};
426 // ARMv5T and above, also used for Thumb2
427 def tBLXi : TIx2<0b11110, 0b11, 0,
428 (outs), (ins pred:$p, t_blxtarget:$func, variable_ops), IIC_Br,
430 [(ARMcall tglobaladdr:$func)]>,
431 Requires<[IsThumb, HasV5T, IsNotIOS]> {
433 let Inst{25-16} = func{20-11};
436 let Inst{10-1} = func{10-1};
437 let Inst{0} = 0; // func{0} is assumed zero
440 // Also used for Thumb2
441 def tBLXr : TI<(outs), (ins pred:$p, GPR:$func, variable_ops), IIC_Br,
443 [(ARMtcall GPR:$func)]>,
444 Requires<[IsThumb, HasV5T, IsNotIOS]>,
445 T1Special<{1,1,1,?}> { // A6.2.3 & A8.6.24;
447 let Inst{6-3} = func;
448 let Inst{2-0} = 0b000;
452 def tBX_CALL : tPseudoInst<(outs), (ins tGPR:$func, variable_ops),
454 [(ARMcall_nolink tGPR:$func)]>,
455 Requires<[IsThumb, IsThumb1Only, IsNotIOS]>;
459 // On IOS R9 is call-clobbered.
460 // R7 is marked as a use to prevent frame-pointer assignments from being
461 // moved above / below calls.
462 Defs = [R0, R1, R2, R3, R9, R12, LR,
463 Q0, Q1, Q2, Q3, Q8, Q9, Q10, Q11, Q12, Q13, Q14, Q15,
466 // Also used for Thumb2
467 def tBLr9 : tPseudoExpand<(outs), (ins pred:$p, t_bltarget:$func, variable_ops),
468 4, IIC_Br, [(ARMtcall tglobaladdr:$func)],
469 (tBL pred:$p, t_bltarget:$func)>,
470 Requires<[IsThumb, IsIOS]>;
472 // ARMv5T and above, also used for Thumb2
473 def tBLXi_r9 : tPseudoExpand<(outs), (ins pred:$p, t_blxtarget:$func, variable_ops),
474 4, IIC_Br, [(ARMcall tglobaladdr:$func)],
475 (tBLXi pred:$p, t_blxtarget:$func)>,
476 Requires<[IsThumb, HasV5T, IsIOS]>;
478 // Also used for Thumb2
479 def tBLXr_r9 : tPseudoExpand<(outs), (ins pred:$p, GPR:$func, variable_ops),
480 2, IIC_Br, [(ARMtcall GPR:$func)],
481 (tBLXr pred:$p, GPR:$func)>,
482 Requires<[IsThumb, HasV5T, IsIOS]>;
485 def tBXr9_CALL : tPseudoInst<(outs), (ins tGPR:$func, variable_ops),
487 [(ARMcall_nolink tGPR:$func)]>,
488 Requires<[IsThumb, IsThumb1Only, IsIOS]>;
491 let isBranch = 1, isTerminator = 1, isBarrier = 1 in {
492 let isPredicable = 1 in
493 def tB : T1pI<(outs), (ins t_brtarget:$target), IIC_Br,
494 "b", "\t$target", [(br bb:$target)]>,
495 T1Encoding<{1,1,1,0,0,?}> {
497 let Inst{10-0} = target;
501 // Just a pseudo for a tBL instruction. Needed to let regalloc know about
502 // the clobber of LR.
504 def tBfar : tPseudoExpand<(outs), (ins t_bltarget:$target, pred:$p),
505 4, IIC_Br, [], (tBL pred:$p, t_bltarget:$target)>;
507 def tBR_JTr : tPseudoInst<(outs),
508 (ins tGPR:$target, i32imm:$jt, i32imm:$id),
510 [(ARMbrjt tGPR:$target, tjumptable:$jt, imm:$id)]> {
511 list<Predicate> Predicates = [IsThumb, IsThumb1Only];
515 // FIXME: should be able to write a pattern for ARMBrcond, but can't use
516 // a two-value operand where a dag node expects two operands. :(
517 let isBranch = 1, isTerminator = 1 in
518 def tBcc : T1I<(outs), (ins t_bcctarget:$target, pred:$p), IIC_Br,
520 [/*(ARMbrcond bb:$target, imm:$cc)*/]>,
521 T1BranchCond<{1,1,0,1}> {
525 let Inst{7-0} = target;
529 let isCall = 1, isTerminator = 1, isReturn = 1, isBarrier = 1 in {
531 let Defs = [R0, R1, R2, R3, R9, R12,
532 Q0, Q1, Q2, Q3, Q8, Q9, Q10, Q11, Q12, Q13, Q14, Q15, PC],
534 // tTAILJMPd: IOS version uses a Thumb2 branch (no Thumb1 tail calls
535 // on IOS), so it's in ARMInstrThumb2.td.
536 def tTAILJMPr : tPseudoExpand<(outs), (ins tcGPR:$dst, variable_ops),
538 (tBX GPR:$dst, (ops 14, zero_reg))>,
539 Requires<[IsThumb, IsIOS]>;
541 // Non-IOS versions (the difference is R9).
542 let Defs = [R0, R1, R2, R3, R12,
543 Q0, Q1, Q2, Q3, Q8, Q9, Q10, Q11, Q12, Q13, Q14, Q15, PC],
545 def tTAILJMPdND : tPseudoExpand<(outs),
546 (ins t_brtarget:$dst, pred:$p, variable_ops),
548 (tB t_brtarget:$dst, pred:$p)>,
549 Requires<[IsThumb, IsNotIOS]>;
550 def tTAILJMPrND : tPseudoExpand<(outs), (ins tcGPR:$dst, variable_ops),
552 (tBX GPR:$dst, (ops 14, zero_reg))>,
553 Requires<[IsThumb, IsNotIOS]>;
558 // A8.6.218 Supervisor Call (Software Interrupt)
559 // A8.6.16 B: Encoding T1
560 // If Inst{11-8} == 0b1111 then SEE SVC
561 let isCall = 1, Uses = [SP] in
562 def tSVC : T1pI<(outs), (ins imm0_255:$imm), IIC_Br,
563 "svc", "\t$imm", []>, Encoding16 {
565 let Inst{15-12} = 0b1101;
566 let Inst{11-8} = 0b1111;
570 // The assembler uses 0xDEFE for a trap instruction.
571 let isBarrier = 1, isTerminator = 1 in
572 def tTRAP : TI<(outs), (ins), IIC_Br,
573 "trap", [(trap)]>, Encoding16 {
577 //===----------------------------------------------------------------------===//
578 // Load Store Instructions.
581 // Loads: reg/reg and reg/imm5
582 let canFoldAsLoad = 1, isReMaterializable = 1 in
583 multiclass thumb_ld_rr_ri_enc<bits<3> reg_opc, bits<4> imm_opc,
584 Operand AddrMode_r, Operand AddrMode_i,
585 AddrMode am, InstrItinClass itin_r,
586 InstrItinClass itin_i, string asm,
589 T1pILdStEncode<reg_opc,
590 (outs tGPR:$Rt), (ins AddrMode_r:$addr),
591 am, itin_r, asm, "\t$Rt, $addr",
592 [(set tGPR:$Rt, (opnode AddrMode_r:$addr))]>;
594 T1pILdStEncodeImm<imm_opc, 1 /* Load */,
595 (outs tGPR:$Rt), (ins AddrMode_i:$addr),
596 am, itin_i, asm, "\t$Rt, $addr",
597 [(set tGPR:$Rt, (opnode AddrMode_i:$addr))]>;
599 // Stores: reg/reg and reg/imm5
600 multiclass thumb_st_rr_ri_enc<bits<3> reg_opc, bits<4> imm_opc,
601 Operand AddrMode_r, Operand AddrMode_i,
602 AddrMode am, InstrItinClass itin_r,
603 InstrItinClass itin_i, string asm,
606 T1pILdStEncode<reg_opc,
607 (outs), (ins tGPR:$Rt, AddrMode_r:$addr),
608 am, itin_r, asm, "\t$Rt, $addr",
609 [(opnode tGPR:$Rt, AddrMode_r:$addr)]>;
611 T1pILdStEncodeImm<imm_opc, 0 /* Store */,
612 (outs), (ins tGPR:$Rt, AddrMode_i:$addr),
613 am, itin_i, asm, "\t$Rt, $addr",
614 [(opnode tGPR:$Rt, AddrMode_i:$addr)]>;
618 defm tLDR : thumb_ld_rr_ri_enc<0b100, 0b0110, t_addrmode_rrs4,
619 t_addrmode_is4, AddrModeT1_4,
620 IIC_iLoad_r, IIC_iLoad_i, "ldr",
621 UnOpFrag<(load node:$Src)>>;
624 defm tLDRB : thumb_ld_rr_ri_enc<0b110, 0b0111, t_addrmode_rrs1,
625 t_addrmode_is1, AddrModeT1_1,
626 IIC_iLoad_bh_r, IIC_iLoad_bh_i, "ldrb",
627 UnOpFrag<(zextloadi8 node:$Src)>>;
630 defm tLDRH : thumb_ld_rr_ri_enc<0b101, 0b1000, t_addrmode_rrs2,
631 t_addrmode_is2, AddrModeT1_2,
632 IIC_iLoad_bh_r, IIC_iLoad_bh_i, "ldrh",
633 UnOpFrag<(zextloadi16 node:$Src)>>;
635 let AddedComplexity = 10 in
636 def tLDRSB : // A8.6.80
637 T1pILdStEncode<0b011, (outs tGPR:$Rt), (ins t_addrmode_rr:$addr),
638 AddrModeT1_1, IIC_iLoad_bh_r,
639 "ldrsb", "\t$Rt, $addr",
640 [(set tGPR:$Rt, (sextloadi8 t_addrmode_rr:$addr))]>;
642 let AddedComplexity = 10 in
643 def tLDRSH : // A8.6.84
644 T1pILdStEncode<0b111, (outs tGPR:$Rt), (ins t_addrmode_rr:$addr),
645 AddrModeT1_2, IIC_iLoad_bh_r,
646 "ldrsh", "\t$Rt, $addr",
647 [(set tGPR:$Rt, (sextloadi16 t_addrmode_rr:$addr))]>;
649 let canFoldAsLoad = 1 in
650 def tLDRspi : T1pIs<(outs tGPR:$Rt), (ins t_addrmode_sp:$addr), IIC_iLoad_i,
651 "ldr", "\t$Rt, $addr",
652 [(set tGPR:$Rt, (load t_addrmode_sp:$addr))]>,
657 let Inst{7-0} = addr;
661 // FIXME: Use ldr.n to work around a darwin assembler bug.
662 let canFoldAsLoad = 1, isReMaterializable = 1, isCodeGenOnly = 1 in
663 def tLDRpci : T1pIs<(outs tGPR:$Rt), (ins t_addrmode_pc:$addr), IIC_iLoad_i,
664 "ldr", ".n\t$Rt, $addr",
665 [(set tGPR:$Rt, (load (ARMWrapper tconstpool:$addr)))]>,
666 T1Encoding<{0,1,0,0,1,?}> {
671 let Inst{7-0} = addr;
674 // FIXME: Remove this entry when the above ldr.n workaround is fixed.
675 // For assembly/disassembly use only.
676 def tLDRpciASM : T1pIs<(outs tGPR:$Rt), (ins t_addrmode_pc:$addr), IIC_iLoad_i,
677 "ldr", "\t$Rt, $addr", []>,
678 T1Encoding<{0,1,0,0,1,?}> {
683 let Inst{7-0} = addr;
686 // A8.6.194 & A8.6.192
687 defm tSTR : thumb_st_rr_ri_enc<0b000, 0b0110, t_addrmode_rrs4,
688 t_addrmode_is4, AddrModeT1_4,
689 IIC_iStore_r, IIC_iStore_i, "str",
690 BinOpFrag<(store node:$LHS, node:$RHS)>>;
692 // A8.6.197 & A8.6.195
693 defm tSTRB : thumb_st_rr_ri_enc<0b010, 0b0111, t_addrmode_rrs1,
694 t_addrmode_is1, AddrModeT1_1,
695 IIC_iStore_bh_r, IIC_iStore_bh_i, "strb",
696 BinOpFrag<(truncstorei8 node:$LHS, node:$RHS)>>;
698 // A8.6.207 & A8.6.205
699 defm tSTRH : thumb_st_rr_ri_enc<0b001, 0b1000, t_addrmode_rrs2,
700 t_addrmode_is2, AddrModeT1_2,
701 IIC_iStore_bh_r, IIC_iStore_bh_i, "strh",
702 BinOpFrag<(truncstorei16 node:$LHS, node:$RHS)>>;
705 def tSTRspi : T1pIs<(outs), (ins tGPR:$Rt, t_addrmode_sp:$addr), IIC_iStore_i,
706 "str", "\t$Rt, $addr",
707 [(store tGPR:$Rt, t_addrmode_sp:$addr)]>,
712 let Inst{7-0} = addr;
715 //===----------------------------------------------------------------------===//
716 // Load / store multiple Instructions.
719 // These require base address to be written back or one of the loaded regs.
720 let neverHasSideEffects = 1 in {
722 let mayLoad = 1, hasExtraDefRegAllocReq = 1 in
723 def tLDMIA : T1I<(outs), (ins tGPR:$Rn, pred:$p, reglist:$regs, variable_ops),
724 IIC_iLoad_m, "ldm${p}\t$Rn, $regs", []>, T1Encoding<{1,1,0,0,1,?}> {
728 let Inst{7-0} = regs;
731 // Writeback version is just a pseudo, as there's no encoding difference.
732 // Writeback happens iff the base register is not in the destination register
735 InstTemplate<AddrModeNone, 0, IndexModeNone, Pseudo, GenericDomain,
736 "$Rn = $wb", IIC_iLoad_mu>,
737 PseudoInstExpansion<(tLDMIA tGPR:$Rn, pred:$p, reglist:$regs)> {
739 let OutOperandList = (outs GPR:$wb);
740 let InOperandList = (ins GPR:$Rn, pred:$p, reglist:$regs, variable_ops);
742 let isCodeGenOnly = 1;
744 list<Predicate> Predicates = [IsThumb];
747 // There is no non-writeback version of STM for Thumb.
748 let mayStore = 1, hasExtraSrcRegAllocReq = 1 in
749 def tSTMIA_UPD : Thumb1I<(outs GPR:$wb),
750 (ins tGPR:$Rn, pred:$p, reglist:$regs, variable_ops),
751 AddrModeNone, 2, IIC_iStore_mu,
752 "stm${p}\t$Rn!, $regs", "$Rn = $wb", []>,
753 T1Encoding<{1,1,0,0,0,?}> {
757 let Inst{7-0} = regs;
760 } // neverHasSideEffects
762 def : InstAlias<"ldm${p} $Rn!, $regs",
763 (tLDMIA tGPR:$Rn, pred:$p, reglist:$regs)>,
764 Requires<[IsThumb, IsThumb1Only]>;
766 let mayLoad = 1, Uses = [SP], Defs = [SP], hasExtraDefRegAllocReq = 1 in
767 def tPOP : T1I<(outs), (ins pred:$p, reglist:$regs, variable_ops),
769 "pop${p}\t$regs", []>,
770 T1Misc<{1,1,0,?,?,?,?}> {
772 let Inst{8} = regs{15};
773 let Inst{7-0} = regs{7-0};
776 let mayStore = 1, Uses = [SP], Defs = [SP], hasExtraSrcRegAllocReq = 1 in
777 def tPUSH : T1I<(outs), (ins pred:$p, reglist:$regs, variable_ops),
779 "push${p}\t$regs", []>,
780 T1Misc<{0,1,0,?,?,?,?}> {
782 let Inst{8} = regs{14};
783 let Inst{7-0} = regs{7-0};
786 //===----------------------------------------------------------------------===//
787 // Arithmetic Instructions.
790 // Helper classes for encoding T1pI patterns:
791 class T1pIDPEncode<bits<4> opA, dag oops, dag iops, InstrItinClass itin,
792 string opc, string asm, list<dag> pattern>
793 : T1pI<oops, iops, itin, opc, asm, pattern>,
794 T1DataProcessing<opA> {
800 class T1pIMiscEncode<bits<7> opA, dag oops, dag iops, InstrItinClass itin,
801 string opc, string asm, list<dag> pattern>
802 : T1pI<oops, iops, itin, opc, asm, pattern>,
810 // Helper classes for encoding T1sI patterns:
811 class T1sIDPEncode<bits<4> opA, dag oops, dag iops, InstrItinClass itin,
812 string opc, string asm, list<dag> pattern>
813 : T1sI<oops, iops, itin, opc, asm, pattern>,
814 T1DataProcessing<opA> {
820 class T1sIGenEncode<bits<5> opA, dag oops, dag iops, InstrItinClass itin,
821 string opc, string asm, list<dag> pattern>
822 : T1sI<oops, iops, itin, opc, asm, pattern>,
831 class T1sIGenEncodeImm<bits<5> opA, dag oops, dag iops, InstrItinClass itin,
832 string opc, string asm, list<dag> pattern>
833 : T1sI<oops, iops, itin, opc, asm, pattern>,
841 // Helper classes for encoding T1sIt patterns:
842 class T1sItDPEncode<bits<4> opA, dag oops, dag iops, InstrItinClass itin,
843 string opc, string asm, list<dag> pattern>
844 : T1sIt<oops, iops, itin, opc, asm, pattern>,
845 T1DataProcessing<opA> {
851 class T1sItGenEncodeImm<bits<5> opA, dag oops, dag iops, InstrItinClass itin,
852 string opc, string asm, list<dag> pattern>
853 : T1sIt<oops, iops, itin, opc, asm, pattern>,
857 let Inst{10-8} = Rdn;
858 let Inst{7-0} = imm8;
861 // Add with carry register
862 let isCommutable = 1, Uses = [CPSR] in
864 T1sItDPEncode<0b0101, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm), IIC_iALUr,
865 "adc", "\t$Rdn, $Rm",
866 [(set tGPR:$Rdn, (adde tGPR:$Rn, tGPR:$Rm))]>;
869 def tADDi3 : // A8.6.4 T1
870 T1sIGenEncodeImm<0b01110, (outs tGPR:$Rd), (ins tGPR:$Rm, imm0_7:$imm3),
872 "add", "\t$Rd, $Rm, $imm3",
873 [(set tGPR:$Rd, (add tGPR:$Rm, imm0_7:$imm3))]> {
875 let Inst{8-6} = imm3;
878 def tADDi8 : // A8.6.4 T2
879 T1sItGenEncodeImm<{1,1,0,?,?}, (outs tGPR:$Rdn),
880 (ins tGPR:$Rn, imm0_255:$imm8), IIC_iALUi,
881 "add", "\t$Rdn, $imm8",
882 [(set tGPR:$Rdn, (add tGPR:$Rn, imm8_255:$imm8))]>;
885 let isCommutable = 1 in
886 def tADDrr : // A8.6.6 T1
887 T1sIGenEncode<0b01100, (outs tGPR:$Rd), (ins tGPR:$Rn, tGPR:$Rm),
889 "add", "\t$Rd, $Rn, $Rm",
890 [(set tGPR:$Rd, (add tGPR:$Rn, tGPR:$Rm))]>;
892 let neverHasSideEffects = 1 in
893 def tADDhirr : T1pIt<(outs GPR:$Rdn), (ins GPR:$Rn, GPR:$Rm), IIC_iALUr,
894 "add", "\t$Rdn, $Rm", []>,
895 T1Special<{0,0,?,?}> {
899 let Inst{7} = Rdn{3};
901 let Inst{2-0} = Rdn{2-0};
905 let isCommutable = 1 in
906 def tAND : // A8.6.12
907 T1sItDPEncode<0b0000, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
909 "and", "\t$Rdn, $Rm",
910 [(set tGPR:$Rdn, (and tGPR:$Rn, tGPR:$Rm))]>;
913 def tASRri : // A8.6.14
914 T1sIGenEncodeImm<{0,1,0,?,?}, (outs tGPR:$Rd), (ins tGPR:$Rm, imm_sr:$imm5),
916 "asr", "\t$Rd, $Rm, $imm5",
917 [(set tGPR:$Rd, (sra tGPR:$Rm, (i32 imm_sr:$imm5)))]> {
919 let Inst{10-6} = imm5;
923 def tASRrr : // A8.6.15
924 T1sItDPEncode<0b0100, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
926 "asr", "\t$Rdn, $Rm",
927 [(set tGPR:$Rdn, (sra tGPR:$Rn, tGPR:$Rm))]>;
930 def tBIC : // A8.6.20
931 T1sItDPEncode<0b1110, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
933 "bic", "\t$Rdn, $Rm",
934 [(set tGPR:$Rdn, (and tGPR:$Rn, (not tGPR:$Rm)))]>;
937 let isCompare = 1, Defs = [CPSR] in {
938 //FIXME: Disable CMN, as CCodes are backwards from compare expectations
939 // Compare-to-zero still works out, just not the relationals
940 //def tCMN : // A8.6.33
941 // T1pIDPEncode<0b1011, (outs), (ins tGPR:$lhs, tGPR:$rhs),
943 // "cmn", "\t$lhs, $rhs",
944 // [(ARMcmp tGPR:$lhs, (ineg tGPR:$rhs))]>;
946 def tCMNz : // A8.6.33
947 T1pIDPEncode<0b1011, (outs), (ins tGPR:$Rn, tGPR:$Rm),
950 [(ARMcmpZ tGPR:$Rn, (ineg tGPR:$Rm))]>;
952 } // isCompare = 1, Defs = [CPSR]
955 let isCompare = 1, Defs = [CPSR] in {
956 def tCMPi8 : T1pI<(outs), (ins tGPR:$Rn, imm0_255:$imm8), IIC_iCMPi,
957 "cmp", "\t$Rn, $imm8",
958 [(ARMcmp tGPR:$Rn, imm0_255:$imm8)]>,
959 T1General<{1,0,1,?,?}> {
964 let Inst{7-0} = imm8;
968 def tCMPr : // A8.6.36 T1
969 T1pIDPEncode<0b1010, (outs), (ins tGPR:$Rn, tGPR:$Rm),
972 [(ARMcmp tGPR:$Rn, tGPR:$Rm)]>;
974 def tCMPhir : T1pI<(outs), (ins GPR:$Rn, GPR:$Rm), IIC_iCMPr,
975 "cmp", "\t$Rn, $Rm", []>,
976 T1Special<{0,1,?,?}> {
982 let Inst{2-0} = Rn{2-0};
984 } // isCompare = 1, Defs = [CPSR]
988 let isCommutable = 1 in
989 def tEOR : // A8.6.45
990 T1sItDPEncode<0b0001, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
992 "eor", "\t$Rdn, $Rm",
993 [(set tGPR:$Rdn, (xor tGPR:$Rn, tGPR:$Rm))]>;
996 def tLSLri : // A8.6.88
997 T1sIGenEncodeImm<{0,0,0,?,?}, (outs tGPR:$Rd), (ins tGPR:$Rm, imm0_31:$imm5),
999 "lsl", "\t$Rd, $Rm, $imm5",
1000 [(set tGPR:$Rd, (shl tGPR:$Rm, (i32 imm:$imm5)))]> {
1002 let Inst{10-6} = imm5;
1006 def tLSLrr : // A8.6.89
1007 T1sItDPEncode<0b0010, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
1009 "lsl", "\t$Rdn, $Rm",
1010 [(set tGPR:$Rdn, (shl tGPR:$Rn, tGPR:$Rm))]>;
1013 def tLSRri : // A8.6.90
1014 T1sIGenEncodeImm<{0,0,1,?,?}, (outs tGPR:$Rd), (ins tGPR:$Rm, imm_sr:$imm5),
1016 "lsr", "\t$Rd, $Rm, $imm5",
1017 [(set tGPR:$Rd, (srl tGPR:$Rm, (i32 imm_sr:$imm5)))]> {
1019 let Inst{10-6} = imm5;
1023 def tLSRrr : // A8.6.91
1024 T1sItDPEncode<0b0011, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
1026 "lsr", "\t$Rdn, $Rm",
1027 [(set tGPR:$Rdn, (srl tGPR:$Rn, tGPR:$Rm))]>;
1030 let isMoveImm = 1 in
1031 def tMOVi8 : T1sI<(outs tGPR:$Rd), (ins imm0_255:$imm8), IIC_iMOVi,
1032 "mov", "\t$Rd, $imm8",
1033 [(set tGPR:$Rd, imm0_255:$imm8)]>,
1034 T1General<{1,0,0,?,?}> {
1038 let Inst{10-8} = Rd;
1039 let Inst{7-0} = imm8;
1041 // Because we have an explicit tMOVSr below, we need an alias to handle
1042 // the immediate "movs" form here. Blech.
1043 def : tInstAlias <"movs $Rdn, $imm",
1044 (tMOVi8 tGPR:$Rdn, CPSR, imm0_255:$imm, 14, 0)>;
1046 // A7-73: MOV(2) - mov setting flag.
1048 let neverHasSideEffects = 1 in {
1049 def tMOVr : Thumb1pI<(outs GPR:$Rd), (ins GPR:$Rm), AddrModeNone,
1051 "mov", "\t$Rd, $Rm", "", []>,
1052 T1Special<{1,0,?,?}> {
1056 let Inst{7} = Rd{3};
1058 let Inst{2-0} = Rd{2-0};
1060 let Defs = [CPSR] in
1061 def tMOVSr : T1I<(outs tGPR:$Rd), (ins tGPR:$Rm), IIC_iMOVr,
1062 "movs\t$Rd, $Rm", []>, Encoding16 {
1066 let Inst{15-6} = 0b0000000000;
1070 } // neverHasSideEffects
1072 // Multiply register
1073 let isCommutable = 1 in
1074 def tMUL : // A8.6.105 T1
1075 Thumb1sI<(outs tGPR:$Rd), (ins tGPR:$Rn, tGPR:$Rm), AddrModeNone, 2,
1076 IIC_iMUL32, "mul", "\t$Rd, $Rn, $Rm", "$Rm = $Rd",
1077 [(set tGPR:$Rd, (mul tGPR:$Rn, tGPR:$Rm))]>,
1078 T1DataProcessing<0b1101> {
1083 let AsmMatchConverter = "cvtThumbMultiply";
1086 def :tInstAlias<"mul${s}${p} $Rdm, $Rn", (tMUL tGPR:$Rdm, s_cc_out:$s, tGPR:$Rn,
1089 // Move inverse register
1090 def tMVN : // A8.6.107
1091 T1sIDPEncode<0b1111, (outs tGPR:$Rd), (ins tGPR:$Rn), IIC_iMVNr,
1092 "mvn", "\t$Rd, $Rn",
1093 [(set tGPR:$Rd, (not tGPR:$Rn))]>;
1095 // Bitwise or register
1096 let isCommutable = 1 in
1097 def tORR : // A8.6.114
1098 T1sItDPEncode<0b1100, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
1100 "orr", "\t$Rdn, $Rm",
1101 [(set tGPR:$Rdn, (or tGPR:$Rn, tGPR:$Rm))]>;
1104 def tREV : // A8.6.134
1105 T1pIMiscEncode<{1,0,1,0,0,0,?}, (outs tGPR:$Rd), (ins tGPR:$Rm),
1107 "rev", "\t$Rd, $Rm",
1108 [(set tGPR:$Rd, (bswap tGPR:$Rm))]>,
1109 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1111 def tREV16 : // A8.6.135
1112 T1pIMiscEncode<{1,0,1,0,0,1,?}, (outs tGPR:$Rd), (ins tGPR:$Rm),
1114 "rev16", "\t$Rd, $Rm",
1115 [(set tGPR:$Rd, (rotr (bswap tGPR:$Rm), (i32 16)))]>,
1116 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1118 def tREVSH : // A8.6.136
1119 T1pIMiscEncode<{1,0,1,0,1,1,?}, (outs tGPR:$Rd), (ins tGPR:$Rm),
1121 "revsh", "\t$Rd, $Rm",
1122 [(set tGPR:$Rd, (sra (bswap tGPR:$Rm), (i32 16)))]>,
1123 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1125 // Rotate right register
1126 def tROR : // A8.6.139
1127 T1sItDPEncode<0b0111, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
1129 "ror", "\t$Rdn, $Rm",
1130 [(set tGPR:$Rdn, (rotr tGPR:$Rn, tGPR:$Rm))]>;
1133 def tRSB : // A8.6.141
1134 T1sIDPEncode<0b1001, (outs tGPR:$Rd), (ins tGPR:$Rn),
1136 "rsb", "\t$Rd, $Rn, #0",
1137 [(set tGPR:$Rd, (ineg tGPR:$Rn))]>;
1139 // Subtract with carry register
1140 let Uses = [CPSR] in
1141 def tSBC : // A8.6.151
1142 T1sItDPEncode<0b0110, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
1144 "sbc", "\t$Rdn, $Rm",
1145 [(set tGPR:$Rdn, (sube tGPR:$Rn, tGPR:$Rm))]>;
1147 // Subtract immediate
1148 def tSUBi3 : // A8.6.210 T1
1149 T1sIGenEncodeImm<0b01111, (outs tGPR:$Rd), (ins tGPR:$Rm, imm0_7:$imm3),
1151 "sub", "\t$Rd, $Rm, $imm3",
1152 [(set tGPR:$Rd, (add tGPR:$Rm, imm0_7_neg:$imm3))]> {
1154 let Inst{8-6} = imm3;
1157 def tSUBi8 : // A8.6.210 T2
1158 T1sItGenEncodeImm<{1,1,1,?,?}, (outs tGPR:$Rdn),
1159 (ins tGPR:$Rn, imm0_255:$imm8), IIC_iALUi,
1160 "sub", "\t$Rdn, $imm8",
1161 [(set tGPR:$Rdn, (add tGPR:$Rn, imm8_255_neg:$imm8))]>;
1163 // Subtract register
1164 def tSUBrr : // A8.6.212
1165 T1sIGenEncode<0b01101, (outs tGPR:$Rd), (ins tGPR:$Rn, tGPR:$Rm),
1167 "sub", "\t$Rd, $Rn, $Rm",
1168 [(set tGPR:$Rd, (sub tGPR:$Rn, tGPR:$Rm))]>;
1171 def tSXTB : // A8.6.222
1172 T1pIMiscEncode<{0,0,1,0,0,1,?}, (outs tGPR:$Rd), (ins tGPR:$Rm),
1174 "sxtb", "\t$Rd, $Rm",
1175 [(set tGPR:$Rd, (sext_inreg tGPR:$Rm, i8))]>,
1176 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1178 // Sign-extend short
1179 def tSXTH : // A8.6.224
1180 T1pIMiscEncode<{0,0,1,0,0,0,?}, (outs tGPR:$Rd), (ins tGPR:$Rm),
1182 "sxth", "\t$Rd, $Rm",
1183 [(set tGPR:$Rd, (sext_inreg tGPR:$Rm, i16))]>,
1184 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1187 let isCompare = 1, isCommutable = 1, Defs = [CPSR] in
1188 def tTST : // A8.6.230
1189 T1pIDPEncode<0b1000, (outs), (ins tGPR:$Rn, tGPR:$Rm), IIC_iTSTr,
1190 "tst", "\t$Rn, $Rm",
1191 [(ARMcmpZ (and_su tGPR:$Rn, tGPR:$Rm), 0)]>;
1194 def tUXTB : // A8.6.262
1195 T1pIMiscEncode<{0,0,1,0,1,1,?}, (outs tGPR:$Rd), (ins tGPR:$Rm),
1197 "uxtb", "\t$Rd, $Rm",
1198 [(set tGPR:$Rd, (and tGPR:$Rm, 0xFF))]>,
1199 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1201 // Zero-extend short
1202 def tUXTH : // A8.6.264
1203 T1pIMiscEncode<{0,0,1,0,1,0,?}, (outs tGPR:$Rd), (ins tGPR:$Rm),
1205 "uxth", "\t$Rd, $Rm",
1206 [(set tGPR:$Rd, (and tGPR:$Rm, 0xFFFF))]>,
1207 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1209 // Conditional move tMOVCCr - Used to implement the Thumb SELECT_CC operation.
1210 // Expanded after instruction selection into a branch sequence.
1211 let usesCustomInserter = 1 in // Expanded after instruction selection.
1212 def tMOVCCr_pseudo :
1213 PseudoInst<(outs tGPR:$dst), (ins tGPR:$false, tGPR:$true, pred:$cc),
1215 [/*(set tGPR:$dst, (ARMcmov tGPR:$false, tGPR:$true, imm:$cc))*/]>;
1217 // tLEApcrel - Load a pc-relative address into a register without offending the
1220 def tADR : T1I<(outs tGPR:$Rd), (ins t_adrlabel:$addr, pred:$p),
1221 IIC_iALUi, "adr{$p}\t$Rd, $addr", []>,
1222 T1Encoding<{1,0,1,0,0,?}> {
1225 let Inst{10-8} = Rd;
1226 let Inst{7-0} = addr;
1227 let DecoderMethod = "DecodeThumbAddSpecialReg";
1230 let neverHasSideEffects = 1, isReMaterializable = 1 in
1231 def tLEApcrel : tPseudoInst<(outs tGPR:$Rd), (ins i32imm:$label, pred:$p),
1234 def tLEApcrelJT : tPseudoInst<(outs tGPR:$Rd),
1235 (ins i32imm:$label, nohash_imm:$id, pred:$p),
1238 //===----------------------------------------------------------------------===//
1242 // __aeabi_read_tp preserves the registers r1-r3.
1243 // This is a pseudo inst so that we can get the encoding right,
1244 // complete with fixup for the aeabi_read_tp function.
1245 let isCall = 1, Defs = [R0, R12, LR, CPSR], Uses = [SP] in
1246 def tTPsoft : tPseudoInst<(outs), (ins), 4, IIC_Br,
1247 [(set R0, ARMthread_pointer)]>;
1249 //===----------------------------------------------------------------------===//
1250 // SJLJ Exception handling intrinsics
1253 // eh_sjlj_setjmp() is an instruction sequence to store the return address and
1254 // save #0 in R0 for the non-longjmp case. Since by its nature we may be coming
1255 // from some other function to get here, and we're using the stack frame for the
1256 // containing function to save/restore registers, we can't keep anything live in
1257 // regs across the eh_sjlj_setjmp(), else it will almost certainly have been
1258 // tromped upon when we get here from a longjmp(). We force everything out of
1259 // registers except for our own input by listing the relevant registers in
1260 // Defs. By doing so, we also cause the prologue/epilogue code to actively
1261 // preserve all of the callee-saved resgisters, which is exactly what we want.
1262 // $val is a scratch register for our use.
1263 let Defs = [ R0, R1, R2, R3, R4, R5, R6, R7, R12, CPSR ],
1264 hasSideEffects = 1, isBarrier = 1, isCodeGenOnly = 1,
1265 usesCustomInserter = 1 in
1266 def tInt_eh_sjlj_setjmp : ThumbXI<(outs),(ins tGPR:$src, tGPR:$val),
1267 AddrModeNone, 0, NoItinerary, "","",
1268 [(set R0, (ARMeh_sjlj_setjmp tGPR:$src, tGPR:$val))]>;
1270 // FIXME: Non-IOS version(s)
1271 let isBarrier = 1, hasSideEffects = 1, isTerminator = 1, isCodeGenOnly = 1,
1272 Defs = [ R7, LR, SP ] in
1273 def tInt_eh_sjlj_longjmp : XI<(outs), (ins GPR:$src, GPR:$scratch),
1274 AddrModeNone, 0, IndexModeNone,
1275 Pseudo, NoItinerary, "", "",
1276 [(ARMeh_sjlj_longjmp GPR:$src, GPR:$scratch)]>,
1277 Requires<[IsThumb, IsIOS]>;
1279 let Defs = [ R0, R1, R2, R3, R4, R5, R6, R7, R12, CPSR ],
1281 def tInt_eh_sjlj_dispatchsetup : PseudoInst<(outs), (ins), NoItinerary, []>;
1283 //===----------------------------------------------------------------------===//
1284 // Non-Instruction Patterns
1288 def : T1Pat<(ARMcmpZ tGPR:$Rn, imm0_255:$imm8),
1289 (tCMPi8 tGPR:$Rn, imm0_255:$imm8)>;
1290 def : T1Pat<(ARMcmpZ tGPR:$Rn, tGPR:$Rm),
1291 (tCMPr tGPR:$Rn, tGPR:$Rm)>;
1294 def : T1Pat<(addc tGPR:$lhs, imm0_7:$rhs),
1295 (tADDi3 tGPR:$lhs, imm0_7:$rhs)>;
1296 def : T1Pat<(addc tGPR:$lhs, imm8_255:$rhs),
1297 (tADDi8 tGPR:$lhs, imm8_255:$rhs)>;
1298 def : T1Pat<(addc tGPR:$lhs, tGPR:$rhs),
1299 (tADDrr tGPR:$lhs, tGPR:$rhs)>;
1301 // Subtract with carry
1302 def : T1Pat<(addc tGPR:$lhs, imm0_7_neg:$rhs),
1303 (tSUBi3 tGPR:$lhs, imm0_7_neg:$rhs)>;
1304 def : T1Pat<(addc tGPR:$lhs, imm8_255_neg:$rhs),
1305 (tSUBi8 tGPR:$lhs, imm8_255_neg:$rhs)>;
1306 def : T1Pat<(subc tGPR:$lhs, tGPR:$rhs),
1307 (tSUBrr tGPR:$lhs, tGPR:$rhs)>;
1309 // ConstantPool, GlobalAddress
1310 def : T1Pat<(ARMWrapper tglobaladdr :$dst), (tLEApcrel tglobaladdr :$dst)>;
1311 def : T1Pat<(ARMWrapper tconstpool :$dst), (tLEApcrel tconstpool :$dst)>;
1314 def : T1Pat<(ARMWrapperJT tjumptable:$dst, imm:$id),
1315 (tLEApcrelJT tjumptable:$dst, imm:$id)>;
1318 def : T1Pat<(ARMtcall texternalsym:$func), (tBL texternalsym:$func)>,
1319 Requires<[IsThumb, IsNotIOS]>;
1320 def : T1Pat<(ARMtcall texternalsym:$func), (tBLr9 texternalsym:$func)>,
1321 Requires<[IsThumb, IsIOS]>;
1323 def : Tv5Pat<(ARMcall texternalsym:$func), (tBLXi texternalsym:$func)>,
1324 Requires<[IsThumb, HasV5T, IsNotIOS]>;
1325 def : Tv5Pat<(ARMcall texternalsym:$func), (tBLXi_r9 texternalsym:$func)>,
1326 Requires<[IsThumb, HasV5T, IsIOS]>;
1328 // Indirect calls to ARM routines
1329 def : Tv5Pat<(ARMcall GPR:$dst), (tBLXr GPR:$dst)>,
1330 Requires<[IsThumb, HasV5T, IsNotIOS]>;
1331 def : Tv5Pat<(ARMcall GPR:$dst), (tBLXr_r9 GPR:$dst)>,
1332 Requires<[IsThumb, HasV5T, IsIOS]>;
1334 // zextload i1 -> zextload i8
1335 def : T1Pat<(zextloadi1 t_addrmode_rrs1:$addr),
1336 (tLDRBr t_addrmode_rrs1:$addr)>;
1337 def : T1Pat<(zextloadi1 t_addrmode_is1:$addr),
1338 (tLDRBi t_addrmode_is1:$addr)>;
1340 // extload -> zextload
1341 def : T1Pat<(extloadi1 t_addrmode_rrs1:$addr), (tLDRBr t_addrmode_rrs1:$addr)>;
1342 def : T1Pat<(extloadi1 t_addrmode_is1:$addr), (tLDRBi t_addrmode_is1:$addr)>;
1343 def : T1Pat<(extloadi8 t_addrmode_rrs1:$addr), (tLDRBr t_addrmode_rrs1:$addr)>;
1344 def : T1Pat<(extloadi8 t_addrmode_is1:$addr), (tLDRBi t_addrmode_is1:$addr)>;
1345 def : T1Pat<(extloadi16 t_addrmode_rrs2:$addr), (tLDRHr t_addrmode_rrs2:$addr)>;
1346 def : T1Pat<(extloadi16 t_addrmode_is2:$addr), (tLDRHi t_addrmode_is2:$addr)>;
1348 // If it's impossible to use [r,r] address mode for sextload, select to
1349 // ldr{b|h} + sxt{b|h} instead.
1350 def : T1Pat<(sextloadi8 t_addrmode_is1:$addr),
1351 (tSXTB (tLDRBi t_addrmode_is1:$addr))>,
1352 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1353 def : T1Pat<(sextloadi8 t_addrmode_rrs1:$addr),
1354 (tSXTB (tLDRBr t_addrmode_rrs1:$addr))>,
1355 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1356 def : T1Pat<(sextloadi16 t_addrmode_is2:$addr),
1357 (tSXTH (tLDRHi t_addrmode_is2:$addr))>,
1358 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1359 def : T1Pat<(sextloadi16 t_addrmode_rrs2:$addr),
1360 (tSXTH (tLDRHr t_addrmode_rrs2:$addr))>,
1361 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1363 def : T1Pat<(sextloadi8 t_addrmode_rrs1:$addr),
1364 (tASRri (tLSLri (tLDRBr t_addrmode_rrs1:$addr), 24), 24)>;
1365 def : T1Pat<(sextloadi8 t_addrmode_is1:$addr),
1366 (tASRri (tLSLri (tLDRBi t_addrmode_is1:$addr), 24), 24)>;
1367 def : T1Pat<(sextloadi16 t_addrmode_rrs2:$addr),
1368 (tASRri (tLSLri (tLDRHr t_addrmode_rrs2:$addr), 16), 16)>;
1369 def : T1Pat<(sextloadi16 t_addrmode_is2:$addr),
1370 (tASRri (tLSLri (tLDRHi t_addrmode_is2:$addr), 16), 16)>;
1372 def : T1Pat<(atomic_load_8 t_addrmode_is1:$src),
1373 (tLDRBi t_addrmode_is1:$src)>;
1374 def : T1Pat<(atomic_load_8 t_addrmode_rrs1:$src),
1375 (tLDRBr t_addrmode_rrs1:$src)>;
1376 def : T1Pat<(atomic_load_16 t_addrmode_is2:$src),
1377 (tLDRHi t_addrmode_is2:$src)>;
1378 def : T1Pat<(atomic_load_16 t_addrmode_rrs2:$src),
1379 (tLDRHr t_addrmode_rrs2:$src)>;
1380 def : T1Pat<(atomic_load_32 t_addrmode_is4:$src),
1381 (tLDRi t_addrmode_is4:$src)>;
1382 def : T1Pat<(atomic_load_32 t_addrmode_rrs4:$src),
1383 (tLDRr t_addrmode_rrs4:$src)>;
1384 def : T1Pat<(atomic_store_8 t_addrmode_is1:$ptr, tGPR:$val),
1385 (tSTRBi tGPR:$val, t_addrmode_is1:$ptr)>;
1386 def : T1Pat<(atomic_store_8 t_addrmode_rrs1:$ptr, tGPR:$val),
1387 (tSTRBr tGPR:$val, t_addrmode_rrs1:$ptr)>;
1388 def : T1Pat<(atomic_store_16 t_addrmode_is2:$ptr, tGPR:$val),
1389 (tSTRHi tGPR:$val, t_addrmode_is2:$ptr)>;
1390 def : T1Pat<(atomic_store_16 t_addrmode_rrs2:$ptr, tGPR:$val),
1391 (tSTRHr tGPR:$val, t_addrmode_rrs2:$ptr)>;
1392 def : T1Pat<(atomic_store_32 t_addrmode_is4:$ptr, tGPR:$val),
1393 (tSTRi tGPR:$val, t_addrmode_is4:$ptr)>;
1394 def : T1Pat<(atomic_store_32 t_addrmode_rrs4:$ptr, tGPR:$val),
1395 (tSTRr tGPR:$val, t_addrmode_rrs4:$ptr)>;
1397 // Large immediate handling.
1400 def : T1Pat<(i32 thumb_immshifted:$src),
1401 (tLSLri (tMOVi8 (thumb_immshifted_val imm:$src)),
1402 (thumb_immshifted_shamt imm:$src))>;
1404 def : T1Pat<(i32 imm0_255_comp:$src),
1405 (tMVN (tMOVi8 (imm_comp_XFORM imm:$src)))>;
1407 // Pseudo instruction that combines ldr from constpool and add pc. This should
1408 // be expanded into two instructions late to allow if-conversion and
1410 let isReMaterializable = 1 in
1411 def tLDRpci_pic : PseudoInst<(outs GPR:$dst), (ins i32imm:$addr, pclabel:$cp),
1413 [(set GPR:$dst, (ARMpic_add (load (ARMWrapper tconstpool:$addr)),
1415 Requires<[IsThumb, IsThumb1Only]>;
1417 // Pseudo-instruction for merged POP and return.
1418 // FIXME: remove when we have a way to marking a MI with these properties.
1419 let isReturn = 1, isTerminator = 1, isBarrier = 1, mayLoad = 1,
1420 hasExtraDefRegAllocReq = 1 in
1421 def tPOP_RET : tPseudoExpand<(outs), (ins pred:$p, reglist:$regs, variable_ops),
1423 (tPOP pred:$p, reglist:$regs)>;
1425 // Indirect branch using "mov pc, $Rm"
1426 let isBranch = 1, isTerminator = 1, isBarrier = 1, isIndirectBranch = 1 in {
1427 def tBRIND : tPseudoExpand<(outs), (ins GPR:$Rm, pred:$p),
1428 2, IIC_Br, [(brind GPR:$Rm)],
1429 (tMOVr PC, GPR:$Rm, pred:$p)>;
1433 // In Thumb1, "nop" is encoded as a "mov r8, r8". Technically, the bf00
1434 // encoding is available on ARMv6K, but we don't differentiate that finely.
1435 def : InstAlias<"nop", (tMOVr R8, R8, 14, 0)>,Requires<[IsThumb, IsThumb1Only]>;
1438 // For round-trip assembly/disassembly, we have to handle a CPS instruction
1439 // without any iflags. That's not, strictly speaking, valid syntax, but it's
1440 // a useful extention and assembles to defined behaviour (the insn does
1442 def : tInstAlias<"cps$imod", (tCPS imod_op:$imod, 0)>;
1443 def : tInstAlias<"cps$imod", (tCPS imod_op:$imod, 0)>;
1445 // "neg" is and alias for "rsb rd, rn, #0"
1446 def : tInstAlias<"neg${s}${p} $Rd, $Rm",
1447 (tRSB tGPR:$Rd, s_cc_out:$s, tGPR:$Rm, pred:$p)>;