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_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);
29 def imm0_7_neg : PatLeaf<(i32 imm), [{
30 return (uint32_t)-N->getZExtValue() < 8;
33 def imm0_255_comp : PatLeaf<(i32 imm), [{
34 return ~((uint32_t)N->getZExtValue()) < 256;
37 def imm8_255 : ImmLeaf<i32, [{
38 return Imm >= 8 && Imm < 256;
40 def imm8_255_neg : PatLeaf<(i32 imm), [{
41 unsigned Val = -N->getZExtValue();
42 return Val >= 8 && Val < 256;
45 // Break imm's up into two pieces: an immediate + a left shift. This uses
46 // thumb_immshifted to match and thumb_immshifted_val and thumb_immshifted_shamt
47 // to get the val/shift pieces.
48 def thumb_immshifted : PatLeaf<(imm), [{
49 return ARM_AM::isThumbImmShiftedVal((unsigned)N->getZExtValue());
52 def thumb_immshifted_val : SDNodeXForm<imm, [{
53 unsigned V = ARM_AM::getThumbImmNonShiftedVal((unsigned)N->getZExtValue());
54 return CurDAG->getTargetConstant(V, MVT::i32);
57 def thumb_immshifted_shamt : SDNodeXForm<imm, [{
58 unsigned V = ARM_AM::getThumbImmValShift((unsigned)N->getZExtValue());
59 return CurDAG->getTargetConstant(V, MVT::i32);
62 // ADR instruction labels.
63 def t_adrlabel : Operand<i32> {
64 let EncoderMethod = "getThumbAdrLabelOpValue";
67 // Scaled 4 immediate.
68 def t_imm_s4 : Operand<i32> {
69 let PrintMethod = "printThumbS4ImmOperand";
70 let OperandType = "OPERAND_IMMEDIATE";
73 // Define Thumb specific addressing modes.
75 let OperandType = "OPERAND_PCREL" in {
76 def t_brtarget : Operand<OtherVT> {
77 let EncoderMethod = "getThumbBRTargetOpValue";
80 def t_bcctarget : Operand<i32> {
81 let EncoderMethod = "getThumbBCCTargetOpValue";
84 def t_cbtarget : Operand<i32> {
85 let EncoderMethod = "getThumbCBTargetOpValue";
88 def t_bltarget : Operand<i32> {
89 let EncoderMethod = "getThumbBLTargetOpValue";
92 def t_blxtarget : Operand<i32> {
93 let EncoderMethod = "getThumbBLXTargetOpValue";
97 // t_addrmode_rr := reg + reg
99 def t_addrmode_rr_asm_operand : AsmOperandClass { let Name = "MemThumbRR"; }
100 def t_addrmode_rr : Operand<i32>,
101 ComplexPattern<i32, 2, "SelectThumbAddrModeRR", []> {
102 let EncoderMethod = "getThumbAddrModeRegRegOpValue";
103 let PrintMethod = "printThumbAddrModeRROperand";
104 let MIOperandInfo = (ops tGPR:$base, tGPR:$offsreg);
107 // t_addrmode_rrs := reg + reg
109 def t_addrmode_rrs1 : Operand<i32>,
110 ComplexPattern<i32, 2, "SelectThumbAddrModeRI5S1", []> {
111 let EncoderMethod = "getThumbAddrModeRegRegOpValue";
112 let PrintMethod = "printThumbAddrModeRROperand";
113 let ParserMatchClass = t_addrmode_rr_asm_operand;
114 let MIOperandInfo = (ops tGPR:$base, tGPR:$offsreg);
116 def t_addrmode_rrs2 : Operand<i32>,
117 ComplexPattern<i32, 2, "SelectThumbAddrModeRI5S2", []> {
118 let EncoderMethod = "getThumbAddrModeRegRegOpValue";
119 let PrintMethod = "printThumbAddrModeRROperand";
120 let ParserMatchClass = t_addrmode_rr_asm_operand;
121 let MIOperandInfo = (ops tGPR:$base, tGPR:$offsreg);
123 def t_addrmode_rrs4 : Operand<i32>,
124 ComplexPattern<i32, 2, "SelectThumbAddrModeRI5S4", []> {
125 let EncoderMethod = "getThumbAddrModeRegRegOpValue";
126 let PrintMethod = "printThumbAddrModeRROperand";
127 let ParserMatchClass = t_addrmode_rr_asm_operand;
128 let MIOperandInfo = (ops tGPR:$base, tGPR:$offsreg);
131 // t_addrmode_is4 := reg + imm5 * 4
133 def t_addrmode_is4 : Operand<i32>,
134 ComplexPattern<i32, 2, "SelectThumbAddrModeImm5S4", []> {
135 let EncoderMethod = "getAddrModeISOpValue";
136 let PrintMethod = "printThumbAddrModeImm5S4Operand";
137 let MIOperandInfo = (ops tGPR:$base, i32imm:$offsimm);
140 // t_addrmode_is2 := reg + imm5 * 2
142 def t_addrmode_is2 : Operand<i32>,
143 ComplexPattern<i32, 2, "SelectThumbAddrModeImm5S2", []> {
144 let EncoderMethod = "getAddrModeISOpValue";
145 let PrintMethod = "printThumbAddrModeImm5S2Operand";
146 let MIOperandInfo = (ops tGPR:$base, i32imm:$offsimm);
149 // t_addrmode_is1 := reg + imm5
151 def t_addrmode_is1 : Operand<i32>,
152 ComplexPattern<i32, 2, "SelectThumbAddrModeImm5S1", []> {
153 let EncoderMethod = "getAddrModeISOpValue";
154 let PrintMethod = "printThumbAddrModeImm5S1Operand";
155 let MIOperandInfo = (ops tGPR:$base, i32imm:$offsimm);
158 // t_addrmode_sp := sp + imm8 * 4
160 def t_addrmode_sp : Operand<i32>,
161 ComplexPattern<i32, 2, "SelectThumbAddrModeSP", []> {
162 let EncoderMethod = "getAddrModeThumbSPOpValue";
163 let PrintMethod = "printThumbAddrModeSPOperand";
164 let MIOperandInfo = (ops GPR:$base, i32imm:$offsimm);
167 // t_addrmode_pc := <label> => pc + imm8 * 4
169 def t_addrmode_pc : Operand<i32> {
170 let EncoderMethod = "getAddrModePCOpValue";
173 //===----------------------------------------------------------------------===//
174 // Miscellaneous Instructions.
177 // FIXME: Marking these as hasSideEffects is necessary to prevent machine DCE
178 // from removing one half of the matched pairs. That breaks PEI, which assumes
179 // these will always be in pairs, and asserts if it finds otherwise. Better way?
180 let Defs = [SP], Uses = [SP], hasSideEffects = 1 in {
181 def tADJCALLSTACKUP :
182 PseudoInst<(outs), (ins i32imm:$amt1, i32imm:$amt2), NoItinerary,
183 [(ARMcallseq_end imm:$amt1, imm:$amt2)]>,
184 Requires<[IsThumb, IsThumb1Only]>;
186 def tADJCALLSTACKDOWN :
187 PseudoInst<(outs), (ins i32imm:$amt), NoItinerary,
188 [(ARMcallseq_start imm:$amt)]>,
189 Requires<[IsThumb, IsThumb1Only]>;
192 // T1Disassembly - A simple class to make encoding some disassembly patterns
193 // easier and less verbose.
194 class T1Disassembly<bits<2> op1, bits<8> op2>
195 : T1Encoding<0b101111> {
200 def tNOP : T1pI<(outs), (ins), NoItinerary, "nop", "",
201 [/* For disassembly only; pattern left blank */]>,
202 T1Disassembly<0b11, 0x00>; // A8.6.110
204 def tYIELD : T1pI<(outs), (ins), NoItinerary, "yield", "",
205 [/* For disassembly only; pattern left blank */]>,
206 T1Disassembly<0b11, 0x10>; // A8.6.410
208 def tWFE : T1pI<(outs), (ins), NoItinerary, "wfe", "",
209 [/* For disassembly only; pattern left blank */]>,
210 T1Disassembly<0b11, 0x20>; // A8.6.408
212 def tWFI : T1pI<(outs), (ins), NoItinerary, "wfi", "",
213 [/* For disassembly only; pattern left blank */]>,
214 T1Disassembly<0b11, 0x30>; // A8.6.409
216 def tSEV : T1pI<(outs), (ins), NoItinerary, "sev", "",
217 [/* For disassembly only; pattern left blank */]>,
218 T1Disassembly<0b11, 0x40>; // A8.6.157
220 // The i32imm operand $val can be used by a debugger to store more information
221 // about the breakpoint.
222 def tBKPT : T1I<(outs), (ins i32imm:$val), NoItinerary, "bkpt\t$val",
223 [/* For disassembly only; pattern left blank */]>,
224 T1Disassembly<0b10, {?,?,?,?,?,?,?,?}> {
230 def tSETEND : T1I<(outs), (ins setend_op:$end), NoItinerary, "setend\t$end",
231 []>, T1Encoding<0b101101> {
234 let Inst{9-5} = 0b10010;
237 let Inst{2-0} = 0b000;
240 // Change Processor State is a system instruction -- for disassembly only.
241 def tCPS : T1I<(outs), (ins imod_op:$imod, iflags_op:$iflags),
242 NoItinerary, "cps$imod $iflags",
243 [/* For disassembly only; pattern left blank */]>,
251 let Inst{2-0} = iflags;
254 // For both thumb1 and thumb2.
255 let isNotDuplicable = 1, isCodeGenOnly = 1 in
256 def tPICADD : TIt<(outs GPR:$dst), (ins GPR:$lhs, pclabel:$cp), IIC_iALUr, "",
257 [(set GPR:$dst, (ARMpic_add GPR:$lhs, imm:$cp))]>,
258 T1Special<{0,0,?,?}> {
261 let Inst{6-3} = 0b1111; // Rm = pc
265 // PC relative add (ADR).
266 def tADDrPCi : T1I<(outs tGPR:$dst), (ins t_imm_s4:$rhs), IIC_iALUi,
267 "add\t$dst, pc, $rhs", []>,
268 T1Encoding<{1,0,1,0,0,?}> {
272 let Inst{10-8} = dst;
276 // ADD <Rd>, sp, #<imm8>
277 // This is rematerializable, which is particularly useful for taking the
278 // address of locals.
279 let isReMaterializable = 1 in
280 def tADDrSPi : T1I<(outs tGPR:$dst), (ins GPR:$sp, t_imm_s4:$rhs), IIC_iALUi,
281 "add\t$dst, $sp, $rhs", []>,
282 T1Encoding<{1,0,1,0,1,?}> {
286 let Inst{10-8} = dst;
290 // ADD sp, sp, #<imm7>
291 def tADDspi : TIt<(outs GPR:$dst), (ins GPR:$lhs, t_imm_s4:$rhs), IIC_iALUi,
292 "add\t$dst, $rhs", []>,
293 T1Misc<{0,0,0,0,0,?,?}> {
299 // SUB sp, sp, #<imm7>
300 // FIXME: The encoding and the ASM string don't match up.
301 def tSUBspi : TIt<(outs GPR:$dst), (ins GPR:$lhs, t_imm_s4:$rhs), IIC_iALUi,
302 "sub\t$dst, $rhs", []>,
303 T1Misc<{0,0,0,0,1,?,?}> {
310 def tADDrSP : TIt<(outs GPR:$dst), (ins GPR:$lhs, GPR:$rhs), IIC_iALUr,
311 "add\t$dst, $rhs", []>,
312 T1Special<{0,0,?,?}> {
313 // A8.6.9 Encoding T1
315 let Inst{7} = dst{3};
316 let Inst{6-3} = 0b1101;
317 let Inst{2-0} = dst{2-0};
321 def tADDspr : TIt<(outs GPR:$dst), (ins GPR:$lhs, GPR:$rhs), IIC_iALUr,
322 "add\t$dst, $rhs", []>,
323 T1Special<{0,0,?,?}> {
324 // A8.6.9 Encoding T2
328 let Inst{2-0} = 0b101;
331 //===----------------------------------------------------------------------===//
332 // Control Flow Instructions.
336 let isBranch = 1, isTerminator = 1, isBarrier = 1, isIndirectBranch = 1 in {
337 def tBX : TI<(outs), (ins GPR:$Rm, pred:$p), IIC_Br, "bx${p}\t$Rm", []>,
338 T1Special<{1,1,0,?}> {
342 let Inst{2-0} = 0b000;
346 let isReturn = 1, isTerminator = 1, isBarrier = 1 in {
347 def tBX_RET : tPseudoExpand<(outs), (ins pred:$p), 2, IIC_Br,
348 [(ARMretflag)], (tBX LR, pred:$p)>;
350 // Alternative return instruction used by vararg functions.
351 def tBX_RET_vararg : tPseudoExpand<(outs), (ins tGPR:$Rm, pred:$p),
353 (tBX GPR:$Rm, pred:$p)>;
356 // All calls clobber the non-callee saved registers. SP is marked as a use to
357 // prevent stack-pointer assignments that appear immediately before calls from
358 // potentially appearing dead.
360 // On non-Darwin platforms R9 is callee-saved.
361 Defs = [R0, R1, R2, R3, R12, LR, QQQQ0, QQQQ2, QQQQ3, CPSR, FPSCR],
363 // Also used for Thumb2
364 def tBL : TIx2<0b11110, 0b11, 1,
365 (outs), (ins pred:$p, t_bltarget:$func, variable_ops), IIC_Br,
367 [(ARMtcall tglobaladdr:$func)]>,
368 Requires<[IsThumb, IsNotDarwin]> {
370 let Inst{25-16} = func{20-11};
373 let Inst{10-0} = func{10-0};
376 // ARMv5T and above, also used for Thumb2
377 def tBLXi : TIx2<0b11110, 0b11, 0,
378 (outs), (ins pred:$p, t_blxtarget:$func, variable_ops), IIC_Br,
380 [(ARMcall tglobaladdr:$func)]>,
381 Requires<[IsThumb, HasV5T, IsNotDarwin]> {
383 let Inst{25-16} = func{20-11};
386 let Inst{10-1} = func{10-1};
387 let Inst{0} = 0; // func{0} is assumed zero
390 // Also used for Thumb2
391 def tBLXr : TI<(outs), (ins pred:$p, GPR:$func, variable_ops), IIC_Br,
393 [(ARMtcall GPR:$func)]>,
394 Requires<[IsThumb, HasV5T, IsNotDarwin]>,
395 T1Special<{1,1,1,?}> { // A6.2.3 & A8.6.24;
397 let Inst{6-3} = func;
398 let Inst{2-0} = 0b000;
402 def tBX_CALL : tPseudoInst<(outs), (ins tGPR:$func, variable_ops),
404 [(ARMcall_nolink tGPR:$func)]>,
405 Requires<[IsThumb, IsThumb1Only, IsNotDarwin]>;
409 // On Darwin R9 is call-clobbered.
410 // R7 is marked as a use to prevent frame-pointer assignments from being
411 // moved above / below calls.
412 Defs = [R0, R1, R2, R3, R9, R12, LR, QQQQ0, QQQQ2, QQQQ3, CPSR, FPSCR],
414 // Also used for Thumb2
415 def tBLr9 : tPseudoExpand<(outs), (ins pred:$p, t_bltarget:$func, variable_ops),
416 4, IIC_Br, [(ARMtcall tglobaladdr:$func)],
417 (tBL pred:$p, t_bltarget:$func)>,
418 Requires<[IsThumb, IsDarwin]>;
420 // ARMv5T and above, also used for Thumb2
421 def tBLXi_r9 : tPseudoExpand<(outs), (ins pred:$p, t_blxtarget:$func, variable_ops),
422 4, IIC_Br, [(ARMcall tglobaladdr:$func)],
423 (tBLXi pred:$p, t_blxtarget:$func)>,
424 Requires<[IsThumb, HasV5T, IsDarwin]>;
426 // Also used for Thumb2
427 def tBLXr_r9 : tPseudoExpand<(outs), (ins pred:$p, GPR:$func, variable_ops),
428 2, IIC_Br, [(ARMtcall GPR:$func)],
429 (tBLXr pred:$p, GPR:$func)>,
430 Requires<[IsThumb, HasV5T, IsDarwin]>;
433 def tBXr9_CALL : tPseudoInst<(outs), (ins tGPR:$func, variable_ops),
435 [(ARMcall_nolink tGPR:$func)]>,
436 Requires<[IsThumb, IsThumb1Only, IsDarwin]>;
439 let isBranch = 1, isTerminator = 1, isBarrier = 1 in {
440 let isPredicable = 1 in
441 def tB : T1I<(outs), (ins t_brtarget:$target), IIC_Br,
442 "b\t$target", [(br bb:$target)]>,
443 T1Encoding<{1,1,1,0,0,?}> {
445 let Inst{10-0} = target;
449 // Just a pseudo for a tBL instruction. Needed to let regalloc know about
450 // the clobber of LR.
452 def tBfar : tPseudoExpand<(outs), (ins t_bltarget:$target, pred:$p),
453 4, IIC_Br, [], (tBL pred:$p, t_bltarget:$target)>;
455 def tBR_JTr : tPseudoInst<(outs),
456 (ins tGPR:$target, i32imm:$jt, i32imm:$id),
458 [(ARMbrjt tGPR:$target, tjumptable:$jt, imm:$id)]> {
459 list<Predicate> Predicates = [IsThumb, IsThumb1Only];
463 // FIXME: should be able to write a pattern for ARMBrcond, but can't use
464 // a two-value operand where a dag node expects two operands. :(
465 let isBranch = 1, isTerminator = 1 in
466 def tBcc : T1I<(outs), (ins t_bcctarget:$target, pred:$p), IIC_Br,
468 [/*(ARMbrcond bb:$target, imm:$cc)*/]>,
469 T1BranchCond<{1,1,0,1}> {
473 let Inst{7-0} = target;
476 // Compare and branch on zero / non-zero
477 let isBranch = 1, isTerminator = 1 in {
478 def tCBZ : T1I<(outs), (ins tGPR:$Rn, t_cbtarget:$target), IIC_Br,
479 "cbz\t$Rn, $target", []>,
480 T1Misc<{0,0,?,1,?,?,?}> {
484 let Inst{9} = target{5};
485 let Inst{7-3} = target{4-0};
489 def tCBNZ : T1I<(outs), (ins tGPR:$Rn, t_cbtarget:$target), IIC_Br,
490 "cbnz\t$Rn, $target", []>,
491 T1Misc<{1,0,?,1,?,?,?}> {
495 let Inst{9} = target{5};
496 let Inst{7-3} = target{4-0};
502 let isCall = 1, isTerminator = 1, isReturn = 1, isBarrier = 1 in {
504 let Defs = [R0, R1, R2, R3, R9, R12, QQQQ0, QQQQ2, QQQQ3, PC],
506 // tTAILJMPd: Darwin version uses a Thumb2 branch (no Thumb1 tail calls
507 // on Darwin), so it's in ARMInstrThumb2.td.
508 def tTAILJMPr : tPseudoExpand<(outs), (ins tcGPR:$dst, variable_ops),
510 (tBX GPR:$dst, (ops 14, zero_reg))>,
511 Requires<[IsThumb, IsDarwin]>;
513 // Non-Darwin versions (the difference is R9).
514 let Defs = [R0, R1, R2, R3, R12, QQQQ0, QQQQ2, QQQQ3, PC],
516 def tTAILJMPdND : tPseudoExpand<(outs), (ins t_brtarget:$dst, variable_ops),
518 (tB t_brtarget:$dst)>,
519 Requires<[IsThumb, IsNotDarwin]>;
520 def tTAILJMPrND : tPseudoExpand<(outs), (ins tcGPR:$dst, variable_ops),
522 (tBX GPR:$dst, (ops 14, zero_reg))>,
523 Requires<[IsThumb, IsNotDarwin]>;
528 // A8.6.218 Supervisor Call (Software Interrupt) -- for disassembly only
529 // A8.6.16 B: Encoding T1
530 // If Inst{11-8} == 0b1111 then SEE SVC
531 let isCall = 1, Uses = [SP] in
532 def tSVC : T1pI<(outs), (ins imm0_255:$imm), IIC_Br,
533 "svc", "\t$imm", []>, Encoding16 {
535 let Inst{15-12} = 0b1101;
536 let Inst{11-8} = 0b1111;
540 // The assembler uses 0xDEFE for a trap instruction.
541 let isBarrier = 1, isTerminator = 1 in
542 def tTRAP : TI<(outs), (ins), IIC_Br,
543 "trap", [(trap)]>, Encoding16 {
547 //===----------------------------------------------------------------------===//
548 // Load Store Instructions.
551 // Loads: reg/reg and reg/imm5
552 let canFoldAsLoad = 1, isReMaterializable = 1 in
553 multiclass thumb_ld_rr_ri_enc<bits<3> reg_opc, bits<4> imm_opc,
554 Operand AddrMode_r, Operand AddrMode_i,
555 AddrMode am, InstrItinClass itin_r,
556 InstrItinClass itin_i, string asm,
559 T1pILdStEncode<reg_opc,
560 (outs tGPR:$Rt), (ins AddrMode_r:$addr),
561 am, itin_r, asm, "\t$Rt, $addr",
562 [(set tGPR:$Rt, (opnode AddrMode_r:$addr))]>;
564 T1pILdStEncodeImm<imm_opc, 1 /* Load */,
565 (outs tGPR:$Rt), (ins AddrMode_i:$addr),
566 am, itin_i, asm, "\t$Rt, $addr",
567 [(set tGPR:$Rt, (opnode AddrMode_i:$addr))]>;
569 // Stores: reg/reg and reg/imm5
570 multiclass thumb_st_rr_ri_enc<bits<3> reg_opc, bits<4> imm_opc,
571 Operand AddrMode_r, Operand AddrMode_i,
572 AddrMode am, InstrItinClass itin_r,
573 InstrItinClass itin_i, string asm,
576 T1pILdStEncode<reg_opc,
577 (outs), (ins tGPR:$Rt, AddrMode_r:$addr),
578 am, itin_r, asm, "\t$Rt, $addr",
579 [(opnode tGPR:$Rt, AddrMode_r:$addr)]>;
581 T1pILdStEncodeImm<imm_opc, 0 /* Store */,
582 (outs), (ins tGPR:$Rt, AddrMode_i:$addr),
583 am, itin_i, asm, "\t$Rt, $addr",
584 [(opnode tGPR:$Rt, AddrMode_i:$addr)]>;
588 defm tLDR : thumb_ld_rr_ri_enc<0b100, 0b0110, t_addrmode_rrs4,
589 t_addrmode_is4, AddrModeT1_4,
590 IIC_iLoad_r, IIC_iLoad_i, "ldr",
591 UnOpFrag<(load node:$Src)>>;
594 defm tLDRB : thumb_ld_rr_ri_enc<0b110, 0b0111, t_addrmode_rrs1,
595 t_addrmode_is1, AddrModeT1_1,
596 IIC_iLoad_bh_r, IIC_iLoad_bh_i, "ldrb",
597 UnOpFrag<(zextloadi8 node:$Src)>>;
600 defm tLDRH : thumb_ld_rr_ri_enc<0b101, 0b1000, t_addrmode_rrs2,
601 t_addrmode_is2, AddrModeT1_2,
602 IIC_iLoad_bh_r, IIC_iLoad_bh_i, "ldrh",
603 UnOpFrag<(zextloadi16 node:$Src)>>;
605 let AddedComplexity = 10 in
606 def tLDRSB : // A8.6.80
607 T1pILdStEncode<0b011, (outs tGPR:$dst), (ins t_addrmode_rr:$addr),
608 AddrModeT1_1, IIC_iLoad_bh_r,
609 "ldrsb", "\t$dst, $addr",
610 [(set tGPR:$dst, (sextloadi8 t_addrmode_rr:$addr))]>;
612 let AddedComplexity = 10 in
613 def tLDRSH : // A8.6.84
614 T1pILdStEncode<0b111, (outs tGPR:$dst), (ins t_addrmode_rr:$addr),
615 AddrModeT1_2, IIC_iLoad_bh_r,
616 "ldrsh", "\t$dst, $addr",
617 [(set tGPR:$dst, (sextloadi16 t_addrmode_rr:$addr))]>;
619 let canFoldAsLoad = 1 in
620 def tLDRspi : T1pIs<(outs tGPR:$Rt), (ins t_addrmode_sp:$addr), IIC_iLoad_i,
621 "ldr", "\t$Rt, $addr",
622 [(set tGPR:$Rt, (load t_addrmode_sp:$addr))]>,
627 let Inst{7-0} = addr;
631 // FIXME: Use ldr.n to work around a Darwin assembler bug.
632 let canFoldAsLoad = 1, isReMaterializable = 1, isCodeGenOnly = 1 in
633 def tLDRpci : T1pIs<(outs tGPR:$Rt), (ins t_addrmode_pc:$addr), IIC_iLoad_i,
634 "ldr", ".n\t$Rt, $addr",
635 [(set tGPR:$Rt, (load (ARMWrapper tconstpool:$addr)))]>,
636 T1Encoding<{0,1,0,0,1,?}> {
641 let Inst{7-0} = addr;
644 // FIXME: Remove this entry when the above ldr.n workaround is fixed.
645 // For disassembly use only.
646 def tLDRpciDIS : T1pIs<(outs tGPR:$Rt), (ins t_addrmode_pc:$addr), IIC_iLoad_i,
647 "ldr", "\t$Rt, $addr",
648 [/* disassembly only */]>,
649 T1Encoding<{0,1,0,0,1,?}> {
654 let Inst{7-0} = addr;
657 // A8.6.194 & A8.6.192
658 defm tSTR : thumb_st_rr_ri_enc<0b000, 0b0110, t_addrmode_rrs4,
659 t_addrmode_is4, AddrModeT1_4,
660 IIC_iStore_r, IIC_iStore_i, "str",
661 BinOpFrag<(store node:$LHS, node:$RHS)>>;
663 // A8.6.197 & A8.6.195
664 defm tSTRB : thumb_st_rr_ri_enc<0b010, 0b0111, t_addrmode_rrs1,
665 t_addrmode_is1, AddrModeT1_1,
666 IIC_iStore_bh_r, IIC_iStore_bh_i, "strb",
667 BinOpFrag<(truncstorei8 node:$LHS, node:$RHS)>>;
669 // A8.6.207 & A8.6.205
670 defm tSTRH : thumb_st_rr_ri_enc<0b001, 0b1000, t_addrmode_rrs2,
671 t_addrmode_is2, AddrModeT1_2,
672 IIC_iStore_bh_r, IIC_iStore_bh_i, "strh",
673 BinOpFrag<(truncstorei16 node:$LHS, node:$RHS)>>;
676 def tSTRspi : T1pIs<(outs), (ins tGPR:$Rt, t_addrmode_sp:$addr), IIC_iStore_i,
677 "str", "\t$Rt, $addr",
678 [(store tGPR:$Rt, t_addrmode_sp:$addr)]>,
683 let Inst{7-0} = addr;
686 //===----------------------------------------------------------------------===//
687 // Load / store multiple Instructions.
690 multiclass thumb_ldst_mult<string asm, InstrItinClass itin,
691 InstrItinClass itin_upd, bits<6> T1Enc,
692 bit L_bit, string baseOpc> {
694 T1I<(outs), (ins GPR:$Rn, pred:$p, reglist:$regs, variable_ops),
695 itin, !strconcat(asm, "ia${p}\t$Rn, $regs"), []>,
700 let Inst{7-0} = regs;
704 InstTemplate<AddrModeNone, 0, IndexModeNone, Pseudo, GenericDomain,
705 "$Rn = $wb", itin_upd>,
706 PseudoInstExpansion<(!cast<Instruction>(!strconcat(baseOpc, "IA"))
707 GPR:$Rn, pred:$p, reglist:$regs)> {
709 let OutOperandList = (outs GPR:$wb);
710 let InOperandList = (ins GPR:$Rn, pred:$p, reglist:$regs, variable_ops);
712 let isCodeGenOnly = 1;
714 list<Predicate> Predicates = [IsThumb];
718 // These require base address to be written back or one of the loaded regs.
719 let neverHasSideEffects = 1 in {
721 let mayLoad = 1, hasExtraDefRegAllocReq = 1 in
722 defm tLDM : thumb_ldst_mult<"ldm", IIC_iLoad_m, IIC_iLoad_mu,
723 {1,1,0,0,1,?}, 1, "tLDM">;
725 let mayStore = 1, hasExtraSrcRegAllocReq = 1 in
726 defm tSTM : thumb_ldst_mult<"stm", IIC_iStore_m, IIC_iStore_mu,
727 {1,1,0,0,0,?}, 0, "tSTM">;
729 } // neverHasSideEffects
731 let mayLoad = 1, Uses = [SP], Defs = [SP], hasExtraDefRegAllocReq = 1 in
732 def tPOP : T1I<(outs), (ins pred:$p, reglist:$regs, variable_ops),
734 "pop${p}\t$regs", []>,
735 T1Misc<{1,1,0,?,?,?,?}> {
737 let Inst{8} = regs{15};
738 let Inst{7-0} = regs{7-0};
741 let mayStore = 1, Uses = [SP], Defs = [SP], hasExtraSrcRegAllocReq = 1 in
742 def tPUSH : T1I<(outs), (ins pred:$p, reglist:$regs, variable_ops),
744 "push${p}\t$regs", []>,
745 T1Misc<{0,1,0,?,?,?,?}> {
747 let Inst{8} = regs{14};
748 let Inst{7-0} = regs{7-0};
751 //===----------------------------------------------------------------------===//
752 // Arithmetic Instructions.
755 // Helper classes for encoding T1pI patterns:
756 class T1pIDPEncode<bits<4> opA, dag oops, dag iops, InstrItinClass itin,
757 string opc, string asm, list<dag> pattern>
758 : T1pI<oops, iops, itin, opc, asm, pattern>,
759 T1DataProcessing<opA> {
765 class T1pIMiscEncode<bits<7> opA, dag oops, dag iops, InstrItinClass itin,
766 string opc, string asm, list<dag> pattern>
767 : T1pI<oops, iops, itin, opc, asm, pattern>,
775 // Helper classes for encoding T1sI patterns:
776 class T1sIDPEncode<bits<4> opA, dag oops, dag iops, InstrItinClass itin,
777 string opc, string asm, list<dag> pattern>
778 : T1sI<oops, iops, itin, opc, asm, pattern>,
779 T1DataProcessing<opA> {
785 class T1sIGenEncode<bits<5> opA, dag oops, dag iops, InstrItinClass itin,
786 string opc, string asm, list<dag> pattern>
787 : T1sI<oops, iops, itin, opc, asm, pattern>,
796 class T1sIGenEncodeImm<bits<5> opA, dag oops, dag iops, InstrItinClass itin,
797 string opc, string asm, list<dag> pattern>
798 : T1sI<oops, iops, itin, opc, asm, pattern>,
806 // Helper classes for encoding T1sIt patterns:
807 class T1sItDPEncode<bits<4> opA, dag oops, dag iops, InstrItinClass itin,
808 string opc, string asm, list<dag> pattern>
809 : T1sIt<oops, iops, itin, opc, asm, pattern>,
810 T1DataProcessing<opA> {
816 class T1sItGenEncodeImm<bits<5> opA, dag oops, dag iops, InstrItinClass itin,
817 string opc, string asm, list<dag> pattern>
818 : T1sIt<oops, iops, itin, opc, asm, pattern>,
822 let Inst{10-8} = Rdn;
823 let Inst{7-0} = imm8;
826 // Add with carry register
827 let isCommutable = 1, Uses = [CPSR] in
829 T1sItDPEncode<0b0101, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm), IIC_iALUr,
830 "adc", "\t$Rdn, $Rm",
831 [(set tGPR:$Rdn, (adde tGPR:$Rn, tGPR:$Rm))]>;
834 def tADDi3 : // A8.6.4 T1
835 T1sIGenEncodeImm<0b01110, (outs tGPR:$Rd), (ins tGPR:$Rm, i32imm:$imm3),
837 "add", "\t$Rd, $Rm, $imm3",
838 [(set tGPR:$Rd, (add tGPR:$Rm, imm0_7:$imm3))]> {
840 let Inst{8-6} = imm3;
843 def tADDi8 : // A8.6.4 T2
844 T1sItGenEncodeImm<{1,1,0,?,?}, (outs tGPR:$Rdn), (ins tGPR:$Rn, i32imm:$imm8),
846 "add", "\t$Rdn, $imm8",
847 [(set tGPR:$Rdn, (add tGPR:$Rn, imm8_255:$imm8))]>;
850 let isCommutable = 1 in
851 def tADDrr : // A8.6.6 T1
852 T1sIGenEncode<0b01100, (outs tGPR:$Rd), (ins tGPR:$Rn, tGPR:$Rm),
854 "add", "\t$Rd, $Rn, $Rm",
855 [(set tGPR:$Rd, (add tGPR:$Rn, tGPR:$Rm))]>;
857 let neverHasSideEffects = 1 in
858 def tADDhirr : T1pIt<(outs GPR:$Rdn), (ins GPR:$Rn, GPR:$Rm), IIC_iALUr,
859 "add", "\t$Rdn, $Rm", []>,
860 T1Special<{0,0,?,?}> {
864 let Inst{7} = Rdn{3};
866 let Inst{2-0} = Rdn{2-0};
870 let isCommutable = 1 in
871 def tAND : // A8.6.12
872 T1sItDPEncode<0b0000, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
874 "and", "\t$Rdn, $Rm",
875 [(set tGPR:$Rdn, (and tGPR:$Rn, tGPR:$Rm))]>;
878 def tASRri : // A8.6.14
879 T1sIGenEncodeImm<{0,1,0,?,?}, (outs tGPR:$Rd), (ins tGPR:$Rm, i32imm:$imm5),
881 "asr", "\t$Rd, $Rm, $imm5",
882 [(set tGPR:$Rd, (sra tGPR:$Rm, (i32 imm:$imm5)))]> {
884 let Inst{10-6} = imm5;
888 def tASRrr : // A8.6.15
889 T1sItDPEncode<0b0100, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
891 "asr", "\t$Rdn, $Rm",
892 [(set tGPR:$Rdn, (sra tGPR:$Rn, tGPR:$Rm))]>;
895 def tBIC : // A8.6.20
896 T1sItDPEncode<0b1110, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
898 "bic", "\t$Rdn, $Rm",
899 [(set tGPR:$Rdn, (and tGPR:$Rn, (not tGPR:$Rm)))]>;
902 let isCompare = 1, Defs = [CPSR] in {
903 //FIXME: Disable CMN, as CCodes are backwards from compare expectations
904 // Compare-to-zero still works out, just not the relationals
905 //def tCMN : // A8.6.33
906 // T1pIDPEncode<0b1011, (outs), (ins tGPR:$lhs, tGPR:$rhs),
908 // "cmn", "\t$lhs, $rhs",
909 // [(ARMcmp tGPR:$lhs, (ineg tGPR:$rhs))]>;
911 def tCMNz : // A8.6.33
912 T1pIDPEncode<0b1011, (outs), (ins tGPR:$Rn, tGPR:$Rm),
915 [(ARMcmpZ tGPR:$Rn, (ineg tGPR:$Rm))]>;
917 } // isCompare = 1, Defs = [CPSR]
920 let isCompare = 1, Defs = [CPSR] in {
921 def tCMPi8 : T1pI<(outs), (ins tGPR:$Rn, i32imm:$imm8), IIC_iCMPi,
922 "cmp", "\t$Rn, $imm8",
923 [(ARMcmp tGPR:$Rn, imm0_255:$imm8)]>,
924 T1General<{1,0,1,?,?}> {
929 let Inst{7-0} = imm8;
933 def tCMPr : // A8.6.36 T1
934 T1pIDPEncode<0b1010, (outs), (ins tGPR:$Rn, tGPR:$Rm),
937 [(ARMcmp tGPR:$Rn, tGPR:$Rm)]>;
939 def tCMPhir : T1pI<(outs), (ins GPR:$Rn, GPR:$Rm), IIC_iCMPr,
940 "cmp", "\t$Rn, $Rm", []>,
941 T1Special<{0,1,?,?}> {
947 let Inst{2-0} = Rn{2-0};
949 } // isCompare = 1, Defs = [CPSR]
953 let isCommutable = 1 in
954 def tEOR : // A8.6.45
955 T1sItDPEncode<0b0001, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
957 "eor", "\t$Rdn, $Rm",
958 [(set tGPR:$Rdn, (xor tGPR:$Rn, tGPR:$Rm))]>;
961 def tLSLri : // A8.6.88
962 T1sIGenEncodeImm<{0,0,0,?,?}, (outs tGPR:$Rd), (ins tGPR:$Rm, i32imm:$imm5),
964 "lsl", "\t$Rd, $Rm, $imm5",
965 [(set tGPR:$Rd, (shl tGPR:$Rm, (i32 imm:$imm5)))]> {
967 let Inst{10-6} = imm5;
971 def tLSLrr : // A8.6.89
972 T1sItDPEncode<0b0010, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
974 "lsl", "\t$Rdn, $Rm",
975 [(set tGPR:$Rdn, (shl tGPR:$Rn, tGPR:$Rm))]>;
978 def tLSRri : // A8.6.90
979 T1sIGenEncodeImm<{0,0,1,?,?}, (outs tGPR:$Rd), (ins tGPR:$Rm, i32imm:$imm5),
981 "lsr", "\t$Rd, $Rm, $imm5",
982 [(set tGPR:$Rd, (srl tGPR:$Rm, (i32 imm:$imm5)))]> {
984 let Inst{10-6} = imm5;
988 def tLSRrr : // A8.6.91
989 T1sItDPEncode<0b0011, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
991 "lsr", "\t$Rdn, $Rm",
992 [(set tGPR:$Rdn, (srl tGPR:$Rn, tGPR:$Rm))]>;
996 def tMOVi8 : T1sI<(outs tGPR:$Rd), (ins imm0_255:$imm8), IIC_iMOVi,
997 "mov", "\t$Rd, $imm8",
998 [(set tGPR:$Rd, imm0_255:$imm8)]>,
999 T1General<{1,0,0,?,?}> {
1003 let Inst{10-8} = Rd;
1004 let Inst{7-0} = imm8;
1007 // A7-73: MOV(2) - mov setting flag.
1009 let neverHasSideEffects = 1 in {
1010 def tMOVr : Thumb1pI<(outs GPR:$Rd), (ins GPR:$Rm), AddrModeNone,
1012 "mov", "\t$Rd, $Rm", "", []>,
1013 T1Special<{1,0,?,?}> {
1017 let Inst{7} = Rd{3};
1019 let Inst{2-0} = Rd{2-0};
1021 let Defs = [CPSR] in
1022 def tMOVSr : T1I<(outs tGPR:$Rd), (ins tGPR:$Rm), IIC_iMOVr,
1023 "movs\t$Rd, $Rm", []>, Encoding16 {
1027 let Inst{15-6} = 0b0000000000;
1031 } // neverHasSideEffects
1033 // Multiply register
1034 let isCommutable = 1 in
1035 def tMUL : // A8.6.105 T1
1036 T1sItDPEncode<0b1101, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
1038 "mul", "\t$Rdn, $Rm, $Rdn",
1039 [(set tGPR:$Rdn, (mul tGPR:$Rn, tGPR:$Rm))]>;
1041 // Move inverse register
1042 def tMVN : // A8.6.107
1043 T1sIDPEncode<0b1111, (outs tGPR:$Rd), (ins tGPR:$Rn), IIC_iMVNr,
1044 "mvn", "\t$Rd, $Rn",
1045 [(set tGPR:$Rd, (not tGPR:$Rn))]>;
1047 // Bitwise or register
1048 let isCommutable = 1 in
1049 def tORR : // A8.6.114
1050 T1sItDPEncode<0b1100, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
1052 "orr", "\t$Rdn, $Rm",
1053 [(set tGPR:$Rdn, (or tGPR:$Rn, tGPR:$Rm))]>;
1056 def tREV : // A8.6.134
1057 T1pIMiscEncode<{1,0,1,0,0,0,?}, (outs tGPR:$Rd), (ins tGPR:$Rm),
1059 "rev", "\t$Rd, $Rm",
1060 [(set tGPR:$Rd, (bswap tGPR:$Rm))]>,
1061 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1063 def tREV16 : // A8.6.135
1064 T1pIMiscEncode<{1,0,1,0,0,1,?}, (outs tGPR:$Rd), (ins tGPR:$Rm),
1066 "rev16", "\t$Rd, $Rm",
1067 [(set tGPR:$Rd, (rotr (bswap tGPR:$Rm), (i32 16)))]>,
1068 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1070 def tREVSH : // A8.6.136
1071 T1pIMiscEncode<{1,0,1,0,1,1,?}, (outs tGPR:$Rd), (ins tGPR:$Rm),
1073 "revsh", "\t$Rd, $Rm",
1074 [(set tGPR:$Rd, (sra (bswap tGPR:$Rm), (i32 16)))]>,
1075 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1077 // Rotate right register
1078 def tROR : // A8.6.139
1079 T1sItDPEncode<0b0111, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
1081 "ror", "\t$Rdn, $Rm",
1082 [(set tGPR:$Rdn, (rotr tGPR:$Rn, tGPR:$Rm))]>;
1085 def tRSB : // A8.6.141
1086 T1sIDPEncode<0b1001, (outs tGPR:$Rd), (ins tGPR:$Rn),
1088 "rsb", "\t$Rd, $Rn, #0",
1089 [(set tGPR:$Rd, (ineg tGPR:$Rn))]>;
1091 // Subtract with carry register
1092 let Uses = [CPSR] in
1093 def tSBC : // A8.6.151
1094 T1sItDPEncode<0b0110, (outs tGPR:$Rdn), (ins tGPR:$Rn, tGPR:$Rm),
1096 "sbc", "\t$Rdn, $Rm",
1097 [(set tGPR:$Rdn, (sube tGPR:$Rn, tGPR:$Rm))]>;
1099 // Subtract immediate
1100 def tSUBi3 : // A8.6.210 T1
1101 T1sIGenEncodeImm<0b01111, (outs tGPR:$Rd), (ins tGPR:$Rm, i32imm:$imm3),
1103 "sub", "\t$Rd, $Rm, $imm3",
1104 [(set tGPR:$Rd, (add tGPR:$Rm, imm0_7_neg:$imm3))]> {
1106 let Inst{8-6} = imm3;
1109 def tSUBi8 : // A8.6.210 T2
1110 T1sItGenEncodeImm<{1,1,1,?,?}, (outs tGPR:$Rdn), (ins tGPR:$Rn, i32imm:$imm8),
1112 "sub", "\t$Rdn, $imm8",
1113 [(set tGPR:$Rdn, (add tGPR:$Rn, imm8_255_neg:$imm8))]>;
1115 // Subtract register
1116 def tSUBrr : // A8.6.212
1117 T1sIGenEncode<0b01101, (outs tGPR:$Rd), (ins tGPR:$Rn, tGPR:$Rm),
1119 "sub", "\t$Rd, $Rn, $Rm",
1120 [(set tGPR:$Rd, (sub tGPR:$Rn, tGPR:$Rm))]>;
1122 // TODO: A7-96: STMIA - store multiple.
1125 def tSXTB : // A8.6.222
1126 T1pIMiscEncode<{0,0,1,0,0,1,?}, (outs tGPR:$Rd), (ins tGPR:$Rm),
1128 "sxtb", "\t$Rd, $Rm",
1129 [(set tGPR:$Rd, (sext_inreg tGPR:$Rm, i8))]>,
1130 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1132 // Sign-extend short
1133 def tSXTH : // A8.6.224
1134 T1pIMiscEncode<{0,0,1,0,0,0,?}, (outs tGPR:$Rd), (ins tGPR:$Rm),
1136 "sxth", "\t$Rd, $Rm",
1137 [(set tGPR:$Rd, (sext_inreg tGPR:$Rm, i16))]>,
1138 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1141 let isCompare = 1, isCommutable = 1, Defs = [CPSR] in
1142 def tTST : // A8.6.230
1143 T1pIDPEncode<0b1000, (outs), (ins tGPR:$Rn, tGPR:$Rm), IIC_iTSTr,
1144 "tst", "\t$Rn, $Rm",
1145 [(ARMcmpZ (and_su tGPR:$Rn, tGPR:$Rm), 0)]>;
1148 def tUXTB : // A8.6.262
1149 T1pIMiscEncode<{0,0,1,0,1,1,?}, (outs tGPR:$Rd), (ins tGPR:$Rm),
1151 "uxtb", "\t$Rd, $Rm",
1152 [(set tGPR:$Rd, (and tGPR:$Rm, 0xFF))]>,
1153 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1155 // Zero-extend short
1156 def tUXTH : // A8.6.264
1157 T1pIMiscEncode<{0,0,1,0,1,0,?}, (outs tGPR:$Rd), (ins tGPR:$Rm),
1159 "uxth", "\t$Rd, $Rm",
1160 [(set tGPR:$Rd, (and tGPR:$Rm, 0xFFFF))]>,
1161 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1163 // Conditional move tMOVCCr - Used to implement the Thumb SELECT_CC operation.
1164 // Expanded after instruction selection into a branch sequence.
1165 let usesCustomInserter = 1 in // Expanded after instruction selection.
1166 def tMOVCCr_pseudo :
1167 PseudoInst<(outs tGPR:$dst), (ins tGPR:$false, tGPR:$true, pred:$cc),
1169 [/*(set tGPR:$dst, (ARMcmov tGPR:$false, tGPR:$true, imm:$cc))*/]>;
1171 // tLEApcrel - Load a pc-relative address into a register without offending the
1174 def tADR : T1I<(outs tGPR:$Rd), (ins t_adrlabel:$addr, pred:$p),
1175 IIC_iALUi, "adr{$p}\t$Rd, #$addr", []>,
1176 T1Encoding<{1,0,1,0,0,?}> {
1179 let Inst{10-8} = Rd;
1180 let Inst{7-0} = addr;
1183 let neverHasSideEffects = 1, isReMaterializable = 1 in
1184 def tLEApcrel : tPseudoInst<(outs tGPR:$Rd), (ins i32imm:$label, pred:$p),
1187 def tLEApcrelJT : tPseudoInst<(outs tGPR:$Rd),
1188 (ins i32imm:$label, nohash_imm:$id, pred:$p),
1191 //===----------------------------------------------------------------------===//
1195 // __aeabi_read_tp preserves the registers r1-r3.
1196 // This is a pseudo inst so that we can get the encoding right,
1197 // complete with fixup for the aeabi_read_tp function.
1198 let isCall = 1, Defs = [R0, R12, LR, CPSR], Uses = [SP] in
1199 def tTPsoft : tPseudoInst<(outs), (ins), 4, IIC_Br,
1200 [(set R0, ARMthread_pointer)]>;
1202 //===----------------------------------------------------------------------===//
1203 // SJLJ Exception handling intrinsics
1206 // eh_sjlj_setjmp() is an instruction sequence to store the return address and
1207 // save #0 in R0 for the non-longjmp case. Since by its nature we may be coming
1208 // from some other function to get here, and we're using the stack frame for the
1209 // containing function to save/restore registers, we can't keep anything live in
1210 // regs across the eh_sjlj_setjmp(), else it will almost certainly have been
1211 // tromped upon when we get here from a longjmp(). We force everything out of
1212 // registers except for our own input by listing the relevant registers in
1213 // Defs. By doing so, we also cause the prologue/epilogue code to actively
1214 // preserve all of the callee-saved resgisters, which is exactly what we want.
1215 // $val is a scratch register for our use.
1216 let Defs = [ R0, R1, R2, R3, R4, R5, R6, R7, R12, CPSR ],
1217 hasSideEffects = 1, isBarrier = 1, isCodeGenOnly = 1 in
1218 def tInt_eh_sjlj_setjmp : ThumbXI<(outs),(ins tGPR:$src, tGPR:$val),
1219 AddrModeNone, 0, NoItinerary, "","",
1220 [(set R0, (ARMeh_sjlj_setjmp tGPR:$src, tGPR:$val))]>;
1222 // FIXME: Non-Darwin version(s)
1223 let isBarrier = 1, hasSideEffects = 1, isTerminator = 1, isCodeGenOnly = 1,
1224 Defs = [ R7, LR, SP ] in
1225 def tInt_eh_sjlj_longjmp : XI<(outs), (ins GPR:$src, GPR:$scratch),
1226 AddrModeNone, 0, IndexModeNone,
1227 Pseudo, NoItinerary, "", "",
1228 [(ARMeh_sjlj_longjmp GPR:$src, GPR:$scratch)]>,
1229 Requires<[IsThumb, IsDarwin]>;
1231 //===----------------------------------------------------------------------===//
1232 // Non-Instruction Patterns
1236 def : T1Pat<(ARMcmpZ tGPR:$Rn, imm0_255:$imm8),
1237 (tCMPi8 tGPR:$Rn, imm0_255:$imm8)>;
1238 def : T1Pat<(ARMcmpZ tGPR:$Rn, tGPR:$Rm),
1239 (tCMPr tGPR:$Rn, tGPR:$Rm)>;
1242 def : T1Pat<(addc tGPR:$lhs, imm0_7:$rhs),
1243 (tADDi3 tGPR:$lhs, imm0_7:$rhs)>;
1244 def : T1Pat<(addc tGPR:$lhs, imm8_255:$rhs),
1245 (tADDi8 tGPR:$lhs, imm8_255:$rhs)>;
1246 def : T1Pat<(addc tGPR:$lhs, tGPR:$rhs),
1247 (tADDrr tGPR:$lhs, tGPR:$rhs)>;
1249 // Subtract with carry
1250 def : T1Pat<(addc tGPR:$lhs, imm0_7_neg:$rhs),
1251 (tSUBi3 tGPR:$lhs, imm0_7_neg:$rhs)>;
1252 def : T1Pat<(addc tGPR:$lhs, imm8_255_neg:$rhs),
1253 (tSUBi8 tGPR:$lhs, imm8_255_neg:$rhs)>;
1254 def : T1Pat<(subc tGPR:$lhs, tGPR:$rhs),
1255 (tSUBrr tGPR:$lhs, tGPR:$rhs)>;
1257 // ConstantPool, GlobalAddress
1258 def : T1Pat<(ARMWrapper tglobaladdr :$dst), (tLEApcrel tglobaladdr :$dst)>;
1259 def : T1Pat<(ARMWrapper tconstpool :$dst), (tLEApcrel tconstpool :$dst)>;
1262 def : T1Pat<(ARMWrapperJT tjumptable:$dst, imm:$id),
1263 (tLEApcrelJT tjumptable:$dst, imm:$id)>;
1266 def : T1Pat<(ARMtcall texternalsym:$func), (tBL texternalsym:$func)>,
1267 Requires<[IsThumb, IsNotDarwin]>;
1268 def : T1Pat<(ARMtcall texternalsym:$func), (tBLr9 texternalsym:$func)>,
1269 Requires<[IsThumb, IsDarwin]>;
1271 def : Tv5Pat<(ARMcall texternalsym:$func), (tBLXi texternalsym:$func)>,
1272 Requires<[IsThumb, HasV5T, IsNotDarwin]>;
1273 def : Tv5Pat<(ARMcall texternalsym:$func), (tBLXi_r9 texternalsym:$func)>,
1274 Requires<[IsThumb, HasV5T, IsDarwin]>;
1276 // Indirect calls to ARM routines
1277 def : Tv5Pat<(ARMcall GPR:$dst), (tBLXr GPR:$dst)>,
1278 Requires<[IsThumb, HasV5T, IsNotDarwin]>;
1279 def : Tv5Pat<(ARMcall GPR:$dst), (tBLXr_r9 GPR:$dst)>,
1280 Requires<[IsThumb, HasV5T, IsDarwin]>;
1282 // zextload i1 -> zextload i8
1283 def : T1Pat<(zextloadi1 t_addrmode_rrs1:$addr),
1284 (tLDRBr t_addrmode_rrs1:$addr)>;
1285 def : T1Pat<(zextloadi1 t_addrmode_is1:$addr),
1286 (tLDRBi t_addrmode_is1:$addr)>;
1288 // extload -> zextload
1289 def : T1Pat<(extloadi1 t_addrmode_rrs1:$addr), (tLDRBr t_addrmode_rrs1:$addr)>;
1290 def : T1Pat<(extloadi1 t_addrmode_is1:$addr), (tLDRBi t_addrmode_is1:$addr)>;
1291 def : T1Pat<(extloadi8 t_addrmode_rrs1:$addr), (tLDRBr t_addrmode_rrs1:$addr)>;
1292 def : T1Pat<(extloadi8 t_addrmode_is1:$addr), (tLDRBi t_addrmode_is1:$addr)>;
1293 def : T1Pat<(extloadi16 t_addrmode_rrs2:$addr), (tLDRHr t_addrmode_rrs2:$addr)>;
1294 def : T1Pat<(extloadi16 t_addrmode_is2:$addr), (tLDRHi t_addrmode_is2:$addr)>;
1296 // If it's impossible to use [r,r] address mode for sextload, select to
1297 // ldr{b|h} + sxt{b|h} instead.
1298 def : T1Pat<(sextloadi8 t_addrmode_is1:$addr),
1299 (tSXTB (tLDRBi t_addrmode_is1:$addr))>,
1300 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1301 def : T1Pat<(sextloadi8 t_addrmode_rrs1:$addr),
1302 (tSXTB (tLDRBr t_addrmode_rrs1:$addr))>,
1303 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1304 def : T1Pat<(sextloadi16 t_addrmode_is2:$addr),
1305 (tSXTH (tLDRHi t_addrmode_is2:$addr))>,
1306 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1307 def : T1Pat<(sextloadi16 t_addrmode_rrs2:$addr),
1308 (tSXTH (tLDRHr t_addrmode_rrs2:$addr))>,
1309 Requires<[IsThumb, IsThumb1Only, HasV6]>;
1311 def : T1Pat<(sextloadi8 t_addrmode_rrs1:$addr),
1312 (tASRri (tLSLri (tLDRBr t_addrmode_rrs1:$addr), 24), 24)>;
1313 def : T1Pat<(sextloadi8 t_addrmode_is1:$addr),
1314 (tASRri (tLSLri (tLDRBi t_addrmode_is1:$addr), 24), 24)>;
1315 def : T1Pat<(sextloadi16 t_addrmode_rrs2:$addr),
1316 (tASRri (tLSLri (tLDRHr t_addrmode_rrs2:$addr), 16), 16)>;
1317 def : T1Pat<(sextloadi16 t_addrmode_is2:$addr),
1318 (tASRri (tLSLri (tLDRHi t_addrmode_is2:$addr), 16), 16)>;
1320 // Large immediate handling.
1323 def : T1Pat<(i32 thumb_immshifted:$src),
1324 (tLSLri (tMOVi8 (thumb_immshifted_val imm:$src)),
1325 (thumb_immshifted_shamt imm:$src))>;
1327 def : T1Pat<(i32 imm0_255_comp:$src),
1328 (tMVN (tMOVi8 (imm_comp_XFORM imm:$src)))>;
1330 // Pseudo instruction that combines ldr from constpool and add pc. This should
1331 // be expanded into two instructions late to allow if-conversion and
1333 let isReMaterializable = 1 in
1334 def tLDRpci_pic : PseudoInst<(outs GPR:$dst), (ins i32imm:$addr, pclabel:$cp),
1336 [(set GPR:$dst, (ARMpic_add (load (ARMWrapper tconstpool:$addr)),
1338 Requires<[IsThumb, IsThumb1Only]>;
1340 // Pseudo-instruction for merged POP and return.
1341 // FIXME: remove when we have a way to marking a MI with these properties.
1342 let isReturn = 1, isTerminator = 1, isBarrier = 1, mayLoad = 1,
1343 hasExtraDefRegAllocReq = 1 in
1344 def tPOP_RET : tPseudoExpand<(outs), (ins pred:$p, reglist:$regs, variable_ops),
1346 (tPOP pred:$p, reglist:$regs)>;
1348 // Indirect branch using "mov pc, $Rm"
1349 let isBranch = 1, isTerminator = 1, isBarrier = 1, isIndirectBranch = 1 in {
1350 def tBRIND : tPseudoExpand<(outs), (ins GPR:$Rm, pred:$p),
1351 2, IIC_Br, [(brind GPR:$Rm)],
1352 (tMOVr PC, GPR:$Rm, pred:$p)>;