1 //===- ARMInstrThumb.td - Thumb support for ARM ---------------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file was developed by Chris Lattner and is distributed under the
6 // University of Illinois Open Source 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 // TI - Thumb instruction.
23 // ThumbPat - Same as Pat<>, but requires that the compiler be in Thumb mode.
24 class ThumbPat<dag pattern, dag result> : Pat<pattern, result> {
25 list<Predicate> Predicates = [IsThumb];
28 class ThumbV5Pat<dag pattern, dag result> : Pat<pattern, result> {
29 list<Predicate> Predicates = [IsThumb, HasV5T];
32 class ThumbI<dag ops, AddrMode am, SizeFlagVal sz,
33 string asm, string cstr, list<dag> pattern>
34 // FIXME: Set all opcodes to 0 for now.
35 : InstARM<0, am, sz, IndexModeNone, cstr> {
36 let OperandList = ops;
38 let Pattern = pattern;
39 list<Predicate> Predicates = [IsThumb];
42 class TI<dag ops, string asm, list<dag> pattern>
43 : ThumbI<ops, AddrModeNone, Size2Bytes, asm, "", pattern>;
44 class TI1<dag ops, string asm, list<dag> pattern>
45 : ThumbI<ops, AddrModeT1, Size2Bytes, asm, "", pattern>;
46 class TI2<dag ops, string asm, list<dag> pattern>
47 : ThumbI<ops, AddrModeT2, Size2Bytes, asm, "", pattern>;
48 class TI4<dag ops, string asm, list<dag> pattern>
49 : ThumbI<ops, AddrModeT4, Size2Bytes, asm, "", pattern>;
50 class TIs<dag ops, string asm, list<dag> pattern>
51 : ThumbI<ops, AddrModeTs, Size2Bytes, asm, "", pattern>;
53 // Two-address instructions
54 class TIt<dag ops, string asm, list<dag> pattern>
55 : ThumbI<ops, AddrModeNone, Size2Bytes, asm, "$lhs = $dst", pattern>;
57 // BL, BLX(1) are translated by assembler into two instructions
58 class TIx2<dag ops, string asm, list<dag> pattern>
59 : ThumbI<ops, AddrModeNone, Size4Bytes, asm, "", pattern>;
62 class TJTI<dag ops, string asm, list<dag> pattern>
63 : ThumbI<ops, AddrModeNone, SizeSpecial, asm, "", pattern>;
65 def imm_neg_XFORM : SDNodeXForm<imm, [{
66 return CurDAG->getTargetConstant(-(int)N->getValue(), MVT::i32);
68 def imm_comp_XFORM : SDNodeXForm<imm, [{
69 return CurDAG->getTargetConstant(~((uint32_t)N->getValue()), MVT::i32);
73 /// imm0_7 predicate - True if the 32-bit immediate is in the range [0,7].
74 def imm0_7 : PatLeaf<(i32 imm), [{
75 return (uint32_t)N->getValue() < 8;
77 def imm0_7_neg : PatLeaf<(i32 imm), [{
78 return (uint32_t)-N->getValue() < 8;
81 def imm0_255 : PatLeaf<(i32 imm), [{
82 return (uint32_t)N->getValue() < 256;
84 def imm0_255_comp : PatLeaf<(i32 imm), [{
85 return ~((uint32_t)N->getValue()) < 256;
88 def imm8_255 : PatLeaf<(i32 imm), [{
89 return (uint32_t)N->getValue() >= 8 && (uint32_t)N->getValue() < 256;
91 def imm8_255_neg : PatLeaf<(i32 imm), [{
92 unsigned Val = -N->getValue();
93 return Val >= 8 && Val < 256;
96 // Break imm's up into two pieces: an immediate + a left shift.
97 // This uses thumb_immshifted to match and thumb_immshifted_val and
98 // thumb_immshifted_shamt to get the val/shift pieces.
99 def thumb_immshifted : PatLeaf<(imm), [{
100 return ARM_AM::isThumbImmShiftedVal((unsigned)N->getValue());
103 def thumb_immshifted_val : SDNodeXForm<imm, [{
104 unsigned V = ARM_AM::getThumbImmNonShiftedVal((unsigned)N->getValue());
105 return CurDAG->getTargetConstant(V, MVT::i32);
108 def thumb_immshifted_shamt : SDNodeXForm<imm, [{
109 unsigned V = ARM_AM::getThumbImmValShift((unsigned)N->getValue());
110 return CurDAG->getTargetConstant(V, MVT::i32);
113 // Define Thumb specific addressing modes.
115 // t_addrmode_rr := reg + reg
117 def t_addrmode_rr : Operand<i32>,
118 ComplexPattern<i32, 2, "SelectThumbAddrModeRR", []> {
119 let PrintMethod = "printThumbAddrModeRROperand";
120 let MIOperandInfo = (ops GPR:$base, GPR:$offsreg);
123 // t_addrmode_s4 := reg + reg
126 def t_addrmode_s4 : Operand<i32>,
127 ComplexPattern<i32, 3, "SelectThumbAddrModeS4", []> {
128 let PrintMethod = "printThumbAddrModeS4Operand";
129 let MIOperandInfo = (ops GPR:$base, i32imm:$offsimm, GPR:$offsreg);
132 // t_addrmode_s2 := reg + reg
135 def t_addrmode_s2 : Operand<i32>,
136 ComplexPattern<i32, 3, "SelectThumbAddrModeS2", []> {
137 let PrintMethod = "printThumbAddrModeS2Operand";
138 let MIOperandInfo = (ops GPR:$base, i32imm:$offsimm, GPR:$offsreg);
141 // t_addrmode_s1 := reg + reg
144 def t_addrmode_s1 : Operand<i32>,
145 ComplexPattern<i32, 3, "SelectThumbAddrModeS1", []> {
146 let PrintMethod = "printThumbAddrModeS1Operand";
147 let MIOperandInfo = (ops GPR:$base, i32imm:$offsimm, GPR:$offsreg);
150 // t_addrmode_sp := sp + imm8 * 4
152 def t_addrmode_sp : Operand<i32>,
153 ComplexPattern<i32, 2, "SelectThumbAddrModeSP", []> {
154 let PrintMethod = "printThumbAddrModeSPOperand";
155 let MIOperandInfo = (ops GPR:$base, i32imm:$offsimm);
158 //===----------------------------------------------------------------------===//
159 // Miscellaneous Instructions.
162 def tADJCALLSTACKUP :
163 PseudoInst<(ops i32imm:$amt),
164 "@ tADJCALLSTACKUP $amt",
165 [(ARMcallseq_end imm:$amt)]>, Imp<[SP],[SP]>, Requires<[IsThumb]>;
167 def tADJCALLSTACKDOWN :
168 PseudoInst<(ops i32imm:$amt),
169 "@ tADJCALLSTACKDOWN $amt",
170 [(ARMcallseq_start imm:$amt)]>, Imp<[SP],[SP]>, Requires<[IsThumb]>;
172 def tPICADD : TIt<(ops GPR:$dst, GPR:$lhs, pclabel:$cp),
173 "$cp:\n\tadd $dst, pc",
174 [(set GPR:$dst, (ARMpic_add GPR:$lhs, imm:$cp))]>;
176 //===----------------------------------------------------------------------===//
177 // Control Flow Instructions.
180 let isReturn = 1, isTerminator = 1 in {
181 def tBX_RET : TI<(ops), "bx lr", [(ARMretflag)]>;
182 // Alternative return instruction used by vararg functions.
183 def tBX_RET_vararg : TI<(ops GPR:$dst), "bx $dst", []>;
186 // FIXME: remove when we have a way to marking a MI with these properties.
187 let isLoad = 1, isReturn = 1, isTerminator = 1 in
188 def tPOP_RET : TI<(ops reglist:$dst1, variable_ops),
191 let isCall = 1, noResults = 1,
192 Defs = [R0, R1, R2, R3, LR,
193 D0, D1, D2, D3, D4, D5, D6, D7] in {
194 def tBL : TIx2<(ops i32imm:$func, variable_ops),
196 [(ARMtcall tglobaladdr:$func)]>;
198 def tBLXi : TIx2<(ops i32imm:$func, variable_ops),
200 [(ARMcall tglobaladdr:$func)]>, Requires<[HasV5T]>;
201 def tBLXr : TI<(ops GPR:$dst, variable_ops),
203 [(ARMtcall GPR:$dst)]>, Requires<[HasV5T]>;
205 def tBX : TIx2<(ops GPR:$dst, variable_ops),
206 "cpy lr, pc\n\tbx $dst",
207 [(ARMcall_nolink GPR:$dst)]>;
210 let isBranch = 1, isTerminator = 1, isBarrier = 1 in {
211 def tB : TI<(ops brtarget:$dst), "b $dst", [(br bb:$dst)]>;
214 def tBfar : TIx2<(ops brtarget:$dst), "bl $dst\t@ far jump", []>;
216 def tBR_JTr : TJTI<(ops GPR:$dst, jtblock_operand:$jt, i32imm:$id),
217 "cpy pc, $dst \n\t.align\t2\n$jt",
218 [(ARMbrjt GPR:$dst, tjumptable:$jt, imm:$id)]>;
221 let isBranch = 1, isTerminator = 1, noResults = 1, isBarrier = 1 in
222 def tBcc : TI<(ops brtarget:$dst, ccop:$cc), "b$cc $dst",
223 [(ARMbrcond bb:$dst, imm:$cc)]>;
225 //===----------------------------------------------------------------------===//
226 // Load Store Instructions.
230 def tLDR : TI4<(ops GPR:$dst, t_addrmode_s4:$addr),
232 [(set GPR:$dst, (load t_addrmode_s4:$addr))]>;
234 def tLDRB : TI1<(ops GPR:$dst, t_addrmode_s1:$addr),
236 [(set GPR:$dst, (zextloadi8 t_addrmode_s1:$addr))]>;
238 def tLDRH : TI2<(ops GPR:$dst, t_addrmode_s2:$addr),
240 [(set GPR:$dst, (zextloadi16 t_addrmode_s2:$addr))]>;
242 def tLDRSB : TI1<(ops GPR:$dst, t_addrmode_rr:$addr),
244 [(set GPR:$dst, (sextloadi8 t_addrmode_rr:$addr))]>;
246 def tLDRSH : TI2<(ops GPR:$dst, t_addrmode_rr:$addr),
248 [(set GPR:$dst, (sextloadi16 t_addrmode_rr:$addr))]>;
250 def tLDRspi : TIs<(ops GPR:$dst, t_addrmode_sp:$addr),
252 [(set GPR:$dst, (load t_addrmode_sp:$addr))]>;
254 // Special instruction for restore. It cannot clobber condition register
255 // when it's expanded by eliminateCallFramePseudoInstr().
256 def tRestore : TIs<(ops GPR:$dst, t_addrmode_sp:$addr),
257 "ldr $dst, $addr", []>;
260 def tLDRpci : TIs<(ops GPR:$dst, i32imm:$addr),
262 [(set GPR:$dst, (load (ARMWrapper tconstpool:$addr)))]>;
264 // Special LDR for loads from non-pc-relative constpools.
265 let isReMaterializable = 1 in
266 def tLDRcp : TIs<(ops GPR:$dst, i32imm:$addr),
267 "ldr $dst, $addr", []>;
271 def tSTR : TI4<(ops GPR:$src, t_addrmode_s4:$addr),
273 [(store GPR:$src, t_addrmode_s4:$addr)]>;
275 def tSTRB : TI1<(ops GPR:$src, t_addrmode_s1:$addr),
277 [(truncstorei8 GPR:$src, t_addrmode_s1:$addr)]>;
279 def tSTRH : TI2<(ops GPR:$src, t_addrmode_s2:$addr),
281 [(truncstorei16 GPR:$src, t_addrmode_s2:$addr)]>;
283 def tSTRspi : TIs<(ops GPR:$src, t_addrmode_sp:$addr),
285 [(store GPR:$src, t_addrmode_sp:$addr)]>;
287 // Special instruction for spill. It cannot clobber condition register
288 // when it's expanded by eliminateCallFramePseudoInstr().
289 def tSpill : TIs<(ops GPR:$src, t_addrmode_sp:$addr),
290 "str $src, $addr", []>;
293 //===----------------------------------------------------------------------===//
294 // Load / store multiple Instructions.
297 // TODO: A7-44: LDMIA - load multiple
300 def tPOP : TI<(ops reglist:$dst1, variable_ops),
304 def tPUSH : TI<(ops reglist:$src1, variable_ops),
307 //===----------------------------------------------------------------------===//
308 // Arithmetic Instructions.
312 def tADC : TIt<(ops GPR:$dst, GPR:$lhs, GPR:$rhs),
314 [(set GPR:$dst, (adde GPR:$lhs, GPR:$rhs))]>;
316 def tADDS : TI<(ops GPR:$dst, GPR:$lhs, GPR:$rhs),
317 "add $dst, $lhs, $rhs",
318 [(set GPR:$dst, (addc GPR:$lhs, GPR:$rhs))]>;
321 def tADDi3 : TI<(ops GPR:$dst, GPR:$lhs, i32imm:$rhs),
322 "add $dst, $lhs, $rhs",
323 [(set GPR:$dst, (add GPR:$lhs, imm0_7:$rhs))]>;
325 def tADDi8 : TIt<(ops GPR:$dst, GPR:$lhs, i32imm:$rhs),
327 [(set GPR:$dst, (add GPR:$lhs, imm8_255:$rhs))]>;
329 def tADDrr : TI<(ops GPR:$dst, GPR:$lhs, GPR:$rhs),
330 "add $dst, $lhs, $rhs",
331 [(set GPR:$dst, (add GPR:$lhs, GPR:$rhs))]>;
333 def tADDhirr : TIt<(ops GPR:$dst, GPR:$lhs, GPR:$rhs),
334 "add $dst, $rhs", []>;
336 def tADDrPCi : TI<(ops GPR:$dst, i32imm:$rhs),
337 "add $dst, pc, $rhs * 4", []>;
338 def tADDrSPi : TI<(ops GPR:$dst, GPR:$sp, i32imm:$rhs),
339 "add $dst, $sp, $rhs * 4", []>;
340 def tADDspi : TIt<(ops GPR:$dst, GPR:$lhs, i32imm:$rhs),
341 "add $dst, $rhs * 4", []>;
343 def tAND : TIt<(ops GPR:$dst, GPR:$lhs, GPR:$rhs),
345 [(set GPR:$dst, (and GPR:$lhs, GPR:$rhs))]>;
347 def tASRri : TI<(ops GPR:$dst, GPR:$lhs, i32imm:$rhs),
348 "asr $dst, $lhs, $rhs",
349 [(set GPR:$dst, (sra GPR:$lhs, imm:$rhs))]>;
351 def tASRrr : TIt<(ops GPR:$dst, GPR:$lhs, GPR:$rhs),
353 [(set GPR:$dst, (sra GPR:$lhs, GPR:$rhs))]>;
355 def tBIC : TIt<(ops GPR:$dst, GPR:$lhs, GPR:$rhs),
357 [(set GPR:$dst, (and GPR:$lhs, (not GPR:$rhs)))]>;
360 def tCMN : TI<(ops GPR:$lhs, GPR:$rhs),
362 [(ARMcmp GPR:$lhs, (ineg GPR:$rhs))]>;
364 def tCMPi8 : TI<(ops GPR:$lhs, i32imm:$rhs),
366 [(ARMcmp GPR:$lhs, imm0_255:$rhs)]>;
368 def tCMPr : TI<(ops GPR:$lhs, GPR:$rhs),
370 [(ARMcmp GPR:$lhs, GPR:$rhs)]>;
372 def tTST : TI<(ops GPR:$lhs, GPR:$rhs),
374 [(ARMcmpNZ (and GPR:$lhs, GPR:$rhs), 0)]>;
376 def tCMNNZ : TI<(ops GPR:$lhs, GPR:$rhs),
378 [(ARMcmpNZ GPR:$lhs, (ineg GPR:$rhs))]>;
380 def tCMPNZi8 : TI<(ops GPR:$lhs, i32imm:$rhs),
382 [(ARMcmpNZ GPR:$lhs, imm0_255:$rhs)]>;
384 def tCMPNZr : TI<(ops GPR:$lhs, GPR:$rhs),
386 [(ARMcmpNZ GPR:$lhs, GPR:$rhs)]>;
388 // TODO: A7-37: CMP(3) - cmp hi regs
390 def tEOR : TIt<(ops GPR:$dst, GPR:$lhs, GPR:$rhs),
392 [(set GPR:$dst, (xor GPR:$lhs, GPR:$rhs))]>;
394 def tLSLri : TI<(ops GPR:$dst, GPR:$lhs, i32imm:$rhs),
395 "lsl $dst, $lhs, $rhs",
396 [(set GPR:$dst, (shl GPR:$lhs, imm:$rhs))]>;
398 def tLSLrr : TIt<(ops GPR:$dst, GPR:$lhs, GPR:$rhs),
400 [(set GPR:$dst, (shl GPR:$lhs, GPR:$rhs))]>;
402 def tLSRri : TI<(ops GPR:$dst, GPR:$lhs, i32imm:$rhs),
403 "lsr $dst, $lhs, $rhs",
404 [(set GPR:$dst, (srl GPR:$lhs, imm:$rhs))]>;
406 def tLSRrr : TIt<(ops GPR:$dst, GPR:$lhs, GPR:$rhs),
408 [(set GPR:$dst, (srl GPR:$lhs, GPR:$rhs))]>;
410 // FIXME: This is not rematerializable because mov changes the condition code.
411 def tMOVi8 : TI<(ops GPR:$dst, i32imm:$src),
413 [(set GPR:$dst, imm0_255:$src)]>;
415 // TODO: A7-73: MOV(2) - mov setting flag.
418 // Note: MOV(2) of two low regs updates the flags, so we emit this as 'cpy',
419 // which is MOV(3). This also supports high registers.
420 def tMOVr : TI<(ops GPR:$dst, GPR:$src),
421 "cpy $dst, $src", []>;
423 def tMUL : TIt<(ops GPR:$dst, GPR:$lhs, GPR:$rhs),
425 [(set GPR:$dst, (mul GPR:$lhs, GPR:$rhs))]>;
427 def tMVN : TI<(ops GPR:$dst, GPR:$src),
429 [(set GPR:$dst, (not GPR:$src))]>;
431 def tNEG : TI<(ops GPR:$dst, GPR:$src),
433 [(set GPR:$dst, (ineg GPR:$src))]>;
435 def tORR : TIt<(ops GPR:$dst, GPR:$lhs, GPR:$rhs),
437 [(set GPR:$dst, (or GPR:$lhs, GPR:$rhs))]>;
440 def tREV : TI<(ops GPR:$dst, GPR:$src),
442 [(set GPR:$dst, (bswap GPR:$src))]>,
443 Requires<[IsThumb, HasV6]>;
445 def tREV16 : TI<(ops GPR:$dst, GPR:$src),
448 (or (and (srl GPR:$src, 8), 0xFF),
449 (or (and (shl GPR:$src, 8), 0xFF00),
450 (or (and (srl GPR:$src, 8), 0xFF0000),
451 (and (shl GPR:$src, 8), 0xFF000000)))))]>,
452 Requires<[IsThumb, HasV6]>;
454 def tREVSH : TI<(ops GPR:$dst, GPR:$src),
458 (or (srl (and GPR:$src, 0xFFFF), 8),
459 (shl GPR:$src, 8)), i16))]>,
460 Requires<[IsThumb, HasV6]>;
462 def tROR : TIt<(ops GPR:$dst, GPR:$lhs, GPR:$rhs),
464 [(set GPR:$dst, (rotr GPR:$lhs, GPR:$rhs))]>;
467 // Subtract with carry
468 def tSBC : TIt<(ops GPR:$dst, GPR:$lhs, GPR:$rhs),
470 [(set GPR:$dst, (sube GPR:$lhs, GPR:$rhs))]>;
472 def tSUBS : TI<(ops GPR:$dst, GPR:$lhs, GPR:$rhs),
473 "sub $dst, $lhs, $rhs",
474 [(set GPR:$dst, (subc GPR:$lhs, GPR:$rhs))]>;
477 // TODO: A7-96: STMIA - store multiple.
479 def tSUBi3 : TI<(ops GPR:$dst, GPR:$lhs, i32imm:$rhs),
480 "sub $dst, $lhs, $rhs",
481 [(set GPR:$dst, (add GPR:$lhs, imm0_7_neg:$rhs))]>;
483 def tSUBi8 : TIt<(ops GPR:$dst, GPR:$lhs, i32imm:$rhs),
485 [(set GPR:$dst, (add GPR:$lhs, imm8_255_neg:$rhs))]>;
487 def tSUBrr : TI<(ops GPR:$dst, GPR:$lhs, GPR:$rhs),
488 "sub $dst, $lhs, $rhs",
489 [(set GPR:$dst, (sub GPR:$lhs, GPR:$rhs))]>;
491 def tSUBspi : TIt<(ops GPR:$dst, GPR:$lhs, i32imm:$rhs),
492 "sub $dst, $rhs * 4", []>;
494 def tSXTB : TI<(ops GPR:$dst, GPR:$src),
496 [(set GPR:$dst, (sext_inreg GPR:$src, i8))]>,
497 Requires<[IsThumb, HasV6]>;
498 def tSXTH : TI<(ops GPR:$dst, GPR:$src),
500 [(set GPR:$dst, (sext_inreg GPR:$src, i16))]>,
501 Requires<[IsThumb, HasV6]>;
504 def tUXTB : TI<(ops GPR:$dst, GPR:$src),
506 [(set GPR:$dst, (and GPR:$src, 0xFF))]>,
507 Requires<[IsThumb, HasV6]>;
508 def tUXTH : TI<(ops GPR:$dst, GPR:$src),
510 [(set GPR:$dst, (and GPR:$src, 0xFFFF))]>,
511 Requires<[IsThumb, HasV6]>;
514 // Conditional move tMOVCCr - Used to implement the Thumb SELECT_CC DAG operation.
515 // Expanded by the scheduler into a branch sequence.
516 let usesCustomDAGSchedInserter = 1 in // Expanded by the scheduler.
518 PseudoInst<(ops GPR:$dst, GPR:$false, GPR:$true, ccop:$cc),
520 [(set GPR:$dst, (ARMcmov GPR:$false, GPR:$true, imm:$cc))]>;
522 // tLEApcrel - Load a pc-relative address into a register without offending the
524 def tLEApcrel : TIx2<(ops GPR:$dst, i32imm:$label),
525 !strconcat(!strconcat(".set PCRELV${:uid}, ($label-(",
526 "${:private}PCRELL${:uid}+4))\n"),
527 !strconcat("\tmov $dst, #PCRELV${:uid}\n",
528 "${:private}PCRELL${:uid}:\n\tadd $dst, pc")),
531 def tLEApcrelJT : TIx2<(ops GPR:$dst, i32imm:$label, i32imm:$id),
532 !strconcat(!strconcat(".set PCRELV${:uid}, (${label}_${id:no_hash}-(",
533 "${:private}PCRELL${:uid}+4))\n"),
534 !strconcat("\tmov $dst, #PCRELV${:uid}\n",
535 "${:private}PCRELL${:uid}:\n\tadd $dst, pc")),
538 //===----------------------------------------------------------------------===//
542 // __aeabi_read_tp preserves the registers r1-r3.
545 def tTPsoft : TIx2<(ops),
546 "bl __aeabi_read_tp",
547 [(set R0, ARMthread_pointer)]>;
550 //===----------------------------------------------------------------------===//
551 // Non-Instruction Patterns
554 // ConstantPool, GlobalAddress
555 def : ThumbPat<(ARMWrapper tglobaladdr :$dst), (tLEApcrel tglobaladdr :$dst)>;
556 def : ThumbPat<(ARMWrapper tconstpool :$dst), (tLEApcrel tconstpool :$dst)>;
559 def : ThumbPat<(ARMWrapperJT tjumptable:$dst, imm:$id),
560 (tLEApcrelJT tjumptable:$dst, imm:$id)>;
563 def : ThumbPat<(ARMtcall texternalsym:$func), (tBL texternalsym:$func)>;
564 def : ThumbV5Pat<(ARMcall texternalsym:$func), (tBLXi texternalsym:$func)>;
566 // Indirect calls to ARM routines
567 def : ThumbV5Pat<(ARMcall GPR:$dst), (tBLXr GPR:$dst)>;
569 // zextload i1 -> zextload i8
570 def : ThumbPat<(zextloadi1 t_addrmode_s1:$addr),
571 (tLDRB t_addrmode_s1:$addr)>;
573 // extload -> zextload
574 def : ThumbPat<(extloadi1 t_addrmode_s1:$addr), (tLDRB t_addrmode_s1:$addr)>;
575 def : ThumbPat<(extloadi8 t_addrmode_s1:$addr), (tLDRB t_addrmode_s1:$addr)>;
576 def : ThumbPat<(extloadi16 t_addrmode_s2:$addr), (tLDRH t_addrmode_s2:$addr)>;
578 // truncstore i1 -> truncstore i8
579 def : ThumbPat<(truncstorei1 GPR:$src, t_addrmode_s1:$dst),
580 (tSTRB GPR:$src, t_addrmode_s1:$dst)>;
582 // Large immediate handling.
585 def : ThumbPat<(i32 thumb_immshifted:$src),
586 (tLSLri (tMOVi8 (thumb_immshifted_val imm:$src)),
587 (thumb_immshifted_shamt imm:$src))>;
589 def : ThumbPat<(i32 imm0_255_comp:$src),
590 (tMVN (tMOVi8 (imm_comp_XFORM imm:$src)))>;