1 //===-- SparcISelLowering.cpp - Sparc DAG Lowering Implementation ---------===//
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 implements the interfaces that Sparc uses to lower LLVM code into a
13 //===----------------------------------------------------------------------===//
15 #include "SparcISelLowering.h"
16 #include "SparcTargetMachine.h"
17 #include "SparcMachineFunctionInfo.h"
18 #include "llvm/Function.h"
19 #include "llvm/CodeGen/CallingConvLower.h"
20 #include "llvm/CodeGen/MachineFrameInfo.h"
21 #include "llvm/CodeGen/MachineFunction.h"
22 #include "llvm/CodeGen/MachineInstrBuilder.h"
23 #include "llvm/CodeGen/MachineRegisterInfo.h"
24 #include "llvm/CodeGen/SelectionDAG.h"
25 #include "llvm/CodeGen/TargetLoweringObjectFileImpl.h"
26 #include "llvm/ADT/VectorExtras.h"
27 #include "llvm/Support/ErrorHandling.h"
31 //===----------------------------------------------------------------------===//
32 // Calling Convention Implementation
33 //===----------------------------------------------------------------------===//
35 #include "SparcGenCallingConv.inc"
38 SparcTargetLowering::LowerReturn(SDValue Chain,
39 CallingConv::ID CallConv, bool isVarArg,
40 const SmallVectorImpl<ISD::OutputArg> &Outs,
41 const SmallVectorImpl<SDValue> &OutVals,
42 DebugLoc dl, SelectionDAG &DAG) const {
44 // CCValAssign - represent the assignment of the return value to locations.
45 SmallVector<CCValAssign, 16> RVLocs;
47 // CCState - Info about the registers and stack slot.
48 CCState CCInfo(CallConv, isVarArg, DAG.getTarget(),
49 RVLocs, *DAG.getContext());
51 // Analize return values.
52 CCInfo.AnalyzeReturn(Outs, RetCC_Sparc32);
54 // If this is the first return lowered for this function, add the regs to the
55 // liveout set for the function.
56 if (DAG.getMachineFunction().getRegInfo().liveout_empty()) {
57 for (unsigned i = 0; i != RVLocs.size(); ++i)
58 if (RVLocs[i].isRegLoc())
59 DAG.getMachineFunction().getRegInfo().addLiveOut(RVLocs[i].getLocReg());
64 // Copy the result values into the output registers.
65 for (unsigned i = 0; i != RVLocs.size(); ++i) {
66 CCValAssign &VA = RVLocs[i];
67 assert(VA.isRegLoc() && "Can only return in registers!");
69 Chain = DAG.getCopyToReg(Chain, dl, VA.getLocReg(),
72 // Guarantee that all emitted copies are stuck together with flags.
73 Flag = Chain.getValue(1);
77 return DAG.getNode(SPISD::RET_FLAG, dl, MVT::Other, Chain, Flag);
78 return DAG.getNode(SPISD::RET_FLAG, dl, MVT::Other, Chain);
81 /// LowerFormalArguments - V8 uses a very simple ABI, where all values are
82 /// passed in either one or two GPRs, including FP values. TODO: we should
83 /// pass FP values in FP registers for fastcc functions.
85 SparcTargetLowering::LowerFormalArguments(SDValue Chain,
86 CallingConv::ID CallConv, bool isVarArg,
87 const SmallVectorImpl<ISD::InputArg>
89 DebugLoc dl, SelectionDAG &DAG,
90 SmallVectorImpl<SDValue> &InVals)
93 MachineFunction &MF = DAG.getMachineFunction();
94 MachineRegisterInfo &RegInfo = MF.getRegInfo();
95 SparcMachineFunctionInfo *FuncInfo = MF.getInfo<SparcMachineFunctionInfo>();
97 // Assign locations to all of the incoming arguments.
98 SmallVector<CCValAssign, 16> ArgLocs;
99 CCState CCInfo(CallConv, isVarArg, getTargetMachine(),
100 ArgLocs, *DAG.getContext());
101 CCInfo.AnalyzeFormalArguments(Ins, CC_Sparc32);
103 static const unsigned ArgRegs[] = {
104 SP::I0, SP::I1, SP::I2, SP::I3, SP::I4, SP::I5
106 const unsigned *CurArgReg = ArgRegs, *ArgRegEnd = ArgRegs+6;
107 unsigned ArgOffset = 68;
109 for (unsigned i = 0, e = ArgLocs.size(); i != e; ++i) {
111 CCValAssign &VA = ArgLocs[i];
112 // FIXME: We ignore the register assignments of AnalyzeFormalArguments
113 // because it doesn't know how to split a double into two i32 registers.
114 EVT ObjectVT = VA.getValVT();
115 switch (ObjectVT.getSimpleVT().SimpleTy) {
116 default: llvm_unreachable("Unhandled argument type!");
121 if (!Ins[i].Used) { // Argument is dead.
122 if (CurArgReg < ArgRegEnd) ++CurArgReg;
123 InVals.push_back(DAG.getUNDEF(ObjectVT));
124 } else if (CurArgReg < ArgRegEnd) { // Lives in an incoming GPR
125 unsigned VReg = RegInfo.createVirtualRegister(&SP::IntRegsRegClass);
126 MF.getRegInfo().addLiveIn(*CurArgReg++, VReg);
127 SDValue Arg = DAG.getCopyFromReg(Chain, dl, VReg, MVT::i32);
128 if (ObjectVT != MVT::i32) {
129 unsigned AssertOp = ISD::AssertSext;
130 Arg = DAG.getNode(AssertOp, dl, MVT::i32, Arg,
131 DAG.getValueType(ObjectVT));
132 Arg = DAG.getNode(ISD::TRUNCATE, dl, ObjectVT, Arg);
134 InVals.push_back(Arg);
136 int FrameIdx = MF.getFrameInfo()->CreateFixedObject(4, ArgOffset,
138 SDValue FIPtr = DAG.getFrameIndex(FrameIdx, MVT::i32);
140 if (ObjectVT == MVT::i32) {
141 Load = DAG.getLoad(MVT::i32, dl, Chain, FIPtr, MachinePointerInfo(),
144 ISD::LoadExtType LoadOp = ISD::SEXTLOAD;
146 // Sparc is big endian, so add an offset based on the ObjectVT.
147 unsigned Offset = 4-std::max(1U, ObjectVT.getSizeInBits()/8);
148 FIPtr = DAG.getNode(ISD::ADD, dl, MVT::i32, FIPtr,
149 DAG.getConstant(Offset, MVT::i32));
150 Load = DAG.getExtLoad(LoadOp, MVT::i32, dl, Chain, FIPtr,
151 MachinePointerInfo(), ObjectVT, false, false,0);
152 Load = DAG.getNode(ISD::TRUNCATE, dl, ObjectVT, Load);
154 InVals.push_back(Load);
160 if (!Ins[i].Used) { // Argument is dead.
161 if (CurArgReg < ArgRegEnd) ++CurArgReg;
162 InVals.push_back(DAG.getUNDEF(ObjectVT));
163 } else if (CurArgReg < ArgRegEnd) { // Lives in an incoming GPR
164 // FP value is passed in an integer register.
165 unsigned VReg = RegInfo.createVirtualRegister(&SP::IntRegsRegClass);
166 MF.getRegInfo().addLiveIn(*CurArgReg++, VReg);
167 SDValue Arg = DAG.getCopyFromReg(Chain, dl, VReg, MVT::i32);
169 Arg = DAG.getNode(ISD::BITCAST, dl, MVT::f32, Arg);
170 InVals.push_back(Arg);
172 int FrameIdx = MF.getFrameInfo()->CreateFixedObject(4, ArgOffset,
174 SDValue FIPtr = DAG.getFrameIndex(FrameIdx, MVT::i32);
175 SDValue Load = DAG.getLoad(MVT::f32, dl, Chain, FIPtr,
176 MachinePointerInfo(),
178 InVals.push_back(Load);
185 if (!Ins[i].Used) { // Argument is dead.
186 if (CurArgReg < ArgRegEnd) ++CurArgReg;
187 if (CurArgReg < ArgRegEnd) ++CurArgReg;
188 InVals.push_back(DAG.getUNDEF(ObjectVT));
191 if (CurArgReg < ArgRegEnd) { // Lives in an incoming GPR
192 unsigned VRegHi = RegInfo.createVirtualRegister(&SP::IntRegsRegClass);
193 MF.getRegInfo().addLiveIn(*CurArgReg++, VRegHi);
194 HiVal = DAG.getCopyFromReg(Chain, dl, VRegHi, MVT::i32);
196 int FrameIdx = MF.getFrameInfo()->CreateFixedObject(4, ArgOffset,
198 SDValue FIPtr = DAG.getFrameIndex(FrameIdx, MVT::i32);
199 HiVal = DAG.getLoad(MVT::i32, dl, Chain, FIPtr, MachinePointerInfo(),
204 if (CurArgReg < ArgRegEnd) { // Lives in an incoming GPR
205 unsigned VRegLo = RegInfo.createVirtualRegister(&SP::IntRegsRegClass);
206 MF.getRegInfo().addLiveIn(*CurArgReg++, VRegLo);
207 LoVal = DAG.getCopyFromReg(Chain, dl, VRegLo, MVT::i32);
209 int FrameIdx = MF.getFrameInfo()->CreateFixedObject(4, ArgOffset+4,
211 SDValue FIPtr = DAG.getFrameIndex(FrameIdx, MVT::i32);
212 LoVal = DAG.getLoad(MVT::i32, dl, Chain, FIPtr, MachinePointerInfo(),
216 // Compose the two halves together into an i64 unit.
218 DAG.getNode(ISD::BUILD_PAIR, dl, MVT::i64, LoVal, HiVal);
220 // If we want a double, do a bit convert.
221 if (ObjectVT == MVT::f64)
222 WholeValue = DAG.getNode(ISD::BITCAST, dl, MVT::f64, WholeValue);
224 InVals.push_back(WholeValue);
231 // Store remaining ArgRegs to the stack if this is a varargs function.
233 // Remember the vararg offset for the va_start implementation.
234 FuncInfo->setVarArgsFrameOffset(ArgOffset);
236 std::vector<SDValue> OutChains;
238 for (; CurArgReg != ArgRegEnd; ++CurArgReg) {
239 unsigned VReg = RegInfo.createVirtualRegister(&SP::IntRegsRegClass);
240 MF.getRegInfo().addLiveIn(*CurArgReg, VReg);
241 SDValue Arg = DAG.getCopyFromReg(DAG.getRoot(), dl, VReg, MVT::i32);
243 int FrameIdx = MF.getFrameInfo()->CreateFixedObject(4, ArgOffset,
245 SDValue FIPtr = DAG.getFrameIndex(FrameIdx, MVT::i32);
247 OutChains.push_back(DAG.getStore(DAG.getRoot(), dl, Arg, FIPtr,
248 MachinePointerInfo(),
253 if (!OutChains.empty()) {
254 OutChains.push_back(Chain);
255 Chain = DAG.getNode(ISD::TokenFactor, dl, MVT::Other,
256 &OutChains[0], OutChains.size());
264 SparcTargetLowering::LowerCall(SDValue Chain, SDValue Callee,
265 CallingConv::ID CallConv, bool isVarArg,
267 const SmallVectorImpl<ISD::OutputArg> &Outs,
268 const SmallVectorImpl<SDValue> &OutVals,
269 const SmallVectorImpl<ISD::InputArg> &Ins,
270 DebugLoc dl, SelectionDAG &DAG,
271 SmallVectorImpl<SDValue> &InVals) const {
272 // Sparc target does not yet support tail call optimization.
276 // Analyze operands of the call, assigning locations to each operand.
277 SmallVector<CCValAssign, 16> ArgLocs;
278 CCState CCInfo(CallConv, isVarArg, DAG.getTarget(), ArgLocs);
279 CCInfo.AnalyzeCallOperands(Outs, CC_Sparc32);
281 // Get the size of the outgoing arguments stack space requirement.
282 unsigned ArgsSize = CCInfo.getNextStackOffset();
283 // FIXME: We can't use this until f64 is known to take two GPRs.
287 // Count the size of the outgoing arguments.
288 unsigned ArgsSize = 0;
289 for (unsigned i = 0, e = Outs.size(); i != e; ++i) {
290 switch (Outs[i].VT.SimpleTy) {
291 default: llvm_unreachable("Unknown value type!");
306 ArgsSize -= 4*6; // Space for first 6 arguments is prereserved.
311 // Keep stack frames 8-byte aligned.
312 ArgsSize = (ArgsSize+7) & ~7;
314 Chain = DAG.getCALLSEQ_START(Chain, DAG.getIntPtrConstant(ArgsSize, true));
316 SmallVector<std::pair<unsigned, SDValue>, 8> RegsToPass;
317 SmallVector<SDValue, 8> MemOpChains;
320 // Walk the register/memloc assignments, inserting copies/loads.
321 for (unsigned i = 0, e = ArgLocs.size(); i != e; ++i) {
322 CCValAssign &VA = ArgLocs[i];
323 SDValue Arg = OutVals[i];
325 // Promote the value if needed.
326 switch (VA.getLocInfo()) {
327 default: llvm_unreachable("Unknown loc info!");
328 case CCValAssign::Full: break;
329 case CCValAssign::SExt:
330 Arg = DAG.getNode(ISD::SIGN_EXTEND, VA.getLocVT(), Arg);
332 case CCValAssign::ZExt:
333 Arg = DAG.getNode(ISD::ZERO_EXTEND, VA.getLocVT(), Arg);
335 case CCValAssign::AExt:
336 Arg = DAG.getNode(ISD::ANY_EXTEND, VA.getLocVT(), Arg);
340 // Arguments that can be passed on register must be kept at
343 RegsToPass.push_back(std::make_pair(VA.getLocReg(), Arg));
347 assert(VA.isMemLoc());
349 // Create a store off the stack pointer for this argument.
350 SDValue StackPtr = DAG.getRegister(SP::O6, MVT::i32);
351 // FIXME: VERIFY THAT 68 IS RIGHT.
352 SDValue PtrOff = DAG.getIntPtrConstant(VA.getLocMemOffset()+68);
353 PtrOff = DAG.getNode(ISD::ADD, MVT::i32, StackPtr, PtrOff);
354 MemOpChains.push_back(DAG.getStore(Chain, Arg, PtrOff, MachinePointerInfo(),
359 static const unsigned ArgRegs[] = {
360 SP::I0, SP::I1, SP::I2, SP::I3, SP::I4, SP::I5
362 unsigned ArgOffset = 68;
364 for (unsigned i = 0, e = Outs.size(); i != e; ++i) {
365 SDValue Val = OutVals[i];
366 EVT ObjectVT = Outs[i].VT;
367 SDValue ValToStore(0, 0);
368 SDValue ValToStore2(0, 0);
369 unsigned ArgOffset1 = 0, ArgOffset2 = 0;
370 switch (ObjectVT.getSimpleVT().SimpleTy) {
371 default: llvm_unreachable("Unhandled argument type!");
373 ArgOffset1 = ArgOffset;
376 if (RegsToPass.size() >= 6) {
379 RegsToPass.push_back(std::make_pair(ArgRegs[RegsToPass.size()], Val));
384 ArgOffset1 = ArgOffset;
386 if (RegsToPass.size() >= 6) {
389 // Convert this to a FP value in an int reg.
390 Val = DAG.getNode(ISD::BITCAST, dl, MVT::i32, Val);
391 RegsToPass.push_back(std::make_pair(ArgRegs[RegsToPass.size()], Val));
396 if (RegsToPass.size() >= 6) {
397 if (ArgOffset % 8 == 0) {
398 ArgOffset1 = ArgOffset;
400 ValToStore = Val; // Whole thing is passed in memory.
404 // Break into top and bottom parts by storing to the stack and loading
405 // out the parts as integers.
406 SDValue StackPtr = DAG.CreateStackTemporary(MVT::f64, MVT::i32);
407 SDValue Store = DAG.getStore(DAG.getEntryNode(), dl,
408 Val, StackPtr, MachinePointerInfo(),
410 // Sparc is big-endian, so the high part comes first.
411 SDValue Hi = DAG.getLoad(MVT::i32, dl, Store, StackPtr,
412 MachinePointerInfo(), false, false, 0);
413 // Increment the pointer to the other half.
414 StackPtr = DAG.getNode(ISD::ADD, dl, StackPtr.getValueType(), StackPtr,
415 DAG.getIntPtrConstant(4));
416 // Load the low part.
417 SDValue Lo = DAG.getLoad(MVT::i32, dl, Store, StackPtr,
418 MachinePointerInfo(), false, false, 0);
420 if (RegsToPass.size() >= 6) {
421 ArgOffset1 = ArgOffset;
424 RegsToPass.push_back(std::make_pair(ArgRegs[RegsToPass.size()], Hi));
427 if (RegsToPass.size() >= 6) {
428 ArgOffset2 = ArgOffset;
431 RegsToPass.push_back(std::make_pair(ArgRegs[RegsToPass.size()], Lo));
438 if (RegsToPass.size() >= 6) {
439 if (ArgOffset % 8 == 0) {
440 ArgOffset1 = ArgOffset;
442 ValToStore = Val; // Whole thing is passed in memory.
447 // Split the value into top and bottom part. Top part goes in a reg.
448 SDValue Hi = DAG.getNode(ISD::EXTRACT_ELEMENT, dl, MVT::i32, Val,
449 DAG.getConstant(1, MVT::i32));
450 SDValue Lo = DAG.getNode(ISD::EXTRACT_ELEMENT, dl, MVT::i32, Val,
451 DAG.getConstant(0, MVT::i32));
452 if (RegsToPass.size() >= 6) {
453 ArgOffset1 = ArgOffset;
456 RegsToPass.push_back(std::make_pair(ArgRegs[RegsToPass.size()], Hi));
459 if (RegsToPass.size() >= 6) {
460 ArgOffset2 = ArgOffset;
463 RegsToPass.push_back(std::make_pair(ArgRegs[RegsToPass.size()], Lo));
470 if (ValToStore.getNode()) {
471 SDValue StackPtr = DAG.getRegister(SP::O6, MVT::i32);
472 SDValue PtrOff = DAG.getConstant(ArgOffset1, MVT::i32);
473 PtrOff = DAG.getNode(ISD::ADD, dl, MVT::i32, StackPtr, PtrOff);
474 MemOpChains.push_back(DAG.getStore(Chain, dl, ValToStore,
475 PtrOff, MachinePointerInfo(),
478 if (ValToStore2.getNode()) {
479 SDValue StackPtr = DAG.getRegister(SP::O6, MVT::i32);
480 SDValue PtrOff = DAG.getConstant(ArgOffset2, MVT::i32);
481 PtrOff = DAG.getNode(ISD::ADD, dl, MVT::i32, StackPtr, PtrOff);
482 MemOpChains.push_back(DAG.getStore(Chain, dl, ValToStore2,
483 PtrOff, MachinePointerInfo(),
489 // Emit all stores, make sure the occur before any copies into physregs.
490 if (!MemOpChains.empty())
491 Chain = DAG.getNode(ISD::TokenFactor, dl, MVT::Other,
492 &MemOpChains[0], MemOpChains.size());
494 // Build a sequence of copy-to-reg nodes chained together with token
495 // chain and flag operands which copy the outgoing args into registers.
496 // The InFlag in necessary since all emited instructions must be
499 for (unsigned i = 0, e = RegsToPass.size(); i != e; ++i) {
500 unsigned Reg = RegsToPass[i].first;
501 // Remap I0->I7 -> O0->O7.
502 if (Reg >= SP::I0 && Reg <= SP::I7)
503 Reg = Reg-SP::I0+SP::O0;
505 Chain = DAG.getCopyToReg(Chain, dl, Reg, RegsToPass[i].second, InFlag);
506 InFlag = Chain.getValue(1);
509 // If the callee is a GlobalAddress node (quite common, every direct call is)
510 // turn it into a TargetGlobalAddress node so that legalize doesn't hack it.
511 // Likewise ExternalSymbol -> TargetExternalSymbol.
512 if (GlobalAddressSDNode *G = dyn_cast<GlobalAddressSDNode>(Callee))
513 Callee = DAG.getTargetGlobalAddress(G->getGlobal(), dl, MVT::i32);
514 else if (ExternalSymbolSDNode *E = dyn_cast<ExternalSymbolSDNode>(Callee))
515 Callee = DAG.getTargetExternalSymbol(E->getSymbol(), MVT::i32);
517 std::vector<EVT> NodeTys;
518 NodeTys.push_back(MVT::Other); // Returns a chain
519 NodeTys.push_back(MVT::Glue); // Returns a flag for retval copy to use.
520 SDValue Ops[] = { Chain, Callee, InFlag };
521 Chain = DAG.getNode(SPISD::CALL, dl, NodeTys, Ops, InFlag.getNode() ? 3 : 2);
522 InFlag = Chain.getValue(1);
524 Chain = DAG.getCALLSEQ_END(Chain, DAG.getIntPtrConstant(ArgsSize, true),
525 DAG.getIntPtrConstant(0, true), InFlag);
526 InFlag = Chain.getValue(1);
528 // Assign locations to each value returned by this call.
529 SmallVector<CCValAssign, 16> RVLocs;
530 CCState RVInfo(CallConv, isVarArg, DAG.getTarget(),
531 RVLocs, *DAG.getContext());
533 RVInfo.AnalyzeCallResult(Ins, RetCC_Sparc32);
535 // Copy all of the result registers out of their specified physreg.
536 for (unsigned i = 0; i != RVLocs.size(); ++i) {
537 unsigned Reg = RVLocs[i].getLocReg();
539 // Remap I0->I7 -> O0->O7.
540 if (Reg >= SP::I0 && Reg <= SP::I7)
541 Reg = Reg-SP::I0+SP::O0;
543 Chain = DAG.getCopyFromReg(Chain, dl, Reg,
544 RVLocs[i].getValVT(), InFlag).getValue(1);
545 InFlag = Chain.getValue(2);
546 InVals.push_back(Chain.getValue(0));
554 //===----------------------------------------------------------------------===//
555 // TargetLowering Implementation
556 //===----------------------------------------------------------------------===//
558 /// IntCondCCodeToICC - Convert a DAG integer condition code to a SPARC ICC
560 static SPCC::CondCodes IntCondCCodeToICC(ISD::CondCode CC) {
562 default: llvm_unreachable("Unknown integer condition code!");
563 case ISD::SETEQ: return SPCC::ICC_E;
564 case ISD::SETNE: return SPCC::ICC_NE;
565 case ISD::SETLT: return SPCC::ICC_L;
566 case ISD::SETGT: return SPCC::ICC_G;
567 case ISD::SETLE: return SPCC::ICC_LE;
568 case ISD::SETGE: return SPCC::ICC_GE;
569 case ISD::SETULT: return SPCC::ICC_CS;
570 case ISD::SETULE: return SPCC::ICC_LEU;
571 case ISD::SETUGT: return SPCC::ICC_GU;
572 case ISD::SETUGE: return SPCC::ICC_CC;
576 /// FPCondCCodeToFCC - Convert a DAG floatingp oint condition code to a SPARC
578 static SPCC::CondCodes FPCondCCodeToFCC(ISD::CondCode CC) {
580 default: llvm_unreachable("Unknown fp condition code!");
582 case ISD::SETOEQ: return SPCC::FCC_E;
584 case ISD::SETUNE: return SPCC::FCC_NE;
586 case ISD::SETOLT: return SPCC::FCC_L;
588 case ISD::SETOGT: return SPCC::FCC_G;
590 case ISD::SETOLE: return SPCC::FCC_LE;
592 case ISD::SETOGE: return SPCC::FCC_GE;
593 case ISD::SETULT: return SPCC::FCC_UL;
594 case ISD::SETULE: return SPCC::FCC_ULE;
595 case ISD::SETUGT: return SPCC::FCC_UG;
596 case ISD::SETUGE: return SPCC::FCC_UGE;
597 case ISD::SETUO: return SPCC::FCC_U;
598 case ISD::SETO: return SPCC::FCC_O;
599 case ISD::SETONE: return SPCC::FCC_LG;
600 case ISD::SETUEQ: return SPCC::FCC_UE;
604 SparcTargetLowering::SparcTargetLowering(TargetMachine &TM)
605 : TargetLowering(TM, new TargetLoweringObjectFileELF()) {
607 // Set up the register classes.
608 addRegisterClass(MVT::i32, SP::IntRegsRegisterClass);
609 addRegisterClass(MVT::f32, SP::FPRegsRegisterClass);
610 addRegisterClass(MVT::f64, SP::DFPRegsRegisterClass);
612 // Turn FP extload into load/fextend
613 setLoadExtAction(ISD::EXTLOAD, MVT::f32, Expand);
614 // Sparc doesn't have i1 sign extending load
615 setLoadExtAction(ISD::SEXTLOAD, MVT::i1, Promote);
616 // Turn FP truncstore into trunc + store.
617 setTruncStoreAction(MVT::f64, MVT::f32, Expand);
619 // Custom legalize GlobalAddress nodes into LO/HI parts.
620 setOperationAction(ISD::GlobalAddress, MVT::i32, Custom);
621 setOperationAction(ISD::GlobalTLSAddress, MVT::i32, Custom);
622 setOperationAction(ISD::ConstantPool , MVT::i32, Custom);
624 // Sparc doesn't have sext_inreg, replace them with shl/sra
625 setOperationAction(ISD::SIGN_EXTEND_INREG, MVT::i16, Expand);
626 setOperationAction(ISD::SIGN_EXTEND_INREG, MVT::i8 , Expand);
627 setOperationAction(ISD::SIGN_EXTEND_INREG, MVT::i1 , Expand);
629 // Sparc has no REM or DIVREM operations.
630 setOperationAction(ISD::UREM, MVT::i32, Expand);
631 setOperationAction(ISD::SREM, MVT::i32, Expand);
632 setOperationAction(ISD::SDIVREM, MVT::i32, Expand);
633 setOperationAction(ISD::UDIVREM, MVT::i32, Expand);
635 // Custom expand fp<->sint
636 setOperationAction(ISD::FP_TO_SINT, MVT::i32, Custom);
637 setOperationAction(ISD::SINT_TO_FP, MVT::i32, Custom);
640 setOperationAction(ISD::FP_TO_UINT, MVT::i32, Expand);
641 setOperationAction(ISD::UINT_TO_FP, MVT::i32, Expand);
643 setOperationAction(ISD::BITCAST, MVT::f32, Expand);
644 setOperationAction(ISD::BITCAST, MVT::i32, Expand);
646 // Sparc has no select or setcc: expand to SELECT_CC.
647 setOperationAction(ISD::SELECT, MVT::i32, Expand);
648 setOperationAction(ISD::SELECT, MVT::f32, Expand);
649 setOperationAction(ISD::SELECT, MVT::f64, Expand);
650 setOperationAction(ISD::SETCC, MVT::i32, Expand);
651 setOperationAction(ISD::SETCC, MVT::f32, Expand);
652 setOperationAction(ISD::SETCC, MVT::f64, Expand);
654 // Sparc doesn't have BRCOND either, it has BR_CC.
655 setOperationAction(ISD::BRCOND, MVT::Other, Expand);
656 setOperationAction(ISD::BRIND, MVT::Other, Expand);
657 setOperationAction(ISD::BR_JT, MVT::Other, Expand);
658 setOperationAction(ISD::BR_CC, MVT::i32, Custom);
659 setOperationAction(ISD::BR_CC, MVT::f32, Custom);
660 setOperationAction(ISD::BR_CC, MVT::f64, Custom);
662 setOperationAction(ISD::SELECT_CC, MVT::i32, Custom);
663 setOperationAction(ISD::SELECT_CC, MVT::f32, Custom);
664 setOperationAction(ISD::SELECT_CC, MVT::f64, Custom);
666 // SPARC has no intrinsics for these particular operations.
667 setOperationAction(ISD::MEMBARRIER, MVT::Other, Expand);
669 setOperationAction(ISD::FSIN , MVT::f64, Expand);
670 setOperationAction(ISD::FCOS , MVT::f64, Expand);
671 setOperationAction(ISD::FREM , MVT::f64, Expand);
672 setOperationAction(ISD::FSIN , MVT::f32, Expand);
673 setOperationAction(ISD::FCOS , MVT::f32, Expand);
674 setOperationAction(ISD::FREM , MVT::f32, Expand);
675 setOperationAction(ISD::CTPOP, MVT::i32, Expand);
676 setOperationAction(ISD::CTTZ , MVT::i32, Expand);
677 setOperationAction(ISD::CTLZ , MVT::i32, Expand);
678 setOperationAction(ISD::ROTL , MVT::i32, Expand);
679 setOperationAction(ISD::ROTR , MVT::i32, Expand);
680 setOperationAction(ISD::BSWAP, MVT::i32, Expand);
681 setOperationAction(ISD::FCOPYSIGN, MVT::f64, Expand);
682 setOperationAction(ISD::FCOPYSIGN, MVT::f32, Expand);
683 setOperationAction(ISD::FPOW , MVT::f64, Expand);
684 setOperationAction(ISD::FPOW , MVT::f32, Expand);
686 setOperationAction(ISD::SHL_PARTS, MVT::i32, Expand);
687 setOperationAction(ISD::SRA_PARTS, MVT::i32, Expand);
688 setOperationAction(ISD::SRL_PARTS, MVT::i32, Expand);
690 // FIXME: Sparc provides these multiplies, but we don't have them yet.
691 setOperationAction(ISD::UMUL_LOHI, MVT::i32, Expand);
692 setOperationAction(ISD::SMUL_LOHI, MVT::i32, Expand);
694 setOperationAction(ISD::EH_LABEL, MVT::Other, Expand);
696 // VASTART needs to be custom lowered to use the VarArgsFrameIndex.
697 setOperationAction(ISD::VASTART , MVT::Other, Custom);
698 // VAARG needs to be lowered to not do unaligned accesses for doubles.
699 setOperationAction(ISD::VAARG , MVT::Other, Custom);
701 // Use the default implementation.
702 setOperationAction(ISD::VACOPY , MVT::Other, Expand);
703 setOperationAction(ISD::VAEND , MVT::Other, Expand);
704 setOperationAction(ISD::STACKSAVE , MVT::Other, Expand);
705 setOperationAction(ISD::STACKRESTORE , MVT::Other, Expand);
706 setOperationAction(ISD::DYNAMIC_STACKALLOC, MVT::i32 , Custom);
708 // No debug info support yet.
709 setOperationAction(ISD::EH_LABEL, MVT::Other, Expand);
711 setStackPointerRegisterToSaveRestore(SP::O6);
713 if (TM.getSubtarget<SparcSubtarget>().isV9())
714 setOperationAction(ISD::CTPOP, MVT::i32, Legal);
716 computeRegisterProperties();
719 const char *SparcTargetLowering::getTargetNodeName(unsigned Opcode) const {
722 case SPISD::CMPICC: return "SPISD::CMPICC";
723 case SPISD::CMPFCC: return "SPISD::CMPFCC";
724 case SPISD::BRICC: return "SPISD::BRICC";
725 case SPISD::BRFCC: return "SPISD::BRFCC";
726 case SPISD::SELECT_ICC: return "SPISD::SELECT_ICC";
727 case SPISD::SELECT_FCC: return "SPISD::SELECT_FCC";
728 case SPISD::Hi: return "SPISD::Hi";
729 case SPISD::Lo: return "SPISD::Lo";
730 case SPISD::FTOI: return "SPISD::FTOI";
731 case SPISD::ITOF: return "SPISD::ITOF";
732 case SPISD::CALL: return "SPISD::CALL";
733 case SPISD::RET_FLAG: return "SPISD::RET_FLAG";
737 /// isMaskedValueZeroForTargetNode - Return true if 'Op & Mask' is known to
738 /// be zero. Op is expected to be a target specific node. Used by DAG
740 void SparcTargetLowering::computeMaskedBitsForTargetNode(const SDValue Op,
744 const SelectionDAG &DAG,
745 unsigned Depth) const {
746 APInt KnownZero2, KnownOne2;
747 KnownZero = KnownOne = APInt(Mask.getBitWidth(), 0); // Don't know anything.
749 switch (Op.getOpcode()) {
751 case SPISD::SELECT_ICC:
752 case SPISD::SELECT_FCC:
753 DAG.ComputeMaskedBits(Op.getOperand(1), Mask, KnownZero, KnownOne,
755 DAG.ComputeMaskedBits(Op.getOperand(0), Mask, KnownZero2, KnownOne2,
757 assert((KnownZero & KnownOne) == 0 && "Bits known to be one AND zero?");
758 assert((KnownZero2 & KnownOne2) == 0 && "Bits known to be one AND zero?");
760 // Only known if known in both the LHS and RHS.
761 KnownOne &= KnownOne2;
762 KnownZero &= KnownZero2;
767 // Look at LHS/RHS/CC and see if they are a lowered setcc instruction. If so
768 // set LHS/RHS and SPCC to the LHS/RHS of the setcc and SPCC to the condition.
769 static void LookThroughSetCC(SDValue &LHS, SDValue &RHS,
770 ISD::CondCode CC, unsigned &SPCC) {
771 if (isa<ConstantSDNode>(RHS) &&
772 cast<ConstantSDNode>(RHS)->isNullValue() &&
774 ((LHS.getOpcode() == SPISD::SELECT_ICC &&
775 LHS.getOperand(3).getOpcode() == SPISD::CMPICC) ||
776 (LHS.getOpcode() == SPISD::SELECT_FCC &&
777 LHS.getOperand(3).getOpcode() == SPISD::CMPFCC)) &&
778 isa<ConstantSDNode>(LHS.getOperand(0)) &&
779 isa<ConstantSDNode>(LHS.getOperand(1)) &&
780 cast<ConstantSDNode>(LHS.getOperand(0))->isOne() &&
781 cast<ConstantSDNode>(LHS.getOperand(1))->isNullValue()) {
782 SDValue CMPCC = LHS.getOperand(3);
783 SPCC = cast<ConstantSDNode>(LHS.getOperand(2))->getZExtValue();
784 LHS = CMPCC.getOperand(0);
785 RHS = CMPCC.getOperand(1);
789 SDValue SparcTargetLowering::LowerGlobalAddress(SDValue Op,
790 SelectionDAG &DAG) const {
791 const GlobalValue *GV = cast<GlobalAddressSDNode>(Op)->getGlobal();
792 // FIXME there isn't really any debug info here
793 DebugLoc dl = Op.getDebugLoc();
794 SDValue GA = DAG.getTargetGlobalAddress(GV, dl, MVT::i32);
795 SDValue Hi = DAG.getNode(SPISD::Hi, dl, MVT::i32, GA);
796 SDValue Lo = DAG.getNode(SPISD::Lo, dl, MVT::i32, GA);
798 if (getTargetMachine().getRelocationModel() != Reloc::PIC_)
799 return DAG.getNode(ISD::ADD, dl, MVT::i32, Lo, Hi);
801 SDValue GlobalBase = DAG.getNode(SPISD::GLOBAL_BASE_REG, dl,
803 SDValue RelAddr = DAG.getNode(ISD::ADD, dl, MVT::i32, Lo, Hi);
804 SDValue AbsAddr = DAG.getNode(ISD::ADD, dl, MVT::i32,
805 GlobalBase, RelAddr);
806 return DAG.getLoad(getPointerTy(), dl, DAG.getEntryNode(),
807 AbsAddr, MachinePointerInfo(), false, false, 0);
810 SDValue SparcTargetLowering::LowerConstantPool(SDValue Op,
811 SelectionDAG &DAG) const {
812 ConstantPoolSDNode *N = cast<ConstantPoolSDNode>(Op);
813 // FIXME there isn't really any debug info here
814 DebugLoc dl = Op.getDebugLoc();
815 const Constant *C = N->getConstVal();
816 SDValue CP = DAG.getTargetConstantPool(C, MVT::i32, N->getAlignment());
817 SDValue Hi = DAG.getNode(SPISD::Hi, dl, MVT::i32, CP);
818 SDValue Lo = DAG.getNode(SPISD::Lo, dl, MVT::i32, CP);
819 if (getTargetMachine().getRelocationModel() != Reloc::PIC_)
820 return DAG.getNode(ISD::ADD, dl, MVT::i32, Lo, Hi);
822 SDValue GlobalBase = DAG.getNode(SPISD::GLOBAL_BASE_REG, dl,
824 SDValue RelAddr = DAG.getNode(ISD::ADD, dl, MVT::i32, Lo, Hi);
825 SDValue AbsAddr = DAG.getNode(ISD::ADD, dl, MVT::i32,
826 GlobalBase, RelAddr);
827 return DAG.getLoad(getPointerTy(), dl, DAG.getEntryNode(),
828 AbsAddr, MachinePointerInfo(), false, false, 0);
831 static SDValue LowerFP_TO_SINT(SDValue Op, SelectionDAG &DAG) {
832 DebugLoc dl = Op.getDebugLoc();
833 // Convert the fp value to integer in an FP register.
834 assert(Op.getValueType() == MVT::i32);
835 Op = DAG.getNode(SPISD::FTOI, dl, MVT::f32, Op.getOperand(0));
836 return DAG.getNode(ISD::BITCAST, dl, MVT::i32, Op);
839 static SDValue LowerSINT_TO_FP(SDValue Op, SelectionDAG &DAG) {
840 DebugLoc dl = Op.getDebugLoc();
841 assert(Op.getOperand(0).getValueType() == MVT::i32);
842 SDValue Tmp = DAG.getNode(ISD::BITCAST, dl, MVT::f32, Op.getOperand(0));
843 // Convert the int value to FP in an FP register.
844 return DAG.getNode(SPISD::ITOF, dl, Op.getValueType(), Tmp);
847 static SDValue LowerBR_CC(SDValue Op, SelectionDAG &DAG) {
848 SDValue Chain = Op.getOperand(0);
849 ISD::CondCode CC = cast<CondCodeSDNode>(Op.getOperand(1))->get();
850 SDValue LHS = Op.getOperand(2);
851 SDValue RHS = Op.getOperand(3);
852 SDValue Dest = Op.getOperand(4);
853 DebugLoc dl = Op.getDebugLoc();
854 unsigned Opc, SPCC = ~0U;
856 // If this is a br_cc of a "setcc", and if the setcc got lowered into
857 // an CMP[IF]CC/SELECT_[IF]CC pair, find the original compared values.
858 LookThroughSetCC(LHS, RHS, CC, SPCC);
860 // Get the condition flag.
862 if (LHS.getValueType() == MVT::i32) {
863 std::vector<EVT> VTs;
864 VTs.push_back(MVT::i32);
865 VTs.push_back(MVT::Glue);
866 SDValue Ops[2] = { LHS, RHS };
867 CompareFlag = DAG.getNode(SPISD::CMPICC, dl, VTs, Ops, 2).getValue(1);
868 if (SPCC == ~0U) SPCC = IntCondCCodeToICC(CC);
871 CompareFlag = DAG.getNode(SPISD::CMPFCC, dl, MVT::Glue, LHS, RHS);
872 if (SPCC == ~0U) SPCC = FPCondCCodeToFCC(CC);
875 return DAG.getNode(Opc, dl, MVT::Other, Chain, Dest,
876 DAG.getConstant(SPCC, MVT::i32), CompareFlag);
879 static SDValue LowerSELECT_CC(SDValue Op, SelectionDAG &DAG) {
880 SDValue LHS = Op.getOperand(0);
881 SDValue RHS = Op.getOperand(1);
882 ISD::CondCode CC = cast<CondCodeSDNode>(Op.getOperand(4))->get();
883 SDValue TrueVal = Op.getOperand(2);
884 SDValue FalseVal = Op.getOperand(3);
885 DebugLoc dl = Op.getDebugLoc();
886 unsigned Opc, SPCC = ~0U;
888 // If this is a select_cc of a "setcc", and if the setcc got lowered into
889 // an CMP[IF]CC/SELECT_[IF]CC pair, find the original compared values.
890 LookThroughSetCC(LHS, RHS, CC, SPCC);
893 if (LHS.getValueType() == MVT::i32) {
894 std::vector<EVT> VTs;
895 VTs.push_back(LHS.getValueType()); // subcc returns a value
896 VTs.push_back(MVT::Glue);
897 SDValue Ops[2] = { LHS, RHS };
898 CompareFlag = DAG.getNode(SPISD::CMPICC, dl, VTs, Ops, 2).getValue(1);
899 Opc = SPISD::SELECT_ICC;
900 if (SPCC == ~0U) SPCC = IntCondCCodeToICC(CC);
902 CompareFlag = DAG.getNode(SPISD::CMPFCC, dl, MVT::Glue, LHS, RHS);
903 Opc = SPISD::SELECT_FCC;
904 if (SPCC == ~0U) SPCC = FPCondCCodeToFCC(CC);
906 return DAG.getNode(Opc, dl, TrueVal.getValueType(), TrueVal, FalseVal,
907 DAG.getConstant(SPCC, MVT::i32), CompareFlag);
910 static SDValue LowerVASTART(SDValue Op, SelectionDAG &DAG,
911 const SparcTargetLowering &TLI) {
912 MachineFunction &MF = DAG.getMachineFunction();
913 SparcMachineFunctionInfo *FuncInfo = MF.getInfo<SparcMachineFunctionInfo>();
915 // vastart just stores the address of the VarArgsFrameIndex slot into the
916 // memory location argument.
917 DebugLoc dl = Op.getDebugLoc();
919 DAG.getNode(ISD::ADD, dl, MVT::i32,
920 DAG.getRegister(SP::I6, MVT::i32),
921 DAG.getConstant(FuncInfo->getVarArgsFrameOffset(),
923 const Value *SV = cast<SrcValueSDNode>(Op.getOperand(2))->getValue();
924 return DAG.getStore(Op.getOperand(0), dl, Offset, Op.getOperand(1),
925 MachinePointerInfo(SV), false, false, 0);
928 static SDValue LowerVAARG(SDValue Op, SelectionDAG &DAG) {
929 SDNode *Node = Op.getNode();
930 EVT VT = Node->getValueType(0);
931 SDValue InChain = Node->getOperand(0);
932 SDValue VAListPtr = Node->getOperand(1);
933 const Value *SV = cast<SrcValueSDNode>(Node->getOperand(2))->getValue();
934 DebugLoc dl = Node->getDebugLoc();
935 SDValue VAList = DAG.getLoad(MVT::i32, dl, InChain, VAListPtr,
936 MachinePointerInfo(SV), false, false, 0);
937 // Increment the pointer, VAList, to the next vaarg
938 SDValue NextPtr = DAG.getNode(ISD::ADD, dl, MVT::i32, VAList,
939 DAG.getConstant(VT.getSizeInBits()/8,
941 // Store the incremented VAList to the legalized pointer
942 InChain = DAG.getStore(VAList.getValue(1), dl, NextPtr,
943 VAListPtr, MachinePointerInfo(SV), false, false, 0);
944 // Load the actual argument out of the pointer VAList, unless this is an
947 return DAG.getLoad(VT, dl, InChain, VAList, MachinePointerInfo(),
950 // Otherwise, load it as i64, then do a bitconvert.
951 SDValue V = DAG.getLoad(MVT::i64, dl, InChain, VAList, MachinePointerInfo(),
954 // Bit-Convert the value to f64.
956 DAG.getNode(ISD::BITCAST, dl, MVT::f64, V),
959 return DAG.getMergeValues(Ops, 2, dl);
962 static SDValue LowerDYNAMIC_STACKALLOC(SDValue Op, SelectionDAG &DAG) {
963 SDValue Chain = Op.getOperand(0); // Legalize the chain.
964 SDValue Size = Op.getOperand(1); // Legalize the size.
965 DebugLoc dl = Op.getDebugLoc();
967 unsigned SPReg = SP::O6;
968 SDValue SP = DAG.getCopyFromReg(Chain, dl, SPReg, MVT::i32);
969 SDValue NewSP = DAG.getNode(ISD::SUB, dl, MVT::i32, SP, Size); // Value
970 Chain = DAG.getCopyToReg(SP.getValue(1), dl, SPReg, NewSP); // Output chain
972 // The resultant pointer is actually 16 words from the bottom of the stack,
973 // to provide a register spill area.
974 SDValue NewVal = DAG.getNode(ISD::ADD, dl, MVT::i32, NewSP,
975 DAG.getConstant(96, MVT::i32));
976 SDValue Ops[2] = { NewVal, Chain };
977 return DAG.getMergeValues(Ops, 2, dl);
981 SDValue SparcTargetLowering::
982 LowerOperation(SDValue Op, SelectionDAG &DAG) const {
983 switch (Op.getOpcode()) {
984 default: llvm_unreachable("Should not custom lower this!");
985 // Frame & Return address. Currently unimplemented
986 case ISD::RETURNADDR: return SDValue();
987 case ISD::FRAMEADDR: return SDValue();
988 case ISD::GlobalTLSAddress:
989 llvm_unreachable("TLS not implemented for Sparc.");
990 case ISD::GlobalAddress: return LowerGlobalAddress(Op, DAG);
991 case ISD::ConstantPool: return LowerConstantPool(Op, DAG);
992 case ISD::FP_TO_SINT: return LowerFP_TO_SINT(Op, DAG);
993 case ISD::SINT_TO_FP: return LowerSINT_TO_FP(Op, DAG);
994 case ISD::BR_CC: return LowerBR_CC(Op, DAG);
995 case ISD::SELECT_CC: return LowerSELECT_CC(Op, DAG);
996 case ISD::VASTART: return LowerVASTART(Op, DAG, *this);
997 case ISD::VAARG: return LowerVAARG(Op, DAG);
998 case ISD::DYNAMIC_STACKALLOC: return LowerDYNAMIC_STACKALLOC(Op, DAG);
1003 SparcTargetLowering::EmitInstrWithCustomInserter(MachineInstr *MI,
1004 MachineBasicBlock *BB) const {
1005 const TargetInstrInfo &TII = *getTargetMachine().getInstrInfo();
1008 DebugLoc dl = MI->getDebugLoc();
1009 // Figure out the conditional branch opcode to use for this select_cc.
1010 switch (MI->getOpcode()) {
1011 default: llvm_unreachable("Unknown SELECT_CC!");
1012 case SP::SELECT_CC_Int_ICC:
1013 case SP::SELECT_CC_FP_ICC:
1014 case SP::SELECT_CC_DFP_ICC:
1015 BROpcode = SP::BCOND;
1017 case SP::SELECT_CC_Int_FCC:
1018 case SP::SELECT_CC_FP_FCC:
1019 case SP::SELECT_CC_DFP_FCC:
1020 BROpcode = SP::FBCOND;
1024 CC = (SPCC::CondCodes)MI->getOperand(3).getImm();
1026 // To "insert" a SELECT_CC instruction, we actually have to insert the diamond
1027 // control-flow pattern. The incoming instruction knows the destination vreg
1028 // to set, the condition code register to branch on, the true/false values to
1029 // select between, and a branch opcode to use.
1030 const BasicBlock *LLVM_BB = BB->getBasicBlock();
1031 MachineFunction::iterator It = BB;
1038 // fallthrough --> copy0MBB
1039 MachineBasicBlock *thisMBB = BB;
1040 MachineFunction *F = BB->getParent();
1041 MachineBasicBlock *copy0MBB = F->CreateMachineBasicBlock(LLVM_BB);
1042 MachineBasicBlock *sinkMBB = F->CreateMachineBasicBlock(LLVM_BB);
1043 F->insert(It, copy0MBB);
1044 F->insert(It, sinkMBB);
1046 // Transfer the remainder of BB and its successor edges to sinkMBB.
1047 sinkMBB->splice(sinkMBB->begin(), BB,
1048 llvm::next(MachineBasicBlock::iterator(MI)),
1050 sinkMBB->transferSuccessorsAndUpdatePHIs(BB);
1052 // Add the true and fallthrough blocks as its successors.
1053 BB->addSuccessor(copy0MBB);
1054 BB->addSuccessor(sinkMBB);
1056 BuildMI(BB, dl, TII.get(BROpcode)).addMBB(sinkMBB).addImm(CC);
1059 // %FalseValue = ...
1060 // # fallthrough to sinkMBB
1063 // Update machine-CFG edges
1064 BB->addSuccessor(sinkMBB);
1067 // %Result = phi [ %FalseValue, copy0MBB ], [ %TrueValue, thisMBB ]
1070 BuildMI(*BB, BB->begin(), dl, TII.get(SP::PHI), MI->getOperand(0).getReg())
1071 .addReg(MI->getOperand(2).getReg()).addMBB(copy0MBB)
1072 .addReg(MI->getOperand(1).getReg()).addMBB(thisMBB);
1074 MI->eraseFromParent(); // The pseudo instruction is gone now.
1078 //===----------------------------------------------------------------------===//
1079 // Sparc Inline Assembly Support
1080 //===----------------------------------------------------------------------===//
1082 /// getConstraintType - Given a constraint letter, return the type of
1083 /// constraint it is for this target.
1084 SparcTargetLowering::ConstraintType
1085 SparcTargetLowering::getConstraintType(const std::string &Constraint) const {
1086 if (Constraint.size() == 1) {
1087 switch (Constraint[0]) {
1089 case 'r': return C_RegisterClass;
1093 return TargetLowering::getConstraintType(Constraint);
1096 std::pair<unsigned, const TargetRegisterClass*>
1097 SparcTargetLowering::getRegForInlineAsmConstraint(const std::string &Constraint,
1099 if (Constraint.size() == 1) {
1100 switch (Constraint[0]) {
1102 return std::make_pair(0U, SP::IntRegsRegisterClass);
1106 return TargetLowering::getRegForInlineAsmConstraint(Constraint, VT);
1109 std::vector<unsigned> SparcTargetLowering::
1110 getRegClassForInlineAsmConstraint(const std::string &Constraint,
1112 if (Constraint.size() != 1)
1113 return std::vector<unsigned>();
1115 switch (Constraint[0]) {
1118 return make_vector<unsigned>(SP::L0, SP::L1, SP::L2, SP::L3,
1119 SP::L4, SP::L5, SP::L6, SP::L7,
1120 SP::I0, SP::I1, SP::I2, SP::I3,
1122 SP::O0, SP::O1, SP::O2, SP::O3,
1123 SP::O4, SP::O5, SP::O7, 0);
1126 return std::vector<unsigned>();
1130 SparcTargetLowering::isOffsetFoldingLegal(const GlobalAddressSDNode *GA) const {
1131 // The Sparc target isn't yet aware of offsets.
1135 /// getFunctionAlignment - Return the Log2 alignment of this function.
1136 unsigned SparcTargetLowering::getFunctionAlignment(const Function *) const {