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 "MCTargetDesc/SparcMCExpr.h"
17 #include "SparcMachineFunctionInfo.h"
18 #include "SparcRegisterInfo.h"
19 #include "SparcTargetMachine.h"
20 #include "SparcTargetObjectFile.h"
21 #include "llvm/CodeGen/CallingConvLower.h"
22 #include "llvm/CodeGen/MachineFrameInfo.h"
23 #include "llvm/CodeGen/MachineFunction.h"
24 #include "llvm/CodeGen/MachineInstrBuilder.h"
25 #include "llvm/CodeGen/MachineRegisterInfo.h"
26 #include "llvm/CodeGen/SelectionDAG.h"
27 #include "llvm/CodeGen/TargetLoweringObjectFileImpl.h"
28 #include "llvm/IR/DerivedTypes.h"
29 #include "llvm/IR/Function.h"
30 #include "llvm/IR/Module.h"
31 #include "llvm/Support/ErrorHandling.h"
35 //===----------------------------------------------------------------------===//
36 // Calling Convention Implementation
37 //===----------------------------------------------------------------------===//
39 static bool CC_Sparc_Assign_SRet(unsigned &ValNo, MVT &ValVT,
40 MVT &LocVT, CCValAssign::LocInfo &LocInfo,
41 ISD::ArgFlagsTy &ArgFlags, CCState &State)
43 assert (ArgFlags.isSRet());
45 // Assign SRet argument.
46 State.addLoc(CCValAssign::getCustomMem(ValNo, ValVT,
52 static bool CC_Sparc_Assign_f64(unsigned &ValNo, MVT &ValVT,
53 MVT &LocVT, CCValAssign::LocInfo &LocInfo,
54 ISD::ArgFlagsTy &ArgFlags, CCState &State)
56 static const uint16_t RegList[] = {
57 SP::I0, SP::I1, SP::I2, SP::I3, SP::I4, SP::I5
59 // Try to get first reg.
60 if (unsigned Reg = State.AllocateReg(RegList, 6)) {
61 State.addLoc(CCValAssign::getCustomReg(ValNo, ValVT, Reg, LocVT, LocInfo));
63 // Assign whole thing in stack.
64 State.addLoc(CCValAssign::getCustomMem(ValNo, ValVT,
65 State.AllocateStack(8,4),
70 // Try to get second reg.
71 if (unsigned Reg = State.AllocateReg(RegList, 6))
72 State.addLoc(CCValAssign::getCustomReg(ValNo, ValVT, Reg, LocVT, LocInfo));
74 State.addLoc(CCValAssign::getCustomMem(ValNo, ValVT,
75 State.AllocateStack(4,4),
80 // Allocate a full-sized argument for the 64-bit ABI.
81 static bool CC_Sparc64_Full(unsigned &ValNo, MVT &ValVT,
82 MVT &LocVT, CCValAssign::LocInfo &LocInfo,
83 ISD::ArgFlagsTy &ArgFlags, CCState &State) {
84 assert((LocVT == MVT::f32 || LocVT == MVT::f128
85 || LocVT.getSizeInBits() == 64) &&
86 "Can't handle non-64 bits locations");
88 // Stack space is allocated for all arguments starting from [%fp+BIAS+128].
89 unsigned size = (LocVT == MVT::f128) ? 16 : 8;
90 unsigned alignment = (LocVT == MVT::f128) ? 16 : 8;
91 unsigned Offset = State.AllocateStack(size, alignment);
94 if (LocVT == MVT::i64 && Offset < 6*8)
95 // Promote integers to %i0-%i5.
96 Reg = SP::I0 + Offset/8;
97 else if (LocVT == MVT::f64 && Offset < 16*8)
98 // Promote doubles to %d0-%d30. (Which LLVM calls D0-D15).
99 Reg = SP::D0 + Offset/8;
100 else if (LocVT == MVT::f32 && Offset < 16*8)
101 // Promote floats to %f1, %f3, ...
102 Reg = SP::F1 + Offset/4;
103 else if (LocVT == MVT::f128 && Offset < 16*8)
104 // Promote long doubles to %q0-%q28. (Which LLVM calls Q0-Q7).
105 Reg = SP::Q0 + Offset/16;
107 // Promote to register when possible, otherwise use the stack slot.
109 State.addLoc(CCValAssign::getReg(ValNo, ValVT, Reg, LocVT, LocInfo));
113 // This argument goes on the stack in an 8-byte slot.
114 // When passing floats, LocVT is smaller than 8 bytes. Adjust the offset to
115 // the right-aligned float. The first 4 bytes of the stack slot are undefined.
116 if (LocVT == MVT::f32)
119 State.addLoc(CCValAssign::getMem(ValNo, ValVT, Offset, LocVT, LocInfo));
123 // Allocate a half-sized argument for the 64-bit ABI.
125 // This is used when passing { float, int } structs by value in registers.
126 static bool CC_Sparc64_Half(unsigned &ValNo, MVT &ValVT,
127 MVT &LocVT, CCValAssign::LocInfo &LocInfo,
128 ISD::ArgFlagsTy &ArgFlags, CCState &State) {
129 assert(LocVT.getSizeInBits() == 32 && "Can't handle non-32 bits locations");
130 unsigned Offset = State.AllocateStack(4, 4);
132 if (LocVT == MVT::f32 && Offset < 16*8) {
133 // Promote floats to %f0-%f31.
134 State.addLoc(CCValAssign::getReg(ValNo, ValVT, SP::F0 + Offset/4,
139 if (LocVT == MVT::i32 && Offset < 6*8) {
140 // Promote integers to %i0-%i5, using half the register.
141 unsigned Reg = SP::I0 + Offset/8;
143 LocInfo = CCValAssign::AExt;
145 // Set the Custom bit if this i32 goes in the high bits of a register.
147 State.addLoc(CCValAssign::getCustomReg(ValNo, ValVT, Reg,
150 State.addLoc(CCValAssign::getReg(ValNo, ValVT, Reg, LocVT, LocInfo));
154 State.addLoc(CCValAssign::getMem(ValNo, ValVT, Offset, LocVT, LocInfo));
158 #include "SparcGenCallingConv.inc"
160 // The calling conventions in SparcCallingConv.td are described in terms of the
161 // callee's register window. This function translates registers to the
162 // corresponding caller window %o register.
163 static unsigned toCallerWindow(unsigned Reg) {
164 assert(SP::I0 + 7 == SP::I7 && SP::O0 + 7 == SP::O7 && "Unexpected enum");
165 if (Reg >= SP::I0 && Reg <= SP::I7)
166 return Reg - SP::I0 + SP::O0;
171 SparcTargetLowering::LowerReturn(SDValue Chain,
172 CallingConv::ID CallConv, bool IsVarArg,
173 const SmallVectorImpl<ISD::OutputArg> &Outs,
174 const SmallVectorImpl<SDValue> &OutVals,
175 SDLoc DL, SelectionDAG &DAG) const {
176 if (Subtarget->is64Bit())
177 return LowerReturn_64(Chain, CallConv, IsVarArg, Outs, OutVals, DL, DAG);
178 return LowerReturn_32(Chain, CallConv, IsVarArg, Outs, OutVals, DL, DAG);
182 SparcTargetLowering::LowerReturn_32(SDValue Chain,
183 CallingConv::ID CallConv, bool IsVarArg,
184 const SmallVectorImpl<ISD::OutputArg> &Outs,
185 const SmallVectorImpl<SDValue> &OutVals,
186 SDLoc DL, SelectionDAG &DAG) const {
187 MachineFunction &MF = DAG.getMachineFunction();
189 // CCValAssign - represent the assignment of the return value to locations.
190 SmallVector<CCValAssign, 16> RVLocs;
192 // CCState - Info about the registers and stack slot.
193 CCState CCInfo(CallConv, IsVarArg, DAG.getMachineFunction(),
194 DAG.getTarget(), RVLocs, *DAG.getContext());
196 // Analyze return values.
197 CCInfo.AnalyzeReturn(Outs, RetCC_Sparc32);
200 SmallVector<SDValue, 4> RetOps(1, Chain);
201 // Make room for the return address offset.
202 RetOps.push_back(SDValue());
204 // Copy the result values into the output registers.
205 for (unsigned i = 0; i != RVLocs.size(); ++i) {
206 CCValAssign &VA = RVLocs[i];
207 assert(VA.isRegLoc() && "Can only return in registers!");
209 Chain = DAG.getCopyToReg(Chain, DL, VA.getLocReg(),
212 // Guarantee that all emitted copies are stuck together with flags.
213 Flag = Chain.getValue(1);
214 RetOps.push_back(DAG.getRegister(VA.getLocReg(), VA.getLocVT()));
217 unsigned RetAddrOffset = 8; // Call Inst + Delay Slot
218 // If the function returns a struct, copy the SRetReturnReg to I0
219 if (MF.getFunction()->hasStructRetAttr()) {
220 SparcMachineFunctionInfo *SFI = MF.getInfo<SparcMachineFunctionInfo>();
221 unsigned Reg = SFI->getSRetReturnReg();
223 llvm_unreachable("sret virtual register not created in the entry block");
224 SDValue Val = DAG.getCopyFromReg(Chain, DL, Reg, getPointerTy());
225 Chain = DAG.getCopyToReg(Chain, DL, SP::I0, Val, Flag);
226 Flag = Chain.getValue(1);
227 RetOps.push_back(DAG.getRegister(SP::I0, getPointerTy()));
228 RetAddrOffset = 12; // CallInst + Delay Slot + Unimp
231 RetOps[0] = Chain; // Update chain.
232 RetOps[1] = DAG.getConstant(RetAddrOffset, MVT::i32);
234 // Add the flag if we have it.
236 RetOps.push_back(Flag);
238 return DAG.getNode(SPISD::RET_FLAG, DL, MVT::Other,
239 &RetOps[0], RetOps.size());
242 // Lower return values for the 64-bit ABI.
243 // Return values are passed the exactly the same way as function arguments.
245 SparcTargetLowering::LowerReturn_64(SDValue Chain,
246 CallingConv::ID CallConv, bool IsVarArg,
247 const SmallVectorImpl<ISD::OutputArg> &Outs,
248 const SmallVectorImpl<SDValue> &OutVals,
249 SDLoc DL, SelectionDAG &DAG) const {
250 // CCValAssign - represent the assignment of the return value to locations.
251 SmallVector<CCValAssign, 16> RVLocs;
253 // CCState - Info about the registers and stack slot.
254 CCState CCInfo(CallConv, IsVarArg, DAG.getMachineFunction(),
255 DAG.getTarget(), RVLocs, *DAG.getContext());
257 // Analyze return values.
258 CCInfo.AnalyzeReturn(Outs, RetCC_Sparc64);
261 SmallVector<SDValue, 4> RetOps(1, Chain);
263 // The second operand on the return instruction is the return address offset.
264 // The return address is always %i7+8 with the 64-bit ABI.
265 RetOps.push_back(DAG.getConstant(8, MVT::i32));
267 // Copy the result values into the output registers.
268 for (unsigned i = 0; i != RVLocs.size(); ++i) {
269 CCValAssign &VA = RVLocs[i];
270 assert(VA.isRegLoc() && "Can only return in registers!");
271 SDValue OutVal = OutVals[i];
273 // Integer return values must be sign or zero extended by the callee.
274 switch (VA.getLocInfo()) {
275 case CCValAssign::Full: break;
276 case CCValAssign::SExt:
277 OutVal = DAG.getNode(ISD::SIGN_EXTEND, DL, VA.getLocVT(), OutVal);
279 case CCValAssign::ZExt:
280 OutVal = DAG.getNode(ISD::ZERO_EXTEND, DL, VA.getLocVT(), OutVal);
282 case CCValAssign::AExt:
283 OutVal = DAG.getNode(ISD::ANY_EXTEND, DL, VA.getLocVT(), OutVal);
286 llvm_unreachable("Unknown loc info!");
289 // The custom bit on an i32 return value indicates that it should be passed
290 // in the high bits of the register.
291 if (VA.getValVT() == MVT::i32 && VA.needsCustom()) {
292 OutVal = DAG.getNode(ISD::SHL, DL, MVT::i64, OutVal,
293 DAG.getConstant(32, MVT::i32));
295 // The next value may go in the low bits of the same register.
296 // Handle both at once.
297 if (i+1 < RVLocs.size() && RVLocs[i+1].getLocReg() == VA.getLocReg()) {
298 SDValue NV = DAG.getNode(ISD::ZERO_EXTEND, DL, MVT::i64, OutVals[i+1]);
299 OutVal = DAG.getNode(ISD::OR, DL, MVT::i64, OutVal, NV);
300 // Skip the next value, it's already done.
305 Chain = DAG.getCopyToReg(Chain, DL, VA.getLocReg(), OutVal, Flag);
307 // Guarantee that all emitted copies are stuck together with flags.
308 Flag = Chain.getValue(1);
309 RetOps.push_back(DAG.getRegister(VA.getLocReg(), VA.getLocVT()));
312 RetOps[0] = Chain; // Update chain.
314 // Add the flag if we have it.
316 RetOps.push_back(Flag);
318 return DAG.getNode(SPISD::RET_FLAG, DL, MVT::Other,
319 &RetOps[0], RetOps.size());
322 SDValue SparcTargetLowering::
323 LowerFormalArguments(SDValue Chain,
324 CallingConv::ID CallConv,
326 const SmallVectorImpl<ISD::InputArg> &Ins,
329 SmallVectorImpl<SDValue> &InVals) const {
330 if (Subtarget->is64Bit())
331 return LowerFormalArguments_64(Chain, CallConv, IsVarArg, Ins,
333 return LowerFormalArguments_32(Chain, CallConv, IsVarArg, Ins,
337 /// LowerFormalArguments32 - V8 uses a very simple ABI, where all values are
338 /// passed in either one or two GPRs, including FP values. TODO: we should
339 /// pass FP values in FP registers for fastcc functions.
340 SDValue SparcTargetLowering::
341 LowerFormalArguments_32(SDValue Chain,
342 CallingConv::ID CallConv,
344 const SmallVectorImpl<ISD::InputArg> &Ins,
347 SmallVectorImpl<SDValue> &InVals) const {
348 MachineFunction &MF = DAG.getMachineFunction();
349 MachineRegisterInfo &RegInfo = MF.getRegInfo();
350 SparcMachineFunctionInfo *FuncInfo = MF.getInfo<SparcMachineFunctionInfo>();
352 // Assign locations to all of the incoming arguments.
353 SmallVector<CCValAssign, 16> ArgLocs;
354 CCState CCInfo(CallConv, isVarArg, DAG.getMachineFunction(),
355 getTargetMachine(), ArgLocs, *DAG.getContext());
356 CCInfo.AnalyzeFormalArguments(Ins, CC_Sparc32);
358 const unsigned StackOffset = 92;
360 for (unsigned i = 0, e = ArgLocs.size(); i != e; ++i) {
361 CCValAssign &VA = ArgLocs[i];
363 if (i == 0 && Ins[i].Flags.isSRet()) {
364 // Get SRet from [%fp+64].
365 int FrameIdx = MF.getFrameInfo()->CreateFixedObject(4, 64, true);
366 SDValue FIPtr = DAG.getFrameIndex(FrameIdx, MVT::i32);
367 SDValue Arg = DAG.getLoad(MVT::i32, dl, Chain, FIPtr,
368 MachinePointerInfo(),
369 false, false, false, 0);
370 InVals.push_back(Arg);
375 if (VA.needsCustom()) {
376 assert(VA.getLocVT() == MVT::f64);
377 unsigned VRegHi = RegInfo.createVirtualRegister(&SP::IntRegsRegClass);
378 MF.getRegInfo().addLiveIn(VA.getLocReg(), VRegHi);
379 SDValue HiVal = DAG.getCopyFromReg(Chain, dl, VRegHi, MVT::i32);
382 CCValAssign &NextVA = ArgLocs[++i];
385 if (NextVA.isMemLoc()) {
386 int FrameIdx = MF.getFrameInfo()->
387 CreateFixedObject(4, StackOffset+NextVA.getLocMemOffset(),true);
388 SDValue FIPtr = DAG.getFrameIndex(FrameIdx, MVT::i32);
389 LoVal = DAG.getLoad(MVT::i32, dl, Chain, FIPtr,
390 MachinePointerInfo(),
391 false, false, false, 0);
393 unsigned loReg = MF.addLiveIn(NextVA.getLocReg(),
394 &SP::IntRegsRegClass);
395 LoVal = DAG.getCopyFromReg(Chain, dl, loReg, MVT::i32);
398 DAG.getNode(ISD::BUILD_PAIR, dl, MVT::i64, LoVal, HiVal);
399 WholeValue = DAG.getNode(ISD::BITCAST, dl, MVT::f64, WholeValue);
400 InVals.push_back(WholeValue);
403 unsigned VReg = RegInfo.createVirtualRegister(&SP::IntRegsRegClass);
404 MF.getRegInfo().addLiveIn(VA.getLocReg(), VReg);
405 SDValue Arg = DAG.getCopyFromReg(Chain, dl, VReg, MVT::i32);
406 if (VA.getLocVT() == MVT::f32)
407 Arg = DAG.getNode(ISD::BITCAST, dl, MVT::f32, Arg);
408 else if (VA.getLocVT() != MVT::i32) {
409 Arg = DAG.getNode(ISD::AssertSext, dl, MVT::i32, Arg,
410 DAG.getValueType(VA.getLocVT()));
411 Arg = DAG.getNode(ISD::TRUNCATE, dl, VA.getLocVT(), Arg);
413 InVals.push_back(Arg);
417 assert(VA.isMemLoc());
419 unsigned Offset = VA.getLocMemOffset()+StackOffset;
421 if (VA.needsCustom()) {
422 assert(VA.getValVT() == MVT::f64);
423 // If it is double-word aligned, just load.
424 if (Offset % 8 == 0) {
425 int FI = MF.getFrameInfo()->CreateFixedObject(8,
428 SDValue FIPtr = DAG.getFrameIndex(FI, getPointerTy());
429 SDValue Load = DAG.getLoad(VA.getValVT(), dl, Chain, FIPtr,
430 MachinePointerInfo(),
431 false,false, false, 0);
432 InVals.push_back(Load);
436 int FI = MF.getFrameInfo()->CreateFixedObject(4,
439 SDValue FIPtr = DAG.getFrameIndex(FI, getPointerTy());
440 SDValue HiVal = DAG.getLoad(MVT::i32, dl, Chain, FIPtr,
441 MachinePointerInfo(),
442 false, false, false, 0);
443 int FI2 = MF.getFrameInfo()->CreateFixedObject(4,
446 SDValue FIPtr2 = DAG.getFrameIndex(FI2, getPointerTy());
448 SDValue LoVal = DAG.getLoad(MVT::i32, dl, Chain, FIPtr2,
449 MachinePointerInfo(),
450 false, false, false, 0);
453 DAG.getNode(ISD::BUILD_PAIR, dl, MVT::i64, LoVal, HiVal);
454 WholeValue = DAG.getNode(ISD::BITCAST, dl, MVT::f64, WholeValue);
455 InVals.push_back(WholeValue);
459 int FI = MF.getFrameInfo()->CreateFixedObject(4,
462 SDValue FIPtr = DAG.getFrameIndex(FI, getPointerTy());
464 if (VA.getValVT() == MVT::i32 || VA.getValVT() == MVT::f32) {
465 Load = DAG.getLoad(VA.getValVT(), dl, Chain, FIPtr,
466 MachinePointerInfo(),
467 false, false, false, 0);
469 ISD::LoadExtType LoadOp = ISD::SEXTLOAD;
470 // Sparc is big endian, so add an offset based on the ObjectVT.
471 unsigned Offset = 4-std::max(1U, VA.getValVT().getSizeInBits()/8);
472 FIPtr = DAG.getNode(ISD::ADD, dl, MVT::i32, FIPtr,
473 DAG.getConstant(Offset, MVT::i32));
474 Load = DAG.getExtLoad(LoadOp, dl, MVT::i32, Chain, FIPtr,
475 MachinePointerInfo(),
476 VA.getValVT(), false, false,0);
477 Load = DAG.getNode(ISD::TRUNCATE, dl, VA.getValVT(), Load);
479 InVals.push_back(Load);
482 if (MF.getFunction()->hasStructRetAttr()) {
483 // Copy the SRet Argument to SRetReturnReg.
484 SparcMachineFunctionInfo *SFI = MF.getInfo<SparcMachineFunctionInfo>();
485 unsigned Reg = SFI->getSRetReturnReg();
487 Reg = MF.getRegInfo().createVirtualRegister(&SP::IntRegsRegClass);
488 SFI->setSRetReturnReg(Reg);
490 SDValue Copy = DAG.getCopyToReg(DAG.getEntryNode(), dl, Reg, InVals[0]);
491 Chain = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Copy, Chain);
494 // Store remaining ArgRegs to the stack if this is a varargs function.
496 static const uint16_t ArgRegs[] = {
497 SP::I0, SP::I1, SP::I2, SP::I3, SP::I4, SP::I5
499 unsigned NumAllocated = CCInfo.getFirstUnallocated(ArgRegs, 6);
500 const uint16_t *CurArgReg = ArgRegs+NumAllocated, *ArgRegEnd = ArgRegs+6;
501 unsigned ArgOffset = CCInfo.getNextStackOffset();
502 if (NumAllocated == 6)
503 ArgOffset += StackOffset;
506 ArgOffset = 68+4*NumAllocated;
509 // Remember the vararg offset for the va_start implementation.
510 FuncInfo->setVarArgsFrameOffset(ArgOffset);
512 std::vector<SDValue> OutChains;
514 for (; CurArgReg != ArgRegEnd; ++CurArgReg) {
515 unsigned VReg = RegInfo.createVirtualRegister(&SP::IntRegsRegClass);
516 MF.getRegInfo().addLiveIn(*CurArgReg, VReg);
517 SDValue Arg = DAG.getCopyFromReg(DAG.getRoot(), dl, VReg, MVT::i32);
519 int FrameIdx = MF.getFrameInfo()->CreateFixedObject(4, ArgOffset,
521 SDValue FIPtr = DAG.getFrameIndex(FrameIdx, MVT::i32);
523 OutChains.push_back(DAG.getStore(DAG.getRoot(), dl, Arg, FIPtr,
524 MachinePointerInfo(),
529 if (!OutChains.empty()) {
530 OutChains.push_back(Chain);
531 Chain = DAG.getNode(ISD::TokenFactor, dl, MVT::Other,
532 &OutChains[0], OutChains.size());
539 // Lower formal arguments for the 64 bit ABI.
540 SDValue SparcTargetLowering::
541 LowerFormalArguments_64(SDValue Chain,
542 CallingConv::ID CallConv,
544 const SmallVectorImpl<ISD::InputArg> &Ins,
547 SmallVectorImpl<SDValue> &InVals) const {
548 MachineFunction &MF = DAG.getMachineFunction();
550 // Analyze arguments according to CC_Sparc64.
551 SmallVector<CCValAssign, 16> ArgLocs;
552 CCState CCInfo(CallConv, IsVarArg, DAG.getMachineFunction(),
553 getTargetMachine(), ArgLocs, *DAG.getContext());
554 CCInfo.AnalyzeFormalArguments(Ins, CC_Sparc64);
556 // The argument array begins at %fp+BIAS+128, after the register save area.
557 const unsigned ArgArea = 128;
559 for (unsigned i = 0, e = ArgLocs.size(); i != e; ++i) {
560 CCValAssign &VA = ArgLocs[i];
562 // This argument is passed in a register.
563 // All integer register arguments are promoted by the caller to i64.
565 // Create a virtual register for the promoted live-in value.
566 unsigned VReg = MF.addLiveIn(VA.getLocReg(),
567 getRegClassFor(VA.getLocVT()));
568 SDValue Arg = DAG.getCopyFromReg(Chain, DL, VReg, VA.getLocVT());
570 // Get the high bits for i32 struct elements.
571 if (VA.getValVT() == MVT::i32 && VA.needsCustom())
572 Arg = DAG.getNode(ISD::SRL, DL, VA.getLocVT(), Arg,
573 DAG.getConstant(32, MVT::i32));
575 // The caller promoted the argument, so insert an Assert?ext SDNode so we
576 // won't promote the value again in this function.
577 switch (VA.getLocInfo()) {
578 case CCValAssign::SExt:
579 Arg = DAG.getNode(ISD::AssertSext, DL, VA.getLocVT(), Arg,
580 DAG.getValueType(VA.getValVT()));
582 case CCValAssign::ZExt:
583 Arg = DAG.getNode(ISD::AssertZext, DL, VA.getLocVT(), Arg,
584 DAG.getValueType(VA.getValVT()));
590 // Truncate the register down to the argument type.
592 Arg = DAG.getNode(ISD::TRUNCATE, DL, VA.getValVT(), Arg);
594 InVals.push_back(Arg);
598 // The registers are exhausted. This argument was passed on the stack.
599 assert(VA.isMemLoc());
600 // The CC_Sparc64_Full/Half functions compute stack offsets relative to the
601 // beginning of the arguments area at %fp+BIAS+128.
602 unsigned Offset = VA.getLocMemOffset() + ArgArea;
603 unsigned ValSize = VA.getValVT().getSizeInBits() / 8;
604 // Adjust offset for extended arguments, SPARC is big-endian.
605 // The caller will have written the full slot with extended bytes, but we
606 // prefer our own extending loads.
608 Offset += 8 - ValSize;
609 int FI = MF.getFrameInfo()->CreateFixedObject(ValSize, Offset, true);
610 InVals.push_back(DAG.getLoad(VA.getValVT(), DL, Chain,
611 DAG.getFrameIndex(FI, getPointerTy()),
612 MachinePointerInfo::getFixedStack(FI),
613 false, false, false, 0));
619 // This function takes variable arguments, some of which may have been passed
620 // in registers %i0-%i5. Variable floating point arguments are never passed
621 // in floating point registers. They go on %i0-%i5 or on the stack like
622 // integer arguments.
624 // The va_start intrinsic needs to know the offset to the first variable
626 unsigned ArgOffset = CCInfo.getNextStackOffset();
627 SparcMachineFunctionInfo *FuncInfo = MF.getInfo<SparcMachineFunctionInfo>();
628 // Skip the 128 bytes of register save area.
629 FuncInfo->setVarArgsFrameOffset(ArgOffset + ArgArea +
630 Subtarget->getStackPointerBias());
632 // Save the variable arguments that were passed in registers.
633 // The caller is required to reserve stack space for 6 arguments regardless
634 // of how many arguments were actually passed.
635 SmallVector<SDValue, 8> OutChains;
636 for (; ArgOffset < 6*8; ArgOffset += 8) {
637 unsigned VReg = MF.addLiveIn(SP::I0 + ArgOffset/8, &SP::I64RegsRegClass);
638 SDValue VArg = DAG.getCopyFromReg(Chain, DL, VReg, MVT::i64);
639 int FI = MF.getFrameInfo()->CreateFixedObject(8, ArgOffset + ArgArea, true);
640 OutChains.push_back(DAG.getStore(Chain, DL, VArg,
641 DAG.getFrameIndex(FI, getPointerTy()),
642 MachinePointerInfo::getFixedStack(FI),
646 if (!OutChains.empty())
647 Chain = DAG.getNode(ISD::TokenFactor, DL, MVT::Other,
648 &OutChains[0], OutChains.size());
654 SparcTargetLowering::LowerCall(TargetLowering::CallLoweringInfo &CLI,
655 SmallVectorImpl<SDValue> &InVals) const {
656 if (Subtarget->is64Bit())
657 return LowerCall_64(CLI, InVals);
658 return LowerCall_32(CLI, InVals);
661 static bool hasReturnsTwiceAttr(SelectionDAG &DAG, SDValue Callee,
662 ImmutableCallSite *CS) {
664 return CS->hasFnAttr(Attribute::ReturnsTwice);
666 const Function *CalleeFn = 0;
667 if (GlobalAddressSDNode *G = dyn_cast<GlobalAddressSDNode>(Callee)) {
668 CalleeFn = dyn_cast<Function>(G->getGlobal());
669 } else if (ExternalSymbolSDNode *E =
670 dyn_cast<ExternalSymbolSDNode>(Callee)) {
671 const Function *Fn = DAG.getMachineFunction().getFunction();
672 const Module *M = Fn->getParent();
673 const char *CalleeName = E->getSymbol();
674 CalleeFn = M->getFunction(CalleeName);
679 return CalleeFn->hasFnAttribute(Attribute::ReturnsTwice);
682 // Lower a call for the 32-bit ABI.
684 SparcTargetLowering::LowerCall_32(TargetLowering::CallLoweringInfo &CLI,
685 SmallVectorImpl<SDValue> &InVals) const {
686 SelectionDAG &DAG = CLI.DAG;
688 SmallVectorImpl<ISD::OutputArg> &Outs = CLI.Outs;
689 SmallVectorImpl<SDValue> &OutVals = CLI.OutVals;
690 SmallVectorImpl<ISD::InputArg> &Ins = CLI.Ins;
691 SDValue Chain = CLI.Chain;
692 SDValue Callee = CLI.Callee;
693 bool &isTailCall = CLI.IsTailCall;
694 CallingConv::ID CallConv = CLI.CallConv;
695 bool isVarArg = CLI.IsVarArg;
697 // Sparc target does not yet support tail call optimization.
700 // Analyze operands of the call, assigning locations to each operand.
701 SmallVector<CCValAssign, 16> ArgLocs;
702 CCState CCInfo(CallConv, isVarArg, DAG.getMachineFunction(),
703 DAG.getTarget(), ArgLocs, *DAG.getContext());
704 CCInfo.AnalyzeCallOperands(Outs, CC_Sparc32);
706 // Get the size of the outgoing arguments stack space requirement.
707 unsigned ArgsSize = CCInfo.getNextStackOffset();
709 // Keep stack frames 8-byte aligned.
710 ArgsSize = (ArgsSize+7) & ~7;
712 MachineFrameInfo *MFI = DAG.getMachineFunction().getFrameInfo();
714 // Create local copies for byval args.
715 SmallVector<SDValue, 8> ByValArgs;
716 for (unsigned i = 0, e = Outs.size(); i != e; ++i) {
717 ISD::ArgFlagsTy Flags = Outs[i].Flags;
718 if (!Flags.isByVal())
721 SDValue Arg = OutVals[i];
722 unsigned Size = Flags.getByValSize();
723 unsigned Align = Flags.getByValAlign();
725 int FI = MFI->CreateStackObject(Size, Align, false);
726 SDValue FIPtr = DAG.getFrameIndex(FI, getPointerTy());
727 SDValue SizeNode = DAG.getConstant(Size, MVT::i32);
729 Chain = DAG.getMemcpy(Chain, dl, FIPtr, Arg, SizeNode, Align,
730 false, // isVolatile,
731 (Size <= 32), // AlwaysInline if size <= 32
732 MachinePointerInfo(), MachinePointerInfo());
733 ByValArgs.push_back(FIPtr);
736 Chain = DAG.getCALLSEQ_START(Chain, DAG.getIntPtrConstant(ArgsSize, true),
739 SmallVector<std::pair<unsigned, SDValue>, 8> RegsToPass;
740 SmallVector<SDValue, 8> MemOpChains;
742 const unsigned StackOffset = 92;
743 bool hasStructRetAttr = false;
744 // Walk the register/memloc assignments, inserting copies/loads.
745 for (unsigned i = 0, realArgIdx = 0, byvalArgIdx = 0, e = ArgLocs.size();
748 CCValAssign &VA = ArgLocs[i];
749 SDValue Arg = OutVals[realArgIdx];
751 ISD::ArgFlagsTy Flags = Outs[realArgIdx].Flags;
753 // Use local copy if it is a byval arg.
755 Arg = ByValArgs[byvalArgIdx++];
757 // Promote the value if needed.
758 switch (VA.getLocInfo()) {
759 default: llvm_unreachable("Unknown loc info!");
760 case CCValAssign::Full: break;
761 case CCValAssign::SExt:
762 Arg = DAG.getNode(ISD::SIGN_EXTEND, dl, VA.getLocVT(), Arg);
764 case CCValAssign::ZExt:
765 Arg = DAG.getNode(ISD::ZERO_EXTEND, dl, VA.getLocVT(), Arg);
767 case CCValAssign::AExt:
768 Arg = DAG.getNode(ISD::ANY_EXTEND, dl, VA.getLocVT(), Arg);
770 case CCValAssign::BCvt:
771 Arg = DAG.getNode(ISD::BITCAST, dl, VA.getLocVT(), Arg);
775 if (Flags.isSRet()) {
776 assert(VA.needsCustom());
777 // store SRet argument in %sp+64
778 SDValue StackPtr = DAG.getRegister(SP::O6, MVT::i32);
779 SDValue PtrOff = DAG.getIntPtrConstant(64);
780 PtrOff = DAG.getNode(ISD::ADD, dl, MVT::i32, StackPtr, PtrOff);
781 MemOpChains.push_back(DAG.getStore(Chain, dl, Arg, PtrOff,
782 MachinePointerInfo(),
784 hasStructRetAttr = true;
788 if (VA.needsCustom()) {
789 assert(VA.getLocVT() == MVT::f64);
792 unsigned Offset = VA.getLocMemOffset() + StackOffset;
793 // if it is double-word aligned, just store.
794 if (Offset % 8 == 0) {
795 SDValue StackPtr = DAG.getRegister(SP::O6, MVT::i32);
796 SDValue PtrOff = DAG.getIntPtrConstant(Offset);
797 PtrOff = DAG.getNode(ISD::ADD, dl, MVT::i32, StackPtr, PtrOff);
798 MemOpChains.push_back(DAG.getStore(Chain, dl, Arg, PtrOff,
799 MachinePointerInfo(),
805 SDValue StackPtr = DAG.CreateStackTemporary(MVT::f64, MVT::i32);
806 SDValue Store = DAG.getStore(DAG.getEntryNode(), dl,
807 Arg, StackPtr, MachinePointerInfo(),
809 // Sparc is big-endian, so the high part comes first.
810 SDValue Hi = DAG.getLoad(MVT::i32, dl, Store, StackPtr,
811 MachinePointerInfo(), false, false, false, 0);
812 // Increment the pointer to the other half.
813 StackPtr = DAG.getNode(ISD::ADD, dl, StackPtr.getValueType(), StackPtr,
814 DAG.getIntPtrConstant(4));
815 // Load the low part.
816 SDValue Lo = DAG.getLoad(MVT::i32, dl, Store, StackPtr,
817 MachinePointerInfo(), false, false, false, 0);
820 RegsToPass.push_back(std::make_pair(VA.getLocReg(), Hi));
822 CCValAssign &NextVA = ArgLocs[++i];
823 if (NextVA.isRegLoc()) {
824 RegsToPass.push_back(std::make_pair(NextVA.getLocReg(), Lo));
826 // Store the low part in stack.
827 unsigned Offset = NextVA.getLocMemOffset() + StackOffset;
828 SDValue StackPtr = DAG.getRegister(SP::O6, MVT::i32);
829 SDValue PtrOff = DAG.getIntPtrConstant(Offset);
830 PtrOff = DAG.getNode(ISD::ADD, dl, MVT::i32, StackPtr, PtrOff);
831 MemOpChains.push_back(DAG.getStore(Chain, dl, Lo, PtrOff,
832 MachinePointerInfo(),
836 unsigned Offset = VA.getLocMemOffset() + StackOffset;
837 // Store the high part.
838 SDValue StackPtr = DAG.getRegister(SP::O6, MVT::i32);
839 SDValue PtrOff = DAG.getIntPtrConstant(Offset);
840 PtrOff = DAG.getNode(ISD::ADD, dl, MVT::i32, StackPtr, PtrOff);
841 MemOpChains.push_back(DAG.getStore(Chain, dl, Hi, PtrOff,
842 MachinePointerInfo(),
844 // Store the low part.
845 PtrOff = DAG.getIntPtrConstant(Offset+4);
846 PtrOff = DAG.getNode(ISD::ADD, dl, MVT::i32, StackPtr, PtrOff);
847 MemOpChains.push_back(DAG.getStore(Chain, dl, Lo, PtrOff,
848 MachinePointerInfo(),
854 // Arguments that can be passed on register must be kept at
857 if (VA.getLocVT() != MVT::f32) {
858 RegsToPass.push_back(std::make_pair(VA.getLocReg(), Arg));
861 Arg = DAG.getNode(ISD::BITCAST, dl, MVT::i32, Arg);
862 RegsToPass.push_back(std::make_pair(VA.getLocReg(), Arg));
866 assert(VA.isMemLoc());
868 // Create a store off the stack pointer for this argument.
869 SDValue StackPtr = DAG.getRegister(SP::O6, MVT::i32);
870 SDValue PtrOff = DAG.getIntPtrConstant(VA.getLocMemOffset()+StackOffset);
871 PtrOff = DAG.getNode(ISD::ADD, dl, MVT::i32, StackPtr, PtrOff);
872 MemOpChains.push_back(DAG.getStore(Chain, dl, Arg, PtrOff,
873 MachinePointerInfo(),
878 // Emit all stores, make sure the occur before any copies into physregs.
879 if (!MemOpChains.empty())
880 Chain = DAG.getNode(ISD::TokenFactor, dl, MVT::Other,
881 &MemOpChains[0], MemOpChains.size());
883 // Build a sequence of copy-to-reg nodes chained together with token
884 // chain and flag operands which copy the outgoing args into registers.
885 // The InFlag in necessary since all emitted instructions must be
888 for (unsigned i = 0, e = RegsToPass.size(); i != e; ++i) {
889 unsigned Reg = toCallerWindow(RegsToPass[i].first);
890 Chain = DAG.getCopyToReg(Chain, dl, Reg, RegsToPass[i].second, InFlag);
891 InFlag = Chain.getValue(1);
894 unsigned SRetArgSize = (hasStructRetAttr)? getSRetArgSize(DAG, Callee):0;
895 bool hasReturnsTwice = hasReturnsTwiceAttr(DAG, Callee, CLI.CS);
897 // If the callee is a GlobalAddress node (quite common, every direct call is)
898 // turn it into a TargetGlobalAddress node so that legalize doesn't hack it.
899 // Likewise ExternalSymbol -> TargetExternalSymbol.
900 unsigned TF = ((getTargetMachine().getRelocationModel() == Reloc::PIC_)
901 ? SparcMCExpr::VK_Sparc_WPLT30 : 0);
902 if (GlobalAddressSDNode *G = dyn_cast<GlobalAddressSDNode>(Callee))
903 Callee = DAG.getTargetGlobalAddress(G->getGlobal(), dl, MVT::i32, 0, TF);
904 else if (ExternalSymbolSDNode *E = dyn_cast<ExternalSymbolSDNode>(Callee))
905 Callee = DAG.getTargetExternalSymbol(E->getSymbol(), MVT::i32, TF);
907 // Returns a chain & a flag for retval copy to use
908 SDVTList NodeTys = DAG.getVTList(MVT::Other, MVT::Glue);
909 SmallVector<SDValue, 8> Ops;
910 Ops.push_back(Chain);
911 Ops.push_back(Callee);
912 if (hasStructRetAttr)
913 Ops.push_back(DAG.getTargetConstant(SRetArgSize, MVT::i32));
914 for (unsigned i = 0, e = RegsToPass.size(); i != e; ++i)
915 Ops.push_back(DAG.getRegister(toCallerWindow(RegsToPass[i].first),
916 RegsToPass[i].second.getValueType()));
918 // Add a register mask operand representing the call-preserved registers.
919 const SparcRegisterInfo *TRI =
920 ((const SparcTargetMachine&)getTargetMachine()).getRegisterInfo();
921 const uint32_t *Mask = ((hasReturnsTwice)
922 ? TRI->getRTCallPreservedMask(CallConv)
923 : TRI->getCallPreservedMask(CallConv));
924 assert(Mask && "Missing call preserved mask for calling convention");
925 Ops.push_back(DAG.getRegisterMask(Mask));
927 if (InFlag.getNode())
928 Ops.push_back(InFlag);
930 Chain = DAG.getNode(SPISD::CALL, dl, NodeTys, &Ops[0], Ops.size());
931 InFlag = Chain.getValue(1);
933 Chain = DAG.getCALLSEQ_END(Chain, DAG.getIntPtrConstant(ArgsSize, true),
934 DAG.getIntPtrConstant(0, true), InFlag, dl);
935 InFlag = Chain.getValue(1);
937 // Assign locations to each value returned by this call.
938 SmallVector<CCValAssign, 16> RVLocs;
939 CCState RVInfo(CallConv, isVarArg, DAG.getMachineFunction(),
940 DAG.getTarget(), RVLocs, *DAG.getContext());
942 RVInfo.AnalyzeCallResult(Ins, RetCC_Sparc32);
944 // Copy all of the result registers out of their specified physreg.
945 for (unsigned i = 0; i != RVLocs.size(); ++i) {
946 Chain = DAG.getCopyFromReg(Chain, dl, toCallerWindow(RVLocs[i].getLocReg()),
947 RVLocs[i].getValVT(), InFlag).getValue(1);
948 InFlag = Chain.getValue(2);
949 InVals.push_back(Chain.getValue(0));
955 // This functions returns true if CalleeName is a ABI function that returns
956 // a long double (fp128).
957 static bool isFP128ABICall(const char *CalleeName)
959 static const char *const ABICalls[] =
960 { "_Q_add", "_Q_sub", "_Q_mul", "_Q_div",
962 "_Q_itoq", "_Q_stoq", "_Q_dtoq", "_Q_utoq",
963 "_Q_lltoq", "_Q_ulltoq",
966 for (const char * const *I = ABICalls; *I != 0; ++I)
967 if (strcmp(CalleeName, *I) == 0)
973 SparcTargetLowering::getSRetArgSize(SelectionDAG &DAG, SDValue Callee) const
975 const Function *CalleeFn = 0;
976 if (GlobalAddressSDNode *G = dyn_cast<GlobalAddressSDNode>(Callee)) {
977 CalleeFn = dyn_cast<Function>(G->getGlobal());
978 } else if (ExternalSymbolSDNode *E =
979 dyn_cast<ExternalSymbolSDNode>(Callee)) {
980 const Function *Fn = DAG.getMachineFunction().getFunction();
981 const Module *M = Fn->getParent();
982 const char *CalleeName = E->getSymbol();
983 CalleeFn = M->getFunction(CalleeName);
984 if (!CalleeFn && isFP128ABICall(CalleeName))
985 return 16; // Return sizeof(fp128)
991 assert(CalleeFn->hasStructRetAttr() &&
992 "Callee does not have the StructRet attribute.");
994 PointerType *Ty = cast<PointerType>(CalleeFn->arg_begin()->getType());
995 Type *ElementTy = Ty->getElementType();
996 return getDataLayout()->getTypeAllocSize(ElementTy);
1000 // Fixup floating point arguments in the ... part of a varargs call.
1002 // The SPARC v9 ABI requires that floating point arguments are treated the same
1003 // as integers when calling a varargs function. This does not apply to the
1004 // fixed arguments that are part of the function's prototype.
1006 // This function post-processes a CCValAssign array created by
1007 // AnalyzeCallOperands().
1008 static void fixupVariableFloatArgs(SmallVectorImpl<CCValAssign> &ArgLocs,
1009 ArrayRef<ISD::OutputArg> Outs) {
1010 for (unsigned i = 0, e = ArgLocs.size(); i != e; ++i) {
1011 const CCValAssign &VA = ArgLocs[i];
1012 MVT ValTy = VA.getLocVT();
1013 // FIXME: What about f32 arguments? C promotes them to f64 when calling
1014 // varargs functions.
1015 if (!VA.isRegLoc() || (ValTy != MVT::f64 && ValTy != MVT::f128))
1017 // The fixed arguments to a varargs function still go in FP registers.
1018 if (Outs[VA.getValNo()].IsFixed)
1021 // This floating point argument should be reassigned.
1024 // Determine the offset into the argument array.
1025 unsigned firstReg = (ValTy == MVT::f64) ? SP::D0 : SP::Q0;
1026 unsigned argSize = (ValTy == MVT::f64) ? 8 : 16;
1027 unsigned Offset = argSize * (VA.getLocReg() - firstReg);
1028 assert(Offset < 16*8 && "Offset out of range, bad register enum?");
1031 // This argument should go in %i0-%i5.
1032 unsigned IReg = SP::I0 + Offset/8;
1033 if (ValTy == MVT::f64)
1034 // Full register, just bitconvert into i64.
1035 NewVA = CCValAssign::getReg(VA.getValNo(), VA.getValVT(),
1036 IReg, MVT::i64, CCValAssign::BCvt);
1038 assert(ValTy == MVT::f128 && "Unexpected type!");
1039 // Full register, just bitconvert into i128 -- We will lower this into
1040 // two i64s in LowerCall_64.
1041 NewVA = CCValAssign::getCustomReg(VA.getValNo(), VA.getValVT(),
1042 IReg, MVT::i128, CCValAssign::BCvt);
1045 // This needs to go to memory, we're out of integer registers.
1046 NewVA = CCValAssign::getMem(VA.getValNo(), VA.getValVT(),
1047 Offset, VA.getLocVT(), VA.getLocInfo());
1053 // Lower a call for the 64-bit ABI.
1055 SparcTargetLowering::LowerCall_64(TargetLowering::CallLoweringInfo &CLI,
1056 SmallVectorImpl<SDValue> &InVals) const {
1057 SelectionDAG &DAG = CLI.DAG;
1059 SDValue Chain = CLI.Chain;
1061 // Sparc target does not yet support tail call optimization.
1062 CLI.IsTailCall = false;
1064 // Analyze operands of the call, assigning locations to each operand.
1065 SmallVector<CCValAssign, 16> ArgLocs;
1066 CCState CCInfo(CLI.CallConv, CLI.IsVarArg, DAG.getMachineFunction(),
1067 DAG.getTarget(), ArgLocs, *DAG.getContext());
1068 CCInfo.AnalyzeCallOperands(CLI.Outs, CC_Sparc64);
1070 // Get the size of the outgoing arguments stack space requirement.
1071 // The stack offset computed by CC_Sparc64 includes all arguments.
1072 // Called functions expect 6 argument words to exist in the stack frame, used
1074 unsigned ArgsSize = std::max(6*8u, CCInfo.getNextStackOffset());
1076 // Keep stack frames 16-byte aligned.
1077 ArgsSize = RoundUpToAlignment(ArgsSize, 16);
1079 // Varargs calls require special treatment.
1081 fixupVariableFloatArgs(ArgLocs, CLI.Outs);
1083 // Adjust the stack pointer to make room for the arguments.
1084 // FIXME: Use hasReservedCallFrame to avoid %sp adjustments around all calls
1085 // with more than 6 arguments.
1086 Chain = DAG.getCALLSEQ_START(Chain, DAG.getIntPtrConstant(ArgsSize, true),
1089 // Collect the set of registers to pass to the function and their values.
1090 // This will be emitted as a sequence of CopyToReg nodes glued to the call
1092 SmallVector<std::pair<unsigned, SDValue>, 8> RegsToPass;
1094 // Collect chains from all the memory opeations that copy arguments to the
1095 // stack. They must follow the stack pointer adjustment above and precede the
1096 // call instruction itself.
1097 SmallVector<SDValue, 8> MemOpChains;
1099 for (unsigned i = 0, e = ArgLocs.size(); i != e; ++i) {
1100 const CCValAssign &VA = ArgLocs[i];
1101 SDValue Arg = CLI.OutVals[i];
1103 // Promote the value if needed.
1104 switch (VA.getLocInfo()) {
1106 llvm_unreachable("Unknown location info!");
1107 case CCValAssign::Full:
1109 case CCValAssign::SExt:
1110 Arg = DAG.getNode(ISD::SIGN_EXTEND, DL, VA.getLocVT(), Arg);
1112 case CCValAssign::ZExt:
1113 Arg = DAG.getNode(ISD::ZERO_EXTEND, DL, VA.getLocVT(), Arg);
1115 case CCValAssign::AExt:
1116 Arg = DAG.getNode(ISD::ANY_EXTEND, DL, VA.getLocVT(), Arg);
1118 case CCValAssign::BCvt:
1119 // fixupVariableFloatArgs() may create bitcasts from f128 to i128. But
1120 // SPARC does not support i128 natively. Lower it into two i64, see below.
1121 if (!VA.needsCustom() || VA.getValVT() != MVT::f128
1122 || VA.getLocVT() != MVT::i128)
1123 Arg = DAG.getNode(ISD::BITCAST, DL, VA.getLocVT(), Arg);
1127 if (VA.isRegLoc()) {
1128 if (VA.needsCustom() && VA.getValVT() == MVT::f128
1129 && VA.getLocVT() == MVT::i128) {
1130 // Store and reload into the interger register reg and reg+1.
1131 unsigned Offset = 8 * (VA.getLocReg() - SP::I0);
1132 unsigned StackOffset = Offset + Subtarget->getStackPointerBias() + 128;
1133 SDValue StackPtr = DAG.getRegister(SP::O6, getPointerTy());
1134 SDValue HiPtrOff = DAG.getIntPtrConstant(StackOffset);
1135 HiPtrOff = DAG.getNode(ISD::ADD, DL, getPointerTy(), StackPtr,
1137 SDValue LoPtrOff = DAG.getIntPtrConstant(StackOffset + 8);
1138 LoPtrOff = DAG.getNode(ISD::ADD, DL, getPointerTy(), StackPtr,
1141 // Store to %sp+BIAS+128+Offset
1142 SDValue Store = DAG.getStore(Chain, DL, Arg, HiPtrOff,
1143 MachinePointerInfo(),
1145 // Load into Reg and Reg+1
1146 SDValue Hi64 = DAG.getLoad(MVT::i64, DL, Store, HiPtrOff,
1147 MachinePointerInfo(),
1148 false, false, false, 0);
1149 SDValue Lo64 = DAG.getLoad(MVT::i64, DL, Store, LoPtrOff,
1150 MachinePointerInfo(),
1151 false, false, false, 0);
1152 RegsToPass.push_back(std::make_pair(toCallerWindow(VA.getLocReg()),
1154 RegsToPass.push_back(std::make_pair(toCallerWindow(VA.getLocReg()+1),
1159 // The custom bit on an i32 return value indicates that it should be
1160 // passed in the high bits of the register.
1161 if (VA.getValVT() == MVT::i32 && VA.needsCustom()) {
1162 Arg = DAG.getNode(ISD::SHL, DL, MVT::i64, Arg,
1163 DAG.getConstant(32, MVT::i32));
1165 // The next value may go in the low bits of the same register.
1166 // Handle both at once.
1167 if (i+1 < ArgLocs.size() && ArgLocs[i+1].isRegLoc() &&
1168 ArgLocs[i+1].getLocReg() == VA.getLocReg()) {
1169 SDValue NV = DAG.getNode(ISD::ZERO_EXTEND, DL, MVT::i64,
1171 Arg = DAG.getNode(ISD::OR, DL, MVT::i64, Arg, NV);
1172 // Skip the next value, it's already done.
1176 RegsToPass.push_back(std::make_pair(toCallerWindow(VA.getLocReg()), Arg));
1180 assert(VA.isMemLoc());
1182 // Create a store off the stack pointer for this argument.
1183 SDValue StackPtr = DAG.getRegister(SP::O6, getPointerTy());
1184 // The argument area starts at %fp+BIAS+128 in the callee frame,
1185 // %sp+BIAS+128 in ours.
1186 SDValue PtrOff = DAG.getIntPtrConstant(VA.getLocMemOffset() +
1187 Subtarget->getStackPointerBias() +
1189 PtrOff = DAG.getNode(ISD::ADD, DL, getPointerTy(), StackPtr, PtrOff);
1190 MemOpChains.push_back(DAG.getStore(Chain, DL, Arg, PtrOff,
1191 MachinePointerInfo(),
1195 // Emit all stores, make sure they occur before the call.
1196 if (!MemOpChains.empty())
1197 Chain = DAG.getNode(ISD::TokenFactor, DL, MVT::Other,
1198 &MemOpChains[0], MemOpChains.size());
1200 // Build a sequence of CopyToReg nodes glued together with token chain and
1201 // glue operands which copy the outgoing args into registers. The InGlue is
1202 // necessary since all emitted instructions must be stuck together in order
1203 // to pass the live physical registers.
1205 for (unsigned i = 0, e = RegsToPass.size(); i != e; ++i) {
1206 Chain = DAG.getCopyToReg(Chain, DL,
1207 RegsToPass[i].first, RegsToPass[i].second, InGlue);
1208 InGlue = Chain.getValue(1);
1211 // If the callee is a GlobalAddress node (quite common, every direct call is)
1212 // turn it into a TargetGlobalAddress node so that legalize doesn't hack it.
1213 // Likewise ExternalSymbol -> TargetExternalSymbol.
1214 SDValue Callee = CLI.Callee;
1215 bool hasReturnsTwice = hasReturnsTwiceAttr(DAG, Callee, CLI.CS);
1216 unsigned TF = ((getTargetMachine().getRelocationModel() == Reloc::PIC_)
1217 ? SparcMCExpr::VK_Sparc_WPLT30 : 0);
1218 if (GlobalAddressSDNode *G = dyn_cast<GlobalAddressSDNode>(Callee))
1219 Callee = DAG.getTargetGlobalAddress(G->getGlobal(), DL, getPointerTy(), 0,
1221 else if (ExternalSymbolSDNode *E = dyn_cast<ExternalSymbolSDNode>(Callee))
1222 Callee = DAG.getTargetExternalSymbol(E->getSymbol(), getPointerTy(), TF);
1224 // Build the operands for the call instruction itself.
1225 SmallVector<SDValue, 8> Ops;
1226 Ops.push_back(Chain);
1227 Ops.push_back(Callee);
1228 for (unsigned i = 0, e = RegsToPass.size(); i != e; ++i)
1229 Ops.push_back(DAG.getRegister(RegsToPass[i].first,
1230 RegsToPass[i].second.getValueType()));
1232 // Add a register mask operand representing the call-preserved registers.
1233 const SparcRegisterInfo *TRI =
1234 ((const SparcTargetMachine&)getTargetMachine()).getRegisterInfo();
1235 const uint32_t *Mask = ((hasReturnsTwice)
1236 ? TRI->getRTCallPreservedMask(CLI.CallConv)
1237 : TRI->getCallPreservedMask(CLI.CallConv));
1238 assert(Mask && "Missing call preserved mask for calling convention");
1239 Ops.push_back(DAG.getRegisterMask(Mask));
1241 // Make sure the CopyToReg nodes are glued to the call instruction which
1242 // consumes the registers.
1243 if (InGlue.getNode())
1244 Ops.push_back(InGlue);
1246 // Now the call itself.
1247 SDVTList NodeTys = DAG.getVTList(MVT::Other, MVT::Glue);
1248 Chain = DAG.getNode(SPISD::CALL, DL, NodeTys, &Ops[0], Ops.size());
1249 InGlue = Chain.getValue(1);
1251 // Revert the stack pointer immediately after the call.
1252 Chain = DAG.getCALLSEQ_END(Chain, DAG.getIntPtrConstant(ArgsSize, true),
1253 DAG.getIntPtrConstant(0, true), InGlue, DL);
1254 InGlue = Chain.getValue(1);
1256 // Now extract the return values. This is more or less the same as
1257 // LowerFormalArguments_64.
1259 // Assign locations to each value returned by this call.
1260 SmallVector<CCValAssign, 16> RVLocs;
1261 CCState RVInfo(CLI.CallConv, CLI.IsVarArg, DAG.getMachineFunction(),
1262 DAG.getTarget(), RVLocs, *DAG.getContext());
1264 // Set inreg flag manually for codegen generated library calls that
1266 if (CLI.Ins.size() == 1 && CLI.Ins[0].VT == MVT::f32 && CLI.CS == 0)
1267 CLI.Ins[0].Flags.setInReg();
1269 RVInfo.AnalyzeCallResult(CLI.Ins, RetCC_Sparc64);
1271 // Copy all of the result registers out of their specified physreg.
1272 for (unsigned i = 0; i != RVLocs.size(); ++i) {
1273 CCValAssign &VA = RVLocs[i];
1274 unsigned Reg = toCallerWindow(VA.getLocReg());
1276 // When returning 'inreg {i32, i32 }', two consecutive i32 arguments can
1277 // reside in the same register in the high and low bits. Reuse the
1278 // CopyFromReg previous node to avoid duplicate copies.
1280 if (RegisterSDNode *SrcReg = dyn_cast<RegisterSDNode>(Chain.getOperand(1)))
1281 if (SrcReg->getReg() == Reg && Chain->getOpcode() == ISD::CopyFromReg)
1282 RV = Chain.getValue(0);
1284 // But usually we'll create a new CopyFromReg for a different register.
1285 if (!RV.getNode()) {
1286 RV = DAG.getCopyFromReg(Chain, DL, Reg, RVLocs[i].getLocVT(), InGlue);
1287 Chain = RV.getValue(1);
1288 InGlue = Chain.getValue(2);
1291 // Get the high bits for i32 struct elements.
1292 if (VA.getValVT() == MVT::i32 && VA.needsCustom())
1293 RV = DAG.getNode(ISD::SRL, DL, VA.getLocVT(), RV,
1294 DAG.getConstant(32, MVT::i32));
1296 // The callee promoted the return value, so insert an Assert?ext SDNode so
1297 // we won't promote the value again in this function.
1298 switch (VA.getLocInfo()) {
1299 case CCValAssign::SExt:
1300 RV = DAG.getNode(ISD::AssertSext, DL, VA.getLocVT(), RV,
1301 DAG.getValueType(VA.getValVT()));
1303 case CCValAssign::ZExt:
1304 RV = DAG.getNode(ISD::AssertZext, DL, VA.getLocVT(), RV,
1305 DAG.getValueType(VA.getValVT()));
1311 // Truncate the register down to the return value type.
1312 if (VA.isExtInLoc())
1313 RV = DAG.getNode(ISD::TRUNCATE, DL, VA.getValVT(), RV);
1315 InVals.push_back(RV);
1321 //===----------------------------------------------------------------------===//
1322 // TargetLowering Implementation
1323 //===----------------------------------------------------------------------===//
1325 /// IntCondCCodeToICC - Convert a DAG integer condition code to a SPARC ICC
1327 static SPCC::CondCodes IntCondCCodeToICC(ISD::CondCode CC) {
1329 default: llvm_unreachable("Unknown integer condition code!");
1330 case ISD::SETEQ: return SPCC::ICC_E;
1331 case ISD::SETNE: return SPCC::ICC_NE;
1332 case ISD::SETLT: return SPCC::ICC_L;
1333 case ISD::SETGT: return SPCC::ICC_G;
1334 case ISD::SETLE: return SPCC::ICC_LE;
1335 case ISD::SETGE: return SPCC::ICC_GE;
1336 case ISD::SETULT: return SPCC::ICC_CS;
1337 case ISD::SETULE: return SPCC::ICC_LEU;
1338 case ISD::SETUGT: return SPCC::ICC_GU;
1339 case ISD::SETUGE: return SPCC::ICC_CC;
1343 /// FPCondCCodeToFCC - Convert a DAG floatingp oint condition code to a SPARC
1345 static SPCC::CondCodes FPCondCCodeToFCC(ISD::CondCode CC) {
1347 default: llvm_unreachable("Unknown fp condition code!");
1349 case ISD::SETOEQ: return SPCC::FCC_E;
1351 case ISD::SETUNE: return SPCC::FCC_NE;
1353 case ISD::SETOLT: return SPCC::FCC_L;
1355 case ISD::SETOGT: return SPCC::FCC_G;
1357 case ISD::SETOLE: return SPCC::FCC_LE;
1359 case ISD::SETOGE: return SPCC::FCC_GE;
1360 case ISD::SETULT: return SPCC::FCC_UL;
1361 case ISD::SETULE: return SPCC::FCC_ULE;
1362 case ISD::SETUGT: return SPCC::FCC_UG;
1363 case ISD::SETUGE: return SPCC::FCC_UGE;
1364 case ISD::SETUO: return SPCC::FCC_U;
1365 case ISD::SETO: return SPCC::FCC_O;
1366 case ISD::SETONE: return SPCC::FCC_LG;
1367 case ISD::SETUEQ: return SPCC::FCC_UE;
1371 SparcTargetLowering::SparcTargetLowering(TargetMachine &TM)
1372 : TargetLowering(TM, new SparcELFTargetObjectFile()) {
1373 Subtarget = &TM.getSubtarget<SparcSubtarget>();
1375 // Set up the register classes.
1376 addRegisterClass(MVT::i32, &SP::IntRegsRegClass);
1377 addRegisterClass(MVT::f32, &SP::FPRegsRegClass);
1378 addRegisterClass(MVT::f64, &SP::DFPRegsRegClass);
1379 addRegisterClass(MVT::f128, &SP::QFPRegsRegClass);
1380 if (Subtarget->is64Bit())
1381 addRegisterClass(MVT::i64, &SP::I64RegsRegClass);
1383 // Turn FP extload into load/fextend
1384 setLoadExtAction(ISD::EXTLOAD, MVT::f32, Expand);
1385 setLoadExtAction(ISD::EXTLOAD, MVT::f64, Expand);
1387 // Sparc doesn't have i1 sign extending load
1388 setLoadExtAction(ISD::SEXTLOAD, MVT::i1, Promote);
1390 // Turn FP truncstore into trunc + store.
1391 setTruncStoreAction(MVT::f64, MVT::f32, Expand);
1392 setTruncStoreAction(MVT::f128, MVT::f32, Expand);
1393 setTruncStoreAction(MVT::f128, MVT::f64, Expand);
1395 // Custom legalize GlobalAddress nodes into LO/HI parts.
1396 setOperationAction(ISD::GlobalAddress, getPointerTy(), Custom);
1397 setOperationAction(ISD::GlobalTLSAddress, getPointerTy(), Custom);
1398 setOperationAction(ISD::ConstantPool, getPointerTy(), Custom);
1399 setOperationAction(ISD::BlockAddress, getPointerTy(), Custom);
1401 // Sparc doesn't have sext_inreg, replace them with shl/sra
1402 setOperationAction(ISD::SIGN_EXTEND_INREG, MVT::i16, Expand);
1403 setOperationAction(ISD::SIGN_EXTEND_INREG, MVT::i8 , Expand);
1404 setOperationAction(ISD::SIGN_EXTEND_INREG, MVT::i1 , Expand);
1406 // Sparc has no REM or DIVREM operations.
1407 setOperationAction(ISD::UREM, MVT::i32, Expand);
1408 setOperationAction(ISD::SREM, MVT::i32, Expand);
1409 setOperationAction(ISD::SDIVREM, MVT::i32, Expand);
1410 setOperationAction(ISD::UDIVREM, MVT::i32, Expand);
1412 // ... nor does SparcV9.
1413 if (Subtarget->is64Bit()) {
1414 setOperationAction(ISD::UREM, MVT::i64, Expand);
1415 setOperationAction(ISD::SREM, MVT::i64, Expand);
1416 setOperationAction(ISD::SDIVREM, MVT::i64, Expand);
1417 setOperationAction(ISD::UDIVREM, MVT::i64, Expand);
1420 // Custom expand fp<->sint
1421 setOperationAction(ISD::FP_TO_SINT, MVT::i32, Custom);
1422 setOperationAction(ISD::SINT_TO_FP, MVT::i32, Custom);
1423 setOperationAction(ISD::FP_TO_SINT, MVT::i64, Custom);
1424 setOperationAction(ISD::SINT_TO_FP, MVT::i64, Custom);
1426 // Custom Expand fp<->uint
1427 setOperationAction(ISD::FP_TO_UINT, MVT::i32, Custom);
1428 setOperationAction(ISD::UINT_TO_FP, MVT::i32, Custom);
1429 setOperationAction(ISD::FP_TO_UINT, MVT::i64, Custom);
1430 setOperationAction(ISD::UINT_TO_FP, MVT::i64, Custom);
1432 setOperationAction(ISD::BITCAST, MVT::f32, Expand);
1433 setOperationAction(ISD::BITCAST, MVT::i32, Expand);
1435 // Sparc has no select or setcc: expand to SELECT_CC.
1436 setOperationAction(ISD::SELECT, MVT::i32, Expand);
1437 setOperationAction(ISD::SELECT, MVT::f32, Expand);
1438 setOperationAction(ISD::SELECT, MVT::f64, Expand);
1439 setOperationAction(ISD::SELECT, MVT::f128, Expand);
1441 setOperationAction(ISD::SETCC, MVT::i32, Expand);
1442 setOperationAction(ISD::SETCC, MVT::f32, Expand);
1443 setOperationAction(ISD::SETCC, MVT::f64, Expand);
1444 setOperationAction(ISD::SETCC, MVT::f128, Expand);
1446 // Sparc doesn't have BRCOND either, it has BR_CC.
1447 setOperationAction(ISD::BRCOND, MVT::Other, Expand);
1448 setOperationAction(ISD::BRIND, MVT::Other, Expand);
1449 setOperationAction(ISD::BR_JT, MVT::Other, Expand);
1450 setOperationAction(ISD::BR_CC, MVT::i32, Custom);
1451 setOperationAction(ISD::BR_CC, MVT::f32, Custom);
1452 setOperationAction(ISD::BR_CC, MVT::f64, Custom);
1453 setOperationAction(ISD::BR_CC, MVT::f128, Custom);
1455 setOperationAction(ISD::SELECT_CC, MVT::i32, Custom);
1456 setOperationAction(ISD::SELECT_CC, MVT::f32, Custom);
1457 setOperationAction(ISD::SELECT_CC, MVT::f64, Custom);
1458 setOperationAction(ISD::SELECT_CC, MVT::f128, Custom);
1460 if (Subtarget->is64Bit()) {
1461 setOperationAction(ISD::ADDC, MVT::i64, Custom);
1462 setOperationAction(ISD::ADDE, MVT::i64, Custom);
1463 setOperationAction(ISD::SUBC, MVT::i64, Custom);
1464 setOperationAction(ISD::SUBE, MVT::i64, Custom);
1465 setOperationAction(ISD::BITCAST, MVT::f64, Expand);
1466 setOperationAction(ISD::BITCAST, MVT::i64, Expand);
1467 setOperationAction(ISD::SELECT, MVT::i64, Expand);
1468 setOperationAction(ISD::SETCC, MVT::i64, Expand);
1469 setOperationAction(ISD::BR_CC, MVT::i64, Custom);
1470 setOperationAction(ISD::SELECT_CC, MVT::i64, Custom);
1472 setOperationAction(ISD::CTPOP, MVT::i64,
1473 Subtarget->usePopc() ? Legal : Expand);
1474 setOperationAction(ISD::CTTZ , MVT::i64, Expand);
1475 setOperationAction(ISD::CTTZ_ZERO_UNDEF, MVT::i64, Expand);
1476 setOperationAction(ISD::CTLZ , MVT::i64, Expand);
1477 setOperationAction(ISD::CTLZ_ZERO_UNDEF, MVT::i64, Expand);
1478 setOperationAction(ISD::BSWAP, MVT::i64, Expand);
1479 setOperationAction(ISD::ROTL , MVT::i64, Expand);
1480 setOperationAction(ISD::ROTR , MVT::i64, Expand);
1481 setOperationAction(ISD::DYNAMIC_STACKALLOC, MVT::i64, Custom);
1485 // FIXME: We insert fences for each atomics and generate sub-optimal code
1486 // for PSO/TSO. Also, implement other atomicrmw operations.
1488 setInsertFencesForAtomic(true);
1490 setOperationAction(ISD::ATOMIC_SWAP, MVT::i32, Legal);
1491 setOperationAction(ISD::ATOMIC_CMP_SWAP, MVT::i32,
1492 (Subtarget->isV9() ? Legal: Expand));
1495 setOperationAction(ISD::ATOMIC_FENCE, MVT::Other, Legal);
1497 // Custom Lower Atomic LOAD/STORE
1498 setOperationAction(ISD::ATOMIC_LOAD, MVT::i32, Custom);
1499 setOperationAction(ISD::ATOMIC_STORE, MVT::i32, Custom);
1501 if (Subtarget->is64Bit()) {
1502 setOperationAction(ISD::ATOMIC_CMP_SWAP, MVT::i64, Legal);
1503 setOperationAction(ISD::ATOMIC_SWAP, MVT::i64, Legal);
1504 setOperationAction(ISD::ATOMIC_LOAD, MVT::i64, Custom);
1505 setOperationAction(ISD::ATOMIC_STORE, MVT::i64, Custom);
1508 if (!Subtarget->isV9()) {
1509 // SparcV8 does not have FNEGD and FABSD.
1510 setOperationAction(ISD::FNEG, MVT::f64, Custom);
1511 setOperationAction(ISD::FABS, MVT::f64, Custom);
1514 setOperationAction(ISD::FSIN , MVT::f128, Expand);
1515 setOperationAction(ISD::FCOS , MVT::f128, Expand);
1516 setOperationAction(ISD::FSINCOS, MVT::f128, Expand);
1517 setOperationAction(ISD::FREM , MVT::f128, Expand);
1518 setOperationAction(ISD::FMA , MVT::f128, Expand);
1519 setOperationAction(ISD::FSIN , MVT::f64, Expand);
1520 setOperationAction(ISD::FCOS , MVT::f64, Expand);
1521 setOperationAction(ISD::FSINCOS, MVT::f64, Expand);
1522 setOperationAction(ISD::FREM , MVT::f64, Expand);
1523 setOperationAction(ISD::FMA , MVT::f64, Expand);
1524 setOperationAction(ISD::FSIN , MVT::f32, Expand);
1525 setOperationAction(ISD::FCOS , MVT::f32, Expand);
1526 setOperationAction(ISD::FSINCOS, MVT::f32, Expand);
1527 setOperationAction(ISD::FREM , MVT::f32, Expand);
1528 setOperationAction(ISD::FMA , MVT::f32, Expand);
1529 setOperationAction(ISD::CTTZ , MVT::i32, Expand);
1530 setOperationAction(ISD::CTTZ_ZERO_UNDEF, MVT::i32, Expand);
1531 setOperationAction(ISD::CTLZ , MVT::i32, Expand);
1532 setOperationAction(ISD::CTLZ_ZERO_UNDEF, MVT::i32, Expand);
1533 setOperationAction(ISD::ROTL , MVT::i32, Expand);
1534 setOperationAction(ISD::ROTR , MVT::i32, Expand);
1535 setOperationAction(ISD::BSWAP, MVT::i32, Expand);
1536 setOperationAction(ISD::FCOPYSIGN, MVT::f128, Expand);
1537 setOperationAction(ISD::FCOPYSIGN, MVT::f64, Expand);
1538 setOperationAction(ISD::FCOPYSIGN, MVT::f32, Expand);
1539 setOperationAction(ISD::FPOW , MVT::f128, Expand);
1540 setOperationAction(ISD::FPOW , MVT::f64, Expand);
1541 setOperationAction(ISD::FPOW , MVT::f32, Expand);
1543 setOperationAction(ISD::SHL_PARTS, MVT::i32, Expand);
1544 setOperationAction(ISD::SRA_PARTS, MVT::i32, Expand);
1545 setOperationAction(ISD::SRL_PARTS, MVT::i32, Expand);
1547 // FIXME: Sparc provides these multiplies, but we don't have them yet.
1548 setOperationAction(ISD::UMUL_LOHI, MVT::i32, Expand);
1549 setOperationAction(ISD::SMUL_LOHI, MVT::i32, Expand);
1551 if (Subtarget->is64Bit()) {
1552 setOperationAction(ISD::UMUL_LOHI, MVT::i64, Expand);
1553 setOperationAction(ISD::SMUL_LOHI, MVT::i64, Expand);
1554 setOperationAction(ISD::MULHU, MVT::i64, Expand);
1555 setOperationAction(ISD::MULHS, MVT::i64, Expand);
1557 setOperationAction(ISD::UMULO, MVT::i64, Custom);
1558 setOperationAction(ISD::SMULO, MVT::i64, Custom);
1561 // VASTART needs to be custom lowered to use the VarArgsFrameIndex.
1562 setOperationAction(ISD::VASTART , MVT::Other, Custom);
1563 // VAARG needs to be lowered to not do unaligned accesses for doubles.
1564 setOperationAction(ISD::VAARG , MVT::Other, Custom);
1566 // Use the default implementation.
1567 setOperationAction(ISD::VACOPY , MVT::Other, Expand);
1568 setOperationAction(ISD::VAEND , MVT::Other, Expand);
1569 setOperationAction(ISD::STACKSAVE , MVT::Other, Expand);
1570 setOperationAction(ISD::STACKRESTORE , MVT::Other, Expand);
1571 setOperationAction(ISD::DYNAMIC_STACKALLOC, MVT::i32 , Custom);
1573 setExceptionPointerRegister(SP::I0);
1574 setExceptionSelectorRegister(SP::I1);
1576 setStackPointerRegisterToSaveRestore(SP::O6);
1578 setOperationAction(ISD::CTPOP, MVT::i32,
1579 Subtarget->usePopc() ? Legal : Expand);
1581 if (Subtarget->isV9() && Subtarget->hasHardQuad()) {
1582 setOperationAction(ISD::LOAD, MVT::f128, Legal);
1583 setOperationAction(ISD::STORE, MVT::f128, Legal);
1585 setOperationAction(ISD::LOAD, MVT::f128, Custom);
1586 setOperationAction(ISD::STORE, MVT::f128, Custom);
1589 if (Subtarget->hasHardQuad()) {
1590 setOperationAction(ISD::FADD, MVT::f128, Legal);
1591 setOperationAction(ISD::FSUB, MVT::f128, Legal);
1592 setOperationAction(ISD::FMUL, MVT::f128, Legal);
1593 setOperationAction(ISD::FDIV, MVT::f128, Legal);
1594 setOperationAction(ISD::FSQRT, MVT::f128, Legal);
1595 setOperationAction(ISD::FP_EXTEND, MVT::f128, Legal);
1596 setOperationAction(ISD::FP_ROUND, MVT::f64, Legal);
1597 if (Subtarget->isV9()) {
1598 setOperationAction(ISD::FNEG, MVT::f128, Legal);
1599 setOperationAction(ISD::FABS, MVT::f128, Legal);
1601 setOperationAction(ISD::FNEG, MVT::f128, Custom);
1602 setOperationAction(ISD::FABS, MVT::f128, Custom);
1605 if (!Subtarget->is64Bit()) {
1606 setLibcallName(RTLIB::FPTOSINT_F128_I64, "_Q_qtoll");
1607 setLibcallName(RTLIB::FPTOUINT_F128_I64, "_Q_qtoull");
1608 setLibcallName(RTLIB::SINTTOFP_I64_F128, "_Q_lltoq");
1609 setLibcallName(RTLIB::UINTTOFP_I64_F128, "_Q_ulltoq");
1613 // Custom legalize f128 operations.
1615 setOperationAction(ISD::FADD, MVT::f128, Custom);
1616 setOperationAction(ISD::FSUB, MVT::f128, Custom);
1617 setOperationAction(ISD::FMUL, MVT::f128, Custom);
1618 setOperationAction(ISD::FDIV, MVT::f128, Custom);
1619 setOperationAction(ISD::FSQRT, MVT::f128, Custom);
1620 setOperationAction(ISD::FNEG, MVT::f128, Custom);
1621 setOperationAction(ISD::FABS, MVT::f128, Custom);
1623 setOperationAction(ISD::FP_EXTEND, MVT::f128, Custom);
1624 setOperationAction(ISD::FP_ROUND, MVT::f64, Custom);
1625 setOperationAction(ISD::FP_ROUND, MVT::f32, Custom);
1627 // Setup Runtime library names.
1628 if (Subtarget->is64Bit()) {
1629 setLibcallName(RTLIB::ADD_F128, "_Qp_add");
1630 setLibcallName(RTLIB::SUB_F128, "_Qp_sub");
1631 setLibcallName(RTLIB::MUL_F128, "_Qp_mul");
1632 setLibcallName(RTLIB::DIV_F128, "_Qp_div");
1633 setLibcallName(RTLIB::SQRT_F128, "_Qp_sqrt");
1634 setLibcallName(RTLIB::FPTOSINT_F128_I32, "_Qp_qtoi");
1635 setLibcallName(RTLIB::FPTOUINT_F128_I32, "_Qp_qtoui");
1636 setLibcallName(RTLIB::SINTTOFP_I32_F128, "_Qp_itoq");
1637 setLibcallName(RTLIB::UINTTOFP_I32_F128, "_Qp_uitoq");
1638 setLibcallName(RTLIB::FPTOSINT_F128_I64, "_Qp_qtox");
1639 setLibcallName(RTLIB::FPTOUINT_F128_I64, "_Qp_qtoux");
1640 setLibcallName(RTLIB::SINTTOFP_I64_F128, "_Qp_xtoq");
1641 setLibcallName(RTLIB::UINTTOFP_I64_F128, "_Qp_uxtoq");
1642 setLibcallName(RTLIB::FPEXT_F32_F128, "_Qp_stoq");
1643 setLibcallName(RTLIB::FPEXT_F64_F128, "_Qp_dtoq");
1644 setLibcallName(RTLIB::FPROUND_F128_F32, "_Qp_qtos");
1645 setLibcallName(RTLIB::FPROUND_F128_F64, "_Qp_qtod");
1647 setLibcallName(RTLIB::ADD_F128, "_Q_add");
1648 setLibcallName(RTLIB::SUB_F128, "_Q_sub");
1649 setLibcallName(RTLIB::MUL_F128, "_Q_mul");
1650 setLibcallName(RTLIB::DIV_F128, "_Q_div");
1651 setLibcallName(RTLIB::SQRT_F128, "_Q_sqrt");
1652 setLibcallName(RTLIB::FPTOSINT_F128_I32, "_Q_qtoi");
1653 setLibcallName(RTLIB::FPTOUINT_F128_I32, "_Q_qtou");
1654 setLibcallName(RTLIB::SINTTOFP_I32_F128, "_Q_itoq");
1655 setLibcallName(RTLIB::UINTTOFP_I32_F128, "_Q_utoq");
1656 setLibcallName(RTLIB::FPTOSINT_F128_I64, "_Q_qtoll");
1657 setLibcallName(RTLIB::FPTOUINT_F128_I64, "_Q_qtoull");
1658 setLibcallName(RTLIB::SINTTOFP_I64_F128, "_Q_lltoq");
1659 setLibcallName(RTLIB::UINTTOFP_I64_F128, "_Q_ulltoq");
1660 setLibcallName(RTLIB::FPEXT_F32_F128, "_Q_stoq");
1661 setLibcallName(RTLIB::FPEXT_F64_F128, "_Q_dtoq");
1662 setLibcallName(RTLIB::FPROUND_F128_F32, "_Q_qtos");
1663 setLibcallName(RTLIB::FPROUND_F128_F64, "_Q_qtod");
1667 setMinFunctionAlignment(2);
1669 computeRegisterProperties();
1672 const char *SparcTargetLowering::getTargetNodeName(unsigned Opcode) const {
1675 case SPISD::CMPICC: return "SPISD::CMPICC";
1676 case SPISD::CMPFCC: return "SPISD::CMPFCC";
1677 case SPISD::BRICC: return "SPISD::BRICC";
1678 case SPISD::BRXCC: return "SPISD::BRXCC";
1679 case SPISD::BRFCC: return "SPISD::BRFCC";
1680 case SPISD::SELECT_ICC: return "SPISD::SELECT_ICC";
1681 case SPISD::SELECT_XCC: return "SPISD::SELECT_XCC";
1682 case SPISD::SELECT_FCC: return "SPISD::SELECT_FCC";
1683 case SPISD::Hi: return "SPISD::Hi";
1684 case SPISD::Lo: return "SPISD::Lo";
1685 case SPISD::FTOI: return "SPISD::FTOI";
1686 case SPISD::ITOF: return "SPISD::ITOF";
1687 case SPISD::FTOX: return "SPISD::FTOX";
1688 case SPISD::XTOF: return "SPISD::XTOF";
1689 case SPISD::CALL: return "SPISD::CALL";
1690 case SPISD::RET_FLAG: return "SPISD::RET_FLAG";
1691 case SPISD::GLOBAL_BASE_REG: return "SPISD::GLOBAL_BASE_REG";
1692 case SPISD::FLUSHW: return "SPISD::FLUSHW";
1693 case SPISD::TLS_ADD: return "SPISD::TLS_ADD";
1694 case SPISD::TLS_LD: return "SPISD::TLS_LD";
1695 case SPISD::TLS_CALL: return "SPISD::TLS_CALL";
1699 EVT SparcTargetLowering::getSetCCResultType(LLVMContext &, EVT VT) const {
1702 return VT.changeVectorElementTypeToInteger();
1705 /// isMaskedValueZeroForTargetNode - Return true if 'Op & Mask' is known to
1706 /// be zero. Op is expected to be a target specific node. Used by DAG
1708 void SparcTargetLowering::computeMaskedBitsForTargetNode
1712 const SelectionDAG &DAG,
1713 unsigned Depth) const {
1714 APInt KnownZero2, KnownOne2;
1715 KnownZero = KnownOne = APInt(KnownZero.getBitWidth(), 0);
1717 switch (Op.getOpcode()) {
1719 case SPISD::SELECT_ICC:
1720 case SPISD::SELECT_XCC:
1721 case SPISD::SELECT_FCC:
1722 DAG.ComputeMaskedBits(Op.getOperand(1), KnownZero, KnownOne, Depth+1);
1723 DAG.ComputeMaskedBits(Op.getOperand(0), KnownZero2, KnownOne2, Depth+1);
1724 assert((KnownZero & KnownOne) == 0 && "Bits known to be one AND zero?");
1725 assert((KnownZero2 & KnownOne2) == 0 && "Bits known to be one AND zero?");
1727 // Only known if known in both the LHS and RHS.
1728 KnownOne &= KnownOne2;
1729 KnownZero &= KnownZero2;
1734 // Look at LHS/RHS/CC and see if they are a lowered setcc instruction. If so
1735 // set LHS/RHS and SPCC to the LHS/RHS of the setcc and SPCC to the condition.
1736 static void LookThroughSetCC(SDValue &LHS, SDValue &RHS,
1737 ISD::CondCode CC, unsigned &SPCC) {
1738 if (isa<ConstantSDNode>(RHS) &&
1739 cast<ConstantSDNode>(RHS)->isNullValue() &&
1741 (((LHS.getOpcode() == SPISD::SELECT_ICC ||
1742 LHS.getOpcode() == SPISD::SELECT_XCC) &&
1743 LHS.getOperand(3).getOpcode() == SPISD::CMPICC) ||
1744 (LHS.getOpcode() == SPISD::SELECT_FCC &&
1745 LHS.getOperand(3).getOpcode() == SPISD::CMPFCC)) &&
1746 isa<ConstantSDNode>(LHS.getOperand(0)) &&
1747 isa<ConstantSDNode>(LHS.getOperand(1)) &&
1748 cast<ConstantSDNode>(LHS.getOperand(0))->isOne() &&
1749 cast<ConstantSDNode>(LHS.getOperand(1))->isNullValue()) {
1750 SDValue CMPCC = LHS.getOperand(3);
1751 SPCC = cast<ConstantSDNode>(LHS.getOperand(2))->getZExtValue();
1752 LHS = CMPCC.getOperand(0);
1753 RHS = CMPCC.getOperand(1);
1757 // Convert to a target node and set target flags.
1758 SDValue SparcTargetLowering::withTargetFlags(SDValue Op, unsigned TF,
1759 SelectionDAG &DAG) const {
1760 if (const GlobalAddressSDNode *GA = dyn_cast<GlobalAddressSDNode>(Op))
1761 return DAG.getTargetGlobalAddress(GA->getGlobal(),
1763 GA->getValueType(0),
1764 GA->getOffset(), TF);
1766 if (const ConstantPoolSDNode *CP = dyn_cast<ConstantPoolSDNode>(Op))
1767 return DAG.getTargetConstantPool(CP->getConstVal(),
1768 CP->getValueType(0),
1770 CP->getOffset(), TF);
1772 if (const BlockAddressSDNode *BA = dyn_cast<BlockAddressSDNode>(Op))
1773 return DAG.getTargetBlockAddress(BA->getBlockAddress(),
1778 if (const ExternalSymbolSDNode *ES = dyn_cast<ExternalSymbolSDNode>(Op))
1779 return DAG.getTargetExternalSymbol(ES->getSymbol(),
1780 ES->getValueType(0), TF);
1782 llvm_unreachable("Unhandled address SDNode");
1785 // Split Op into high and low parts according to HiTF and LoTF.
1786 // Return an ADD node combining the parts.
1787 SDValue SparcTargetLowering::makeHiLoPair(SDValue Op,
1788 unsigned HiTF, unsigned LoTF,
1789 SelectionDAG &DAG) const {
1791 EVT VT = Op.getValueType();
1792 SDValue Hi = DAG.getNode(SPISD::Hi, DL, VT, withTargetFlags(Op, HiTF, DAG));
1793 SDValue Lo = DAG.getNode(SPISD::Lo, DL, VT, withTargetFlags(Op, LoTF, DAG));
1794 return DAG.getNode(ISD::ADD, DL, VT, Hi, Lo);
1797 // Build SDNodes for producing an address from a GlobalAddress, ConstantPool,
1798 // or ExternalSymbol SDNode.
1799 SDValue SparcTargetLowering::makeAddress(SDValue Op, SelectionDAG &DAG) const {
1801 EVT VT = getPointerTy();
1803 // Handle PIC mode first.
1804 if (getTargetMachine().getRelocationModel() == Reloc::PIC_) {
1805 // This is the pic32 code model, the GOT is known to be smaller than 4GB.
1806 SDValue HiLo = makeHiLoPair(Op, SparcMCExpr::VK_Sparc_GOT22,
1807 SparcMCExpr::VK_Sparc_GOT10, DAG);
1808 SDValue GlobalBase = DAG.getNode(SPISD::GLOBAL_BASE_REG, DL, VT);
1809 SDValue AbsAddr = DAG.getNode(ISD::ADD, DL, VT, GlobalBase, HiLo);
1810 // GLOBAL_BASE_REG codegen'ed with call. Inform MFI that this
1811 // function has calls.
1812 MachineFrameInfo *MFI = DAG.getMachineFunction().getFrameInfo();
1813 MFI->setHasCalls(true);
1814 return DAG.getLoad(VT, DL, DAG.getEntryNode(), AbsAddr,
1815 MachinePointerInfo::getGOT(), false, false, false, 0);
1818 // This is one of the absolute code models.
1819 switch(getTargetMachine().getCodeModel()) {
1821 llvm_unreachable("Unsupported absolute code model");
1822 case CodeModel::Small:
1824 return makeHiLoPair(Op, SparcMCExpr::VK_Sparc_HI,
1825 SparcMCExpr::VK_Sparc_LO, DAG);
1826 case CodeModel::Medium: {
1828 SDValue H44 = makeHiLoPair(Op, SparcMCExpr::VK_Sparc_H44,
1829 SparcMCExpr::VK_Sparc_M44, DAG);
1830 H44 = DAG.getNode(ISD::SHL, DL, VT, H44, DAG.getConstant(12, MVT::i32));
1831 SDValue L44 = withTargetFlags(Op, SparcMCExpr::VK_Sparc_L44, DAG);
1832 L44 = DAG.getNode(SPISD::Lo, DL, VT, L44);
1833 return DAG.getNode(ISD::ADD, DL, VT, H44, L44);
1835 case CodeModel::Large: {
1837 SDValue Hi = makeHiLoPair(Op, SparcMCExpr::VK_Sparc_HH,
1838 SparcMCExpr::VK_Sparc_HM, DAG);
1839 Hi = DAG.getNode(ISD::SHL, DL, VT, Hi, DAG.getConstant(32, MVT::i32));
1840 SDValue Lo = makeHiLoPair(Op, SparcMCExpr::VK_Sparc_HI,
1841 SparcMCExpr::VK_Sparc_LO, DAG);
1842 return DAG.getNode(ISD::ADD, DL, VT, Hi, Lo);
1847 SDValue SparcTargetLowering::LowerGlobalAddress(SDValue Op,
1848 SelectionDAG &DAG) const {
1849 return makeAddress(Op, DAG);
1852 SDValue SparcTargetLowering::LowerConstantPool(SDValue Op,
1853 SelectionDAG &DAG) const {
1854 return makeAddress(Op, DAG);
1857 SDValue SparcTargetLowering::LowerBlockAddress(SDValue Op,
1858 SelectionDAG &DAG) const {
1859 return makeAddress(Op, DAG);
1862 SDValue SparcTargetLowering::LowerGlobalTLSAddress(SDValue Op,
1863 SelectionDAG &DAG) const {
1865 GlobalAddressSDNode *GA = cast<GlobalAddressSDNode>(Op);
1867 const GlobalValue *GV = GA->getGlobal();
1868 EVT PtrVT = getPointerTy();
1870 TLSModel::Model model = getTargetMachine().getTLSModel(GV);
1872 if (model == TLSModel::GeneralDynamic || model == TLSModel::LocalDynamic) {
1873 unsigned HiTF = ((model == TLSModel::GeneralDynamic)
1874 ? SparcMCExpr::VK_Sparc_TLS_GD_HI22
1875 : SparcMCExpr::VK_Sparc_TLS_LDM_HI22);
1876 unsigned LoTF = ((model == TLSModel::GeneralDynamic)
1877 ? SparcMCExpr::VK_Sparc_TLS_GD_LO10
1878 : SparcMCExpr::VK_Sparc_TLS_LDM_LO10);
1879 unsigned addTF = ((model == TLSModel::GeneralDynamic)
1880 ? SparcMCExpr::VK_Sparc_TLS_GD_ADD
1881 : SparcMCExpr::VK_Sparc_TLS_LDM_ADD);
1882 unsigned callTF = ((model == TLSModel::GeneralDynamic)
1883 ? SparcMCExpr::VK_Sparc_TLS_GD_CALL
1884 : SparcMCExpr::VK_Sparc_TLS_LDM_CALL);
1886 SDValue HiLo = makeHiLoPair(Op, HiTF, LoTF, DAG);
1887 SDValue Base = DAG.getNode(SPISD::GLOBAL_BASE_REG, DL, PtrVT);
1888 SDValue Argument = DAG.getNode(SPISD::TLS_ADD, DL, PtrVT, Base, HiLo,
1889 withTargetFlags(Op, addTF, DAG));
1891 SDValue Chain = DAG.getEntryNode();
1894 Chain = DAG.getCALLSEQ_START(Chain, DAG.getIntPtrConstant(1, true), DL);
1895 Chain = DAG.getCopyToReg(Chain, DL, SP::O0, Argument, InFlag);
1896 InFlag = Chain.getValue(1);
1897 SDValue Callee = DAG.getTargetExternalSymbol("__tls_get_addr", PtrVT);
1898 SDValue Symbol = withTargetFlags(Op, callTF, DAG);
1900 SDVTList NodeTys = DAG.getVTList(MVT::Other, MVT::Glue);
1901 SmallVector<SDValue, 4> Ops;
1902 Ops.push_back(Chain);
1903 Ops.push_back(Callee);
1904 Ops.push_back(Symbol);
1905 Ops.push_back(DAG.getRegister(SP::O0, PtrVT));
1906 const uint32_t *Mask = getTargetMachine()
1907 .getRegisterInfo()->getCallPreservedMask(CallingConv::C);
1908 assert(Mask && "Missing call preserved mask for calling convention");
1909 Ops.push_back(DAG.getRegisterMask(Mask));
1910 Ops.push_back(InFlag);
1911 Chain = DAG.getNode(SPISD::TLS_CALL, DL, NodeTys, &Ops[0], Ops.size());
1912 InFlag = Chain.getValue(1);
1913 Chain = DAG.getCALLSEQ_END(Chain, DAG.getIntPtrConstant(1, true),
1914 DAG.getIntPtrConstant(0, true), InFlag, DL);
1915 InFlag = Chain.getValue(1);
1916 SDValue Ret = DAG.getCopyFromReg(Chain, DL, SP::O0, PtrVT, InFlag);
1918 if (model != TLSModel::LocalDynamic)
1921 SDValue Hi = DAG.getNode(SPISD::Hi, DL, PtrVT,
1922 withTargetFlags(Op, SparcMCExpr::VK_Sparc_TLS_LDO_HIX22, DAG));
1923 SDValue Lo = DAG.getNode(SPISD::Lo, DL, PtrVT,
1924 withTargetFlags(Op, SparcMCExpr::VK_Sparc_TLS_LDO_LOX10, DAG));
1925 HiLo = DAG.getNode(ISD::XOR, DL, PtrVT, Hi, Lo);
1926 return DAG.getNode(SPISD::TLS_ADD, DL, PtrVT, Ret, HiLo,
1927 withTargetFlags(Op, SparcMCExpr::VK_Sparc_TLS_LDO_ADD, DAG));
1930 if (model == TLSModel::InitialExec) {
1931 unsigned ldTF = ((PtrVT == MVT::i64)? SparcMCExpr::VK_Sparc_TLS_IE_LDX
1932 : SparcMCExpr::VK_Sparc_TLS_IE_LD);
1934 SDValue Base = DAG.getNode(SPISD::GLOBAL_BASE_REG, DL, PtrVT);
1936 // GLOBAL_BASE_REG codegen'ed with call. Inform MFI that this
1937 // function has calls.
1938 MachineFrameInfo *MFI = DAG.getMachineFunction().getFrameInfo();
1939 MFI->setHasCalls(true);
1941 SDValue TGA = makeHiLoPair(Op,
1942 SparcMCExpr::VK_Sparc_TLS_IE_HI22,
1943 SparcMCExpr::VK_Sparc_TLS_IE_LO10, DAG);
1944 SDValue Ptr = DAG.getNode(ISD::ADD, DL, PtrVT, Base, TGA);
1945 SDValue Offset = DAG.getNode(SPISD::TLS_LD,
1947 withTargetFlags(Op, ldTF, DAG));
1948 return DAG.getNode(SPISD::TLS_ADD, DL, PtrVT,
1949 DAG.getRegister(SP::G7, PtrVT), Offset,
1951 SparcMCExpr::VK_Sparc_TLS_IE_ADD, DAG));
1954 assert(model == TLSModel::LocalExec);
1955 SDValue Hi = DAG.getNode(SPISD::Hi, DL, PtrVT,
1956 withTargetFlags(Op, SparcMCExpr::VK_Sparc_TLS_LE_HIX22, DAG));
1957 SDValue Lo = DAG.getNode(SPISD::Lo, DL, PtrVT,
1958 withTargetFlags(Op, SparcMCExpr::VK_Sparc_TLS_LE_LOX10, DAG));
1959 SDValue Offset = DAG.getNode(ISD::XOR, DL, PtrVT, Hi, Lo);
1961 return DAG.getNode(ISD::ADD, DL, PtrVT,
1962 DAG.getRegister(SP::G7, PtrVT), Offset);
1966 SparcTargetLowering::LowerF128_LibCallArg(SDValue Chain, ArgListTy &Args,
1967 SDValue Arg, SDLoc DL,
1968 SelectionDAG &DAG) const {
1969 MachineFrameInfo *MFI = DAG.getMachineFunction().getFrameInfo();
1970 EVT ArgVT = Arg.getValueType();
1971 Type *ArgTy = ArgVT.getTypeForEVT(*DAG.getContext());
1977 if (ArgTy->isFP128Ty()) {
1978 // Create a stack object and pass the pointer to the library function.
1979 int FI = MFI->CreateStackObject(16, 8, false);
1980 SDValue FIPtr = DAG.getFrameIndex(FI, getPointerTy());
1981 Chain = DAG.getStore(Chain,
1985 MachinePointerInfo(),
1991 Entry.Ty = PointerType::getUnqual(ArgTy);
1993 Args.push_back(Entry);
1998 SparcTargetLowering::LowerF128Op(SDValue Op, SelectionDAG &DAG,
1999 const char *LibFuncName,
2000 unsigned numArgs) const {
2004 MachineFrameInfo *MFI = DAG.getMachineFunction().getFrameInfo();
2006 SDValue Callee = DAG.getExternalSymbol(LibFuncName, getPointerTy());
2007 Type *RetTy = Op.getValueType().getTypeForEVT(*DAG.getContext());
2008 Type *RetTyABI = RetTy;
2009 SDValue Chain = DAG.getEntryNode();
2012 if (RetTy->isFP128Ty()) {
2013 // Create a Stack Object to receive the return value of type f128.
2015 int RetFI = MFI->CreateStackObject(16, 8, false);
2016 RetPtr = DAG.getFrameIndex(RetFI, getPointerTy());
2017 Entry.Node = RetPtr;
2018 Entry.Ty = PointerType::getUnqual(RetTy);
2019 if (!Subtarget->is64Bit())
2020 Entry.isSRet = true;
2021 Entry.isReturned = false;
2022 Args.push_back(Entry);
2023 RetTyABI = Type::getVoidTy(*DAG.getContext());
2026 assert(Op->getNumOperands() >= numArgs && "Not enough operands!");
2027 for (unsigned i = 0, e = numArgs; i != e; ++i) {
2028 Chain = LowerF128_LibCallArg(Chain, Args, Op.getOperand(i), SDLoc(Op), DAG);
2031 CallLoweringInfo CLI(Chain,
2033 false, false, false, false,
2036 Callee, Args, DAG, SDLoc(Op));
2037 std::pair<SDValue, SDValue> CallInfo = LowerCallTo(CLI);
2039 // chain is in second result.
2040 if (RetTyABI == RetTy)
2041 return CallInfo.first;
2043 assert (RetTy->isFP128Ty() && "Unexpected return type!");
2045 Chain = CallInfo.second;
2047 // Load RetPtr to get the return value.
2048 return DAG.getLoad(Op.getValueType(),
2052 MachinePointerInfo(),
2053 false, false, false, 8);
2057 SparcTargetLowering::LowerF128Compare(SDValue LHS, SDValue RHS,
2060 SelectionDAG &DAG) const {
2062 const char *LibCall = 0;
2063 bool is64Bit = Subtarget->is64Bit();
2065 default: llvm_unreachable("Unhandled conditional code!");
2066 case SPCC::FCC_E : LibCall = is64Bit? "_Qp_feq" : "_Q_feq"; break;
2067 case SPCC::FCC_NE : LibCall = is64Bit? "_Qp_fne" : "_Q_fne"; break;
2068 case SPCC::FCC_L : LibCall = is64Bit? "_Qp_flt" : "_Q_flt"; break;
2069 case SPCC::FCC_G : LibCall = is64Bit? "_Qp_fgt" : "_Q_fgt"; break;
2070 case SPCC::FCC_LE : LibCall = is64Bit? "_Qp_fle" : "_Q_fle"; break;
2071 case SPCC::FCC_GE : LibCall = is64Bit? "_Qp_fge" : "_Q_fge"; break;
2079 case SPCC::FCC_UE : LibCall = is64Bit? "_Qp_cmp" : "_Q_cmp"; break;
2082 SDValue Callee = DAG.getExternalSymbol(LibCall, getPointerTy());
2083 Type *RetTy = Type::getInt32Ty(*DAG.getContext());
2085 SDValue Chain = DAG.getEntryNode();
2086 Chain = LowerF128_LibCallArg(Chain, Args, LHS, DL, DAG);
2087 Chain = LowerF128_LibCallArg(Chain, Args, RHS, DL, DAG);
2090 CallLoweringInfo CLI(Chain,
2092 false, false, false, false,
2095 Callee, Args, DAG, DL);
2097 std::pair<SDValue, SDValue> CallInfo = LowerCallTo(CLI);
2099 // result is in first, and chain is in second result.
2100 SDValue Result = CallInfo.first;
2104 SDValue RHS = DAG.getTargetConstant(0, Result.getValueType());
2105 SPCC = SPCC::ICC_NE;
2106 return DAG.getNode(SPISD::CMPICC, DL, MVT::Glue, Result, RHS);
2108 case SPCC::FCC_UL : {
2109 SDValue Mask = DAG.getTargetConstant(1, Result.getValueType());
2110 Result = DAG.getNode(ISD::AND, DL, Result.getValueType(), Result, Mask);
2111 SDValue RHS = DAG.getTargetConstant(0, Result.getValueType());
2112 SPCC = SPCC::ICC_NE;
2113 return DAG.getNode(SPISD::CMPICC, DL, MVT::Glue, Result, RHS);
2115 case SPCC::FCC_ULE: {
2116 SDValue RHS = DAG.getTargetConstant(2, Result.getValueType());
2117 SPCC = SPCC::ICC_NE;
2118 return DAG.getNode(SPISD::CMPICC, DL, MVT::Glue, Result, RHS);
2120 case SPCC::FCC_UG : {
2121 SDValue RHS = DAG.getTargetConstant(1, Result.getValueType());
2123 return DAG.getNode(SPISD::CMPICC, DL, MVT::Glue, Result, RHS);
2125 case SPCC::FCC_UGE: {
2126 SDValue RHS = DAG.getTargetConstant(1, Result.getValueType());
2127 SPCC = SPCC::ICC_NE;
2128 return DAG.getNode(SPISD::CMPICC, DL, MVT::Glue, Result, RHS);
2131 case SPCC::FCC_U : {
2132 SDValue RHS = DAG.getTargetConstant(3, Result.getValueType());
2134 return DAG.getNode(SPISD::CMPICC, DL, MVT::Glue, Result, RHS);
2136 case SPCC::FCC_O : {
2137 SDValue RHS = DAG.getTargetConstant(3, Result.getValueType());
2138 SPCC = SPCC::ICC_NE;
2139 return DAG.getNode(SPISD::CMPICC, DL, MVT::Glue, Result, RHS);
2141 case SPCC::FCC_LG : {
2142 SDValue Mask = DAG.getTargetConstant(3, Result.getValueType());
2143 Result = DAG.getNode(ISD::AND, DL, Result.getValueType(), Result, Mask);
2144 SDValue RHS = DAG.getTargetConstant(0, Result.getValueType());
2145 SPCC = SPCC::ICC_NE;
2146 return DAG.getNode(SPISD::CMPICC, DL, MVT::Glue, Result, RHS);
2148 case SPCC::FCC_UE : {
2149 SDValue Mask = DAG.getTargetConstant(3, Result.getValueType());
2150 Result = DAG.getNode(ISD::AND, DL, Result.getValueType(), Result, Mask);
2151 SDValue RHS = DAG.getTargetConstant(0, Result.getValueType());
2153 return DAG.getNode(SPISD::CMPICC, DL, MVT::Glue, Result, RHS);
2159 LowerF128_FPEXTEND(SDValue Op, SelectionDAG &DAG,
2160 const SparcTargetLowering &TLI) {
2162 if (Op.getOperand(0).getValueType() == MVT::f64)
2163 return TLI.LowerF128Op(Op, DAG,
2164 TLI.getLibcallName(RTLIB::FPEXT_F64_F128), 1);
2166 if (Op.getOperand(0).getValueType() == MVT::f32)
2167 return TLI.LowerF128Op(Op, DAG,
2168 TLI.getLibcallName(RTLIB::FPEXT_F32_F128), 1);
2170 llvm_unreachable("fpextend with non-float operand!");
2171 return SDValue(0, 0);
2175 LowerF128_FPROUND(SDValue Op, SelectionDAG &DAG,
2176 const SparcTargetLowering &TLI) {
2177 // FP_ROUND on f64 and f32 are legal.
2178 if (Op.getOperand(0).getValueType() != MVT::f128)
2181 if (Op.getValueType() == MVT::f64)
2182 return TLI.LowerF128Op(Op, DAG,
2183 TLI.getLibcallName(RTLIB::FPROUND_F128_F64), 1);
2184 if (Op.getValueType() == MVT::f32)
2185 return TLI.LowerF128Op(Op, DAG,
2186 TLI.getLibcallName(RTLIB::FPROUND_F128_F32), 1);
2188 llvm_unreachable("fpround to non-float!");
2189 return SDValue(0, 0);
2192 static SDValue LowerFP_TO_SINT(SDValue Op, SelectionDAG &DAG,
2193 const SparcTargetLowering &TLI,
2196 EVT VT = Op.getValueType();
2197 assert(VT == MVT::i32 || VT == MVT::i64);
2199 // Expand f128 operations to fp128 abi calls.
2200 if (Op.getOperand(0).getValueType() == MVT::f128
2201 && (!hasHardQuad || !TLI.isTypeLegal(VT))) {
2202 const char *libName = TLI.getLibcallName(VT == MVT::i32
2203 ? RTLIB::FPTOSINT_F128_I32
2204 : RTLIB::FPTOSINT_F128_I64);
2205 return TLI.LowerF128Op(Op, DAG, libName, 1);
2208 // Expand if the resulting type is illegal.
2209 if (!TLI.isTypeLegal(VT))
2210 return SDValue(0, 0);
2212 // Otherwise, Convert the fp value to integer in an FP register.
2214 Op = DAG.getNode(SPISD::FTOI, dl, MVT::f32, Op.getOperand(0));
2216 Op = DAG.getNode(SPISD::FTOX, dl, MVT::f64, Op.getOperand(0));
2218 return DAG.getNode(ISD::BITCAST, dl, VT, Op);
2221 static SDValue LowerSINT_TO_FP(SDValue Op, SelectionDAG &DAG,
2222 const SparcTargetLowering &TLI,
2225 EVT OpVT = Op.getOperand(0).getValueType();
2226 assert(OpVT == MVT::i32 || (OpVT == MVT::i64));
2228 EVT floatVT = (OpVT == MVT::i32) ? MVT::f32 : MVT::f64;
2230 // Expand f128 operations to fp128 ABI calls.
2231 if (Op.getValueType() == MVT::f128
2232 && (!hasHardQuad || !TLI.isTypeLegal(OpVT))) {
2233 const char *libName = TLI.getLibcallName(OpVT == MVT::i32
2234 ? RTLIB::SINTTOFP_I32_F128
2235 : RTLIB::SINTTOFP_I64_F128);
2236 return TLI.LowerF128Op(Op, DAG, libName, 1);
2239 // Expand if the operand type is illegal.
2240 if (!TLI.isTypeLegal(OpVT))
2241 return SDValue(0, 0);
2243 // Otherwise, Convert the int value to FP in an FP register.
2244 SDValue Tmp = DAG.getNode(ISD::BITCAST, dl, floatVT, Op.getOperand(0));
2245 unsigned opcode = (OpVT == MVT::i32)? SPISD::ITOF : SPISD::XTOF;
2246 return DAG.getNode(opcode, dl, Op.getValueType(), Tmp);
2249 static SDValue LowerFP_TO_UINT(SDValue Op, SelectionDAG &DAG,
2250 const SparcTargetLowering &TLI,
2253 EVT VT = Op.getValueType();
2255 // Expand if it does not involve f128 or the target has support for
2256 // quad floating point instructions and the resulting type is legal.
2257 if (Op.getOperand(0).getValueType() != MVT::f128 ||
2258 (hasHardQuad && TLI.isTypeLegal(VT)))
2259 return SDValue(0, 0);
2261 assert(VT == MVT::i32 || VT == MVT::i64);
2263 return TLI.LowerF128Op(Op, DAG,
2264 TLI.getLibcallName(VT == MVT::i32
2265 ? RTLIB::FPTOUINT_F128_I32
2266 : RTLIB::FPTOUINT_F128_I64),
2270 static SDValue LowerUINT_TO_FP(SDValue Op, SelectionDAG &DAG,
2271 const SparcTargetLowering &TLI,
2274 EVT OpVT = Op.getOperand(0).getValueType();
2275 assert(OpVT == MVT::i32 || OpVT == MVT::i64);
2277 // Expand if it does not involve f128 or the target has support for
2278 // quad floating point instructions and the operand type is legal.
2279 if (Op.getValueType() != MVT::f128 || (hasHardQuad && TLI.isTypeLegal(OpVT)))
2280 return SDValue(0, 0);
2282 return TLI.LowerF128Op(Op, DAG,
2283 TLI.getLibcallName(OpVT == MVT::i32
2284 ? RTLIB::UINTTOFP_I32_F128
2285 : RTLIB::UINTTOFP_I64_F128),
2289 static SDValue LowerBR_CC(SDValue Op, SelectionDAG &DAG,
2290 const SparcTargetLowering &TLI,
2292 SDValue Chain = Op.getOperand(0);
2293 ISD::CondCode CC = cast<CondCodeSDNode>(Op.getOperand(1))->get();
2294 SDValue LHS = Op.getOperand(2);
2295 SDValue RHS = Op.getOperand(3);
2296 SDValue Dest = Op.getOperand(4);
2298 unsigned Opc, SPCC = ~0U;
2300 // If this is a br_cc of a "setcc", and if the setcc got lowered into
2301 // an CMP[IF]CC/SELECT_[IF]CC pair, find the original compared values.
2302 LookThroughSetCC(LHS, RHS, CC, SPCC);
2304 // Get the condition flag.
2305 SDValue CompareFlag;
2306 if (LHS.getValueType().isInteger()) {
2307 CompareFlag = DAG.getNode(SPISD::CMPICC, dl, MVT::Glue, LHS, RHS);
2308 if (SPCC == ~0U) SPCC = IntCondCCodeToICC(CC);
2309 // 32-bit compares use the icc flags, 64-bit uses the xcc flags.
2310 Opc = LHS.getValueType() == MVT::i32 ? SPISD::BRICC : SPISD::BRXCC;
2312 if (!hasHardQuad && LHS.getValueType() == MVT::f128) {
2313 if (SPCC == ~0U) SPCC = FPCondCCodeToFCC(CC);
2314 CompareFlag = TLI.LowerF128Compare(LHS, RHS, SPCC, dl, DAG);
2317 CompareFlag = DAG.getNode(SPISD::CMPFCC, dl, MVT::Glue, LHS, RHS);
2318 if (SPCC == ~0U) SPCC = FPCondCCodeToFCC(CC);
2322 return DAG.getNode(Opc, dl, MVT::Other, Chain, Dest,
2323 DAG.getConstant(SPCC, MVT::i32), CompareFlag);
2326 static SDValue LowerSELECT_CC(SDValue Op, SelectionDAG &DAG,
2327 const SparcTargetLowering &TLI,
2329 SDValue LHS = Op.getOperand(0);
2330 SDValue RHS = Op.getOperand(1);
2331 ISD::CondCode CC = cast<CondCodeSDNode>(Op.getOperand(4))->get();
2332 SDValue TrueVal = Op.getOperand(2);
2333 SDValue FalseVal = Op.getOperand(3);
2335 unsigned Opc, SPCC = ~0U;
2337 // If this is a select_cc of a "setcc", and if the setcc got lowered into
2338 // an CMP[IF]CC/SELECT_[IF]CC pair, find the original compared values.
2339 LookThroughSetCC(LHS, RHS, CC, SPCC);
2341 SDValue CompareFlag;
2342 if (LHS.getValueType().isInteger()) {
2343 CompareFlag = DAG.getNode(SPISD::CMPICC, dl, MVT::Glue, LHS, RHS);
2344 Opc = LHS.getValueType() == MVT::i32 ?
2345 SPISD::SELECT_ICC : SPISD::SELECT_XCC;
2346 if (SPCC == ~0U) SPCC = IntCondCCodeToICC(CC);
2348 if (!hasHardQuad && LHS.getValueType() == MVT::f128) {
2349 if (SPCC == ~0U) SPCC = FPCondCCodeToFCC(CC);
2350 CompareFlag = TLI.LowerF128Compare(LHS, RHS, SPCC, dl, DAG);
2351 Opc = SPISD::SELECT_ICC;
2353 CompareFlag = DAG.getNode(SPISD::CMPFCC, dl, MVT::Glue, LHS, RHS);
2354 Opc = SPISD::SELECT_FCC;
2355 if (SPCC == ~0U) SPCC = FPCondCCodeToFCC(CC);
2358 return DAG.getNode(Opc, dl, TrueVal.getValueType(), TrueVal, FalseVal,
2359 DAG.getConstant(SPCC, MVT::i32), CompareFlag);
2362 static SDValue LowerVASTART(SDValue Op, SelectionDAG &DAG,
2363 const SparcTargetLowering &TLI) {
2364 MachineFunction &MF = DAG.getMachineFunction();
2365 SparcMachineFunctionInfo *FuncInfo = MF.getInfo<SparcMachineFunctionInfo>();
2367 // Need frame address to find the address of VarArgsFrameIndex.
2368 MF.getFrameInfo()->setFrameAddressIsTaken(true);
2370 // vastart just stores the address of the VarArgsFrameIndex slot into the
2371 // memory location argument.
2374 DAG.getNode(ISD::ADD, DL, TLI.getPointerTy(),
2375 DAG.getRegister(SP::I6, TLI.getPointerTy()),
2376 DAG.getIntPtrConstant(FuncInfo->getVarArgsFrameOffset()));
2377 const Value *SV = cast<SrcValueSDNode>(Op.getOperand(2))->getValue();
2378 return DAG.getStore(Op.getOperand(0), DL, Offset, Op.getOperand(1),
2379 MachinePointerInfo(SV), false, false, 0);
2382 static SDValue LowerVAARG(SDValue Op, SelectionDAG &DAG) {
2383 SDNode *Node = Op.getNode();
2384 EVT VT = Node->getValueType(0);
2385 SDValue InChain = Node->getOperand(0);
2386 SDValue VAListPtr = Node->getOperand(1);
2387 EVT PtrVT = VAListPtr.getValueType();
2388 const Value *SV = cast<SrcValueSDNode>(Node->getOperand(2))->getValue();
2390 SDValue VAList = DAG.getLoad(PtrVT, DL, InChain, VAListPtr,
2391 MachinePointerInfo(SV), false, false, false, 0);
2392 // Increment the pointer, VAList, to the next vaarg.
2393 SDValue NextPtr = DAG.getNode(ISD::ADD, DL, PtrVT, VAList,
2394 DAG.getIntPtrConstant(VT.getSizeInBits()/8));
2395 // Store the incremented VAList to the legalized pointer.
2396 InChain = DAG.getStore(VAList.getValue(1), DL, NextPtr,
2397 VAListPtr, MachinePointerInfo(SV), false, false, 0);
2398 // Load the actual argument out of the pointer VAList.
2399 // We can't count on greater alignment than the word size.
2400 return DAG.getLoad(VT, DL, InChain, VAList, MachinePointerInfo(),
2401 false, false, false,
2402 std::min(PtrVT.getSizeInBits(), VT.getSizeInBits())/8);
2405 static SDValue LowerDYNAMIC_STACKALLOC(SDValue Op, SelectionDAG &DAG,
2406 const SparcSubtarget *Subtarget) {
2407 SDValue Chain = Op.getOperand(0); // Legalize the chain.
2408 SDValue Size = Op.getOperand(1); // Legalize the size.
2409 EVT VT = Size->getValueType(0);
2412 unsigned SPReg = SP::O6;
2413 SDValue SP = DAG.getCopyFromReg(Chain, dl, SPReg, VT);
2414 SDValue NewSP = DAG.getNode(ISD::SUB, dl, VT, SP, Size); // Value
2415 Chain = DAG.getCopyToReg(SP.getValue(1), dl, SPReg, NewSP); // Output chain
2417 // The resultant pointer is actually 16 words from the bottom of the stack,
2418 // to provide a register spill area.
2419 unsigned regSpillArea = Subtarget->is64Bit() ? 128 : 96;
2420 regSpillArea += Subtarget->getStackPointerBias();
2422 SDValue NewVal = DAG.getNode(ISD::ADD, dl, VT, NewSP,
2423 DAG.getConstant(regSpillArea, VT));
2424 SDValue Ops[2] = { NewVal, Chain };
2425 return DAG.getMergeValues(Ops, 2, dl);
2429 static SDValue getFLUSHW(SDValue Op, SelectionDAG &DAG) {
2431 SDValue Chain = DAG.getNode(SPISD::FLUSHW,
2432 dl, MVT::Other, DAG.getEntryNode());
2436 static SDValue getFRAMEADDR(uint64_t depth, SDValue Op, SelectionDAG &DAG,
2437 const SparcSubtarget *Subtarget) {
2438 MachineFrameInfo *MFI = DAG.getMachineFunction().getFrameInfo();
2439 MFI->setFrameAddressIsTaken(true);
2441 EVT VT = Op.getValueType();
2443 unsigned FrameReg = SP::I6;
2444 unsigned stackBias = Subtarget->getStackPointerBias();
2449 FrameAddr = DAG.getCopyFromReg(DAG.getEntryNode(), dl, FrameReg, VT);
2450 if (Subtarget->is64Bit())
2451 FrameAddr = DAG.getNode(ISD::ADD, dl, VT, FrameAddr,
2452 DAG.getIntPtrConstant(stackBias));
2456 // flush first to make sure the windowed registers' values are in stack
2457 SDValue Chain = getFLUSHW(Op, DAG);
2458 FrameAddr = DAG.getCopyFromReg(Chain, dl, FrameReg, VT);
2460 unsigned Offset = (Subtarget->is64Bit()) ? (stackBias + 112) : 56;
2463 SDValue Ptr = DAG.getNode(ISD::ADD, dl, VT, FrameAddr,
2464 DAG.getIntPtrConstant(Offset));
2465 FrameAddr = DAG.getLoad(VT, dl, Chain, Ptr, MachinePointerInfo(),
2466 false, false, false, 0);
2468 if (Subtarget->is64Bit())
2469 FrameAddr = DAG.getNode(ISD::ADD, dl, VT, FrameAddr,
2470 DAG.getIntPtrConstant(stackBias));
2475 static SDValue LowerFRAMEADDR(SDValue Op, SelectionDAG &DAG,
2476 const SparcSubtarget *Subtarget) {
2478 uint64_t depth = Op.getConstantOperandVal(0);
2480 return getFRAMEADDR(depth, Op, DAG, Subtarget);
2484 static SDValue LowerRETURNADDR(SDValue Op, SelectionDAG &DAG,
2485 const SparcTargetLowering &TLI,
2486 const SparcSubtarget *Subtarget) {
2487 MachineFunction &MF = DAG.getMachineFunction();
2488 MachineFrameInfo *MFI = MF.getFrameInfo();
2489 MFI->setReturnAddressIsTaken(true);
2491 if (TLI.verifyReturnAddressArgumentIsConstant(Op, DAG))
2494 EVT VT = Op.getValueType();
2496 uint64_t depth = Op.getConstantOperandVal(0);
2500 unsigned RetReg = MF.addLiveIn(SP::I7,
2501 TLI.getRegClassFor(TLI.getPointerTy()));
2502 RetAddr = DAG.getCopyFromReg(DAG.getEntryNode(), dl, RetReg, VT);
2506 // Need frame address to find return address of the caller.
2507 SDValue FrameAddr = getFRAMEADDR(depth - 1, Op, DAG, Subtarget);
2509 unsigned Offset = (Subtarget->is64Bit()) ? 120 : 60;
2510 SDValue Ptr = DAG.getNode(ISD::ADD,
2513 DAG.getIntPtrConstant(Offset));
2514 RetAddr = DAG.getLoad(VT, dl, DAG.getEntryNode(), Ptr,
2515 MachinePointerInfo(), false, false, false, 0);
2520 static SDValue LowerF64Op(SDValue Op, SelectionDAG &DAG, unsigned opcode)
2524 assert(Op.getValueType() == MVT::f64 && "LowerF64Op called on non-double!");
2525 assert(opcode == ISD::FNEG || opcode == ISD::FABS);
2527 // Lower fneg/fabs on f64 to fneg/fabs on f32.
2528 // fneg f64 => fneg f32:sub_even, fmov f32:sub_odd.
2529 // fabs f64 => fabs f32:sub_even, fmov f32:sub_odd.
2531 SDValue SrcReg64 = Op.getOperand(0);
2532 SDValue Hi32 = DAG.getTargetExtractSubreg(SP::sub_even, dl, MVT::f32,
2534 SDValue Lo32 = DAG.getTargetExtractSubreg(SP::sub_odd, dl, MVT::f32,
2537 Hi32 = DAG.getNode(opcode, dl, MVT::f32, Hi32);
2539 SDValue DstReg64 = SDValue(DAG.getMachineNode(TargetOpcode::IMPLICIT_DEF,
2541 DstReg64 = DAG.getTargetInsertSubreg(SP::sub_even, dl, MVT::f64,
2543 DstReg64 = DAG.getTargetInsertSubreg(SP::sub_odd, dl, MVT::f64,
2548 // Lower a f128 load into two f64 loads.
2549 static SDValue LowerF128Load(SDValue Op, SelectionDAG &DAG)
2552 LoadSDNode *LdNode = dyn_cast<LoadSDNode>(Op.getNode());
2553 assert(LdNode && LdNode->getOffset().getOpcode() == ISD::UNDEF
2554 && "Unexpected node type");
2556 unsigned alignment = LdNode->getAlignment();
2560 SDValue Hi64 = DAG.getLoad(MVT::f64,
2563 LdNode->getBasePtr(),
2564 LdNode->getPointerInfo(),
2565 false, false, false, alignment);
2566 EVT addrVT = LdNode->getBasePtr().getValueType();
2567 SDValue LoPtr = DAG.getNode(ISD::ADD, dl, addrVT,
2568 LdNode->getBasePtr(),
2569 DAG.getConstant(8, addrVT));
2570 SDValue Lo64 = DAG.getLoad(MVT::f64,
2574 LdNode->getPointerInfo(),
2575 false, false, false, alignment);
2577 SDValue SubRegEven = DAG.getTargetConstant(SP::sub_even64, MVT::i32);
2578 SDValue SubRegOdd = DAG.getTargetConstant(SP::sub_odd64, MVT::i32);
2580 SDNode *InFP128 = DAG.getMachineNode(TargetOpcode::IMPLICIT_DEF,
2582 InFP128 = DAG.getMachineNode(TargetOpcode::INSERT_SUBREG, dl,
2584 SDValue(InFP128, 0),
2587 InFP128 = DAG.getMachineNode(TargetOpcode::INSERT_SUBREG, dl,
2589 SDValue(InFP128, 0),
2592 SDValue OutChains[2] = { SDValue(Hi64.getNode(), 1),
2593 SDValue(Lo64.getNode(), 1) };
2594 SDValue OutChain = DAG.getNode(ISD::TokenFactor, dl, MVT::Other,
2596 SDValue Ops[2] = {SDValue(InFP128,0), OutChain};
2597 return DAG.getMergeValues(Ops, 2, dl);
2600 // Lower a f128 store into two f64 stores.
2601 static SDValue LowerF128Store(SDValue Op, SelectionDAG &DAG) {
2603 StoreSDNode *StNode = dyn_cast<StoreSDNode>(Op.getNode());
2604 assert(StNode && StNode->getOffset().getOpcode() == ISD::UNDEF
2605 && "Unexpected node type");
2606 SDValue SubRegEven = DAG.getTargetConstant(SP::sub_even64, MVT::i32);
2607 SDValue SubRegOdd = DAG.getTargetConstant(SP::sub_odd64, MVT::i32);
2609 SDNode *Hi64 = DAG.getMachineNode(TargetOpcode::EXTRACT_SUBREG,
2614 SDNode *Lo64 = DAG.getMachineNode(TargetOpcode::EXTRACT_SUBREG,
2620 unsigned alignment = StNode->getAlignment();
2624 SDValue OutChains[2];
2625 OutChains[0] = DAG.getStore(StNode->getChain(),
2628 StNode->getBasePtr(),
2629 MachinePointerInfo(),
2630 false, false, alignment);
2631 EVT addrVT = StNode->getBasePtr().getValueType();
2632 SDValue LoPtr = DAG.getNode(ISD::ADD, dl, addrVT,
2633 StNode->getBasePtr(),
2634 DAG.getConstant(8, addrVT));
2635 OutChains[1] = DAG.getStore(StNode->getChain(),
2639 MachinePointerInfo(),
2640 false, false, alignment);
2641 return DAG.getNode(ISD::TokenFactor, dl, MVT::Other,
2645 static SDValue LowerFNEG(SDValue Op, SelectionDAG &DAG,
2646 const SparcTargetLowering &TLI,
2648 if (Op.getValueType() == MVT::f64)
2649 return LowerF64Op(Op, DAG, ISD::FNEG);
2650 if (Op.getValueType() == MVT::f128)
2651 return TLI.LowerF128Op(Op, DAG, ((is64Bit) ? "_Qp_neg" : "_Q_neg"), 1);
2655 static SDValue LowerFABS(SDValue Op, SelectionDAG &DAG, bool isV9) {
2656 if (Op.getValueType() == MVT::f64)
2657 return LowerF64Op(Op, DAG, ISD::FABS);
2658 if (Op.getValueType() != MVT::f128)
2661 // Lower fabs on f128 to fabs on f64
2662 // fabs f128 => fabs f64:sub_even64, fmov f64:sub_odd64
2665 SDValue SrcReg128 = Op.getOperand(0);
2666 SDValue Hi64 = DAG.getTargetExtractSubreg(SP::sub_even64, dl, MVT::f64,
2668 SDValue Lo64 = DAG.getTargetExtractSubreg(SP::sub_odd64, dl, MVT::f64,
2671 Hi64 = DAG.getNode(Op.getOpcode(), dl, MVT::f64, Hi64);
2673 Hi64 = LowerF64Op(Hi64, DAG, ISD::FABS);
2675 SDValue DstReg128 = SDValue(DAG.getMachineNode(TargetOpcode::IMPLICIT_DEF,
2677 DstReg128 = DAG.getTargetInsertSubreg(SP::sub_even64, dl, MVT::f128,
2679 DstReg128 = DAG.getTargetInsertSubreg(SP::sub_odd64, dl, MVT::f128,
2684 static SDValue LowerADDC_ADDE_SUBC_SUBE(SDValue Op, SelectionDAG &DAG) {
2686 if (Op.getValueType() != MVT::i64)
2690 SDValue Src1 = Op.getOperand(0);
2691 SDValue Src1Lo = DAG.getNode(ISD::TRUNCATE, dl, MVT::i32, Src1);
2692 SDValue Src1Hi = DAG.getNode(ISD::SRL, dl, MVT::i64, Src1,
2693 DAG.getConstant(32, MVT::i64));
2694 Src1Hi = DAG.getNode(ISD::TRUNCATE, dl, MVT::i32, Src1Hi);
2696 SDValue Src2 = Op.getOperand(1);
2697 SDValue Src2Lo = DAG.getNode(ISD::TRUNCATE, dl, MVT::i32, Src2);
2698 SDValue Src2Hi = DAG.getNode(ISD::SRL, dl, MVT::i64, Src2,
2699 DAG.getConstant(32, MVT::i64));
2700 Src2Hi = DAG.getNode(ISD::TRUNCATE, dl, MVT::i32, Src2Hi);
2703 bool hasChain = false;
2704 unsigned hiOpc = Op.getOpcode();
2705 switch (Op.getOpcode()) {
2706 default: llvm_unreachable("Invalid opcode");
2707 case ISD::ADDC: hiOpc = ISD::ADDE; break;
2708 case ISD::ADDE: hasChain = true; break;
2709 case ISD::SUBC: hiOpc = ISD::SUBE; break;
2710 case ISD::SUBE: hasChain = true; break;
2713 SDVTList VTs = DAG.getVTList(MVT::i32, MVT::Glue);
2715 Lo = DAG.getNode(Op.getOpcode(), dl, VTs, Src1Lo, Src2Lo,
2718 Lo = DAG.getNode(Op.getOpcode(), dl, VTs, Src1Lo, Src2Lo);
2720 SDValue Hi = DAG.getNode(hiOpc, dl, VTs, Src1Hi, Src2Hi, Lo.getValue(1));
2721 SDValue Carry = Hi.getValue(1);
2723 Lo = DAG.getNode(ISD::ZERO_EXTEND, dl, MVT::i64, Lo);
2724 Hi = DAG.getNode(ISD::ZERO_EXTEND, dl, MVT::i64, Hi);
2725 Hi = DAG.getNode(ISD::SHL, dl, MVT::i64, Hi,
2726 DAG.getConstant(32, MVT::i64));
2728 SDValue Dst = DAG.getNode(ISD::OR, dl, MVT::i64, Hi, Lo);
2729 SDValue Ops[2] = { Dst, Carry };
2730 return DAG.getMergeValues(Ops, 2, dl);
2733 // Custom lower UMULO/SMULO for SPARC. This code is similar to ExpandNode()
2734 // in LegalizeDAG.cpp except the order of arguments to the library function.
2735 static SDValue LowerUMULO_SMULO(SDValue Op, SelectionDAG &DAG,
2736 const SparcTargetLowering &TLI)
2738 unsigned opcode = Op.getOpcode();
2739 assert((opcode == ISD::UMULO || opcode == ISD::SMULO) && "Invalid Opcode.");
2741 bool isSigned = (opcode == ISD::SMULO);
2743 EVT WideVT = MVT::i128;
2745 SDValue LHS = Op.getOperand(0);
2747 if (LHS.getValueType() != VT)
2750 SDValue ShiftAmt = DAG.getConstant(63, VT);
2752 SDValue RHS = Op.getOperand(1);
2753 SDValue HiLHS = DAG.getNode(ISD::SRA, dl, VT, LHS, ShiftAmt);
2754 SDValue HiRHS = DAG.getNode(ISD::SRA, dl, MVT::i64, RHS, ShiftAmt);
2755 SDValue Args[] = { HiLHS, LHS, HiRHS, RHS };
2757 SDValue MulResult = TLI.makeLibCall(DAG,
2758 RTLIB::MUL_I128, WideVT,
2759 Args, 4, isSigned, dl).first;
2760 SDValue BottomHalf = DAG.getNode(ISD::EXTRACT_ELEMENT, dl, VT,
2761 MulResult, DAG.getIntPtrConstant(0));
2762 SDValue TopHalf = DAG.getNode(ISD::EXTRACT_ELEMENT, dl, VT,
2763 MulResult, DAG.getIntPtrConstant(1));
2765 SDValue Tmp1 = DAG.getNode(ISD::SRA, dl, VT, BottomHalf, ShiftAmt);
2766 TopHalf = DAG.getSetCC(dl, MVT::i32, TopHalf, Tmp1, ISD::SETNE);
2768 TopHalf = DAG.getSetCC(dl, MVT::i32, TopHalf, DAG.getConstant(0, VT),
2771 // MulResult is a node with an illegal type. Because such things are not
2772 // generally permitted during this phase of legalization, delete the
2773 // node. The above EXTRACT_ELEMENT nodes should have been folded.
2774 DAG.DeleteNode(MulResult.getNode());
2776 SDValue Ops[2] = { BottomHalf, TopHalf } ;
2777 return DAG.getMergeValues(Ops, 2, dl);
2780 static SDValue LowerATOMIC_LOAD_STORE(SDValue Op, SelectionDAG &DAG) {
2781 // Monotonic load/stores are legal.
2782 if (cast<AtomicSDNode>(Op)->getOrdering() <= Monotonic)
2785 // Otherwise, expand with a fence.
2790 SDValue SparcTargetLowering::
2791 LowerOperation(SDValue Op, SelectionDAG &DAG) const {
2793 bool hasHardQuad = Subtarget->hasHardQuad();
2794 bool is64Bit = Subtarget->is64Bit();
2795 bool isV9 = Subtarget->isV9();
2797 switch (Op.getOpcode()) {
2798 default: llvm_unreachable("Should not custom lower this!");
2800 case ISD::RETURNADDR: return LowerRETURNADDR(Op, DAG, *this,
2802 case ISD::FRAMEADDR: return LowerFRAMEADDR(Op, DAG,
2804 case ISD::GlobalTLSAddress: return LowerGlobalTLSAddress(Op, DAG);
2805 case ISD::GlobalAddress: return LowerGlobalAddress(Op, DAG);
2806 case ISD::BlockAddress: return LowerBlockAddress(Op, DAG);
2807 case ISD::ConstantPool: return LowerConstantPool(Op, DAG);
2808 case ISD::FP_TO_SINT: return LowerFP_TO_SINT(Op, DAG, *this,
2810 case ISD::SINT_TO_FP: return LowerSINT_TO_FP(Op, DAG, *this,
2812 case ISD::FP_TO_UINT: return LowerFP_TO_UINT(Op, DAG, *this,
2814 case ISD::UINT_TO_FP: return LowerUINT_TO_FP(Op, DAG, *this,
2816 case ISD::BR_CC: return LowerBR_CC(Op, DAG, *this,
2818 case ISD::SELECT_CC: return LowerSELECT_CC(Op, DAG, *this,
2820 case ISD::VASTART: return LowerVASTART(Op, DAG, *this);
2821 case ISD::VAARG: return LowerVAARG(Op, DAG);
2822 case ISD::DYNAMIC_STACKALLOC: return LowerDYNAMIC_STACKALLOC(Op, DAG,
2825 case ISD::LOAD: return LowerF128Load(Op, DAG);
2826 case ISD::STORE: return LowerF128Store(Op, DAG);
2827 case ISD::FADD: return LowerF128Op(Op, DAG,
2828 getLibcallName(RTLIB::ADD_F128), 2);
2829 case ISD::FSUB: return LowerF128Op(Op, DAG,
2830 getLibcallName(RTLIB::SUB_F128), 2);
2831 case ISD::FMUL: return LowerF128Op(Op, DAG,
2832 getLibcallName(RTLIB::MUL_F128), 2);
2833 case ISD::FDIV: return LowerF128Op(Op, DAG,
2834 getLibcallName(RTLIB::DIV_F128), 2);
2835 case ISD::FSQRT: return LowerF128Op(Op, DAG,
2836 getLibcallName(RTLIB::SQRT_F128),1);
2837 case ISD::FNEG: return LowerFNEG(Op, DAG, *this, is64Bit);
2838 case ISD::FABS: return LowerFABS(Op, DAG, isV9);
2839 case ISD::FP_EXTEND: return LowerF128_FPEXTEND(Op, DAG, *this);
2840 case ISD::FP_ROUND: return LowerF128_FPROUND(Op, DAG, *this);
2844 case ISD::SUBE: return LowerADDC_ADDE_SUBC_SUBE(Op, DAG);
2846 case ISD::SMULO: return LowerUMULO_SMULO(Op, DAG, *this);
2847 case ISD::ATOMIC_LOAD:
2848 case ISD::ATOMIC_STORE: return LowerATOMIC_LOAD_STORE(Op, DAG);
2853 SparcTargetLowering::EmitInstrWithCustomInserter(MachineInstr *MI,
2854 MachineBasicBlock *BB) const {
2855 switch (MI->getOpcode()) {
2856 default: llvm_unreachable("Unknown SELECT_CC!");
2857 case SP::SELECT_CC_Int_ICC:
2858 case SP::SELECT_CC_FP_ICC:
2859 case SP::SELECT_CC_DFP_ICC:
2860 case SP::SELECT_CC_QFP_ICC:
2861 return expandSelectCC(MI, BB, SP::BCOND);
2862 case SP::SELECT_CC_Int_FCC:
2863 case SP::SELECT_CC_FP_FCC:
2864 case SP::SELECT_CC_DFP_FCC:
2865 case SP::SELECT_CC_QFP_FCC:
2866 return expandSelectCC(MI, BB, SP::FBCOND);
2868 case SP::ATOMIC_LOAD_ADD_32:
2869 return expandAtomicRMW(MI, BB, SP::ADDrr);
2870 case SP::ATOMIC_LOAD_ADD_64:
2871 return expandAtomicRMW(MI, BB, SP::ADDXrr);
2872 case SP::ATOMIC_LOAD_SUB_32:
2873 return expandAtomicRMW(MI, BB, SP::SUBrr);
2874 case SP::ATOMIC_LOAD_SUB_64:
2875 return expandAtomicRMW(MI, BB, SP::SUBXrr);
2876 case SP::ATOMIC_LOAD_AND_32:
2877 return expandAtomicRMW(MI, BB, SP::ANDrr);
2878 case SP::ATOMIC_LOAD_AND_64:
2879 return expandAtomicRMW(MI, BB, SP::ANDXrr);
2880 case SP::ATOMIC_LOAD_OR_32:
2881 return expandAtomicRMW(MI, BB, SP::ORrr);
2882 case SP::ATOMIC_LOAD_OR_64:
2883 return expandAtomicRMW(MI, BB, SP::ORXrr);
2884 case SP::ATOMIC_LOAD_XOR_32:
2885 return expandAtomicRMW(MI, BB, SP::XORrr);
2886 case SP::ATOMIC_LOAD_XOR_64:
2887 return expandAtomicRMW(MI, BB, SP::XORXrr);
2888 case SP::ATOMIC_LOAD_NAND_32:
2889 return expandAtomicRMW(MI, BB, SP::ANDrr);
2890 case SP::ATOMIC_LOAD_NAND_64:
2891 return expandAtomicRMW(MI, BB, SP::ANDXrr);
2893 case SP::ATOMIC_SWAP_64:
2894 return expandAtomicRMW(MI, BB, 0);
2896 case SP::ATOMIC_LOAD_MAX_32:
2897 return expandAtomicRMW(MI, BB, SP::MOVICCrr, SPCC::ICC_G);
2898 case SP::ATOMIC_LOAD_MAX_64:
2899 return expandAtomicRMW(MI, BB, SP::MOVXCCrr, SPCC::ICC_G);
2900 case SP::ATOMIC_LOAD_MIN_32:
2901 return expandAtomicRMW(MI, BB, SP::MOVICCrr, SPCC::ICC_LE);
2902 case SP::ATOMIC_LOAD_MIN_64:
2903 return expandAtomicRMW(MI, BB, SP::MOVXCCrr, SPCC::ICC_LE);
2904 case SP::ATOMIC_LOAD_UMAX_32:
2905 return expandAtomicRMW(MI, BB, SP::MOVICCrr, SPCC::ICC_GU);
2906 case SP::ATOMIC_LOAD_UMAX_64:
2907 return expandAtomicRMW(MI, BB, SP::MOVXCCrr, SPCC::ICC_GU);
2908 case SP::ATOMIC_LOAD_UMIN_32:
2909 return expandAtomicRMW(MI, BB, SP::MOVICCrr, SPCC::ICC_LEU);
2910 case SP::ATOMIC_LOAD_UMIN_64:
2911 return expandAtomicRMW(MI, BB, SP::MOVXCCrr, SPCC::ICC_LEU);
2916 SparcTargetLowering::expandSelectCC(MachineInstr *MI,
2917 MachineBasicBlock *BB,
2918 unsigned BROpcode) const {
2919 const TargetInstrInfo &TII = *getTargetMachine().getInstrInfo();
2920 DebugLoc dl = MI->getDebugLoc();
2921 unsigned CC = (SPCC::CondCodes)MI->getOperand(3).getImm();
2923 // To "insert" a SELECT_CC instruction, we actually have to insert the diamond
2924 // control-flow pattern. The incoming instruction knows the destination vreg
2925 // to set, the condition code register to branch on, the true/false values to
2926 // select between, and a branch opcode to use.
2927 const BasicBlock *LLVM_BB = BB->getBasicBlock();
2928 MachineFunction::iterator It = BB;
2935 // fallthrough --> copy0MBB
2936 MachineBasicBlock *thisMBB = BB;
2937 MachineFunction *F = BB->getParent();
2938 MachineBasicBlock *copy0MBB = F->CreateMachineBasicBlock(LLVM_BB);
2939 MachineBasicBlock *sinkMBB = F->CreateMachineBasicBlock(LLVM_BB);
2940 F->insert(It, copy0MBB);
2941 F->insert(It, sinkMBB);
2943 // Transfer the remainder of BB and its successor edges to sinkMBB.
2944 sinkMBB->splice(sinkMBB->begin(), BB,
2945 llvm::next(MachineBasicBlock::iterator(MI)),
2947 sinkMBB->transferSuccessorsAndUpdatePHIs(BB);
2949 // Add the true and fallthrough blocks as its successors.
2950 BB->addSuccessor(copy0MBB);
2951 BB->addSuccessor(sinkMBB);
2953 BuildMI(BB, dl, TII.get(BROpcode)).addMBB(sinkMBB).addImm(CC);
2956 // %FalseValue = ...
2957 // # fallthrough to sinkMBB
2960 // Update machine-CFG edges
2961 BB->addSuccessor(sinkMBB);
2964 // %Result = phi [ %FalseValue, copy0MBB ], [ %TrueValue, thisMBB ]
2967 BuildMI(*BB, BB->begin(), dl, TII.get(SP::PHI), MI->getOperand(0).getReg())
2968 .addReg(MI->getOperand(2).getReg()).addMBB(copy0MBB)
2969 .addReg(MI->getOperand(1).getReg()).addMBB(thisMBB);
2971 MI->eraseFromParent(); // The pseudo instruction is gone now.
2976 SparcTargetLowering::expandAtomicRMW(MachineInstr *MI,
2977 MachineBasicBlock *MBB,
2979 unsigned CondCode) const {
2980 const TargetInstrInfo &TII = *getTargetMachine().getInstrInfo();
2981 MachineRegisterInfo &MRI = MBB->getParent()->getRegInfo();
2982 DebugLoc DL = MI->getDebugLoc();
2984 // MI is an atomic read-modify-write instruction of the form:
2986 // rd = atomicrmw<op> addr, rs2
2988 // All three operands are registers.
2989 unsigned DestReg = MI->getOperand(0).getReg();
2990 unsigned AddrReg = MI->getOperand(1).getReg();
2991 unsigned Rs2Reg = MI->getOperand(2).getReg();
2993 // SelectionDAG has already inserted memory barriers before and after MI, so
2994 // we simply have to implement the operatiuon in terms of compare-and-swap.
2996 // %val0 = load %addr
2998 // %val = phi %val0, %dest
2999 // %upd = op %val, %rs2
3000 // %dest = cas %addr, %val, %upd
3005 bool is64Bit = SP::I64RegsRegClass.hasSubClassEq(MRI.getRegClass(DestReg));
3006 const TargetRegisterClass *ValueRC =
3007 is64Bit ? &SP::I64RegsRegClass : &SP::IntRegsRegClass;
3008 unsigned Val0Reg = MRI.createVirtualRegister(ValueRC);
3010 BuildMI(*MBB, MI, DL, TII.get(is64Bit ? SP::LDXri : SP::LDri), Val0Reg)
3011 .addReg(AddrReg).addImm(0);
3013 // Split the basic block MBB before MI and insert the loop block in the hole.
3014 MachineFunction::iterator MFI = MBB;
3015 const BasicBlock *LLVM_BB = MBB->getBasicBlock();
3016 MachineFunction *MF = MBB->getParent();
3017 MachineBasicBlock *LoopMBB = MF->CreateMachineBasicBlock(LLVM_BB);
3018 MachineBasicBlock *DoneMBB = MF->CreateMachineBasicBlock(LLVM_BB);
3020 MF->insert(MFI, LoopMBB);
3021 MF->insert(MFI, DoneMBB);
3023 // Move MI and following instructions to DoneMBB.
3024 DoneMBB->splice(DoneMBB->begin(), MBB, MI, MBB->end());
3025 DoneMBB->transferSuccessorsAndUpdatePHIs(MBB);
3027 // Connect the CFG again.
3028 MBB->addSuccessor(LoopMBB);
3029 LoopMBB->addSuccessor(LoopMBB);
3030 LoopMBB->addSuccessor(DoneMBB);
3032 // Build the loop block.
3033 unsigned ValReg = MRI.createVirtualRegister(ValueRC);
3034 // Opcode == 0 means try to write Rs2Reg directly (ATOMIC_SWAP).
3035 unsigned UpdReg = (Opcode ? MRI.createVirtualRegister(ValueRC) : Rs2Reg);
3037 BuildMI(LoopMBB, DL, TII.get(SP::PHI), ValReg)
3038 .addReg(Val0Reg).addMBB(MBB)
3039 .addReg(DestReg).addMBB(LoopMBB);
3042 // This is one of the min/max operations. We need a CMPrr followed by a
3044 BuildMI(LoopMBB, DL, TII.get(SP::CMPrr)).addReg(ValReg).addReg(Rs2Reg);
3045 BuildMI(LoopMBB, DL, TII.get(Opcode), UpdReg)
3046 .addReg(ValReg).addReg(Rs2Reg).addImm(CondCode);
3047 } else if (Opcode) {
3048 BuildMI(LoopMBB, DL, TII.get(Opcode), UpdReg)
3049 .addReg(ValReg).addReg(Rs2Reg);
3052 if (MI->getOpcode() == SP::ATOMIC_LOAD_NAND_32 ||
3053 MI->getOpcode() == SP::ATOMIC_LOAD_NAND_64) {
3054 unsigned TmpReg = UpdReg;
3055 UpdReg = MRI.createVirtualRegister(ValueRC);
3056 BuildMI(LoopMBB, DL, TII.get(SP::XORri), UpdReg).addReg(TmpReg).addImm(-1);
3059 BuildMI(LoopMBB, DL, TII.get(is64Bit ? SP::CASXrr : SP::CASrr), DestReg)
3060 .addReg(AddrReg).addReg(ValReg).addReg(UpdReg)
3061 .setMemRefs(MI->memoperands_begin(), MI->memoperands_end());
3062 BuildMI(LoopMBB, DL, TII.get(SP::CMPrr)).addReg(ValReg).addReg(DestReg);
3063 BuildMI(LoopMBB, DL, TII.get(is64Bit ? SP::BPXCC : SP::BCOND))
3064 .addMBB(LoopMBB).addImm(SPCC::ICC_NE);
3066 MI->eraseFromParent();
3070 //===----------------------------------------------------------------------===//
3071 // Sparc Inline Assembly Support
3072 //===----------------------------------------------------------------------===//
3074 /// getConstraintType - Given a constraint letter, return the type of
3075 /// constraint it is for this target.
3076 SparcTargetLowering::ConstraintType
3077 SparcTargetLowering::getConstraintType(const std::string &Constraint) const {
3078 if (Constraint.size() == 1) {
3079 switch (Constraint[0]) {
3081 case 'r': return C_RegisterClass;
3087 return TargetLowering::getConstraintType(Constraint);
3090 TargetLowering::ConstraintWeight SparcTargetLowering::
3091 getSingleConstraintMatchWeight(AsmOperandInfo &info,
3092 const char *constraint) const {
3093 ConstraintWeight weight = CW_Invalid;
3094 Value *CallOperandVal = info.CallOperandVal;
3095 // If we don't have a value, we can't do a match,
3096 // but allow it at the lowest weight.
3097 if (CallOperandVal == NULL)
3100 // Look at the constraint type.
3101 switch (*constraint) {
3103 weight = TargetLowering::getSingleConstraintMatchWeight(info, constraint);
3106 if (ConstantInt *C = dyn_cast<ConstantInt>(info.CallOperandVal)) {
3107 if (isInt<13>(C->getSExtValue()))
3108 weight = CW_Constant;
3115 /// LowerAsmOperandForConstraint - Lower the specified operand into the Ops
3116 /// vector. If it is invalid, don't add anything to Ops.
3117 void SparcTargetLowering::
3118 LowerAsmOperandForConstraint(SDValue Op,
3119 std::string &Constraint,
3120 std::vector<SDValue> &Ops,
3121 SelectionDAG &DAG) const {
3122 SDValue Result(0, 0);
3124 // Only support length 1 constraints for now.
3125 if (Constraint.length() > 1)
3128 char ConstraintLetter = Constraint[0];
3129 switch (ConstraintLetter) {
3132 if (ConstantSDNode *C = dyn_cast<ConstantSDNode>(Op)) {
3133 if (isInt<13>(C->getSExtValue())) {
3134 Result = DAG.getTargetConstant(C->getSExtValue(), Op.getValueType());
3141 if (Result.getNode()) {
3142 Ops.push_back(Result);
3145 TargetLowering::LowerAsmOperandForConstraint(Op, Constraint, Ops, DAG);
3148 std::pair<unsigned, const TargetRegisterClass*>
3149 SparcTargetLowering::getRegForInlineAsmConstraint(const std::string &Constraint,
3151 if (Constraint.size() == 1) {
3152 switch (Constraint[0]) {
3154 return std::make_pair(0U, &SP::IntRegsRegClass);
3156 } else if (!Constraint.empty() && Constraint.size() <= 5
3157 && Constraint[0] == '{' && *(Constraint.end()-1) == '}') {
3158 // constraint = '{r<d>}'
3159 // Remove the braces from around the name.
3160 StringRef name(Constraint.data()+1, Constraint.size()-2);
3161 // Handle register aliases:
3166 uint64_t intVal = 0;
3167 if (name.substr(0, 1).equals("r")
3168 && !name.substr(1).getAsInteger(10, intVal) && intVal <= 31) {
3169 const char regTypes[] = { 'g', 'o', 'l', 'i' };
3170 char regType = regTypes[intVal/8];
3171 char regIdx = '0' + (intVal % 8);
3172 char tmp[] = { '{', regType, regIdx, '}', 0 };
3173 std::string newConstraint = std::string(tmp);
3174 return TargetLowering::getRegForInlineAsmConstraint(newConstraint, VT);
3178 return TargetLowering::getRegForInlineAsmConstraint(Constraint, VT);
3182 SparcTargetLowering::isOffsetFoldingLegal(const GlobalAddressSDNode *GA) const {
3183 // The Sparc target isn't yet aware of offsets.
3187 void SparcTargetLowering::ReplaceNodeResults(SDNode *N,
3188 SmallVectorImpl<SDValue>& Results,
3189 SelectionDAG &DAG) const {
3193 RTLIB::Libcall libCall = RTLIB::UNKNOWN_LIBCALL;
3195 switch (N->getOpcode()) {
3197 llvm_unreachable("Do not know how to custom type legalize this operation!");
3199 case ISD::FP_TO_SINT:
3200 case ISD::FP_TO_UINT:
3201 // Custom lower only if it involves f128 or i64.
3202 if (N->getOperand(0).getValueType() != MVT::f128
3203 || N->getValueType(0) != MVT::i64)
3205 libCall = ((N->getOpcode() == ISD::FP_TO_SINT)
3206 ? RTLIB::FPTOSINT_F128_I64
3207 : RTLIB::FPTOUINT_F128_I64);
3209 Results.push_back(LowerF128Op(SDValue(N, 0),
3211 getLibcallName(libCall),
3215 case ISD::SINT_TO_FP:
3216 case ISD::UINT_TO_FP:
3217 // Custom lower only if it involves f128 or i64.
3218 if (N->getValueType(0) != MVT::f128
3219 || N->getOperand(0).getValueType() != MVT::i64)
3222 libCall = ((N->getOpcode() == ISD::SINT_TO_FP)
3223 ? RTLIB::SINTTOFP_I64_F128
3224 : RTLIB::UINTTOFP_I64_F128);
3226 Results.push_back(LowerF128Op(SDValue(N, 0),
3228 getLibcallName(libCall),