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 "SparcMachineFunctionInfo.h"
17 #include "SparcRegisterInfo.h"
18 #include "SparcTargetMachine.h"
19 #include "MCTargetDesc/SparcBaseInfo.h"
20 #include "llvm/CodeGen/CallingConvLower.h"
21 #include "llvm/CodeGen/MachineFrameInfo.h"
22 #include "llvm/CodeGen/MachineFunction.h"
23 #include "llvm/CodeGen/MachineInstrBuilder.h"
24 #include "llvm/CodeGen/MachineRegisterInfo.h"
25 #include "llvm/CodeGen/SelectionDAG.h"
26 #include "llvm/CodeGen/TargetLoweringObjectFileImpl.h"
27 #include "llvm/IR/DerivedTypes.h"
28 #include "llvm/IR/Function.h"
29 #include "llvm/IR/Module.h"
30 #include "llvm/Support/ErrorHandling.h"
34 //===----------------------------------------------------------------------===//
35 // Calling Convention Implementation
36 //===----------------------------------------------------------------------===//
38 static bool CC_Sparc_Assign_SRet(unsigned &ValNo, MVT &ValVT,
39 MVT &LocVT, CCValAssign::LocInfo &LocInfo,
40 ISD::ArgFlagsTy &ArgFlags, CCState &State)
42 assert (ArgFlags.isSRet());
44 // Assign SRet argument.
45 State.addLoc(CCValAssign::getCustomMem(ValNo, ValVT,
51 static bool CC_Sparc_Assign_f64(unsigned &ValNo, MVT &ValVT,
52 MVT &LocVT, CCValAssign::LocInfo &LocInfo,
53 ISD::ArgFlagsTy &ArgFlags, CCState &State)
55 static const uint16_t RegList[] = {
56 SP::I0, SP::I1, SP::I2, SP::I3, SP::I4, SP::I5
58 // Try to get first reg.
59 if (unsigned Reg = State.AllocateReg(RegList, 6)) {
60 State.addLoc(CCValAssign::getCustomReg(ValNo, ValVT, Reg, LocVT, LocInfo));
62 // Assign whole thing in stack.
63 State.addLoc(CCValAssign::getCustomMem(ValNo, ValVT,
64 State.AllocateStack(8,4),
69 // Try to get second reg.
70 if (unsigned Reg = State.AllocateReg(RegList, 6))
71 State.addLoc(CCValAssign::getCustomReg(ValNo, ValVT, Reg, LocVT, LocInfo));
73 State.addLoc(CCValAssign::getCustomMem(ValNo, ValVT,
74 State.AllocateStack(4,4),
79 // Allocate a full-sized argument for the 64-bit ABI.
80 static bool CC_Sparc64_Full(unsigned &ValNo, MVT &ValVT,
81 MVT &LocVT, CCValAssign::LocInfo &LocInfo,
82 ISD::ArgFlagsTy &ArgFlags, CCState &State) {
83 assert((LocVT == MVT::f32 || LocVT == MVT::f128
84 || LocVT.getSizeInBits() == 64) &&
85 "Can't handle non-64 bits locations");
87 // Stack space is allocated for all arguments starting from [%fp+BIAS+128].
88 unsigned size = (LocVT == MVT::f128) ? 16 : 8;
89 unsigned alignment = (LocVT == MVT::f128) ? 16 : 8;
90 unsigned Offset = State.AllocateStack(size, alignment);
93 if (LocVT == MVT::i64 && Offset < 6*8)
94 // Promote integers to %i0-%i5.
95 Reg = SP::I0 + Offset/8;
96 else if (LocVT == MVT::f64 && Offset < 16*8)
97 // Promote doubles to %d0-%d30. (Which LLVM calls D0-D15).
98 Reg = SP::D0 + Offset/8;
99 else if (LocVT == MVT::f32 && Offset < 16*8)
100 // Promote floats to %f1, %f3, ...
101 Reg = SP::F1 + Offset/4;
102 else if (LocVT == MVT::f128 && Offset < 16*8)
103 // Promote long doubles to %q0-%q28. (Which LLVM calls Q0-Q7).
104 Reg = SP::Q0 + Offset/16;
106 // Promote to register when possible, otherwise use the stack slot.
108 State.addLoc(CCValAssign::getReg(ValNo, ValVT, Reg, LocVT, LocInfo));
112 // This argument goes on the stack in an 8-byte slot.
113 // When passing floats, LocVT is smaller than 8 bytes. Adjust the offset to
114 // the right-aligned float. The first 4 bytes of the stack slot are undefined.
115 if (LocVT == MVT::f32)
118 State.addLoc(CCValAssign::getMem(ValNo, ValVT, Offset, LocVT, LocInfo));
122 // Allocate a half-sized argument for the 64-bit ABI.
124 // This is used when passing { float, int } structs by value in registers.
125 static bool CC_Sparc64_Half(unsigned &ValNo, MVT &ValVT,
126 MVT &LocVT, CCValAssign::LocInfo &LocInfo,
127 ISD::ArgFlagsTy &ArgFlags, CCState &State) {
128 assert(LocVT.getSizeInBits() == 32 && "Can't handle non-32 bits locations");
129 unsigned Offset = State.AllocateStack(4, 4);
131 if (LocVT == MVT::f32 && Offset < 16*8) {
132 // Promote floats to %f0-%f31.
133 State.addLoc(CCValAssign::getReg(ValNo, ValVT, SP::F0 + Offset/4,
138 if (LocVT == MVT::i32 && Offset < 6*8) {
139 // Promote integers to %i0-%i5, using half the register.
140 unsigned Reg = SP::I0 + Offset/8;
142 LocInfo = CCValAssign::AExt;
144 // Set the Custom bit if this i32 goes in the high bits of a register.
146 State.addLoc(CCValAssign::getCustomReg(ValNo, ValVT, Reg,
149 State.addLoc(CCValAssign::getReg(ValNo, ValVT, Reg, LocVT, LocInfo));
153 State.addLoc(CCValAssign::getMem(ValNo, ValVT, Offset, LocVT, LocInfo));
157 #include "SparcGenCallingConv.inc"
159 // The calling conventions in SparcCallingConv.td are described in terms of the
160 // callee's register window. This function translates registers to the
161 // corresponding caller window %o register.
162 static unsigned toCallerWindow(unsigned Reg) {
163 assert(SP::I0 + 7 == SP::I7 && SP::O0 + 7 == SP::O7 && "Unexpected enum");
164 if (Reg >= SP::I0 && Reg <= SP::I7)
165 return Reg - SP::I0 + SP::O0;
170 SparcTargetLowering::LowerReturn(SDValue Chain,
171 CallingConv::ID CallConv, bool IsVarArg,
172 const SmallVectorImpl<ISD::OutputArg> &Outs,
173 const SmallVectorImpl<SDValue> &OutVals,
174 SDLoc DL, SelectionDAG &DAG) const {
175 if (Subtarget->is64Bit())
176 return LowerReturn_64(Chain, CallConv, IsVarArg, Outs, OutVals, DL, DAG);
177 return LowerReturn_32(Chain, CallConv, IsVarArg, Outs, OutVals, DL, DAG);
181 SparcTargetLowering::LowerReturn_32(SDValue Chain,
182 CallingConv::ID CallConv, bool IsVarArg,
183 const SmallVectorImpl<ISD::OutputArg> &Outs,
184 const SmallVectorImpl<SDValue> &OutVals,
185 SDLoc DL, SelectionDAG &DAG) const {
186 MachineFunction &MF = DAG.getMachineFunction();
188 // CCValAssign - represent the assignment of the return value to locations.
189 SmallVector<CCValAssign, 16> RVLocs;
191 // CCState - Info about the registers and stack slot.
192 CCState CCInfo(CallConv, IsVarArg, DAG.getMachineFunction(),
193 DAG.getTarget(), RVLocs, *DAG.getContext());
195 // Analyze return values.
196 CCInfo.AnalyzeReturn(Outs, RetCC_Sparc32);
199 SmallVector<SDValue, 4> RetOps(1, Chain);
200 // Make room for the return address offset.
201 RetOps.push_back(SDValue());
203 // Copy the result values into the output registers.
204 for (unsigned i = 0; i != RVLocs.size(); ++i) {
205 CCValAssign &VA = RVLocs[i];
206 assert(VA.isRegLoc() && "Can only return in registers!");
208 Chain = DAG.getCopyToReg(Chain, DL, VA.getLocReg(),
211 // Guarantee that all emitted copies are stuck together with flags.
212 Flag = Chain.getValue(1);
213 RetOps.push_back(DAG.getRegister(VA.getLocReg(), VA.getLocVT()));
216 unsigned RetAddrOffset = 8; // Call Inst + Delay Slot
217 // If the function returns a struct, copy the SRetReturnReg to I0
218 if (MF.getFunction()->hasStructRetAttr()) {
219 SparcMachineFunctionInfo *SFI = MF.getInfo<SparcMachineFunctionInfo>();
220 unsigned Reg = SFI->getSRetReturnReg();
222 llvm_unreachable("sret virtual register not created in the entry block");
223 SDValue Val = DAG.getCopyFromReg(Chain, DL, Reg, getPointerTy());
224 Chain = DAG.getCopyToReg(Chain, DL, SP::I0, Val, Flag);
225 Flag = Chain.getValue(1);
226 RetOps.push_back(DAG.getRegister(SP::I0, getPointerTy()));
227 RetAddrOffset = 12; // CallInst + Delay Slot + Unimp
230 RetOps[0] = Chain; // Update chain.
231 RetOps[1] = DAG.getConstant(RetAddrOffset, MVT::i32);
233 // Add the flag if we have it.
235 RetOps.push_back(Flag);
237 return DAG.getNode(SPISD::RET_FLAG, DL, MVT::Other,
238 &RetOps[0], RetOps.size());
241 // Lower return values for the 64-bit ABI.
242 // Return values are passed the exactly the same way as function arguments.
244 SparcTargetLowering::LowerReturn_64(SDValue Chain,
245 CallingConv::ID CallConv, bool IsVarArg,
246 const SmallVectorImpl<ISD::OutputArg> &Outs,
247 const SmallVectorImpl<SDValue> &OutVals,
248 SDLoc DL, SelectionDAG &DAG) const {
249 // CCValAssign - represent the assignment of the return value to locations.
250 SmallVector<CCValAssign, 16> RVLocs;
252 // CCState - Info about the registers and stack slot.
253 CCState CCInfo(CallConv, IsVarArg, DAG.getMachineFunction(),
254 DAG.getTarget(), RVLocs, *DAG.getContext());
256 // Analyze return values.
257 CCInfo.AnalyzeReturn(Outs, CC_Sparc64);
260 SmallVector<SDValue, 4> RetOps(1, Chain);
262 // The second operand on the return instruction is the return address offset.
263 // The return address is always %i7+8 with the 64-bit ABI.
264 RetOps.push_back(DAG.getConstant(8, MVT::i32));
266 // Copy the result values into the output registers.
267 for (unsigned i = 0; i != RVLocs.size(); ++i) {
268 CCValAssign &VA = RVLocs[i];
269 assert(VA.isRegLoc() && "Can only return in registers!");
270 SDValue OutVal = OutVals[i];
272 // Integer return values must be sign or zero extended by the callee.
273 switch (VA.getLocInfo()) {
274 case CCValAssign::SExt:
275 OutVal = DAG.getNode(ISD::SIGN_EXTEND, DL, VA.getLocVT(), OutVal);
277 case CCValAssign::ZExt:
278 OutVal = DAG.getNode(ISD::ZERO_EXTEND, DL, VA.getLocVT(), OutVal);
280 case CCValAssign::AExt:
281 OutVal = DAG.getNode(ISD::ANY_EXTEND, DL, VA.getLocVT(), OutVal);
286 // The custom bit on an i32 return value indicates that it should be passed
287 // in the high bits of the register.
288 if (VA.getValVT() == MVT::i32 && VA.needsCustom()) {
289 OutVal = DAG.getNode(ISD::SHL, DL, MVT::i64, OutVal,
290 DAG.getConstant(32, MVT::i32));
292 // The next value may go in the low bits of the same register.
293 // Handle both at once.
294 if (i+1 < RVLocs.size() && RVLocs[i+1].getLocReg() == VA.getLocReg()) {
295 SDValue NV = DAG.getNode(ISD::ZERO_EXTEND, DL, MVT::i64, OutVals[i+1]);
296 OutVal = DAG.getNode(ISD::OR, DL, MVT::i64, OutVal, NV);
297 // Skip the next value, it's already done.
302 Chain = DAG.getCopyToReg(Chain, DL, VA.getLocReg(), OutVal, Flag);
304 // Guarantee that all emitted copies are stuck together with flags.
305 Flag = Chain.getValue(1);
306 RetOps.push_back(DAG.getRegister(VA.getLocReg(), VA.getLocVT()));
309 RetOps[0] = Chain; // Update chain.
311 // Add the flag if we have it.
313 RetOps.push_back(Flag);
315 return DAG.getNode(SPISD::RET_FLAG, DL, MVT::Other,
316 &RetOps[0], RetOps.size());
319 SDValue SparcTargetLowering::
320 LowerFormalArguments(SDValue Chain,
321 CallingConv::ID CallConv,
323 const SmallVectorImpl<ISD::InputArg> &Ins,
326 SmallVectorImpl<SDValue> &InVals) const {
327 if (Subtarget->is64Bit())
328 return LowerFormalArguments_64(Chain, CallConv, IsVarArg, Ins,
330 return LowerFormalArguments_32(Chain, CallConv, IsVarArg, Ins,
334 /// LowerFormalArguments32 - V8 uses a very simple ABI, where all values are
335 /// passed in either one or two GPRs, including FP values. TODO: we should
336 /// pass FP values in FP registers for fastcc functions.
337 SDValue SparcTargetLowering::
338 LowerFormalArguments_32(SDValue Chain,
339 CallingConv::ID CallConv,
341 const SmallVectorImpl<ISD::InputArg> &Ins,
344 SmallVectorImpl<SDValue> &InVals) const {
345 MachineFunction &MF = DAG.getMachineFunction();
346 MachineRegisterInfo &RegInfo = MF.getRegInfo();
347 SparcMachineFunctionInfo *FuncInfo = MF.getInfo<SparcMachineFunctionInfo>();
349 // Assign locations to all of the incoming arguments.
350 SmallVector<CCValAssign, 16> ArgLocs;
351 CCState CCInfo(CallConv, isVarArg, DAG.getMachineFunction(),
352 getTargetMachine(), ArgLocs, *DAG.getContext());
353 CCInfo.AnalyzeFormalArguments(Ins, CC_Sparc32);
355 const unsigned StackOffset = 92;
357 for (unsigned i = 0, e = ArgLocs.size(); i != e; ++i) {
358 CCValAssign &VA = ArgLocs[i];
360 if (i == 0 && Ins[i].Flags.isSRet()) {
361 // Get SRet from [%fp+64].
362 int FrameIdx = MF.getFrameInfo()->CreateFixedObject(4, 64, true);
363 SDValue FIPtr = DAG.getFrameIndex(FrameIdx, MVT::i32);
364 SDValue Arg = DAG.getLoad(MVT::i32, dl, Chain, FIPtr,
365 MachinePointerInfo(),
366 false, false, false, 0);
367 InVals.push_back(Arg);
372 if (VA.needsCustom()) {
373 assert(VA.getLocVT() == MVT::f64);
374 unsigned VRegHi = RegInfo.createVirtualRegister(&SP::IntRegsRegClass);
375 MF.getRegInfo().addLiveIn(VA.getLocReg(), VRegHi);
376 SDValue HiVal = DAG.getCopyFromReg(Chain, dl, VRegHi, MVT::i32);
379 CCValAssign &NextVA = ArgLocs[++i];
382 if (NextVA.isMemLoc()) {
383 int FrameIdx = MF.getFrameInfo()->
384 CreateFixedObject(4, StackOffset+NextVA.getLocMemOffset(),true);
385 SDValue FIPtr = DAG.getFrameIndex(FrameIdx, MVT::i32);
386 LoVal = DAG.getLoad(MVT::i32, dl, Chain, FIPtr,
387 MachinePointerInfo(),
388 false, false, false, 0);
390 unsigned loReg = MF.addLiveIn(NextVA.getLocReg(),
391 &SP::IntRegsRegClass);
392 LoVal = DAG.getCopyFromReg(Chain, dl, loReg, MVT::i32);
395 DAG.getNode(ISD::BUILD_PAIR, dl, MVT::i64, LoVal, HiVal);
396 WholeValue = DAG.getNode(ISD::BITCAST, dl, MVT::f64, WholeValue);
397 InVals.push_back(WholeValue);
400 unsigned VReg = RegInfo.createVirtualRegister(&SP::IntRegsRegClass);
401 MF.getRegInfo().addLiveIn(VA.getLocReg(), VReg);
402 SDValue Arg = DAG.getCopyFromReg(Chain, dl, VReg, MVT::i32);
403 if (VA.getLocVT() == MVT::f32)
404 Arg = DAG.getNode(ISD::BITCAST, dl, MVT::f32, Arg);
405 else if (VA.getLocVT() != MVT::i32) {
406 Arg = DAG.getNode(ISD::AssertSext, dl, MVT::i32, Arg,
407 DAG.getValueType(VA.getLocVT()));
408 Arg = DAG.getNode(ISD::TRUNCATE, dl, VA.getLocVT(), Arg);
410 InVals.push_back(Arg);
414 assert(VA.isMemLoc());
416 unsigned Offset = VA.getLocMemOffset()+StackOffset;
418 if (VA.needsCustom()) {
419 assert(VA.getValVT() == MVT::f64);
420 // If it is double-word aligned, just load.
421 if (Offset % 8 == 0) {
422 int FI = MF.getFrameInfo()->CreateFixedObject(8,
425 SDValue FIPtr = DAG.getFrameIndex(FI, getPointerTy());
426 SDValue Load = DAG.getLoad(VA.getValVT(), dl, Chain, FIPtr,
427 MachinePointerInfo(),
428 false,false, false, 0);
429 InVals.push_back(Load);
433 int FI = MF.getFrameInfo()->CreateFixedObject(4,
436 SDValue FIPtr = DAG.getFrameIndex(FI, getPointerTy());
437 SDValue HiVal = DAG.getLoad(MVT::i32, dl, Chain, FIPtr,
438 MachinePointerInfo(),
439 false, false, false, 0);
440 int FI2 = MF.getFrameInfo()->CreateFixedObject(4,
443 SDValue FIPtr2 = DAG.getFrameIndex(FI2, getPointerTy());
445 SDValue LoVal = DAG.getLoad(MVT::i32, dl, Chain, FIPtr2,
446 MachinePointerInfo(),
447 false, false, false, 0);
450 DAG.getNode(ISD::BUILD_PAIR, dl, MVT::i64, LoVal, HiVal);
451 WholeValue = DAG.getNode(ISD::BITCAST, dl, MVT::f64, WholeValue);
452 InVals.push_back(WholeValue);
456 int FI = MF.getFrameInfo()->CreateFixedObject(4,
459 SDValue FIPtr = DAG.getFrameIndex(FI, getPointerTy());
461 if (VA.getValVT() == MVT::i32 || VA.getValVT() == MVT::f32) {
462 Load = DAG.getLoad(VA.getValVT(), dl, Chain, FIPtr,
463 MachinePointerInfo(),
464 false, false, false, 0);
466 ISD::LoadExtType LoadOp = ISD::SEXTLOAD;
467 // Sparc is big endian, so add an offset based on the ObjectVT.
468 unsigned Offset = 4-std::max(1U, VA.getValVT().getSizeInBits()/8);
469 FIPtr = DAG.getNode(ISD::ADD, dl, MVT::i32, FIPtr,
470 DAG.getConstant(Offset, MVT::i32));
471 Load = DAG.getExtLoad(LoadOp, dl, MVT::i32, Chain, FIPtr,
472 MachinePointerInfo(),
473 VA.getValVT(), false, false,0);
474 Load = DAG.getNode(ISD::TRUNCATE, dl, VA.getValVT(), Load);
476 InVals.push_back(Load);
479 if (MF.getFunction()->hasStructRetAttr()) {
480 // Copy the SRet Argument to SRetReturnReg.
481 SparcMachineFunctionInfo *SFI = MF.getInfo<SparcMachineFunctionInfo>();
482 unsigned Reg = SFI->getSRetReturnReg();
484 Reg = MF.getRegInfo().createVirtualRegister(&SP::IntRegsRegClass);
485 SFI->setSRetReturnReg(Reg);
487 SDValue Copy = DAG.getCopyToReg(DAG.getEntryNode(), dl, Reg, InVals[0]);
488 Chain = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Copy, Chain);
491 // Store remaining ArgRegs to the stack if this is a varargs function.
493 static const uint16_t ArgRegs[] = {
494 SP::I0, SP::I1, SP::I2, SP::I3, SP::I4, SP::I5
496 unsigned NumAllocated = CCInfo.getFirstUnallocated(ArgRegs, 6);
497 const uint16_t *CurArgReg = ArgRegs+NumAllocated, *ArgRegEnd = ArgRegs+6;
498 unsigned ArgOffset = CCInfo.getNextStackOffset();
499 if (NumAllocated == 6)
500 ArgOffset += StackOffset;
503 ArgOffset = 68+4*NumAllocated;
506 // Remember the vararg offset for the va_start implementation.
507 FuncInfo->setVarArgsFrameOffset(ArgOffset);
509 std::vector<SDValue> OutChains;
511 for (; CurArgReg != ArgRegEnd; ++CurArgReg) {
512 unsigned VReg = RegInfo.createVirtualRegister(&SP::IntRegsRegClass);
513 MF.getRegInfo().addLiveIn(*CurArgReg, VReg);
514 SDValue Arg = DAG.getCopyFromReg(DAG.getRoot(), dl, VReg, MVT::i32);
516 int FrameIdx = MF.getFrameInfo()->CreateFixedObject(4, ArgOffset,
518 SDValue FIPtr = DAG.getFrameIndex(FrameIdx, MVT::i32);
520 OutChains.push_back(DAG.getStore(DAG.getRoot(), dl, Arg, FIPtr,
521 MachinePointerInfo(),
526 if (!OutChains.empty()) {
527 OutChains.push_back(Chain);
528 Chain = DAG.getNode(ISD::TokenFactor, dl, MVT::Other,
529 &OutChains[0], OutChains.size());
536 // Lower formal arguments for the 64 bit ABI.
537 SDValue SparcTargetLowering::
538 LowerFormalArguments_64(SDValue Chain,
539 CallingConv::ID CallConv,
541 const SmallVectorImpl<ISD::InputArg> &Ins,
544 SmallVectorImpl<SDValue> &InVals) const {
545 MachineFunction &MF = DAG.getMachineFunction();
547 // Analyze arguments according to CC_Sparc64.
548 SmallVector<CCValAssign, 16> ArgLocs;
549 CCState CCInfo(CallConv, IsVarArg, DAG.getMachineFunction(),
550 getTargetMachine(), ArgLocs, *DAG.getContext());
551 CCInfo.AnalyzeFormalArguments(Ins, CC_Sparc64);
553 // The argument array begins at %fp+BIAS+128, after the register save area.
554 const unsigned ArgArea = 128;
556 for (unsigned i = 0, e = ArgLocs.size(); i != e; ++i) {
557 CCValAssign &VA = ArgLocs[i];
559 // This argument is passed in a register.
560 // All integer register arguments are promoted by the caller to i64.
562 // Create a virtual register for the promoted live-in value.
563 unsigned VReg = MF.addLiveIn(VA.getLocReg(),
564 getRegClassFor(VA.getLocVT()));
565 SDValue Arg = DAG.getCopyFromReg(Chain, DL, VReg, VA.getLocVT());
567 // Get the high bits for i32 struct elements.
568 if (VA.getValVT() == MVT::i32 && VA.needsCustom())
569 Arg = DAG.getNode(ISD::SRL, DL, VA.getLocVT(), Arg,
570 DAG.getConstant(32, MVT::i32));
572 // The caller promoted the argument, so insert an Assert?ext SDNode so we
573 // won't promote the value again in this function.
574 switch (VA.getLocInfo()) {
575 case CCValAssign::SExt:
576 Arg = DAG.getNode(ISD::AssertSext, DL, VA.getLocVT(), Arg,
577 DAG.getValueType(VA.getValVT()));
579 case CCValAssign::ZExt:
580 Arg = DAG.getNode(ISD::AssertZext, DL, VA.getLocVT(), Arg,
581 DAG.getValueType(VA.getValVT()));
587 // Truncate the register down to the argument type.
589 Arg = DAG.getNode(ISD::TRUNCATE, DL, VA.getValVT(), Arg);
591 InVals.push_back(Arg);
595 // The registers are exhausted. This argument was passed on the stack.
596 assert(VA.isMemLoc());
597 // The CC_Sparc64_Full/Half functions compute stack offsets relative to the
598 // beginning of the arguments area at %fp+BIAS+128.
599 unsigned Offset = VA.getLocMemOffset() + ArgArea;
600 unsigned ValSize = VA.getValVT().getSizeInBits() / 8;
601 // Adjust offset for extended arguments, SPARC is big-endian.
602 // The caller will have written the full slot with extended bytes, but we
603 // prefer our own extending loads.
605 Offset += 8 - ValSize;
606 int FI = MF.getFrameInfo()->CreateFixedObject(ValSize, Offset, true);
607 InVals.push_back(DAG.getLoad(VA.getValVT(), DL, Chain,
608 DAG.getFrameIndex(FI, getPointerTy()),
609 MachinePointerInfo::getFixedStack(FI),
610 false, false, false, 0));
616 // This function takes variable arguments, some of which may have been passed
617 // in registers %i0-%i5. Variable floating point arguments are never passed
618 // in floating point registers. They go on %i0-%i5 or on the stack like
619 // integer arguments.
621 // The va_start intrinsic needs to know the offset to the first variable
623 unsigned ArgOffset = CCInfo.getNextStackOffset();
624 SparcMachineFunctionInfo *FuncInfo = MF.getInfo<SparcMachineFunctionInfo>();
625 // Skip the 128 bytes of register save area.
626 FuncInfo->setVarArgsFrameOffset(ArgOffset + ArgArea +
627 Subtarget->getStackPointerBias());
629 // Save the variable arguments that were passed in registers.
630 // The caller is required to reserve stack space for 6 arguments regardless
631 // of how many arguments were actually passed.
632 SmallVector<SDValue, 8> OutChains;
633 for (; ArgOffset < 6*8; ArgOffset += 8) {
634 unsigned VReg = MF.addLiveIn(SP::I0 + ArgOffset/8, &SP::I64RegsRegClass);
635 SDValue VArg = DAG.getCopyFromReg(Chain, DL, VReg, MVT::i64);
636 int FI = MF.getFrameInfo()->CreateFixedObject(8, ArgOffset + ArgArea, true);
637 OutChains.push_back(DAG.getStore(Chain, DL, VArg,
638 DAG.getFrameIndex(FI, getPointerTy()),
639 MachinePointerInfo::getFixedStack(FI),
643 if (!OutChains.empty())
644 Chain = DAG.getNode(ISD::TokenFactor, DL, MVT::Other,
645 &OutChains[0], OutChains.size());
651 SparcTargetLowering::LowerCall(TargetLowering::CallLoweringInfo &CLI,
652 SmallVectorImpl<SDValue> &InVals) const {
653 if (Subtarget->is64Bit())
654 return LowerCall_64(CLI, InVals);
655 return LowerCall_32(CLI, InVals);
658 static bool hasReturnsTwiceAttr(SelectionDAG &DAG, SDValue Callee,
659 ImmutableCallSite *CS) {
661 return CS->hasFnAttr(Attribute::ReturnsTwice);
663 const Function *CalleeFn = 0;
664 if (GlobalAddressSDNode *G = dyn_cast<GlobalAddressSDNode>(Callee)) {
665 CalleeFn = dyn_cast<Function>(G->getGlobal());
666 } else if (ExternalSymbolSDNode *E =
667 dyn_cast<ExternalSymbolSDNode>(Callee)) {
668 const Function *Fn = DAG.getMachineFunction().getFunction();
669 const Module *M = Fn->getParent();
670 const char *CalleeName = E->getSymbol();
671 CalleeFn = M->getFunction(CalleeName);
676 return CalleeFn->hasFnAttribute(Attribute::ReturnsTwice);
679 // Lower a call for the 32-bit ABI.
681 SparcTargetLowering::LowerCall_32(TargetLowering::CallLoweringInfo &CLI,
682 SmallVectorImpl<SDValue> &InVals) const {
683 SelectionDAG &DAG = CLI.DAG;
685 SmallVectorImpl<ISD::OutputArg> &Outs = CLI.Outs;
686 SmallVectorImpl<SDValue> &OutVals = CLI.OutVals;
687 SmallVectorImpl<ISD::InputArg> &Ins = CLI.Ins;
688 SDValue Chain = CLI.Chain;
689 SDValue Callee = CLI.Callee;
690 bool &isTailCall = CLI.IsTailCall;
691 CallingConv::ID CallConv = CLI.CallConv;
692 bool isVarArg = CLI.IsVarArg;
694 // Sparc target does not yet support tail call optimization.
697 // Analyze operands of the call, assigning locations to each operand.
698 SmallVector<CCValAssign, 16> ArgLocs;
699 CCState CCInfo(CallConv, isVarArg, DAG.getMachineFunction(),
700 DAG.getTarget(), ArgLocs, *DAG.getContext());
701 CCInfo.AnalyzeCallOperands(Outs, CC_Sparc32);
703 // Get the size of the outgoing arguments stack space requirement.
704 unsigned ArgsSize = CCInfo.getNextStackOffset();
706 // Keep stack frames 8-byte aligned.
707 ArgsSize = (ArgsSize+7) & ~7;
709 MachineFrameInfo *MFI = DAG.getMachineFunction().getFrameInfo();
711 // Create local copies for byval args.
712 SmallVector<SDValue, 8> ByValArgs;
713 for (unsigned i = 0, e = Outs.size(); i != e; ++i) {
714 ISD::ArgFlagsTy Flags = Outs[i].Flags;
715 if (!Flags.isByVal())
718 SDValue Arg = OutVals[i];
719 unsigned Size = Flags.getByValSize();
720 unsigned Align = Flags.getByValAlign();
722 int FI = MFI->CreateStackObject(Size, Align, false);
723 SDValue FIPtr = DAG.getFrameIndex(FI, getPointerTy());
724 SDValue SizeNode = DAG.getConstant(Size, MVT::i32);
726 Chain = DAG.getMemcpy(Chain, dl, FIPtr, Arg, SizeNode, Align,
727 false, // isVolatile,
728 (Size <= 32), // AlwaysInline if size <= 32
729 MachinePointerInfo(), MachinePointerInfo());
730 ByValArgs.push_back(FIPtr);
733 Chain = DAG.getCALLSEQ_START(Chain, DAG.getIntPtrConstant(ArgsSize, true),
736 SmallVector<std::pair<unsigned, SDValue>, 8> RegsToPass;
737 SmallVector<SDValue, 8> MemOpChains;
739 const unsigned StackOffset = 92;
740 bool hasStructRetAttr = false;
741 // Walk the register/memloc assignments, inserting copies/loads.
742 for (unsigned i = 0, realArgIdx = 0, byvalArgIdx = 0, e = ArgLocs.size();
745 CCValAssign &VA = ArgLocs[i];
746 SDValue Arg = OutVals[realArgIdx];
748 ISD::ArgFlagsTy Flags = Outs[realArgIdx].Flags;
750 // Use local copy if it is a byval arg.
752 Arg = ByValArgs[byvalArgIdx++];
754 // Promote the value if needed.
755 switch (VA.getLocInfo()) {
756 default: llvm_unreachable("Unknown loc info!");
757 case CCValAssign::Full: break;
758 case CCValAssign::SExt:
759 Arg = DAG.getNode(ISD::SIGN_EXTEND, dl, VA.getLocVT(), Arg);
761 case CCValAssign::ZExt:
762 Arg = DAG.getNode(ISD::ZERO_EXTEND, dl, VA.getLocVT(), Arg);
764 case CCValAssign::AExt:
765 Arg = DAG.getNode(ISD::ANY_EXTEND, dl, VA.getLocVT(), Arg);
767 case CCValAssign::BCvt:
768 Arg = DAG.getNode(ISD::BITCAST, dl, VA.getLocVT(), Arg);
772 if (Flags.isSRet()) {
773 assert(VA.needsCustom());
774 // store SRet argument in %sp+64
775 SDValue StackPtr = DAG.getRegister(SP::O6, MVT::i32);
776 SDValue PtrOff = DAG.getIntPtrConstant(64);
777 PtrOff = DAG.getNode(ISD::ADD, dl, MVT::i32, StackPtr, PtrOff);
778 MemOpChains.push_back(DAG.getStore(Chain, dl, Arg, PtrOff,
779 MachinePointerInfo(),
781 hasStructRetAttr = true;
785 if (VA.needsCustom()) {
786 assert(VA.getLocVT() == MVT::f64);
789 unsigned Offset = VA.getLocMemOffset() + StackOffset;
790 // if it is double-word aligned, just store.
791 if (Offset % 8 == 0) {
792 SDValue StackPtr = DAG.getRegister(SP::O6, MVT::i32);
793 SDValue PtrOff = DAG.getIntPtrConstant(Offset);
794 PtrOff = DAG.getNode(ISD::ADD, dl, MVT::i32, StackPtr, PtrOff);
795 MemOpChains.push_back(DAG.getStore(Chain, dl, Arg, PtrOff,
796 MachinePointerInfo(),
802 SDValue StackPtr = DAG.CreateStackTemporary(MVT::f64, MVT::i32);
803 SDValue Store = DAG.getStore(DAG.getEntryNode(), dl,
804 Arg, StackPtr, MachinePointerInfo(),
806 // Sparc is big-endian, so the high part comes first.
807 SDValue Hi = DAG.getLoad(MVT::i32, dl, Store, StackPtr,
808 MachinePointerInfo(), false, false, false, 0);
809 // Increment the pointer to the other half.
810 StackPtr = DAG.getNode(ISD::ADD, dl, StackPtr.getValueType(), StackPtr,
811 DAG.getIntPtrConstant(4));
812 // Load the low part.
813 SDValue Lo = DAG.getLoad(MVT::i32, dl, Store, StackPtr,
814 MachinePointerInfo(), false, false, false, 0);
817 RegsToPass.push_back(std::make_pair(VA.getLocReg(), Hi));
819 CCValAssign &NextVA = ArgLocs[++i];
820 if (NextVA.isRegLoc()) {
821 RegsToPass.push_back(std::make_pair(NextVA.getLocReg(), Lo));
823 // Store the low part in stack.
824 unsigned Offset = NextVA.getLocMemOffset() + StackOffset;
825 SDValue StackPtr = DAG.getRegister(SP::O6, MVT::i32);
826 SDValue PtrOff = DAG.getIntPtrConstant(Offset);
827 PtrOff = DAG.getNode(ISD::ADD, dl, MVT::i32, StackPtr, PtrOff);
828 MemOpChains.push_back(DAG.getStore(Chain, dl, Lo, PtrOff,
829 MachinePointerInfo(),
833 unsigned Offset = VA.getLocMemOffset() + StackOffset;
834 // Store the high part.
835 SDValue StackPtr = DAG.getRegister(SP::O6, MVT::i32);
836 SDValue PtrOff = DAG.getIntPtrConstant(Offset);
837 PtrOff = DAG.getNode(ISD::ADD, dl, MVT::i32, StackPtr, PtrOff);
838 MemOpChains.push_back(DAG.getStore(Chain, dl, Hi, PtrOff,
839 MachinePointerInfo(),
841 // Store the low part.
842 PtrOff = DAG.getIntPtrConstant(Offset+4);
843 PtrOff = DAG.getNode(ISD::ADD, dl, MVT::i32, StackPtr, PtrOff);
844 MemOpChains.push_back(DAG.getStore(Chain, dl, Lo, PtrOff,
845 MachinePointerInfo(),
851 // Arguments that can be passed on register must be kept at
854 if (VA.getLocVT() != MVT::f32) {
855 RegsToPass.push_back(std::make_pair(VA.getLocReg(), Arg));
858 Arg = DAG.getNode(ISD::BITCAST, dl, MVT::i32, Arg);
859 RegsToPass.push_back(std::make_pair(VA.getLocReg(), Arg));
863 assert(VA.isMemLoc());
865 // Create a store off the stack pointer for this argument.
866 SDValue StackPtr = DAG.getRegister(SP::O6, MVT::i32);
867 SDValue PtrOff = DAG.getIntPtrConstant(VA.getLocMemOffset()+StackOffset);
868 PtrOff = DAG.getNode(ISD::ADD, dl, MVT::i32, StackPtr, PtrOff);
869 MemOpChains.push_back(DAG.getStore(Chain, dl, Arg, PtrOff,
870 MachinePointerInfo(),
875 // Emit all stores, make sure the occur before any copies into physregs.
876 if (!MemOpChains.empty())
877 Chain = DAG.getNode(ISD::TokenFactor, dl, MVT::Other,
878 &MemOpChains[0], MemOpChains.size());
880 // Build a sequence of copy-to-reg nodes chained together with token
881 // chain and flag operands which copy the outgoing args into registers.
882 // The InFlag in necessary since all emitted instructions must be
885 for (unsigned i = 0, e = RegsToPass.size(); i != e; ++i) {
886 unsigned Reg = toCallerWindow(RegsToPass[i].first);
887 Chain = DAG.getCopyToReg(Chain, dl, Reg, RegsToPass[i].second, InFlag);
888 InFlag = Chain.getValue(1);
891 unsigned SRetArgSize = (hasStructRetAttr)? getSRetArgSize(DAG, Callee):0;
892 bool hasReturnsTwice = hasReturnsTwiceAttr(DAG, Callee, CLI.CS);
894 // If the callee is a GlobalAddress node (quite common, every direct call is)
895 // turn it into a TargetGlobalAddress node so that legalize doesn't hack it.
896 // Likewise ExternalSymbol -> TargetExternalSymbol.
897 if (GlobalAddressSDNode *G = dyn_cast<GlobalAddressSDNode>(Callee))
898 Callee = DAG.getTargetGlobalAddress(G->getGlobal(), dl, MVT::i32);
899 else if (ExternalSymbolSDNode *E = dyn_cast<ExternalSymbolSDNode>(Callee))
900 Callee = DAG.getTargetExternalSymbol(E->getSymbol(), MVT::i32);
902 // Returns a chain & a flag for retval copy to use
903 SDVTList NodeTys = DAG.getVTList(MVT::Other, MVT::Glue);
904 SmallVector<SDValue, 8> Ops;
905 Ops.push_back(Chain);
906 Ops.push_back(Callee);
907 if (hasStructRetAttr)
908 Ops.push_back(DAG.getTargetConstant(SRetArgSize, MVT::i32));
909 for (unsigned i = 0, e = RegsToPass.size(); i != e; ++i)
910 Ops.push_back(DAG.getRegister(toCallerWindow(RegsToPass[i].first),
911 RegsToPass[i].second.getValueType()));
913 // Add a register mask operand representing the call-preserved registers.
914 const SparcRegisterInfo *TRI =
915 ((const SparcTargetMachine&)getTargetMachine()).getRegisterInfo();
916 const uint32_t *Mask = ((hasReturnsTwice)
917 ? TRI->getRTCallPreservedMask(CallConv)
918 : TRI->getCallPreservedMask(CallConv));
919 assert(Mask && "Missing call preserved mask for calling convention");
920 Ops.push_back(DAG.getRegisterMask(Mask));
922 if (InFlag.getNode())
923 Ops.push_back(InFlag);
925 Chain = DAG.getNode(SPISD::CALL, dl, NodeTys, &Ops[0], Ops.size());
926 InFlag = Chain.getValue(1);
928 Chain = DAG.getCALLSEQ_END(Chain, DAG.getIntPtrConstant(ArgsSize, true),
929 DAG.getIntPtrConstant(0, true), InFlag, dl);
930 InFlag = Chain.getValue(1);
932 // Assign locations to each value returned by this call.
933 SmallVector<CCValAssign, 16> RVLocs;
934 CCState RVInfo(CallConv, isVarArg, DAG.getMachineFunction(),
935 DAG.getTarget(), RVLocs, *DAG.getContext());
937 RVInfo.AnalyzeCallResult(Ins, RetCC_Sparc32);
939 // Copy all of the result registers out of their specified physreg.
940 for (unsigned i = 0; i != RVLocs.size(); ++i) {
941 Chain = DAG.getCopyFromReg(Chain, dl, toCallerWindow(RVLocs[i].getLocReg()),
942 RVLocs[i].getValVT(), InFlag).getValue(1);
943 InFlag = Chain.getValue(2);
944 InVals.push_back(Chain.getValue(0));
950 // This functions returns true if CalleeName is a ABI function that returns
951 // a long double (fp128).
952 static bool isFP128ABICall(const char *CalleeName)
954 static const char *const ABICalls[] =
955 { "_Q_add", "_Q_sub", "_Q_mul", "_Q_div",
957 "_Q_itoq", "_Q_stoq", "_Q_dtoq", "_Q_utoq",
958 "_Q_lltoq", "_Q_ulltoq",
961 for (const char * const *I = ABICalls; *I != 0; ++I)
962 if (strcmp(CalleeName, *I) == 0)
968 SparcTargetLowering::getSRetArgSize(SelectionDAG &DAG, SDValue Callee) const
970 const Function *CalleeFn = 0;
971 if (GlobalAddressSDNode *G = dyn_cast<GlobalAddressSDNode>(Callee)) {
972 CalleeFn = dyn_cast<Function>(G->getGlobal());
973 } else if (ExternalSymbolSDNode *E =
974 dyn_cast<ExternalSymbolSDNode>(Callee)) {
975 const Function *Fn = DAG.getMachineFunction().getFunction();
976 const Module *M = Fn->getParent();
977 const char *CalleeName = E->getSymbol();
978 CalleeFn = M->getFunction(CalleeName);
979 if (!CalleeFn && isFP128ABICall(CalleeName))
980 return 16; // Return sizeof(fp128)
986 assert(CalleeFn->hasStructRetAttr() &&
987 "Callee does not have the StructRet attribute.");
989 PointerType *Ty = cast<PointerType>(CalleeFn->arg_begin()->getType());
990 Type *ElementTy = Ty->getElementType();
991 return getDataLayout()->getTypeAllocSize(ElementTy);
995 // Fixup floating point arguments in the ... part of a varargs call.
997 // The SPARC v9 ABI requires that floating point arguments are treated the same
998 // as integers when calling a varargs function. This does not apply to the
999 // fixed arguments that are part of the function's prototype.
1001 // This function post-processes a CCValAssign array created by
1002 // AnalyzeCallOperands().
1003 static void fixupVariableFloatArgs(SmallVectorImpl<CCValAssign> &ArgLocs,
1004 ArrayRef<ISD::OutputArg> Outs) {
1005 for (unsigned i = 0, e = ArgLocs.size(); i != e; ++i) {
1006 const CCValAssign &VA = ArgLocs[i];
1007 MVT ValTy = VA.getLocVT();
1008 // FIXME: What about f32 arguments? C promotes them to f64 when calling
1009 // varargs functions.
1010 if (!VA.isRegLoc() || (ValTy != MVT::f64 && ValTy != MVT::f128))
1012 // The fixed arguments to a varargs function still go in FP registers.
1013 if (Outs[VA.getValNo()].IsFixed)
1016 // This floating point argument should be reassigned.
1019 // Determine the offset into the argument array.
1020 unsigned firstReg = (ValTy == MVT::f64) ? SP::D0 : SP::Q0;
1021 unsigned argSize = (ValTy == MVT::f64) ? 8 : 16;
1022 unsigned Offset = argSize * (VA.getLocReg() - firstReg);
1023 assert(Offset < 16*8 && "Offset out of range, bad register enum?");
1026 // This argument should go in %i0-%i5.
1027 unsigned IReg = SP::I0 + Offset/8;
1028 if (ValTy == MVT::f64)
1029 // Full register, just bitconvert into i64.
1030 NewVA = CCValAssign::getReg(VA.getValNo(), VA.getValVT(),
1031 IReg, MVT::i64, CCValAssign::BCvt);
1033 assert(ValTy == MVT::f128 && "Unexpected type!");
1034 // Full register, just bitconvert into i128 -- We will lower this into
1035 // two i64s in LowerCall_64.
1036 NewVA = CCValAssign::getCustomReg(VA.getValNo(), VA.getValVT(),
1037 IReg, MVT::i128, CCValAssign::BCvt);
1040 // This needs to go to memory, we're out of integer registers.
1041 NewVA = CCValAssign::getMem(VA.getValNo(), VA.getValVT(),
1042 Offset, VA.getLocVT(), VA.getLocInfo());
1048 // Lower a call for the 64-bit ABI.
1050 SparcTargetLowering::LowerCall_64(TargetLowering::CallLoweringInfo &CLI,
1051 SmallVectorImpl<SDValue> &InVals) const {
1052 SelectionDAG &DAG = CLI.DAG;
1054 SDValue Chain = CLI.Chain;
1056 // Sparc target does not yet support tail call optimization.
1057 CLI.IsTailCall = false;
1059 // Analyze operands of the call, assigning locations to each operand.
1060 SmallVector<CCValAssign, 16> ArgLocs;
1061 CCState CCInfo(CLI.CallConv, CLI.IsVarArg, DAG.getMachineFunction(),
1062 DAG.getTarget(), ArgLocs, *DAG.getContext());
1063 CCInfo.AnalyzeCallOperands(CLI.Outs, CC_Sparc64);
1065 // Get the size of the outgoing arguments stack space requirement.
1066 // The stack offset computed by CC_Sparc64 includes all arguments.
1067 // Called functions expect 6 argument words to exist in the stack frame, used
1069 unsigned ArgsSize = std::max(6*8u, CCInfo.getNextStackOffset());
1071 // Keep stack frames 16-byte aligned.
1072 ArgsSize = RoundUpToAlignment(ArgsSize, 16);
1074 // Varargs calls require special treatment.
1076 fixupVariableFloatArgs(ArgLocs, CLI.Outs);
1078 // Adjust the stack pointer to make room for the arguments.
1079 // FIXME: Use hasReservedCallFrame to avoid %sp adjustments around all calls
1080 // with more than 6 arguments.
1081 Chain = DAG.getCALLSEQ_START(Chain, DAG.getIntPtrConstant(ArgsSize, true),
1084 // Collect the set of registers to pass to the function and their values.
1085 // This will be emitted as a sequence of CopyToReg nodes glued to the call
1087 SmallVector<std::pair<unsigned, SDValue>, 8> RegsToPass;
1089 // Collect chains from all the memory opeations that copy arguments to the
1090 // stack. They must follow the stack pointer adjustment above and precede the
1091 // call instruction itself.
1092 SmallVector<SDValue, 8> MemOpChains;
1094 for (unsigned i = 0, e = ArgLocs.size(); i != e; ++i) {
1095 const CCValAssign &VA = ArgLocs[i];
1096 SDValue Arg = CLI.OutVals[i];
1098 // Promote the value if needed.
1099 switch (VA.getLocInfo()) {
1101 llvm_unreachable("Unknown location info!");
1102 case CCValAssign::Full:
1104 case CCValAssign::SExt:
1105 Arg = DAG.getNode(ISD::SIGN_EXTEND, DL, VA.getLocVT(), Arg);
1107 case CCValAssign::ZExt:
1108 Arg = DAG.getNode(ISD::ZERO_EXTEND, DL, VA.getLocVT(), Arg);
1110 case CCValAssign::AExt:
1111 Arg = DAG.getNode(ISD::ANY_EXTEND, DL, VA.getLocVT(), Arg);
1113 case CCValAssign::BCvt:
1114 // fixupVariableFloatArgs() may create bitcasts from f128 to i128. But
1115 // SPARC does not support i128 natively. Lower it into two i64, see below.
1116 if (!VA.needsCustom() || VA.getValVT() != MVT::f128
1117 || VA.getLocVT() != MVT::i128)
1118 Arg = DAG.getNode(ISD::BITCAST, DL, VA.getLocVT(), Arg);
1122 if (VA.isRegLoc()) {
1123 if (VA.needsCustom() && VA.getValVT() == MVT::f128
1124 && VA.getLocVT() == MVT::i128) {
1125 // Store and reload into the interger register reg and reg+1.
1126 unsigned Offset = 8 * (VA.getLocReg() - SP::I0);
1127 unsigned StackOffset = Offset + Subtarget->getStackPointerBias() + 128;
1128 SDValue StackPtr = DAG.getRegister(SP::O6, getPointerTy());
1129 SDValue HiPtrOff = DAG.getIntPtrConstant(StackOffset);
1130 HiPtrOff = DAG.getNode(ISD::ADD, DL, getPointerTy(), StackPtr,
1132 SDValue LoPtrOff = DAG.getIntPtrConstant(StackOffset + 8);
1133 LoPtrOff = DAG.getNode(ISD::ADD, DL, getPointerTy(), StackPtr,
1136 // Store to %sp+BIAS+128+Offset
1137 SDValue Store = DAG.getStore(Chain, DL, Arg, HiPtrOff,
1138 MachinePointerInfo(),
1140 // Load into Reg and Reg+1
1141 SDValue Hi64 = DAG.getLoad(MVT::i64, DL, Store, HiPtrOff,
1142 MachinePointerInfo(),
1143 false, false, false, 0);
1144 SDValue Lo64 = DAG.getLoad(MVT::i64, DL, Store, LoPtrOff,
1145 MachinePointerInfo(),
1146 false, false, false, 0);
1147 RegsToPass.push_back(std::make_pair(toCallerWindow(VA.getLocReg()),
1149 RegsToPass.push_back(std::make_pair(toCallerWindow(VA.getLocReg()+1),
1154 // The custom bit on an i32 return value indicates that it should be
1155 // passed in the high bits of the register.
1156 if (VA.getValVT() == MVT::i32 && VA.needsCustom()) {
1157 Arg = DAG.getNode(ISD::SHL, DL, MVT::i64, Arg,
1158 DAG.getConstant(32, MVT::i32));
1160 // The next value may go in the low bits of the same register.
1161 // Handle both at once.
1162 if (i+1 < ArgLocs.size() && ArgLocs[i+1].isRegLoc() &&
1163 ArgLocs[i+1].getLocReg() == VA.getLocReg()) {
1164 SDValue NV = DAG.getNode(ISD::ZERO_EXTEND, DL, MVT::i64,
1166 Arg = DAG.getNode(ISD::OR, DL, MVT::i64, Arg, NV);
1167 // Skip the next value, it's already done.
1171 RegsToPass.push_back(std::make_pair(toCallerWindow(VA.getLocReg()), Arg));
1175 assert(VA.isMemLoc());
1177 // Create a store off the stack pointer for this argument.
1178 SDValue StackPtr = DAG.getRegister(SP::O6, getPointerTy());
1179 // The argument area starts at %fp+BIAS+128 in the callee frame,
1180 // %sp+BIAS+128 in ours.
1181 SDValue PtrOff = DAG.getIntPtrConstant(VA.getLocMemOffset() +
1182 Subtarget->getStackPointerBias() +
1184 PtrOff = DAG.getNode(ISD::ADD, DL, getPointerTy(), StackPtr, PtrOff);
1185 MemOpChains.push_back(DAG.getStore(Chain, DL, Arg, PtrOff,
1186 MachinePointerInfo(),
1190 // Emit all stores, make sure they occur before the call.
1191 if (!MemOpChains.empty())
1192 Chain = DAG.getNode(ISD::TokenFactor, DL, MVT::Other,
1193 &MemOpChains[0], MemOpChains.size());
1195 // Build a sequence of CopyToReg nodes glued together with token chain and
1196 // glue operands which copy the outgoing args into registers. The InGlue is
1197 // necessary since all emitted instructions must be stuck together in order
1198 // to pass the live physical registers.
1200 for (unsigned i = 0, e = RegsToPass.size(); i != e; ++i) {
1201 Chain = DAG.getCopyToReg(Chain, DL,
1202 RegsToPass[i].first, RegsToPass[i].second, InGlue);
1203 InGlue = Chain.getValue(1);
1206 // If the callee is a GlobalAddress node (quite common, every direct call is)
1207 // turn it into a TargetGlobalAddress node so that legalize doesn't hack it.
1208 // Likewise ExternalSymbol -> TargetExternalSymbol.
1209 SDValue Callee = CLI.Callee;
1210 bool hasReturnsTwice = hasReturnsTwiceAttr(DAG, Callee, CLI.CS);
1211 if (GlobalAddressSDNode *G = dyn_cast<GlobalAddressSDNode>(Callee))
1212 Callee = DAG.getTargetGlobalAddress(G->getGlobal(), DL, getPointerTy());
1213 else if (ExternalSymbolSDNode *E = dyn_cast<ExternalSymbolSDNode>(Callee))
1214 Callee = DAG.getTargetExternalSymbol(E->getSymbol(), getPointerTy());
1216 // Build the operands for the call instruction itself.
1217 SmallVector<SDValue, 8> Ops;
1218 Ops.push_back(Chain);
1219 Ops.push_back(Callee);
1220 for (unsigned i = 0, e = RegsToPass.size(); i != e; ++i)
1221 Ops.push_back(DAG.getRegister(RegsToPass[i].first,
1222 RegsToPass[i].second.getValueType()));
1224 // Add a register mask operand representing the call-preserved registers.
1225 const SparcRegisterInfo *TRI =
1226 ((const SparcTargetMachine&)getTargetMachine()).getRegisterInfo();
1227 const uint32_t *Mask = ((hasReturnsTwice)
1228 ? TRI->getRTCallPreservedMask(CLI.CallConv)
1229 : TRI->getCallPreservedMask(CLI.CallConv));
1230 assert(Mask && "Missing call preserved mask for calling convention");
1231 Ops.push_back(DAG.getRegisterMask(Mask));
1233 // Make sure the CopyToReg nodes are glued to the call instruction which
1234 // consumes the registers.
1235 if (InGlue.getNode())
1236 Ops.push_back(InGlue);
1238 // Now the call itself.
1239 SDVTList NodeTys = DAG.getVTList(MVT::Other, MVT::Glue);
1240 Chain = DAG.getNode(SPISD::CALL, DL, NodeTys, &Ops[0], Ops.size());
1241 InGlue = Chain.getValue(1);
1243 // Revert the stack pointer immediately after the call.
1244 Chain = DAG.getCALLSEQ_END(Chain, DAG.getIntPtrConstant(ArgsSize, true),
1245 DAG.getIntPtrConstant(0, true), InGlue, DL);
1246 InGlue = Chain.getValue(1);
1248 // Now extract the return values. This is more or less the same as
1249 // LowerFormalArguments_64.
1251 // Assign locations to each value returned by this call.
1252 SmallVector<CCValAssign, 16> RVLocs;
1253 CCState RVInfo(CLI.CallConv, CLI.IsVarArg, DAG.getMachineFunction(),
1254 DAG.getTarget(), RVLocs, *DAG.getContext());
1256 // Set inreg flag manually for codegen generated library calls that
1258 if (CLI.Ins.size() == 1 && CLI.Ins[0].VT == MVT::f32 && CLI.CS == 0)
1259 CLI.Ins[0].Flags.setInReg();
1261 RVInfo.AnalyzeCallResult(CLI.Ins, CC_Sparc64);
1263 // Copy all of the result registers out of their specified physreg.
1264 for (unsigned i = 0; i != RVLocs.size(); ++i) {
1265 CCValAssign &VA = RVLocs[i];
1266 unsigned Reg = toCallerWindow(VA.getLocReg());
1268 // When returning 'inreg {i32, i32 }', two consecutive i32 arguments can
1269 // reside in the same register in the high and low bits. Reuse the
1270 // CopyFromReg previous node to avoid duplicate copies.
1272 if (RegisterSDNode *SrcReg = dyn_cast<RegisterSDNode>(Chain.getOperand(1)))
1273 if (SrcReg->getReg() == Reg && Chain->getOpcode() == ISD::CopyFromReg)
1274 RV = Chain.getValue(0);
1276 // But usually we'll create a new CopyFromReg for a different register.
1277 if (!RV.getNode()) {
1278 RV = DAG.getCopyFromReg(Chain, DL, Reg, RVLocs[i].getLocVT(), InGlue);
1279 Chain = RV.getValue(1);
1280 InGlue = Chain.getValue(2);
1283 // Get the high bits for i32 struct elements.
1284 if (VA.getValVT() == MVT::i32 && VA.needsCustom())
1285 RV = DAG.getNode(ISD::SRL, DL, VA.getLocVT(), RV,
1286 DAG.getConstant(32, MVT::i32));
1288 // The callee promoted the return value, so insert an Assert?ext SDNode so
1289 // we won't promote the value again in this function.
1290 switch (VA.getLocInfo()) {
1291 case CCValAssign::SExt:
1292 RV = DAG.getNode(ISD::AssertSext, DL, VA.getLocVT(), RV,
1293 DAG.getValueType(VA.getValVT()));
1295 case CCValAssign::ZExt:
1296 RV = DAG.getNode(ISD::AssertZext, DL, VA.getLocVT(), RV,
1297 DAG.getValueType(VA.getValVT()));
1303 // Truncate the register down to the return value type.
1304 if (VA.isExtInLoc())
1305 RV = DAG.getNode(ISD::TRUNCATE, DL, VA.getValVT(), RV);
1307 InVals.push_back(RV);
1313 //===----------------------------------------------------------------------===//
1314 // TargetLowering Implementation
1315 //===----------------------------------------------------------------------===//
1317 /// IntCondCCodeToICC - Convert a DAG integer condition code to a SPARC ICC
1319 static SPCC::CondCodes IntCondCCodeToICC(ISD::CondCode CC) {
1321 default: llvm_unreachable("Unknown integer condition code!");
1322 case ISD::SETEQ: return SPCC::ICC_E;
1323 case ISD::SETNE: return SPCC::ICC_NE;
1324 case ISD::SETLT: return SPCC::ICC_L;
1325 case ISD::SETGT: return SPCC::ICC_G;
1326 case ISD::SETLE: return SPCC::ICC_LE;
1327 case ISD::SETGE: return SPCC::ICC_GE;
1328 case ISD::SETULT: return SPCC::ICC_CS;
1329 case ISD::SETULE: return SPCC::ICC_LEU;
1330 case ISD::SETUGT: return SPCC::ICC_GU;
1331 case ISD::SETUGE: return SPCC::ICC_CC;
1335 /// FPCondCCodeToFCC - Convert a DAG floatingp oint condition code to a SPARC
1337 static SPCC::CondCodes FPCondCCodeToFCC(ISD::CondCode CC) {
1339 default: llvm_unreachable("Unknown fp condition code!");
1341 case ISD::SETOEQ: return SPCC::FCC_E;
1343 case ISD::SETUNE: return SPCC::FCC_NE;
1345 case ISD::SETOLT: return SPCC::FCC_L;
1347 case ISD::SETOGT: return SPCC::FCC_G;
1349 case ISD::SETOLE: return SPCC::FCC_LE;
1351 case ISD::SETOGE: return SPCC::FCC_GE;
1352 case ISD::SETULT: return SPCC::FCC_UL;
1353 case ISD::SETULE: return SPCC::FCC_ULE;
1354 case ISD::SETUGT: return SPCC::FCC_UG;
1355 case ISD::SETUGE: return SPCC::FCC_UGE;
1356 case ISD::SETUO: return SPCC::FCC_U;
1357 case ISD::SETO: return SPCC::FCC_O;
1358 case ISD::SETONE: return SPCC::FCC_LG;
1359 case ISD::SETUEQ: return SPCC::FCC_UE;
1363 SparcTargetLowering::SparcTargetLowering(TargetMachine &TM)
1364 : TargetLowering(TM, new TargetLoweringObjectFileELF()) {
1365 Subtarget = &TM.getSubtarget<SparcSubtarget>();
1367 // Set up the register classes.
1368 addRegisterClass(MVT::i32, &SP::IntRegsRegClass);
1369 addRegisterClass(MVT::f32, &SP::FPRegsRegClass);
1370 addRegisterClass(MVT::f64, &SP::DFPRegsRegClass);
1371 addRegisterClass(MVT::f128, &SP::QFPRegsRegClass);
1372 if (Subtarget->is64Bit())
1373 addRegisterClass(MVT::i64, &SP::I64RegsRegClass);
1375 // Turn FP extload into load/fextend
1376 setLoadExtAction(ISD::EXTLOAD, MVT::f32, Expand);
1377 setLoadExtAction(ISD::EXTLOAD, MVT::f64, Expand);
1379 // Sparc doesn't have i1 sign extending load
1380 setLoadExtAction(ISD::SEXTLOAD, MVT::i1, Promote);
1382 // Turn FP truncstore into trunc + store.
1383 setTruncStoreAction(MVT::f64, MVT::f32, Expand);
1384 setTruncStoreAction(MVT::f128, MVT::f32, Expand);
1385 setTruncStoreAction(MVT::f128, MVT::f64, Expand);
1387 // Custom legalize GlobalAddress nodes into LO/HI parts.
1388 setOperationAction(ISD::GlobalAddress, getPointerTy(), Custom);
1389 setOperationAction(ISD::GlobalTLSAddress, getPointerTy(), Custom);
1390 setOperationAction(ISD::ConstantPool, getPointerTy(), Custom);
1391 setOperationAction(ISD::BlockAddress, getPointerTy(), Custom);
1393 // Sparc doesn't have sext_inreg, replace them with shl/sra
1394 setOperationAction(ISD::SIGN_EXTEND_INREG, MVT::i16, Expand);
1395 setOperationAction(ISD::SIGN_EXTEND_INREG, MVT::i8 , Expand);
1396 setOperationAction(ISD::SIGN_EXTEND_INREG, MVT::i1 , Expand);
1398 // Sparc has no REM or DIVREM operations.
1399 setOperationAction(ISD::UREM, MVT::i32, Expand);
1400 setOperationAction(ISD::SREM, MVT::i32, Expand);
1401 setOperationAction(ISD::SDIVREM, MVT::i32, Expand);
1402 setOperationAction(ISD::UDIVREM, MVT::i32, Expand);
1404 // ... nor does SparcV9.
1405 if (Subtarget->is64Bit()) {
1406 setOperationAction(ISD::UREM, MVT::i64, Expand);
1407 setOperationAction(ISD::SREM, MVT::i64, Expand);
1408 setOperationAction(ISD::SDIVREM, MVT::i64, Expand);
1409 setOperationAction(ISD::UDIVREM, MVT::i64, Expand);
1412 // Custom expand fp<->sint
1413 setOperationAction(ISD::FP_TO_SINT, MVT::i32, Custom);
1414 setOperationAction(ISD::SINT_TO_FP, MVT::i32, Custom);
1415 setOperationAction(ISD::FP_TO_SINT, MVT::i64, Custom);
1416 setOperationAction(ISD::SINT_TO_FP, MVT::i64, Custom);
1418 // Custom Expand fp<->uint
1419 setOperationAction(ISD::FP_TO_UINT, MVT::i32, Custom);
1420 setOperationAction(ISD::UINT_TO_FP, MVT::i32, Custom);
1421 setOperationAction(ISD::FP_TO_UINT, MVT::i64, Custom);
1422 setOperationAction(ISD::UINT_TO_FP, MVT::i64, Custom);
1424 setOperationAction(ISD::BITCAST, MVT::f32, Expand);
1425 setOperationAction(ISD::BITCAST, MVT::i32, Expand);
1427 // Sparc has no select or setcc: expand to SELECT_CC.
1428 setOperationAction(ISD::SELECT, MVT::i32, Expand);
1429 setOperationAction(ISD::SELECT, MVT::f32, Expand);
1430 setOperationAction(ISD::SELECT, MVT::f64, Expand);
1431 setOperationAction(ISD::SELECT, MVT::f128, Expand);
1433 setOperationAction(ISD::SETCC, MVT::i32, Expand);
1434 setOperationAction(ISD::SETCC, MVT::f32, Expand);
1435 setOperationAction(ISD::SETCC, MVT::f64, Expand);
1436 setOperationAction(ISD::SETCC, MVT::f128, Expand);
1438 // Sparc doesn't have BRCOND either, it has BR_CC.
1439 setOperationAction(ISD::BRCOND, MVT::Other, Expand);
1440 setOperationAction(ISD::BRIND, MVT::Other, Expand);
1441 setOperationAction(ISD::BR_JT, MVT::Other, Expand);
1442 setOperationAction(ISD::BR_CC, MVT::i32, Custom);
1443 setOperationAction(ISD::BR_CC, MVT::f32, Custom);
1444 setOperationAction(ISD::BR_CC, MVT::f64, Custom);
1445 setOperationAction(ISD::BR_CC, MVT::f128, Custom);
1447 setOperationAction(ISD::SELECT_CC, MVT::i32, Custom);
1448 setOperationAction(ISD::SELECT_CC, MVT::f32, Custom);
1449 setOperationAction(ISD::SELECT_CC, MVT::f64, Custom);
1450 setOperationAction(ISD::SELECT_CC, MVT::f128, Custom);
1452 if (Subtarget->is64Bit()) {
1453 setOperationAction(ISD::ADDC, MVT::i64, Custom);
1454 setOperationAction(ISD::ADDE, MVT::i64, Custom);
1455 setOperationAction(ISD::SUBC, MVT::i64, Custom);
1456 setOperationAction(ISD::SUBE, MVT::i64, Custom);
1457 setOperationAction(ISD::BITCAST, MVT::f64, Expand);
1458 setOperationAction(ISD::BITCAST, MVT::i64, Expand);
1459 setOperationAction(ISD::SELECT, MVT::i64, Expand);
1460 setOperationAction(ISD::SETCC, MVT::i64, Expand);
1461 setOperationAction(ISD::BR_CC, MVT::i64, Custom);
1462 setOperationAction(ISD::SELECT_CC, MVT::i64, Custom);
1464 setOperationAction(ISD::CTPOP, MVT::i64, Legal);
1465 setOperationAction(ISD::CTTZ , MVT::i64, Expand);
1466 setOperationAction(ISD::CTTZ_ZERO_UNDEF, MVT::i64, Expand);
1467 setOperationAction(ISD::CTLZ , MVT::i64, Expand);
1468 setOperationAction(ISD::CTLZ_ZERO_UNDEF, MVT::i64, Expand);
1469 setOperationAction(ISD::BSWAP, MVT::i64, Expand);
1470 setOperationAction(ISD::ROTL , MVT::i64, Expand);
1471 setOperationAction(ISD::ROTR , MVT::i64, Expand);
1472 setOperationAction(ISD::DYNAMIC_STACKALLOC, MVT::i64, Custom);
1475 // FIXME: There are instructions available for ATOMIC_FENCE
1476 // on SparcV8 and later.
1477 setOperationAction(ISD::ATOMIC_FENCE, MVT::Other, Expand);
1479 if (!Subtarget->isV9()) {
1480 // SparcV8 does not have FNEGD and FABSD.
1481 setOperationAction(ISD::FNEG, MVT::f64, Custom);
1482 setOperationAction(ISD::FABS, MVT::f64, Custom);
1485 setOperationAction(ISD::FSIN , MVT::f128, Expand);
1486 setOperationAction(ISD::FCOS , MVT::f128, Expand);
1487 setOperationAction(ISD::FSINCOS, MVT::f128, Expand);
1488 setOperationAction(ISD::FREM , MVT::f128, Expand);
1489 setOperationAction(ISD::FMA , MVT::f128, Expand);
1490 setOperationAction(ISD::FSIN , MVT::f64, Expand);
1491 setOperationAction(ISD::FCOS , MVT::f64, Expand);
1492 setOperationAction(ISD::FSINCOS, MVT::f64, Expand);
1493 setOperationAction(ISD::FREM , MVT::f64, Expand);
1494 setOperationAction(ISD::FMA , MVT::f64, Expand);
1495 setOperationAction(ISD::FSIN , MVT::f32, Expand);
1496 setOperationAction(ISD::FCOS , MVT::f32, Expand);
1497 setOperationAction(ISD::FSINCOS, MVT::f32, Expand);
1498 setOperationAction(ISD::FREM , MVT::f32, Expand);
1499 setOperationAction(ISD::FMA , MVT::f32, Expand);
1500 setOperationAction(ISD::CTPOP, MVT::i32, Expand);
1501 setOperationAction(ISD::CTTZ , MVT::i32, Expand);
1502 setOperationAction(ISD::CTTZ_ZERO_UNDEF, MVT::i32, Expand);
1503 setOperationAction(ISD::CTLZ , MVT::i32, Expand);
1504 setOperationAction(ISD::CTLZ_ZERO_UNDEF, MVT::i32, Expand);
1505 setOperationAction(ISD::ROTL , MVT::i32, Expand);
1506 setOperationAction(ISD::ROTR , MVT::i32, Expand);
1507 setOperationAction(ISD::BSWAP, MVT::i32, Expand);
1508 setOperationAction(ISD::FCOPYSIGN, MVT::f128, Expand);
1509 setOperationAction(ISD::FCOPYSIGN, MVT::f64, Expand);
1510 setOperationAction(ISD::FCOPYSIGN, MVT::f32, Expand);
1511 setOperationAction(ISD::FPOW , MVT::f128, Expand);
1512 setOperationAction(ISD::FPOW , MVT::f64, Expand);
1513 setOperationAction(ISD::FPOW , MVT::f32, Expand);
1515 setOperationAction(ISD::SHL_PARTS, MVT::i32, Expand);
1516 setOperationAction(ISD::SRA_PARTS, MVT::i32, Expand);
1517 setOperationAction(ISD::SRL_PARTS, MVT::i32, Expand);
1519 // FIXME: Sparc provides these multiplies, but we don't have them yet.
1520 setOperationAction(ISD::UMUL_LOHI, MVT::i32, Expand);
1521 setOperationAction(ISD::SMUL_LOHI, MVT::i32, Expand);
1523 if (Subtarget->is64Bit()) {
1524 setOperationAction(ISD::UMUL_LOHI, MVT::i64, Expand);
1525 setOperationAction(ISD::SMUL_LOHI, MVT::i64, Expand);
1526 setOperationAction(ISD::MULHU, MVT::i64, Expand);
1527 setOperationAction(ISD::MULHS, MVT::i64, Expand);
1530 // VASTART needs to be custom lowered to use the VarArgsFrameIndex.
1531 setOperationAction(ISD::VASTART , MVT::Other, Custom);
1532 // VAARG needs to be lowered to not do unaligned accesses for doubles.
1533 setOperationAction(ISD::VAARG , MVT::Other, Custom);
1535 // Use the default implementation.
1536 setOperationAction(ISD::VACOPY , MVT::Other, Expand);
1537 setOperationAction(ISD::VAEND , MVT::Other, Expand);
1538 setOperationAction(ISD::STACKSAVE , MVT::Other, Expand);
1539 setOperationAction(ISD::STACKRESTORE , MVT::Other, Expand);
1540 setOperationAction(ISD::DYNAMIC_STACKALLOC, MVT::i32 , Custom);
1542 setExceptionPointerRegister(SP::I0);
1543 setExceptionSelectorRegister(SP::I1);
1545 setStackPointerRegisterToSaveRestore(SP::O6);
1547 if (Subtarget->isV9())
1548 setOperationAction(ISD::CTPOP, MVT::i32, Legal);
1550 if (Subtarget->isV9() && Subtarget->hasHardQuad()) {
1551 setOperationAction(ISD::LOAD, MVT::f128, Legal);
1552 setOperationAction(ISD::STORE, MVT::f128, Legal);
1554 setOperationAction(ISD::LOAD, MVT::f128, Custom);
1555 setOperationAction(ISD::STORE, MVT::f128, Custom);
1558 if (Subtarget->hasHardQuad()) {
1559 setOperationAction(ISD::FADD, MVT::f128, Legal);
1560 setOperationAction(ISD::FSUB, MVT::f128, Legal);
1561 setOperationAction(ISD::FMUL, MVT::f128, Legal);
1562 setOperationAction(ISD::FDIV, MVT::f128, Legal);
1563 setOperationAction(ISD::FSQRT, MVT::f128, Legal);
1564 setOperationAction(ISD::FP_EXTEND, MVT::f128, Legal);
1565 setOperationAction(ISD::FP_ROUND, MVT::f64, Legal);
1566 if (Subtarget->isV9()) {
1567 setOperationAction(ISD::FNEG, MVT::f128, Legal);
1568 setOperationAction(ISD::FABS, MVT::f128, Legal);
1570 setOperationAction(ISD::FNEG, MVT::f128, Custom);
1571 setOperationAction(ISD::FABS, MVT::f128, Custom);
1574 if (!Subtarget->is64Bit()) {
1575 setLibcallName(RTLIB::FPTOSINT_F128_I64, "_Q_qtoll");
1576 setLibcallName(RTLIB::FPTOUINT_F128_I64, "_Q_qtoull");
1577 setLibcallName(RTLIB::SINTTOFP_I64_F128, "_Q_lltoq");
1578 setLibcallName(RTLIB::UINTTOFP_I64_F128, "_Q_ulltoq");
1582 // Custom legalize f128 operations.
1584 setOperationAction(ISD::FADD, MVT::f128, Custom);
1585 setOperationAction(ISD::FSUB, MVT::f128, Custom);
1586 setOperationAction(ISD::FMUL, MVT::f128, Custom);
1587 setOperationAction(ISD::FDIV, MVT::f128, Custom);
1588 setOperationAction(ISD::FSQRT, MVT::f128, Custom);
1589 setOperationAction(ISD::FNEG, MVT::f128, Custom);
1590 setOperationAction(ISD::FABS, MVT::f128, Custom);
1592 setOperationAction(ISD::FP_EXTEND, MVT::f128, Custom);
1593 setOperationAction(ISD::FP_ROUND, MVT::f64, Custom);
1594 setOperationAction(ISD::FP_ROUND, MVT::f32, Custom);
1596 // Setup Runtime library names.
1597 if (Subtarget->is64Bit()) {
1598 setLibcallName(RTLIB::ADD_F128, "_Qp_add");
1599 setLibcallName(RTLIB::SUB_F128, "_Qp_sub");
1600 setLibcallName(RTLIB::MUL_F128, "_Qp_mul");
1601 setLibcallName(RTLIB::DIV_F128, "_Qp_div");
1602 setLibcallName(RTLIB::SQRT_F128, "_Qp_sqrt");
1603 setLibcallName(RTLIB::FPTOSINT_F128_I32, "_Qp_qtoi");
1604 setLibcallName(RTLIB::FPTOUINT_F128_I32, "_Qp_qtoui");
1605 setLibcallName(RTLIB::SINTTOFP_I32_F128, "_Qp_itoq");
1606 setLibcallName(RTLIB::UINTTOFP_I32_F128, "_Qp_uitoq");
1607 setLibcallName(RTLIB::FPTOSINT_F128_I64, "_Qp_qtox");
1608 setLibcallName(RTLIB::FPTOUINT_F128_I64, "_Qp_qtoux");
1609 setLibcallName(RTLIB::SINTTOFP_I64_F128, "_Qp_xtoq");
1610 setLibcallName(RTLIB::UINTTOFP_I64_F128, "_Qp_uxtoq");
1611 setLibcallName(RTLIB::FPEXT_F32_F128, "_Qp_stoq");
1612 setLibcallName(RTLIB::FPEXT_F64_F128, "_Qp_dtoq");
1613 setLibcallName(RTLIB::FPROUND_F128_F32, "_Qp_qtos");
1614 setLibcallName(RTLIB::FPROUND_F128_F64, "_Qp_qtod");
1616 setLibcallName(RTLIB::ADD_F128, "_Q_add");
1617 setLibcallName(RTLIB::SUB_F128, "_Q_sub");
1618 setLibcallName(RTLIB::MUL_F128, "_Q_mul");
1619 setLibcallName(RTLIB::DIV_F128, "_Q_div");
1620 setLibcallName(RTLIB::SQRT_F128, "_Q_sqrt");
1621 setLibcallName(RTLIB::FPTOSINT_F128_I32, "_Q_qtoi");
1622 setLibcallName(RTLIB::FPTOUINT_F128_I32, "_Q_qtou");
1623 setLibcallName(RTLIB::SINTTOFP_I32_F128, "_Q_itoq");
1624 setLibcallName(RTLIB::UINTTOFP_I32_F128, "_Q_utoq");
1625 setLibcallName(RTLIB::FPTOSINT_F128_I64, "_Q_qtoll");
1626 setLibcallName(RTLIB::FPTOUINT_F128_I64, "_Q_qtoull");
1627 setLibcallName(RTLIB::SINTTOFP_I64_F128, "_Q_lltoq");
1628 setLibcallName(RTLIB::UINTTOFP_I64_F128, "_Q_ulltoq");
1629 setLibcallName(RTLIB::FPEXT_F32_F128, "_Q_stoq");
1630 setLibcallName(RTLIB::FPEXT_F64_F128, "_Q_dtoq");
1631 setLibcallName(RTLIB::FPROUND_F128_F32, "_Q_qtos");
1632 setLibcallName(RTLIB::FPROUND_F128_F64, "_Q_qtod");
1636 setMinFunctionAlignment(2);
1638 computeRegisterProperties();
1641 const char *SparcTargetLowering::getTargetNodeName(unsigned Opcode) const {
1644 case SPISD::CMPICC: return "SPISD::CMPICC";
1645 case SPISD::CMPFCC: return "SPISD::CMPFCC";
1646 case SPISD::BRICC: return "SPISD::BRICC";
1647 case SPISD::BRXCC: return "SPISD::BRXCC";
1648 case SPISD::BRFCC: return "SPISD::BRFCC";
1649 case SPISD::SELECT_ICC: return "SPISD::SELECT_ICC";
1650 case SPISD::SELECT_XCC: return "SPISD::SELECT_XCC";
1651 case SPISD::SELECT_FCC: return "SPISD::SELECT_FCC";
1652 case SPISD::Hi: return "SPISD::Hi";
1653 case SPISD::Lo: return "SPISD::Lo";
1654 case SPISD::FTOI: return "SPISD::FTOI";
1655 case SPISD::ITOF: return "SPISD::ITOF";
1656 case SPISD::FTOX: return "SPISD::FTOX";
1657 case SPISD::XTOF: return "SPISD::XTOF";
1658 case SPISD::CALL: return "SPISD::CALL";
1659 case SPISD::RET_FLAG: return "SPISD::RET_FLAG";
1660 case SPISD::GLOBAL_BASE_REG: return "SPISD::GLOBAL_BASE_REG";
1661 case SPISD::FLUSHW: return "SPISD::FLUSHW";
1662 case SPISD::TLS_ADD: return "SPISD::TLS_ADD";
1663 case SPISD::TLS_LD: return "SPISD::TLS_LD";
1664 case SPISD::TLS_CALL: return "SPISD::TLS_CALL";
1668 EVT SparcTargetLowering::getSetCCResultType(LLVMContext &, EVT VT) const {
1671 return VT.changeVectorElementTypeToInteger();
1674 /// isMaskedValueZeroForTargetNode - Return true if 'Op & Mask' is known to
1675 /// be zero. Op is expected to be a target specific node. Used by DAG
1677 void SparcTargetLowering::computeMaskedBitsForTargetNode
1681 const SelectionDAG &DAG,
1682 unsigned Depth) const {
1683 APInt KnownZero2, KnownOne2;
1684 KnownZero = KnownOne = APInt(KnownZero.getBitWidth(), 0);
1686 switch (Op.getOpcode()) {
1688 case SPISD::SELECT_ICC:
1689 case SPISD::SELECT_XCC:
1690 case SPISD::SELECT_FCC:
1691 DAG.ComputeMaskedBits(Op.getOperand(1), KnownZero, KnownOne, Depth+1);
1692 DAG.ComputeMaskedBits(Op.getOperand(0), KnownZero2, KnownOne2, Depth+1);
1693 assert((KnownZero & KnownOne) == 0 && "Bits known to be one AND zero?");
1694 assert((KnownZero2 & KnownOne2) == 0 && "Bits known to be one AND zero?");
1696 // Only known if known in both the LHS and RHS.
1697 KnownOne &= KnownOne2;
1698 KnownZero &= KnownZero2;
1703 // Look at LHS/RHS/CC and see if they are a lowered setcc instruction. If so
1704 // set LHS/RHS and SPCC to the LHS/RHS of the setcc and SPCC to the condition.
1705 static void LookThroughSetCC(SDValue &LHS, SDValue &RHS,
1706 ISD::CondCode CC, unsigned &SPCC) {
1707 if (isa<ConstantSDNode>(RHS) &&
1708 cast<ConstantSDNode>(RHS)->isNullValue() &&
1710 (((LHS.getOpcode() == SPISD::SELECT_ICC ||
1711 LHS.getOpcode() == SPISD::SELECT_XCC) &&
1712 LHS.getOperand(3).getOpcode() == SPISD::CMPICC) ||
1713 (LHS.getOpcode() == SPISD::SELECT_FCC &&
1714 LHS.getOperand(3).getOpcode() == SPISD::CMPFCC)) &&
1715 isa<ConstantSDNode>(LHS.getOperand(0)) &&
1716 isa<ConstantSDNode>(LHS.getOperand(1)) &&
1717 cast<ConstantSDNode>(LHS.getOperand(0))->isOne() &&
1718 cast<ConstantSDNode>(LHS.getOperand(1))->isNullValue()) {
1719 SDValue CMPCC = LHS.getOperand(3);
1720 SPCC = cast<ConstantSDNode>(LHS.getOperand(2))->getZExtValue();
1721 LHS = CMPCC.getOperand(0);
1722 RHS = CMPCC.getOperand(1);
1726 // Convert to a target node and set target flags.
1727 SDValue SparcTargetLowering::withTargetFlags(SDValue Op, unsigned TF,
1728 SelectionDAG &DAG) const {
1729 if (const GlobalAddressSDNode *GA = dyn_cast<GlobalAddressSDNode>(Op))
1730 return DAG.getTargetGlobalAddress(GA->getGlobal(),
1732 GA->getValueType(0),
1733 GA->getOffset(), TF);
1735 if (const ConstantPoolSDNode *CP = dyn_cast<ConstantPoolSDNode>(Op))
1736 return DAG.getTargetConstantPool(CP->getConstVal(),
1737 CP->getValueType(0),
1739 CP->getOffset(), TF);
1741 if (const BlockAddressSDNode *BA = dyn_cast<BlockAddressSDNode>(Op))
1742 return DAG.getTargetBlockAddress(BA->getBlockAddress(),
1747 if (const ExternalSymbolSDNode *ES = dyn_cast<ExternalSymbolSDNode>(Op))
1748 return DAG.getTargetExternalSymbol(ES->getSymbol(),
1749 ES->getValueType(0), TF);
1751 llvm_unreachable("Unhandled address SDNode");
1754 // Split Op into high and low parts according to HiTF and LoTF.
1755 // Return an ADD node combining the parts.
1756 SDValue SparcTargetLowering::makeHiLoPair(SDValue Op,
1757 unsigned HiTF, unsigned LoTF,
1758 SelectionDAG &DAG) const {
1760 EVT VT = Op.getValueType();
1761 SDValue Hi = DAG.getNode(SPISD::Hi, DL, VT, withTargetFlags(Op, HiTF, DAG));
1762 SDValue Lo = DAG.getNode(SPISD::Lo, DL, VT, withTargetFlags(Op, LoTF, DAG));
1763 return DAG.getNode(ISD::ADD, DL, VT, Hi, Lo);
1766 // Build SDNodes for producing an address from a GlobalAddress, ConstantPool,
1767 // or ExternalSymbol SDNode.
1768 SDValue SparcTargetLowering::makeAddress(SDValue Op, SelectionDAG &DAG) const {
1770 EVT VT = getPointerTy();
1772 // Handle PIC mode first.
1773 if (getTargetMachine().getRelocationModel() == Reloc::PIC_) {
1774 // This is the pic32 code model, the GOT is known to be smaller than 4GB.
1775 SDValue HiLo = makeHiLoPair(Op, SPII::MO_HI, SPII::MO_LO, DAG);
1776 SDValue GlobalBase = DAG.getNode(SPISD::GLOBAL_BASE_REG, DL, VT);
1777 SDValue AbsAddr = DAG.getNode(ISD::ADD, DL, VT, GlobalBase, HiLo);
1778 // GLOBAL_BASE_REG codegen'ed with call. Inform MFI that this
1779 // function has calls.
1780 MachineFrameInfo *MFI = DAG.getMachineFunction().getFrameInfo();
1781 MFI->setHasCalls(true);
1782 return DAG.getLoad(VT, DL, DAG.getEntryNode(), AbsAddr,
1783 MachinePointerInfo::getGOT(), false, false, false, 0);
1786 // This is one of the absolute code models.
1787 switch(getTargetMachine().getCodeModel()) {
1789 llvm_unreachable("Unsupported absolute code model");
1790 case CodeModel::JITDefault:
1791 case CodeModel::Small:
1793 return makeHiLoPair(Op, SPII::MO_HI, SPII::MO_LO, DAG);
1794 case CodeModel::Medium: {
1796 SDValue H44 = makeHiLoPair(Op, SPII::MO_H44, SPII::MO_M44, DAG);
1797 H44 = DAG.getNode(ISD::SHL, DL, VT, H44, DAG.getConstant(12, MVT::i32));
1798 SDValue L44 = withTargetFlags(Op, SPII::MO_L44, DAG);
1799 L44 = DAG.getNode(SPISD::Lo, DL, VT, L44);
1800 return DAG.getNode(ISD::ADD, DL, VT, H44, L44);
1802 case CodeModel::Large: {
1804 SDValue Hi = makeHiLoPair(Op, SPII::MO_HH, SPII::MO_HM, DAG);
1805 Hi = DAG.getNode(ISD::SHL, DL, VT, Hi, DAG.getConstant(32, MVT::i32));
1806 SDValue Lo = makeHiLoPair(Op, SPII::MO_HI, SPII::MO_LO, DAG);
1807 return DAG.getNode(ISD::ADD, DL, VT, Hi, Lo);
1812 SDValue SparcTargetLowering::LowerGlobalAddress(SDValue Op,
1813 SelectionDAG &DAG) const {
1814 return makeAddress(Op, DAG);
1817 SDValue SparcTargetLowering::LowerConstantPool(SDValue Op,
1818 SelectionDAG &DAG) const {
1819 return makeAddress(Op, DAG);
1822 SDValue SparcTargetLowering::LowerBlockAddress(SDValue Op,
1823 SelectionDAG &DAG) const {
1824 return makeAddress(Op, DAG);
1827 SDValue SparcTargetLowering::LowerGlobalTLSAddress(SDValue Op,
1828 SelectionDAG &DAG) const {
1830 GlobalAddressSDNode *GA = cast<GlobalAddressSDNode>(Op);
1832 const GlobalValue *GV = GA->getGlobal();
1833 EVT PtrVT = getPointerTy();
1835 TLSModel::Model model = getTargetMachine().getTLSModel(GV);
1837 if (model == TLSModel::GeneralDynamic || model == TLSModel::LocalDynamic) {
1838 unsigned HiTF = ((model == TLSModel::GeneralDynamic)? SPII::MO_TLS_GD_HI22
1839 : SPII::MO_TLS_LDM_HI22);
1840 unsigned LoTF = ((model == TLSModel::GeneralDynamic)? SPII::MO_TLS_GD_LO10
1841 : SPII::MO_TLS_LDM_LO10);
1842 unsigned addTF = ((model == TLSModel::GeneralDynamic)? SPII::MO_TLS_GD_ADD
1843 : SPII::MO_TLS_LDM_ADD);
1844 unsigned callTF = ((model == TLSModel::GeneralDynamic)? SPII::MO_TLS_GD_CALL
1845 : SPII::MO_TLS_LDM_CALL);
1847 SDValue HiLo = makeHiLoPair(Op, HiTF, LoTF, DAG);
1848 SDValue Base = DAG.getNode(SPISD::GLOBAL_BASE_REG, DL, PtrVT);
1849 SDValue Argument = DAG.getNode(SPISD::TLS_ADD, DL, PtrVT, Base, HiLo,
1850 withTargetFlags(Op, addTF, DAG));
1852 SDValue Chain = DAG.getEntryNode();
1855 Chain = DAG.getCALLSEQ_START(Chain, DAG.getIntPtrConstant(1, true), DL);
1856 Chain = DAG.getCopyToReg(Chain, DL, SP::O0, Argument, InFlag);
1857 InFlag = Chain.getValue(1);
1858 SDValue Callee = DAG.getTargetExternalSymbol("__tls_get_addr", PtrVT);
1859 SDValue Symbol = withTargetFlags(Op, callTF, DAG);
1861 SDVTList NodeTys = DAG.getVTList(MVT::Other, MVT::Glue);
1862 SmallVector<SDValue, 4> Ops;
1863 Ops.push_back(Chain);
1864 Ops.push_back(Callee);
1865 Ops.push_back(Symbol);
1866 Ops.push_back(DAG.getRegister(SP::O0, PtrVT));
1867 const uint32_t *Mask = getTargetMachine()
1868 .getRegisterInfo()->getCallPreservedMask(CallingConv::C);
1869 assert(Mask && "Missing call preserved mask for calling convention");
1870 Ops.push_back(DAG.getRegisterMask(Mask));
1871 Ops.push_back(InFlag);
1872 Chain = DAG.getNode(SPISD::TLS_CALL, DL, NodeTys, &Ops[0], Ops.size());
1873 InFlag = Chain.getValue(1);
1874 Chain = DAG.getCALLSEQ_END(Chain, DAG.getIntPtrConstant(1, true),
1875 DAG.getIntPtrConstant(0, true), InFlag, DL);
1876 InFlag = Chain.getValue(1);
1877 SDValue Ret = DAG.getCopyFromReg(Chain, DL, SP::O0, PtrVT, InFlag);
1879 if (model != TLSModel::LocalDynamic)
1882 SDValue Hi = DAG.getNode(SPISD::Hi, DL, PtrVT,
1883 withTargetFlags(Op, SPII::MO_TLS_LDO_HIX22, DAG));
1884 SDValue Lo = DAG.getNode(SPISD::Lo, DL, PtrVT,
1885 withTargetFlags(Op, SPII::MO_TLS_LDO_LOX10, DAG));
1886 HiLo = DAG.getNode(ISD::XOR, DL, PtrVT, Hi, Lo);
1887 return DAG.getNode(SPISD::TLS_ADD, DL, PtrVT, Ret, HiLo,
1888 withTargetFlags(Op, SPII::MO_TLS_LDO_ADD, DAG));
1891 if (model == TLSModel::InitialExec) {
1892 unsigned ldTF = ((PtrVT == MVT::i64)? SPII::MO_TLS_IE_LDX
1893 : SPII::MO_TLS_IE_LD);
1895 SDValue Base = DAG.getNode(SPISD::GLOBAL_BASE_REG, DL, PtrVT);
1897 // GLOBAL_BASE_REG codegen'ed with call. Inform MFI that this
1898 // function has calls.
1899 MachineFrameInfo *MFI = DAG.getMachineFunction().getFrameInfo();
1900 MFI->setHasCalls(true);
1902 SDValue TGA = makeHiLoPair(Op,
1903 SPII::MO_TLS_IE_HI22, SPII::MO_TLS_IE_LO10, DAG);
1904 SDValue Ptr = DAG.getNode(ISD::ADD, DL, PtrVT, Base, TGA);
1905 SDValue Offset = DAG.getNode(SPISD::TLS_LD,
1907 withTargetFlags(Op, ldTF, DAG));
1908 return DAG.getNode(SPISD::TLS_ADD, DL, PtrVT,
1909 DAG.getRegister(SP::G7, PtrVT), Offset,
1910 withTargetFlags(Op, SPII::MO_TLS_IE_ADD, DAG));
1913 assert(model == TLSModel::LocalExec);
1914 SDValue Hi = DAG.getNode(SPISD::Hi, DL, PtrVT,
1915 withTargetFlags(Op, SPII::MO_TLS_LE_HIX22, DAG));
1916 SDValue Lo = DAG.getNode(SPISD::Lo, DL, PtrVT,
1917 withTargetFlags(Op, SPII::MO_TLS_LE_LOX10, DAG));
1918 SDValue Offset = DAG.getNode(ISD::XOR, DL, PtrVT, Hi, Lo);
1920 return DAG.getNode(ISD::ADD, DL, PtrVT,
1921 DAG.getRegister(SP::G7, PtrVT), Offset);
1925 SparcTargetLowering::LowerF128_LibCallArg(SDValue Chain, ArgListTy &Args,
1926 SDValue Arg, SDLoc DL,
1927 SelectionDAG &DAG) const {
1928 MachineFrameInfo *MFI = DAG.getMachineFunction().getFrameInfo();
1929 EVT ArgVT = Arg.getValueType();
1930 Type *ArgTy = ArgVT.getTypeForEVT(*DAG.getContext());
1936 if (ArgTy->isFP128Ty()) {
1937 // Create a stack object and pass the pointer to the library function.
1938 int FI = MFI->CreateStackObject(16, 8, false);
1939 SDValue FIPtr = DAG.getFrameIndex(FI, getPointerTy());
1940 Chain = DAG.getStore(Chain,
1944 MachinePointerInfo(),
1950 Entry.Ty = PointerType::getUnqual(ArgTy);
1952 Args.push_back(Entry);
1957 SparcTargetLowering::LowerF128Op(SDValue Op, SelectionDAG &DAG,
1958 const char *LibFuncName,
1959 unsigned numArgs) const {
1963 MachineFrameInfo *MFI = DAG.getMachineFunction().getFrameInfo();
1965 SDValue Callee = DAG.getExternalSymbol(LibFuncName, getPointerTy());
1966 Type *RetTy = Op.getValueType().getTypeForEVT(*DAG.getContext());
1967 Type *RetTyABI = RetTy;
1968 SDValue Chain = DAG.getEntryNode();
1971 if (RetTy->isFP128Ty()) {
1972 // Create a Stack Object to receive the return value of type f128.
1974 int RetFI = MFI->CreateStackObject(16, 8, false);
1975 RetPtr = DAG.getFrameIndex(RetFI, getPointerTy());
1976 Entry.Node = RetPtr;
1977 Entry.Ty = PointerType::getUnqual(RetTy);
1978 if (!Subtarget->is64Bit())
1979 Entry.isSRet = true;
1980 Entry.isReturned = false;
1981 Args.push_back(Entry);
1982 RetTyABI = Type::getVoidTy(*DAG.getContext());
1985 assert(Op->getNumOperands() >= numArgs && "Not enough operands!");
1986 for (unsigned i = 0, e = numArgs; i != e; ++i) {
1987 Chain = LowerF128_LibCallArg(Chain, Args, Op.getOperand(i), SDLoc(Op), DAG);
1990 CallLoweringInfo CLI(Chain,
1992 false, false, false, false,
1995 Callee, Args, DAG, SDLoc(Op));
1996 std::pair<SDValue, SDValue> CallInfo = LowerCallTo(CLI);
1998 // chain is in second result.
1999 if (RetTyABI == RetTy)
2000 return CallInfo.first;
2002 assert (RetTy->isFP128Ty() && "Unexpected return type!");
2004 Chain = CallInfo.second;
2006 // Load RetPtr to get the return value.
2007 return DAG.getLoad(Op.getValueType(),
2011 MachinePointerInfo(),
2012 false, false, false, 8);
2016 SparcTargetLowering::LowerF128Compare(SDValue LHS, SDValue RHS,
2019 SelectionDAG &DAG) const {
2021 const char *LibCall = 0;
2022 bool is64Bit = Subtarget->is64Bit();
2024 default: llvm_unreachable("Unhandled conditional code!");
2025 case SPCC::FCC_E : LibCall = is64Bit? "_Qp_feq" : "_Q_feq"; break;
2026 case SPCC::FCC_NE : LibCall = is64Bit? "_Qp_fne" : "_Q_fne"; break;
2027 case SPCC::FCC_L : LibCall = is64Bit? "_Qp_flt" : "_Q_flt"; break;
2028 case SPCC::FCC_G : LibCall = is64Bit? "_Qp_fgt" : "_Q_fgt"; break;
2029 case SPCC::FCC_LE : LibCall = is64Bit? "_Qp_fle" : "_Q_fle"; break;
2030 case SPCC::FCC_GE : LibCall = is64Bit? "_Qp_fge" : "_Q_fge"; break;
2038 case SPCC::FCC_UE : LibCall = is64Bit? "_Qp_cmp" : "_Q_cmp"; break;
2041 SDValue Callee = DAG.getExternalSymbol(LibCall, getPointerTy());
2042 Type *RetTy = Type::getInt32Ty(*DAG.getContext());
2044 SDValue Chain = DAG.getEntryNode();
2045 Chain = LowerF128_LibCallArg(Chain, Args, LHS, DL, DAG);
2046 Chain = LowerF128_LibCallArg(Chain, Args, RHS, DL, DAG);
2049 CallLoweringInfo CLI(Chain,
2051 false, false, false, false,
2054 Callee, Args, DAG, DL);
2056 std::pair<SDValue, SDValue> CallInfo = LowerCallTo(CLI);
2058 // result is in first, and chain is in second result.
2059 SDValue Result = CallInfo.first;
2063 SDValue RHS = DAG.getTargetConstant(0, Result.getValueType());
2064 SPCC = SPCC::ICC_NE;
2065 return DAG.getNode(SPISD::CMPICC, DL, MVT::Glue, Result, RHS);
2067 case SPCC::FCC_UL : {
2068 SDValue Mask = DAG.getTargetConstant(1, Result.getValueType());
2069 Result = DAG.getNode(ISD::AND, DL, Result.getValueType(), Result, Mask);
2070 SDValue RHS = DAG.getTargetConstant(0, Result.getValueType());
2071 SPCC = SPCC::ICC_NE;
2072 return DAG.getNode(SPISD::CMPICC, DL, MVT::Glue, Result, RHS);
2074 case SPCC::FCC_ULE: {
2075 SDValue RHS = DAG.getTargetConstant(2, Result.getValueType());
2076 SPCC = SPCC::ICC_NE;
2077 return DAG.getNode(SPISD::CMPICC, DL, MVT::Glue, Result, RHS);
2079 case SPCC::FCC_UG : {
2080 SDValue RHS = DAG.getTargetConstant(1, Result.getValueType());
2082 return DAG.getNode(SPISD::CMPICC, DL, MVT::Glue, Result, RHS);
2084 case SPCC::FCC_UGE: {
2085 SDValue RHS = DAG.getTargetConstant(1, Result.getValueType());
2086 SPCC = SPCC::ICC_NE;
2087 return DAG.getNode(SPISD::CMPICC, DL, MVT::Glue, Result, RHS);
2090 case SPCC::FCC_U : {
2091 SDValue RHS = DAG.getTargetConstant(3, Result.getValueType());
2093 return DAG.getNode(SPISD::CMPICC, DL, MVT::Glue, Result, RHS);
2095 case SPCC::FCC_O : {
2096 SDValue RHS = DAG.getTargetConstant(3, Result.getValueType());
2097 SPCC = SPCC::ICC_NE;
2098 return DAG.getNode(SPISD::CMPICC, DL, MVT::Glue, Result, RHS);
2100 case SPCC::FCC_LG : {
2101 SDValue Mask = DAG.getTargetConstant(3, Result.getValueType());
2102 Result = DAG.getNode(ISD::AND, DL, Result.getValueType(), Result, Mask);
2103 SDValue RHS = DAG.getTargetConstant(0, Result.getValueType());
2104 SPCC = SPCC::ICC_NE;
2105 return DAG.getNode(SPISD::CMPICC, DL, MVT::Glue, Result, RHS);
2107 case SPCC::FCC_UE : {
2108 SDValue Mask = DAG.getTargetConstant(3, Result.getValueType());
2109 Result = DAG.getNode(ISD::AND, DL, Result.getValueType(), Result, Mask);
2110 SDValue RHS = DAG.getTargetConstant(0, Result.getValueType());
2112 return DAG.getNode(SPISD::CMPICC, DL, MVT::Glue, Result, RHS);
2118 LowerF128_FPEXTEND(SDValue Op, SelectionDAG &DAG,
2119 const SparcTargetLowering &TLI) {
2121 if (Op.getOperand(0).getValueType() == MVT::f64)
2122 return TLI.LowerF128Op(Op, DAG,
2123 TLI.getLibcallName(RTLIB::FPEXT_F64_F128), 1);
2125 if (Op.getOperand(0).getValueType() == MVT::f32)
2126 return TLI.LowerF128Op(Op, DAG,
2127 TLI.getLibcallName(RTLIB::FPEXT_F32_F128), 1);
2129 llvm_unreachable("fpextend with non-float operand!");
2130 return SDValue(0, 0);
2134 LowerF128_FPROUND(SDValue Op, SelectionDAG &DAG,
2135 const SparcTargetLowering &TLI) {
2136 // FP_ROUND on f64 and f32 are legal.
2137 if (Op.getOperand(0).getValueType() != MVT::f128)
2140 if (Op.getValueType() == MVT::f64)
2141 return TLI.LowerF128Op(Op, DAG,
2142 TLI.getLibcallName(RTLIB::FPROUND_F128_F64), 1);
2143 if (Op.getValueType() == MVT::f32)
2144 return TLI.LowerF128Op(Op, DAG,
2145 TLI.getLibcallName(RTLIB::FPROUND_F128_F32), 1);
2147 llvm_unreachable("fpround to non-float!");
2148 return SDValue(0, 0);
2151 static SDValue LowerFP_TO_SINT(SDValue Op, SelectionDAG &DAG,
2152 const SparcTargetLowering &TLI,
2155 EVT VT = Op.getValueType();
2156 assert(VT == MVT::i32 || VT == MVT::i64);
2158 // Expand f128 operations to fp128 abi calls.
2159 if (Op.getOperand(0).getValueType() == MVT::f128
2160 && (!hasHardQuad || !TLI.isTypeLegal(VT))) {
2161 const char *libName = TLI.getLibcallName(VT == MVT::i32
2162 ? RTLIB::FPTOSINT_F128_I32
2163 : RTLIB::FPTOSINT_F128_I64);
2164 return TLI.LowerF128Op(Op, DAG, libName, 1);
2167 // Expand if the resulting type is illegal.
2168 if (!TLI.isTypeLegal(VT))
2169 return SDValue(0, 0);
2171 // Otherwise, Convert the fp value to integer in an FP register.
2173 Op = DAG.getNode(SPISD::FTOI, dl, MVT::f32, Op.getOperand(0));
2175 Op = DAG.getNode(SPISD::FTOX, dl, MVT::f64, Op.getOperand(0));
2177 return DAG.getNode(ISD::BITCAST, dl, VT, Op);
2180 static SDValue LowerSINT_TO_FP(SDValue Op, SelectionDAG &DAG,
2181 const SparcTargetLowering &TLI,
2184 EVT OpVT = Op.getOperand(0).getValueType();
2185 assert(OpVT == MVT::i32 || (OpVT == MVT::i64));
2187 EVT floatVT = (OpVT == MVT::i32) ? MVT::f32 : MVT::f64;
2189 // Expand f128 operations to fp128 ABI calls.
2190 if (Op.getValueType() == MVT::f128
2191 && (!hasHardQuad || !TLI.isTypeLegal(OpVT))) {
2192 const char *libName = TLI.getLibcallName(OpVT == MVT::i32
2193 ? RTLIB::SINTTOFP_I32_F128
2194 : RTLIB::SINTTOFP_I64_F128);
2195 return TLI.LowerF128Op(Op, DAG, libName, 1);
2198 // Expand if the operand type is illegal.
2199 if (!TLI.isTypeLegal(OpVT))
2200 return SDValue(0, 0);
2202 // Otherwise, Convert the int value to FP in an FP register.
2203 SDValue Tmp = DAG.getNode(ISD::BITCAST, dl, floatVT, Op.getOperand(0));
2204 unsigned opcode = (OpVT == MVT::i32)? SPISD::ITOF : SPISD::XTOF;
2205 return DAG.getNode(opcode, dl, Op.getValueType(), Tmp);
2208 static SDValue LowerFP_TO_UINT(SDValue Op, SelectionDAG &DAG,
2209 const SparcTargetLowering &TLI,
2212 EVT VT = Op.getValueType();
2214 // Expand if it does not involve f128 or the target has support for
2215 // quad floating point instructions and the resulting type is legal.
2216 if (Op.getOperand(0).getValueType() != MVT::f128 ||
2217 (hasHardQuad && TLI.isTypeLegal(VT)))
2218 return SDValue(0, 0);
2220 assert(VT == MVT::i32 || VT == MVT::i64);
2222 return TLI.LowerF128Op(Op, DAG,
2223 TLI.getLibcallName(VT == MVT::i32
2224 ? RTLIB::FPTOUINT_F128_I32
2225 : RTLIB::FPTOUINT_F128_I64),
2229 static SDValue LowerUINT_TO_FP(SDValue Op, SelectionDAG &DAG,
2230 const SparcTargetLowering &TLI,
2233 EVT OpVT = Op.getOperand(0).getValueType();
2234 assert(OpVT == MVT::i32 || OpVT == MVT::i64);
2236 // Expand if it does not involve f128 or the target has support for
2237 // quad floating point instructions and the operand type is legal.
2238 if (Op.getValueType() != MVT::f128 || (hasHardQuad && TLI.isTypeLegal(OpVT)))
2239 return SDValue(0, 0);
2241 return TLI.LowerF128Op(Op, DAG,
2242 TLI.getLibcallName(OpVT == MVT::i32
2243 ? RTLIB::UINTTOFP_I32_F128
2244 : RTLIB::UINTTOFP_I64_F128),
2248 static SDValue LowerBR_CC(SDValue Op, SelectionDAG &DAG,
2249 const SparcTargetLowering &TLI,
2251 SDValue Chain = Op.getOperand(0);
2252 ISD::CondCode CC = cast<CondCodeSDNode>(Op.getOperand(1))->get();
2253 SDValue LHS = Op.getOperand(2);
2254 SDValue RHS = Op.getOperand(3);
2255 SDValue Dest = Op.getOperand(4);
2257 unsigned Opc, SPCC = ~0U;
2259 // If this is a br_cc of a "setcc", and if the setcc got lowered into
2260 // an CMP[IF]CC/SELECT_[IF]CC pair, find the original compared values.
2261 LookThroughSetCC(LHS, RHS, CC, SPCC);
2263 // Get the condition flag.
2264 SDValue CompareFlag;
2265 if (LHS.getValueType().isInteger()) {
2266 CompareFlag = DAG.getNode(SPISD::CMPICC, dl, MVT::Glue, LHS, RHS);
2267 if (SPCC == ~0U) SPCC = IntCondCCodeToICC(CC);
2268 // 32-bit compares use the icc flags, 64-bit uses the xcc flags.
2269 Opc = LHS.getValueType() == MVT::i32 ? SPISD::BRICC : SPISD::BRXCC;
2271 if (!hasHardQuad && LHS.getValueType() == MVT::f128) {
2272 if (SPCC == ~0U) SPCC = FPCondCCodeToFCC(CC);
2273 CompareFlag = TLI.LowerF128Compare(LHS, RHS, SPCC, dl, DAG);
2276 CompareFlag = DAG.getNode(SPISD::CMPFCC, dl, MVT::Glue, LHS, RHS);
2277 if (SPCC == ~0U) SPCC = FPCondCCodeToFCC(CC);
2281 return DAG.getNode(Opc, dl, MVT::Other, Chain, Dest,
2282 DAG.getConstant(SPCC, MVT::i32), CompareFlag);
2285 static SDValue LowerSELECT_CC(SDValue Op, SelectionDAG &DAG,
2286 const SparcTargetLowering &TLI,
2288 SDValue LHS = Op.getOperand(0);
2289 SDValue RHS = Op.getOperand(1);
2290 ISD::CondCode CC = cast<CondCodeSDNode>(Op.getOperand(4))->get();
2291 SDValue TrueVal = Op.getOperand(2);
2292 SDValue FalseVal = Op.getOperand(3);
2294 unsigned Opc, SPCC = ~0U;
2296 // If this is a select_cc of a "setcc", and if the setcc got lowered into
2297 // an CMP[IF]CC/SELECT_[IF]CC pair, find the original compared values.
2298 LookThroughSetCC(LHS, RHS, CC, SPCC);
2300 SDValue CompareFlag;
2301 if (LHS.getValueType().isInteger()) {
2302 CompareFlag = DAG.getNode(SPISD::CMPICC, dl, MVT::Glue, LHS, RHS);
2303 Opc = LHS.getValueType() == MVT::i32 ?
2304 SPISD::SELECT_ICC : SPISD::SELECT_XCC;
2305 if (SPCC == ~0U) SPCC = IntCondCCodeToICC(CC);
2307 if (!hasHardQuad && LHS.getValueType() == MVT::f128) {
2308 if (SPCC == ~0U) SPCC = FPCondCCodeToFCC(CC);
2309 CompareFlag = TLI.LowerF128Compare(LHS, RHS, SPCC, dl, DAG);
2310 Opc = SPISD::SELECT_ICC;
2312 CompareFlag = DAG.getNode(SPISD::CMPFCC, dl, MVT::Glue, LHS, RHS);
2313 Opc = SPISD::SELECT_FCC;
2314 if (SPCC == ~0U) SPCC = FPCondCCodeToFCC(CC);
2317 return DAG.getNode(Opc, dl, TrueVal.getValueType(), TrueVal, FalseVal,
2318 DAG.getConstant(SPCC, MVT::i32), CompareFlag);
2321 static SDValue LowerVASTART(SDValue Op, SelectionDAG &DAG,
2322 const SparcTargetLowering &TLI) {
2323 MachineFunction &MF = DAG.getMachineFunction();
2324 SparcMachineFunctionInfo *FuncInfo = MF.getInfo<SparcMachineFunctionInfo>();
2326 // Need frame address to find the address of VarArgsFrameIndex.
2327 MF.getFrameInfo()->setFrameAddressIsTaken(true);
2329 // vastart just stores the address of the VarArgsFrameIndex slot into the
2330 // memory location argument.
2333 DAG.getNode(ISD::ADD, DL, TLI.getPointerTy(),
2334 DAG.getRegister(SP::I6, TLI.getPointerTy()),
2335 DAG.getIntPtrConstant(FuncInfo->getVarArgsFrameOffset()));
2336 const Value *SV = cast<SrcValueSDNode>(Op.getOperand(2))->getValue();
2337 return DAG.getStore(Op.getOperand(0), DL, Offset, Op.getOperand(1),
2338 MachinePointerInfo(SV), false, false, 0);
2341 static SDValue LowerVAARG(SDValue Op, SelectionDAG &DAG) {
2342 SDNode *Node = Op.getNode();
2343 EVT VT = Node->getValueType(0);
2344 SDValue InChain = Node->getOperand(0);
2345 SDValue VAListPtr = Node->getOperand(1);
2346 EVT PtrVT = VAListPtr.getValueType();
2347 const Value *SV = cast<SrcValueSDNode>(Node->getOperand(2))->getValue();
2349 SDValue VAList = DAG.getLoad(PtrVT, DL, InChain, VAListPtr,
2350 MachinePointerInfo(SV), false, false, false, 0);
2351 // Increment the pointer, VAList, to the next vaarg.
2352 SDValue NextPtr = DAG.getNode(ISD::ADD, DL, PtrVT, VAList,
2353 DAG.getIntPtrConstant(VT.getSizeInBits()/8));
2354 // Store the incremented VAList to the legalized pointer.
2355 InChain = DAG.getStore(VAList.getValue(1), DL, NextPtr,
2356 VAListPtr, MachinePointerInfo(SV), false, false, 0);
2357 // Load the actual argument out of the pointer VAList.
2358 // We can't count on greater alignment than the word size.
2359 return DAG.getLoad(VT, DL, InChain, VAList, MachinePointerInfo(),
2360 false, false, false,
2361 std::min(PtrVT.getSizeInBits(), VT.getSizeInBits())/8);
2364 static SDValue LowerDYNAMIC_STACKALLOC(SDValue Op, SelectionDAG &DAG,
2365 const SparcSubtarget *Subtarget) {
2366 SDValue Chain = Op.getOperand(0); // Legalize the chain.
2367 SDValue Size = Op.getOperand(1); // Legalize the size.
2368 EVT VT = Size->getValueType(0);
2371 unsigned SPReg = SP::O6;
2372 SDValue SP = DAG.getCopyFromReg(Chain, dl, SPReg, VT);
2373 SDValue NewSP = DAG.getNode(ISD::SUB, dl, VT, SP, Size); // Value
2374 Chain = DAG.getCopyToReg(SP.getValue(1), dl, SPReg, NewSP); // Output chain
2376 // The resultant pointer is actually 16 words from the bottom of the stack,
2377 // to provide a register spill area.
2378 unsigned regSpillArea = Subtarget->is64Bit() ? 128 : 96;
2379 regSpillArea += Subtarget->getStackPointerBias();
2381 SDValue NewVal = DAG.getNode(ISD::ADD, dl, VT, NewSP,
2382 DAG.getConstant(regSpillArea, VT));
2383 SDValue Ops[2] = { NewVal, Chain };
2384 return DAG.getMergeValues(Ops, 2, dl);
2388 static SDValue getFLUSHW(SDValue Op, SelectionDAG &DAG) {
2390 SDValue Chain = DAG.getNode(SPISD::FLUSHW,
2391 dl, MVT::Other, DAG.getEntryNode());
2395 static SDValue LowerFRAMEADDR(SDValue Op, SelectionDAG &DAG) {
2396 MachineFrameInfo *MFI = DAG.getMachineFunction().getFrameInfo();
2397 MFI->setFrameAddressIsTaken(true);
2399 EVT VT = Op.getValueType();
2401 unsigned FrameReg = SP::I6;
2403 uint64_t depth = Op.getConstantOperandVal(0);
2407 FrameAddr = DAG.getCopyFromReg(DAG.getEntryNode(), dl, FrameReg, VT);
2409 // flush first to make sure the windowed registers' values are in stack
2410 SDValue Chain = getFLUSHW(Op, DAG);
2411 FrameAddr = DAG.getCopyFromReg(Chain, dl, FrameReg, VT);
2413 for (uint64_t i = 0; i != depth; ++i) {
2414 SDValue Ptr = DAG.getNode(ISD::ADD,
2416 FrameAddr, DAG.getIntPtrConstant(56));
2417 FrameAddr = DAG.getLoad(MVT::i32, dl,
2420 MachinePointerInfo(), false, false, false, 0);
2426 static SDValue LowerRETURNADDR(SDValue Op, SelectionDAG &DAG,
2427 const SparcTargetLowering &TLI) {
2428 MachineFunction &MF = DAG.getMachineFunction();
2429 MachineFrameInfo *MFI = MF.getFrameInfo();
2430 MFI->setReturnAddressIsTaken(true);
2432 EVT VT = Op.getValueType();
2434 uint64_t depth = Op.getConstantOperandVal(0);
2438 unsigned RetReg = MF.addLiveIn(SP::I7,
2439 TLI.getRegClassFor(TLI.getPointerTy()));
2440 RetAddr = DAG.getCopyFromReg(DAG.getEntryNode(), dl, RetReg, VT);
2442 // Need frame address to find return address of the caller.
2443 MFI->setFrameAddressIsTaken(true);
2445 // flush first to make sure the windowed registers' values are in stack
2446 SDValue Chain = getFLUSHW(Op, DAG);
2447 RetAddr = DAG.getCopyFromReg(Chain, dl, SP::I6, VT);
2449 for (uint64_t i = 0; i != depth; ++i) {
2450 SDValue Ptr = DAG.getNode(ISD::ADD,
2453 DAG.getIntPtrConstant((i == depth-1)?60:56));
2454 RetAddr = DAG.getLoad(MVT::i32, dl,
2457 MachinePointerInfo(), false, false, false, 0);
2463 static SDValue LowerF64Op(SDValue Op, SelectionDAG &DAG, unsigned opcode)
2467 assert(Op.getValueType() == MVT::f64 && "LowerF64Op called on non-double!");
2468 assert(opcode == ISD::FNEG || opcode == ISD::FABS);
2470 // Lower fneg/fabs on f64 to fneg/fabs on f32.
2471 // fneg f64 => fneg f32:sub_even, fmov f32:sub_odd.
2472 // fabs f64 => fabs f32:sub_even, fmov f32:sub_odd.
2474 SDValue SrcReg64 = Op.getOperand(0);
2475 SDValue Hi32 = DAG.getTargetExtractSubreg(SP::sub_even, dl, MVT::f32,
2477 SDValue Lo32 = DAG.getTargetExtractSubreg(SP::sub_odd, dl, MVT::f32,
2480 Hi32 = DAG.getNode(opcode, dl, MVT::f32, Hi32);
2482 SDValue DstReg64 = SDValue(DAG.getMachineNode(TargetOpcode::IMPLICIT_DEF,
2484 DstReg64 = DAG.getTargetInsertSubreg(SP::sub_even, dl, MVT::f64,
2486 DstReg64 = DAG.getTargetInsertSubreg(SP::sub_odd, dl, MVT::f64,
2491 // Lower a f128 load into two f64 loads.
2492 static SDValue LowerF128Load(SDValue Op, SelectionDAG &DAG)
2495 LoadSDNode *LdNode = dyn_cast<LoadSDNode>(Op.getNode());
2496 assert(LdNode && LdNode->getOffset().getOpcode() == ISD::UNDEF
2497 && "Unexpected node type");
2499 unsigned alignment = LdNode->getAlignment();
2503 SDValue Hi64 = DAG.getLoad(MVT::f64,
2506 LdNode->getBasePtr(),
2507 LdNode->getPointerInfo(),
2508 false, false, false, alignment);
2509 EVT addrVT = LdNode->getBasePtr().getValueType();
2510 SDValue LoPtr = DAG.getNode(ISD::ADD, dl, addrVT,
2511 LdNode->getBasePtr(),
2512 DAG.getConstant(8, addrVT));
2513 SDValue Lo64 = DAG.getLoad(MVT::f64,
2517 LdNode->getPointerInfo(),
2518 false, false, false, alignment);
2520 SDValue SubRegEven = DAG.getTargetConstant(SP::sub_even64, MVT::i32);
2521 SDValue SubRegOdd = DAG.getTargetConstant(SP::sub_odd64, MVT::i32);
2523 SDNode *InFP128 = DAG.getMachineNode(TargetOpcode::IMPLICIT_DEF,
2525 InFP128 = DAG.getMachineNode(TargetOpcode::INSERT_SUBREG, dl,
2527 SDValue(InFP128, 0),
2530 InFP128 = DAG.getMachineNode(TargetOpcode::INSERT_SUBREG, dl,
2532 SDValue(InFP128, 0),
2535 SDValue OutChains[2] = { SDValue(Hi64.getNode(), 1),
2536 SDValue(Lo64.getNode(), 1) };
2537 SDValue OutChain = DAG.getNode(ISD::TokenFactor, dl, MVT::Other,
2539 SDValue Ops[2] = {SDValue(InFP128,0), OutChain};
2540 return DAG.getMergeValues(Ops, 2, dl);
2543 // Lower a f128 store into two f64 stores.
2544 static SDValue LowerF128Store(SDValue Op, SelectionDAG &DAG) {
2546 StoreSDNode *StNode = dyn_cast<StoreSDNode>(Op.getNode());
2547 assert(StNode && StNode->getOffset().getOpcode() == ISD::UNDEF
2548 && "Unexpected node type");
2549 SDValue SubRegEven = DAG.getTargetConstant(SP::sub_even64, MVT::i32);
2550 SDValue SubRegOdd = DAG.getTargetConstant(SP::sub_odd64, MVT::i32);
2552 SDNode *Hi64 = DAG.getMachineNode(TargetOpcode::EXTRACT_SUBREG,
2557 SDNode *Lo64 = DAG.getMachineNode(TargetOpcode::EXTRACT_SUBREG,
2563 unsigned alignment = StNode->getAlignment();
2567 SDValue OutChains[2];
2568 OutChains[0] = DAG.getStore(StNode->getChain(),
2571 StNode->getBasePtr(),
2572 MachinePointerInfo(),
2573 false, false, alignment);
2574 EVT addrVT = StNode->getBasePtr().getValueType();
2575 SDValue LoPtr = DAG.getNode(ISD::ADD, dl, addrVT,
2576 StNode->getBasePtr(),
2577 DAG.getConstant(8, addrVT));
2578 OutChains[1] = DAG.getStore(StNode->getChain(),
2582 MachinePointerInfo(),
2583 false, false, alignment);
2584 return DAG.getNode(ISD::TokenFactor, dl, MVT::Other,
2588 static SDValue LowerFNEG(SDValue Op, SelectionDAG &DAG,
2589 const SparcTargetLowering &TLI,
2591 if (Op.getValueType() == MVT::f64)
2592 return LowerF64Op(Op, DAG, ISD::FNEG);
2593 if (Op.getValueType() == MVT::f128)
2594 return TLI.LowerF128Op(Op, DAG, ((is64Bit) ? "_Qp_neg" : "_Q_neg"), 1);
2598 static SDValue LowerFABS(SDValue Op, SelectionDAG &DAG, bool isV9) {
2599 if (Op.getValueType() == MVT::f64)
2600 return LowerF64Op(Op, DAG, ISD::FABS);
2601 if (Op.getValueType() != MVT::f128)
2604 // Lower fabs on f128 to fabs on f64
2605 // fabs f128 => fabs f64:sub_even64, fmov f64:sub_odd64
2608 SDValue SrcReg128 = Op.getOperand(0);
2609 SDValue Hi64 = DAG.getTargetExtractSubreg(SP::sub_even64, dl, MVT::f64,
2611 SDValue Lo64 = DAG.getTargetExtractSubreg(SP::sub_odd64, dl, MVT::f64,
2614 Hi64 = DAG.getNode(Op.getOpcode(), dl, MVT::f64, Hi64);
2616 Hi64 = LowerF64Op(Hi64, DAG, ISD::FABS);
2618 SDValue DstReg128 = SDValue(DAG.getMachineNode(TargetOpcode::IMPLICIT_DEF,
2620 DstReg128 = DAG.getTargetInsertSubreg(SP::sub_even64, dl, MVT::f128,
2622 DstReg128 = DAG.getTargetInsertSubreg(SP::sub_odd64, dl, MVT::f128,
2627 static SDValue LowerADDC_ADDE_SUBC_SUBE(SDValue Op, SelectionDAG &DAG) {
2629 if (Op.getValueType() != MVT::i64)
2633 SDValue Src1 = Op.getOperand(0);
2634 SDValue Src1Lo = DAG.getNode(ISD::TRUNCATE, dl, MVT::i32, Src1);
2635 SDValue Src1Hi = DAG.getNode(ISD::SRL, dl, MVT::i64, Src1,
2636 DAG.getConstant(32, MVT::i64));
2637 Src1Hi = DAG.getNode(ISD::TRUNCATE, dl, MVT::i32, Src1Hi);
2639 SDValue Src2 = Op.getOperand(1);
2640 SDValue Src2Lo = DAG.getNode(ISD::TRUNCATE, dl, MVT::i32, Src2);
2641 SDValue Src2Hi = DAG.getNode(ISD::SRL, dl, MVT::i64, Src2,
2642 DAG.getConstant(32, MVT::i64));
2643 Src2Hi = DAG.getNode(ISD::TRUNCATE, dl, MVT::i32, Src2Hi);
2646 bool hasChain = false;
2647 unsigned hiOpc = Op.getOpcode();
2648 switch (Op.getOpcode()) {
2649 default: llvm_unreachable("Invalid opcode");
2650 case ISD::ADDC: hiOpc = ISD::ADDE; break;
2651 case ISD::ADDE: hasChain = true; break;
2652 case ISD::SUBC: hiOpc = ISD::SUBE; break;
2653 case ISD::SUBE: hasChain = true; break;
2656 SDVTList VTs = DAG.getVTList(MVT::i32, MVT::Glue);
2658 Lo = DAG.getNode(Op.getOpcode(), dl, VTs, Src1Lo, Src2Lo,
2661 Lo = DAG.getNode(Op.getOpcode(), dl, VTs, Src1Lo, Src2Lo);
2663 SDValue Hi = DAG.getNode(hiOpc, dl, VTs, Src1Hi, Src2Hi, Lo.getValue(1));
2664 SDValue Carry = Hi.getValue(1);
2666 Lo = DAG.getNode(ISD::ZERO_EXTEND, dl, MVT::i64, Lo);
2667 Hi = DAG.getNode(ISD::ZERO_EXTEND, dl, MVT::i64, Hi);
2668 Hi = DAG.getNode(ISD::SHL, dl, MVT::i64, Hi,
2669 DAG.getConstant(32, MVT::i64));
2671 SDValue Dst = DAG.getNode(ISD::OR, dl, MVT::i64, Hi, Lo);
2672 SDValue Ops[2] = { Dst, Carry };
2673 return DAG.getMergeValues(Ops, 2, dl);
2676 SDValue SparcTargetLowering::
2677 LowerOperation(SDValue Op, SelectionDAG &DAG) const {
2679 bool hasHardQuad = Subtarget->hasHardQuad();
2680 bool is64Bit = Subtarget->is64Bit();
2681 bool isV9 = Subtarget->isV9();
2683 switch (Op.getOpcode()) {
2684 default: llvm_unreachable("Should not custom lower this!");
2686 case ISD::RETURNADDR: return LowerRETURNADDR(Op, DAG, *this);
2687 case ISD::FRAMEADDR: return LowerFRAMEADDR(Op, DAG);
2688 case ISD::GlobalTLSAddress: return LowerGlobalTLSAddress(Op, DAG);
2689 case ISD::GlobalAddress: return LowerGlobalAddress(Op, DAG);
2690 case ISD::BlockAddress: return LowerBlockAddress(Op, DAG);
2691 case ISD::ConstantPool: return LowerConstantPool(Op, DAG);
2692 case ISD::FP_TO_SINT: return LowerFP_TO_SINT(Op, DAG, *this,
2694 case ISD::SINT_TO_FP: return LowerSINT_TO_FP(Op, DAG, *this,
2696 case ISD::FP_TO_UINT: return LowerFP_TO_UINT(Op, DAG, *this,
2698 case ISD::UINT_TO_FP: return LowerUINT_TO_FP(Op, DAG, *this,
2700 case ISD::BR_CC: return LowerBR_CC(Op, DAG, *this,
2702 case ISD::SELECT_CC: return LowerSELECT_CC(Op, DAG, *this,
2704 case ISD::VASTART: return LowerVASTART(Op, DAG, *this);
2705 case ISD::VAARG: return LowerVAARG(Op, DAG);
2706 case ISD::DYNAMIC_STACKALLOC: return LowerDYNAMIC_STACKALLOC(Op, DAG,
2709 case ISD::LOAD: return LowerF128Load(Op, DAG);
2710 case ISD::STORE: return LowerF128Store(Op, DAG);
2711 case ISD::FADD: return LowerF128Op(Op, DAG,
2712 getLibcallName(RTLIB::ADD_F128), 2);
2713 case ISD::FSUB: return LowerF128Op(Op, DAG,
2714 getLibcallName(RTLIB::SUB_F128), 2);
2715 case ISD::FMUL: return LowerF128Op(Op, DAG,
2716 getLibcallName(RTLIB::MUL_F128), 2);
2717 case ISD::FDIV: return LowerF128Op(Op, DAG,
2718 getLibcallName(RTLIB::DIV_F128), 2);
2719 case ISD::FSQRT: return LowerF128Op(Op, DAG,
2720 getLibcallName(RTLIB::SQRT_F128),1);
2721 case ISD::FNEG: return LowerFNEG(Op, DAG, *this, is64Bit);
2722 case ISD::FABS: return LowerFABS(Op, DAG, isV9);
2723 case ISD::FP_EXTEND: return LowerF128_FPEXTEND(Op, DAG, *this);
2724 case ISD::FP_ROUND: return LowerF128_FPROUND(Op, DAG, *this);
2728 case ISD::SUBE: return LowerADDC_ADDE_SUBC_SUBE(Op, DAG);
2733 SparcTargetLowering::EmitInstrWithCustomInserter(MachineInstr *MI,
2734 MachineBasicBlock *BB) const {
2735 const TargetInstrInfo &TII = *getTargetMachine().getInstrInfo();
2738 DebugLoc dl = MI->getDebugLoc();
2739 // Figure out the conditional branch opcode to use for this select_cc.
2740 switch (MI->getOpcode()) {
2741 default: llvm_unreachable("Unknown SELECT_CC!");
2742 case SP::SELECT_CC_Int_ICC:
2743 case SP::SELECT_CC_FP_ICC:
2744 case SP::SELECT_CC_DFP_ICC:
2745 case SP::SELECT_CC_QFP_ICC:
2746 BROpcode = SP::BCOND;
2748 case SP::SELECT_CC_Int_FCC:
2749 case SP::SELECT_CC_FP_FCC:
2750 case SP::SELECT_CC_DFP_FCC:
2751 case SP::SELECT_CC_QFP_FCC:
2752 BROpcode = SP::FBCOND;
2756 CC = (SPCC::CondCodes)MI->getOperand(3).getImm();
2758 // To "insert" a SELECT_CC instruction, we actually have to insert the diamond
2759 // control-flow pattern. The incoming instruction knows the destination vreg
2760 // to set, the condition code register to branch on, the true/false values to
2761 // select between, and a branch opcode to use.
2762 const BasicBlock *LLVM_BB = BB->getBasicBlock();
2763 MachineFunction::iterator It = BB;
2770 // fallthrough --> copy0MBB
2771 MachineBasicBlock *thisMBB = BB;
2772 MachineFunction *F = BB->getParent();
2773 MachineBasicBlock *copy0MBB = F->CreateMachineBasicBlock(LLVM_BB);
2774 MachineBasicBlock *sinkMBB = F->CreateMachineBasicBlock(LLVM_BB);
2775 F->insert(It, copy0MBB);
2776 F->insert(It, sinkMBB);
2778 // Transfer the remainder of BB and its successor edges to sinkMBB.
2779 sinkMBB->splice(sinkMBB->begin(), BB,
2780 llvm::next(MachineBasicBlock::iterator(MI)),
2782 sinkMBB->transferSuccessorsAndUpdatePHIs(BB);
2784 // Add the true and fallthrough blocks as its successors.
2785 BB->addSuccessor(copy0MBB);
2786 BB->addSuccessor(sinkMBB);
2788 BuildMI(BB, dl, TII.get(BROpcode)).addMBB(sinkMBB).addImm(CC);
2791 // %FalseValue = ...
2792 // # fallthrough to sinkMBB
2795 // Update machine-CFG edges
2796 BB->addSuccessor(sinkMBB);
2799 // %Result = phi [ %FalseValue, copy0MBB ], [ %TrueValue, thisMBB ]
2802 BuildMI(*BB, BB->begin(), dl, TII.get(SP::PHI), MI->getOperand(0).getReg())
2803 .addReg(MI->getOperand(2).getReg()).addMBB(copy0MBB)
2804 .addReg(MI->getOperand(1).getReg()).addMBB(thisMBB);
2806 MI->eraseFromParent(); // The pseudo instruction is gone now.
2810 //===----------------------------------------------------------------------===//
2811 // Sparc Inline Assembly Support
2812 //===----------------------------------------------------------------------===//
2814 /// getConstraintType - Given a constraint letter, return the type of
2815 /// constraint it is for this target.
2816 SparcTargetLowering::ConstraintType
2817 SparcTargetLowering::getConstraintType(const std::string &Constraint) const {
2818 if (Constraint.size() == 1) {
2819 switch (Constraint[0]) {
2821 case 'r': return C_RegisterClass;
2825 return TargetLowering::getConstraintType(Constraint);
2828 std::pair<unsigned, const TargetRegisterClass*>
2829 SparcTargetLowering::getRegForInlineAsmConstraint(const std::string &Constraint,
2831 if (Constraint.size() == 1) {
2832 switch (Constraint[0]) {
2834 return std::make_pair(0U, &SP::IntRegsRegClass);
2838 return TargetLowering::getRegForInlineAsmConstraint(Constraint, VT);
2842 SparcTargetLowering::isOffsetFoldingLegal(const GlobalAddressSDNode *GA) const {
2843 // The Sparc target isn't yet aware of offsets.
2847 void SparcTargetLowering::ReplaceNodeResults(SDNode *N,
2848 SmallVectorImpl<SDValue>& Results,
2849 SelectionDAG &DAG) const {
2853 RTLIB::Libcall libCall = RTLIB::UNKNOWN_LIBCALL;
2855 switch (N->getOpcode()) {
2857 llvm_unreachable("Do not know how to custom type legalize this operation!");
2859 case ISD::FP_TO_SINT:
2860 case ISD::FP_TO_UINT:
2861 // Custom lower only if it involves f128 or i64.
2862 if (N->getOperand(0).getValueType() != MVT::f128
2863 || N->getValueType(0) != MVT::i64)
2865 libCall = ((N->getOpcode() == ISD::FP_TO_SINT)
2866 ? RTLIB::FPTOSINT_F128_I64
2867 : RTLIB::FPTOUINT_F128_I64);
2869 Results.push_back(LowerF128Op(SDValue(N, 0),
2871 getLibcallName(libCall),
2875 case ISD::SINT_TO_FP:
2876 case ISD::UINT_TO_FP:
2877 // Custom lower only if it involves f128 or i64.
2878 if (N->getValueType(0) != MVT::f128
2879 || N->getOperand(0).getValueType() != MVT::i64)
2882 libCall = ((N->getOpcode() == ISD::SINT_TO_FP)
2883 ? RTLIB::SINTTOFP_I64_F128
2884 : RTLIB::UINTTOFP_I64_F128);
2886 Results.push_back(LowerF128Op(SDValue(N, 0),
2888 getLibcallName(libCall),