本文整理汇总了C++中SparcMachineFunctionInfo::setSRetReturnReg方法的典型用法代码示例。如果您正苦于以下问题：C++ SparcMachineFunctionInfo::setSRetReturnReg方法的具体用法？C++ SparcMachineFunctionInfo::setSRetReturnReg怎么用？C++ SparcMachineFunctionInfo::setSRetReturnReg使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类SparcMachineFunctionInfo的用法示例。
在下文中一共展示了SparcMachineFunctionInfo::setSRetReturnReg方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: CCInfo
//.........这里部分代码省略.........
true);
SDValue FIPtr = DAG.getFrameIndex(FI, getPointerTy());
SDValue HiVal = DAG.getLoad(MVT::i32, dl, Chain, FIPtr,
MachinePointerInfo(),
false, false, 0);
int FI2 = MF.getFrameInfo()->CreateFixedObject(4,
Offset+4,
true);
SDValue FIPtr2 = DAG.getFrameIndex(FI2, getPointerTy());
SDValue LoVal = DAG.getLoad(MVT::i32, dl, Chain, FIPtr2,
MachinePointerInfo(),
false, false, 0);
SDValue WholeValue =
DAG.getNode(ISD::BUILD_PAIR, dl, MVT::i64, LoVal, HiVal);
WholeValue = DAG.getNode(ISD::BITCAST, dl, MVT::f64, WholeValue);
InVals.push_back(WholeValue);
continue;
}
int FI = MF.getFrameInfo()->CreateFixedObject(4,
Offset,
true);
SDValue FIPtr = DAG.getFrameIndex(FI, getPointerTy());
SDValue Load ;
if (VA.getValVT() == MVT::i32 || VA.getValVT() == MVT::f32) {
Load = DAG.getLoad(VA.getValVT(), dl, Chain, FIPtr,
MachinePointerInfo(),
false, false, 0);
} else {
ISD::LoadExtType LoadOp = ISD::SEXTLOAD;
// Sparc is big endian, so add an offset based on the ObjectVT.
unsigned Offset = 4-std::max(1U, VA.getValVT().getSizeInBits()/8);
FIPtr = DAG.getNode(ISD::ADD, dl, MVT::i32, FIPtr,
DAG.getConstant(Offset, MVT::i32));
Load = DAG.getExtLoad(LoadOp, dl, MVT::i32, Chain, FIPtr,
MachinePointerInfo(),
VA.getValVT(), false, false,0);
Load = DAG.getNode(ISD::TRUNCATE, dl, VA.getValVT(), Load);
}
InVals.push_back(Load);
}
if (MF.getFunction()->hasStructRetAttr()) {
//Copy the SRet Argument to SRetReturnReg
SparcMachineFunctionInfo *SFI = MF.getInfo<SparcMachineFunctionInfo>();
unsigned Reg = SFI->getSRetReturnReg();
if (!Reg) {
Reg = MF.getRegInfo().createVirtualRegister(&SP::IntRegsRegClass);
SFI->setSRetReturnReg(Reg);
}
SDValue Copy = DAG.getCopyToReg(DAG.getEntryNode(), dl, Reg, InVals[0]);
Chain = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Copy, Chain);
}
// Store remaining ArgRegs to the stack if this is a varargs function.
if (isVarArg) {
static const unsigned ArgRegs[] = {
SP::I0, SP::I1, SP::I2, SP::I3, SP::I4, SP::I5
};
unsigned NumAllocated = CCInfo.getFirstUnallocated(ArgRegs, 6);
const unsigned *CurArgReg = ArgRegs+NumAllocated, *ArgRegEnd = ArgRegs+6;
unsigned ArgOffset = CCInfo.getNextStackOffset();
if (NumAllocated == 6)
ArgOffset += StackOffset;
else {
assert(!ArgOffset);
ArgOffset = 68+4*NumAllocated;
}
// Remember the vararg offset for the va_start implementation.
FuncInfo->setVarArgsFrameOffset(ArgOffset);
std::vector<SDValue> OutChains;
for (; CurArgReg != ArgRegEnd; ++CurArgReg) {
unsigned VReg = RegInfo.createVirtualRegister(&SP::IntRegsRegClass);
MF.getRegInfo().addLiveIn(*CurArgReg, VReg);
SDValue Arg = DAG.getCopyFromReg(DAG.getRoot(), dl, VReg, MVT::i32);
int FrameIdx = MF.getFrameInfo()->CreateFixedObject(4, ArgOffset,
true);
SDValue FIPtr = DAG.getFrameIndex(FrameIdx, MVT::i32);
OutChains.push_back(DAG.getStore(DAG.getRoot(), dl, Arg, FIPtr,
MachinePointerInfo(),
false, false, 0));
ArgOffset += 4;
}
if (!OutChains.empty()) {
OutChains.push_back(Chain);
Chain = DAG.getNode(ISD::TokenFactor, dl, MVT::Other,
&OutChains[0], OutChains.size());
}
}
return Chain;
}