replica
/
hanchenye-llvm-project
2
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

i32 values are passed extended also on stack. Handle this in generic way 

llvm-svn: 76047
This commit is contained in:
Anton Korobeynikov 2009-07-16 14:29:05 +00:00
parent 1fa01d307c
commit a293caf2ed
1 changed files with 24 additions and 23 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

47
llvm/lib/Target/SystemZ/SystemZISelLowering.cpp
View File

@ -210,15 +210,16 @@ SDValue SystemZTargetLowering::LowerCCCArguments(SDValue Op,
SmallVector<SDValue, 16> ArgValues;
for (unsigned i = 0, e = ArgLocs.size(); i != e; ++i) {
SDValue ArgValue;
CCValAssign &VA = ArgLocs[i];
MVT LocVT = VA.getLocVT();
if (VA.isRegLoc()) {
// Arguments passed in registers
MVT RegVT = VA.getLocVT();
TargetRegisterClass *RC;
switch (RegVT.getSimpleVT()) {
switch (LocVT.getSimpleVT()) {
default:
cerr << "LowerFORMAL_ARGUMENTS Unhandled argument type: "
<< RegVT.getSimpleVT()
<< LocVT.getSimpleVT()
<< "\n";
abort();
case MVT::i64:
@ -234,37 +235,37 @@ SDValue SystemZTargetLowering::LowerCCCArguments(SDValue Op,
unsigned VReg = RegInfo.createVirtualRegister(RC);
RegInfo.addLiveIn(VA.getLocReg(), VReg);
SDValue ArgValue = DAG.getCopyFromReg(Root, dl, VReg, RegVT);
// If this is an 8/16/32-bit value, it is really passed promoted to 64
// bits. Insert an assert[sz]ext to capture this, then truncate to the
// right size.
if (VA.getLocInfo() == CCValAssign::SExt)
ArgValue = DAG.getNode(ISD::AssertSext, dl, RegVT, ArgValue,
DAG.getValueType(VA.getValVT()));
else if (VA.getLocInfo() == CCValAssign::ZExt)
ArgValue = DAG.getNode(ISD::AssertZext, dl, RegVT, ArgValue,
DAG.getValueType(VA.getValVT()));
if (VA.getLocInfo() != CCValAssign::Full)
ArgValue = DAG.getNode(ISD::TRUNCATE, dl, VA.getValVT(), ArgValue);
ArgValues.push_back(ArgValue);
ArgValue = DAG.getCopyFromReg(Root, dl, VReg, LocVT);
} else {
// Sanity check
assert(VA.isMemLoc());
// Create the nodes corresponding to a load from this parameter slot.
// Create the frame index object for this incoming parameter...
int FI = MFI->CreateFixedObject(VA.getValVT().getSizeInBits()/8,
int FI = MFI->CreateFixedObject(LocVT.getSizeInBits()/8,
VA.getLocMemOffset());
// Create the SelectionDAG nodes corresponding to a load
//from this parameter
// from this parameter
SDValue FIN = DAG.getFrameIndex(FI, getPointerTy());
ArgValues.push_back(DAG.getLoad(VA.getValVT(), dl, Root, FIN,
PseudoSourceValue::getFixedStack(FI), 0));
ArgValue = DAG.getLoad(LocVT, dl, Root, FIN,
PseudoSourceValue::getFixedStack(FI), 0);
}
// If this is an 8/16/32-bit value, it is really passed promoted to 64
// bits. Insert an assert[sz]ext to capture this, then truncate to the
// right size.
if (VA.getLocInfo() == CCValAssign::SExt)
ArgValue = DAG.getNode(ISD::AssertSext, dl, LocVT, ArgValue,
DAG.getValueType(VA.getValVT()));
else if (VA.getLocInfo() == CCValAssign::ZExt)
ArgValue = DAG.getNode(ISD::AssertZext, dl, LocVT, ArgValue,
DAG.getValueType(VA.getValVT()));
if (VA.getLocInfo() != CCValAssign::Full)
ArgValue = DAG.getNode(ISD::TRUNCATE, dl, VA.getValVT(), ArgValue);
ArgValues.push_back(ArgValue);
}
ArgValues.push_back(Root);