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Vector argument must be passed in memory location aligned on 16-byte boundary.

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llvm-svn: 28505
This commit is contained in:
Evan Cheng 2006-05-26 20:37:47 +00:00
parent 7f468901bb
commit 25db1a52d2
1 changed files with 18 additions and 2 deletions
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20
lib/Target/X86/X86ISelLowering.cpp
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@ -442,6 +442,9 @@ SDOperand X86TargetLowering::LowerCCCArguments(SDOperand Op, SelectionDAG &DAG)
ArgValues.push_back(ArgValue);
NumXMMRegs += ObjXMMRegs;
} else {
// XMM arguments have to be aligned on 16-byte boundary.
if (ObjSize == 16)
ArgOffset = ((ArgOffset + 15) / 16) * 16;
// Create the frame index object for this incoming parameter...
int FI = MFI->CreateFixedObject(ObjSize, ArgOffset);
SDOperand FIN = DAG.getFrameIndex(FI, getPointerTy());
@ -516,8 +519,11 @@ SDOperand X86TargetLowering::LowerCCCCallTo(SDOperand Op, SelectionDAG &DAG) {
case MVT::v2f64:
if (NumXMMRegs < 4)
++NumXMMRegs;
else
else {
// XMM arguments have to be aligned on 16-byte boundary.
NumBytes = ((NumBytes + 15) / 16) * 16;
NumBytes += 16;
}
break;
}
}
@ -574,6 +580,8 @@ SDOperand X86TargetLowering::LowerCCCCallTo(SDOperand Op, SelectionDAG &DAG) {
RegsToPass.push_back(std::make_pair(XMMArgRegs[NumXMMRegs], Arg));
NumXMMRegs++;
} else {
// XMM arguments have to be aligned on 16-byte boundary.
ArgOffset = ((ArgOffset + 15) / 16) * 16;
SDOperand PtrOff = DAG.getConstant(ArgOffset, getPointerTy());
PtrOff = DAG.getNode(ISD::ADD, getPointerTy(), StackPtr, PtrOff);
MemOpChains.push_back(DAG.getNode(ISD::STORE, MVT::Other, Chain,
@ -911,6 +919,9 @@ X86TargetLowering::LowerFastCCArguments(SDOperand Op, SelectionDAG &DAG) {
}
if (ObjSize) {
// XMM arguments have to be aligned on 16-byte boundary.
if (ObjSize == 16)
ArgOffset = ((ArgOffset + 15) / 16) * 16;
// Create the SelectionDAG nodes corresponding to a load from this
// parameter.
int FI = MFI->CreateFixedObject(ObjSize, ArgOffset);
@ -1027,8 +1038,11 @@ X86TargetLowering::LowerFastCCArguments(SDOperand Op, SelectionDAG &DAG) {
case MVT::v2f64:
if (NumXMMRegs < 4)
NumXMMRegs++;
else
else {
// XMM arguments have to be aligned on 16-byte boundary.
NumBytes = ((NumBytes + 15) / 16) * 16;
NumBytes += 16;
}
break;
}
}
@ -1088,6 +1102,8 @@ X86TargetLowering::LowerFastCCArguments(SDOperand Op, SelectionDAG &DAG) {
RegsToPass.push_back(std::make_pair(XMMArgRegs[NumXMMRegs], Arg));
NumXMMRegs++;
} else {
// XMM arguments have to be aligned on 16-byte boundary.
ArgOffset = ((ArgOffset + 15) / 16) * 16;
SDOperand PtrOff = DAG.getConstant(ArgOffset, getPointerTy());
PtrOff = DAG.getNode(ISD::ADD, getPointerTy(), StackPtr, PtrOff);
MemOpChains.push_back(DAG.getNode(ISD::STORE, MVT::Other, Chain,