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Remove variable that keeps the size of area used to save byval or variable

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argument registers on the callee's stack frame, along with functions that set
and get it.
    
It is not necessary to add the size of this area when computing stack size in
emitPrologue, since it has already been accounted for in
PEI::calculateFrameObjectOffsets.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144549 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Akira Hatanaka 2011-11-14 18:56:20 +00:00
parent f054e19819
commit 47a4ab84fe
3 changed files with 1 additions and 12 deletions
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1
lib/Target/Mips/MipsFrameLowering.cpp
View File

@ -163,7 +163,6 @@ void MipsFrameLowering::emitPrologue(MachineFunction &MF) const {
(MFI->getObjectOffset(MipsFI->getGPFI()) + RegSize) :
MipsFI->getMaxCallFrameSize();
unsigned StackSize = AlignOffset(LocalVarAreaOffset, StackAlign) +
AlignOffset(MipsFI->getRegSaveAreaSize(), StackAlign) +
AlignOffset(MFI->getStackSize(), StackAlign);
// Update stack size

1
lib/Target/Mips/MipsISelLowering.cpp
View File

@ -2459,7 +2459,6 @@ CopyMips64ByValRegs(MachineFunction &MF, SDValue Chain, DebugLoc dl,
if (IsRegLoc) {
Reg = std::find(Mips64IntRegs, Mips64IntRegs + 8, VA.getLocReg());
FOOffset = (Reg - Mips64IntRegs) * 8 - 8 * 8;
MipsFI->setRegSaveAreaSize(-FOOffset);
}
else
FOOffset = VA.getLocMemOffset();

11
lib/Target/Mips/MipsMachineFunction.h
View File

@ -51,16 +51,12 @@ private:
mutable int DynAllocFI; // Frame index of dynamically allocated stack area.
unsigned MaxCallFrameSize;
// Size of area on callee's stack frame which is used to save va_arg or
// byval arguments passed in registers.
unsigned RegSaveAreaSize;
public:
MipsFunctionInfo(MachineFunction& MF)
: MF(MF), SRetReturnReg(0), GlobalBaseReg(0),
VarArgsFrameIndex(0), InArgFIRange(std::make_pair(-1, 0)),
OutArgFIRange(std::make_pair(-1, 0)), GPFI(0), DynAllocFI(0),
MaxCallFrameSize(0), RegSaveAreaSize(0)
MaxCallFrameSize(0)
{}
bool isInArgFI(int FI) const {
@ -104,11 +100,6 @@ public:
unsigned getMaxCallFrameSize() const { return MaxCallFrameSize; }
void setMaxCallFrameSize(unsigned S) { MaxCallFrameSize = S; }
unsigned getRegSaveAreaSize() const { return RegSaveAreaSize; }
void setRegSaveAreaSize(unsigned S) {
if (RegSaveAreaSize < S) RegSaveAreaSize = S;
}
};
} // end of namespace llvm