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Backing out Jim's LR spill changes. This was causing llvm-gcc bootstrapping

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to infinite loop:
PPCMachineFunctionInfo.h updated: 1.2 -> 1.3
PPCRegisterInfo.cpp updated: 1.110 -> 1.111
PPCRegisterInfo.h updated: 1.28 -> 1.29


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34652 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng 2007-02-27 02:55:29 +00:00
parent 79224c4407
commit 3d3d627513
3 changed files with 2 additions and 19 deletions
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7
lib/Target/PowerPC/PPCMachineFunctionInfo.h
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@ -26,10 +26,6 @@ private:
/// stored. Also used as an anchor for instructions that need to be altered
/// when using frame pointers (dyna_add, dyna_sub.)
int FramePointerSaveIndex;
/// UsesLR - Indicates whether LR is used in the current function.
///
bool UsesLR;
public:
PPCFunctionInfo(MachineFunction& MF)
@ -38,9 +34,6 @@ public:
int getFramePointerSaveIndex() const { return FramePointerSaveIndex; }
void setFramePointerSaveIndex(int Idx) { FramePointerSaveIndex = Idx; }
void setUsesLR(bool U) { UsesLR = U; }
bool usesLR() { return UsesLR; }
};

13
lib/Target/PowerPC/PPCRegisterInfo.cpp
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@ -538,8 +538,8 @@ bool PPCRegisterInfo::hasFP(const MachineFunction &MF) const {
/// usesLR - Returns if the link registers (LR) has been used in the function.
///
bool PPCRegisterInfo::usesLR(MachineFunction &MF) const {
PPCFunctionInfo *FI = MF.getInfo<PPCFunctionInfo>();
return FI->usesLR();
const bool *PhysRegsUsed = MF.getUsedPhysregs();
return PhysRegsUsed[getRARegister()];
}
void PPCRegisterInfo::
@ -874,15 +874,6 @@ void PPCRegisterInfo::determineFrameLayout(MachineFunction &MF) const {
MFI->setStackSize(FrameSize);
}
void PPCRegisterInfo::processFunctionBeforeCalleeSavedScan(MachineFunction &MF)
const {
// Save and clear the LR state.
PPCFunctionInfo *FI = MF.getInfo<PPCFunctionInfo>();
unsigned LR = getRARegister();
FI->setUsesLR(MF.isPhysRegUsed(LR));
MF.changePhyRegUsed(LR, false);
}
void PPCRegisterInfo::emitPrologue(MachineFunction &MF) const {
MachineBasicBlock &MBB = MF.front(); // Prolog goes in entry BB
MachineBasicBlock::iterator MBBI = MBB.begin();

1
lib/Target/PowerPC/PPCRegisterInfo.h
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@ -82,7 +82,6 @@ public:
/// frame size.
void determineFrameLayout(MachineFunction &MF) const;
void processFunctionBeforeCalleeSavedScan(MachineFunction &MF) const;
void emitPrologue(MachineFunction &MF) const;
void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const;