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Provide the register scavenger to processFunctionBeforeFrameFinalized

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Add the current PEI register scavenger as a parameter to the
processFunctionBeforeFrameFinalized callback.

This change is necessary in order to allow the PowerPC target code to
set the register scavenger frame index after the save-area offset
adjustments performed by processFunctionBeforeFrameFinalized. Only
after these adjustments have been made is it possible to estimate
the size of the stack frame.

llvm-svn: 177108
This commit is contained in:
Hal Finkel 2013-03-14 20:33:40 +00:00
parent e71925b570
commit a2a564fb2e
10 changed files with 18 additions and 12 deletions
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3
include/llvm/Target/TargetFrameLowering.h
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@ -194,7 +194,8 @@ public:
/// finalized. Once the frame is finalized, MO_FrameIndex operands are
/// replaced with direct constants. This method is optional.
///
virtual void processFunctionBeforeFrameFinalized(MachineFunction &MF) const {
virtual void processFunctionBeforeFrameFinalized(MachineFunction &MF,
RegScavenger *RS = NULL) const {
}
/// eliminateCallFramePseudoInstr - This method is called during prolog/epilog

2
lib/CodeGen/PrologEpilogInserter.cpp
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@ -101,7 +101,7 @@ bool PEI::runOnMachineFunction(MachineFunction &Fn) {
// Allow the target machine to make final modifications to the function
// before the frame layout is finalized.
TFI->processFunctionBeforeFrameFinalized(Fn);
TFI->processFunctionBeforeFrameFinalized(Fn, RS);
// Calculate actual frame offsets for all abstract stack objects...
calculateFrameObjectOffsets(Fn);

2
lib/Target/MBlaze/MBlazeRegisterInfo.cpp
View File

@ -122,7 +122,7 @@ eliminateFrameIndex(MachineBasicBlock::iterator II, int SPAdj,
}
void MBlazeRegisterInfo::
processFunctionBeforeFrameFinalized(MachineFunction &MF) const {
processFunctionBeforeFrameFinalized(MachineFunction &MF, RegScavenger *) const {
// Set the stack offset where GP must be saved/loaded from.
MachineFrameInfo *MFI = MF.getFrameInfo();
MBlazeFunctionInfo *MBlazeFI = MF.getInfo<MBlazeFunctionInfo>();

3
lib/Target/MBlaze/MBlazeRegisterInfo.h
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@ -55,7 +55,8 @@ struct MBlazeRegisterInfo : public MBlazeGenRegisterInfo {
int SPAdj, unsigned FIOperandNum,
RegScavenger *RS = NULL) const;
void processFunctionBeforeFrameFinalized(MachineFunction &MF) const;
void processFunctionBeforeFrameFinalized(MachineFunction &MF,
RegScavenger *RS = NULL) const;
/// Debug information queries.
unsigned getFrameRegister(const MachineFunction &MF) const;

4
lib/Target/MSP430/MSP430FrameLowering.cpp
View File

@ -285,8 +285,8 @@ eliminateCallFramePseudoInstr(MachineFunction &MF, MachineBasicBlock &MBB,
}
void
MSP430FrameLowering::processFunctionBeforeFrameFinalized(MachineFunction &MF)
const {
MSP430FrameLowering::processFunctionBeforeFrameFinalized(MachineFunction &MF,
RegScavenger *) const {
// Create a frame entry for the FPW register that must be saved.
if (hasFP(MF)) {
int FrameIdx = MF.getFrameInfo()->CreateFixedObject(2, -4, true);

3
lib/Target/MSP430/MSP430FrameLowering.h
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@ -50,7 +50,8 @@ public:
bool hasFP(const MachineFunction &MF) const;
bool hasReservedCallFrame(const MachineFunction &MF) const;
void processFunctionBeforeFrameFinalized(MachineFunction &MF) const;
void processFunctionBeforeFrameFinalized(MachineFunction &MF,
RegScavenger *RS = NULL) const;
};
} // End llvm namespace

3
lib/Target/Mips/MipsRegisterInfo.h
View File

@ -58,7 +58,8 @@ public:
int SPAdj, unsigned FIOperandNum,
RegScavenger *RS = NULL) const;
void processFunctionBeforeFrameFinalized(MachineFunction &MF) const;
void processFunctionBeforeFrameFinalized(MachineFunction &MF,
RegScavenger *RS = NULL) const;
/// Debug information queries.
unsigned getFrameRegister(const MachineFunction &MF) const;

4
lib/Target/PowerPC/PPCFrameLowering.cpp
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@ -841,8 +841,8 @@ PPCFrameLowering::processFunctionBeforeCalleeSavedScan(MachineFunction &MF,
}
}
void PPCFrameLowering::processFunctionBeforeFrameFinalized(MachineFunction &MF)
const {
void PPCFrameLowering::processFunctionBeforeFrameFinalized(MachineFunction &MF,
RegScavenger *) const {
// Early exit if not using the SVR4 ABI.
if (!Subtarget.isSVR4ABI())
return;

3
lib/Target/PowerPC/PPCFrameLowering.h
View File

@ -44,7 +44,8 @@ public:
void processFunctionBeforeCalleeSavedScan(MachineFunction &MF,
RegScavenger *RS = NULL) const;
void processFunctionBeforeFrameFinalized(MachineFunction &MF) const;
void processFunctionBeforeFrameFinalized(MachineFunction &MF,
RegScavenger *RS = NULL) const;
bool spillCalleeSavedRegisters(MachineBasicBlock &MBB,
MachineBasicBlock::iterator MI,

3
lib/Target/Sparc/SparcRegisterInfo.h
View File

@ -40,7 +40,8 @@ struct SparcRegisterInfo : public SparcGenRegisterInfo {
int SPAdj, unsigned FIOperandNum,
RegScavenger *RS = NULL) const;
void processFunctionBeforeFrameFinalized(MachineFunction &MF) const;
void processFunctionBeforeFrameFinalized(MachineFunction &MF,
RegScavenger *RS = NULL) const;
// Debug information queries.
unsigned getFrameRegister(const MachineFunction &MF) const;