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[mips] Implement eliminateCallFramePseudoInstr() in MipsFrameLowering. NFC.

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Summary:
Avoid duplicate code in Mips16FrameLowering and MipsSEFrameLowering by
providing an implementation of the eliminateCallFramePseudoInstr()
function from their base class.

Depends on D8640.

Reviewers: dsanders

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D8641

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@233909 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Vasileios Kalintiris 2015-04-02 11:09:40 +00:00
parent 4eb165220f
commit 3fabd02ea5
6 changed files with 22 additions and 41 deletions
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16
lib/Target/Mips/Mips16FrameLowering.cpp
View File

@ -143,22 +143,6 @@ bool Mips16FrameLowering::restoreCalleeSavedRegisters(MachineBasicBlock &MBB,
return true;
}
// Eliminate ADJCALLSTACKDOWN, ADJCALLSTACKUP pseudo instructions
void Mips16FrameLowering::
eliminateCallFramePseudoInstr(MachineFunction &MF, MachineBasicBlock &MBB,
MachineBasicBlock::iterator I) const {
if (!hasReservedCallFrame(MF)) {
int64_t Amount = I->getOperand(0).getImm();
if (I->getOpcode() == Mips::ADJCALLSTACKDOWN)
Amount = -Amount;
STI.getInstrInfo()->adjustStackPtr(Mips::SP, Amount, MBB, I);
}
MBB.erase(I);
}
bool
Mips16FrameLowering::hasReservedCallFrame(const MachineFunction &MF) const {
const MachineFrameInfo *MFI = MF.getFrameInfo();

4
lib/Target/Mips/Mips16FrameLowering.h
View File

@ -26,10 +26,6 @@ public:
void emitPrologue(MachineFunction &MF) const override;
void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const override;
void eliminateCallFramePseudoInstr(MachineFunction &MF,
MachineBasicBlock &MBB,
MachineBasicBlock::iterator I) const override;
bool spillCalleeSavedRegisters(MachineBasicBlock &MBB,
MachineBasicBlock::iterator MI,
const std::vector<CalleeSavedInfo> &CSI,

17
lib/Target/Mips/MipsFrameLowering.cpp
View File

@ -131,3 +131,20 @@ uint64_t MipsFrameLowering::estimateStackSize(const MachineFunction &MF) const {
return RoundUpToAlignment(Offset, getStackAlignment());
}
// Eliminate ADJCALLSTACKDOWN, ADJCALLSTACKUP pseudo instructions
void MipsFrameLowering::
eliminateCallFramePseudoInstr(MachineFunction &MF, MachineBasicBlock &MBB,
MachineBasicBlock::iterator I) const {
unsigned SP = STI.getABI().IsN64() ? Mips::SP_64 : Mips::SP;
if (!hasReservedCallFrame(MF)) {
int64_t Amount = I->getOperand(0).getImm();
if (I->getOpcode() == Mips::ADJCALLSTACKDOWN)
Amount = -Amount;
STI.getInstrInfo()->adjustStackPtr(SP, Amount, MBB, I);
}
MBB.erase(I);
}

5
lib/Target/Mips/MipsFrameLowering.h
View File

@ -32,6 +32,11 @@ public:
bool hasFP(const MachineFunction &MF) const override;
void
eliminateCallFramePseudoInstr(MachineFunction &MF,
MachineBasicBlock &MBB,
MachineBasicBlock::iterator I) const override;
protected:
uint64_t estimateStackSize(const MachineFunction &MF) const;
};

17
lib/Target/Mips/MipsSEFrameLowering.cpp
View File

@ -607,23 +607,6 @@ MipsSEFrameLowering::hasReservedCallFrame(const MachineFunction &MF) const {
!MFI->hasVarSizedObjects();
}
// Eliminate ADJCALLSTACKDOWN, ADJCALLSTACKUP pseudo instructions
void MipsSEFrameLowering::
eliminateCallFramePseudoInstr(MachineFunction &MF, MachineBasicBlock &MBB,
MachineBasicBlock::iterator I) const {
if (!hasReservedCallFrame(MF)) {
int64_t Amount = I->getOperand(0).getImm();
if (I->getOpcode() == Mips::ADJCALLSTACKDOWN)
Amount = -Amount;
unsigned SP = STI.isABI_N64() ? Mips::SP_64 : Mips::SP;
STI.getInstrInfo()->adjustStackPtr(SP, Amount, MBB, I);
}
MBB.erase(I);
}
void MipsSEFrameLowering::
processFunctionBeforeCalleeSavedScan(MachineFunction &MF,
RegScavenger *RS) const {

4
lib/Target/Mips/MipsSEFrameLowering.h
View File

@ -27,10 +27,6 @@ public:
void emitPrologue(MachineFunction &MF) const override;
void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const override;
void eliminateCallFramePseudoInstr(MachineFunction &MF,
MachineBasicBlock &MBB,
MachineBasicBlock::iterator I) const override;
bool spillCalleeSavedRegisters(MachineBasicBlock &MBB,
MachineBasicBlock::iterator MI,
const std::vector<CalleeSavedInfo> &CSI,