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Added support for PIC code with "explicit relocations" *only*.

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Removed all macro code for PIC (goodbye "la").
Support tested with shootout bench.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43697 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Bruno Cardoso Lopes
2007-11-05 03:02:32 +00:00
parent 90a52145ab
commit c7db5618f9
9 changed files with 214 additions and 103 deletions
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22
lib/Target/Mips/MipsRegisterInfo.cpp
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@@ -203,6 +203,12 @@ foldMemoryOperand(MachineInstr* MI, unsigned OpNum, int FI) const
return NewMI;
}
MachineInstr *MipsRegisterInfo::
foldMemoryOperand(MachineInstr* MI, unsigned OpNum,
MachineInstr* LoadMI) const {
return NULL;
}
//===----------------------------------------------------------------------===//
//
// Callee Saved Registers methods
@@ -325,7 +331,7 @@ void MipsRegisterInfo::
eliminateFrameIndex(MachineBasicBlock::iterator II, int SPAdj,
RegScavenger *RS) const
{
MachineInstr &MI = *II;
MachineInstr &MI = *II;
MachineFunction &MF = *MI.getParent()->getParent();
unsigned i = 0;
@@ -359,7 +365,7 @@ eliminateFrameIndex(MachineBasicBlock::iterator II, int SPAdj,
#endif
MI.getOperand(i-1).ChangeToImmediate(Offset);
MI.getOperand(i).ChangeToRegister(getFrameRegister(MF),false);
MI.getOperand(i).ChangeToRegister(getFrameRegister(MF), false);
}
void MipsRegisterInfo::
@@ -453,7 +459,6 @@ emitPrologue(MachineFunction &MF) const
if ((isPIC) && (MFI->hasCalls()))
BuildMI(MBB, MBBI, TII.get(Mips::CPRESTORE))
.addImm(MipsFI->getGPStackOffset());
}
void MipsRegisterInfo::
@@ -498,6 +503,17 @@ emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const
void MipsRegisterInfo::
processFunctionBeforeFrameFinalized(MachineFunction &MF) const {
// Set the SPOffset on the FI where GP must be saved/loaded.
MachineFrameInfo *MFI = MF.getFrameInfo();
if (MFI->hasCalls()) {
MipsFunctionInfo *MipsFI = MF.getInfo<MipsFunctionInfo>();
#ifndef NDEBUG
DOUT << "processFunctionBeforeFrameFinalized\n";
DOUT << "GPOffset :" << MipsFI->getGPStackOffset() << "\n";
DOUT << "FI :" << MipsFI->getGPFI() << "\n";
#endif
MFI->setObjectOffset(MipsFI->getGPFI(), MipsFI->getGPStackOffset());
}
}
unsigned MipsRegisterInfo::