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Move more PEI-related hooks to TFI

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@120229 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Anton Korobeynikov
2010-11-27 23:05:25 +00:00
parent cd775ceff0
commit 94c5ae0875
31 changed files with 796 additions and 793 deletions
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44
lib/Target/XCore/XCoreFrameInfo.cpp
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@ -22,6 +22,7 @@
#include "llvm/CodeGen/MachineInstrBuilder.h"
#include "llvm/CodeGen/MachineModuleInfo.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/CodeGen/RegisterScavenging.h"
#include "llvm/Target/TargetData.h"
#include "llvm/Target/TargetOptions.h"
#include "llvm/Support/ErrorHandling.h"
@ -336,3 +337,46 @@ bool XCoreFrameInfo::restoreCalleeSavedRegisters(MachineBasicBlock &MBB,
}
return true;
}
void
XCoreFrameInfo::processFunctionBeforeCalleeSavedScan(MachineFunction &MF,
RegScavenger *RS) const {
MachineFrameInfo *MFI = MF.getFrameInfo();
const TargetRegisterInfo *RegInfo = MF.getTarget().getRegisterInfo();
bool LRUsed = MF.getRegInfo().isPhysRegUsed(XCore::LR);
const TargetRegisterClass *RC = XCore::GRRegsRegisterClass;
XCoreFunctionInfo *XFI = MF.getInfo<XCoreFunctionInfo>();
if (LRUsed) {
MF.getRegInfo().setPhysRegUnused(XCore::LR);
bool isVarArg = MF.getFunction()->isVarArg();
int FrameIdx;
if (! isVarArg) {
// A fixed offset of 0 allows us to save / restore LR using entsp / retsp.
FrameIdx = MFI->CreateFixedObject(RC->getSize(), 0, true);
} else {
FrameIdx = MFI->CreateStackObject(RC->getSize(), RC->getAlignment(),
false);
}
XFI->setUsesLR(FrameIdx);
XFI->setLRSpillSlot(FrameIdx);
}
if (RegInfo->requiresRegisterScavenging(MF)) {
// Reserve a slot close to SP or frame pointer.
RS->setScavengingFrameIndex(MFI->CreateStackObject(RC->getSize(),
RC->getAlignment(),
false));
}
if (hasFP(MF)) {
// A callee save register is used to hold the FP.
// This needs saving / restoring in the epilogue / prologue.
XFI->setFPSpillSlot(MFI->CreateStackObject(RC->getSize(),
RC->getAlignment(),
false));
}
}
void XCoreFrameInfo::
processFunctionBeforeFrameFinalized(MachineFunction &MF) const {
}