static void replaceFrameIndexes(MachineFunction &MF,
SmallVector<std::pair<int,int64_t>, 16> &FR) {
MachineFrameInfo *MFI = MF.getFrameInfo();
+ MBlazeFunctionInfo *MBlazeFI = MF.getInfo<MBlazeFunctionInfo>();
const SmallVector<std::pair<int,int64_t>, 16>::iterator FRB = FR.begin();
const SmallVector<std::pair<int,int64_t>, 16>::iterator FRE = FR.end();
for (; FRI != FRE; ++FRI) {
MFI->RemoveStackObject(FRI->first);
int NFI = MFI->CreateFixedObject(4, FRI->second, true);
+ MBlazeFI->recordReplacement(FRI->first, NFI);
for (MachineFunction::iterator MB=MF.begin(), ME=MF.end(); MB!=ME; ++MB) {
MachineBasicBlock::iterator MBB = MB->begin();
DEBUG(dbgs() << "Aligned Frame Size: " << FrameSize << "\n" );
}
+int MBlazeFrameInfo::getFrameIndexOffset(const MachineFunction &MF, int FI)
+ const {
+ const MBlazeFunctionInfo *MBlazeFI = MF.getInfo<MBlazeFunctionInfo>();
+ if (MBlazeFI->hasReplacement(FI))
+ FI = MBlazeFI->getReplacement(FI);
+ return TargetFrameInfo::getFrameIndexOffset(MF,FI);
+}
+
// hasFP - Return true if the specified function should have a dedicated frame
// pointer register. This is true if the function has variable sized allocas or
// if frame pointer elimination is disabled.
bool hasFP(const MachineFunction &MF) const;
+ int getFrameIndexOffset(const MachineFunction &MF, int FI) const;
+
virtual void processFunctionBeforeCalleeSavedScan(MachineFunction &MF,
RegScavenger *RS) const;
};
#ifndef MBLAZE_MACHINE_FUNCTION_INFO_H
#define MBLAZE_MACHINE_FUNCTION_INFO_H
+#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/VectorExtras.h"
#include "llvm/CodeGen/MachineFunction.h"
SmallVector<MBlazeFIHolder, 4> FnStoreVarArgs;
bool HasStoreVarArgs;
+ // When determining the final stack layout some of the frame indexes may
+ // be replaced by new frame indexes that reside in the caller's stack
+ // frame. The replacements are recorded in this structure.
+ DenseMap<int,int> FIReplacements;
+
/// SRetReturnReg - Some subtargets require that sret lowering includes
/// returning the value of the returned struct in a register. This field
/// holds the virtual register into which the sret argument is passed.
const SmallVector<int, 16>& getLiveIn() const { return LiveInFI; }
+ void recordReplacement(int OFI, int NFI) {
+ FIReplacements.insert(std::make_pair(OFI,NFI));
+ }
+
+ bool hasReplacement(int OFI) const {
+ return FIReplacements.find(OFI) != FIReplacements.end();
+ }
+
+ int getReplacement(int OFI) const {
+ return FIReplacements.lookup(OFI);
+ }
+
void recordLoadArgsFI(int FI, int SPOffset) {
if (!HasLoadArgs) HasLoadArgs=true;
FnLoadArgs.push_back(MBlazeFIHolder(FI, SPOffset));