-//===-- MBlazeMachineFunctionInfo.h - Private data ----------------*- C++ -*-=//
+//===-- MBlazeMachineFunctionInfo.h - Private data --------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
#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"
#include "llvm/CodeGen/MachineFrameInfo.h"
/// MBlazeFunctionInfo - This class is derived from MachineFunction private
/// MBlaze target-specific information for each MachineFunction.
class MBlazeFunctionInfo : public MachineFunctionInfo {
+ virtual void anchor();
-private:
/// Holds for each function where on the stack the Frame Pointer must be
/// saved. This is used on Prologue and Epilogue to emit FP save/restore
int FPStackOffset;
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));