mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-08-21 03:29:40 +00:00
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14436 91177308-0d34-0410-b5e6-96231b3b80d8
125 lines
4.1 KiB
C++
125 lines
4.1 KiB
C++
//===-- llvm/CodeGen/MachineFunctionInfo.h ----------------------*- C++ -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file was developed by the LLVM research group and is distributed under
|
|
// the University of Illinois Open Source License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This class keeps track of information about the stack frame and about the
|
|
// per-function constant pool.
|
|
//
|
|
// FIXME: This class is completely SparcV9 specific. Do not use it for future
|
|
// targets. This file will be eliminated in future versions of LLVM.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_CODEGEN_MACHINEFUNCTIONINFO_H
|
|
#define LLVM_CODEGEN_MACHINEFUNCTIONINFO_H
|
|
|
|
#include "llvm/CodeGen/MachineCodeForInstruction.h"
|
|
#include "Support/HashExtras.h"
|
|
#include "Support/hash_set"
|
|
|
|
namespace llvm {
|
|
|
|
class MachineFunction;
|
|
class Constant;
|
|
class Type;
|
|
|
|
class MachineFunctionInfo {
|
|
hash_set<const Constant*> constantsForConstPool;
|
|
hash_map<const Value*, int> offsets;
|
|
|
|
unsigned staticStackSize;
|
|
unsigned automaticVarsSize;
|
|
unsigned regSpillsSize;
|
|
unsigned maxOptionalArgsSize;
|
|
unsigned maxOptionalNumArgs;
|
|
unsigned currentTmpValuesSize;
|
|
unsigned maxTmpValuesSize;
|
|
bool compiledAsLeaf;
|
|
bool spillsAreaFrozen;
|
|
bool automaticVarsAreaFrozen;
|
|
|
|
MachineFunction &MF;
|
|
public:
|
|
hash_map<const Instruction*, MachineCodeForInstruction> MCFIEntries;
|
|
|
|
MachineFunctionInfo(MachineFunction &mf) : MF(mf) {
|
|
staticStackSize = automaticVarsSize = regSpillsSize = 0;
|
|
maxOptionalArgsSize = maxOptionalNumArgs = currentTmpValuesSize = 0;
|
|
maxTmpValuesSize = 0;
|
|
compiledAsLeaf = spillsAreaFrozen = automaticVarsAreaFrozen = false;
|
|
}
|
|
|
|
/// CalculateArgSize - Call this method to fill in the maxOptionalArgsSize &
|
|
/// staticStackSize fields...
|
|
///
|
|
void CalculateArgSize();
|
|
|
|
//
|
|
// Accessors for global information about generated code for a method.
|
|
//
|
|
bool isCompiledAsLeafMethod() const { return compiledAsLeaf; }
|
|
unsigned getStaticStackSize() const { return staticStackSize; }
|
|
unsigned getAutomaticVarsSize() const { return automaticVarsSize; }
|
|
unsigned getRegSpillsSize() const { return regSpillsSize; }
|
|
unsigned getMaxOptionalArgsSize() const { return maxOptionalArgsSize;}
|
|
unsigned getMaxOptionalNumArgs() const { return maxOptionalNumArgs;}
|
|
const hash_set<const Constant*> &getConstantPoolValues() const {
|
|
return constantsForConstPool;
|
|
}
|
|
|
|
//
|
|
// Modifiers used during code generation
|
|
//
|
|
void initializeFrameLayout ();
|
|
|
|
void addToConstantPool (const Constant* constVal) {
|
|
constantsForConstPool.insert(constVal);
|
|
}
|
|
|
|
void markAsLeafMethod() { compiledAsLeaf = true; }
|
|
|
|
int computeOffsetforLocalVar (const Value* local,
|
|
unsigned& getPaddedSize,
|
|
unsigned sizeToUse = 0);
|
|
int allocateLocalVar (const Value* local,
|
|
unsigned sizeToUse = 0);
|
|
|
|
int allocateSpilledValue (const Type* type);
|
|
int pushTempValue (unsigned size);
|
|
void popAllTempValues ();
|
|
|
|
void freezeSpillsArea () { spillsAreaFrozen = true; }
|
|
void freezeAutomaticVarsArea () { automaticVarsAreaFrozen=true; }
|
|
|
|
private:
|
|
void incrementAutomaticVarsSize(int incr) {
|
|
automaticVarsSize+= incr;
|
|
staticStackSize += incr;
|
|
}
|
|
void incrementRegSpillsSize(int incr) {
|
|
regSpillsSize+= incr;
|
|
staticStackSize += incr;
|
|
}
|
|
void incrementTmpAreaSize(int incr) {
|
|
currentTmpValuesSize += incr;
|
|
if (maxTmpValuesSize < currentTmpValuesSize)
|
|
{
|
|
staticStackSize += currentTmpValuesSize - maxTmpValuesSize;
|
|
maxTmpValuesSize = currentTmpValuesSize;
|
|
}
|
|
}
|
|
void resetTmpAreaSize() {
|
|
currentTmpValuesSize = 0;
|
|
}
|
|
int allocateOptionalArg(const Type* type);
|
|
};
|
|
|
|
} // End llvm namespace
|
|
|
|
#endif
|