mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2025-10-31 08:16:47 +00:00
f2868ce228
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@1660 91177308-0d34-0410-b5e6-96231b3b80d8
113 lines
4.2 KiB
C++
113 lines
4.2 KiB
C++
//===-- llvm/CodeGen/MachineCodeForMethod.h ----------------------*- C++ -*--=//
|
|
//
|
|
// Purpose:
|
|
// Collect native machine code information for a method.
|
|
// This allows target-specific information about the generated code
|
|
// to be stored with each method.
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_CODEGEN_MACHINECODEFORMETHOD_H
|
|
#define LLVM_CODEGEN_MACHINECODEFORMETHOD_H
|
|
|
|
#include "llvm/Annotation.h"
|
|
#include "Support/NonCopyable.h"
|
|
#include "Support/HashExtras.h"
|
|
#include <ext/hash_set>
|
|
class Value;
|
|
class Method;
|
|
class Constant;
|
|
class Type;
|
|
class TargetMachine;
|
|
|
|
|
|
class MachineCodeForMethod : private Annotation {
|
|
const Method* method;
|
|
bool compiledAsLeaf;
|
|
unsigned staticStackSize;
|
|
unsigned automaticVarsSize;
|
|
unsigned regSpillsSize;
|
|
unsigned currentOptionalArgsSize;
|
|
unsigned maxOptionalArgsSize;
|
|
unsigned currentTmpValuesSize;
|
|
std::hash_set<const Constant*> constantsForConstPool;
|
|
std::hash_map<const Value*, int> offsets;
|
|
// hash_map<const Value*, int> offsetsFromSP;
|
|
|
|
public:
|
|
/*ctor*/ MachineCodeForMethod(const Method* method,
|
|
const TargetMachine& target);
|
|
|
|
// The next two methods are used to construct and to retrieve
|
|
// the MachineCodeForMethod object for the given method.
|
|
// construct() -- Allocates and initializes for a given method and target
|
|
// get() -- Returns a handle to the object.
|
|
// This should not be called before "construct()"
|
|
// for a given Method.
|
|
//
|
|
static MachineCodeForMethod& construct(const Method *method,
|
|
const TargetMachine &target);
|
|
static void destruct(const Method *M);
|
|
static MachineCodeForMethod& get(const Method* method);
|
|
|
|
//
|
|
// Accessors for global information about generated code for a method.
|
|
//
|
|
inline bool isCompiledAsLeafMethod() const { return compiledAsLeaf; }
|
|
inline unsigned getStaticStackSize() const { return staticStackSize; }
|
|
inline unsigned getAutomaticVarsSize() const { return automaticVarsSize; }
|
|
inline unsigned getRegSpillsSize() const { return regSpillsSize; }
|
|
inline unsigned getMaxOptionalArgsSize() const { return maxOptionalArgsSize;}
|
|
inline unsigned getCurrentOptionalArgsSize() const
|
|
{ return currentOptionalArgsSize;}
|
|
inline const std::hash_set<const Constant*>&
|
|
getConstantPoolValues() const {return constantsForConstPool;}
|
|
|
|
//
|
|
// Modifiers used during code generation
|
|
//
|
|
void initializeFrameLayout (const TargetMachine& target);
|
|
|
|
void addToConstantPool (const Constant* constVal)
|
|
{ constantsForConstPool.insert(constVal); }
|
|
|
|
inline void markAsLeafMethod() { compiledAsLeaf = true; }
|
|
|
|
int allocateLocalVar (const TargetMachine& target,
|
|
const Value* local,
|
|
unsigned int size = 0);
|
|
|
|
int allocateSpilledValue (const TargetMachine& target,
|
|
const Type* type);
|
|
|
|
int allocateOptionalArg (const TargetMachine& target,
|
|
const Type* type);
|
|
|
|
void resetOptionalArgs (const TargetMachine& target);
|
|
|
|
int pushTempValue (const TargetMachine& target,
|
|
unsigned int size);
|
|
|
|
void popAllTempValues (const TargetMachine& target);
|
|
|
|
int getOffset (const Value* val) const;
|
|
|
|
// int getOffsetFromFP (const Value* val) const;
|
|
|
|
void dump () const;
|
|
|
|
private:
|
|
inline void incrementAutomaticVarsSize(int incr) {
|
|
automaticVarsSize+= incr;
|
|
staticStackSize += incr;
|
|
}
|
|
inline void incrementRegSpillsSize(int incr) {
|
|
regSpillsSize+= incr;
|
|
staticStackSize += incr;
|
|
}
|
|
inline void incrementCurrentOptionalArgsSize(int incr) {
|
|
currentOptionalArgsSize+= incr; // stack size already includes this!
|
|
}
|
|
};
|
|
|
|
#endif
|