mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2025-01-20 12:31:40 +00:00
d4fd397805
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4787 91177308-0d34-0410-b5e6-96231b3b80d8
70 lines
2.7 KiB
C++
70 lines
2.7 KiB
C++
//===- Cloning.h - Clone various parts of LLVM programs ---------*- C++ -*-===//
|
|
//
|
|
// This file defines various functions that are used to clone chunks of LLVM
|
|
// code for various purposes. This varies from copying whole modules into new
|
|
// modules, to cloning functions with different arguments, to inlining
|
|
// functions, to copying basic blocks to support loop unrolling or superblock
|
|
// formation, etc.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_TRANSFORMS_UTIlS_CLONING_H
|
|
#define LLVM_TRANSFORMS_UTIlS_CLONING_H
|
|
|
|
#include <vector>
|
|
#include <map>
|
|
class Module;
|
|
class Function;
|
|
class BasicBlock;
|
|
class Value;
|
|
class CallInst;
|
|
class ReturnInst;
|
|
|
|
/// CloneModule - Return an exact copy of the specified module
|
|
///
|
|
Module *CloneModule(const Module *M);
|
|
|
|
/// CloneFunction - Return a copy of the specified function, but without
|
|
/// embedding the function into another module. Also, any references specified
|
|
/// in the ValueMap are changed to refer to their mapped value instead of the
|
|
/// original one. If any of the arguments to the function are in the ValueMap,
|
|
/// the arguments are deleted from the resultant function. The ValueMap is
|
|
/// updated to include mappings from all of the instructions and basicblocks in
|
|
/// the function from their old to new values.
|
|
///
|
|
Function *CloneFunction(const Function *F,
|
|
std::map<const Value*, Value*> &ValueMap);
|
|
|
|
/// CloneFunction - Version of the function that doesn't need the ValueMap.
|
|
///
|
|
inline Function *CloneFunction(const Function *F) {
|
|
std::map<const Value*, Value*> ValueMap;
|
|
return CloneFunction(F, ValueMap);
|
|
}
|
|
|
|
// Clone OldFunc into NewFunc, transforming the old arguments into references to
|
|
// ArgMap values. Note that if NewFunc already has basic blocks, the ones
|
|
// cloned into it will be added to the end of the function. This function fills
|
|
// in a list of return instructions, and can optionally append the specified
|
|
// suffix to all values cloned.
|
|
//
|
|
void CloneFunctionInto(Function *NewFunc, const Function *OldFunc,
|
|
std::map<const Value*, Value*> &ValueMap,
|
|
std::vector<ReturnInst*> &Returns,
|
|
const char *NameSuffix = "");
|
|
|
|
|
|
// InlineFunction - This function forcibly inlines the called function into the
|
|
// basic block of the caller. This returns true if it is not possible to inline
|
|
// this call. The program is still in a well defined state if this occurs
|
|
// though.
|
|
//
|
|
// Note that this only does one level of inlining. For example, if the
|
|
// instruction 'call B' is inlined, and 'B' calls 'C', then the call to 'C' now
|
|
// exists in the instruction stream. Similiarly this will inline a recursive
|
|
// function by one level.
|
|
//
|
|
bool InlineFunction(CallInst *C);
|
|
|
|
#endif
|