mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2025-02-09 13:33:17 +00:00
bd26e6a006
When debugging LTO issues with ld64, we use -save-temps to save the merged optimized bitcode file, then invoke ld64 again on the single bitcode file to speed up debugging code generation passes and ld64 stuff after code generation. llvm linking a single bitcode file via lto_codegen_add_module will generate a different bitcode file from the single input. With the newly-added lto_codegen_set_module, we can make sure the destination module is the same as the input. lto_codegen_set_module will transfer the ownship of the module to code generator. rdar://19024554 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230290 91177308-0d34-0410-b5e6-96231b3b80d8
93 lines
2.8 KiB
C++
93 lines
2.8 KiB
C++
//===- Linker.h - Module Linker Interface -----------------------*- C++ -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_LINKER_LINKER_H
|
|
#define LLVM_LINKER_LINKER_H
|
|
|
|
#include "llvm/ADT/ArrayRef.h"
|
|
#include "llvm/ADT/DenseMap.h"
|
|
#include "llvm/ADT/DenseSet.h"
|
|
#include "llvm/IR/DiagnosticInfo.h"
|
|
|
|
namespace llvm {
|
|
class Module;
|
|
class StructType;
|
|
class Type;
|
|
|
|
/// This class provides the core functionality of linking in LLVM. It keeps a
|
|
/// pointer to the merged module so far. It doesn't take ownership of the
|
|
/// module since it is assumed that the user of this class will want to do
|
|
/// something with it after the linking.
|
|
class Linker {
|
|
public:
|
|
struct StructTypeKeyInfo {
|
|
struct KeyTy {
|
|
ArrayRef<Type *> ETypes;
|
|
bool IsPacked;
|
|
KeyTy(ArrayRef<Type *> E, bool P);
|
|
KeyTy(const StructType *ST);
|
|
bool operator==(const KeyTy &that) const;
|
|
bool operator!=(const KeyTy &that) const;
|
|
};
|
|
static StructType *getEmptyKey();
|
|
static StructType *getTombstoneKey();
|
|
static unsigned getHashValue(const KeyTy &Key);
|
|
static unsigned getHashValue(const StructType *ST);
|
|
static bool isEqual(const KeyTy &LHS, const StructType *RHS);
|
|
static bool isEqual(const StructType *LHS, const StructType *RHS);
|
|
};
|
|
|
|
typedef DenseSet<StructType *, StructTypeKeyInfo> NonOpaqueStructTypeSet;
|
|
typedef DenseSet<StructType *> OpaqueStructTypeSet;
|
|
|
|
struct IdentifiedStructTypeSet {
|
|
// The set of opaque types is the composite module.
|
|
OpaqueStructTypeSet OpaqueStructTypes;
|
|
|
|
// The set of identified but non opaque structures in the composite module.
|
|
NonOpaqueStructTypeSet NonOpaqueStructTypes;
|
|
|
|
void addNonOpaque(StructType *Ty);
|
|
void addOpaque(StructType *Ty);
|
|
StructType *findNonOpaque(ArrayRef<Type *> ETypes, bool IsPacked);
|
|
bool hasType(StructType *Ty);
|
|
};
|
|
|
|
Linker(Module *M, DiagnosticHandlerFunction DiagnosticHandler);
|
|
Linker(Module *M);
|
|
~Linker();
|
|
|
|
Module *getModule() const { return Composite; }
|
|
void deleteModule();
|
|
|
|
/// \brief Link \p Src into the composite. The source is destroyed.
|
|
/// Returns true on error.
|
|
bool linkInModule(Module *Src);
|
|
|
|
/// \brief Set the composite to the passed-in module.
|
|
void setModule(Module *Dst);
|
|
|
|
static bool LinkModules(Module *Dest, Module *Src,
|
|
DiagnosticHandlerFunction DiagnosticHandler);
|
|
|
|
static bool LinkModules(Module *Dest, Module *Src);
|
|
|
|
private:
|
|
void init(Module *M, DiagnosticHandlerFunction DiagnosticHandler);
|
|
Module *Composite;
|
|
|
|
IdentifiedStructTypeSet IdentifiedStructTypes;
|
|
|
|
DiagnosticHandlerFunction DiagnosticHandler;
|
|
};
|
|
|
|
} // End llvm namespace
|
|
|
|
#endif
|