mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-10-24 13:33:37 +02:00
0dce8d436c
Summary: Second patch split out from http://reviews.llvm.org/D14752. Maps metadata as a post-pass from each module when importing complete, suturing up final metadata to the temporary metadata left on the imported instructions. This entails saving the mapping from bitcode value id to temporary metadata in the importing pass, and from bitcode value id to final metadata during the metadata linking postpass. Depends on D14825. Reviewers: dexonsmith, joker.eph Subscribers: davidxl, llvm-commits, joker.eph Differential Revision: http://reviews.llvm.org/D14838 llvm-svn: 255909
78 lines
2.6 KiB
C++
78 lines
2.6 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/IR/FunctionInfo.h"
|
|
#include "llvm/Linker/IRMover.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 {
|
|
IRMover Mover;
|
|
|
|
public:
|
|
enum Flags {
|
|
None = 0,
|
|
OverrideFromSrc = (1 << 0),
|
|
LinkOnlyNeeded = (1 << 1),
|
|
InternalizeLinkedSymbols = (1 << 2)
|
|
};
|
|
|
|
Linker(Module &M);
|
|
|
|
/// \brief Link \p Src into the composite.
|
|
///
|
|
/// Passing OverrideSymbols as true will have symbols from Src
|
|
/// shadow those in the Dest.
|
|
/// For ThinLTO function importing/exporting the \p FunctionInfoIndex
|
|
/// is passed. If \p FunctionsToImport is provided, only the functions that
|
|
/// are part of the set will be imported from the source module.
|
|
/// The \p ValIDToTempMDMap is populated by the linker when function
|
|
/// importing is performed.
|
|
///
|
|
/// Returns true on error.
|
|
bool linkInModule(std::unique_ptr<Module> Src, unsigned Flags = Flags::None,
|
|
const FunctionInfoIndex *Index = nullptr,
|
|
DenseSet<const GlobalValue *> *FunctionsToImport = nullptr,
|
|
DenseMap<unsigned, MDNode *> *ValIDToTempMDMap = nullptr);
|
|
|
|
/// This exists to implement the deprecated LLVMLinkModules C api. Don't use
|
|
/// for anything else.
|
|
bool linkInModuleForCAPI(Module &Src);
|
|
|
|
static bool linkModules(Module &Dest, std::unique_ptr<Module> Src,
|
|
unsigned Flags = Flags::None);
|
|
|
|
/// \brief Link metadata from \p Src into the composite. The source is
|
|
/// destroyed.
|
|
///
|
|
/// The \p ValIDToTempMDMap sound have been populated earlier during function
|
|
/// importing from \p Src.
|
|
bool linkInMetadata(Module &Src,
|
|
DenseMap<unsigned, MDNode *> *ValIDToTempMDMap);
|
|
};
|
|
|
|
/// Create a new module with exported local functions renamed and promoted
|
|
/// for ThinLTO.
|
|
std::unique_ptr<Module> renameModuleForThinLTO(std::unique_ptr<Module> M,
|
|
const FunctionInfoIndex *Index);
|
|
|
|
} // End llvm namespace
|
|
|
|
#endif
|