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https://github.com/c64scene-ar/llvm-6502.git
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cfb320f5f9
Now that we hava a convinient place to keep it, remeber the set of identified structs as we merge modules. This speeds up the linking of all the bitcode files in clang with the gold plugin and -plugin-opt=emit-llvm (i.e., link only, no codegen) from 5:25 minutes to 13.6 seconds! Patch by Xiaofei Wan! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181104 91177308-0d34-0410-b5e6-96231b3b80d8
58 lines
1.7 KiB
C++
58 lines
1.7 KiB
C++
//===- llvm/Linker.h - Module Linker Interface ------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LINKER_H
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#define LLVM_LINKER_H
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#include "llvm/ADT/SmallPtrSet.h"
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#include <string>
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namespace llvm {
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class Module;
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class StringRef;
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class StructType;
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/// This class provides the core functionality of linking in LLVM. It keeps a
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/// pointer to the merged module so far. It doesn't take ownership of the
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/// module since it is assumed that the user of this class will want to do
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/// something with it after the linking.
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class Linker {
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public:
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enum LinkerMode {
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DestroySource = 0, // Allow source module to be destroyed.
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PreserveSource = 1 // Preserve the source module.
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};
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Linker(Module *M);
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~Linker();
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Module *getModule() const { return Composite; }
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/// \brief Link \p Src into the composite. The source is destroyed if
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/// \p Mode is DestroySource and preserved if it is PreserveSource.
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/// If \p ErrorMsg is not null, information about any error is written
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/// to it.
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/// Returns true on error.
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bool linkInModule(Module *Src, unsigned Mode, std::string *ErrorMsg);
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bool linkInModule(Module *Src, std::string *ErrorMsg) {
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return linkInModule(Src, Linker::DestroySource, ErrorMsg);
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}
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static bool LinkModules(Module *Dest, Module *Src, unsigned Mode,
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std::string *ErrorMsg);
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private:
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Module *Composite;
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SmallPtrSet<StructType*, 32> IdentifiedStructTypes;
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};
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} // End llvm namespace
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#endif
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