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//===-LTO.cpp - LLVM Link Time Optimizer ----------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file implements functions and classes used to support LTO.
//
//===----------------------------------------------------------------------===//
#include "llvm/LTO/LTO.h"
#include "llvm/Bitcode/ReaderWriter.h"
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/SourceMgr.h"
#include "llvm/Support/raw_ostream.h"
namespace llvm {
// Simple helper to load a module from bitcode
std::unique_ptr<Module> loadModuleFromBuffer(const MemoryBufferRef &Buffer,
LLVMContext &Context, bool Lazy) {
SMDiagnostic Err;
ErrorOr<std::unique_ptr<Module>> ModuleOrErr(nullptr);
if (Lazy) {
ModuleOrErr =
getLazyBitcodeModule(MemoryBuffer::getMemBuffer(Buffer, false), Context,
/* ShouldLazyLoadMetadata */ Lazy);
} else {
ModuleOrErr = parseBitcodeFile(Buffer, Context);
}
if (std::error_code EC = ModuleOrErr.getError()) {
Err = SMDiagnostic(Buffer.getBufferIdentifier(), SourceMgr::DK_Error,
EC.message());
Err.print("ThinLTO", errs());
report_fatal_error("Can't load module, abort.");
}
return std::move(ModuleOrErr.get());
}
}
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