1 //===---- IRReader.cpp - Reader for LLVM IR files -------------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 #include "llvm/IRReader/IRReader.h"
11 #include "llvm/ADT/OwningPtr.h"
12 #include "llvm/Assembly/Parser.h"
13 #include "llvm/Bitcode/ReaderWriter.h"
14 #include "llvm/Support/MemoryBuffer.h"
15 #include "llvm/Support/SourceMgr.h"
16 #include "llvm/Support/system_error.h"
20 Module *llvm::getLazyIRModule(MemoryBuffer *Buffer, SMDiagnostic &Err,
21 LLVMContext &Context) {
22 if (isBitcode((const unsigned char *)Buffer->getBufferStart(),
23 (const unsigned char *)Buffer->getBufferEnd())) {
25 Module *M = getLazyBitcodeModule(Buffer, Context, &ErrMsg);
27 Err = SMDiagnostic(Buffer->getBufferIdentifier(), SourceMgr::DK_Error,
29 // ParseBitcodeFile does not take ownership of the Buffer in the
36 return ParseAssembly(Buffer, 0, Err, Context);
39 Module *llvm::getLazyIRFileModule(const std::string &Filename, SMDiagnostic &Err,
40 LLVMContext &Context) {
41 OwningPtr<MemoryBuffer> File;
42 if (error_code ec = MemoryBuffer::getFileOrSTDIN(Filename.c_str(), File)) {
43 Err = SMDiagnostic(Filename, SourceMgr::DK_Error,
44 "Could not open input file: " + ec.message());
48 return getLazyIRModule(File.take(), Err, Context);
51 Module *llvm::ParseIR(MemoryBuffer *Buffer, SMDiagnostic &Err,
52 LLVMContext &Context) {
53 if (isBitcode((const unsigned char *)Buffer->getBufferStart(),
54 (const unsigned char *)Buffer->getBufferEnd())) {
56 Module *M = ParseBitcodeFile(Buffer, Context, &ErrMsg);
58 Err = SMDiagnostic(Buffer->getBufferIdentifier(), SourceMgr::DK_Error,
60 // ParseBitcodeFile does not take ownership of the Buffer.
65 return ParseAssembly(Buffer, 0, Err, Context);
68 Module *llvm::ParseIRFile(const std::string &Filename, SMDiagnostic &Err,
69 LLVMContext &Context) {
70 OwningPtr<MemoryBuffer> File;
71 if (error_code ec = MemoryBuffer::getFileOrSTDIN(Filename.c_str(), File)) {
72 Err = SMDiagnostic(Filename, SourceMgr::DK_Error,
73 "Could not open input file: " + ec.message());
77 return ParseIR(File.take(), Err, Context);