| //===---- IRReader.cpp - Reader for LLVM IR files -------------------------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "llvm/IRReader/IRReader.h" |
| #include "llvm/ADT/OwningPtr.h" |
| #include "llvm/Assembly/Parser.h" |
| #include "llvm/Bitcode/ReaderWriter.h" |
| #include "llvm/Support/MemoryBuffer.h" |
| #include "llvm/Support/SourceMgr.h" |
| #include "llvm/Support/system_error.h" |
| #include "llvm/Support/Timer.h" |
| |
| using namespace llvm; |
| |
| namespace llvm { |
| extern bool TimePassesIsEnabled; |
| } |
| |
| static const char *TimeIRParsingGroupName = "LLVM IR Parsing"; |
| static const char *TimeIRParsingName = "Parse IR"; |
| |
| |
| Module *llvm::getLazyIRModule(MemoryBuffer *Buffer, SMDiagnostic &Err, |
| LLVMContext &Context) { |
| if (isBitcode((const unsigned char *)Buffer->getBufferStart(), |
| (const unsigned char *)Buffer->getBufferEnd())) { |
| std::string ErrMsg; |
| Module *M = getLazyBitcodeModule(Buffer, Context, &ErrMsg); |
| if (M == 0) { |
| Err = SMDiagnostic(Buffer->getBufferIdentifier(), SourceMgr::DK_Error, |
| ErrMsg); |
| // ParseBitcodeFile does not take ownership of the Buffer in the |
| // case of an error. |
| delete Buffer; |
| } |
| return M; |
| } |
| |
| return ParseAssembly(Buffer, 0, Err, Context); |
| } |
| |
| Module *llvm::getLazyIRFileModule(const std::string &Filename, SMDiagnostic &Err, |
| LLVMContext &Context) { |
| OwningPtr<MemoryBuffer> File; |
| if (error_code ec = MemoryBuffer::getFileOrSTDIN(Filename.c_str(), File)) { |
| Err = SMDiagnostic(Filename, SourceMgr::DK_Error, |
| "Could not open input file: " + ec.message()); |
| return 0; |
| } |
| |
| return getLazyIRModule(File.take(), Err, Context); |
| } |
| |
| Module *llvm::ParseIR(MemoryBuffer *Buffer, SMDiagnostic &Err, |
| LLVMContext &Context) { |
| NamedRegionTimer T(TimeIRParsingName, TimeIRParsingGroupName, |
| TimePassesIsEnabled); |
| if (isBitcode((const unsigned char *)Buffer->getBufferStart(), |
| (const unsigned char *)Buffer->getBufferEnd())) { |
| std::string ErrMsg; |
| Module *M = ParseBitcodeFile(Buffer, Context, &ErrMsg); |
| if (M == 0) |
| Err = SMDiagnostic(Buffer->getBufferIdentifier(), SourceMgr::DK_Error, |
| ErrMsg); |
| // ParseBitcodeFile does not take ownership of the Buffer. |
| delete Buffer; |
| return M; |
| } |
| |
| return ParseAssembly(Buffer, 0, Err, Context); |
| } |
| |
| Module *llvm::ParseIRFile(const std::string &Filename, SMDiagnostic &Err, |
| LLVMContext &Context) { |
| OwningPtr<MemoryBuffer> File; |
| if (error_code ec = MemoryBuffer::getFileOrSTDIN(Filename.c_str(), File)) { |
| Err = SMDiagnostic(Filename, SourceMgr::DK_Error, |
| "Could not open input file: " + ec.message()); |
| return 0; |
| } |
| |
| return ParseIR(File.take(), Err, Context); |
| } |