mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-08-25 00:29:20 +00:00
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@186371 91177308-0d34-0410-b5e6-96231b3b80d8
90 lines
3.0 KiB
C++
90 lines
3.0 KiB
C++
//===---- 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 *const TimeIRParsingGroupName = "LLVM IR Parsing";
|
|
static const char *const 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, 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, File)) {
|
|
Err = SMDiagnostic(Filename, SourceMgr::DK_Error,
|
|
"Could not open input file: " + ec.message());
|
|
return 0;
|
|
}
|
|
|
|
return ParseIR(File.take(), Err, Context);
|
|
}
|