mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2025-02-14 17:34:41 +00:00
f0b0f1f9d9
-time-ir-parsing flag This breaks the layering of the Support library. We can't add an implementation side to IRReader because it refers directly to entities only accessible as part of the IR, AsmParser, and BitcodeReader libraries. It can only be used in a context where all of those libraries will be available. We'll need to find some other way to get this functionality, and hopefully solve the long-standing layering problem of IRReader.h... git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177695 91177308-0d34-0410-b5e6-96231b3b80d8
113 lines
4.2 KiB
C++
113 lines
4.2 KiB
C++
//===---- llvm/Support/IRReader.h - Reader for LLVM IR files ----*- C++ -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file defines functions for reading LLVM IR. They support both
|
|
// Bitcode and Assembly, automatically detecting the input format.
|
|
//
|
|
// These functions must be defined in a header file in order to avoid
|
|
// library dependencies, since they reference both Bitcode and Assembly
|
|
// functions.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_SUPPORT_IRREADER_H
|
|
#define LLVM_SUPPORT_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"
|
|
|
|
namespace llvm {
|
|
|
|
/// If the given MemoryBuffer holds a bitcode image, return a Module for it
|
|
/// which does lazy deserialization of function bodies. Otherwise, attempt to
|
|
/// parse it as LLVM Assembly and return a fully populated Module. This
|
|
/// function *always* takes ownership of the given MemoryBuffer.
|
|
inline Module *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);
|
|
}
|
|
|
|
/// If the given file holds a bitcode image, return a Module
|
|
/// for it which does lazy deserialization of function bodies. Otherwise,
|
|
/// attempt to parse it as LLVM Assembly and return a fully populated
|
|
/// Module.
|
|
inline Module *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);
|
|
}
|
|
|
|
/// If the given MemoryBuffer holds a bitcode image, return a Module
|
|
/// for it. Otherwise, attempt to parse it as LLVM Assembly and return
|
|
/// a Module for it. This function *always* takes ownership of the given
|
|
/// MemoryBuffer.
|
|
inline Module *ParseIR(MemoryBuffer *Buffer,
|
|
SMDiagnostic &Err,
|
|
LLVMContext &Context) {
|
|
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);
|
|
}
|
|
|
|
/// If the given file holds a bitcode image, return a Module for it.
|
|
/// Otherwise, attempt to parse it as LLVM Assembly and return a Module
|
|
/// for it.
|
|
inline Module *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);
|
|
}
|
|
|
|
}
|
|
|
|
#endif
|