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https://github.com/c64scene-ar/llvm-6502.git
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d0996e5b33
clang was needlessly duplicating whole memory buffer contents in an attempt to satisfy unclear ownership semantics. Let's just hide internal LLVM quirks and present a simple non-owning interface. The public C API preserves previous behaviour for stability. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@211861 91177308-0d34-0410-b5e6-96231b3b80d8
61 lines
2.0 KiB
C++
61 lines
2.0 KiB
C++
//===- Parser.cpp - Main dispatch module for the Parser library -----------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This library implements the functionality defined in llvm/AsmParser/Parser.h
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/AsmParser/Parser.h"
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#include "LLParser.h"
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#include "llvm/IR/Module.h"
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#include "llvm/Support/MemoryBuffer.h"
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#include "llvm/Support/SourceMgr.h"
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#include "llvm/Support/raw_ostream.h"
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#include <cstring>
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#include <system_error>
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using namespace llvm;
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Module *llvm::ParseAssembly(MemoryBuffer *F,
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Module *M,
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SMDiagnostic &Err,
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LLVMContext &Context) {
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SourceMgr SM;
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SM.AddNewSourceBuffer(F, SMLoc());
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// If we are parsing into an existing module, do it.
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if (M)
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return LLParser(F, SM, Err, M).Run() ? nullptr : M;
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// Otherwise create a new module.
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std::unique_ptr<Module> M2(new Module(F->getBufferIdentifier(), Context));
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if (LLParser(F, SM, Err, M2.get()).Run())
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return nullptr;
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return M2.release();
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}
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Module *llvm::ParseAssemblyFile(const std::string &Filename, SMDiagnostic &Err,
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LLVMContext &Context) {
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std::unique_ptr<MemoryBuffer> File;
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if (std::error_code ec = MemoryBuffer::getFileOrSTDIN(Filename, File)) {
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Err = SMDiagnostic(Filename, SourceMgr::DK_Error,
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"Could not open input file: " + ec.message());
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return nullptr;
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}
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return ParseAssembly(File.release(), nullptr, Err, Context);
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}
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Module *llvm::ParseAssemblyString(const char *AsmString, Module *M,
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SMDiagnostic &Err, LLVMContext &Context) {
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MemoryBuffer *F =
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MemoryBuffer::getMemBuffer(StringRef(AsmString), "<string>");
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return ParseAssembly(F, M, Err, Context);
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}
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