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f0356fe140
Modules and ModuleProviders. Because the "ModuleProvider" simply materializes GlobalValues now, and doesn't provide modules, it's renamed to "GVMaterializer". Code that used to need a ModuleProvider to materialize Functions can now materialize the Functions directly. Functions no longer use a magic linkage to record that they're materializable; they simply ask the GVMaterializer. Because the C ABI must never change, we can't remove LLVMModuleProviderRef or the functions that refer to it. Instead, because Module now exposes the same functionality ModuleProvider used to, we store a Module* in any LLVMModuleProviderRef and translate in the wrapper methods. The bindings to other languages still use the ModuleProvider concept. It would probably be worth some time to update them to follow the C++ more closely, but I don't intend to do it. Fixes http://llvm.org/PR5737 and http://llvm.org/PR5735. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94686 91177308-0d34-0410-b5e6-96231b3b80d8
90 lines
2.9 KiB
C++
90 lines
2.9 KiB
C++
//===-- BitReader.cpp -----------------------------------------------------===//
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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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#include "llvm-c/BitReader.h"
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#include "llvm/Bitcode/ReaderWriter.h"
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#include "llvm/LLVMContext.h"
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#include "llvm/Support/MemoryBuffer.h"
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#include <string>
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#include <cstring>
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using namespace llvm;
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/* Builds a module from the bitcode in the specified memory buffer, returning a
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reference to the module via the OutModule parameter. Returns 0 on success.
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Optionally returns a human-readable error message via OutMessage. */
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LLVMBool LLVMParseBitcode(LLVMMemoryBufferRef MemBuf,
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LLVMModuleRef *OutModule, char **OutMessage) {
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std::string Message;
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*OutModule = wrap(ParseBitcodeFile(unwrap(MemBuf), getGlobalContext(),
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&Message));
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if (!*OutModule) {
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if (OutMessage)
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*OutMessage = strdup(Message.c_str());
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return 1;
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}
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return 0;
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}
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LLVMBool LLVMParseBitcodeInContext(LLVMContextRef ContextRef,
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LLVMMemoryBufferRef MemBuf,
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LLVMModuleRef *OutModule,
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char **OutMessage) {
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std::string Message;
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*OutModule = wrap(ParseBitcodeFile(unwrap(MemBuf), *unwrap(ContextRef),
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&Message));
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if (!*OutModule) {
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if (OutMessage)
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*OutMessage = strdup(Message.c_str());
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return 1;
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}
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return 0;
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}
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/* Reads a module from the specified path, returning via the OutModule parameter
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a module provider which performs lazy deserialization. Returns 0 on success.
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Optionally returns a human-readable error message via OutMessage. */
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LLVMBool LLVMGetBitcodeModuleProvider(LLVMMemoryBufferRef MemBuf,
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LLVMModuleProviderRef *OutMP,
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char **OutMessage) {
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std::string Message;
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*OutMP = reinterpret_cast<LLVMModuleProviderRef>(
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getLazyBitcodeModule(unwrap(MemBuf), getGlobalContext(), &Message));
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if (!*OutMP) {
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if (OutMessage)
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*OutMessage = strdup(Message.c_str());
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return 1;
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}
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return 0;
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}
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LLVMBool LLVMGetBitcodeModuleProviderInContext(LLVMContextRef ContextRef,
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LLVMMemoryBufferRef MemBuf,
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LLVMModuleProviderRef *OutMP,
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char **OutMessage) {
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std::string Message;
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*OutMP = reinterpret_cast<LLVMModuleProviderRef>(
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getLazyBitcodeModule(unwrap(MemBuf), *unwrap(ContextRef), &Message));
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if (!*OutMP) {
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if (OutMessage)
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*OutMessage = strdup(Message.c_str());
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return 1;
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}
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return 0;
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}
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