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Sink undesirable LTO functions into the old C API

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We want to encourage users of the C++ LTO API to reuse memory buffers instead
of repeatedly opening and reading the same file contents.

This reverts commit r212305 and implements a tidier scheme.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@212308 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Alp Toker
2014-07-04 00:58:41 +00:00
parent 00428878bb
commit 2255dc7712
3 changed files with 20 additions and 40 deletions
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27
lib/LTO/LTOModule.cpp
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@@ -68,30 +68,9 @@ bool LTOModule::isBitcodeFile(const char *path) {
return type == sys::fs::file_magic::bitcode;
}
/// isBitcodeFileForTarget - Returns 'true' if the file (or memory contents) is
/// LLVM bitcode for the specified triple.
bool LTOModule::isBitcodeFileForTarget(const void *mem, size_t length,
const char *triplePrefix) {
MemoryBuffer *buffer = makeBuffer(mem, length);
if (!buffer)
return false;
return isTargetMatch(StringRef((const char *)mem, length), triplePrefix);
}
bool LTOModule::isBitcodeFileForTarget(const char *path,
const char *triplePrefix) {
std::unique_ptr<MemoryBuffer> buffer;
if (MemoryBuffer::getFile(path, buffer))
return false;
return isTargetMatch(buffer->getBuffer(), triplePrefix);
}
/// Returns 'true' if the bitcode BC is for the specified target triple.
bool LTOModule::isTargetMatch(StringRef BC, const char *TriplePrefix) {
std::unique_ptr<MemoryBuffer> Buffer(
MemoryBuffer::getMemBuffer(BC, "", false));
std::string Triple = getBitcodeTargetTriple(Buffer.get(), getGlobalContext());
return strncmp(Triple.c_str(), TriplePrefix, strlen(TriplePrefix)) == 0;
bool LTOModule::isBitcodeForTarget(MemoryBuffer *buffer,
StringRef triplePrefix) {
return getBitcodeTargetTriple(buffer, getGlobalContext()) == triplePrefix;
}
LTOModule *LTOModule::createFromFile(const char *path, TargetOptions options,