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Change IRObjectFile to parse the bitcode lazily.

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The main point of this class is to provide a cheap object interface to a bitcode
file, so it has to be as lazy as possible.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@211207 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Rafael Espindola 2014-06-18 19:05:24 +00:00
parent cc21bbde87
commit d681e31b46
1 changed files with 13 additions and 2 deletions
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15
lib/Object/IRObjectFile.cpp
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@ -23,7 +23,8 @@ using namespace object;
IRObjectFile::IRObjectFile(MemoryBuffer *Object, std::error_code &EC, IRObjectFile::IRObjectFile(MemoryBuffer *Object, std::error_code &EC,
LLVMContext &Context, bool BufferOwned) LLVMContext &Context, bool BufferOwned)
: SymbolicFile(Binary::ID_IR, Object, BufferOwned) { : SymbolicFile(Binary::ID_IR, Object, BufferOwned) {
ErrorOr<Module*> MOrErr = parseBitcodeFile(Object, Context); ErrorOr<Module *> MOrErr =
getLazyBitcodeModule(Object, Context, /*BufferOwned*/ false);
if ((EC = MOrErr.getError())) if ((EC = MOrErr.getError()))
return; return;
@ -104,11 +105,21 @@ std::error_code IRObjectFile::printSymbolName(raw_ostream &OS,
return object_error::success; return object_error::success;
} }
static bool isDeclaration(const GlobalValue &V) {
if (V.hasAvailableExternallyLinkage())
return true;
if (V.isMaterializable())
return false;
return V.isDeclaration();
}
uint32_t IRObjectFile::getSymbolFlags(DataRefImpl Symb) const { uint32_t IRObjectFile::getSymbolFlags(DataRefImpl Symb) const {
const GlobalValue &GV = getGV(Symb); const GlobalValue &GV = getGV(Symb);
uint32_t Res = BasicSymbolRef::SF_None; uint32_t Res = BasicSymbolRef::SF_None;
if (GV.isDeclaration() || GV.hasAvailableExternallyLinkage()) if (isDeclaration(GV))
Res |= BasicSymbolRef::SF_Undefined; Res |= BasicSymbolRef::SF_Undefined;
if (GV.hasPrivateLinkage()) if (GV.hasPrivateLinkage())
Res |= BasicSymbolRef::SF_FormatSpecific; Res |= BasicSymbolRef::SF_FormatSpecific;