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Revert r320464 as it breaks gold plugin tests 

llvm-svn: 320467
This commit is contained in:
Eugene Leviant 2017-12-12 10:12:46 +00:00
parent d63560b817
commit d53f3da772
1 changed files with 14 additions and 0 deletions
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14
llvm/lib/Transforms/IPO/FunctionImport.cpp
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@ -642,9 +642,23 @@ void llvm::thinLTOResolveWeakForLinkerModule(
/// Run internalization on \p TheModule based on symmary analysis. /// Run internalization on \p TheModule based on symmary analysis.
void llvm::thinLTOInternalizeModule(Module &TheModule, void llvm::thinLTOInternalizeModule(Module &TheModule,
const GVSummaryMapTy &DefinedGlobals) { const GVSummaryMapTy &DefinedGlobals) {
// Parse inline ASM and collect the list of symbols that are not defined in
// the current module.
StringSet<> AsmUndefinedRefs;
ModuleSymbolTable::CollectAsmSymbols(
TheModule,
[&AsmUndefinedRefs](StringRef Name, object::BasicSymbolRef::Flags Flags) {
if (Flags & object::BasicSymbolRef::SF_Undefined)
AsmUndefinedRefs.insert(Name);
});
// Declare a callback for the internalize pass that will ask for every // Declare a callback for the internalize pass that will ask for every
// candidate GlobalValue if it can be internalized or not. // candidate GlobalValue if it can be internalized or not.
auto MustPreserveGV = [&](const GlobalValue &GV) -> bool { auto MustPreserveGV = [&](const GlobalValue &GV) -> bool {
// Can't be internalized if referenced in inline asm.
if (AsmUndefinedRefs.count(GV.getName()))
return true;
// Lookup the linkage recorded in the summaries during global analysis. // Lookup the linkage recorded in the summaries during global analysis.
auto GS = DefinedGlobals.find(GV.getGUID()); auto GS = DefinedGlobals.find(GV.getGUID());
if (GS == DefinedGlobals.end()) { if (GS == DefinedGlobals.end()) {