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[Bugpoint] Erase comdat annotations after removing a global's initializer.

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Summary:
This is necessary to keep the verifier happy after bugpoint removes an
initializer from a global variable with a comdat annotation, because
globals without initializers may not have comdats.

Reviewers: majnemer, rnk

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D21274

llvm-svn: 272854
This commit is contained in:
Justin Lebar 2016-06-15 23:20:12 +00:00
parent 5db17e4669
commit bb4e7aadbf
2 changed files with 4 additions and 0 deletions
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2
tools/bugpoint/CrashDebugger.cpp
View File

@ -164,6 +164,7 @@ ReduceCrashingGlobalVariables::TestGlobalVariables(
if (I.hasInitializer() && !GVSet.count(&I)) {
DeleteGlobalInitializer(&I);
I.setLinkage(GlobalValue::ExternalLinkage);
I.setComdat(nullptr);
}
// Try running the hacked up program...
@ -668,6 +669,7 @@ static bool DebugACrash(BugDriver &BD,
if (I->hasInitializer()) {
DeleteGlobalInitializer(&*I);
I->setLinkage(GlobalValue::ExternalLinkage);
I->setComdat(nullptr);
DeletedInit = true;
}

2
tools/bugpoint/ExtractFunction.cpp
View File

@ -215,6 +215,8 @@ void llvm::DeleteGlobalInitializer(GlobalVariable *GV) {
//
void llvm::DeleteFunctionBody(Function *F) {
eliminateAliases(F);
// Function declarations can't have comdats.
F->setComdat(nullptr);
// delete the body of the function...
F->deleteBody();