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Don't reinsert the 'atexit' function if it already exists.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159491 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Bill Wendling 2012-06-30 20:21:19 +00:00
parent cf23bd3d8f
commit c1b6ea7b6c
1 changed files with 1 additions and 2 deletions
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3
lib/Transforms/Instrumentation/GCOVProfiling.cpp
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@ -687,8 +687,7 @@ void GCOVProfiler::insertCounterWriteout(
FTy = FunctionType::get(Type::getInt32Ty(*Ctx),
PointerType::get(FTy, 0), false);
Function *AtExitFn =
Function::Create(FTy, GlobalValue::ExternalLinkage, "atexit", M);
Constant *AtExitFn = M->getOrInsertFunction("atexit", FTy);
Builder.CreateCall(AtExitFn, WriteoutF);
Builder.CreateRetVoid();