commit c1b6ea7b6ce3a738accbacddf52480bf94354d2f
author Bill Wendling <isanbard@gmail.com> Sat Jun 30 20:21:19 2012 +0000
committer Bill Wendling <isanbard@gmail.com> Sat Jun 30 20:21:19 2012 +0000
tree f29a4f909cf5b0a2c1ef02025b21fd4fdd5a240d
parent cf23bd3d8f7e7dec6331043295dbf1ec92fedb4f

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

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159491 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Transforms/Instrumentation/GCOVProfiling.cpp

diff --git a/lib/Transforms/Instrumentation/GCOVProfiling.cpp b/lib/Transforms/Instrumentation/GCOVProfiling.cpp
index dda92b1..264a6a6 100644
--- a/lib/Transforms/Instrumentation/GCOVProfiling.cpp
+++ b/lib/Transforms/Instrumentation/GCOVProfiling.cpp
@@ -687,8 +687,7 @@
 
   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();