diff options
| -rw-r--r-- | lib/Transforms/IPO/GlobalOpt.cpp | 6 | ||||
| -rw-r--r-- | test/Transforms/GlobalOpt/atexit.ll | 6 |
2 files changed, 9 insertions, 3 deletions
diff --git a/lib/Transforms/IPO/GlobalOpt.cpp b/lib/Transforms/IPO/GlobalOpt.cpp index 0ef900e..4a9cb27 100644 --- a/lib/Transforms/IPO/GlobalOpt.cpp +++ b/lib/Transforms/IPO/GlobalOpt.cpp @@ -3323,8 +3323,6 @@ bool GlobalOpt::runOnModule(Module &M) { // Try to find the llvm.globalctors list. GlobalVariable *GlobalCtors = FindGlobalCtors(M); - Function *CXAAtExitFn = FindCXAAtExit(M, TLI); - bool LocalChange = true; while (LocalChange) { LocalChange = false; @@ -3342,7 +3340,9 @@ bool GlobalOpt::runOnModule(Module &M) { // Resolve aliases, when possible. LocalChange |= OptimizeGlobalAliases(M); - // Try to remove trivial global destructors. + // Try to remove trivial global destructors if they are not removed + // already. + Function *CXAAtExitFn = FindCXAAtExit(M, TLI); if (CXAAtExitFn) LocalChange |= OptimizeEmptyGlobalCXXDtors(CXAAtExitFn); diff --git a/test/Transforms/GlobalOpt/atexit.ll b/test/Transforms/GlobalOpt/atexit.ll new file mode 100644 index 0000000..dbcd0d7 --- /dev/null +++ b/test/Transforms/GlobalOpt/atexit.ll @@ -0,0 +1,6 @@ +; RUN: opt < %s -globalopt -S | FileCheck %s + +; CHECK: ModuleID +define internal hidden i32 @__cxa_atexit(void (i8*)* nocapture %func, i8* nocapture %arg, i8* nocapture %dso_handle) nounwind readnone optsize noimplicitfloat { + unreachable +} |