Don't crash when llvm.compiler.used becomes empty.
GlobalOpt simplifies llvm.compiler.used by removing any members that are also
in the more strict llvm.used. Handle the special case where llvm.compiler.used
becomes empty.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@186778 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/IPO/GlobalOpt.cpp b/lib/Transforms/IPO/GlobalOpt.cpp
index 669162c..183a599 100644
--- a/lib/Transforms/IPO/GlobalOpt.cpp
+++ b/lib/Transforms/IPO/GlobalOpt.cpp
@@ -3070,6 +3070,11 @@
static void setUsedInitializer(GlobalVariable &V,
SmallPtrSet<GlobalValue *, 8> Init) {
+ if (Init.empty()) {
+ V.eraseFromParent();
+ return;
+ }
+
SmallVector<llvm::Constant *, 8> UsedArray;
PointerType *Int8PtrTy = Type::getInt8PtrTy(V.getContext());