Another testcase. We should be able to devirtualize the call even though

we cannot completely eliminate the global.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16900 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/Transforms/GlobalOpt/storepointer-compare.llx b/test/Transforms/GlobalOpt/storepointer-compare.llx
new file mode 100644 (file)
index 0000000..a6e8ea3
--- /dev/null
+++ b/test/Transforms/GlobalOpt/storepointer-compare.llx
@@ -0,0 +1,28 @@
+; RUN: llvm-as < %s | opt -globalopt | llvm-dis | grep 'call void %Actual'
+
+; Check that a comparison does not prevent an indirect call from being made 
+; direct.  The global will still remain, but indirect call elim is still good.
+
+%G = internal global void ()* null
+
+implementation
+
+internal void %Actual() {
+       ret void
+}
+
+void %init() {
+       store void()* %Actual, void()** %G
+       ret void
+}
+
+void %doit() {
+       %FP = load void()** %G
+       %CC = seteq void()* %FP, null
+       br bool %CC, label %isNull, label %DoCall
+DoCall:
+       call void %FP()
+       ret void
+isNull:
+       ret void
+}