New bug testcase

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2422 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/Transforms/Mem2Reg/2002-05-01-ShouldNotPromoteThisAlloca.ll b/test/Transforms/Mem2Reg/2002-05-01-ShouldNotPromoteThisAlloca.ll
new file mode 100644 (file)
index 0000000..1c107ac
--- /dev/null
+++ b/test/Transforms/Mem2Reg/2002-05-01-ShouldNotPromoteThisAlloca.ll
@@ -0,0 +1,15 @@
+; This input caused the mem2reg pass to die because it was trying to promote
+; the %r alloca, even though it is invalid to do so in this case!
+;
+; RUN: as < %s | opt -mem2reg
+
+
+implementation
+
+void "test"()
+begin
+       %r = alloca int         ; <int*> [#uses=2]
+       store int 4, int* %r
+       store int* %r, int** null
+       ret void
+end