Check for llc crash.

llvm-svn: 27925
diff --git a/llvm/test/Regression/CodeGen/X86/vec_clear.ll b/llvm/test/Regression/CodeGen/X86/vec_clear.ll
index b196501..1c38825 100644
--- a/llvm/test/Regression/CodeGen/X86/vec_clear.ll
+++ b/llvm/test/Regression/CodeGen/X86/vec_clear.ll
@@ -1,3 +1,4 @@
+; RUN: llvm-as < %s | llc -march=x86 -mattr=+sse2 &&
 ; RUN: llvm-as < %s | llc -march=x86 -mattr=+sse2 | not grep and
 <4 x float> %test(<4 x float>* %v1) {
 	%tmp = load <4 x float>* %v1