Make tests more useful.

lit needs a linter ...

llvm-svn: 130126
diff --git a/llvm/test/CodeGen/X86/fp-trunc.ll b/llvm/test/CodeGen/X86/fp-trunc.ll
index 4fe78ec..170637a 100644
--- a/llvm/test/CodeGen/X86/fp-trunc.ll
+++ b/llvm/test/CodeGen/X86/fp-trunc.ll
@@ -1,4 +1,4 @@
-; RUN: llc < %s -march=x86 -mattr=+sse2,-avx
+; RUN: llc < %s -march=x86 -mattr=+sse2,-avx | FileCheck %s
 
 define <1 x float> @test1(<1 x double> %x) nounwind {
 ; CHECK: cvtsd2ss