Eliminate explicit control flow in tests


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6961 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Transforms/SimplifyCFG/PhiBlockMerge.ll b/test/Transforms/SimplifyCFG/PhiBlockMerge.ll
index d1df2a1..21e4f59 100644
--- a/test/Transforms/SimplifyCFG/PhiBlockMerge.ll
+++ b/test/Transforms/SimplifyCFG/PhiBlockMerge.ll
@@ -1,9 +1,6 @@
 ; Test merging of blocks that only have PHI nodes in them
 ;
-; RUN: if as < %s | opt -simplifycfg | dis | grep 'N:'
-; RUN: then exit 1
-; RUN: else exit 0
-; RUN: fi
+; RUN: as < %s | opt -simplifycfg | dis | not grep 'N:'
 ;
 
 int %test(bool %a, bool %b) {