simplify some run lines, convert a test to filecheck.

llvm-svn: 83750
diff --git a/llvm/test/Transforms/JumpThreading/compare.ll b/llvm/test/Transforms/JumpThreading/compare.ll
index 8784b3f..581785c 100644
--- a/llvm/test/Transforms/JumpThreading/compare.ll
+++ b/llvm/test/Transforms/JumpThreading/compare.ll
@@ -1,5 +1,5 @@
 ; There should be no phi nodes left.
-; RUN: opt < %s -jump-threading -simplifycfg -mem2reg -S | not grep {phi i32}
+; RUN: opt < %s -jump-threading  -S | not grep {phi i32}
 
 declare i32 @f1()
 declare i32 @f2()