Remove usage of grep-not script


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6966 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Assembler/ConstantExprFoldCast.llx b/test/Assembler/ConstantExprFoldCast.llx
index 34e5654..3dc6aac 100644
--- a/test/Assembler/ConstantExprFoldCast.llx
+++ b/test/Assembler/ConstantExprFoldCast.llx
@@ -1,6 +1,6 @@
 ; This test checks to make sure that constant exprs fold in some simple situations
 
-; RUN: as < %s | dis | grep-not cast
+; RUN: as < %s | dis | not grep cast
 
 %A = global int* cast (sbyte* null to int*)  ; Cast null -> fold
 %B = global int** cast (int** %A to int**)   ; Cast to same type -> fold