Fix DejaGNU run line to escape special characters.

llvm-svn: 73090
diff --git a/llvm/test/TableGen/Slice.td b/llvm/test/TableGen/Slice.td
index 75765d3..cd9c6da 100644
--- a/llvm/test/TableGen/Slice.td
+++ b/llvm/test/TableGen/Slice.td
@@ -1,5 +1,5 @@
-// RUN: tblgen %s | grep {[(set VR128:$dst, (int_x86_sse2_add_pd VR128:$src1, VR128:$src2))]} | count 1
-// RUN: tblgen %s | grep {[(set VR128:$dst, (int_x86_sse2_add_ps VR128:$src1, VR128:$src2))]} | count 2
+// RUN: tblgen %s | grep {\\\[(set} | count 2
+// RUN: tblgen %s | grep {\\\[\\\]} | count 2
 
 class ValueType<int size, int value> {
   int Size = size;