Fix some more quoting issues in RUN lines, this time regarding unintended
variable expansions involving the $ character.

This fixes 4 tests that were not running properly before.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52183 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGen/X86/loop-strength-reduce2.ll b/test/CodeGen/X86/loop-strength-reduce2.ll
index 839b295..507a9e5 100644
--- a/test/CodeGen/X86/loop-strength-reduce2.ll
+++ b/test/CodeGen/X86/loop-strength-reduce2.ll
@@ -1,4 +1,4 @@
-; RUN: llvm-as < %s | llc -mtriple=i686-apple-darwin -relocation-model=pic | grep '\$pb' | grep mov
+; RUN: llvm-as < %s | llc -mtriple=i686-apple-darwin -relocation-model=pic | grep {\$pb} | grep mov
 ;
 ; Make sure the PIC label flags2-"L1$pb" is not moved up to the preheader.