Enable convertToThreeAddress for X86 by default.

llvm-svn: 42655
diff --git a/llvm/test/CodeGen/X86/loop-strength-reduce2.ll b/llvm/test/CodeGen/X86/loop-strength-reduce2.ll
index 7ed3944..8706b7a 100644
--- a/llvm/test/CodeGen/X86/loop-strength-reduce2.ll
+++ b/llvm/test/CodeGen/X86/loop-strength-reduce2.ll
@@ -1,4 +1,4 @@
-; RUN: llvm-upgrade < %s | llvm-as | llc -mtriple=i686-apple-darwin -relocation-model=pic | not grep lea
+; RUN: llvm-upgrade < %s | llvm-as | 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.