diff --git a/test/CodeGen/X86/bt.ll b/test/CodeGen/X86/bt.ll
index aab91e07b28..bc77a58ce2b 100644
--- a/test/CodeGen/X86/bt.ll
+++ b/test/CodeGen/X86/bt.ll
@@ -1,4 +1,5 @@
 ; RUN: llvm-as < %s | llc | grep btl
+; PR3253
 target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
 target triple = "i386-apple-darwin8"