diff --git a/compiler/utils/x86/assembler_x86.h b/compiler/utils/x86/assembler_x86.h
index 850e1da..a9227f3 100644
--- a/compiler/utils/x86/assembler_x86.h
+++ b/compiler/utils/x86/assembler_x86.h
@@ -234,6 +234,8 @@
   void movntl(const Address& dst, Register src);
 
   void bswapl(Register dst);
+  void bsrl(Register dst, Register src);
+  void bsrl(Register dst, const Address& src);
 
   void movzxb(Register dst, ByteRegister src);
   void movzxb(Register dst, const Address& src);