diff --git a/compiler/utils/x86/assembler_x86.h b/compiler/utils/x86/assembler_x86.h
index 7d7b3d3..af78663 100644
--- a/compiler/utils/x86/assembler_x86.h
+++ b/compiler/utils/x86/assembler_x86.h
@@ -319,9 +319,16 @@
   void movntl(const Address& dst, Register src);
 
   void bswapl(Register dst);
+  void bsfl(Register dst, Register src);
+  void bsfl(Register dst, const Address& src);
   void bsrl(Register dst, Register src);
   void bsrl(Register dst, const Address& src);
 
+  void rorl(Register reg, const Immediate& imm);
+  void rorl(Register operand, Register shifter);
+  void roll(Register reg, const Immediate& imm);
+  void roll(Register operand, Register shifter);
+
   void movzxb(Register dst, ByteRegister src);
   void movzxb(Register dst, const Address& src);
   void movsxb(Register dst, ByteRegister src);