diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 8e4ca6510ae..59dbeec7033 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,7 @@
+2015-04-02  Uros Bizjak  <ubizjak@gmail.com>
+
+	* config/i386/i386.c (ix86_register_priority): Use AX_REG.
+
 2015-04-02  Uros Bizjak  <ubizjak@gmail.com>
 
 	Revert parts of r216820.
diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
index 744642c7e36..d8d9983009d 100644
--- a/gcc/config/i386/i386.c
+++ b/gcc/config/i386/i386.c
@@ -41256,7 +41256,7 @@ ix86_register_priority (int hard_regno)
   if (FIRST_REX_SSE_REG <= hard_regno && hard_regno <= LAST_REX_SSE_REG)
     return 2;
   /* Usage of AX register results in smaller code.  Prefer it.  */
-  if (hard_regno == 0)
+  if (hard_regno == AX_REG)
     return 4;
   return 3;
 }