Index: combine.c
===================================================================
--- combine.c	(revision 116691)
+++ combine.c	(working copy)
@@ -2244,7 +2244,7 @@
      needed, and make the PARALLEL by just replacing I2DEST in I3SRC with
      I2SRC.  Later we will make the PARALLEL that contains I2.  */
 
-  if (i1 == 0 && added_sets_2 && GET_CODE (PATTERN (i3)) == SET
+  if (i1 == 0 && GET_CODE (PATTERN (i3)) == SET
       && GET_CODE (SET_SRC (PATTERN (i3))) == COMPARE
       && XEXP (SET_SRC (PATTERN (i3)), 1) == const0_rtx
       && rtx_equal_p (XEXP (SET_SRC (PATTERN (i3)), 0), i2dest))
@@ -2254,6 +2254,13 @@
       enum machine_mode compare_mode;
 #endif
 
+      /* To force generation of the combined comparison and arithmetic
+	 operation PARALLEL, pretend that the set in I2 is to be used,
+	 even if it is dead after I2. This results in better generated
+	 code, as only CC setting arithmetic instruction will be
+	 emitted in conditionals.  */
+      added_sets_2 = 1;
+
       newpat = PATTERN (i3);
       SUBST (XEXP (SET_SRC (newpat), 0), i2src);