Index: gcc/combine.c
===================================================================
--- gcc/combine.c	(revision 316468)
+++ gcc/combine.c	(working copy)
@@ -3511,7 +3511,7 @@ try_combine (rtx i3, rtx i2, rtx i1, int
      as two separate insns.  This case occurs when some SET allows two
      other insns to combine, but the destination of that SET is still live.  */
 
-  else if (i1 && insn_code_number < 0 && asm_noperands (newpat) < 0
+  else if (insn_code_number < 0 && asm_noperands (newpat) < 0
 	   && GET_CODE (newpat) == PARALLEL
 	   && XVECLEN (newpat, 0) == 2
 	   && GET_CODE (XVECEXP (newpat, 0, 0)) == SET
@@ -3883,7 +3883,7 @@ try_combine (rtx i3, rtx i2, rtx i1, int
        patterns, move from I1 to I2 then I2 to I3 so that we get the
        proper movement on registers that I2 modifies.  */
 
-    if (newi2pat)
+    if (newi2pat && i1)
       {
 	move_deaths (newi2pat, NULL_RTX, DF_INSN_LUID (i1), i2, &midnotes);
 	move_deaths (newpat, newi2pat, DF_INSN_LUID (i1), i3, &midnotes);