expr.c (emit_group_store): Only create a new pseudo reg if the quantity it needs…

expr.c (emit_group_store): Only create a new pseudo reg if the quantity it needs to hold isn't already a...


	* expr.c (emit_group_store): Only create a new pseudo reg if the
	quantity it needs to hold isn't already a suitable pseudo.

From-SVN: r112469

gcc/ChangeLog

+2006-03-28  Roger Sayle   <roger@eyesopen.com>
+
+	* expr.c (emit_group_store): Only create a new pseudo reg if the
+	quantity it needs to hold isn't already a suitable pseudo.
+
 2006-03-28  Jeff Law  <law@redhat.com>
 
 	* timevar.def (TV_TREE_PHI_CPROP): New timevar.

gcc/expr.c

@@ -1890,8 +1890,13 @@ emit_group_store (rtx orig_dst, rtx src, tree type ATTRIBUTE_UNUSED, int ssize)
   for (i = start; i < XVECLEN (src, 0); i++)
     {
       rtx reg = XEXP (XVECEXP (src, 0, i), 0);
-      tmps[i] = gen_reg_rtx (GET_MODE (reg));
-      emit_move_insn (tmps[i], reg);
+      if (!REG_P (reg) || REGNO (reg) < FIRST_PSEUDO_REGISTER)
+	{
+	  tmps[i] = gen_reg_rtx (GET_MODE (reg));
+	  emit_move_insn (tmps[i], reg);
+	}
+      else
+	tmps[i] = reg;
     }
 
   /* If we won't be storing directly into memory, protect the real destination
@@ -1918,7 +1923,8 @@ emit_group_store (rtx orig_dst, rtx src, tree type ATTRIBUTE_UNUSED, int ssize)
     }
   else if (!MEM_P (dst) && GET_CODE (dst) != CONCAT)
     {
-      dst = gen_reg_rtx (GET_MODE (orig_dst));
+      if (!REG_P (dst) || REGNO (dst) < FIRST_PSEUDO_REGISTER)
+	dst = gen_reg_rtx (GET_MODE (orig_dst));
       /* Make life a bit easier for combine.  */
       emit_move_insn (dst, CONST0_RTX (GET_MODE (orig_dst)));
     }