function.c (assign_parm_setup_block): Relax condition on multi-register optimization.

	* function.c (assign_parm_setup_block): Relax condition on
	multi-register optimization.

From-SVN: r93233

gcc/ChangeLog

+2005-01-12  Aldy Hernandez  <aldyh@redhat.com>
+
+	* function.c (assign_parm_setup_block): Relax condition on
+	multi-register optimization.
+
 2005-01-12  Nick Clifton  <nickc@redhat.com>
 
 	* config/sh/sh.md (udivsi3_sh2a, divsi3_sh2a): Give these patterns

gcc/function.c

@@ -2560,8 +2560,12 @@ assign_parm_setup_block (struct assign_parm_data_all *all,
   /* If we've a non-block object that's nevertheless passed in parts,
      reconstitute it in register operations rather than on the stack.  */
   if (GET_CODE (entry_parm) == PARALLEL
-      && data->nominal_mode != BLKmode
-      && XVECLEN (entry_parm, 0) > 1
+      && data->nominal_mode != BLKmode)
+    {
+      rtx elt0 = XEXP (XVECEXP (entry_parm, 0, 0), 0);
+
+      if ((XVECLEN (entry_parm, 0) > 1
+	   || hard_regno_nregs[REGNO (elt0)][GET_MODE (elt0)] > 1)
 	  && use_register_for_decl (parm))
 	{
 	  rtx parmreg = gen_reg_rtx (data->nominal_mode);
@@ -2597,6 +2601,7 @@ assign_parm_setup_block (struct assign_parm_data_all *all,
 	  SET_DECL_RTL (parm, parmreg);
 	  return;
 	}
+    }
 
   size = int_size_in_bytes (data->passed_type);
   size_stored = CEIL_ROUND (size, UNITS_PER_WORD);