[patch] RFA builtins.c patch

[Eric Christopher]

Here's what should be the real fix for the problem I reported in the
patch I withdrew and Jim commented about last night.

Basically, we already do all of this work better in regclass.c so why
not use the results? :)

OK?

-eric

-- 
Eric Christopher <echristo@redhat.com>

2004-03-17  Eric Christopher  <echristo@redhat.com>

	* builtins.c (apply_args_size): Use reg_raw_mode.
	(apply_result_size): Ditto.

Index: builtins.c
===================================================================
RCS file: /cvs/gcc/gcc/gcc/builtins.c,v
retrieving revision 1.294
diff -u -p -w -r1.294 builtins.c
--- builtins.c	17 Mar 2004 04:46:59 -0000	1.294
+++ builtins.c	17 Mar 2004 08:30:16 -0000
@@ -904,42 +904,8 @@ apply_args_size (void)
       for (regno = 0; regno < FIRST_PSEUDO_REGISTER; regno++)
 	if (FUNCTION_ARG_REGNO_P (regno))
 	  {
-	    /* Search for the proper mode for copying this register's
-	       value.  I'm not sure this is right, but it works so far.  */
-	    enum machine_mode best_mode = VOIDmode;
-
-	    for (mode = GET_CLASS_NARROWEST_MODE (MODE_INT);
-		 mode != VOIDmode;
-		 mode = GET_MODE_WIDER_MODE (mode))
-	      if (HARD_REGNO_MODE_OK (regno, mode)
-		  && hard_regno_nregs[regno][mode] == 1)
-		best_mode = mode;
-
-	    if (best_mode == VOIDmode)
-	      for (mode = GET_CLASS_NARROWEST_MODE (MODE_FLOAT);
-		   mode != VOIDmode;
-		   mode = GET_MODE_WIDER_MODE (mode))
-		if (HARD_REGNO_MODE_OK (regno, mode)
-		    && have_insn_for (SET, mode))
-		  best_mode = mode;
-
-	    if (best_mode == VOIDmode)
-	      for (mode = GET_CLASS_NARROWEST_MODE (MODE_VECTOR_FLOAT);
-		   mode != VOIDmode;
-		   mode = GET_MODE_WIDER_MODE (mode))
-		if (HARD_REGNO_MODE_OK (regno, mode)
-		    && have_insn_for (SET, mode))
-		  best_mode = mode;
-
-	    if (best_mode == VOIDmode)
-	      for (mode = GET_CLASS_NARROWEST_MODE (MODE_VECTOR_INT);
-		   mode != VOIDmode;
-		   mode = GET_MODE_WIDER_MODE (mode))
-		if (HARD_REGNO_MODE_OK (regno, mode)
-		    && have_insn_for (SET, mode))
-		  best_mode = mode;
+	    mode = reg_raw_mode[regno];
 
-	    mode = best_mode;
 	    if (mode == VOIDmode)
 	      abort ();
 
@@ -977,41 +943,8 @@ apply_result_size (void)
       for (regno = 0; regno < FIRST_PSEUDO_REGISTER; regno++)
 	if (FUNCTION_VALUE_REGNO_P (regno))
 	  {
-	    /* Search for the proper mode for copying this register's
-	       value.  I'm not sure this is right, but it works so far.  */
-	    enum machine_mode best_mode = VOIDmode;
-
-	    for (mode = GET_CLASS_NARROWEST_MODE (MODE_INT);
-		 mode != TImode;
-		 mode = GET_MODE_WIDER_MODE (mode))
-	      if (HARD_REGNO_MODE_OK (regno, mode))
-		best_mode = mode;
-
-	    if (best_mode == VOIDmode)
-	      for (mode = GET_CLASS_NARROWEST_MODE (MODE_FLOAT);
-		   mode != VOIDmode;
-		   mode = GET_MODE_WIDER_MODE (mode))
-		if (HARD_REGNO_MODE_OK (regno, mode)
-		    && have_insn_for (SET, mode))
-		  best_mode = mode;
-
-	    if (best_mode == VOIDmode)
-	      for (mode = GET_CLASS_NARROWEST_MODE (MODE_VECTOR_FLOAT);
-		   mode != VOIDmode;
-		   mode = GET_MODE_WIDER_MODE (mode))
-		if (HARD_REGNO_MODE_OK (regno, mode)
-		    && have_insn_for (SET, mode))
-		  best_mode = mode;
-
-	    if (best_mode == VOIDmode)
-	      for (mode = GET_CLASS_NARROWEST_MODE (MODE_VECTOR_INT);
-		   mode != VOIDmode;
-		   mode = GET_MODE_WIDER_MODE (mode))
-		if (HARD_REGNO_MODE_OK (regno, mode)
-		    && have_insn_for (SET, mode))
-		  best_mode = mode;
+	    mode = reg_raw_mode[regno];
 
-	    mode = best_mode;
 	    if (mode == VOIDmode)
 	      abort ();