builtins.c (apply_args_size): Use reg_raw_mode.

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

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

From-SVN: r79609

1 files changed, 20 insertions, 87 deletions

diff --git a/gcc/builtins.c b/gcc/builtins.c
index d394a40..0222673 100644
--- a/gcc/builtins.c
+++ b/gcc/builtins.c
@@ -261,7 +261,7 @@ c_strlen (tree src, int only_value)
 
       len1 = c_strlen (TREE_OPERAND (src, 1), only_value);
       len2 = c_strlen (TREE_OPERAND (src, 2), only_value);
-      if (tree_int_cst_equal (len1, len2))      
+      if (tree_int_cst_equal (len1, len2))
 	return len1;
     }
 
@@ -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 = best_mode;
+	    mode = reg_raw_mode[regno];
+
 	    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 = best_mode;
+	    mode = reg_raw_mode[regno];
+
 	    if (mode == VOIDmode)
 	      abort ();
 
@@ -1109,7 +1042,7 @@ expand_builtin_apply_args_1 (void)
 		     NULL_RTX);
 #endif
   emit_move_insn (adjust_address (registers, Pmode, 0), tem);
-  
+
   size = GET_MODE_SIZE (Pmode);
 
   /* Save the structure value address unless this is passed as an
@@ -1895,7 +1828,7 @@ expand_builtin_mathfn_2 (tree exp, rtx target, rtx subtarget)
    multiplications to inline before calling the system library's pow
    function.  powi(x,n) requires at worst 2*bits(n)-2 multiplications,
    so this default never requires calling pow, powf or powl.  */
- 
+
 #ifndef POWI_MAX_MULTS
 #define POWI_MAX_MULTS  (2*HOST_BITS_PER_WIDE_INT-2)
 #endif
@@ -2012,7 +1945,7 @@ powi_cost (HOST_WIDE_INT n)
 	  result++;
 	}
     }
-  
+
   return result + powi_lookup_cost (val, cache);
 }
 
@@ -2061,7 +1994,7 @@ expand_powi_1 (enum machine_mode mode, unsigned HOST_WIDE_INT n, rtx *cache)
 /* Expand the RTL to evaluate powi(x,n) in mode MODE.  X is the
    floating point operand in mode MODE, and N is the exponent.  This
    function needs to be kept in sync with powi_cost above.  */
-   
+
 static rtx
 expand_powi (rtx x, enum machine_mode mode, HOST_WIDE_INT n)
 {
@@ -2622,7 +2555,7 @@ expand_builtin_mempcpy (tree arglist, rtx target, enum machine_mode mode,
       /* If LEN is not constant, call the normal function.  */
       if (! host_integerp (len, 1))
 	return 0;
-  
+
       /* If the LEN parameter is zero, return DEST.  */
       if (tree_low_cst (len, 1) == 0)
 	{
@@ -3195,7 +3128,7 @@ expand_builtin_memcmp (tree exp ATTRIBUTE_UNUSED, tree arglist, rtx target,
       insn_mode = insn_data[(int) CODE_FOR_cmpstrsi].operand[0].mode;
     else
 #endif
-      return 0;     
+      return 0;
 
     /* If we don't have POINTER_TYPE, call the function.  */
     if (arg1_align == 0 || arg2_align == 0)
@@ -3597,7 +3530,7 @@ expand_builtin_strcat (tree arglist, rtx target, enum machine_mode mode)
                  pieces into (dst + strlen(dst)).  */
 	      tree newdst, arglist,
 		strlen_fn = implicit_built_in_decls[BUILT_IN_STRLEN];
-	      
+
 	      /* This is the length argument.  */
 	      arglist = build_tree_list (NULL_TREE,
 					 fold (size_binop (PLUS_EXPR,
@@ -3605,7 +3538,7 @@ expand_builtin_strcat (tree arglist, rtx target, enum machine_mode mode)
 							   ssize_int (1))));
 	      /* Prepend src argument.  */
 	      arglist = tree_cons (NULL_TREE, src, arglist);
-	      
+
 	      /* We're going to use dst more than once.  */
 	      dst = save_expr (dst);
 
@@ -3619,7 +3552,7 @@ expand_builtin_strcat (tree arglist, rtx target, enum machine_mode mode)
 
 	      /* Prepend the new dst argument.  */
 	      arglist = tree_cons (NULL_TREE, newdst, arglist);
-	      
+
 	      /* We don't want to get turned into a memcpy if the
                  target is const0_rtx, i.e. when the return value
                  isn't used.  That would produce pessimized code so
@@ -4638,7 +4571,7 @@ build_string_literal (int len, const char *str)
 /* Expand a call to printf or printf_unlocked with argument list ARGLIST.
    Return 0 if a normal call should be emitted rather than transforming
    the function inline.  If convenient, the result should be placed in
-   TARGET with mode MODE.  UNLOCKED indicates this is a printf_unlocked 
+   TARGET with mode MODE.  UNLOCKED indicates this is a printf_unlocked
    call.  */
 static rtx
 expand_builtin_printf (tree arglist, rtx target, enum machine_mode mode,
@@ -4741,7 +4674,7 @@ expand_builtin_printf (tree arglist, rtx target, enum machine_mode mode,
 /* Expand a call to fprintf or fprintf_unlocked with argument list ARGLIST.
    Return 0 if a normal call should be emitted rather than transforming
    the function inline.  If convenient, the result should be placed in
-   TARGET with mode MODE.  UNLOCKED indicates this is a fprintf_unlocked 
+   TARGET with mode MODE.  UNLOCKED indicates this is a fprintf_unlocked
    call.  */
 static rtx
 expand_builtin_fprintf (tree arglist, rtx target, enum machine_mode mode,
@@ -6209,7 +6142,7 @@ fold_builtin_logarithm (tree exp, const REAL_VALUE_TYPE *value)
       tree type = TREE_TYPE (TREE_TYPE (fndecl));
       tree arg = TREE_VALUE (arglist);
       const enum built_in_function fcode = builtin_mathfn_code (arg);
-	
+
       /* Optimize logN(1.0) = 0.0.  */
       if (real_onep (arg))
 	return build_real (type, dconst0);
@@ -6224,7 +6157,7 @@ fold_builtin_logarithm (tree exp, const REAL_VALUE_TYPE *value)
 	  if (real_dconstp (arg, &value_truncate))
 	    return build_real (type, dconst1);
 	}
-      
+
       /* Special case, optimize logN(expN(x)) = x.  */
       if (flag_unsafe_math_optimizations
 	  && ((value == &dconste
@@ -6244,7 +6177,7 @@ fold_builtin_logarithm (tree exp, const REAL_VALUE_TYPE *value)
       if (flag_unsafe_math_optimizations)
         {
 	  tree exponent = 0, x = 0;
-	  
+
 	  switch (fcode)
 	  {
 	  case BUILT_IN_EXP:
@@ -6311,7 +6244,7 @@ fold_builtin_logarithm (tree exp, const REAL_VALUE_TYPE *value)
 
   return 0;
 }
-	  
+
 /* A subroutine of fold_builtin to fold the various exponent
    functions.  EXP is the CALL_EXPR of a call to a builtin function.
    VALUE is the value which will be raised to a power.  */