rs6000.c (USE_FP_FOR_ARG_P): Revert TARGET_DOUBLE_FLOAT, TARGET_SINGLE_FLOAT.

        * config/rs6000/rs6000.c (USE_FP_FOR_ARG_P): Revert
        TARGET_DOUBLE_FLOAT, TARGET_SINGLE_FLOAT.
        (function_arg_advance): Condition on TARGET_DOUBLE_FLOAT,
        TARGET_SINGLE_FLOAT.
        Revert SCALAR_FLOAT_MODE_P condition.
        (function_arg): Condition on TARGET_DOUBLE_FLOAT,
        TARGET_SINGLE_FLOAT.
        (rs6000_function_value): Revert TARGET_DOUBLE_FLOAT,
        TARGET_SINGLE_FLOAT.

From-SVN: r140838

gcc/ChangeLog

+2008-10-02  David Edelsohn  <edelsohn@gnu.org>
+
+	* config/rs6000/rs6000.c (USE_FP_FOR_ARG_P): Revert
+	TARGET_DOUBLE_FLOAT, TARGET_SINGLE_FLOAT.
+	(function_arg_advance): Condition on TARGET_DOUBLE_FLOAT,
+	TARGET_SINGLE_FLOAT.
+	Revert SCALAR_FLOAT_MODE_P condition.
+	(function_arg): Condition on TARGET_DOUBLE_FLOAT,
+	TARGET_SINGLE_FLOAT.
+	(rs6000_function_value): Revert TARGET_DOUBLE_FLOAT,
+	TARGET_SINGLE_FLOAT.
+
 2008-10-02  Daniel Jacobowitz  <dan@codesourcery.com>
 
 	* builtins.c (fold_builtin_pow): Check for 0 ** NEGATIVE.

gcc/config/rs6000/rs6000.c

@@ -5249,9 +5249,7 @@ rs6000_emit_move (rtx dest, rtx source, enum machine_mode mode)
 #define USE_FP_FOR_ARG_P(CUM,MODE,TYPE)		\
   (SCALAR_FLOAT_MODE_P (MODE)			\
    && (CUM)->fregno <= FP_ARG_MAX_REG		\
-   && TARGET_HARD_FLOAT && TARGET_FPRS 		\
-   && ((TARGET_DOUBLE_FLOAT && (MODE) == DFmode)\
-       || (TARGET_SINGLE_FLOAT && (MODE) == SFmode)))
+   && TARGET_HARD_FLOAT && TARGET_FPRS)
 
 /* Nonzero if we can use an AltiVec register to pass this arg.  */
 #define USE_ALTIVEC_FOR_ARG_P(CUM,MODE,TYPE,NAMED)	\
@@ -5728,9 +5726,10 @@ function_arg_advance (CUMULATIVE_ARGS *cum, enum machine_mode mode,
   else if (DEFAULT_ABI == ABI_V4)
     {
       if (TARGET_HARD_FLOAT && TARGET_FPRS
-          && (mode == SFmode || mode == DFmode
-	      || mode == SDmode || mode == DDmode || mode == TDmode
-              || (mode == TFmode && !TARGET_IEEEQUAD)))
+	  && ((TARGET_SINGLE_FLOAT && mode == SFmode)
+	      || (TARGET_DOUBLE_FLOAT && mode == DFmode)
+	      || (mode == TFmode && !TARGET_IEEEQUAD)
+	      || mode == SDmode || mode == DDmode || mode == TDmode))
 	{
 	  /* _Decimal128 must use an even/odd register pair.  This assumes
 	     that the register number is odd when fregno is odd.  */
@@ -5796,9 +5795,7 @@ function_arg_advance (CUMULATIVE_ARGS *cum, enum machine_mode mode,
       cum->words = align_words + n_words;
 
       if (SCALAR_FLOAT_MODE_P (mode)
-	  && TARGET_HARD_FLOAT && TARGET_FPRS
- 	  && ((TARGET_DOUBLE_FLOAT && mode == DFmode)
- 	      || (TARGET_SINGLE_FLOAT && mode == SFmode)))
+	  && TARGET_HARD_FLOAT && TARGET_FPRS)
 	{
 	  /* _Decimal128 must be passed in an even/odd float register pair.
 	     This assumes that the register number is odd when fregno is
@@ -6292,7 +6289,8 @@ function_arg (CUMULATIVE_ARGS *cum, enum machine_mode mode,
   else if (abi == ABI_V4)
     {
       if (TARGET_HARD_FLOAT && TARGET_FPRS
-	  && (mode == SFmode || mode == DFmode
+	  && ((TARGET_SINGLE_FLOAT && mode == SFmode)
+	      || (TARGET_DOUBLE_FLOAT && mode == DFmode)
 	      || (mode == TFmode && !TARGET_IEEEQUAD)
 	      || mode == SDmode || mode == DDmode || mode == TDmode))
 	{
@@ -22522,10 +22520,7 @@ rs6000_function_value (const_tree valtype, const_tree func ATTRIBUTE_UNUSED)
   if (DECIMAL_FLOAT_MODE_P (mode) && TARGET_HARD_FLOAT && TARGET_FPRS)
     /* _Decimal128 must use an even/odd register pair.  */
     regno = (mode == TDmode) ? FP_ARG_RETURN + 1 : FP_ARG_RETURN;
-  else if (SCALAR_FLOAT_TYPE_P (valtype) && TARGET_FPRS 
-           && (TARGET_HARD_FLOAT 
-	       && ((TARGET_SINGLE_FLOAT && mode == SFmode) 
-	           || TARGET_DOUBLE_FLOAT)))
+  else if (SCALAR_FLOAT_TYPE_P (valtype) && TARGET_HARD_FLOAT && TARGET_FPRS)
     regno = FP_ARG_RETURN;
   else if (TREE_CODE (valtype) == COMPLEX_TYPE
 	   && targetm.calls.split_complex_arg)