dfp.md: New file.

	* config/rs6000/dfp.md: New file.
	* config/rs6000/rs6000.md: Include dfp.md.
	(add<mode>3_internal1): Disable for DECIMAL_FLOAT_MODE_P operands.
	* config/rs6000/rs6000.c (rs6000_hard_regno_mode_ok): Handle DDmode
	and TDmode decimal float modes in FP registers.
	(num_insns_constant): Likewise.
	(rs6000_legitimate_offset_address_p): Likewise.
	(rs6000_legitimize_address): Likewise.
	(rs6000_legitimize_reload_address): Likewise.
	(rs6000_legitimate_address): Likewise.
	(rs6000_emit_move): Likewise.
	(function_arg_boundary): Likewise.
	(function_arg_advance): Likewise.
	(rs6000_darwin64_record_arg_recurse): Likewise.
	(function_arg): Likewise.
	(rs6000_gimplify_va_arg): Likewise.
	(rs6000_split_multireg_move): Likewise.
	(rs6000_output_function_epilogue): Likewise.
	(rs6000_output_function_epilogue): Likewise.
	(rs6000_register_move_cost): Likewise.
	(rs6000_function_value): Likewise.
	(rs6000_libcall_value): Likewise.

Co-Authored-By: Janis Johnson <janis187@us.ibm.com>
Co-Authored-By: Peter Bergner <bergner@vnet.ibm.com>

From-SVN: r122477

gcc/ChangeLog

+2007-03-02  Ben Elliston  <bje@au.ibm.com>
+	    Peter Bergner  <bergner@vnet.ibm.com>
+	    Janis Johnson  <janis187@us.ibm.com>
+
+	* config/rs6000/dfp.md: New file.
+	* config/rs6000/rs6000.md: Include dfp.md.
+	(add<mode>3_internal1): Disable for DECIMAL_FLOAT_MODE_P operands.
+	* config/rs6000/rs6000.c (rs6000_hard_regno_mode_ok): Handle DDmode
+	and TDmode decimal float modes in FP registers.
+	(num_insns_constant): Likewise.
+	(rs6000_legitimate_offset_address_p): Likewise.
+	(rs6000_legitimize_address): Likewise.
+	(rs6000_legitimize_reload_address): Likewise.
+	(rs6000_legitimate_address): Likewise.
+	(rs6000_emit_move): Likewise.
+	(function_arg_boundary): Likewise.
+	(function_arg_advance): Likewise.
+	(rs6000_darwin64_record_arg_recurse): Likewise.
+	(function_arg): Likewise.
+	(rs6000_gimplify_va_arg): Likewise.
+	(rs6000_split_multireg_move): Likewise.
+	(rs6000_output_function_epilogue): Likewise.
+	(rs6000_output_function_epilogue): Likewise.
+	(rs6000_register_move_cost): Likewise.
+	(rs6000_function_value): Likewise.
+	(rs6000_libcall_value): Likewise.
+
 2007-03-02  Richard Sandiford  <richard@codesourcery.com>
 
 	* config/t-vxworks (LIMITS_H_TEST): Define to true for VxWorks.

gcc/config/rs6000/rs6000.md

@@ -1493,7 +1493,7 @@
   [(set (match_operand:GPR 0 "gpc_reg_operand" "=r,r,?r,r")
 	(plus:GPR (match_operand:GPR 1 "gpc_reg_operand" "%r,b,r,b")
 		  (match_operand:GPR 2 "add_operand" "r,I,I,L")))]
-  ""
+  "!DECIMAL_FLOAT_MODE_P (GET_MODE (operands[0])) && !DECIMAL_FLOAT_MODE_P (GET_MODE (operands[1]))"
   "@
    {cax|add} %0,%1,%2
    {cal %0,%2(%1)|addi %0,%1,%2}
@@ -14531,3 +14531,4 @@
 (include "sync.md")
 (include "altivec.md")
 (include "spe.md")
+(include "dfp.md")