re PR target/64180 (PowerPC carry bit improvements)

	PR target/64180
	* config/rs6000/rs6000.md (*add<mode>3_internal1): Remove addic
	alternative.

From-SVN: r218592

gcc/ChangeLog

 2014-12-10  Segher Boessenkool  <segher@kernel.crashing.org>
 
 	PR target/64180
+	* config/rs6000/rs6000.md (*add<mode>3_internal1): Remove addic
+	alternative.
+
+2014-12-10  Segher Boessenkool  <segher@kernel.crashing.org>
+
+	PR target/64180
 	* config/rs6000/rs6000.md (*ctr<mode>_internal1, *ctr<mode>_internal2,
 	*ctr<mode>_internal5, *ctr<mode>_internal6): Change "r" alternatives
 	to "b".  Increase length.

gcc/config/rs6000/rs6000.md

@@ -1491,17 +1491,14 @@
     }
 })
 
-;; Discourage ai/addic because of carry but provide it in an alternative
-;; allowing register zero as source.
 (define_insn "*add<mode>3_internal1"
-  [(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")))]
+  [(set (match_operand:GPR 0 "gpc_reg_operand" "=r,r,r")
+	(plus:GPR (match_operand:GPR 1 "gpc_reg_operand" "%r,b,b")
+		  (match_operand:GPR 2 "add_operand" "r,I,L")))]
   "!DECIMAL_FLOAT_MODE_P (GET_MODE (operands[0])) && !DECIMAL_FLOAT_MODE_P (GET_MODE (operands[1]))"
   "@
    add %0,%1,%2
    addi %0,%1,%2
-   addic %0,%1,%2
    addis %0,%1,%v2"
   [(set_attr "type" "add")])