[ARC] Add/update combiner patterns.

gcc/
2018-01-26  Claudiu Zissulescu  <claziss@synopsys.com>

	* config/arc/arc.md (add_shift): New pattern.
	(add_shift2): Likewise.
	(sub_shift): Likewise.
	(sub_shift_cmp0_noout): Likewise.
	(compare_si_ashiftsi): Likewise.
	(xbfu_cmp0_noout): New combine pattern.
	(xbfu_cmp0"): Likewise.
	(movsi_set_cc_insn): Place the predicable variant first.
	(commutative_binary_cmp0_noout): Remove clobber.
	(commutative_binary_cmp0): New pattern.
	(noncommutative_binary_cmp0): Likewise.
	(noncommutative_binary_cmp0_noout): Likewise.
	(noncommutative_binary_comparison_result_used): Removed.
	(rsub_cmp0): New pattern.
	(rsub_cmp0_noout): Likewise.
	(extzvsi): Changed, keep only meaningful variants.
	(SQH, SEZ): New iterators.
	(SQH_postfix): New mode attribute.
	(SEZ_prefix): New code attribute.
	(<SEZ_prefix>xt<SQH_postfix>_cmp0_noout): New instruction pattern.
	(<SEZ_prefix>xt<SQH_postfix>_cmp0): Likewise.
	* config/arc/predicates.md (cc_set_register): Use CC_REG instead
	of numerical value.
	(noncommutative_operator): Check the availability of barrel
	shifter option.

From-SVN: r259237

gcc/ChangeLog

+2018-04-09  Claudiu Zissulescu  <claziss@synopsys.com>
+
+	* config/arc/arc.md (add_shift): New pattern.
+	(add_shift2): Likewise.
+	(sub_shift): Likewise.
+	(sub_shift_cmp0_noout): Likewise.
+	(compare_si_ashiftsi): Likewise.
+	(xbfu_cmp0_noout): New combine pattern.
+	(xbfu_cmp0"): Likewise.
+	(movsi_set_cc_insn): Place the predicable variant first.
+	(commutative_binary_cmp0_noout): Remove clobber.
+	(commutative_binary_cmp0): New pattern.
+	(noncommutative_binary_cmp0): Likewise.
+	(noncommutative_binary_cmp0_noout): Likewise.
+	(noncommutative_binary_comparison_result_used): Removed.
+	(rsub_cmp0): New pattern.
+	(rsub_cmp0_noout): Likewise.
+	(extzvsi): Changed, keep only meaningful variants.
+	(SQH, SEZ): New iterators.
+	(SQH_postfix): New mode attribute.
+	(SEZ_prefix): New code attribute.
+	(<SEZ_prefix>xt<SQH_postfix>_cmp0_noout): New instruction pattern.
+	(<SEZ_prefix>xt<SQH_postfix>_cmp0): Likewise.
+	* config/arc/predicates.md (cc_set_register): Use CC_REG instead
+	of numerical value.
+	(noncommutative_operator): Check the availability of barrel
+	shifter option.
+
 2018-04-09  Richard Biener  <rguenther@suse.de>
 
 	PR tree-optimization/85284

gcc/config/arc/predicates.md

@@ -522,7 +522,7 @@
 	return FALSE;
     }
 
-  if (REGNO (op) != 61)
+  if (REGNO (op) != CC_REG)
     return FALSE;
   if (mode == rmode
       || (mode == CC_ZNmode && rmode == CC_Zmode)
@@ -609,7 +609,9 @@
 )
 
 (define_predicate "noncommutative_operator"
-  (ior (match_code "minus,ashift,ashiftrt,lshiftrt,rotatert")
+  (ior (and (match_code "ashift,ashiftrt,lshiftrt,rotatert")
+	    (match_test "TARGET_BARREL_SHIFTER"))
+       (match_code "minus")
        (and (match_code "ss_minus")
 	    (match_test "TARGET_ARC700 || TARGET_EA_SET")))
 )