re PR tree-optimization/64946 ([AArch64] gcc.target/aarch64/vect-abs-compile.c - "abs" vectorization fails for char/short types)

gcc/ChangeLog:

2018-06-16  Kugan Vivekanandarajah  <kuganv@linaro.org>

	PR middle-end/64946
	* cfgexpand.c (expand_debug_expr): Hande ABSU_EXPR.
	* config/i386/i386.c (ix86_add_stmt_cost): Likewise.
	* dojump.c (do_jump): Likewise.
	* expr.c (expand_expr_real_2): Check operand type's sign.
	* fold-const.c (const_unop): Handle ABSU_EXPR.
	(fold_abs_const): Likewise.
	* gimple-pretty-print.c (dump_unary_rhs): Likewise.
	* gimple-ssa-backprop.c (backprop::process_assign_use): Likesie.
	(strip_sign_op_1): Likesise.
	* match.pd: Add new pattern to generate ABSU_EXPR.
	* optabs-tree.c (optab_for_tree_code): Handle ABSU_EXPR.
	* tree-cfg.c (verify_gimple_assign_unary): Likewise.
	* tree-eh.c (operation_could_trap_helper_p): Likewise.
	* tree-inline.c (estimate_operator_cost): Likewise.
	* tree-pretty-print.c (dump_generic_node): Likewise.
	* tree-vect-patterns.c (vect_recog_sad_pattern): Likewise.
	* tree.def (ABSU_EXPR): New.

gcc/c-family/ChangeLog:

2018-06-16  Kugan Vivekanandarajah  <kuganv@linaro.org>

	* c-common.c (c_common_truthvalue_conversion): Handle ABSU_EXPR.

gcc/c/ChangeLog:

2018-06-16  Kugan Vivekanandarajah  <kuganv@linaro.org>

	* c-typeck.c (build_unary_op): Handle ABSU_EXPR;
	* gimple-parser.c (c_parser_gimple_statement): Likewise.
	(c_parser_gimple_unary_expression): Likewise.

gcc/cp/ChangeLog:

2018-06-16  Kugan Vivekanandarajah  <kuganv@linaro.org>

	* constexpr.c (potential_constant_expression_1): Handle ABSU_EXPR.
	* cp-gimplify.c (cp_fold): Likewise.

gcc/testsuite/ChangeLog:

2018-06-16  Kugan Vivekanandarajah  <kuganv@linaro.org>

	PR middle-end/64946
	* gcc.dg/absu.c: New test.
	* gcc.dg/gimplefe-29.c: New test.
	* gcc.target/aarch64/pr64946.c: New test.

From-SVN: r261681