r216736 - in /trunk/gcc: ChangeLog expr.c fold-...

[alalaw01@gcc.gnu.org]

Author: alalaw01
Date: Mon Oct 27 14:04:43 2014
New Revision: 216736

URL: https://gcc.gnu.org/viewcvs?rev=216736&root=gcc&view=rev
Log:
[Vectorizer] Make REDUC_xxx_EXPR tree codes produce a scalar result

	PR tree-optimization/61114
	* expr.c (expand_expr_real_2): For REDUC_{MIN,MAX,PLUS}_EXPR, add
	extract_bit_field around optab result.

	* fold-const.c (fold_unary_loc): For REDUC_{MIN,MAX,PLUS}_EXPR, produce
	scalar not vector.

	* tree-cfg.c (verify_gimple_assign_unary): Check result vs operand type
	for REDUC_{MIN,MAX,PLUS}_EXPR.

	* tree-vect-loop.c (vect_analyze_loop): Update comment.
	(vect_create_epilog_for_reduction): For direct vector reduction, use
	result of tree code directly without extract_bit_field.

	* tree.def (REDUC_MAX_EXPR, REDUC_MIN_EXPR, REDUC_PLUS_EXPR): Update
	comment.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/expr.c
    trunk/gcc/fold-const.c
    trunk/gcc/tree-cfg.c
    trunk/gcc/tree-vect-loop.c
    trunk/gcc/tree.def