https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61114
--- Comment #10 from alalaw01 at gcc dot gnu.org --- Author: alalaw01 Date: Mon Oct 27 14:20:52 2014 New Revision: 216737 URL: https://gcc.gnu.org/viewcvs?rev=216737&root=gcc&view=rev Log: Add new optabs for reducing vectors to scalars PR tree-optimization/61114 * doc/md.texi (Standard Names): Add reduc_(plus,[us](min|max))|scal optabs, and note in reduc_[us](plus|min|max) to prefer the former. * expr.c (expand_expr_real_2): Use reduc_..._scal if available, fall back to old reduc_... + BIT_FIELD_REF only if not. * optabs.c (optab_for_tree_code): for REDUC_(MAX,MIN,PLUS)_EXPR, return the reduce-to-scalar (reduc_..._scal) optab. (scalar_reduc_to_vector): New. * optabs.def (reduc_smax_scal_optab, reduc_smin_scal_optab, reduc_plus_scal_optab, reduc_umax_scal_optab, reduc_umin_scal_optab): New. * optabs.h (scalar_reduc_to_vector): Declare. * tree-vect-loop.c (vectorizable_reduction): Look for optabs reducing to either scalar or vector. Modified: trunk/gcc/ChangeLog trunk/gcc/doc/md.texi trunk/gcc/expr.c trunk/gcc/optabs.c trunk/gcc/optabs.def trunk/gcc/optabs.h trunk/gcc/tree-vect-loop.c
