r265812 - in /trunk/gcc: ChangeLog testsuite/Ch...

[rguenth@gcc.gnu.org]

Author: rguenth
Date: Mon Nov  5 14:55:53 2018
New Revision: 265812

URL: https://gcc.gnu.org/viewcvs?rev=265812&root=gcc&view=rev
Log:
2018-11-05  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/87873
	* tree-ssa-loop-manip.h (split_loop_exit_edge): Add copy_constants_p
	argument.
	* tree-ssa-loop-manip.c (split_loop_exit_edge): Likewise.
	* tree-vect-loop.c (vect_transform_loop): When splitting the
	loop exit also create forwarder PHIs for constants.
	* tree-vect-loop-manip.c (slpeel_duplicate_current_defs_from_edges):
	Handle constant to_arg, add extra checking we match up the correct
	PHIs.

	* gcc.dg/pr87873.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/pr87873.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-loop-manip.c
    trunk/gcc/tree-ssa-loop-manip.h
    trunk/gcc/tree-vect-loop-manip.c
    trunk/gcc/tree-vect-loop.c