r252933 - in /trunk/gcc: ChangeLog testsuite/Ch...

[rsandifo@gcc.gnu.org]

Author: rsandifo
Date: Mon Sep 18 15:39:21 2017
New Revision: 252933

URL: https://gcc.gnu.org/viewcvs?rev=252933&root=gcc&view=rev
Log:
Include phis in SLP unrolling calculation

Without this we'd pick an unrolling factor based purely on longs,
ignoring the ints.  It's posssible that vect_get_smallest_scalar_type
should also handle shifts, but I think we'd still want this as a
belt-and-braces fix.

2017-09-18  Richard Sandiford  <richard.sandiford@linaro.org>

gcc/
	* tree-vect-slp.c (vect_record_max_nunits): New function,
	split out from...
	(vect_build_slp_tree_1): ...here.
	(vect_build_slp_tree_2): Call it for phis too.

gcc/testsuite/
	* gcc.dg/vect/slp-multitypes-13.c: New test.

Added:
    trunk/gcc/testsuite/gcc.dg/vect/slp-multitypes-13.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-vect-slp.c