r256134 - in /trunk/gcc: ChangeLog tree-vect-lo...

[rsandifo@gcc.gnu.org]

Author: rsandifo
Date: Wed Jan  3 07:15:54 2018
New Revision: 256134

URL: https://gcc.gnu.org/viewcvs?rev=256134&root=gcc&view=rev
Log:
poly_int: vectorizable_induction

This patch makes vectorizable_induction cope with variable-length
vectors.  For now we punt on SLP inductions, but patchees after
the main SVE submission add support for those too.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

gcc/
	* tree-vect-loop.c (vectorizable_induction): Treat the number
	of units as polynomial.  Punt on SLP inductions.  Use an integer
	VEC_SERIES_EXPR for variable-length integer reductions.  Use a
	cast of such a series for variable-length floating-point
	reductions.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/tree-vect-loop.c