r256135 - in /trunk/gcc: ChangeLog tree-vect-lo...

[rsandifo@gcc.gnu.org]

Author: rsandifo
Date: Wed Jan  3 07:16:00 2018
New Revision: 256135

URL: https://gcc.gnu.org/viewcvs?rev=256135&root=gcc&view=rev
Log:
poly_int: vectorizable_live_operation

This patch makes vectorizable_live_operation cope with variable-length
vectors.  For now we just handle cases in which we can tell at compile
time which vector contains the final result.

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_live_operation): Treat the number
	of units as polynomial.  Punt if we can't tell at compile time
	which vector contains the final result.

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