r256089 - in /trunk/gcc: ChangeLog optabs-query...

[rsandifo@gcc.gnu.org]

Author: rsandifo
Date: Tue Jan  2 18:25:45 2018
New Revision: 256089

URL: https://gcc.gnu.org/viewcvs?rev=256089&root=gcc&view=rev
Log:
qimode_for_vec_perm

The vec_perm code falls back to doing byte-level permutes if
element-level permutes aren't supported.  There were two copies
of the code to calculate the mode, and later patches add another,
so this patch splits it out into a helper function.

2018-01-02  Richard Sandiford  <richard.sandiford@linaro.org>

gcc/
	* optabs-query.h (qimode_for_vec_perm): Declare.
	* optabs-query.c (can_vec_perm_p): Split out qimode search to...
	(qimode_for_vec_perm): ...this new function.
	* optabs.c (expand_vec_perm): Use qimode_for_vec_perm.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/optabs-query.c
    trunk/gcc/optabs-query.h
    trunk/gcc/optabs.c