r242210 - in /branches/ARM/sve-branch/gcc: emit...

[rsandifo@gcc.gnu.org]

Author: rsandifo
Date: Fri Nov 11 17:19:22 2016
New Revision: 242210

URL: https://gcc.gnu.org/viewcvs?rev=242210&root=gcc&view=rev
Log:
Add rtx const vec_duplicate helpers

This patch adds a function is_const_vec_duplicate that tests
whether a constant vector rtx broadcasts a single scalar value
to all elements.  It also adds a function gen_const_vec_duplicate
that creates such an rtx.

Modified:
    branches/ARM/sve-branch/gcc/emit-rtl.c
    branches/ARM/sve-branch/gcc/emit-rtl.h
    branches/ARM/sve-branch/gcc/simplify-rtx.c
    branches/ARM/sve-branch/gcc/tree-vect-slp.c