r242181 - in /branches/ARM/sve-branch/gcc: cfge...

[rsandifo@gcc.gnu.org]

Author: rsandifo
Date: Fri Nov 11 17:14:05 2016
New Revision: 242181

URL: https://gcc.gnu.org/viewcvs?rev=242181&root=gcc&view=rev
Log:
Make more use of GET_MODE_UNIT_PRECISION

This patch is like the earlier GET_MODE_UNIT_SIZE one,
but for precisions rather than sizes.  There is one behavioural
change in expand_debug_expr: we shouldn't use lowpart subregs
for non-scalar truncations, since that would just reinterpret
some of the scalars and drop the rest.  (This probably doesn't
trigger in practice.)  Using TRUNCATE is fine for scalars,
since simplify_gen_unary knows when a subreg can be used.

Modified:
    branches/ARM/sve-branch/gcc/cfgexpand.c
    branches/ARM/sve-branch/gcc/combine.c
    branches/ARM/sve-branch/gcc/cse.c
    branches/ARM/sve-branch/gcc/expmed.c
    branches/ARM/sve-branch/gcc/optabs.c
    branches/ARM/sve-branch/gcc/simplify-rtx.c