[Bug tree-optimization/83202] Try joining operations on consecutive array elements during tree vectorization

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83202

--- Comment #8 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Thu Nov 30 07:53:31 2017
New Revision: 255267

URL: https://gcc.gnu.org/viewcvs?rev=255267&root=gcc&view=rev
Log:
2017-11-30  Richard Biener  <rguent...@suse.de>

        PR tree-optimization/83202
        * tree-ssa-loop-ivcanon.c (try_unroll_loop_completely): Add
        allow_peel argument and guard peeling.
        (canonicalize_loop_induction_variables): Likewise.
        (canonicalize_induction_variables): Pass false.
        (tree_unroll_loops_completely_1): Pass unroll_outer to disallow
        peeling from cunrolli.

        * gcc.dg/vect/pr83202-1.c: New testcase.
        * gcc.dg/tree-ssa/pr61743-1.c: Adjust.

Added:
    trunk/gcc/testsuite/gcc.dg/vect/pr83202-1.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/gcc.dg/tree-ssa/pr61743-1.c
    trunk/gcc/tree-ssa-loop-ivcanon.c