[Bug tree-optimization/77848] Gimple if-conversion results in redundant comparisons

[wschmidt at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77848

--- Comment #23 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
Author: wschmidt
Date: Wed Nov 16 22:17:10 2016
New Revision: 242520

URL: https://gcc.gnu.org/viewcvs?rev=242520&root=gcc&view=rev
Log:
2016-11-16  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>

        PR tree-optimization/77848
        * tree-if-conv.c (version_loop_for_if_conversion): When versioning
        an outer loop, only save basic block aux information for the inner
        loop.
        (versionable_outer_loop_p): New function.
        (tree_if_conversion): Version the outer loop instead of the inner
        one if the pattern will be recognized for outer-loop
        vectorization.


Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/tree-if-conv.c