[Bug rtl-optimization/87047] [7/8/9/10 Regression] performance regression because of if-conversion

[amonakov at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87047

--- Comment #14 from Alexander Monakov <amonakov at gcc dot gnu.org> ---
Author: amonakov
Date: Wed Oct  2 15:37:12 2019
New Revision: 276466

URL: https://gcc.gnu.org/viewcvs?rev=276466&root=gcc&view=rev
Log:
ifcvt: improve cost estimation (PR 87047)

        PR rtl-optimization/87047
        * ifcvt.c (average_cost): New static function.  Use it...
        (noce_process_if_block): ... here.

testsuite/
        * gcc.dg/pr87047.c: New test.

Added:
    trunk/gcc/testsuite/gcc.dg/pr87047.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/ifcvt.c
    trunk/gcc/ifcvt.h
    trunk/gcc/testsuite/ChangeLog