[Bug rtl-optimization/78634] [7 Regression] 30% performance drop after r242832.

[bernds at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78634

--- Comment #2 from Bernd Schmidt <bernds at gcc dot gnu.org> ---
Author: bernds
Date: Mon Jan 23 16:17:33 2017
New Revision: 244816

URL: https://gcc.gnu.org/viewcvs?rev=244816&root=gcc&view=rev
Log:
        PR rtl-optimization/78634
        * config/i386/i386.c (ix86_max_noce_ifcvt_seq_cost): New function.
        (TARGET_MAX_NOCE_IFCVT_SEQ_COST): Define.
        * ifcvt.c (noce_try_cmove): Add missing cost check.

testsuite/
        PR rtl-optimization/78634
        * gcc.target/i386/funcspec-11.c: Also pass -mtune=i686.


Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/i386/i386.c
    trunk/gcc/ifcvt.c
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/gcc.target/i386/funcspec-11.c