[Bug rtl-optimization/11488] Pre-regalloc scheduling severely worsens performance

[pthaugen at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=11488

--- Comment #12 from Pat Haugen <pthaugen at gcc dot gnu.org> ---
Author: pthaugen
Date: Wed Dec 21 19:15:32 2016
New Revision: 243866

URL: https://gcc.gnu.org/viewcvs?rev=243866&root=gcc&view=rev
Log:
        PR rtl-optimization/11488
        * common/config/rs6000/rs6000-common.c
        (rs6000_option_optimization_table): Enable -fsched-pressure.
        * config/rs6000/rs6000.c (TARGET_COMPUTE_PRESSURE_CLASSES): Define
        target hook.
        (rs6000_option_override_internal): Set default -fsched-pressure
algorithm.
        (rs6000_compute_pressure_classes): Implement target hook.


Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/common/config/rs6000/rs6000-common.c
    trunk/gcc/config/rs6000/rs6000.c