[Bug c++/70452] [5/6 Regression] Regression in C++ parsing performance between 4.9.3 and 5.3.1

[ppalka at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70452

--- Comment #9 from Patrick Palka <ppalka at gcc dot gnu.org> ---
Author: ppalka
Date: Tue Apr  5 01:20:00 2016
New Revision: 234732

URL: https://gcc.gnu.org/viewcvs?rev=234732&root=gcc&view=rev
Log:
Remove class cache_map and use ggc hash_maps instead (PR c++/70452)

gcc/cp/ChangeLog:

        PR c++/70452
        * cp-tree.h (class cache_map): Remove.
        * constexpr.c (cv_cache): Change type to
        GTY((deletable)) hash_map<tree, tree> *.
        (maybe_constant_value): Adjust following the change to cv_cache.
        (clear_cv_cache): New static function.
        (clear_cv_and_fold_caches): Use it.
        * cp-gimplify.c (fold_cache): Change type to
        GTY((deletable)) hash_map<tree, tree> *.
        (clear_fold_cache): Adjust following the change to fold_cache.
        (cp_fold): Likewise.


Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/constexpr.c
    trunk/gcc/cp/cp-gimplify.c
    trunk/gcc/cp/cp-tree.h