[Bug tree-optimization/62291] PRE uses too much memory and compile-time

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62291

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Fri Aug 29 12:39:50 2014
New Revision: 214727

URL: https://gcc.gnu.org/viewcvs?rev=214727&root=gcc&view=rev
Log:
2014-08-29  Richard Biener  <rguent...@suse.de>

    PR tree-optimization/62291
    * tree-ssa-pre.c (sorted_array_from_bitmap_set): Reserve
    exactly the vector size needed and use quick_push.
    (phi_translate_1): Adjust comment.
    (valid_in_sets): Remove block argument and remove pointless
    checking of NAMEs.
    (dependent_clean): Adjust for removal of block argument.
    (clean): Likewise.
    (compute_antic_aux): Likewise.
    (compute_partial_antic_aux): Likewise.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/tree-ssa-pre.c