[Bug tree-optimization/90930] Excessive memory consumption

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90930

--- Comment #19 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Mon Nov 11 16:07:54 2019
New Revision: 278059

URL: https://gcc.gnu.org/viewcvs?rev=278059&root=gcc&view=rev
Log:
2019-11-11  Richard Biener  <rguent...@suse.de>

        Backport from mainline
        2019-06-25  Richard Biener  <rguent...@suse.de>

        PR tree-optimization/90930
        * tree-ssa-reassoc.c (reassociate_bb): Only rewrite expression
        into parallel form in the last pass instance.

        * gcc.dg/tree-ssa/reassoc-24.c: Adjust.
        * gcc.dg/tree-ssa/reassoc-25.c: Likewise.

Modified:
    branches/gcc-9-branch/gcc/ChangeLog
    branches/gcc-9-branch/gcc/testsuite/ChangeLog
    branches/gcc-9-branch/gcc/testsuite/gcc.dg/tree-ssa/reassoc-24.c
    branches/gcc-9-branch/gcc/testsuite/gcc.dg/tree-ssa/reassoc-25.c
    branches/gcc-9-branch/gcc/tree-ssa-reassoc.c