[Bug tree-optimization/90316] [8/9 Regression] large compile time increase in opt / alias stmt walking for Go example

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90316

--- Comment #31 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Mon May 13 11:22:21 2019
New Revision: 271124

URL: https://gcc.gnu.org/viewcvs?rev=271124&root=gcc&view=rev
Log:
2019-05-13  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/90316
        * tree-ssa-pre.c (insert_aux): Fold into ...
        (insert): ... this function.  Use a RPO walk to reduce the
        number of required iterations.

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