toolchain/gcc/patches/9.1.0/970-recompute-dom-fast-queries-before-vn.patch

   1 From f36b864c7d84b36883c6190c83b31c0a8c15172b Mon Sep 17 00:00:00 2001
   2 From: rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4>
   3 Date: Fri, 3 May 2019 11:22:33 +0000
   4 Subject: [PATCH] 2019-05-03  Richard Biener  <rguenther@suse.de>
   5
   6         PR tree-optimization/90316
   7         * tree-ssa-pre.c (pass_pre::execute): Re-compute DOM fast queries
   8         before running VN.
   9
  10
  11 git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-9-branch@270849 138bc75d-0d04-0410-961f-82ee72b054a4
  12 ---
  13  gcc/ChangeLog      | 6 ++++++
  14  gcc/tree-ssa-pre.c | 1 +
  15  2 files changed, 7 insertions(+)
  16
  17 --- a/gcc/ChangeLog
  18 +++ b/gcc/ChangeLog
  19 @@ -1,3 +1,9 @@
  20 +2019-05-03  Richard Biener  <rguenther@suse.de>
  21 +
  22 +       PR tree-optimization/90316
  23 +       * tree-ssa-pre.c (pass_pre::execute): Re-compute DOM fast queries
  24 +       before running VN.
  25 +
  26  2019-05-03  Release Manager
  27
  28         * GCC 9.1.0 released.
  29 --- a/gcc/tree-ssa-pre.c
  30 +++ b/gcc/tree-ssa-pre.c
  31 @@ -4197,6 +4197,7 @@ pass_pre::execute (function *fun)
  32    loop_optimizer_init (LOOPS_NORMAL);
  33    split_critical_edges ();
  34    scev_initialize ();
  35 +  calculate_dominance_info (CDI_DOMINATORS);
  36
  37    run_rpo_vn (VN_WALK);
  38