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[Bug tree-optimization/81403] [8 Regression] wrong code at -O3
- From: "rguenth at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Thu, 23 Nov 2017 08:33:10 +0000
- Subject: [Bug tree-optimization/81403] [8 Regression] wrong code at -O3
- Auto-submitted: auto-generated
- References: <bug-81403-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81403
--- Comment #9 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Thu Nov 23 08:30:41 2017
New Revision: 255092
URL: https://gcc.gnu.org/viewcvs?rev=255092&root=gcc&view=rev
Log:
2017-11-23 Richard Biener <rguenther@suse.de>
PR tree-optimization/81403
* tree-ssa-pre.c (get_representative_for): Add parameter specifying
a block we need a leader relative to.
(phi_translate_1): For nary processing require a leader from
get_representative_for given we run expression simplification
using match-and-simplify. Remove previous fix.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/tree-ssa-pre.c