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[Bug tree-optimization/68599] [6 Regression] gcc.dg/tree-ssa/pr45122.c and tree-vrp.c
- From: "law at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Thu, 03 Dec 2015 15:40:39 +0000
- Subject: [Bug tree-optimization/68599] [6 Regression] gcc.dg/tree-ssa/pr45122.c and tree-vrp.c
- Auto-submitted: auto-generated
- References: <bug-68599-4 at http dot gcc dot gnu dot org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68599
--- Comment #5 from Jeffrey A. Law <law at gcc dot gnu.org> ---
Author: law
Date: Thu Dec 3 15:40:08 2015
New Revision: 231231
URL: https://gcc.gnu.org/viewcvs?rev=231231&root=gcc&view=rev
Log:
[PR tree-optimization/68599] Avoid over-zealous optimization with
-funsafe-loop-optimizations
PR tree-optimization/68599
* loop-init.c (rtl_loop_init): Set LOOPS_HAVE_RECORDED_EXITS
in call to loop_optimizer_init.
* loop-iv.c (get_simple_loop_desc): Only allow unsafe loop
optimization to drop the assumptions/infinite notations if
the loop has a single exit.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/loop-init.c
trunk/gcc/loop-iv.c