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[Bug tree-optimization/69719] [5/6 Regression] wrong code at -O3 on x86_64-linux-gnu
- 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: Mon, 08 Feb 2016 12:11:51 +0000
- Subject: [Bug tree-optimization/69719] [5/6 Regression] wrong code at -O3 on x86_64-linux-gnu
- Auto-submitted: auto-generated
- References: <bug-69719-4 at http dot gcc dot gnu dot org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69719
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
It's a broken runtime alias check. Probably no longer latent since
2015-11-10 James Greenhalgh <james.greenhalgh@arm.com>
Partial backport from trunk r228751.
PR tree-optimization/68238
2015-10-13 Richard Biener <rguenther@suse.de>
* tree-vect-loop.c (vect_estimate_min_profitable_iters): Use
LOOP_VINFO_COMP_ALIAS_DDRS to estimate alias versioning cost.
on the branch.