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[Bug tree-optimization/81673] Harmful SLP vectorization
- From: "pinskia at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Wed, 02 Aug 2017 14:34:21 +0000
- Subject: [Bug tree-optimization/81673] Harmful SLP vectorization
- Auto-submitted: auto-generated
- References: <bug-81673-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81673
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
What happens if you use -march=intel. Maybe the cost should have adjusted only
for the case where moving between the register set is cheap (I forgot the
internal tuning name for this case).