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[Bug target/63503] [AArch64] A57 executes fused multiply-add poorly in some situations
- 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: Thu, 09 Oct 2014 23:08:40 +0000
- Subject: [Bug target/63503] [AArch64] A57 executes fused multiply-add poorly in some situations
- Auto-submitted: auto-generated
- References: <bug-63503-4 at http dot gcc dot gnu dot org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63503
--- Comment #5 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Also how sure are you that it is the fused multiply-add and not the scheduling
of the instructions? As I mentioned, try swapping the cmp and fmadd; you might
get a performance boost.