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Re: Enabling -ftree-slp-vectorize on -O2/Os
- From: Allan Sandfeld Jensen <linux at carewolf dot com>
- To: gcc at gcc dot gnu dot org
- Cc: Richard Biener <richard dot guenther at gmail dot com>
- Date: Tue, 29 May 2018 17:24:44 +0200
- Subject: Re: Enabling -ftree-slp-vectorize on -O2/Os
- References: <2659301.XPQk3P0qmd@twilight> <CAFiYyc3_XbQ5KHHM44XAQyGMZ1aysmX-o=g-UwBA3RmH1YzVLA@mail.gmail.com> <CAFiYyc3EnfcCGuXJEhK4UNDSTW-Eci3ncMfPmED=XyUWGz9qZw@mail.gmail.com>
On Dienstag, 29. Mai 2018 16:57:56 CEST Richard Biener wrote:
>
> so the situation improves but isn't fully fixed (STLF issues maybe?)
>
That raises the question if it helps in these cases even in -O3?
Anyway it doesn't look good for it. Did the binary size at least improve with
prefer-avx128, or was that also worse or insignificant?
'Allan