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Re: Enabling -ftree-slp-vectorize on -O2/Os
- From: Florian Weimer <fw at deneb dot enyo dot de>
- To: Allan Sandfeld Jensen <linux at carewolf dot com>
- Cc: gcc at gcc dot gnu dot org
- Date: Sat, 26 May 2018 14:24:38 +0200
- Subject: Re: Enabling -ftree-slp-vectorize on -O2/Os
- References: <2659301.XPQk3P0qmd@twilight>
* Allan Sandfeld Jensen:
> Anythhing else I should test or report?
Interaction with -mstackrealign on i386, where it is required for
system libraries to support applications which use the legacy ABI
without stack alignment if you compile with -msse2 or -march=x86-64
-mtune=generic (and -mfpmath=sse).