On 09/16/2011 04:24 AM, Jakub Jelinek wrote:
> * config/i386/i386.c (ix86_expand_reduc_v4sf): Rename to ...
> (ix86_expand_reduc): ... this. Handle also V8SFmode and V4DFmode.
> * config/i386/sse.md (reduc_splus_v4sf, reduc_smax_v4sf,
> reduc_smin_v4sf): Adjust callers.
>
Hi!
I've noticed that the code generated for -mavx min/max reductions is
terrible, the following patch is an attempt to improve it.
In fad function (i.e. V4DFmode reduction) the difference with the patch
(plus the patch I've posted today) is:
- vmovapd %ymm0, -56(%rsp)
- vmovapd %ymm0
