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Re: [PATCH] Fix part of PR48037
- From: Andrew Pinski <pinskia at gmail dot com>
- To: Richard Guenther <rguenther at suse dot de>
- Cc: gcc-patches at gcc dot gnu dot org
- Date: Tue, 15 Mar 2011 16:44:24 -0700
- Subject: Re: [PATCH] Fix part of PR48037
- References: <alpine.LNX.2.00.1103151318070.25982@zhemvz.fhfr.qr>
On Tue, Mar 15, 2011 at 5:19 AM, Richard Guenther <rguenther@suse.de> wrote:
>
> This avoids spilling SSE registers to memory just because we access
> vector components in a C array way. ÂThe trick is to simply rewrite
> those accesses to proper vector selects on the tree level and promote
> the vector to SSA form.
>
> Bootstrapped and tested on x86_64-unknown-linux-gnu, applied to trunk.
I think this fixes comment # 1 in PR 28367 and maybe even that PR.
I think you should do the same for complex too (well use REAL_EXPR and
IMAG_EXPR instead) (the complex issue was mention in comment #2 in PR
26134 and IIRC that shows up in damn benchmark as part of SPEC 2k6).
Thanks,
Andrew Pinski