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Re: [SH] Split addi,subdi,negdi before reload
- From: Kaz Kojima <kkojima at rr dot iij4u dot or dot jp>
- To: oleg dot endo at t-online dot de
- Cc: gcc-patches at gcc dot gnu dot org
- Date: Wed, 06 Nov 2013 07:58:56 +0900 (JST)
- Subject: Re: [SH] Split addi,subdi,negdi before reload
- Authentication-results: sourceware.org; auth=none
- References: <1383652804 dot 2445 dot 395 dot camel at yam-132-YW-E178-FTW>
Oleg Endo <oleg.endo@t-online.de> wrote:
> It seems that splitting multi-word insns before reload results in
> slightly better code on average (according to CSiBE). The attached
> patch implements that.
> Tested on rev. 204263 with
> make -k -j4 check RUNTESTFLAGS="--target_board=sh-sim
> \{-m2/-ml,-m2/-mb,-m2a/-mb,-m2a-single/-mb,-m4/-ml,-m4/-mb,-m4-single/
> -ml,-m4-single/-mb,-m4a-single/-ml,-m4a-single/-mb}"
>
> and no new failures. However, as far as I recall there have been some
> issues with this in the past, I just can't find/remember what it was
> exactly. Kaz, could you please run it through your test setup, too and
> let me know if it's OK for trunk?
No new failures on sh4-unknown-linux-gnu. The patch is OK.
Regards,
kaz