| To: | Zhang Fuxin <zhangfx@lemote.com> |
|---|---|
| Subject: | Re: [PATCH 2/16] arch related Makefile update for lemote fulong mini-PC |
| From: | Thiemo Seufer <ths@networkno.de> |
| Date: | Mon, 16 Apr 2007 13:44:22 +0100 |
| Cc: | tiansm@lemote.com, linux-mips@linux-mips.org |
| In-reply-to: | <4623387F.3070905@lemote.com> |
| Original-recipient: | rfc822;linux-mips@linux-mips.org |
| References: | <11766507651736-git-send-email-tiansm@lemote.com> <11766507661317-git-send-email-tiansm@lemote.com> <11766507661726-git-send-email-tiansm@lemote.com> <20070415222847.GA1402@networkno.de> <4623387F.3070905@lemote.com> |
| Sender: | linux-mips-bounce@linux-mips.org |
| User-agent: | Mutt/1.5.13 (2006-08-11) |
Zhang Fuxin wrote: > >> +cflags-$(CONFIG_CPU_LOONGSON2) += -march=r4600 -Wa,--trap > > > > I wonder why this is r4600. I heard the Loongson2 is MIPS IV compatible, > > so r5000 / r8000 / r10000 would be better choices. > > Presently Loongson-2E is nearly MIPS III compatible(with some > self-defined extensions), next version will be mips64 release2 compatible. I see. > -march=r4600 is inherited from loongson-1, -march=mips3 might be a > better choice. Maybe. The 'mips3' maps to -march=r4000, it would assume more memory latency and a slower integer divider then -march=r4600. Thiemo |
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