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RE: Patch for faster memcpy on MIPS

From: "Ellcey, Steve" <sellcey at mips dot com>
To: Steven Bosscher <stevenb dot gcc at gmail dot com>, Andrew Pinski <apinski at cavium dot com>, "rdsandiford at googlemail dot com" <rdsandiford at googlemail dot com>
Cc: "newlib at sourceware dot org" <newlib at sourceware dot org>
Date: Wed, 2 Jan 2013 18:25:54 +0000
Subject: RE: Patch for faster memcpy on MIPS
References: <CABu31nPf8OGoTkcekJEAvbU9GrJHBsCyzmegpaKPLDaxyLD0Rw@mail.gmail.com> <B3A978AD3152E64BBBA356E6778FB9978963D5@exchdb03.mips.com>,<CABu31nPFXqWP4Tj0KLPMSUbPJzSgth1a_SaWx8830+=rMg++5A@mail.gmail.com>

AFAIU, there's something with the register numbers not right for the case,

+#if _MIPS_SIM==_ABIN32 || _MIPS_SIM==_ABI64 || _MIPS_SIM==_ABIEABI

but my MIPS-foo is limited to knowing "MIPS" some kind of acronym :-)
So I've added apinski to the conversation.

Ciao!
Steven

------------------------

I think I will add Richard Sandiford too.  I don't know why regdef.h in newlib would use the same register names for the EABI as for the N32 and 64 bit ABIs but there may be reasons I am not aware of.

I have reproduced the problem, I am going to try and rebuild after removing
'|| _MIPS_SIM==_ABIEABI' from regdef.h and see if things build once I have done that.

Steve Ellcey
sellcey@mips.com

Follow-Ups:
- RE: Patch for faster memcpy on MIPS
  - From: Ellcey, Steve
- Re: Patch for faster memcpy on MIPS
  - From: Richard Sandiford

References:
- RE: Patch for faster memcpy on MIPS
  - From: Ellcey, Steve
- Re: Patch for faster memcpy on MIPS
  - From: Steven Bosscher

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