This is the mail archive of the libc-alpha@sourceware.org mailing list for the glibc project.

Index Nav:	[Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav:	[Date Prev] [Date Next]	[Thread Prev] [Thread Next]
Other format:	[Raw text]

Re: [PATCH v2 05/15] RISC-V: Generic <string.h> Routines

From: Palmer Dabbelt <palmer at dabbelt dot com>
To: joseph at codesourcery dot com
Cc: libc-alpha at sourceware dot org, Andrew Waterman <andrew at sifive dot com>, Darius Rad <darius at bluespec dot com>, dj at redhat dot com
Date: Sat, 23 Dec 2017 14:01:13 -0800 (PST)
Subject: Re: [PATCH v2 05/15] RISC-V: Generic <string.h> Routines
Authentication-results: sourceware.org; auth=none

On Wed, 20 Dec 2017 08:48:15 PST (-0800), joseph@codesourcery.com wrote:

On Tue, 19 Dec 2017, Palmer Dabbelt wrote:

This patch contains fast versions of the various routines from string.h
that have been implemented for RISC-V.  Since RISC-V doesn't define any
specific performance characteristics they're not optimized for any
particular microarchitecture, but are designed to be generally good.


I would again suggest deferring adding such functions, especially the C
ones, and instead helping with updating / reviewing RTH's optimized
generic string functions posted a while back, and only adding
RISC-V-specific ones if there is some clear reason RISC-V needs something
non-generic for optimal performance.

Yes, that makes sense -- I think I forgot last time because they hadn't gone inyet. We'll just use the generic ones for now, I'll add it to my TODO list tomake sure they're generating good code for RISC-V.

References:
- Re: [PATCH v2 05/15] RISC-V: Generic <string.h> Routines
  - From: Joseph Myers

Index Nav:	[Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav:	[Date Prev] [Date Next]	[Thread Prev] [Thread Next]