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Re: [PATCH v3 04/18] Add string vectorized find and detection functions

From: Paul Eggert <eggert at cs dot ucla dot edu>
To: Adhemerval Zanella <adhemerval dot zanella at linaro dot org>, libc-alpha at sourceware dot org
Date: Thu, 11 Jan 2018 17:08:50 -0800
Subject: Re: [PATCH v3 04/18] Add string vectorized find and detection functions
Authentication-results: sourceware.org; auth=none
References: <1515588482-15744-1-git-send-email-adhemerval.zanella@linaro.org> <1515588482-15744-5-git-send-email-adhemerval.zanella@linaro.org> <b1c55ccd-24d4-1f68-61c8-87f486389b6f@cs.ucla.edu> <69b77164-ba4f-6847-ec93-164fe3f22662@linaro.org>

On 01/11/2018 10:54 AM, Adhemerval Zanella wrote:

The Gnulib integer_length module has a faster implementation, at least for 32-bit platforms. Do we still care about 32-bit platforms? If so, you might want to take a look at it.

Do you mean the version which uses double to integer, the one with 6 comparisons
or the naive one?

I meant the one that converts int to double. It can be branchless sincewe assume the int is nonzero.

Follow-Ups:
- Re: [PATCH v3 04/18] Add string vectorized find and detection functions
  - From: Joseph Myers

References:
- [PATCH v3 00/18] Improve generic string routines
  - From: Adhemerval Zanella
- [PATCH v3 04/18] Add string vectorized find and detection functions
  - From: Adhemerval Zanella
- Re: [PATCH v3 04/18] Add string vectorized find and detection functions
  - From: Paul Eggert
- Re: [PATCH v3 04/18] Add string vectorized find and detection functions
  - From: Adhemerval Zanella

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