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[PATCH] powerpc: Optimized POWER8 strlen

From: Carlos Eduardo Seo <cseo at linux dot vnet dot ibm dot com>
To: GLIBC <libc-alpha at sourceware dot org>
Cc: Tulio Magno Quites Machado Filho <tuliom at linux dot vnet dot ibm dot com>, Steve Munroe <munroesj at linux dot vnet dot ibm dot com>
Date: Mon, 28 Mar 2016 16:44:14 -0300
Subject: [PATCH] powerpc: Optimized POWER8 strlen
Authentication-results: sourceware.org; auth=none

Vectorized implementation of strlen for POWER8. This adds significantimprovement for long strings (~3x). There will be a trade-off around the64-byte length due to the alignment checks required to jump into thevectorized loop.


Benchmark results are attached.

--
Carlos Eduardo Seo
Software Engineer - Linux on Power Toolchain
cseo@linux.vnet.ibm.com

Attachment: 0001-powerpc-Optimization-for-strlen-for-POWER8.patch
Description: Text document

Attachment: bench-strlen.txt
Description: Text document

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