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Re: [PATCH, ARM] Optimise memchr for NEON-enabled processors
- From: Joseph Myers <joseph at codesourcery dot com>
- To: Prakhar Bahuguna <prakhar dot bahuguna at arm dot com>
- Cc: <libc-alpha at sourceware dot org>, <nd at arm dot com>
- Date: Tue, 13 Jun 2017 14:22:52 +0000
- Subject: Re: [PATCH, ARM] Optimise memchr for NEON-enabled processors
- Authentication-results: sourceware.org; auth=none
- References: <20170613092505.rxuxbujpgfq6fbqo@e107464-lin.cambridge.arm.com>
On Tue, 13 Jun 2017, Prakhar Bahuguna wrote:
> Testing done: Ran regression tests for arm-none-linux-gnueabihf as well as a
> full toolchain bootstrap. Benchmark tests were ran on ARMv7-A and ARMv8-A
> hardware targets.
It's important to test string functions for both endiannesses, since they
can easily have endian-specific bugs. You should be able to run string/
tests for big-endian with QEMU userspace emulation, for example, if you
don't have an actual big-endian system to run tests on (some parts of the
glibc testsuite, such as threading tests, may have problems with QEMU
userspace emulation, but for string tests it should be fine).
--
Joseph S. Myers
joseph@codesourcery.com