Wireshark-dev: Re: [Wireshark-dev] epan/asm_utils* and NASM

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From: Graham Bloice <graham.bloice@xxxxxxxxxxxxx>
Date: Mon, 16 Oct 2017 11:05:04 +0100


On 13 October 2017 at 21:50, Gerald Combs <gerald@xxxxxxxxxxxxx> wrote:
Before we migrated away from NMake, epan/Makefile.nmake built the assembly versions of various routines for x86 (but not x64) defined in epan/asm_utils_win32_x86.asm. Should we resurrect it in epan/CMakeLists.txt or get rid of it along with the NASM download in tools/win-setup.ps1?


I was vaguely under the impression that compiler intrinsics were the way forward for these kind of things and somewhere have a branch where I started to play with them for VS.  Presumably we'd hide the compiler specific implementations behind an abstraction.

However, I don't see much point in attempting to optimise things without measuring what we're trying to optimise, i.e. we need some form of benchmark.

--
Graham Bloice