Andrew I MacIntyre <aimacint...@users.sourceforge.net> added the comment:
Antoine, in my testing the "loss" of the HAS_ARG() optimisation in my patch appears to have negligible cost on i386, but starts to look significant on amd64. On an Intel E8200 cpu running FreeBSD 7.1 amd64, with gcc 7.2.1 and the 3.1a2 sources, the computed goto version is ~8% faster (average time of all rounds) for pybench (with warp factor set to 3 rather than the default 10, to get the round time up over 10s) than without computed gotos. With my patch applied, the computed goto version is ~5.5% faster than without computed gotos by the same measure. On this platform, Pystone rates at ~86k (no computed gotos), ~85k (computed gotos) and ~82k (computed gotos + my patch). For comparison, this machine running Windows XP (32 bit) with the python.org builds rates ~92k pystones for 2.6.1 and ~81k for 3.1a2. Pybench isn't distributed in the MSI installers :-( ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue4753> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
