Gentoo Archives: gentoo-dev

From: Pacho Ramos <pacho@g.o>
To: gentoo-dev@l.g.o
Subject: Re: [gentoo-dev] RFC: new global USE flag: jit
Date: Mon, 14 May 2012 18:53:26
Message-Id: 1337021337.19402.11.camel@belkin4
In Reply to: Re: [gentoo-dev] RFC: new global USE flag: jit by Agostino Sarubbo
El lun, 14-05-2012 a las 20:09 +0200, Agostino Sarubbo escribió:
> On Monday 14 May 2012 14:05:12 Alexandre Rostovtsev wrote: > > I propose adding the following global USE flag: > > > > jit - Enable just-in-time compilation for improved performance. May > > prevent use of some PaX memory protection features in Gentoo Hardened. > > > > > > Current local flags that could probably be unified: > > > > app-arch/libzpaq:jit - Enable just-in-time compilation for faster > > compression (requires SSE2) > > > > dev-libs/libpcre:jit - Enable Just-In-Time compilation of regexp > > bytecode to machine code, through the SLJIT compiler. This feature might > > conflict wtih security mitigation strategies such as NX/PaX as enabled > > by Gentoo Hardened. > > > > dev-python/pypy:jit - Enable the JIT compiler > > > > dev-scheme/racket:jit - Enable just-in-time compiler > > > > media-sound/csound:luajit - Use the lua just-in-time compiler > > dev-lang/luajit instead of dev-lang/lua > > > > net-libs/webkit-gtk:jit - Enable JIT javascript compiler (disabling it > > will cause performance penalty) > > > > www-client/epiphany:jit - Allow using net-libs/webkit-gtk that has the > > JIT javascript compiler enabled > > > > www-client/luakit:luajit - Use the lua just-in-time compiler > > dev-lang/luajit instead of dev-lang/lua, which should make luakit > > faster. > > > > www-client/seamonkey:methodjit - Enable JIT for JavaScript using > > MethodJIT for faster JS performance. Hardened users can disable this > > USE-flag to use MPROTECT on grsecurity kernels. > > > > www-servers/nginx:pcre-jit - Enable JIT for pcre > > > > x11-libs/qt-core:jit - Enables JIT for Javascript usage inside Qt > > > > x11-libs/qt-script:jit - Enables JIT for Javascript usage inside Qt > > > > x11-libs/qt-webkit:jit - Enable JavaScriptCore just-in-time compiler for > > faster JavaScript execution > > > > -Alexandre. > +1
+1 also ;)

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