FYI, following up on this work, I’ll soon land patches that relies on the probe mechanism being available. So, I will now make the JIT probe (MASM_PROBE) a mandatory feature in order to enable the DFG and FTL (see https://bugs.webkit.org/show_bug.cgi?id=175446 <https://bugs.webkit.org/show_bug.cgi?id=175446>). As a consequence, I’ll be disabling the DFG for the MIPS port in this patch.
Mark > On Jul 19, 2017, at 9:52 AM, Mark Lam <mark....@apple.com> wrote: > > > >> On Jul 19, 2017, at 9:49 AM, Konstantin Tokarev <annu...@yandex.ru> wrote: >> >> >> >> 19.07.2017, 02:49, "Mark Lam" <mark....@apple.com>: >>> FYI, I’m looking into making OSR exits work in a more memory efficient way >>> using the JIT probe mechanism. Once we make this transition, the DFG and >>> FTL will not work for any CPU targets that don’t support the JIT probe >>> mechanism. The API to the JIT probe will probably change as well as this >>> work progresses. I’ll take care of updating all the probe implementations >>> for ARM and x86 variants. >>> >>> AFAICT, only CPU(MIPS) does not currently support the probe mechanism. >>> It’s up to the MIPS folks to implement that support if they want to >>> continue to use the DFG. Feel free to contact me if you have questions >>> regarding the probe mechanism. >>> >>> This work will be tracked in https://bugs.webkit.org/show_bug.cgi?id=174645. >> >> Could you elaborate, what code needs to be implemented for MIPS? > > See everything guarded by ENABLE(MASM_PROBE) in MacroAssemblerX86Common.cpp. > You’ll need to have the equivalent for MIPS. Eventually, we may need some > additional changes as well, but that depends on the solution currently being > investigated. > > Mark > >> >>> >>> Thanks. >>> >>> Mark >>> >>> , >>> >>> _______________________________________________ >>> webkit-dev mailing list >>> webkit-dev@lists.webkit.org >>> https://lists.webkit.org/mailman/listinfo/webkit-dev >> >> >> -- >> Regards, >> Konstantin > > _______________________________________________ > webkit-dev mailing list > webkit-dev@lists.webkit.org <mailto:webkit-dev@lists.webkit.org> > https://lists.webkit.org/mailman/listinfo/webkit-dev > <https://lists.webkit.org/mailman/listinfo/webkit-dev>
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