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 <https://bugs.webkit.org/show_bug.cgi?id=174645>. Thanks. Mark
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