[ruby-core:120347] [Ruby master Feature#18439] YJIT: Support Microsoft x86 calling convention

Issue #18439 has been updated by maximecb (Maxime Chevalier-Boisvert).


It would definitely be simpler if integers were handled the same way on windows as on Linux and macOS.

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Feature #18439: YJIT: Support Microsoft x86 calling convention
https://bugs.ruby-lang.org/issues/18439#change-111124

* Author: usa (Usaku NAKAMURA)
* Status: Assigned
* Assignee: yjit
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I heard that supporting YJIT for VC++ needs mmap from k0kubun-san, so I implemented tiny mmap emulation on Windows and committed it to master.
And, I found we need more changes to actually enabled YJIT for VC++, at least:

- YJIT requires `OPT_DIRECT_THREADED_CODE` or `OPT_CALL_THREADED_CODE` in `rb_yjit_compile_iseq()`.  Really?
- Maybe ABI deffers between VC++ and YJIT's expectation.

Can I get support to fix above?



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