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Comment on YJIT: Building a New JIT Compiler for CRuby

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This is so exciting to see! I'm excited about the internal changes to MRI to unlock even bigger performance. I'd also love to see some research on what FFI changes would be helpful for enabling more performance across the FFI boundary. A lot of conversation ends up at "well, we go into C and it's terrible" but that feels defeatist.

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