You are comparing the legacy Perl 5's performance with legacy Perl 5. I dont think Will wants to just recompile Perl 5 the C program with Clang or write yet another B::C.
No, I am specifically trying to evaluate the effect of the "basic" Yuval approach of JIT converting a CV's ops tree into
a list of calls to modified pp_* functions, that then get compiled to IR. That approach seemed
to be what Will was advocating. Certainly it was the starting point for the LLVM discussion.
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