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.

Dave

In reply to Re^3: Perl 5 Optimizing Compiler, Part 5: A Vague Outline Emerges by dave_the_m
in thread Perl 5 Optimizing Compiler, Part 5: A Vague Outline Emerges by Will_the_Chill

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