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emacs/bcode: x86 asm version of eval #13

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quasilyte opened this issue Nov 13, 2017 · 0 comments
Open

emacs/bcode: x86 asm version of eval #13

quasilyte opened this issue Nov 13, 2017 · 0 comments

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@quasilyte
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For x86_64 platform it can make sense to write main loop in asm.
Performance differences should be measured to make a final decision.

The best manual asm advantages:

  1. can be sure that sp, code and other important variables always stored inside registers.
  2. dispatching via computed goto ("threaded" interpretation).

I expect at least 30% speedup from this re-write.
Before doing this, whole instruction should be handled inside normal Go implementation.
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@quasilyte