Grant Report - MoarVM JIT Compiler Expression Backend - June 2019
Sat, 13-Jul-2019 by
Mark A Jensen
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- [Floating point support] is essentially complete. Bart is currently
finishing floating point support in conditional expressions. This is
surprisingly nontrivial, he indicates, because of NaN, and because
of condition code differences between floating point and integer
comparisons.
- [Improved handling of irregular instructions] is nearing
completion. Bart says it turned out to have a whole lot of overlap
with the floating point support. He is currently reevaluating his
initial strategy (refactoring the support for C
calls which already has the ability to move values in registers as
needed)
- Bart continues to work on an internal refactor of the intermediate
representation (IR) structure, prior to completing optimization
work, since, he says, "the current tree form makes rewriting
modification really cheap, and I'd like to preserve that property
even as I add a strict order of evaluation."
- He is also pursuing development of a consistent testing system for
this work.
MAJ
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