ZLUDA/ptx/doc/NOTES.md

I'm convinced nobody actually uses parser generators in Rust:

• pomelo can't generate lexer (understandable, as it is a port of lemon and lemon can't do this either)
• pest can't do parse actions, you have to convert your parse tree to ast manually
• lalrpop can't do comments
  • and the day I wrote the line above it can
  • reports parsing errors as byte offsets
  • if you want to skip parsing one of the alternatives functional design gets quite awkward
• antlr4rust is untried and requires java to build
• no library supports island grammars

What to emit?

• SPIR-V
  • Better library support, easier to emit
  • Can by optimized by IGC
  • Can't do some things (not sure what exactly yet)
    • But we can work around things with inline VISA
• VISA
  • Quicker compilation