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52 lines
3.2 KiB
ReStructuredText
52 lines
3.2 KiB
ReStructuredText
TODO
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====
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For next compiler release (7.2)
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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make AnonymousScope no longer a INameScope as the vars are scoped to the parent subroutine.
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requires to hoist all vardecls in all AnonymousScopes up to Subroutine level somewhere,
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and changing all lookups that now look into the anonymousscope (no longer needed).
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Do this after AstIdentifiersChecker so that we know that there are no problems with
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variable name clashes.
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Blocked by Commander-x16 v39 release
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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- simplify cx16.joystick_get2() once this cx16 rom issue is resolved: https://github.com/commanderx16/x16-rom/issues/203
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(I hope this will still be included into the final v39 roms release for the cx16)
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Future
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^^^^^^
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- get rid of all TODO's in the code
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- improve testability further, add more tests, address more questions/issues from the testability discussions.
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- replace certain uses of inferredType.getOr(DataType.UNDEFINED) by i.getOrElse({ errorhandler })
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- see if we can remove more "[InferredType].getOr(DataType.UNDEFINED)"
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- use more of Result<> and Either<> to handle errors/ nulls better
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- fix the asm-labels problem (github issue #62)
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- can we get rid of pieces of asmgen.AssignmentAsmGen by just reusing the AugmentableAssignment ? generated code should not suffer
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- c64: make the graphics.BITMAP_ADDRESS configurable (VIC banking)
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- optimize several inner loops in gfx2 even further?
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- add modes 2 and 3 to gfx2 (lowres 4 color and 16 color)?
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- add a flood fill routine to gfx2?
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- add a diskio.f_seek() routine for the Cx16 that uses its seek dos api?
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- make it possible for diskio to read and write from more than one file at the same time (= use multiple io channels)?
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- refactor the asmgen into own project submodule
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- refactor the compiler optimizers into own project submodule
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- make it possible to use cpu opcodes such as 'nop' as variable names by prefixing all asm vars with something such as ``v_``
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- [problematic due to 64tass:] add a compiler option to not remove unused subroutines. this allows for building library programs. But this won't work with 64tass's .proc ...
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Perhaps replace all uses of .proc/.pend by .block/.bend will fix that?
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(but we lose the optimizing aspect of the assembler where it strips out unused code.
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There's not really a dynamic switch possible as all assembly lib code is static and uses one or the other)
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- introduce byte-index operator to avoid index multiplications in loops over arrays?
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see https://www.reddit.com/r/programming/comments/alhj59/creating_a_programming_language_and_cross/eg898b9?utm_source=share&utm_medium=web2x&context=3
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More code optimization ideas
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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- a way to optimize if-statement codegen so that "if var & %10000" doesn't use stack & subroutine call, but also that the simple case "if X {...}" remains fast
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- detect variables that are written but never read - mark those as unused too and remove them, such as ``uword unused = memory("unused222", 20)`` - also remove this memory slab allocation
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- rewrite expression tree evaluation such that it doesn't use an eval stack but flatten the tree into linear code that uses a fixed number of predetermined value 'variables'
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- this removes the need for the BinExprSplitter (which is problematic now)
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