prog8/docs/source/todo.rst

====
TODO
====

- simplify cx16.joystick_get2() once this cx16 rom issue is resolved: https://github.com/commanderx16/x16-rom/issues/203
- c64: make the graphics.BITMAP_ADDRESS configurable (VIC banking)
- get rid of all other TODO's in the code ;-)


Low prio
^^^^^^^^
- see if we can remove more ".typeOrElse(DataType.UNDEFINED)"
- optimize several inner loops in gfx2 even further?
- add modes 2 and 3 to gfx2 (lowres 4 color and 16 color)?
- add a flood fill routine to gfx2?
- add a f_seek() routine for the Cx16 that uses its seek dos api?
- refactor the asmgen into own submodule
- refactor the compiler optimizers into own submodule
- add a compiler option to not remove unused subroutines. this allows for building library programs. But this won't work with 64tass's .proc ...
- make it possible to use cpu opcodes such as 'nop' as variable names by prefixing all asm vars with something such as ``v_``

More optimizations
^^^^^^^^^^^^^^^^^^

Add more compiler optimizations to the existing ones.

- find 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
- optimizer: 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 the memory slab allocation
- further optimize assignment codegeneration, such as the following:
- rewrite expression code generator to not use eval stack but a fixed number of predetermined value 'variables' (1 per nesting level?)
- binexpr splitting (beware self-referencing expressions and asm code ballooning though)
- more optimizations on the language AST level
- more optimizations on the final assembly source level


Misc
^^^^

Several ideas were discussed on my reddit post
https://www.reddit.com/r/programming/comments/alhj59/creating_a_programming_language_and_cross/
new docs 2018-08-06 03:35:43 +02:00			`====`
			`TODO`
			`====`
preparing optimizations for if statements 2021-04-12 03:34:58 +02:00
todo 2021-04-27 23:13:46 +02:00			`- simplify cx16.joystick_get2() once this cx16 rom issue is resolved: https://github.com/commanderx16/x16-rom/issues/203`
actually not simplifying if-code generation, leads to larger code at the moment 2021-04-12 23:02:32 +02:00			`- c64: make the graphics.BITMAP_ADDRESS configurable (VIC banking)`
			`- get rid of all other TODO's in the code ;-)`


			`Low prio`
			`^^^^^^^^`
refactor some type checks 2021-04-30 00:09:15 +02:00			`- see if we can remove more ".typeOrElse(DataType.UNDEFINED)"`
actually not simplifying if-code generation, leads to larger code at the moment 2021-04-12 23:02:32 +02:00			`- optimize several inner loops in gfx2 even further?`
			`- add modes 2 and 3 to gfx2 (lowres 4 color and 16 color)?`
todo 2021-02-07 19:08:47 +01:00			`- add a flood fill routine to gfx2?`
optimize pointer var access if var is already on zeropage 2021-01-16 18:09:47 +01:00			`- add a f_seek() routine for the Cx16 that uses its seek dos api?`
actually not simplifying if-code generation, leads to larger code at the moment 2021-04-12 23:02:32 +02:00			`- refactor the asmgen into own submodule`
			`- refactor the compiler optimizers into own submodule`
don't stript unused asmsub definitions 2021-03-21 19:55:21 +01:00			`- add a compiler option to not remove unused subroutines. this allows for building library programs. But this won't work with 64tass's .proc ...`
added 'align_word' and 'align_page' block options to control block start address alignment in the assembler 2021-02-21 01:24:44 +01:00			- make it possible to use cpu opcodes such as 'nop' as variable names by prefixing all asm vars with something such as ``v_``
tweak error reporting, expanded lines and circles example 2020-03-22 00:43:46 +01:00
doc 2019-01-24 02:43:25 +01:00			`More optimizations`
			`^^^^^^^^^^^^^^^^^^`

			`Add more compiler optimizations to the existing ones.`

actually not simplifying if-code generation, leads to larger code at the moment 2021-04-12 23:02:32 +02:00			`- find 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`
			`- optimizer: 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 the memory slab allocation`
added codengeration for assigment of array of values to a struct variable (all members at once) 2020-10-02 22:37:52 +02:00			`- further optimize assignment codegeneration, such as the following:`
todos 2021-02-15 04:41:33 +01:00			`- rewrite expression code generator to not use eval stack but a fixed number of predetermined value 'variables' (1 per nesting level?)`
added codengeration for assigment of array of values to a struct variable (all members at once) 2020-10-02 22:37:52 +02:00			`- binexpr splitting (beware self-referencing expressions and asm code ballooning though)`
fix warnings about unreachable code 2020-03-24 22:37:42 +01:00			`- more optimizations on the language AST level`
			`- more optimizations on the final assembly source level`
doc 2019-01-24 02:43:25 +01:00
Expressions can now be split over multiple lines. Fixed datatype of len(). 2019-01-26 17:32:26 +01:00
fix some optimizations of loops, added some conditional branch optimizations 2019-01-27 19:14:58 +01:00			`Misc`
			`^^^^`

info 2019-08-11 18:21:15 +02:00			`Several ideas were discussed on my reddit post`
			`https://www.reddit.com/r/programming/comments/alhj59/creating_a_programming_language_and_cross/`