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todo

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Irmen de Jong 2023-02-16 23:06:09 +01:00
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@ -3,13 +3,10 @@ TODO
For next minor release
^^^^^^^^^^^^^^^^^^^^^^
- 6502 codegen optimize array1[index] += / -= array2[index] to not use slow stackeval (attemptAssignOptimizedBinexpr)
- various optimizers skip stuff if compTarget.name==VMTarget.NAME. When 6502-codegen is no longer done from
the old CompilerAst, those checks should probably be removed, or be made permanent
- 6502 codegen: create BSS section in output assembly code and put StStaticVariables in there with bss=true.
- BSS in 6502 codegen: create BSS section in output assembly code and put StStaticVariables in there with bss=true.
Don't forget to add init code to zero out everything that was put in bss. If array in bss->only zero ONCE if possible.
Note that bss can still contain variables that have @zp tag and those are already dealt with differently
- bss: subroutine parameters don't have to be set to 0.
- BSS: subroutine parameters don't have to be set to 0.
...
@ -84,6 +81,8 @@ Optimizations:
- when a loopvariable of a forloop isn't referenced in the body, and the iterations are known, replace the loop by a repeatloop
but we have no efficient way right now to see if the body references a variable.
- optimize function argument expressions better (use temporary variables to replace non-simple expressions?)
- various optimizers skip stuff if compTarget.name==VMTarget.NAME. Once 6502-codegen is done from IR code,
those checks should probably be removed, or be made permanent
STRUCTS again?