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ir: join code chunks

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Irmen de Jong
2022-09-30 02:47:33 +02:00
parent 43e31765e5
commit 94f0f3e966
3 changed files with 50 additions and 5 deletions
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docs/source/todo.rst
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@@ -18,10 +18,11 @@ Future Things and Ideas
Compiler:
- create BSS section in output program 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! So requires self-modifying code
- vm: Jumps go to a code block rather than a specific address(label) -> also helps future dead code elimination?
- vm: the above means that every label introduces a new code block. This eliminates the use of actual labels altogether during execution/translation.
- vm: add more optimizations in IRPeepholeOptimizer
- vm: how to remove all unused subroutines? (the 6502 assembly codegen relies on 64tass solve this for us)
- ir: Jumps go to a code block rather than a specific address(label) -> also helps future dead code elimination?
- ir: the above means that every label introduces a new code block. This eliminates the use of actual labels altogether during execution/translation.
- ir: joinChunks() in the IR optimizer should be changed accordingly
- ir: add more optimizations in IRPeepholeOptimizer
- ir: how to remove all unused subroutines? (the 6502 assembly codegen relies on 64tass solve this for us)
- see if we can let for loops skip the loop if end<start, like other programming languages. Without adding a lot of code size/duplicating the loop condition.
this is documented behavior to now loop around but it's too easy to forget about!
Lot of work because of so many special cases in ForLoopsAsmgen.....