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optimize msb(lsw(longvar)) into @(&longvar+1)

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Irmen de Jong
2026-01-06 22:58:45 +01:00
parent bc4470aeda
commit 3a0add60fd
4 changed files with 41 additions and 29 deletions
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docs/source/todo.rst
+4 -1
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@@ -1,6 +1,9 @@
TODO
====
- fix TODO pointer cast , for example: @(&lv as ^^ubyte + 1) = 0
Weird Heisenbug
^^^^^^^^^^^^^^^
- BUG: examples/cube3d-float crashes with div by zero error on C64 (works on cx16. ALready broken in v11, v10 still worked)
@@ -11,7 +14,7 @@ Future Things and Ideas
^^^^^^^^^^^^^^^^^^^^^^^
- implement msb(a+b), lsb(a+b), msw(a+b), lsw(a+b)
- make divmod() return the 2 results rather than accepting 2 extra variables as arguments
- introduce lmh(longvalue) builtin function that returns the low, mid, hi (bank) bytes of a long.
- introduce lmh(longvalue) -or whatever sensible name- builtin function that returns the low, mid, hi (bank) bytes of a long.
- add a -profile option that instruments the start of every prog8 subroutine with code that dumps to the emulator debug console: name of sub, stack pointer (for call depth!), emudbg cycle count. Start of program must set cycle count to zero.
- when implementing unsigned longs: remove the (multiple) "TODO "hack" to allow unsigned long constants to be used as values for signed longs, without needing a cast"
- structs: properly fix the symbol name prefix hack in StStruct.sameas(), see github issue 198