prog8/docs/source/todo.rst

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2018-08-06 01:35:43 +00:00
====
TODO
====
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Memory Block Operations integrated in language?
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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@todo list,string memory block operations?
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- list operations (whole list, individual element)
operations: set, get, copy (from another list with the same length), shift-N(left,right), rotate-N(left,right)
clear (set whole list to the given value, default 0)
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- list operations ofcourse work identical on vars and on memory mapped vars of these types.
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- strings: identical operations as on lists.
these should call (or emit inline) optimized pieces of assembly code, so they run as fast as possible
For now, we have the ``memcopy``, ``memset`` and ``strlen`` builtin functions.
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More optimizations
^^^^^^^^^^^^^^^^^^
Add more compiler optimizations to the existing ones.
- on the language AST level
- on the StackVM intermediate code level
- on the final assembly source level
- can the parameter passing to subroutines be optimized to avoid copying?
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- subroutines with 1 or 2 byte args (or 1 word arg) should be converted to asm calling convention with the args in A/Y register
this requires rethinking the way parameters are represented, simply injecting vardecls to
declare local variables for them is not always correct anymore
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Also some library routines and code patterns could perhaps be optimized further
Eval stack redesign? (lot of work)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
The eval stack is now a split lsb/msb stack using X as the stackpointer.
Is it easier/faster to just use a single page unsplit stack?
It could then even be moved into the zeropage to greatly reduce code size and slowness.
Or just move the LSB portion into a slab of the zeropage.
2019-01-29 22:48:26 +00:00
Allocate a fixed word in ZP that is the TOS so we can operate on TOS directly
without having to to index into the stack?
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structs?
^^^^^^^^
A user defined struct type would be nice to group a bunch
of values together (and use it multiple times). Something like::
struct Point {
ubyte color
word[3] vec = [0,0,0]
}
Point p1
Point p2
Point p3
p1.color = 3
p1.vec[2] = 2
Misc
^^^^
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- are there any other missing instructions in the code generator?
- implement %asmbinary