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ir: improve register type detection

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Irmen de Jong
2024-12-26 21:11:32 +01:00
parent 7b4a82b91a
commit 942d3ee640
7 changed files with 115 additions and 48 deletions
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docs/source/todo.rst
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@@ -55,11 +55,12 @@ Future Things and Ideas
IR/VM
-----
- getting it in shape for code generation...: the IR file should be able to encode every detail about a prog8 program (the VM doesn't have to actually be able to run all of it though!)
- addUsedRegistersCounts() doesn't always determine the datatype correctly. For instance with indirect instructions it thinks it still is a byte whereas it is a word (address)
- addUsedRegistersCounts() doesn't always determine the datatype correctly. --> GET RID OF THE Sxxx OPCODES FOR NOW?
- fix TODO("IR rol/ror on split words array")
- fix "<< in array" / ">> in array"
- implement missing operators in AssignmentGen (array shifts etc)
- fix call() return value handling
- try to get rid of LSIG opcode again (but this will introduce byte reads from word typed registers...)
- proper code gen for the CALLI instruction and that it (optionally) returns a word value that needs to be assigned to a reg
- idea: (but LLVM IR simply keeps the variables, so not a good idea then?...): replace all scalar variables by an allocated register. Keep a table of the variable to register mapping (including the datatype)
global initialization values are simply a list of LOAD instructions.