This is going to be an optimizer for the FAsm output of PureBasic. This includes a parser for FAsm files, an analyzer and (later) algorithms to optimize the code. The analyzer examines the control flow and generates a list of dependencies between the instructions. Afterwards, this information can be used by the optimizer.
Planned optimizations:
- Removing of not executed code
- Removing of code which has no influence
- Inlining of subroutines
- Inlining of PeekX and PokeX and other PB functions
Development has stopped, and the software is not in a usable state. Code analysis works, and the software is able to generate a dependency graph, even though a lot of opcodes are missing. The analyzer is also able to calculate the stack pointer offset, but there are problems when the offset is manipulated inside a loop, or if a function with pushed parameters is called.
Here is a visualization of some assembly code:
The stack pointer offset (In red) at the label _For20 is misscalculated, because it's not known how the function calls inside that loop manipulate the stack pointer.
Beside the fact, that it's not in a usable state yet.
The way this optimizer was meant to be used, was to replace the fasm.exe inside PureBasic's compiler directory.
But you can just compile it, or start it inside the repository folder. It will then parse, analyze and visualize the file Test/Test.asm.
This software is released under the GPLv3.