Modulo Simplification

Is your feature request related to a problem? Please describe. I’m always frustrated when I see a bunch of shifts, division, logical and other arithmetic for the modulo operation.

Describe the solution you’d like The operations to be simplified into the modulo operation.

Describe alternatives you’ve considered Opening up the program in IDA to see what is really going on. I am guilty of doing exactly this as it still beats breaking out a pencil and paper to figure it out.

Additional context

int mod6(int i) {
    return i % 6;
}

Here are some xml debug function decompilation outputs. (This one is guilty of not automatically appending the xml file extension)

mod2.xml.txt mod3.xml.txt mod4.xml.txt mod6.xml.txt

See, I do know what the modulo operator is…

[sad-dev]

Like @Swyter mentioned, work has been done for division by constants (see #1718, #668). Something like 2463cad should be doable eventually?

[pjsoberoi]

So you want to undo peephole optimization. Is there any way besides hardcoding a list of heuristics? Sounds like an interesting project.