Demangle functions/type name in LLVM IR and ASM

[Luthaf]

An option to demangle names from the LLVM IR/ASM output would be nice, and make it more readable.

[shepmaster]

As I understand it, demangling is tough in general. Do you have any suggestions on how this could be accomplished?

I'd assume the "best" solution would be to update Rust or LLVM itself to offer this functionality, otherwise anything we do would be unlikely to stay up to date.

[Luthaf]

I'd assume the "best" solution would be to update Rust or LLVM itself to offer this functionality, otherwise anything we do would be unlikely to stay up to date.

This would be the best solution, yes. Shelling out to c++filt works for some identifiers too, that is what I use sometimes.

[shepmaster]

@stepancheg Thank you so much! That's a wonderful solution that seems more reusable for lots of people!

[stepancheg]

@shepmaster Welcome!

I'm now thinking how to demangle symbols in assembly (not LLVM IR) output. Cannot think of anything better than postprocess generated assembly text.