[llvm] [Transforms][IPO] Add func suffix in ArgumentPromotion and DeadArgume… (PR #105742)

[Eli Friedman via llvm-commits]

efriedma-quic wrote:

> > If the name is using C++ mangling, does the demangler produce something reasonable? If not, can we modify the name in a demangler-friendly way?
> I am not sure about this as my context is linux kernel which is C based. How do I know demangler produce something reasonable?

Take a small C++ function that gets optimized, run the resulting symbol through c++filt, see what you get.

>> If you try to set a breakpoint on a function, how will a debugger react to the changed name?
> Again, good question. But gcc already have functions like .constprop., .isra.. Do gdb/lldb handle those functions?

I think maybe we end up doing a wildcard search that finds them?  Not sure.

https://github.com/llvm/llvm-project/pull/105742