[llvm] [InstCombine] Add an option to skip simplification on call instruction where a non-void return value is expected while the callee returns void (PR #98536)

[via llvm-commits]

yozhu wrote:

Sorry - I messed up my local clone and branches and had to recreate this PR. It was the same code change as in #96574, where the conclusion is that adding an option to disable this optimization is fine but emitting a fatal error is not allowed.

https://github.com/llvm/llvm-project/pull/98536