[clang] Reland "[Modules] Record whether VarDecl initializers contain side effects" (PR #145447)

[Henrik G. Olsson via cfe-commits]

hnrklssn wrote:

> > You don't happen to be using the new constant interpreter?
> 
> Not sure what you mean by this. We're using the unmodified compiler and testing its correctness on google internal code.

Then you're likely not. I was just making sure, because the constant evaluation takes a different path if the new (experimental) constant interpreter is enabled.

https://github.com/llvm/llvm-project/pull/145447