[clang] [Clang] [Sema] Fix bug in `_Complex float`+`int` arithmetic (PR #83063)

[Aaron Ballman via cfe-commits]

AaronBallman wrote:

> Since this is a relatively benign bug, all things considered, does this even warrant a release note?

I think it should have a release note; it changes the layout of the AST which may impact folks writing AST matchers (clang-tidy checks, etc). But also, I think it does fix #31205 which is worth mentioning as users can notice the performance difference on multiplication and division (not so much on addition or subtraction, I believe).

I think the code is correct and the extra test coverage is awesome, but I've added @jcranmer-intel as a reviewer to double check that everything is correct.



https://github.com/llvm/llvm-project/pull/83063