[llvm] [LLVM] [X86] Fix integer overflows in frame layout for huge frames (PR #101840)

[via llvm-commits]

zmodem wrote:

> I don't know how you managed to encounter this in the real world, but that code can't work.

We hit the assert both in builds targeting 32-bit x86 Linux and Windows, from source files in different projects (ANGLE and V8).

I'll try to creduce one of them to see if we can get something that's easier to look at.

https://github.com/llvm/llvm-project/pull/101840