[PATCH] D107420: [WIP][sema] Disallow __builtin_mul_overflow under special condition.

[Freddy, Ye via Phabricator via cfe-commits]

FreddyYe added a comment.

I just realized that LLVM has a gap with GCC due to the compiler-rt call. Check this example:
https://gcc.godbolt.org/z/8Pf7zErr7
I need further investigation to know why this gap happens. Pls don't review the code.


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D107420/new/

https://reviews.llvm.org/D107420