[libcxx-commits] [clang] [libcxx] [Clang] Allow __builtin_fma/fmaf/fmal to be used in a constant expression (PR #158048)

[Hubert Tong via libcxx-commits]

hubert-reinterpretcast wrote:

> I lean towards the stance of prohibiting non-mandatory constant evaluation of floating-point expressions when `FENV_ACCESS` is on, even if the expression would be exact.

That is a very interesting point that I did not think about. Do we need a document to capture the information appearing in this review or do we think we'll end up with enough code-comment breadcrumbs?

https://github.com/llvm/llvm-project/pull/158048