[clang] [llvm] [clang] Add tanf16 builtin and support for tan constrained intrinsic (PR #93314)

[Paul Kirth via cfe-commits]

ilovepi wrote:

Thanks for the prompt revert. That's a big help.

> @ilovepi, How many platforms do you build Fuchsia for? It will be important to know which backends needs support before we try to re-land this.

Fuchsia builds for Aarch64, RISC-V 64, and X86_64. Our toolchain is also used in a lot of embedded contexts (mostly ARM32) but that is separate from Fuchsia's build.


https://github.com/llvm/llvm-project/pull/93314