[llvm] RuntimeLibcalls: Stop opting out of exp10 (PR #148604)

[Nikita Popov via llvm-commits]

nikic wrote:

Except for target specific types (x86_fp80 and ppc_fp128) I think it is preferable if missing FP libcalls that cannot be legalized result in a linker error instead of a compiler error, which allows the user to provide them. At least when considering the world we live in *now*, rather than possible future designs.

https://github.com/llvm/llvm-project/pull/148604