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Enable `f16` for MIPS Blocked on https://github.com/rust-lang/compiler-builtins/pull/762 It seems as if `f16` works on MIPS now according to my testing on Rust master with LLVM 20, and I was asked [here](https://github.com/rust-lang/rust/pull/137167#issuecomment-2669387820) to create PRs with my changes. I only tested on the flavour of `mipsel-unknown-linux-gnu` hardware that happens to be available to me, so I can't say anything about other MIPS hardware, but from a casual skimming of the LLVM code ([1], [2]) it seems like `f16` should work on all MIPS hardware. So enable it for all MIPS hardware. [1]: https://github.com/rust-lang/llvm-project/blob/rustc/20.1-2025-02-13/llvm/lib/Target/Mips/MipsISelLowering.h#L370 [2]: https://github.com/rust-lang/llvm-project/blob/rustc/20.1-2025-02-13/llvm/lib/CodeGen/TargetLoweringBase.cpp#L1367-L1388 `@rustbot` label +O-MIPS +F-f16_and_f128 +S-blocked Tracking issue for f16: https://github.com/rust-lang/rust/issues/116909 r? `@tgross35`