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be35d37d8b
Currently we whether or not to build and test `f16` and `f128` support
mostly based on the target triple. This isn't always accurate, however,
since support also varies by backend and the backend version.
Since recently, `rustc` is aware of this with the unstable config option
`target_has_reliable_{f16,f128}`, which better represents when the types
are actually expected to be available and usable. Switch our
compiler-builtins and libm configuration to use this by probing `rustc`
for the target's settings.
A few small `cfg` fixes are needed with this.
compiler-builtins and libm
This repository contains two main crates:
compiler-builtins: symbols that the compiler expects to be available at link timelibm: a Rust implementation of C math libraries, used to provide implementations incore.
More details are at compiler-builtins/README.md and libm/README.md.
For instructions on contributing, see CONTRIBUTING.md.
License
libmmay be used under the MIT Licensecompiler-builtinsmay be used under the MIT License and the Apache License, Version 2.0 with the LLVM exception.- All original contributions must be under all of: the MIT license, the Apache-2.0 license, and the Apache-2.0 license with the LLVM exception.
More details are in LICENSE.txt and libm/LICENSE.txt.