[WIP] cpubits: initial crate #826
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Wow, what is this (unrelated) failure in https://github.com/RustCrypto/utils/actions/runs/3868175503/jobs/6593444420#step:6:13 Also this in https://github.com/RustCrypto/utils/actions/runs/3868175523/jobs/6593445047#step:7:13 |
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As discussed in #824, adds a crate with the intent of it providing heuristics for selecting whether 32-bit or 64-bit backends have optimal codegen for a given target, with optional overrides. The intended use of this crate is in `build-dependencies`, where it can emit a `cfg` attribute (e.g. `--cfg cpubits="64"`) if one hasn't been explicitly specified already, and all gating on 32-bit vs 64-bit backends can simply use the `cfg` attribute.
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As discussed in #824, adds a crate with the intent of it providing heuristics for selecting whether 32-bit or 64-bit backends have optimal codegen for a given target, with optional overrides.
The intended use of this crate is in
build-dependencies, where it can emit acfgattribute (e.g.--cfg cpubits="64") if one hasn't been explicitly specified already, and all gating on 32-bit vs 64-bit backends can simply use thecfgattribute.