bjoernager/rust
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Implement cfg(target_abi) (RFC 2992)

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Add an `abi` field to `TargetOptions`, defaulting to "". Support using
`cfg(target_abi = "...")` for conditional compilation on that field.

Gated by `feature(cfg_target_abi)`.

Add a test for `target_abi`, and a test for the feature gate.

Add `target_abi` to tidy as a platform-specific cfg.

This does not add an abi to any existing target.
This commit is contained in:
Josh Triplett 2021-07-06 20:54:54 -07:00
parent c0bd5a584d
commit 84d6e8aed3
9 changed files with 76 additions and 1 deletions
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1
compiler/rustc_feature/src/builtin_attrs.rs
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@ -23,6 +23,7 @@ pub type GatedCfg = (Symbol, Symbol, GateFn);
/// `cfg(...)`'s that are feature gated.
const GATED_CFGS: &[GatedCfg] = &[
// (name in cfg, feature, function to check if the feature is enabled)
(sym::target_abi, sym::cfg_target_abi, cfg_fn!(cfg_target_abi)),
(sym::target_thread_local, sym::cfg_target_thread_local, cfg_fn!(cfg_target_thread_local)),
(sym::target_has_atomic, sym::cfg_target_has_atomic, cfg_fn!(cfg_target_has_atomic)),
(sym::target_has_atomic_load_store, sym::cfg_target_has_atomic, cfg_fn!(cfg_target_has_atomic)),