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Auto merge of #81866 - nagisa:nagisa/sanitizer-support-target-prop, r=tmiasko

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Maintain supported sanitizers as a target property

In an effort to remove a hard-coded allow-list for target-sanitizer support correspondence, this PR moves the configuration to the target options.

Perhaps the one notable change made in this PR is this doc-comment:

```rust
    /// The sanitizers supported by this target
    ///
    /// Note that the support here is at a codegen level. If the machine code with sanitizer
    /// enabled can generated on this target, but the necessary supporting libraries are not
    /// distributed with the target, the sanitizer should still appear in this list for the target.
```

Previously the target would typically be added to the allow-list at the same time as the supporting runtime libraries are shipped for the target. However whether we ship the runtime libraries or not needn't be baked into the compiler; and if we don't users will receive a significantly more directed error about library not being found.

Fixes #81802
This commit is contained in:
bors 2021-04-02 23:33:01 +00:00
commit 9b6c9b638e
24 changed files with 216 additions and 203 deletions
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3
compiler/rustc_typeck/src/collect.rs
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@ -43,12 +43,11 @@ use rustc_middle::ty::util::Discr;
use rustc_middle::ty::util::IntTypeExt;
use rustc_middle::ty::{self, AdtKind, Const, DefIdTree, ToPolyTraitRef, Ty, TyCtxt};
use rustc_middle::ty::{ReprOptions, ToPredicate, WithConstness};
use rustc_session::config::SanitizerSet;
use rustc_session::lint;
use rustc_session::parse::feature_err;
use rustc_span::symbol::{kw, sym, Ident, Symbol};
use rustc_span::{Span, DUMMY_SP};
use rustc_target::spec::abi;
use rustc_target::spec::{abi, SanitizerSet};
use rustc_trait_selection::traits::error_reporting::suggestions::NextTypeParamName;
use std::iter;