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add cast kind of from_exposed_addr (int-to-ptr casts)

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Ralf Jung 2022-06-02 09:05:37 -04:00
parent 5e6bb83268
commit fafccdced3
10 changed files with 93 additions and 39 deletions
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8
compiler/rustc_middle/src/mir/mod.rs
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@ -2613,12 +2613,18 @@ impl<'tcx> Rvalue<'tcx> {
#[derive(Clone, Copy, Debug, PartialEq, Eq, TyEncodable, TyDecodable, Hash, HashStable)]
pub enum CastKind {
Misc,
/// An exposing pointer to address cast. A cast between a pointer and an integer type, or
/// between a function pointer and an integer type.
/// See the docs on `expose_addr` for more details.
PointerExposeAddress,
/// An address-to-pointer cast that picks up an exposed provenance.
/// See the docs on `from_exposed_addr` for more details.
PointerFromExposedAddress,
/// All sorts of pointer-to-pointer casts. Note that reference-to-raw-ptr casts are
/// translated into `&raw mut/const *r`, i.e., they are not actually casts.
Pointer(PointerCast),
/// Remaining unclassified casts.
Misc,
}
#[derive(Clone, Debug, PartialEq, Eq, TyEncodable, TyDecodable, Hash, HashStable)]