add crate-local -Z reference_niches unstable flag (does nothing for now)

2023-06-23 21:05:24 +02:00
parent 30ae640a3c
commit 8b847ef734
10 changed files with 61 additions and 3 deletions
--- a/compiler/rustc_abi/src/lib.rs
+++ b/compiler/rustc_abi/src/lib.rs
@@ -49,6 +49,14 @@ bitflags! {
    }
 }

+/// Which niches (beyond the `null` niche) are available on references.
+#[derive(Default, Copy, Clone, Hash, Debug, Eq, PartialEq)]
+#[cfg_attr(feature = "nightly", derive(Encodable, Decodable, HashStable_Generic))]
+pub struct ReferenceNichePolicy {
+    pub size: bool,
+    pub align: bool,
+}
+
 #[derive(Copy, Clone, Debug, Eq, PartialEq)]
 #[cfg_attr(feature = "nightly", derive(Encodable, Decodable, HashStable_Generic))]
 pub enum IntegerType {