remove box derefs from codgen

2022-05-13 21:53:03 -07:00
parent 3e9d3d917a
commit cb417881a9
16 changed files with 385 additions and 146 deletions
--- a/compiler/rustc_middle/src/mir/mod.rs
+++ b/compiler/rustc_middle/src/mir/mod.rs
@@ -176,8 +176,9 @@ pub enum MirPhase {
    DropsLowered = 3,
    /// After this projections may only contain deref projections as the first element.
    Derefered = 4,
-    /// Beginning with this phase, the following variant is disallowed:
+    /// Beginning with this phase, the following variants are disallowed:
    /// * [`Rvalue::Aggregate`] for any `AggregateKind` except `Array`
+    /// * [`ProjectionElem::Deref`] of `Box`
    ///
    /// And the following variant is allowed:
    /// * [`StatementKind::SetDiscriminant`]