bjoernager/rust
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hir: Add Become expression kind

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This commit is contained in:
Maybe Waffle 2022-11-21 12:40:27 +00:00
parent 97bf23d26b
commit ccb71ff424
28 changed files with 268 additions and 72 deletions
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7
compiler/rustc_passes/src/liveness.rs
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@ -463,6 +463,7 @@ impl<'tcx> Visitor<'tcx> for IrMaps<'tcx> {
| hir::ExprKind::Lit(_)
| hir::ExprKind::ConstBlock(..)
| hir::ExprKind::Ret(..)
| hir::ExprKind::Become(..)
| hir::ExprKind::Block(..)
| hir::ExprKind::Assign(..)
| hir::ExprKind::AssignOp(..)
@ -967,6 +968,11 @@ impl<'a, 'tcx> Liveness<'a, 'tcx> {
self.propagate_through_opt_expr(o_e.as_deref(), self.exit_ln)
}
hir::ExprKind::Become(ref e) => {
// Ignore succ and subst exit_ln.
self.propagate_through_expr(e, self.exit_ln)
}
hir::ExprKind::Break(label, ref opt_expr) => {
// Find which label this break jumps to
let target = match label.target_id {
@ -1408,6 +1414,7 @@ fn check_expr<'tcx>(this: &mut Liveness<'_, 'tcx>, expr: &'tcx Expr<'tcx>) {
| hir::ExprKind::DropTemps(..)
| hir::ExprKind::Unary(..)
| hir::ExprKind::Ret(..)
| hir::ExprKind::Become(..)
| hir::ExprKind::Break(..)
| hir::ExprKind::Continue(..)
| hir::ExprKind::Lit(_)