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thir: Add Become expression kind

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This commit is contained in:
Maybe Waffle 2022-11-21 12:47:42 +00:00
parent b5e51db16d
commit c60fb12a35
11 changed files with 32 additions and 9 deletions
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4
compiler/rustc_ty_utils/src/consts.rs
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@ -241,7 +241,8 @@ fn recurse_build<'tcx>(
ExprKind::Assign { .. } | ExprKind::AssignOp { .. } => {
error(GenericConstantTooComplexSub::AssignNotSupported(node.span))?
}
ExprKind::Closure { .. } | ExprKind::Return { .. } => {
// FIXME(explicit_tail_calls): maybe get `become` a new error
ExprKind::Closure { .. } | ExprKind::Return { .. } | ExprKind::Become { .. } => {
error(GenericConstantTooComplexSub::ClosureAndReturnNotSupported(node.span))?
}
// let expressions imply control flow
@ -337,6 +338,7 @@ impl<'a, 'tcx> IsThirPolymorphic<'a, 'tcx> {
| thir::ExprKind::Break { .. }
| thir::ExprKind::Continue { .. }
| thir::ExprKind::Return { .. }
| thir::ExprKind::Become { .. }
| thir::ExprKind::Array { .. }
| thir::ExprKind::Tuple { .. }
| thir::ExprKind::Adt(_)