Fix new usage of old api

Author: nbdd0121

compiler/rustc_mir_build/src/build/custom/parse/instruction.rs

@@ -56,7 +56,7 @@ impl<'tcx, 'body> ParseCtxt<'tcx, 'body> {
                 Ok(TerminatorKind::Drop {
                     place: self.parse_place(args[0])?,
                     target: self.parse_block(args[1])?,
-                    unwind: None,
+                    unwind: UnwindAction::Continue,
                 })
             },
             @call("mir_call", args) => {
@@ -126,7 +126,7 @@ impl<'tcx, 'body> ParseCtxt<'tcx, 'body> {
                     args,
                     destination,
                     target: Some(target),
-                    cleanup: None,
+                    unwind: UnwindAction::Continue,
                     from_hir_call: *from_hir_call,
                     fn_span: *fn_span,
                 })

compiler/rustc_mir_build/src/build/scope.rs

@@ -1438,11 +1438,11 @@ impl<'tcx> DropTreeBuilder<'tcx> for Unwind {
         let term = &mut cfg.block_data_mut(from).terminator_mut();
         match &mut term.kind {
             TerminatorKind::Drop { unwind, .. } => {
-                if let Some(unwind) = *unwind {
+                if let UnwindAction::Cleanup(unwind) = *unwind {
                     let source_info = term.source_info;
                     cfg.terminate(unwind, source_info, TerminatorKind::Goto { target: to });
                 } else {
-                    *unwind = Some(to);
+                    *unwind = UnwindAction::Cleanup(to);
                 }
             }
             TerminatorKind::FalseUnwind { unwind, .. }

compiler/rustc_mir_transform/src/elaborate_drops.rs

@@ -160,7 +160,7 @@ fn remove_dead_unwinds<'tcx>(
     let basic_blocks = body.basic_blocks.as_mut();
     for &bb in dead_unwinds.iter() {
         if let Some(unwind) = basic_blocks[bb].terminator_mut().unwind_mut() {
-            *unwind = None;
+            *unwind = UnwindAction::Unreachable;
         }
     }
 }