mir: Use the new method for BasicBlockData

Author: dianqk

compiler/rustc_middle/src/mir/mod.rs

@@ -1359,7 +1359,19 @@ pub struct BasicBlockData<'tcx> {
 
 impl<'tcx> BasicBlockData<'tcx> {
     pub fn new(terminator: Option<Terminator<'tcx>>, is_cleanup: bool) -> BasicBlockData<'tcx> {
-        BasicBlockData { statements: vec![], terminator, is_cleanup }
+        BasicBlockData::new_stmts(Vec::new(), terminator, is_cleanup)
+    }
+
+    pub fn new_stmts(
+        statements: Vec<Statement<'tcx>>,
+        terminator: Option<Terminator<'tcx>>,
+        is_cleanup: bool,
+    ) -> BasicBlockData<'tcx> {
+        BasicBlockData {
+            statements,
+            terminator,
+            is_cleanup,
+        }
     }
 
     /// Accessor for terminator.

compiler/rustc_mir_transform/src/add_call_guards.rs

@@ -44,11 +44,10 @@ impl<'tcx> crate::MirPass<'tcx> for AddCallGuards {
 
         let cur_len = body.basic_blocks.len();
         let mut new_block = |source_info: SourceInfo, is_cleanup: bool, target: BasicBlock| {
-            let block = BasicBlockData {
-                statements: vec![],
+            let block = BasicBlockData::new(
+                Some(Terminator { source_info, kind: TerminatorKind::Goto { target } }),
                 is_cleanup,
-                terminator: Some(Terminator { source_info, kind: TerminatorKind::Goto { target } }),
-            };
+            );
             let idx = cur_len + new_blocks.len();
             new_blocks.push(block);
             BasicBlock::new(idx)

compiler/rustc_mir_transform/src/add_moves_for_packed_drops.rs

@@ -93,11 +93,11 @@ fn add_move_for_packed_drop<'tcx>(
     let ty = place.ty(body, tcx).ty;
     let temp = patch.new_temp(ty, source_info.span);
 
-    let storage_dead_block = patch.new_block(BasicBlockData {
-        statements: vec![Statement::new(source_info, StatementKind::StorageDead(temp))],
-        terminator: Some(Terminator { source_info, kind: TerminatorKind::Goto { target } }),
+    let storage_dead_block = patch.new_block(BasicBlockData::new_stmts(
+        vec![Statement::new(source_info, StatementKind::StorageDead(temp))],
+        Some(Terminator { source_info, kind: TerminatorKind::Goto { target } }),
         is_cleanup,
-    });
+    ));
 
     patch.add_statement(loc, StatementKind::StorageLive(temp));
     patch.add_assign(loc, Place::from(temp), Rvalue::Use(Operand::Move(*place)));

compiler/rustc_mir_transform/src/check_pointers.rs

@@ -235,11 +235,11 @@ fn split_block(
     let block_data = &mut basic_blocks[location.block];
 
     // Drain every statement after this one and move the current terminator to a new basic block.
-    let new_block = BasicBlockData {
-        statements: block_data.statements.split_off(location.statement_index),
-        terminator: block_data.terminator.take(),
-        is_cleanup: block_data.is_cleanup,
-    };
+    let new_block = BasicBlockData::new_stmts(
+        block_data.statements.split_off(location.statement_index),
+        block_data.terminator.take(),
+        block_data.is_cleanup,
+    );
 
     basic_blocks.push(new_block)
 }

compiler/rustc_mir_transform/src/coroutine.rs

@@ -257,11 +257,11 @@ impl<'tcx> TransformVisitor<'tcx> {
             StatementKind::Assign(Box::new((Place::return_place(), none_value))),
         )];
 
-        body.basic_blocks_mut().push(BasicBlockData {
+        body.basic_blocks_mut().push(BasicBlockData::new_stmts(
             statements,
-            terminator: Some(Terminator { source_info, kind: TerminatorKind::Return }),
-            is_cleanup: false,
-        });
+            Some(Terminator { source_info, kind: TerminatorKind::Return }),
+            false,
+        ));
 
         block
     }
@@ -1073,11 +1073,11 @@ fn insert_switch<'tcx>(
     let source_info = SourceInfo::outermost(body.span);
     body.basic_blocks_mut().raw.insert(
         0,
-        BasicBlockData {
-            statements: vec![assign],
-            terminator: Some(Terminator { source_info, kind: switch }),
-            is_cleanup: false,
-        },
+        BasicBlockData::new_stmts(
+            vec![assign],
+            Some(Terminator { source_info, kind: switch }),
+            false,
+        ),
     );
 
     for b in body.basic_blocks_mut().iter_mut() {
@@ -1087,11 +1087,7 @@ fn insert_switch<'tcx>(
 
 fn insert_term_block<'tcx>(body: &mut Body<'tcx>, kind: TerminatorKind<'tcx>) -> BasicBlock {
     let source_info = SourceInfo::outermost(body.span);
-    body.basic_blocks_mut().push(BasicBlockData {
-        statements: Vec::new(),
-        terminator: Some(Terminator { source_info, kind }),
-        is_cleanup: false,
-    })
+    body.basic_blocks_mut().push(BasicBlockData::new(Some(Terminator { source_info, kind }), false))
 }
 
 fn return_poll_ready_assign<'tcx>(tcx: TyCtxt<'tcx>, source_info: SourceInfo) -> Statement<'tcx> {
@@ -1112,11 +1108,11 @@ fn return_poll_ready_assign<'tcx>(tcx: TyCtxt<'tcx>, source_info: SourceInfo) ->
 
 fn insert_poll_ready_block<'tcx>(tcx: TyCtxt<'tcx>, body: &mut Body<'tcx>) -> BasicBlock {
     let source_info = SourceInfo::outermost(body.span);
-    body.basic_blocks_mut().push(BasicBlockData {
-        statements: [return_poll_ready_assign(tcx, source_info)].to_vec(),
-        terminator: Some(Terminator { source_info, kind: TerminatorKind::Return }),
-        is_cleanup: false,
-    })
+    body.basic_blocks_mut().push(BasicBlockData::new_stmts(
+        [return_poll_ready_assign(tcx, source_info)].to_vec(),
+        Some(Terminator { source_info, kind: TerminatorKind::Return }),
+        false,
+    ))
 }
 
 fn insert_panic_block<'tcx>(
@@ -1200,13 +1196,11 @@ fn generate_poison_block_and_redirect_unwinds_there<'tcx>(
     body: &mut Body<'tcx>,
 ) {
     let source_info = SourceInfo::outermost(body.span);
-    let poison_block = body.basic_blocks_mut().push(BasicBlockData {
-        statements: vec![
-            transform.set_discr(VariantIdx::new(CoroutineArgs::POISONED), source_info),
-        ],
-        terminator: Some(Terminator { source_info, kind: TerminatorKind::UnwindResume }),
-        is_cleanup: true,
-    });
+    let poison_block = body.basic_blocks_mut().push(BasicBlockData::new_stmts(
+        vec![transform.set_discr(VariantIdx::new(CoroutineArgs::POISONED), source_info)],
+        Some(Terminator { source_info, kind: TerminatorKind::UnwindResume }),
+        true,
+    ));
 
     for (idx, block) in body.basic_blocks_mut().iter_enumerated_mut() {
         let source_info = block.terminator().source_info;
@@ -1357,14 +1351,11 @@ fn create_cases<'tcx>(
                 }
 
                 // Then jump to the real target
-                let block = body.basic_blocks_mut().push(BasicBlockData {
+                let block = body.basic_blocks_mut().push(BasicBlockData::new_stmts(
                     statements,
-                    terminator: Some(Terminator {
-                        source_info,
-                        kind: TerminatorKind::Goto { target },
-                    }),
-                    is_cleanup: false,
-                });
+                    Some(Terminator { source_info, kind: TerminatorKind::Goto { target } }),
+                    false,
+                ));
 
                 (point.state, block)
             })

compiler/rustc_mir_transform/src/coroutine/drop.rs

@@ -102,9 +102,9 @@ fn build_pin_fut<'tcx>(
     );
 
     // call Pin<FutTy>::new_unchecked(&mut fut)
-    let pin_fut_bb = body.basic_blocks_mut().push(BasicBlockData {
-        statements: [storage_live, fut_ref_assign].to_vec(),
-        terminator: Some(Terminator {
+    let pin_fut_bb = body.basic_blocks_mut().push(BasicBlockData::new_stmts(
+        [storage_live, fut_ref_assign].to_vec(),
+        Some(Terminator {
             source_info,
             kind: TerminatorKind::Call {
                 func: pin_fut_new_unchecked_fn,
@@ -116,8 +116,8 @@ fn build_pin_fut<'tcx>(
                 fn_span: span,
             },
         }),
-        is_cleanup: false,
-    });
+        false,
+    ));
     (pin_fut_bb, fut_pin_place)
 }
 
@@ -161,9 +161,9 @@ fn build_poll_switch<'tcx>(
     );
     let storage_dead = Statement::new(source_info, StatementKind::StorageDead(fut_pin_place.local));
     let unreachable_block = insert_term_block(body, TerminatorKind::Unreachable);
-    body.basic_blocks_mut().push(BasicBlockData {
-        statements: [storage_dead, discr_assign].to_vec(),
-        terminator: Some(Terminator {
+    body.basic_blocks_mut().push(BasicBlockData::new_stmts(
+        [storage_dead, discr_assign].to_vec(),
+        Some(Terminator {
             source_info,
             kind: TerminatorKind::SwitchInt {
                 discr: Operand::Move(poll_discr_place),
@@ -174,8 +174,8 @@ fn build_poll_switch<'tcx>(
                 ),
             },
         }),
-        is_cleanup: false,
-    })
+        false,
+    ))
 }
 
 // Gather blocks, reachable through 'drop' targets of Yield and Drop terminators (chained)
@@ -546,11 +546,8 @@ pub(super) fn insert_clean_drop<'tcx>(
     };
 
     // Create a block to destroy an unresumed coroutines. This can only destroy upvars.
-    body.basic_blocks_mut().push(BasicBlockData {
-        statements: Vec::new(),
-        terminator: Some(Terminator { source_info, kind: term }),
-        is_cleanup: false,
-    })
+    body.basic_blocks_mut()
+        .push(BasicBlockData::new(Some(Terminator { source_info, kind: term }), false))
 }
 
 pub(super) fn create_coroutine_drop_shim<'tcx>(
@@ -729,11 +726,7 @@ pub(super) fn create_coroutine_drop_shim_proxy_async<'tcx>(
     body.local_decls[RETURN_PLACE] = LocalDecl::with_source_info(poll_enum, source_info);
 
     // call coroutine_drop()
-    let call_bb = body.basic_blocks_mut().push(BasicBlockData {
-        statements: Vec::new(),
-        terminator: None,
-        is_cleanup: false,
-    });
+    let call_bb = body.basic_blocks_mut().push(BasicBlockData::new(None, false));
 
     // return Poll::Ready()
     let ret_bb = insert_poll_ready_block(tcx, &mut body);