Compute a better lint_node_id during expansion

When we need to emit a lint at a macro invocation, we currently use the
`NodeId` of its parent definition (e.g. the enclosing function). This
means that any `#[allow]` / `#[deny]` attributes placed 'closer' to the
macro (e.g. on an enclosing block or statement) will have no effect.

This commit computes a better `lint_node_id` in `InvocationCollector`.
When we visit/flat_map an AST node, we assign it a `NodeId` (earlier
than we normally would), and store than `NodeId` in current
`ExpansionData`. When we collect a macro invocation, the current
`lint_node_id` gets cloned along with our `ExpansionData`, allowing it
to be used if we need to emit a lint later on.

This improves the handling of `#[allow]` / `#[deny]` for
`SEMICOLON_IN_EXPRESSIONS_FROM_MACROS` and some `asm!`-related lints.
The 'legacy derive helpers' lint retains its current behavior
(I've inlined the now-removed `lint_node_id` function), since
there isn't an `ExpansionData` readily available.

compiler/rustc_expand/src/base.rs

@@ -869,9 +869,6 @@ pub trait ResolverExpand {
 
     fn check_unused_macros(&mut self);
 
-    /// Some parent node that is close enough to the given macro call.
-    fn lint_node_id(&self, expn_id: LocalExpnId) -> NodeId;
-
     // Resolver interfaces for specific built-in macros.
     /// Does `#[derive(...)]` attribute with the given `ExpnId` have built-in `Copy` inside it?
     fn has_derive_copy(&self, expn_id: LocalExpnId) -> bool;
@@ -926,6 +923,8 @@ pub struct ExpansionData {
     pub module: Rc<ModuleData>,
     pub dir_ownership: DirOwnership,
     pub prior_type_ascription: Option<(Span, bool)>,
+    /// Some parent node that is close to this macro call
+    pub lint_node_id: NodeId,
 }
 
 type OnExternModLoaded<'a> =
@@ -971,6 +970,7 @@ impl<'a> ExtCtxt<'a> {
                 module: Default::default(),
                 dir_ownership: DirOwnership::Owned { relative: None },
                 prior_type_ascription: None,
+                lint_node_id: ast::CRATE_NODE_ID,
             },
             force_mode: false,
             expansions: FxHashMap::default(),