Remove extern crate rustc_middle from numerous crates.

compiler/rustc_passes/src/abi_test.rs

@@ -1,6 +1,7 @@
 use rustc_ast::Attribute;
 use rustc_hir::def::DefKind;
 use rustc_hir::def_id::LocalDefId;
+use rustc_middle::span_bug;
 use rustc_middle::ty::layout::{FnAbiError, LayoutError};
 use rustc_middle::ty::{self, GenericArgs, Instance, Ty, TyCtxt};
 use rustc_span::source_map::Spanned;

compiler/rustc_passes/src/check_attr.rs

@@ -19,6 +19,7 @@ use rustc_hir::{
 };
 use rustc_hir::{MethodKind, Target, Unsafety};
 use rustc_macros::LintDiagnostic;
+use rustc_middle::bug;
 use rustc_middle::hir::nested_filter;
 use rustc_middle::middle::resolve_bound_vars::ObjectLifetimeDefault;
 use rustc_middle::query::Providers;

compiler/rustc_passes/src/check_const.rs

@@ -13,6 +13,7 @@ use rustc_hir::def_id::{LocalDefId, LocalModDefId};
 use rustc_hir::intravisit::{self, Visitor};
 use rustc_middle::hir::nested_filter;
 use rustc_middle::query::Providers;
+use rustc_middle::span_bug;
 use rustc_middle::ty::TyCtxt;
 use rustc_session::parse::feature_err;
 use rustc_span::{sym, Span, Symbol};

compiler/rustc_passes/src/dead.rs

@@ -16,6 +16,7 @@ use rustc_middle::middle::codegen_fn_attrs::CodegenFnAttrFlags;
 use rustc_middle::middle::privacy::Level;
 use rustc_middle::query::Providers;
 use rustc_middle::ty::{self, TyCtxt};
+use rustc_middle::{bug, span_bug};
 use rustc_session::lint;
 use rustc_session::lint::builtin::DEAD_CODE;
 use rustc_span::symbol::{sym, Symbol};

compiler/rustc_passes/src/layout_test.rs

@@ -1,6 +1,7 @@
 use rustc_ast::Attribute;
 use rustc_hir::def::DefKind;
 use rustc_hir::def_id::LocalDefId;
+use rustc_middle::span_bug;
 use rustc_middle::ty::layout::{HasParamEnv, HasTyCtxt, LayoutError, LayoutOfHelpers, TyAndLayout};
 use rustc_middle::ty::{self, ParamEnv, Ty, TyCtxt};
 use rustc_span::source_map::Spanned;

compiler/rustc_passes/src/lib.rs

@@ -12,8 +12,6 @@
 #![feature(map_try_insert)]
 #![feature(try_blocks)]
 
-#[macro_use]
-extern crate rustc_middle;
 #[macro_use]
 extern crate tracing;
 

compiler/rustc_passes/src/liveness.rs

@@ -94,6 +94,7 @@ use rustc_hir::intravisit::{self, Visitor};
 use rustc_hir::{Expr, HirId, HirIdMap, HirIdSet};
 use rustc_index::IndexVec;
 use rustc_middle::query::Providers;
+use rustc_middle::span_bug;
 use rustc_middle::ty::{self, RootVariableMinCaptureList, Ty, TyCtxt};
 use rustc_session::lint;
 use rustc_span::symbol::{kw, sym, Symbol};

compiler/rustc_passes/src/loops.rs

@@ -6,6 +6,7 @@ use rustc_hir::intravisit::{self, Visitor};
 use rustc_hir::{Destination, Node};
 use rustc_middle::hir::nested_filter;
 use rustc_middle::query::Providers;
+use rustc_middle::span_bug;
 use rustc_middle::ty::TyCtxt;
 use rustc_session::Session;
 use rustc_span::hygiene::DesugaringKind;

compiler/rustc_passes/src/reachable.rs

@@ -17,6 +17,7 @@ use rustc_hir::def::{DefKind, Res};
 use rustc_hir::def_id::{DefId, LocalDefId};
 use rustc_hir::intravisit::{self, Visitor};
 use rustc_hir::Node;
+use rustc_middle::bug;
 use rustc_middle::middle::codegen_fn_attrs::{CodegenFnAttrFlags, CodegenFnAttrs};
 use rustc_middle::middle::privacy::{self, Level};
 use rustc_middle::mir::interpret::{ConstAllocation, GlobalAlloc};