Re-export more rustc_span::symbol things from rustc_span.

`rustc_span::symbol` defines some things that are re-exported from
`rustc_span`, such as `Symbol` and `sym`. But it doesn't re-export some
closely related things such as `Ident` and `kw`. So you can do `use
rustc_span::{Symbol, sym}` but you have to do `use
rustc_span::symbol::{Ident, kw}`, which is inconsistent for no good
reason.

This commit re-exports `Ident`, `kw`, and `MacroRulesNormalizedIdent`,
and changes many `rustc_span::symbol::` qualifiers in `compiler/` to
`rustc_span::`. This is a 200+ net line of code reduction, mostly
because many files with two `use rustc_span` items can be reduced to
one.

compiler/rustc_builtin_macros/src/alloc_error_handler.rs

@@ -3,8 +3,7 @@ use rustc_ast::{
     self as ast, Fn, FnHeader, FnSig, Generics, ItemKind, Safety, Stmt, StmtKind, TyKind,
 };
 use rustc_expand::base::{Annotatable, ExtCtxt};
-use rustc_span::Span;
-use rustc_span::symbol::{Ident, kw, sym};
+use rustc_span::{Ident, Span, kw, sym};
 use thin_vec::{ThinVec, thin_vec};
 
 use crate::errors;

compiler/rustc_builtin_macros/src/asm.rs

@@ -10,8 +10,7 @@ use rustc_expand::base::*;
 use rustc_index::bit_set::GrowableBitSet;
 use rustc_parse::parser::Parser;
 use rustc_session::lint;
-use rustc_span::symbol::{Ident, Symbol, kw, sym};
-use rustc_span::{ErrorGuaranteed, InnerSpan, Span};
+use rustc_span::{ErrorGuaranteed, Ident, InnerSpan, Span, Symbol, kw, sym};
 use rustc_target::asm::InlineAsmArch;
 use smallvec::smallvec;
 use {rustc_ast as ast, rustc_parse_format as parse};

compiler/rustc_builtin_macros/src/assert.rs

@@ -8,8 +8,7 @@ use rustc_ast_pretty::pprust;
 use rustc_errors::PResult;
 use rustc_expand::base::{DummyResult, ExpandResult, ExtCtxt, MacEager, MacroExpanderResult};
 use rustc_parse::parser::Parser;
-use rustc_span::symbol::{Ident, Symbol, sym};
-use rustc_span::{DUMMY_SP, Span};
+use rustc_span::{DUMMY_SP, Ident, Span, Symbol, sym};
 use thin_vec::thin_vec;
 
 use crate::edition_panic::use_panic_2021;

compiler/rustc_builtin_macros/src/assert/context.rs

@@ -8,8 +8,7 @@ use rustc_ast::{
 use rustc_ast_pretty::pprust;
 use rustc_data_structures::fx::FxHashSet;
 use rustc_expand::base::ExtCtxt;
-use rustc_span::Span;
-use rustc_span::symbol::{Ident, Symbol, sym};
+use rustc_span::{Ident, Span, Symbol, sym};
 use thin_vec::{ThinVec, thin_vec};
 
 pub(super) struct Context<'cx, 'a> {

compiler/rustc_builtin_macros/src/autodiff.rs

@@ -20,8 +20,7 @@ mod llvm_enzyme {
         PatKind, TyKind,
     };
     use rustc_expand::base::{Annotatable, ExtCtxt};
-    use rustc_span::symbol::{Ident, kw, sym};
-    use rustc_span::{Span, Symbol};
+    use rustc_span::{Ident, Span, Symbol, kw, sym};
     use thin_vec::{ThinVec, thin_vec};
     use tracing::{debug, trace};
 
@@ -35,7 +34,7 @@ mod llvm_enzyme {
             FnRetTy::Default(_) => false,
         }
     }
-    fn first_ident(x: &MetaItemInner) -> rustc_span::symbol::Ident {
+    fn first_ident(x: &MetaItemInner) -> rustc_span::Ident {
         let segments = &x.meta_item().unwrap().path.segments;
         assert!(segments.len() == 1);
         segments[0].ident

compiler/rustc_builtin_macros/src/cfg_accessible.rs

@@ -4,8 +4,7 @@ use rustc_ast as ast;
 use rustc_expand::base::{Annotatable, ExpandResult, ExtCtxt, Indeterminate, MultiItemModifier};
 use rustc_feature::AttributeTemplate;
 use rustc_parse::validate_attr;
-use rustc_span::Span;
-use rustc_span::symbol::sym;
+use rustc_span::{Span, sym};
 
 use crate::errors;
 

compiler/rustc_builtin_macros/src/cfg_eval.rs

@@ -12,8 +12,7 @@ use rustc_expand::configure;
 use rustc_feature::Features;
 use rustc_parse::parser::{ForceCollect, Parser};
 use rustc_session::Session;
-use rustc_span::Span;
-use rustc_span::symbol::sym;
+use rustc_span::{Span, sym};
 use smallvec::SmallVec;
 use tracing::instrument;
 

compiler/rustc_builtin_macros/src/concat.rs

@@ -2,7 +2,7 @@ use rustc_ast::tokenstream::TokenStream;
 use rustc_ast::{ExprKind, LitKind, UnOp};
 use rustc_expand::base::{DummyResult, ExpandResult, ExtCtxt, MacEager, MacroExpanderResult};
 use rustc_session::errors::report_lit_error;
-use rustc_span::symbol::Symbol;
+use rustc_span::Symbol;
 
 use crate::errors;
 use crate::util::get_exprs_from_tts;

compiler/rustc_builtin_macros/src/concat_idents.rs

@@ -3,8 +3,7 @@ use rustc_ast::token::{self, Token};
 use rustc_ast::tokenstream::{TokenStream, TokenTree};
 use rustc_ast::{AttrVec, DUMMY_NODE_ID, Expr, ExprKind, Path, Ty, TyKind};
 use rustc_expand::base::{DummyResult, ExpandResult, ExtCtxt, MacResult, MacroExpanderResult};
-use rustc_span::Span;
-use rustc_span::symbol::{Ident, Symbol};
+use rustc_span::{Ident, Span, Symbol};
 
 use crate::errors;
 

compiler/rustc_builtin_macros/src/derive.rs

@@ -6,8 +6,7 @@ use rustc_expand::base::{
 use rustc_feature::AttributeTemplate;
 use rustc_parse::validate_attr;
 use rustc_session::Session;
-use rustc_span::symbol::{Ident, sym};
-use rustc_span::{ErrorGuaranteed, Span};
+use rustc_span::{ErrorGuaranteed, Ident, Span, sym};
 
 use crate::cfg_eval::cfg_eval;
 use crate::errors;

compiler/rustc_builtin_macros/src/deriving/clone.rs

@@ -1,8 +1,7 @@
 use rustc_ast::{self as ast, Generics, ItemKind, MetaItem, VariantData};
 use rustc_data_structures::fx::FxHashSet;
 use rustc_expand::base::{Annotatable, ExtCtxt};
-use rustc_span::Span;
-use rustc_span::symbol::{Ident, kw, sym};
+use rustc_span::{Ident, Span, kw, sym};
 use thin_vec::{ThinVec, thin_vec};
 
 use crate::deriving::generic::ty::*;

compiler/rustc_builtin_macros/src/deriving/cmp/eq.rs

@@ -1,8 +1,7 @@
 use rustc_ast::{self as ast, MetaItem};
 use rustc_data_structures::fx::FxHashSet;
 use rustc_expand::base::{Annotatable, ExtCtxt};
-use rustc_span::Span;
-use rustc_span::symbol::sym;
+use rustc_span::{Span, sym};
 use thin_vec::{ThinVec, thin_vec};
 
 use crate::deriving::generic::ty::*;

compiler/rustc_builtin_macros/src/deriving/cmp/ord.rs

@@ -1,7 +1,6 @@
 use rustc_ast::MetaItem;
 use rustc_expand::base::{Annotatable, ExtCtxt};
-use rustc_span::Span;
-use rustc_span::symbol::{Ident, sym};
+use rustc_span::{Ident, Span, sym};
 use thin_vec::thin_vec;
 
 use crate::deriving::generic::ty::*;

compiler/rustc_builtin_macros/src/deriving/cmp/partial_eq.rs

@@ -1,8 +1,7 @@
 use rustc_ast::ptr::P;
 use rustc_ast::{BinOpKind, BorrowKind, Expr, ExprKind, MetaItem, Mutability};
 use rustc_expand::base::{Annotatable, ExtCtxt};
-use rustc_span::Span;
-use rustc_span::symbol::sym;
+use rustc_span::{Span, sym};
 use thin_vec::thin_vec;
 
 use crate::deriving::generic::ty::*;

compiler/rustc_builtin_macros/src/deriving/cmp/partial_ord.rs

@@ -1,7 +1,6 @@
 use rustc_ast::{ExprKind, ItemKind, MetaItem, PatKind};
 use rustc_expand::base::{Annotatable, ExtCtxt};
-use rustc_span::Span;
-use rustc_span::symbol::{Ident, sym};
+use rustc_span::{Ident, Span, sym};
 use thin_vec::thin_vec;
 
 use crate::deriving::generic::ty::*;

compiler/rustc_builtin_macros/src/deriving/coerce_pointee.rs

@@ -10,8 +10,7 @@ use rustc_attr_parsing as attr;
 use rustc_data_structures::flat_map_in_place::FlatMapInPlace;
 use rustc_expand::base::{Annotatable, ExtCtxt};
 use rustc_macros::Diagnostic;
-use rustc_span::symbol::{Ident, sym};
-use rustc_span::{Span, Symbol};
+use rustc_span::{Ident, Span, Symbol, sym};
 use thin_vec::{ThinVec, thin_vec};
 
 use crate::errors;

compiler/rustc_builtin_macros/src/deriving/debug.rs

@@ -1,8 +1,7 @@
 use rustc_ast::{self as ast, EnumDef, MetaItem};
 use rustc_expand::base::{Annotatable, ExtCtxt};
 use rustc_session::config::FmtDebug;
-use rustc_span::Span;
-use rustc_span::symbol::{Ident, Symbol, sym};
+use rustc_span::{Ident, Span, Symbol, sym};
 use thin_vec::{ThinVec, thin_vec};
 
 use crate::deriving::generic::ty::*;

compiler/rustc_builtin_macros/src/deriving/decodable.rs

@@ -3,8 +3,7 @@
 use rustc_ast::ptr::P;
 use rustc_ast::{self as ast, Expr, MetaItem, Mutability};
 use rustc_expand::base::{Annotatable, ExtCtxt};
-use rustc_span::Span;
-use rustc_span::symbol::{Ident, Symbol, sym};
+use rustc_span::{Ident, Span, Symbol, sym};
 use thin_vec::{ThinVec, thin_vec};
 
 use crate::deriving::generic::ty::*;

compiler/rustc_builtin_macros/src/deriving/default.rs

@@ -4,8 +4,7 @@ use rustc_ast as ast;
 use rustc_ast::visit::visit_opt;
 use rustc_ast::{EnumDef, VariantData, attr};
 use rustc_expand::base::{Annotatable, DummyResult, ExtCtxt};
-use rustc_span::symbol::{Ident, kw, sym};
-use rustc_span::{ErrorGuaranteed, Span};
+use rustc_span::{ErrorGuaranteed, Ident, Span, kw, sym};
 use smallvec::SmallVec;
 use thin_vec::{ThinVec, thin_vec};
 

compiler/rustc_builtin_macros/src/deriving/encodable.rs

@@ -87,8 +87,7 @@
 
 use rustc_ast::{AttrVec, ExprKind, MetaItem, Mutability};
 use rustc_expand::base::{Annotatable, ExtCtxt};
-use rustc_span::Span;
-use rustc_span::symbol::{Ident, Symbol, sym};
+use rustc_span::{Ident, Span, Symbol, sym};
 use thin_vec::{ThinVec, thin_vec};
 
 use crate::deriving::generic::ty::*;

compiler/rustc_builtin_macros/src/deriving/generic/mod.rs

@@ -187,8 +187,7 @@ use rustc_ast::{
 };
 use rustc_attr_parsing as attr;
 use rustc_expand::base::{Annotatable, ExtCtxt};
-use rustc_span::symbol::{Ident, Symbol, kw, sym};
-use rustc_span::{DUMMY_SP, Span};
+use rustc_span::{DUMMY_SP, Ident, Span, Symbol, kw, sym};
 use thin_vec::{ThinVec, thin_vec};
 use ty::{Bounds, Path, Ref, Self_, Ty};
 

compiler/rustc_builtin_macros/src/deriving/generic/ty.rs

@@ -6,8 +6,7 @@ use rustc_ast::ptr::P;
 use rustc_ast::{self as ast, Expr, GenericArg, GenericParamKind, Generics, SelfKind};
 use rustc_expand::base::ExtCtxt;
 use rustc_span::source_map::respan;
-use rustc_span::symbol::{Ident, Symbol, kw};
-use rustc_span::{DUMMY_SP, Span};
+use rustc_span::{DUMMY_SP, Ident, Span, Symbol, kw};
 use thin_vec::ThinVec;
 
 /// A path, e.g., `::std::option::Option::<i32>` (global). Has support

compiler/rustc_builtin_macros/src/deriving/hash.rs

@@ -1,7 +1,6 @@
 use rustc_ast::{MetaItem, Mutability};
 use rustc_expand::base::{Annotatable, ExtCtxt};
-use rustc_span::Span;
-use rustc_span::symbol::sym;
+use rustc_span::{Span, sym};
 use thin_vec::thin_vec;
 
 use crate::deriving::generic::ty::*;

compiler/rustc_builtin_macros/src/deriving/mod.rs

@@ -4,8 +4,7 @@ use rustc_ast as ast;
 use rustc_ast::ptr::P;
 use rustc_ast::{GenericArg, MetaItem};
 use rustc_expand::base::{Annotatable, ExpandResult, ExtCtxt, MultiItemModifier};
-use rustc_span::Span;
-use rustc_span::symbol::{Symbol, sym};
+use rustc_span::{Span, Symbol, sym};
 use thin_vec::{ThinVec, thin_vec};
 
 macro path_local($x:ident) {

compiler/rustc_builtin_macros/src/edition_panic.rs

@@ -3,9 +3,8 @@ use rustc_ast::token::Delimiter;
 use rustc_ast::tokenstream::{DelimSpan, TokenStream};
 use rustc_ast::*;
 use rustc_expand::base::*;
-use rustc_span::Span;
 use rustc_span::edition::Edition;
-use rustc_span::symbol::sym;
+use rustc_span::{Span, sym};
 
 /// This expands to either
 /// - `$crate::panic::panic_2015!(...)` or

compiler/rustc_builtin_macros/src/env.rs

@@ -10,8 +10,7 @@ use rustc_ast::token::{self, LitKind};
 use rustc_ast::tokenstream::TokenStream;
 use rustc_ast::{AstDeref, ExprKind, GenericArg, Mutability};
 use rustc_expand::base::{DummyResult, ExpandResult, ExtCtxt, MacEager, MacroExpanderResult};
-use rustc_span::Span;
-use rustc_span::symbol::{Ident, Symbol, kw, sym};
+use rustc_span::{Ident, Span, Symbol, kw, sym};
 use thin_vec::thin_vec;
 
 use crate::errors;

compiler/rustc_builtin_macros/src/errors.rs

@@ -4,8 +4,7 @@ use rustc_errors::{
     SubdiagMessageOp, Subdiagnostic,
 };
 use rustc_macros::{Diagnostic, Subdiagnostic};
-use rustc_span::symbol::Ident;
-use rustc_span::{Span, Symbol};
+use rustc_span::{Ident, Span, Symbol};
 
 #[derive(Diagnostic)]
 #[diag(builtin_macros_requires_cfg_pattern)]

compiler/rustc_builtin_macros/src/format.rs

@@ -13,8 +13,7 @@ use rustc_expand::base::*;
 use rustc_lint_defs::builtin::NAMED_ARGUMENTS_USED_POSITIONALLY;
 use rustc_lint_defs::{BufferedEarlyLint, BuiltinLintDiag, LintId};
 use rustc_parse_format as parse;
-use rustc_span::symbol::{Ident, Symbol};
-use rustc_span::{BytePos, ErrorGuaranteed, InnerSpan, Span};
+use rustc_span::{BytePos, ErrorGuaranteed, Ident, InnerSpan, Span, Symbol};
 
 use crate::errors;
 use crate::util::expr_to_spanned_string;

compiler/rustc_builtin_macros/src/global_allocator.rs

@@ -7,8 +7,7 @@ use rustc_ast::{
     Stmt, StmtKind, Ty, TyKind,
 };
 use rustc_expand::base::{Annotatable, ExtCtxt};
-use rustc_span::Span;
-use rustc_span::symbol::{Ident, Symbol, kw, sym};
+use rustc_span::{Ident, Span, Symbol, kw, sym};
 use thin_vec::{ThinVec, thin_vec};
 
 use crate::errors;

compiler/rustc_builtin_macros/src/lib.rs

@@ -24,7 +24,7 @@ extern crate proc_macro;
 
 use rustc_expand::base::{MacroExpanderFn, ResolverExpand, SyntaxExtensionKind};
 use rustc_expand::proc_macro::BangProcMacro;
-use rustc_span::symbol::sym;
+use rustc_span::sym;
 
 use crate::deriving::*;
 

compiler/rustc_builtin_macros/src/proc_macro_harness.rs

@@ -11,8 +11,7 @@ use rustc_feature::Features;
 use rustc_session::Session;
 use rustc_span::hygiene::AstPass;
 use rustc_span::source_map::SourceMap;
-use rustc_span::symbol::{Ident, Symbol, kw, sym};
-use rustc_span::{DUMMY_SP, Span};
+use rustc_span::{DUMMY_SP, Ident, Span, Symbol, kw, sym};
 use smallvec::smallvec;
 use thin_vec::{ThinVec, thin_vec};
 

compiler/rustc_builtin_macros/src/source_util.rs

@@ -16,8 +16,7 @@ use rustc_parse::parser::{ForceCollect, Parser};
 use rustc_parse::{new_parser_from_file, unwrap_or_emit_fatal};
 use rustc_session::lint::builtin::INCOMPLETE_INCLUDE;
 use rustc_span::source_map::SourceMap;
-use rustc_span::symbol::Symbol;
-use rustc_span::{Pos, Span};
+use rustc_span::{Pos, Span, Symbol};
 use smallvec::SmallVec;
 
 use crate::errors;

compiler/rustc_builtin_macros/src/standard_library_imports.rs

@@ -3,10 +3,9 @@ use rustc_expand::base::{ExtCtxt, ResolverExpand};
 use rustc_expand::expand::ExpansionConfig;
 use rustc_feature::Features;
 use rustc_session::Session;
-use rustc_span::DUMMY_SP;
 use rustc_span::edition::Edition::*;
 use rustc_span::hygiene::AstPass;
-use rustc_span::symbol::{Ident, Symbol, kw, sym};
+use rustc_span::{DUMMY_SP, Ident, Symbol, kw, sym};
 use thin_vec::thin_vec;
 
 pub fn inject(

compiler/rustc_builtin_macros/src/test.rs

@@ -9,8 +9,7 @@ use rustc_ast::{self as ast, GenericParamKind, attr};
 use rustc_ast_pretty::pprust;
 use rustc_errors::{Applicability, Diag, Level};
 use rustc_expand::base::*;
-use rustc_span::symbol::{Ident, Symbol, sym};
-use rustc_span::{ErrorGuaranteed, FileNameDisplayPreference, Span};
+use rustc_span::{ErrorGuaranteed, FileNameDisplayPreference, Ident, Span, Symbol, sym};
 use thin_vec::{ThinVec, thin_vec};
 use tracing::debug;
 

compiler/rustc_builtin_macros/src/test_harness.rs

@@ -16,8 +16,7 @@ use rustc_lint_defs::BuiltinLintDiag;
 use rustc_session::Session;
 use rustc_session::lint::builtin::UNNAMEABLE_TEST_ITEMS;
 use rustc_span::hygiene::{AstPass, SyntaxContext, Transparency};
-use rustc_span::symbol::{Ident, Symbol, sym};
-use rustc_span::{DUMMY_SP, Span};
+use rustc_span::{DUMMY_SP, Ident, Span, Symbol, sym};
 use rustc_target::spec::PanicStrategy;
 use smallvec::smallvec;
 use thin_vec::{ThinVec, thin_vec};

compiler/rustc_builtin_macros/src/trace_macros.rs

@@ -1,7 +1,6 @@
 use rustc_ast::tokenstream::{TokenStream, TokenTree};
 use rustc_expand::base::{DummyResult, ExpandResult, ExtCtxt, MacroExpanderResult};
-use rustc_span::Span;
-use rustc_span::symbol::kw;
+use rustc_span::{Span, kw};
 
 use crate::errors;