Replace Symbol::intern calls with preinterned symbols

compiler/rustc_span/src/symbol.rs

@@ -297,6 +297,7 @@ symbols! {
         Return,
         Right,
         Rust,
+        RustaceansAreAwesome,
         RustcDecodable,
         RustcEncodable,
         RwLock,
@@ -377,6 +378,7 @@ symbols! {
         adt_const_params,
         advanced_slice_patterns,
         adx_target_feature,
+        aes,
         aggregate_raw_ptr,
         alias,
         align,
@@ -439,6 +441,7 @@ symbols! {
         associated_types,
         assume,
         assume_init,
+        asterisk: "*",
         async_await,
         async_call,
         async_call_mut,
@@ -519,6 +522,7 @@ symbols! {
         btreeset_iter,
         builtin_syntax,
         c,
+        c_dash_variadic,
         c_str,
         c_str_literals,
         c_unwind,
@@ -649,6 +653,7 @@ symbols! {
         const_trait_bound_opt_out,
         const_trait_impl,
         const_try,
+        const_ty_placeholder: "<const_ty>",
         constant,
         constructor,
         convert_identity,
@@ -778,6 +783,7 @@ symbols! {
         drop_types_in_const,
         dropck_eyepatch,
         dropck_parametricity,
+        dummy_cgu_name,
         dylib,
         dyn_compatible_for_dispatch,
         dyn_metadata,
@@ -921,6 +927,7 @@ symbols! {
         fmuladdf32,
         fmuladdf64,
         fn_align,
+        fn_body,
         fn_delegation,
         fn_must_use,
         fn_mut,
@@ -961,6 +968,7 @@ symbols! {
         fs_create_dir,
         fsub_algebraic,
         fsub_fast,
+        fsxr,
         full,
         fundamental,
         fused_iterator,
@@ -1384,6 +1392,7 @@ symbols! {
         on,
         on_unimplemented,
         opaque,
+        opaque_module_name_placeholder: "<opaque>",
         open_options_new,
         ops,
         opt_out_copy,
@@ -1652,6 +1661,7 @@ symbols! {
         rust_eh_catch_typeinfo,
         rust_eh_personality,
         rust_logo,
+        rust_out,
         rustc,
         rustc_abi,
         rustc_allocator,
@@ -1774,6 +1784,8 @@ symbols! {
         self_in_typedefs,
         self_struct_ctor,
         semitransparent,
+        sha2,
+        sha3,
         sha512_sm_x86,
         shadow_call_stack,
         shallow,
@@ -1887,6 +1899,7 @@ symbols! {
         sreg,
         sreg_low16,
         sse,
+        sse2,
         sse4a_target_feature,
         stable,
         staged_api,
@@ -2173,6 +2186,7 @@ symbols! {
         wrapping_sub,
         wreg,
         write_bytes,
+        write_fmt,
         write_macro,
         write_str,
         write_via_move,