compiler: Directly use rustc_abi in lints

Author: workingjubilee

compiler/rustc_lint/src/nonstandard_style.rs

@@ -1,3 +1,4 @@
+use rustc_abi::ExternAbi;
 use rustc_hir::def::{DefKind, Res};
 use rustc_hir::intravisit::FnKind;
 use rustc_hir::{GenericParamKind, PatKind};
@@ -7,7 +8,6 @@ use rustc_session::{declare_lint, declare_lint_pass};
 use rustc_span::def_id::LocalDefId;
 use rustc_span::symbol::{Ident, sym};
 use rustc_span::{BytePos, Span};
-use rustc_target::spec::abi::Abi;
 use {rustc_ast as ast, rustc_attr as attr, rustc_hir as hir};
 
 use crate::lints::{
@@ -397,7 +397,7 @@ impl<'tcx> LateLintPass<'tcx> for NonSnakeCase {
         match &fk {
             FnKind::Method(ident, sig, ..) => match method_context(cx, id) {
                 MethodLateContext::PlainImpl => {
-                    if sig.header.abi != Abi::Rust && cx.tcx.has_attr(id, sym::no_mangle) {
+                    if sig.header.abi != ExternAbi::Rust && cx.tcx.has_attr(id, sym::no_mangle) {
                         return;
                     }
                     self.check_snake_case(cx, "method", ident);
@@ -409,7 +409,7 @@ impl<'tcx> LateLintPass<'tcx> for NonSnakeCase {
             },
             FnKind::ItemFn(ident, _, header) => {
                 // Skip foreign-ABI #[no_mangle] functions (Issue #31924)
-                if header.abi != Abi::Rust && cx.tcx.has_attr(id, sym::no_mangle) {
+                if header.abi != ExternAbi::Rust && cx.tcx.has_attr(id, sym::no_mangle) {
                     return;
                 }
                 self.check_snake_case(cx, "function", ident);

compiler/rustc_lint/src/types.rs

@@ -1,7 +1,7 @@
 use std::iter;
 use std::ops::ControlFlow;
 
-use rustc_abi::{BackendRepr, TagEncoding, Variants, WrappingRange};
+use rustc_abi::{BackendRepr, ExternAbi, TagEncoding, Variants, WrappingRange};
 use rustc_data_structures::fx::FxHashSet;
 use rustc_errors::DiagMessage;
 use rustc_hir::{Expr, ExprKind};
@@ -14,7 +14,6 @@ use rustc_session::{declare_lint, declare_lint_pass, impl_lint_pass};
 use rustc_span::def_id::LocalDefId;
 use rustc_span::symbol::sym;
 use rustc_span::{Span, Symbol, source_map};
-use rustc_target::spec::abi::Abi as SpecAbi;
 use tracing::debug;
 use {rustc_ast as ast, rustc_hir as hir};
 
@@ -1294,10 +1293,10 @@ impl<'a, 'tcx> ImproperCTypesVisitor<'a, 'tcx> {
         self.check_type_for_ffi_and_report_errors(span, ty, true, false);
     }
 
-    fn is_internal_abi(&self, abi: SpecAbi) -> bool {
+    fn is_internal_abi(&self, abi: ExternAbi) -> bool {
         matches!(
             abi,
-            SpecAbi::Rust | SpecAbi::RustCall | SpecAbi::RustCold | SpecAbi::RustIntrinsic
+            ExternAbi::Rust | ExternAbi::RustCall | ExternAbi::RustCold | ExternAbi::RustIntrinsic
         )
     }