Fix tidy

Author: antoyo

rustfmt.toml

@@ -19,6 +19,7 @@ ignore = [
     "library/backtrace",
     "library/stdarch",
     "compiler/rustc_codegen_cranelift",
+    "compiler/rustc_codegen_gcc",
     "src/doc/book",
     "src/doc/edition-guide",
     "src/doc/embedded-book",

src/bootstrap/check.rs

@@ -237,11 +237,16 @@ impl Step for CodegenBackend {
     const DEFAULT: bool = true;
 
     fn should_run(run: ShouldRun<'_>) -> ShouldRun<'_> {
-        run.paths(&["compiler/rustc_codegen_cranelift", "rustc_codegen_cranelift"])
+        run.paths(&[
+            "compiler/rustc_codegen_cranelift",
+            "rustc_codegen_cranelift",
+            "compiler/rustc_codegen_gcc",
+            "rustc_codegen_gcc",
+        ])
     }
 
     fn make_run(run: RunConfig<'_>) {
-        for &backend in &[INTERNER.intern_str("cranelift")] {
+        for &backend in &[INTERNER.intern_str("cranelift"), INTERNER.intern_str("gcc")] {
             run.builder.ensure(CodegenBackend { target: run.target, backend });
         }
     }

src/tools/tidy/src/lib.rs

@@ -56,6 +56,7 @@ fn filter_dirs(path: &Path) -> bool {
     let skip = [
         "tidy-test-file",
         "compiler/rustc_codegen_cranelift",
+        "compiler/rustc_codegen_gcc",
         "src/llvm-project",
         "library/backtrace",
         "library/stdarch",