Convert to inline diagnostics in all codegen backends

Author: bjorn3

messages.ftl

@@ -2,24 +2,24 @@ use rustc_macros::Diagnostic;
 use rustc_span::Span;
 
 #[derive(Diagnostic)]
-#[diag(codegen_gcc_unwinding_inline_asm)]
+#[diag("GCC backend does not support unwinding from inline asm")]
 pub(crate) struct UnwindingInlineAsm {
     #[primary_span]
     pub span: Span,
 }
 
 #[derive(Diagnostic)]
-#[diag(codegen_gcc_copy_bitcode)]
+#[diag("failed to copy bitcode to object file: {$err}")]
 pub(crate) struct CopyBitcode {
     pub err: std::io::Error,
 }
 
 #[derive(Diagnostic)]
-#[diag(codegen_gcc_lto_bitcode_from_rlib)]
+#[diag("failed to get bitcode from object file for LTO ({$gcc_err})")]
 pub(crate) struct LtoBitcodeFromRlib {
     pub gcc_err: String,
 }
 
 #[derive(Diagnostic)]
-#[diag(codegen_gcc_explicit_tail_calls_unsupported)]
+#[diag("explicit tail calls with the 'become' keyword are not implemented in the GCC backend")]
 pub(crate) struct ExplicitTailCallsUnsupported;

src/errors.rs

@@ -27,7 +27,6 @@ extern crate rustc_ast;
 extern crate rustc_codegen_ssa;
 extern crate rustc_data_structures;
 extern crate rustc_errors;
-extern crate rustc_fluent_macro;
 extern crate rustc_fs_util;
 extern crate rustc_hir;
 extern crate rustc_index;
@@ -105,8 +104,6 @@ use tempfile::TempDir;
 use crate::back::lto::ModuleBuffer;
 use crate::gcc_util::{target_cpu, to_gcc_features};
 
-rustc_fluent_macro::fluent_messages! { "../messages.ftl" }
-
 pub struct PrintOnPanic<F: Fn() -> String>(pub F);
 
 impl<F: Fn() -> String> Drop for PrintOnPanic<F> {
@@ -197,10 +194,6 @@ fn load_libgccjit_if_needed(libgccjit_target_lib_file: &Path) {
 }
 
 impl CodegenBackend for GccCodegenBackend {
-    fn locale_resource(&self) -> &'static str {
-        crate::DEFAULT_LOCALE_RESOURCE
-    }
-
     fn name(&self) -> &'static str {
         "gcc"
     }