session: diagnostic migration lint on more fns

Apply the diagnostic migration lint to more functions on `Session`.

Signed-off-by: David Wood <david.wood@huawei.com>

compiler/rustc_codegen_llvm/src/errors.rs

@@ -1,10 +1,11 @@
 use std::borrow::Cow;
+use std::ffi::CString;
+use std::path::Path;
 
-use rustc_errors::fluent;
-use rustc_errors::DiagnosticBuilder;
-use rustc_errors::ErrorGuaranteed;
-use rustc_errors::Handler;
-use rustc_errors::IntoDiagnostic;
+use rustc_data_structures::small_c_str::SmallCStr;
+use rustc_errors::{
+    fluent, DiagnosticBuilder, EmissionGuarantee, ErrorGuaranteed, Handler, IntoDiagnostic,
+};
 use rustc_macros::{Diagnostic, Subdiagnostic};
 use rustc_span::Span;
 
@@ -81,10 +82,18 @@ pub(crate) struct DlltoolFailImportLibrary<'a> {
 #[note]
 pub(crate) struct DynamicLinkingWithLTO;
 
-#[derive(Diagnostic)]
-#[diag(codegen_llvm_fail_parsing_target_machine_config_to_target_machine)]
-pub(crate) struct FailParsingTargetMachineConfigToTargetMachine {
-    pub error: String,
+pub(crate) struct ParseTargetMachineConfig<'a>(pub LlvmError<'a>);
+
+impl<EM: EmissionGuarantee> IntoDiagnostic<'_, EM> for ParseTargetMachineConfig<'_> {
+    fn into_diagnostic(self, sess: &'_ Handler) -> DiagnosticBuilder<'_, EM> {
+        let diag: DiagnosticBuilder<'_, EM> = self.0.into_diagnostic(sess);
+        let (message, _) = diag.styled_message().first().expect("`LlvmError` with no message");
+        let message = sess.eagerly_translate_to_string(message.clone(), diag.args());
+
+        let mut diag = sess.struct_diagnostic(fluent::codegen_llvm_parse_target_machine_config);
+        diag.set_arg("error", message);
+        diag
+    }
 }
 
 pub(crate) struct TargetFeatureDisableOrEnable<'a> {
@@ -110,3 +119,99 @@ impl IntoDiagnostic<'_, ErrorGuaranteed> for TargetFeatureDisableOrEnable<'_> {
         diag
     }
 }
+
+#[derive(Diagnostic)]
+#[diag(codegen_llvm_lto_disallowed)]
+pub(crate) struct LtoDisallowed;
+
+#[derive(Diagnostic)]
+#[diag(codegen_llvm_lto_dylib)]
+pub(crate) struct LtoDylib;
+
+#[derive(Diagnostic)]
+#[diag(codegen_llvm_lto_bitcode_from_rlib)]
+pub(crate) struct LtoBitcodeFromRlib {
+    pub llvm_err: String,
+}
+
+#[derive(Diagnostic)]
+pub enum LlvmError<'a> {
+    #[diag(codegen_llvm_write_output)]
+    WriteOutput { path: &'a Path },
+    #[diag(codegen_llvm_target_machine)]
+    CreateTargetMachine { triple: SmallCStr },
+    #[diag(codegen_llvm_run_passes)]
+    RunLlvmPasses,
+    #[diag(codegen_llvm_serialize_module)]
+    SerializeModule { name: &'a str },
+    #[diag(codegen_llvm_write_ir)]
+    WriteIr { path: &'a Path },
+    #[diag(codegen_llvm_prepare_thin_lto_context)]
+    PrepareThinLtoContext,
+    #[diag(codegen_llvm_load_bitcode)]
+    LoadBitcode { name: CString },
+    #[diag(codegen_llvm_write_thinlto_key)]
+    WriteThinLtoKey { err: std::io::Error },
+    #[diag(codegen_llvm_multiple_source_dicompileunit)]
+    MultipleSourceDiCompileUnit,
+    #[diag(codegen_llvm_prepare_thin_lto_module)]
+    PrepareThinLtoModule,
+    #[diag(codegen_llvm_parse_bitcode)]
+    ParseBitcode,
+}
+
+pub(crate) struct WithLlvmError<'a>(pub LlvmError<'a>, pub String);
+
+impl<EM: EmissionGuarantee> IntoDiagnostic<'_, EM> for WithLlvmError<'_> {
+    fn into_diagnostic(self, sess: &'_ Handler) -> DiagnosticBuilder<'_, EM> {
+        use LlvmError::*;
+        let msg_with_llvm_err = match &self.0 {
+            WriteOutput { .. } => fluent::codegen_llvm_write_output_with_llvm_err,
+            CreateTargetMachine { .. } => fluent::codegen_llvm_target_machine_with_llvm_err,
+            RunLlvmPasses => fluent::codegen_llvm_run_passes_with_llvm_err,
+            SerializeModule { .. } => fluent::codegen_llvm_serialize_module_with_llvm_err,
+            WriteIr { .. } => fluent::codegen_llvm_write_ir_with_llvm_err,
+            PrepareThinLtoContext => fluent::codegen_llvm_prepare_thin_lto_context_with_llvm_err,
+            LoadBitcode { .. } => fluent::codegen_llvm_load_bitcode_with_llvm_err,
+            WriteThinLtoKey { .. } => fluent::codegen_llvm_write_thinlto_key_with_llvm_err,
+            MultipleSourceDiCompileUnit => {
+                fluent::codegen_llvm_multiple_source_dicompileunit_with_llvm_err
+            }
+            PrepareThinLtoModule => fluent::codegen_llvm_prepare_thin_lto_module_with_llvm_err,
+            ParseBitcode => fluent::codegen_llvm_parse_bitcode_with_llvm_err,
+        };
+        let mut diag = self.0.into_diagnostic(sess);
+        diag.set_primary_message(msg_with_llvm_err);
+        diag.set_arg("llvm_err", self.1);
+        diag
+    }
+}
+
+#[derive(Diagnostic)]
+#[diag(codegen_llvm_from_llvm_optimization_diag)]
+pub(crate) struct FromLlvmOptimizationDiag<'a> {
+    pub filename: &'a str,
+    pub line: std::ffi::c_uint,
+    pub column: std::ffi::c_uint,
+    pub pass_name: &'a str,
+    pub message: &'a str,
+}
+
+#[derive(Diagnostic)]
+#[diag(codegen_llvm_from_llvm_diag)]
+pub(crate) struct FromLlvmDiag {
+    pub message: String,
+}
+
+#[derive(Diagnostic)]
+#[diag(codegen_llvm_write_bytecode)]
+pub(crate) struct WriteBytecode<'a> {
+    pub path: &'a Path,
+    pub err: std::io::Error,
+}
+
+#[derive(Diagnostic)]
+#[diag(codegen_llvm_copy_bitcode)]
+pub(crate) struct CopyBitcode {
+    pub err: std::io::Error,
+}