Port diagnostics created by Handler

compiler/rustc_codegen_llvm/src/lib.rs

@@ -12,6 +12,8 @@
 #![feature(iter_intersperse)]
 #![recursion_limit = "256"]
 #![allow(rustc::potential_query_instability)]
+#![deny(rustc::untranslatable_diagnostic)]
+#![deny(rustc::diagnostic_outside_of_impl)]
 
 #[macro_use]
 extern crate rustc_macros;
@@ -20,6 +22,7 @@ extern crate tracing;
 
 use back::write::{create_informational_target_machine, create_target_machine};
 
+use errors::FailParsingTargetMachineConfigToTargetMachine;
 pub use llvm_util::target_features;
 use rustc_ast::expand::allocator::AllocatorKind;
 use rustc_codegen_ssa::back::lto::{LtoModuleCodegen, SerializedModule, ThinModule};
@@ -413,7 +416,7 @@ impl ModuleLlvm {
             let tm = match (cgcx.tm_factory)(tm_factory_config) {
                 Ok(m) => m,
                 Err(e) => {
-                    handler.struct_err(&e).emit();
+                    handler.emit_err(FailParsingTargetMachineConfigToTargetMachine { error: e });
                     return Err(FatalError);
                 }
             };