message: Move build_isa call into make_module
diff: use rustc_session::config::{DebugInfo, OutputType};
  use rustc_session::Session;
  -use cranelift_codegen::isa::TargetIsa;
  use cranelift_object::{ObjectBuilder, ObjectModule};
  use crate::global_asm::GlobalAsmConfig;
  @@ -70,7 +69,9 @@ pub(crate) fn join(self) -> (CodegenResults, FxHashMap<WorkProductId, WorkProduc
  }
  }
  -fn make_module(sess: &Session, isa: Box<dyn TargetIsa>, name: String) -> ObjectModule {
  +fn make_module(sess: &Session, backend_config: &BackendConfig, name: String) -> ObjectModule {
  + let isa = crate::build_isa(sess, backend_config);
  +
  let mut builder =
  ObjectBuilder::new(isa, name + ".o", cranelift_module::default_libcall_names()).unwrap();
  // Unlike cg_llvm, cg_clif defaults to disabling -Zfunction-sections. For cg_llvm binary size
  @@ -211,8 +212,7 @@ fn module_codegen(
  let cgu = tcx.codegen_unit(cgu_name);
  let mono_items = cgu.items_in_deterministic_order(tcx);
  - let isa = crate::build_isa(tcx.sess, &backend_config);
  - let mut module = make_module(tcx.sess, isa, cgu_name.as_str().to_string());
  + let mut module = make_module(tcx.sess, &backend_config, cgu_name.as_str().to_string());
  let mut cx = crate::CodegenCx::new(
  tcx,
  @@ -330,9 +330,7 @@ pub(crate) fn run_aot(
  tcx.sess.abort_if_errors();
  - let isa = crate::build_isa(tcx.sess, &backend_config);
  - let mut allocator_module = make_module(tcx.sess, isa, "allocator_shim".to_string());
  - assert_eq!(pointer_ty(tcx), allocator_module.target_config().pointer_type());
  + let mut allocator_module = make_module(tcx.sess, &backend_config, "allocator_shim".to_string());
  let mut allocator_unwind_context = UnwindContext::new(allocator_module.isa(), true);
  let created_alloc_shim =
  crate::allocator::codegen(tcx, &mut allocator_module, &mut allocator_unwind_context);
  