message: Clean up commented out code in LLVM codegen
diff: @@ -8,7 +8,6 @@ use inkwell::{
  AddressSpace, FloatPredicate, IntPredicate,
  };
  use smallvec::SmallVec;
  -use std::ops::{Deref, DerefMut};
  use std::sync::Arc;
  use wasmer_runtime_core::{
  backend::{Backend, CacheGen, Token},
  @@ -2420,11 +2419,7 @@ impl FunctionCodeGenerator<CodegenError> for LLVMFunctionCodeGenerator {
  [one_value] => {
  self.builder.as_ref().unwrap().build_return(Some(one_value));
  }
  - _ => {
  - // let struct_ty = llvm_sig.get_return_type().as_struct_type();
  - // let ret_struct = struct_ty.const_zero();
  - unimplemented!("multi-value returns not yet implemented")
  - }
  + _ => unimplemented!("multi-value returns not yet implemented"),
  }
  Ok(())
  }
  @@ -2557,7 +2552,6 @@ impl ModuleCodeGenerator<LLVMFunctionCodeGenerator, LLVMBackend, CodegenError>
  mut self,
  module_info: &ModuleInfo,
  ) -> Result<(LLVMBackend, Box<dyn CacheGen>), CodegenError> {
  - // self.module.print_to_stderr();
  let (context, builder, intrinsics) = match self.functions.last_mut() {
  Some(x) => (
  x.context.take().unwrap(),
  @@ -2584,15 +2578,14 @@ impl ModuleCodeGenerator<LLVMFunctionCodeGenerator, LLVMBackend, CodegenError>
  );
  let pass_manager = PassManager::create_for_module();
  - // pass_manager.add_verifier_pass();
  + if cfg!(test) {
  + pass_manager.add_verifier_pass();
  + }
  pass_manager.add_function_inlining_pass();
  pass_manager.add_promote_memory_to_register_pass();
  pass_manager.add_cfg_simplification_pass();
  - // pass_manager.add_instruction_combining_pass();
  pass_manager.add_aggressive_inst_combiner_pass();
  pass_manager.add_merged_load_store_motion_pass();
  - // pass_manager.add_sccp_pass();
  - // pass_manager.add_gvn_pass();
  pass_manager.add_new_gvn_pass();
  pass_manager.add_aggressive_dce_pass();
  pass_manager.run_on_module(&self.module);
  