message: [XLA:CPU] Give parameter loads a meaningful LLVM name.
  The typed parameter loads often get lost after optimization, but the
  untyped loads tend to stick around.  Giving them a name helps with
  readability of the IR.
diff: @@ -1457,6 +1457,7 @@ Status IrEmitter::HandleParameter(HloInstruction* parameter) {
  llvm_ir::EmitBufferIndexingGEP(params, param_number, &ir_builder_);
  llvm::LoadInst* param_address_untyped =
  ir_builder_.CreateLoad(param_address_offset);
  + param_address_untyped->setName(AsStringRef(IrName(parameter, "untyped")));
  if (hlo_module_config_.debug_options()
  .xla_llvm_enable_invariant_load_metadata()) {
  // We never reassign parameters, so this load is invariant.
  