pytorch

a38e43e9 - [perf][1/5] Replace IValue::toString()->string() with IValue::toStringRef() (#85437)

[perf][1/5] Replace IValue::toString()->string() with IValue::toStringRef() (#85437) Summary: `IValue::toString()` creates a `new c10::intrusive_ptr` (like `std::shared_ptr`) and `->string()` immediately accesses it, creating an atomic reference increment/decrement. We can skip both of these operations by calling `IValue::toStringRef()`. Test Plan: CI Reviewed By: jaybean-dev Differential Revision: D39605242 Pull Request resolved: https://github.com/pytorch/pytorch/pull/85437 Approved by: https://github.com/jfix71