Add TTIR verification (#119835)
Make sure the TTIR generated is valid before attempting to analyze. Incorrectly written triton code would produce broken TTIR. Minor discussion on https://github.com/openai/triton/issues/3120
Pull Request resolved: https://github.com/pytorch/pytorch/pull/119835
Approved by: https://github.com/aakhundov
ghstack dependencies: #119834
