[AMDGPU][MC] Refactored parsing of dpp ctrlSummary of changes:- simplified code to improve maintainability;- replaced lex() with higher level parser functions;- improved errors handling.Reviewers: rampitecDifferential Revision: https://reviews.llvm.org/D94777
[LoopRotate] Precommit test for prepare-for-lto handling.Precommit test for D94232.
Fix for sanitizer issue in 55c557a