llvm-project

178e1826 - [InstCombine] Add tests for moving exts across identity shuffles.

[InstCombine] Add tests for moving exts across identity shuffles. Also merges redundant check lines in PhaseOrdering/X86/blendv-select.ll to reduce test diff in upcoming change. Precommits tests for https://github.com/llvm/llvm-project/pull/146901.