[clang] [Headers][X86] VectorExprEvaluator::VisitCallExpr / InterpretBuiltin - allow PALIGNR byte shift intrinsics to be used in constexpr (PR #162005)

[Ye Tian via cfe-commits]

TianYe717 wrote:

> This should wait until #157403 is completed

Thanks! I will wait until #157403 is merged before updating or proceeding with this PR.

https://github.com/llvm/llvm-project/pull/162005