[llvm] [ADT] Update hash function of uint64_t for DenseMap (PR #95734)

[Chuanqi Xu via llvm-commits]

ChuanqiXu9 wrote:

> This patch can still use combineHashValue , but probably change combineHashValue((uint32_t)x, x>>32) to combineHashValue(x>>32, (uint32_t)x) to avoid a ROR operation.

Done

https://github.com/llvm/llvm-project/pull/95734