[llvm] [AMDGPU] Extend llvm.amdgcn.update.dpp intrinsic to support f64 (PR #91190)

[Vikram Hegde via llvm-commits]

vikramRH wrote:

> As a follow up, can you make AMDGPUInstCombineIntrinsic fold update.dpp.i64 (bitcast (x to i64)) to the different typed intrinsic

Will do, should this be a separate patch ? 

https://github.com/llvm/llvm-project/pull/91190