[clang] [llvm] Add Float `Dot` Intrinsic Lowering (PR #86071)

llvmbot wrote: @llvm/pr-subscribers-hlsl @llvm/pr-subscribers-llvm-ir Author: Farzon Lotfi (farzonl) Changes Completes #83626 - `CGBuiltin.cpp` - modify `getDotProductIntrinsic` to be able to emit `dot2`, `dot3`, and `dot4` intrinsics based on element count - `IntrinsicsDirectX.td` - for

[clang] [llvm] Add Float `Dot` Intrinsic Lowering (PR #86071)

https://github.com/farzonl created https://github.com/llvm/llvm-project/pull/86071 Completes #83626 - `CGBuiltin.cpp` - modify `getDotProductIntrinsic` to be able to emit `dot2`, `dot3`, and `dot4` intrinsics based on element count - `IntrinsicsDirectX.td` - for floating point add `dot2`, `dot3