Farzon Lotfi 081a66ffac [DXIL] implement dot intrinsic lowering for integers (#85662) ...

this implements part 1 of 2 for #83626
- `CGBuiltin.cpp` - modified to have seperate cases for signed and
unsigned integers.
- `SemaChecking.cpp` - modified to prevent the generation of a double
dot product intrinsic if the builtin were to be called directly.
- `IntrinsicsDirectX.td` creation of the signed and unsigned dot
intrinsics needed for instruction expansion.
- `DXILIntrinsicExpansion.cpp` - handle instruction expansion cases for
integer dot product.

2024-03-19 12:03:43 -04:00

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