[llvm] [DXIL] Add frac unary lowering (PR #83465)

[Farzon Lotfi via llvm-commits]

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@@ -233,3 +233,6 @@ def FlattenedThreadIdInGroup : DXILOpMapping<96, flattenedThreadIdInGroup,
                                              "Provides a flattened index for a "
                                              "given thread within a given "
                                              "group (SV_GroupIndex)">;
+def Frac : DXILOpMapping<22, unary, int_dx_frac,
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farzonl wrote:

that makes more sense I was sorting by name, b\c in hlsl_intrinsics.h it is name.

https://github.com/llvm/llvm-project/pull/83465