[clang] [llvm] [HLSL] Adding HLSL `clip` function. (PR #114588)

[Farzon Lotfi via cfe-commits]

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@@ -99,6 +99,7 @@ def int_dx_step : DefaultAttrsIntrinsic<[LLVMMatchType<0>], [llvm_anyfloat_ty, L
 def int_dx_splitdouble : DefaultAttrsIntrinsic<[llvm_anyint_ty, LLVMMatchType<0>], 
     [LLVMScalarOrSameVectorWidth<0, llvm_double_ty>], [IntrNoMem]>;
 def int_dx_radians : DefaultAttrsIntrinsic<[llvm_anyfloat_ty], [LLVMMatchType<0>], [IntrNoMem]>;
+def int_dx_clip : DefaultAttrsIntrinsic<[], [llvm_i1_ty], [IntrNoMem]>;
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farzonl wrote:

I don't think we should call this intrinsic clip when its a direct map to the Discard DXILOp maybe `int_dx_discard` would be a better name?

https://github.com/llvm/llvm-project/pull/114588