[clang] [llvm] [HLSL] Implement support for HLSL intrinsic - saturate (PR #104619)

[Farzon Lotfi via cfe-commits]

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@@ -18666,6 +18666,15 @@ case Builtin::BI__builtin_hlsl_elementwise_isinf: {
         /*ReturnType=*/Op0->getType(), CGM.getHLSLRuntime().getRsqrtIntrinsic(),
         ArrayRef<Value *>{Op0}, nullptr, "hlsl.rsqrt");
   }
+  case Builtin::BI__builtin_hlsl_elementwise_saturate: {
+    Value *Op0 = EmitScalarExpr(E->getArg(0));
+    if (!E->getArg(0)->getType()->hasFloatingRepresentation())
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farzonl wrote:

you already handle this case in `clang/lib/Sema/SemaHLSL.cpp` this should just be an assert.

https://github.com/llvm/llvm-project/pull/104619