[clang] [llvm] [NVPTX] Add builtins and intrinsics for conversions of new FP types (PR #134345)

[Alex MacLean via cfe-commits]

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@@ -703,6 +703,53 @@ let hasSideEffects = false in {
   defm CVT_to_tf32_rz_satf : CVT_TO_TF32<"rz.satfinite", [hasPTX<86>, hasSM<100>]>;
   defm CVT_to_tf32_rn_relu_satf  : CVT_TO_TF32<"rn.relu.satfinite", [hasPTX<86>, hasSM<100>]>;
   defm CVT_to_tf32_rz_relu_satf  : CVT_TO_TF32<"rz.relu.satfinite", [hasPTX<86>, hasSM<100>]>;
+
+  // FP6 conversions.
+  multiclass CVT_TO_F6X2<string F6Name> {
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AlexMaclean wrote:

Since this only has a single string parameter and is called twice, I think it would be a bit clearer to simply use a foreach loop here (and for the below cases as well).

https://github.com/llvm/llvm-project/pull/134345