[llvm] [clang-tools-extra] [clang] [VPlan] Add new VPUniformPerUFRecipe, use for step truncation. (PR #78113)

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@@ -1338,6 +1339,34 @@ class VPWidenCastRecipe : public VPRecipeWithIRFlags {
   Type *getResultType() const { return ResultTy; }
 };
 
+/// VPScalarCastRecipe is a recipe o create scalar cast instructions.
+class VPScalarCastRecipe : public VPRecipeBase, public VPValue {
+  /// Cast instruction opcode.
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ayalz wrote:

nit: comment adds little knowledge if any.

https://github.com/llvm/llvm-project/pull/78113