[llvm-branch-commits] [llvm] [VPlan] Implement VPlan-based unit-strideness speculation (PR #182595)

[Ramkumar Ramachandra via llvm-branch-commits]

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@@ -3750,6 +3752,47 @@ class VPExpandSCEVRecipe : public VPSingleDefRecipe {
 #endif
 };
 
+class VPExpandStridePredicatesRecipe : public VPSingleDefRecipe {
+  SCEVUnionPredicate StridePredicates;
+
+public:
+  VPExpandStridePredicatesRecipe(const SCEVUnionPredicate &StridePredicates)
+      : VPSingleDefRecipe(VPRecipeBase::VPExpandStridePredicatesSC, {}),
+        StridePredicates(StridePredicates) {}
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artagnon wrote:

Hm, so this is a SingleDef with no operands? What would be the utility of introducing this new recipe with no operands, execution, or cost, as opposed to absorbing this into ExpandSCEV?

https://github.com/llvm/llvm-project/pull/182595