[llvm] [VPlan] Introduce recipes for VP loads and stores. (PR #87816)

[via llvm-commits]

================
@@ -2436,6 +2469,51 @@ struct VPWidenStoreRecipe final : public VPWidenMemoryRecipe {
     return Op == getAddr() && isConsecutive() && Op != getStoredValue();
   }
 };
+
+/// A recipe for widening store operations with vector-predication intrinsics,
+/// using the value to store, the address to store to , the explicit vector
+/// length and an optional mask.
+struct VPWidenVPStoreRecipe final : public VPWidenMemoryRecipe {
+  VPWidenVPStoreRecipe(VPWidenStoreRecipe *S, VPValue *EVL, VPValue *Mask)
+      : VPWidenMemoryRecipe(VPDef::VPWidenVPStoreSC,
+                            *cast<StoreInst>(&S->getIngredient()),
+                            {S->getAddr(), S->getStoredValue(), EVL},
+                            S->isConsecutive(), false, S->getDebugLoc()) {
+    setMask(Mask);
+  }
+
+  VP_CLASSOF_IMPL(VPDef::VPWidenVPStoreSC)
+
+  /// Return the address accessed by this recipe.
+  VPValue *getStoredValue() const { return getOperand(1); }
+
+  /// Return the EVL operand.
+  VPValue *getEVL() const { return getOperand(2); }
+
+  /// Generate the wide load/store.
----------------
ayalz wrote:

```suggestion
  /// Generate the wide store or scatter.
```

https://github.com/llvm/llvm-project/pull/87816