[llvm] [LV][EVL] Support interleaved access with tail folding by EVL (PR #152070)

[Mel Chen via llvm-commits]

================
@@ -108,6 +109,9 @@ bool VPRecipeBase::mayReadFromMemory() const {
   case VPWidenLoadEVLSC:
   case VPWidenLoadSC:
     return true;
+  case VPInterleaveEVLSC:
+  case VPInterleaveSC:
+    return cast<VPInterleaveBase>(this)->getNumStoreOperands() == 0;
----------------
Mel-Chen wrote:

We already asserted it in the VPInterleaveEVLRecipe constructor.
```
    assert(!IG->isReverse() &&
           "Reversed interleave-group with tail folding is not supported.");
```

https://github.com/llvm/llvm-project/pull/152070