[llvm] [InterleavedAccess] Construct interleaved access store with shuffles (PR #164000)

[Ehsan Amiri via llvm-commits]

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@@ -3206,6 +3206,11 @@ class LLVM_ABI TargetLoweringBase {
   /// Default to be the minimum interleave factor: 2.
   virtual unsigned getMaxSupportedInterleaveFactor() const { return 2; }
 
+  /// Return true if the target can interleave data with shuffles.
+  virtual bool isProfitableToInterleaveWithGatherScatter() const {
+    return false;
+  }
+
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amehsan wrote:

Does this function implement the cost model or just indicates availability of the instruction? The name sounds like it is a cost model. The simple implementatoin and the comment sounds like it indicates availability of the functionality.

https://github.com/llvm/llvm-project/pull/164000