[llvm] [RISCV] Enable load clustering by default (PR #73789)

[Alex Bradbury via llvm-commits]

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@@ -1496,12 +1496,18 @@ class TargetInstrInfo : public MCInstrInfo {
   /// to TargetPassConfig::createMachineScheduler() to have an effect.
   ///
   /// \p BaseOps1 and \p BaseOps2 are memory operands of two memory operations.
+  /// \p Offset1 and \p Offset2 are the byte offsets for the memory
+  /// operations.
+  /// \p OffsetIsScalable1 and \p OffsetIsScalable2 indicate if the offset is
+  /// scaled by a runtime quantity.
   /// \p ClusterSize is the number of operations in the resulting load/store
   /// cluster if this hook returns true.
   /// \p NumBytes is the number of bytes that will be loaded from all the
   /// clustered loads if this hook returns true.
   virtual bool shouldClusterMemOps(ArrayRef<const MachineOperand *> BaseOps1,
+                                   int64_t Offset1, bool OffsetIsScalable1,
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asb wrote:

You could imagine trying to use that, but our current heuristic doesn't make use of that information so I don't think it's necessary to expand the parameter list further.

https://github.com/llvm/llvm-project/pull/73789