[llvm] [TTI] Consistently pass the pointer type to getAddressComputationCost. NFCI (PR #152657)

[Simon Pilgrim via llvm-commits]

================
@@ -1675,13 +1675,14 @@ class TargetTransformInfo {
 
   /// \returns The cost of the address computation. For most targets this can be
   /// merged into the instruction indexing mode. Some targets might want to
-  /// distinguish between address computation for memory operations on vector
-  /// types and scalar types. Such targets should override this function.
-  /// The 'SE' parameter holds pointer for the scalar evolution object which
-  /// is used in order to get the Ptr step value in case of constant stride.
-  /// The 'Ptr' parameter holds SCEV of the access pointer.
-  LLVM_ABI InstructionCost getAddressComputationCost(
-      Type *Ty, ScalarEvolution *SE = nullptr, const SCEV *Ptr = nullptr) const;
+  /// distinguish between address computation for memory operations with vector
+  /// types and scalar pointer types. Such targets should override this
+  /// function. The 'SE' parameter holds pointer for the scalar evolution object
+  /// which is used in order to get the Ptr step value in case of constant
+  /// stride. The 'Ptr' parameter holds SCEV of the access pointer.
----------------
RKSimon wrote:

Use doxygen style:
```
  /// function. \p SE holds pointer for the scalar evolution object
  /// which is used in order to get the Ptr step value in case of constant
  /// stride.  \p Ptr holds SCEV of the access pointer.
```

https://github.com/llvm/llvm-project/pull/152657