Migrate VectorOrTensorType/MemRefType shape api to use int64_t instead of int.

PiperOrigin-RevId: 230605756
diff --git a/mlir/lib/Transforms/LoopFusion.cpp b/mlir/lib/Transforms/LoopFusion.cpp
index 94d763f..24914878 100644
--- a/mlir/lib/Transforms/LoopFusion.cpp
+++ b/mlir/lib/Transforms/LoopFusion.cpp
@@ -711,7 +711,7 @@
   // Compute MemRefRegion for 'srcStoreOpInst' at depth 'dstLoopDepth'.
   MemRefRegion region;
   getMemRefRegion(srcStoreOpInst, dstLoopDepth, &region);
-  SmallVector<int, 4> newShape;
+  SmallVector<int64_t, 4> newShape;
   std::vector<SmallVector<int64_t, 4>> lbs;
   SmallVector<int64_t, 8> lbDivisors;
   lbs.reserve(rank);