[mlir][sparse] Fix memory leaks (part 3)

This commit fixes memory leaks in sparse tensor integration tests by adding `bufferization.dealloc_tensor` ops.

Note: Buffer deallocation will be automated in the future with the ownership-based buffer deallocation pass, making `dealloc_tensor` obsolete (only codegen path, not when using the runtime library).

Author: matthias-springer

mlir/test/Integration/Dialect/SparseTensor/CPU/dual_sparse_conv_2d.mlir

@@ -222,6 +222,7 @@ module {
     bufferization.dealloc_tensor %sparse_filter_CD : tensor<3x3xi32, #CDR>
     bufferization.dealloc_tensor %sparse_filter_CSC : tensor<3x3xi32, #CSC>
 
+    bufferization.dealloc_tensor %0 : tensor<6x6xi32>
     bufferization.dealloc_tensor %2 : tensor<6x6xi32, #DCSR>
     bufferization.dealloc_tensor %3 : tensor<6x6xi32, #CSR>
     bufferization.dealloc_tensor %4 : tensor<6x6xi32, #CDR>

mlir/test/Integration/Dialect/SparseTensor/CPU/sparse_conv_2d.mlir

@@ -273,11 +273,14 @@ module {
     bufferization.dealloc_tensor %sparse_input_CSC : tensor<8x8xi32, #CSC>
     bufferization.dealloc_tensor %sparse_input_CD : tensor<8x8xi32, #CDR>
 
+    bufferization.dealloc_tensor %0 : tensor<6x6xi32>
     bufferization.dealloc_tensor %1 : tensor<6x6xi32, #DCSR>
     bufferization.dealloc_tensor %2 : tensor<6x6xi32, #DCSR>
     bufferization.dealloc_tensor %3 : tensor<6x6xi32, #CSR>
     bufferization.dealloc_tensor %4 : tensor<6x6xi32, #CDR>
     bufferization.dealloc_tensor %5 : tensor<6x6xi32, #CSC>
+    bufferization.dealloc_tensor %6 : tensor<6x6xi32>
+
     return
   }
 }

mlir/test/Integration/Dialect/SparseTensor/CPU/sparse_conversion_sparse2dense.mlir

@@ -233,6 +233,19 @@ module {
     // bufferization.dealloc_tensor %s2pp4 : tensor<2x?x?xf64, #Tensor4>
     // bufferization.dealloc_tensor %s2pp5 : tensor<2x?x?xf64, #Tensor5>
     // bufferization.dealloc_tensor %s2pp6 : tensor<2x?x?xf64, #Tensor6>
+
+    bufferization.dealloc_tensor %d2341 : tensor<2x3x4xf64>
+    bufferization.dealloc_tensor %d2342 : tensor<2x3x4xf64>
+    bufferization.dealloc_tensor %d2343 : tensor<2x3x4xf64>
+    bufferization.dealloc_tensor %d2344 : tensor<2x3x4xf64>
+    bufferization.dealloc_tensor %d2345 : tensor<2x3x4xf64>
+    bufferization.dealloc_tensor %d2346 : tensor<2x3x4xf64>
+    bufferization.dealloc_tensor %dp344 : tensor<?x3x4xf64>
+    bufferization.dealloc_tensor %d2p45 : tensor<2x?x4xf64>
+    bufferization.dealloc_tensor %d23p6 : tensor<2x3x?xf64>
+    bufferization.dealloc_tensor %dp3p4 : tensor<?x3x?xf64>
+    bufferization.dealloc_tensor %dpp45 : tensor<?x?x4xf64>
+
     return
   }
 }

mlir/test/Integration/Dialect/SparseTensor/CPU/sparse_conversion_sparse2sparse.mlir

@@ -114,12 +114,14 @@ module {
     call @dump(%d31) : (tensor<2x3x4xf64>) -> ()
 
     //
-    // Release sparse tensors.
+    // Release tensors.
     //
     bufferization.dealloc_tensor %t13 : tensor<2x3x4xf64, #Tensor3>
     bufferization.dealloc_tensor %t31 : tensor<2x3x4xf64, #Tensor1>
     bufferization.dealloc_tensor %s1 : tensor<2x3x4xf64, #Tensor1>
     bufferization.dealloc_tensor %s3 : tensor<2x3x4xf64, #Tensor3>
+    bufferization.dealloc_tensor %d13 : tensor<2x3x4xf64>
+    bufferization.dealloc_tensor %d31 : tensor<2x3x4xf64>
 
     return
   }
@@ -167,12 +169,14 @@ module {
     call @dump(%d31) : (tensor<2x3x4xf64>) -> ()
 
     //
-    // Release sparse tensors.
+    // Release tensors.
     //
     bufferization.dealloc_tensor %t13 : tensor<2x3x4xf64, #SingletonTensor3>
     bufferization.dealloc_tensor %t31 : tensor<2x3x4xf64, #SingletonTensor1>
     bufferization.dealloc_tensor %s1 : tensor<2x3x4xf64, #SingletonTensor1>
     bufferization.dealloc_tensor %s3 : tensor<2x3x4xf64, #SingletonTensor3>
+    bufferization.dealloc_tensor %d13 : tensor<2x3x4xf64>
+    bufferization.dealloc_tensor %d31 : tensor<2x3x4xf64>
 
     return
   }