ARM-software · andflo-Arm · Feb 19, 2026
diff --git a/arm_compute/core/ITensorInfo.h b/arm_compute/core/ITensorInfo.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016-2025 Arm Limited.
+ * Copyright (c) 2016-2026 Arm Limited.
  *
  * SPDX-License-Identifier: MIT
  *
@@ -56,6 +56,10 @@ class ITensorInfo : public misc::ICloneable<ITensorInfo>
     using Id = int32_t;
     /** An invalid tensor id within a domain */
     static constexpr Id invalid_tensor_id = 0;
+    /** Named constant for commonly used value */
+    static constexpr size_t one_channel = 1u;
+    /** Named constant for commonly used value */
+    static constexpr size_t two_channels = 2u;
     /** Get the value representing dynamic dimension state
      *
      * @return Value representing dynamic dimension state

diff --git a/src/core/CL/kernels/CLArgMinMaxLayerKernel.cpp b/src/core/CL/kernels/CLArgMinMaxLayerKernel.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2019-2021, 2023 Arm Limited.
+ * Copyright (c) 2019-2021, 2023, 2026 Arm Limited.
  *
  * SPDX-License-Identifier: MIT
  *
@@ -30,9 +30,9 @@
 #include "arm_compute/core/TensorInfo.h"
 #include "arm_compute/core/Utils.h"
 #include "arm_compute/core/utils/helpers/AdjustVecSize.h"
-#include "arm_compute/core/Validate.h"
 
 #include "src/core/CL/CLValidate.h"
+#include "src/core/CPP/Validate.h"
 #include "src/core/helpers/AutoConfiguration.h"
 #include "src/core/helpers/WindowHelpers.h"
 #include "support/StringSupport.h"
@@ -44,10 +44,13 @@ namespace
 Status validate_arguments(const ITensorInfo *input, const ITensorInfo *output, unsigned int axis, ReductionOperation op)
 {
     ARM_COMPUTE_RETURN_ERROR_ON_NULLPTR(input, output);
+    ARM_COMPUTE_RETURN_ERROR_ON_SIZE_UNSUPPORTED(input);
     ARM_COMPUTE_RETURN_ERROR_ON_F16_UNSUPPORTED(input);
-    ARM_COMPUTE_RETURN_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(input, 1, DataType::QASYMM8, DataType::QASYMM8_SIGNED,
-                                                         DataType::S32, DataType::F16, DataType::F32);
-    ARM_COMPUTE_RETURN_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(output, 1, DataType::S32, DataType::S64);
+    ARM_COMPUTE_RETURN_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(input, ITensorInfo::one_channel, DataType::QASYMM8,
+                                                         DataType::QASYMM8_SIGNED, DataType::S32, DataType::F16,
+                                                         DataType::F32);
+    ARM_COMPUTE_RETURN_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(output, ITensorInfo::one_channel, DataType::S32,
+                                                         DataType::S64);
 
     ARM_COMPUTE_RETURN_ERROR_ON_MSG(op != ReductionOperation::ARG_IDX_MAX && op != ReductionOperation::ARG_IDX_MIN,
                                     "Only ARG_IDX_MAX and ARG_IDX_MIN are supported");
@@ -57,8 +60,13 @@ Status validate_arguments(const ITensorInfo *input, const ITensorInfo *output, u
 
     if (output->total_size() != 0)
     {
-        ARM_COMPUTE_RETURN_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(output, 1, DataType::U32, DataType::S32, DataType::S64,
-                                                             DataType::U64);
+        ARM_COMPUTE_RETURN_ERROR_ON_SIZE_UNSUPPORTED(output);
+    }
+    else
+    {
+        // Assume largest possible data type since we don't know.
+        const auto output_info = TensorInfo(input->tensor_shape(), ITensorInfo::one_channel, DataType::S64);
+        ARM_COMPUTE_RETURN_ERROR_ON_SIZE_UNSUPPORTED(&output_info);
     }
 
     return Status{};

diff --git a/src/core/CL/kernels/CLBatchNormalizationLayerKernel.cpp b/src/core/CL/kernels/CLBatchNormalizationLayerKernel.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017-2021, 2023 Arm Limited.
+ * Copyright (c) 2017-2021, 2023, 2026 Arm Limited.
  *
  * SPDX-License-Identifier: MIT
  *
@@ -34,6 +34,7 @@
 #include "arm_compute/core/utils/StringUtils.h"
 
 #include "src/core/CL/CLValidate.h"
+#include "src/core/CPP/Validate.h"
 #include "src/core/helpers/AutoConfiguration.h"
 #include "src/core/helpers/WindowHelpers.h"
 #include "support/StringSupport.h"
@@ -52,19 +53,23 @@ Status validate_arguments(const ITensorInfo  *input,
                           ActivationLayerInfo act_info)
 {
     ARM_COMPUTE_UNUSED(epsilon);
+    ARM_COMPUTE_RETURN_ERROR_ON_NULLPTR(input, mean, var);
+    ARM_COMPUTE_RETURN_ERROR_ON_SIZE_UNSUPPORTED(input, mean, var);
     ARM_COMPUTE_RETURN_ERROR_ON_F16_UNSUPPORTED(input);
-    ARM_COMPUTE_RETURN_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(input, 1, DataType::F16, DataType::F32);
+    ARM_COMPUTE_RETURN_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(input, ITensorInfo::one_channel, DataType::F16, DataType::F32);
     ARM_COMPUTE_RETURN_ERROR_ON_MISMATCHING_SHAPES(mean, var);
     ARM_COMPUTE_RETURN_ERROR_ON_MISMATCHING_DATA_TYPES(input, mean, var);
     ARM_COMPUTE_RETURN_ERROR_ON(input->dimension(get_data_layout_dimension_index(
                                     input->data_layout(), DataLayoutDimension::CHANNEL)) != mean->dimension(0));
     if (beta != nullptr)
     {
+        ARM_COMPUTE_RETURN_ERROR_ON_SIZE_UNSUPPORTED(beta);
         ARM_COMPUTE_RETURN_ERROR_ON_MISMATCHING_SHAPES(mean, beta);
         ARM_COMPUTE_RETURN_ERROR_ON_MISMATCHING_DATA_TYPES(input, beta);
     }
     if (gamma != nullptr)
     {
+        ARM_COMPUTE_RETURN_ERROR_ON_SIZE_UNSUPPORTED(gamma);
         ARM_COMPUTE_RETURN_ERROR_ON_MISMATCHING_SHAPES(mean, gamma);
         ARM_COMPUTE_RETURN_ERROR_ON_MISMATCHING_DATA_TYPES(input, gamma);
     }
@@ -82,10 +87,16 @@ Status validate_arguments(const ITensorInfo  *input,
 
     if (output != nullptr && output->total_size() != 0)
     {
+        ARM_COMPUTE_RETURN_ERROR_ON_SIZE_UNSUPPORTED(output);
         ARM_COMPUTE_RETURN_ERROR_ON_MISMATCHING_SHAPES(input, output);
         ARM_COMPUTE_RETURN_ERROR_ON_MISMATCHING_DATA_LAYOUT(input, output);
         ARM_COMPUTE_RETURN_ERROR_ON_MISMATCHING_DATA_TYPES(input, output);
     }
+    else
+    {
+        // No configured output. Since `output` is expected to match `input`,
+        // there's nothing extra to check in this case.
+    }
 
     return Status{};
 }

diff --git a/src/core/CL/kernels/CLBatchToSpaceLayerKernel.cpp b/src/core/CL/kernels/CLBatchToSpaceLayerKernel.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2018-2021, 2023 Arm Limited.
+ * Copyright (c) 2018-2021, 2023, 2026 Arm Limited.
  *
  * SPDX-License-Identifier: MIT
  *
@@ -30,6 +30,7 @@
 #include "arm_compute/core/utils/StringUtils.h"
 
 #include "src/core/CL/CLValidate.h"
+#include "src/core/CPP/Validate.h"
 #include "src/core/helpers/AutoConfiguration.h"
 #include "src/core/helpers/WindowHelpers.h"
 #include "support/StringSupport.h"
@@ -42,16 +43,22 @@ namespace
 Status validate_arguments(const ITensorInfo *input, const ITensorInfo *block_info, const ITensorInfo *output)
 {
     ARM_COMPUTE_RETURN_ERROR_ON_NULLPTR(input, block_info, output);
-    ARM_COMPUTE_RETURN_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(block_info, 1, DataType::S32);
+    ARM_COMPUTE_RETURN_ERROR_ON_SIZE_UNSUPPORTED(input, block_info);
+    ARM_COMPUTE_RETURN_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(block_info, ITensorInfo::one_channel, DataType::S32);
     ARM_COMPUTE_RETURN_ERROR_ON(input->num_dimensions() > 4);
     ARM_COMPUTE_RETURN_ERROR_ON(input->data_type() == DataType::UNKNOWN);
 
     // Validate output if initialized
     if (output->total_size() != 0)
     {
+        ARM_COMPUTE_RETURN_ERROR_ON_SIZE_UNSUPPORTED(output);
         ARM_COMPUTE_RETURN_ERROR_ON(output->num_dimensions() > 4);
         ARM_COMPUTE_RETURN_ERROR_ON_MISMATCHING_DATA_TYPES(input, output);
     }
+    else
+    {
+        // Ignored; dynamic block is deprecated.
+    }
 
     return Status{};
 }
@@ -62,6 +69,8 @@ Status validate_arguments_static(const ITensorInfo *input,
                                  const CropInfo    &crop_info)
 {
     ARM_COMPUTE_RETURN_ERROR_ON_NULLPTR(input, output);
+    ARM_COMPUTE_RETURN_ERROR_ON_SIZE_UNSUPPORTED(input);
+    ARM_COMPUTE_RETURN_ERROR_ON(input->num_channels() != ITensorInfo::one_channel);
     ARM_COMPUTE_RETURN_ERROR_ON(input->num_dimensions() > 4);
     ARM_COMPUTE_RETURN_ERROR_ON(block_shape_x <= 0);
     ARM_COMPUTE_RETURN_ERROR_ON(block_shape_y <= 0);
@@ -70,16 +79,23 @@ Status validate_arguments_static(const ITensorInfo *input,
     const int        idx_batch   = get_data_layout_dimension_index(data_layout, DataLayoutDimension::BATCHES);
     ARM_COMPUTE_RETURN_ERROR_ON(input->tensor_shape()[idx_batch] % (block_shape_x * block_shape_y) != 0);
 
+    const TensorShape expected_output_shape = compute_batch_to_space_shape(input->data_layout(), input->tensor_shape(),
+                                                                           block_shape_x, block_shape_y, crop_info);
+
     // Validate output if initialized
     if (output->total_size() != 0)
     {
-        const TensorShape expected_output_shape = compute_batch_to_space_shape(
-            input->data_layout(), input->tensor_shape(), block_shape_x, block_shape_y, crop_info);
+        ARM_COMPUTE_RETURN_ERROR_ON_SIZE_UNSUPPORTED(output);
         const TensorInfo expected_output = output->clone()->set_tensor_shape(expected_output_shape);
         ARM_COMPUTE_RETURN_ERROR_ON_MISMATCHING_SHAPES(output, &expected_output);
         ARM_COMPUTE_RETURN_ERROR_ON(output->num_dimensions() > 4);
         ARM_COMPUTE_RETURN_ERROR_ON_MISMATCHING_DATA_TYPES(input, output);
     }
+    else
+    {
+        const auto output_info = TensorInfo(expected_output_shape, ITensorInfo::one_channel, input->data_type());
+        ARM_COMPUTE_RETURN_ERROR_ON_SIZE_UNSUPPORTED(&output_info);
+    }
 
     return Status{};
 }

diff --git a/src/core/CL/kernels/CLBitwiseKernel.cpp b/src/core/CL/kernels/CLBitwiseKernel.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2020-2021, 2023 Arm Limited.
+ * Copyright (c) 2020-2021, 2023, 2026 Arm Limited.
  *
  * SPDX-License-Identifier: MIT
  *
@@ -31,6 +31,7 @@
 #include "arm_compute/core/utils/helpers/AdjustVecSize.h"
 #include "arm_compute/core/Validate.h"
 
+#include "src/core/CPP/Validate.h"
 #include "src/core/helpers/AutoConfiguration.h"
 #include "src/core/helpers/WindowHelpers.h"
 #include "support/StringSupport.h"
@@ -49,17 +50,20 @@ void CLBitwiseKernel::configure(const CLCompileContext &compile_context,
                                 BitwiseOperation        op)
 {
     ARM_COMPUTE_ERROR_ON_NULLPTR(input1);
-    ARM_COMPUTE_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(input1, 1, DataType::U8);
+    ARM_COMPUTE_ERROR_ON_SIZE_UNSUPPORTED(input1->info());
+    ARM_COMPUTE_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(input1, ITensorInfo::one_channel, DataType::U8);
     if (op != BitwiseOperation::NOT)
     {
         ARM_COMPUTE_ERROR_ON_NULLPTR(input2);
-        ARM_COMPUTE_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(input2, 1, DataType::U8);
+        ARM_COMPUTE_ERROR_ON_SIZE_UNSUPPORTED(input2->info());
+        ARM_COMPUTE_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(input2, ITensorInfo::one_channel, DataType::U8);
     }
     ARM_COMPUTE_ERROR_ON_NULLPTR(output);
-    ARM_COMPUTE_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(output, 1, DataType::U8);
+    ARM_COMPUTE_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(output, ITensorInfo::one_channel, DataType::U8);
 
-    // Output auto inizialitation if not yet initialized
+    // Output auto initialization if not yet initialized
     auto_init_if_empty(*(output->info()), *(input1->info()));
+    ARM_COMPUTE_ERROR_ON_SIZE_UNSUPPORTED(output->info());
     auto padding_info = get_padding_info({input1, input2, output});
 
     // Configure kernel window

diff --git a/src/core/CL/kernels/CLBoundingBoxTransformKernel.cpp b/src/core/CL/kernels/CLBoundingBoxTransformKernel.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2018-2021, 2023 Arm Limited.
+ * Copyright (c) 2018-2021, 2023, 2026 Arm Limited.
  *
  * SPDX-License-Identifier: MIT
  *
@@ -33,6 +33,7 @@
 #include "arm_compute/core/utils/StringUtils.h"
 
 #include "src/core/CL/CLValidate.h"
+#include "src/core/CPP/Validate.h"
 #include "src/core/helpers/AutoConfiguration.h"
 #include "src/core/helpers/WindowHelpers.h"
 #include "support/StringSupport.h"
@@ -47,9 +48,12 @@ Status validate_arguments(const ITensorInfo              *boxes,
                           const BoundingBoxTransformInfo &info)
 {
     ARM_COMPUTE_RETURN_ERROR_ON_NULLPTR(boxes, pred_boxes, deltas);
+    ARM_COMPUTE_RETURN_ERROR_ON_SIZE_UNSUPPORTED(boxes, deltas);
     ARM_COMPUTE_RETURN_ERROR_ON_F16_UNSUPPORTED(boxes);
-    ARM_COMPUTE_RETURN_ERROR_ON_DATA_TYPE_NOT_IN(boxes, DataType::QASYMM16, DataType::F32, DataType::F16);
-    ARM_COMPUTE_RETURN_ERROR_ON_DATA_TYPE_NOT_IN(deltas, DataType::QASYMM8, DataType::F32, DataType::F16);
+    ARM_COMPUTE_RETURN_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(boxes, ITensorInfo::one_channel, DataType::QASYMM16,
+                                                         DataType::F32, DataType::F16);
+    ARM_COMPUTE_RETURN_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(deltas, ITensorInfo::one_channel, DataType::QASYMM8,
+                                                         DataType::F32, DataType::F16);
     ARM_COMPUTE_RETURN_ERROR_ON(deltas->tensor_shape()[1] != boxes->tensor_shape()[1]);
     ARM_COMPUTE_RETURN_ERROR_ON(deltas->tensor_shape()[0] % 4 != 0);
     ARM_COMPUTE_RETURN_ERROR_ON(boxes->tensor_shape()[0] != 4);
@@ -62,7 +66,7 @@ Status validate_arguments(const ITensorInfo              *boxes,
         const UniformQuantizationInfo boxes_qinfo = boxes->quantization_info().uniform();
         ARM_COMPUTE_RETURN_ERROR_ON(boxes_qinfo.scale != 0.125f);
         ARM_COMPUTE_RETURN_ERROR_ON(boxes_qinfo.offset != 0);
-        ARM_COMPUTE_RETURN_ERROR_ON_DATA_TYPE_NOT_IN(deltas, DataType::QASYMM8);
+        ARM_COMPUTE_RETURN_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(deltas, ITensorInfo::one_channel, DataType::QASYMM8);
     }
     else
     {
@@ -71,6 +75,7 @@ Status validate_arguments(const ITensorInfo              *boxes,
 
     if (pred_boxes->total_size() > 0)
     {
+        ARM_COMPUTE_RETURN_ERROR_ON_SIZE_UNSUPPORTED(pred_boxes);
         ARM_COMPUTE_RETURN_ERROR_ON_MISMATCHING_DIMENSIONS(pred_boxes->tensor_shape(), deltas->tensor_shape());
         ARM_COMPUTE_RETURN_ERROR_ON_MISMATCHING_DATA_TYPES(pred_boxes, boxes);
         ARM_COMPUTE_RETURN_ERROR_ON(pred_boxes->num_dimensions() > 2);
@@ -81,6 +86,11 @@ Status validate_arguments(const ITensorInfo              *boxes,
             ARM_COMPUTE_RETURN_ERROR_ON(pred_boxes_qinfo.offset != 0);
         }
     }
+    else
+    {
+        const auto pred_boxes_info = TensorInfo(deltas->tensor_shape(), ITensorInfo::one_channel, boxes->data_type());
+        ARM_COMPUTE_RETURN_ERROR_ON_SIZE_UNSUPPORTED(&pred_boxes_info);
+    }
     ARM_COMPUTE_RETURN_ERROR_ON(info.scale() <= 0);
 
     return Status{};

diff --git a/src/core/CL/kernels/CLChannelShuffleLayerKernel.cpp b/src/core/CL/kernels/CLChannelShuffleLayerKernel.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2018-2021, 2023 Arm Limited.
+ * Copyright (c) 2018-2021, 2023, 2026 Arm Limited.
  *
  * SPDX-License-Identifier: MIT
  *
@@ -33,6 +33,7 @@
 #include "arm_compute/core/utils/StringUtils.h"
 
 #include "src/core/CL/CLValidate.h"
+#include "src/core/CPP/Validate.h"
 #include "src/core/helpers/AutoConfiguration.h"
 #include "src/core/helpers/WindowHelpers.h"
 #include "support/StringSupport.h"
@@ -43,6 +44,8 @@ namespace
 {
 Status validate_arguments(const ITensorInfo *input, const ITensorInfo *output, unsigned int num_groups)
 {
+    ARM_COMPUTE_RETURN_ERROR_ON_NULLPTR(input, output);
+    ARM_COMPUTE_RETURN_ERROR_ON_SIZE_UNSUPPORTED(input);
     ARM_COMPUTE_RETURN_ERROR_ON_F16_UNSUPPORTED(input);
     ARM_COMPUTE_RETURN_ERROR_ON(input->data_type() == DataType::UNKNOWN);
     ARM_COMPUTE_RETURN_ERROR_ON_MSG(num_groups < 2, "Channel shuffling with less than 2 groups would be inefficient");
@@ -61,10 +64,16 @@ Status validate_arguments(const ITensorInfo *input, const ITensorInfo *output, u
     // Checks performed when output is configured
     if (output->total_size() != 0)
     {
+        ARM_COMPUTE_RETURN_ERROR_ON_SIZE_UNSUPPORTED(output);
         ARM_COMPUTE_RETURN_ERROR_ON_MISMATCHING_SHAPES(input, output);
         ARM_COMPUTE_RETURN_ERROR_ON_MISMATCHING_QUANTIZATION_INFO(input, output);
         ARM_COMPUTE_RETURN_ERROR_ON_MISMATCHING_DATA_TYPES(input, output);
     }
+    else
+    {
+        // No configured output. Since `output` is expected to match `input`,
+        // there's nothing extra to check in this case.
+    }
 
     return Status{};
 }

diff --git a/src/core/CL/kernels/CLComparisonKernel.cpp b/src/core/CL/kernels/CLComparisonKernel.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2018-2021, 2023 Arm Limited.
+ * Copyright (c) 2018-2021, 2023, 2026 Arm Limited.
  *
  * SPDX-License-Identifier: MIT
  *
@@ -25,10 +25,12 @@
 
 #include "arm_compute/core/CL/CLHelpers.h"
 #include "arm_compute/core/CL/ICLTensor.h"
+#include "arm_compute/core/TensorInfo.h"
 #include "arm_compute/core/utils/helpers/AdjustVecSize.h"
 #include "arm_compute/core/utils/StringUtils.h"
 
 #include "src/core/CL/CLValidate.h"
+#include "src/core/CPP/Validate.h"
 #include "src/core/helpers/AutoConfiguration.h"
 #include "src/core/helpers/WindowHelpers.h"
 #include "support/StringSupport.h"
@@ -51,6 +53,7 @@ Status validate_arguments(const ITensorInfo  &input1,
                           const ITensorInfo  &output,
                           ComparisonOperation operation)
 {
+    ARM_COMPUTE_RETURN_ERROR_ON_SIZE_UNSUPPORTED(&input1, &input2);
     ARM_COMPUTE_RETURN_ERROR_ON_F16_UNSUPPORTED(&input1);
     ARM_COMPUTE_RETURN_ERROR_ON(input1.data_type() == DataType::UNKNOWN);
     ARM_COMPUTE_RETURN_ERROR_ON_MISMATCHING_DATA_TYPES(&input1, &input2);
@@ -62,10 +65,16 @@ Status validate_arguments(const ITensorInfo  &input1,
     // Validate in case of configured output
     if (output.total_size() > 0)
     {
-        ARM_COMPUTE_RETURN_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(&output, 1, DataType::U8);
+        ARM_COMPUTE_RETURN_ERROR_ON_SIZE_UNSUPPORTED(&output);
+        ARM_COMPUTE_RETURN_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(&output, ITensorInfo::one_channel, DataType::U8);
         ARM_COMPUTE_RETURN_ERROR_ON_MSG(detail::have_different_dimensions(out_shape, output.tensor_shape(), 0),
                                         "Wrong shape for output");
     }
+    else
+    {
+        const auto output_info = TensorInfo(out_shape, ITensorInfo::one_channel, DataType::U8);
+        ARM_COMPUTE_RETURN_ERROR_ON_SIZE_UNSUPPORTED(&output_info);
+    }
 
     return Status{};
 }