COMPMID-655 : Check FP16 is supported by the GPU

Change-Id: I507b04680a4e88426b682bd0be03bccb560ec78d
Reviewed-on: https://eu-gerrit-1.euhpc.arm.com/132589
Tested-by: Jenkins <bsgcomp@arm.com>
Reviewed-by: Anthony Barbier <anthony.barbier@arm.com>

3 files changed, 81 insertions, 0 deletions

diff --git a/arm_compute/core/CL/CLKernelLibrary.h b/arm_compute/core/CL/CLKernelLibrary.h
index f0dc0b24cf..97537c05d0 100644
--- a/arm_compute/core/CL/CLKernelLibrary.h
+++ b/arm_compute/core/CL/CLKernelLibrary.h
@@ -329,6 +329,12 @@ public:
      */
     void add_built_program(const std::string &built_program_name, cl::Program program);
 
+    /** Returns true if FP16 is supported by the CL device
+     *
+     * @return true if the CL device supports FP16
+     */
+    bool fp16_supported() const;
+
 private:
     /** Load program and its dependencies.
      *
diff --git a/arm_compute/core/CL/CLValidate.h b/arm_compute/core/CL/CLValidate.h
new file mode 100644
index 0000000000..6252f00d3e
--- /dev/null
+++ b/arm_compute/core/CL/CLValidate.h
@@ -0,0 +1,38 @@
+/*
+ * Copyright (c) 2018 ARM Limited.
+ *
+ * SPDX-License-Identifier: MIT
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+#ifndef __ARM_COMPUTE_CL_VALIDATE_H__
+#define __ARM_COMPUTE_CL_VALIDATE_H__
+
+#include "arm_compute/core/Validate.h"
+
+namespace arm_compute
+{
+#define ARM_COMPUTE_ERROR_ON_F16_UNSUPPORTED(tensor) \
+    ARM_COMPUTE_ERROR_THROW_ON(::arm_compute::error_on_unsupported_fp16(__func__, __FILE__, __LINE__, tensor, CLKernelLibrary::get().fp16_supported()))
+
+#define ARM_COMPUTE_RETURN_ERROR_ON_F16_UNSUPPORTED(tensor) \
+    ARM_COMPUTE_RETURN_ON_ERROR(::arm_compute::error_on_unsupported_fp16(__func__, __FILE__, __LINE__, tensor, CLKernelLibrary::get().fp16_supported()))
+
+} // namespace arm_compute
+#endif /* __ARM_COMPUTE_CL_VALIDATE_H__ */
diff --git a/arm_compute/core/Validate.h b/arm_compute/core/Validate.h
index d7a90480fc..4ef94f2c6d 100644
--- a/arm_compute/core/Validate.h
+++ b/arm_compute/core/Validate.h
@@ -804,6 +804,43 @@ inline arm_compute::Status error_on_data_type_channel_not_in(const char *functio
 #define ARM_COMPUTE_RETURN_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(t, c, ...) \
     ARM_COMPUTE_RETURN_ON_ERROR(::arm_compute::error_on_data_type_channel_not_in(__func__, __FILE__, __LINE__, t, c, __VA_ARGS__))
 
+/** Return an error if the data type of the passed tensor info is FP16 and FP16 extension is not supported by the device.
+ *
+ * @param[in] function          Function in which the error occurred.
+ * @param[in] file              Name of the file where the error occurred.
+ * @param[in] line              Line on which the error occurred.
+ * @param[in] tensor_info       Tensor info to validate.
+ * @param[in] is_fp16_supported Is fp16 supported by the device.
+ *
+ * @return Status
+ */
+inline arm_compute::Status error_on_unsupported_fp16(const char *function, const char *file, const int line,
+                                                     const ITensorInfo *tensor_info, bool is_fp16_supported)
+{
+    ARM_COMPUTE_RETURN_ERROR_ON_LOC(tensor_info == nullptr, function, file, line);
+    ARM_COMPUTE_RETURN_ERROR_ON_LOC_MSG((tensor_info->data_type() == DataType::F16 && !is_fp16_supported),
+                                        function, file, line, "FP16 not supported by the device");
+    return arm_compute::Status{};
+}
+
+/** Return an error if the data type of the passed tensor is FP16 and FP16 extension is not supported by the device.
+ *
+ * @param[in] function          Function in which the error occurred.
+ * @param[in] file              Name of the file where the error occurred.
+ * @param[in] line              Line on which the error occurred.
+ * @param[in] tensor            Tensor to validate.
+ * @param[in] is_fp16_supported Is fp16 supported by the device.
+ *
+ * @return Status
+ */
+inline arm_compute::Status error_on_unsupported_fp16(const char *function, const char *file, const int line,
+                                                     const ITensor *tensor, bool is_fp16_supported)
+{
+    ARM_COMPUTE_RETURN_ERROR_ON_LOC(tensor == nullptr, function, file, line);
+    ARM_COMPUTE_RETURN_ON_ERROR(::arm_compute::error_on_unsupported_fp16(function, file, line, tensor->info(), is_fp16_supported));
+    return arm_compute::Status{};
+}
+
 /** Return an error if the tensor is not 2D.
  *
  * @param[in] function Function in which the error occurred.