Add support for CLVK

This patch enables CLVK through the graph API and inside the
CLScheduler. By default the Native platform is selected.
Selecting CLVK can be done via --target=clvk.

Resolves COMPMID-4205 and COMPMID-4206

Change-Id: Ic60744980c6b8a60e776627ea677ed46be88f656
Signed-off-by: Michalis Spyrou <michalis.spyrou@arm.com>
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/5475
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Georgios Pinitas <georgios.pinitas@arm.com>

3 files changed, 17 insertions, 3 deletions

diff --git a/src/graph/GraphManager.cpp b/src/graph/GraphManager.cpp
index 9d53172dc8..ab7aac6230 100644
--- a/src/graph/GraphManager.cpp
+++ b/src/graph/GraphManager.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2018-2019 Arm Limited.
+ * Copyright (c) 2018-2021 Arm Limited.
  *
  * SPDX-License-Identifier: MIT
  *
@@ -57,6 +57,18 @@ void GraphManager::finalize_graph(Graph &graph, GraphContext &ctx, PassManager &
     // Force target to all graph construct
     // TODO (COMPMID-2014) : Support heterogeneous execution
     Target forced_target = target;
+
+    // In case CLVK is selected, use the CL backend and
+    // update config
+    if(target == Target::CLVK)
+    {
+        forced_target       = Target::CL;
+        GraphConfig config  = ctx.config();
+        config.backend_type = CLBackendType::Clvk;
+
+        ctx.set_config(config);
+    }
+
     if(!is_target_supported(target))
     {
         forced_target = get_default_target();
diff --git a/src/graph/TypeLoader.cpp b/src/graph/TypeLoader.cpp
index 8efd66f2c5..3c51289dba 100644
--- a/src/graph/TypeLoader.cpp
+++ b/src/graph/TypeLoader.cpp
@@ -59,6 +59,7 @@ Target target_from_name(const std::string &name)
     {
         { "neon", Target::NEON },
         { "cl", Target::CL },
+        { "clvk", Target::CLVK },
     };
 
 #ifndef ARM_COMPUTE_EXCEPTIONS_DISABLED
diff --git a/src/graph/backends/CL/CLDeviceBackend.cpp b/src/graph/backends/CL/CLDeviceBackend.cpp
index f8e22ca7a0..eafda98669 100644
--- a/src/graph/backends/CL/CLDeviceBackend.cpp
+++ b/src/graph/backends/CL/CLDeviceBackend.cpp
@@ -65,7 +65,7 @@ bool file_exists(const std::string &filename)
 static detail::BackendRegistrar<CLDeviceBackend> CLDeviceBackend_registrar(Target::CL);
 
 CLDeviceBackend::CLDeviceBackend()
-    : _context_count(0), _tuner(), _gemm_heuristics(), _allocator(nullptr), _tuner_file()
+    : _context_count(0), _tuner(), _gemm_heuristics(), _allocator(nullptr), _tuner_file(), _backend_type(CLBackendType::Native)
 {
 }
 
@@ -87,7 +87,7 @@ void CLDeviceBackend::set_kernel_tuning_mode(CLTunerMode tuning_mode)
 void CLDeviceBackend::initialize_backend()
 {
     // Setup Scheduler
-    CLScheduler::get().default_init(&_tuner, &_gemm_heuristics);
+    CLScheduler::get().default_init(&_tuner, &_gemm_heuristics, _backend_type);
     // Create allocator with new context
     _allocator = std::make_unique<CLBufferAllocator>(nullptr /* legacy path for CLCoreRuntimeContext */);
 }
@@ -108,6 +108,7 @@ void CLDeviceBackend::setup_backend_context(GraphContext &ctx)
     _context_count++;
     if(_context_count == 1)
     {
+        _backend_type = ctx.config().backend_type;
         initialize_backend();
     }