COMPMID-3279: Create CLCompiler interface

Change-Id: Ic9dd5288d72a690651aa03d474f2bfd6e1ebe8b2
Signed-off-by: Michalis Spyrou <michalis.spyrou@arm.com>
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/2957
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Georgios Pinitas <georgios.pinitas@arm.com>
Reviewed-by: Gian Marco Iodice <gianmarco.iodice@arm.com>

4 files changed, 434 insertions, 287 deletions

diff --git a/src/core/CL/CLCompileContext.cpp b/src/core/CL/CLCompileContext.cpp
new file mode 100644
index 0000000000..48cc64c387
--- /dev/null
+++ b/src/core/CL/CLCompileContext.cpp
@@ -0,0 +1,369 @@
+/*
+ * Copyright (c) 2020 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.
+ */
+#include "arm_compute/core/CL/CLCompileContext.h"
+#include "arm_compute/core/CL/OpenCL.h"
+
+#include "arm_compute/core/CL/CLHelpers.h"
+#include "arm_compute/core/Error.h"
+#include "arm_compute/core/Utils.h"
+#include "support/StringSupport.h"
+
+namespace arm_compute
+{
+CLBuildOptions::CLBuildOptions()
+    : _build_opts()
+{
+}
+
+void CLBuildOptions::add_option(std::string option)
+{
+    _build_opts.emplace(std::move(option));
+}
+
+void CLBuildOptions::add_option_if(bool cond, std::string option)
+{
+    if(cond)
+    {
+        add_option(std::move(option));
+    }
+}
+
+void CLBuildOptions::add_option_if_else(bool cond, std::string option_true, std::string option_false)
+{
+    (cond) ? add_option(std::move(option_true)) : add_option(std::move(option_false));
+}
+
+void CLBuildOptions::add_options(const StringSet &options)
+{
+    _build_opts.insert(options.begin(), options.end());
+}
+
+void CLBuildOptions::add_options_if(bool cond, const StringSet &options)
+{
+    if(cond)
+    {
+        add_options(options);
+    }
+}
+
+const CLBuildOptions::StringSet &CLBuildOptions::options() const
+{
+    return _build_opts;
+}
+
+Program::Program()
+    : _context(), _device(), _is_binary(false), _name(), _source(), _binary()
+{
+}
+
+Program::Program(cl::Context context, std::string name, std::string source)
+    : _context(std::move(context)), _device(), _is_binary(false), _name(std::move(name)), _source(std::move(source)), _binary()
+{
+}
+
+Program::Program(cl::Context context, cl::Device device, std::string name, std::vector<unsigned char> binary)
+    : _context(std::move(context)), _device(std::move(device)), _is_binary(true), _name(std::move(name)), _source(), _binary(std::move(binary))
+{
+}
+
+Program::operator cl::Program() const
+{
+    if(_is_binary)
+    {
+        return cl::Program(_context, { _device }, { _binary });
+    }
+    else
+    {
+        return cl::Program(_context, _source, false);
+    }
+}
+
+bool Program::build(const cl::Program &program, const std::string &build_options)
+{
+    try
+    {
+        return program.build(build_options.c_str()) == CL_SUCCESS;
+    }
+    catch(const cl::Error &e)
+    {
+        cl_int     err        = CL_SUCCESS;
+        const auto build_info = program.getBuildInfo<CL_PROGRAM_BUILD_LOG>(&err);
+
+        for(auto &pair : build_info)
+        {
+            std::cerr << pair.second << std::endl;
+        }
+
+        return false;
+    }
+}
+
+cl::Program Program::build(const std::string &build_options) const
+{
+    cl::Program cl_program = static_cast<cl::Program>(*this);
+    build(cl_program, build_options);
+    return cl_program;
+}
+
+Kernel::Kernel()
+    : _name(), _kernel()
+{
+}
+
+Kernel::Kernel(std::string name, const cl::Program &program)
+    : _name(std::move(name)),
+      _kernel(cl::Kernel(program, _name.c_str()))
+{
+}
+CLCompileContext::CLCompileContext()
+    : _context(), _device(), _programs_map(), _built_programs_map()
+{
+}
+
+CLCompileContext::CLCompileContext(cl::Context context, const cl::Device &device)
+    : _context(), _device(), _programs_map(), _built_programs_map()
+{
+    _context = std::move(context);
+    _device  = CLDevice(device);
+}
+
+Kernel CLCompileContext::create_kernel(const std::string &kernel_name, const std::string &program_name, const std::string &program_source,
+                                       const std::string &kernel_path, const StringSet &build_options_set, bool is_binary) const
+{
+    const std::string build_options      = generate_build_options(build_options_set, kernel_path);
+    const std::string built_program_name = program_name + "_" + build_options;
+    auto              built_program_it   = _built_programs_map.find(built_program_name);
+    cl::Program       cl_program;
+
+    if(_built_programs_map.end() != built_program_it)
+    {
+        // If program has been built, retrieve to create kernel from it
+        cl_program = built_program_it->second;
+    }
+    else
+    {
+        Program program = load_program(program_name, program_source, is_binary);
+
+        // Build program
+        cl_program = program.build(build_options);
+
+        // Add built program to internal map
+        _built_programs_map.emplace(program_name, cl_program);
+    }
+
+    // Create and return kernel
+    return Kernel(kernel_name, cl_program);
+}
+
+const Program &CLCompileContext::load_program(const std::string &program_name, const std::string &program_source, bool is_binary) const
+{
+    const auto program_it = _programs_map.find(program_name);
+
+    if(program_it != _programs_map.end())
+    {
+        return program_it->second;
+    }
+
+    Program program;
+
+#ifdef EMBEDDED_KERNELS
+    ARM_COMPUTE_UNUSED(is_binary);
+    program = Program(_context, program_name, program_source);
+#else  /* EMBEDDED_KERNELS */
+    if(is_binary)
+    {
+        program = Program(_context, _device.cl_device(), program_name, std::vector<unsigned char>(program_source.begin(), program_source.end()));
+    }
+    else
+    {
+        program = Program(_context, program_name, program_source);
+    }
+#endif /* EMBEDDED_KERNELS */
+
+    // Insert program to program map
+    const auto new_program = _programs_map.emplace(program_name, std::move(program));
+
+    return new_program.first->second;
+}
+
+void CLCompileContext::set_context(cl::Context context)
+{
+    _context = std::move(context);
+    if(_context.get() != nullptr)
+    {
+        const auto cl_devices = _context.getInfo<CL_CONTEXT_DEVICES>();
+
+        if(!cl_devices.empty())
+        {
+            _device = CLDevice(cl_devices[0]);
+        }
+    }
+}
+
+std::string CLCompileContext::generate_build_options(const StringSet &build_options_set, const std::string &kernel_path) const
+{
+    std::string concat_str;
+
+#if defined(ARM_COMPUTE_DEBUG_ENABLED)
+    // Enable debug properties in CL kernels
+    concat_str += " -DARM_COMPUTE_DEBUG_ENABLED";
+#endif // defined(ARM_COMPUTE_DEBUG_ENABLED)
+
+    GPUTarget gpu_arch = get_arch_from_target(_device.target());
+    concat_str += " -DGPU_ARCH=" + support::cpp11::to_string(
+                      static_cast<std::underlying_type<GPUTarget>::type>(gpu_arch));
+
+    if(_device.supported("cl_khr_fp16"))
+    {
+        concat_str += " -DARM_COMPUTE_OPENCL_FP16_ENABLED=1 ";
+    }
+
+    if(_device.supported("cl_arm_integer_dot_product_int8"))
+    {
+        concat_str += " -DARM_COMPUTE_OPENCL_DOT8_ENABLED=1 ";
+    }
+
+    if(_device.supported("cl_arm_integer_dot_product_accumulate_int8"))
+    {
+        concat_str += " -DARM_COMPUTE_OPENCL_DOT8_ACC_ENABLED=1 ";
+    }
+
+    if(_device.version() == CLVersion::CL20)
+    {
+        concat_str += " -cl-std=CL2.0 ";
+    }
+    else if(_device.supported("cl_arm_non_uniform_work_group_size"))
+    {
+        concat_str += " -cl-arm-non-uniform-work-group-size ";
+    }
+    else
+    {
+        ARM_COMPUTE_ERROR("Non uniform workgroup size is not supported!!");
+    }
+
+    std::string build_options = stringify_set(build_options_set, kernel_path) + concat_str;
+
+    return build_options;
+}
+
+bool CLCompileContext::fp16_supported() const
+{
+    return _device.supported("cl_khr_fp16");
+}
+
+std::string CLCompileContext::stringify_set(const StringSet &s, const std::string &kernel_path) const
+{
+    std::string concat_set;
+#ifndef EMBEDDED_KERNELS
+    concat_set += "-I" + kernel_path + " ";
+#else  /* EMBEDDED_KERNELS */
+    ARM_COMPUTE_UNUSED(kernel_path);
+#endif /* EMBEDDED_KERNELS */
+
+    // Concatenate set
+    for(const auto &el : s)
+    {
+        concat_set += " " + el;
+    }
+
+    return concat_set;
+}
+
+void CLCompileContext::add_built_program(const std::string &built_program_name, const cl::Program &program) const
+{
+    _built_programs_map.emplace(built_program_name, program);
+}
+
+void CLCompileContext::clear_programs_cache()
+{
+    _programs_map.clear();
+    _built_programs_map.clear();
+}
+
+const std::map<std::string, cl::Program> &CLCompileContext::get_built_programs() const
+{
+    return _built_programs_map;
+}
+
+cl::Context &CLCompileContext::context()
+{
+    return _context;
+}
+
+const cl::Device &CLCompileContext::get_device() const
+{
+    return _device.cl_device();
+}
+
+void CLCompileContext::set_device(cl::Device device)
+{
+    _device = std::move(device);
+}
+
+cl::NDRange CLCompileContext::default_ndrange() const
+{
+    GPUTarget   _target = get_target_from_device(_device.cl_device());
+    cl::NDRange default_range;
+
+    switch(_target)
+    {
+        case GPUTarget::MIDGARD:
+        case GPUTarget::T600:
+        case GPUTarget::T700:
+        case GPUTarget::T800:
+            default_range = cl::NDRange(128u, 1);
+            break;
+        default:
+            default_range = cl::NullRange;
+    }
+
+    return default_range;
+}
+
+bool CLCompileContext::int64_base_atomics_supported() const
+{
+    return _device.supported("cl_khr_int64_base_atomics");
+}
+
+size_t CLCompileContext::max_local_workgroup_size(const cl::Kernel &kernel) const
+{
+    size_t result;
+
+    size_t err = kernel.getWorkGroupInfo(_device.cl_device(), CL_KERNEL_WORK_GROUP_SIZE, &result);
+    ARM_COMPUTE_ERROR_ON_MSG(err != 0, "clGetKernelWorkGroupInfo failed to return the maximum workgroup size for the kernel");
+    ARM_COMPUTE_UNUSED(err);
+
+    return result;
+}
+
+std::string CLCompileContext::get_device_version() const
+{
+    return _device.device_version();
+}
+
+cl_uint CLCompileContext::get_num_compute_units() const
+{
+    return _device.compute_units();
+}
+} // namespace arm_compute
diff --git a/src/core/CL/CLHelpers.cpp b/src/core/CL/CLHelpers.cpp
index 84de380cc9..7d1b0ea6c7 100644
--- a/src/core/CL/CLHelpers.cpp
+++ b/src/core/CL/CLHelpers.cpp
@@ -384,6 +384,14 @@ cl::Kernel create_opencl_kernel(CLCoreRuntimeContext *ctx, const std::string &ke
     }
 }
 
+cl::Kernel create_kernel(CLCompileContext &ctx, const std::string &kernel_name, const std::set<std::string> &build_opts)
+{
+    const std::string program_name = CLKernelLibrary::get().get_program_name(kernel_name);
+    std::pair<std::string, bool> kernel_src = CLKernelLibrary::get().get_program(program_name);
+    const std::string kernel_path = CLKernelLibrary::get().get_kernel_path();
+    return static_cast<cl::Kernel>(ctx.create_kernel(kernel_name, program_name, kernel_src.first, kernel_path, build_opts, kernel_src.second));
+}
+
 cl::NDRange create_lws_hint_parallel_implementations(unsigned int input_dimension, unsigned int vector_size)
 {
     const unsigned int width_leftover = input_dimension % vector_size;
diff --git a/src/core/CL/CLKernelLibrary.cpp b/src/core/CL/CLKernelLibrary.cpp
index c6c88569ce..7437f1bf22 100644
--- a/src/core/CL/CLKernelLibrary.cpp
+++ b/src/core/CL/CLKernelLibrary.cpp
@@ -35,113 +35,6 @@
 #include <vector>
 
 using namespace arm_compute;
-
-CLBuildOptions::CLBuildOptions()
-    : _build_opts()
-{
-}
-
-void CLBuildOptions::add_option(std::string option)
-{
-    _build_opts.emplace(std::move(option));
-}
-
-void CLBuildOptions::add_option_if(bool cond, std::string option)
-{
-    if(cond)
-    {
-        add_option(std::move(option));
-    }
-}
-
-void CLBuildOptions::add_option_if_else(bool cond, std::string option_true, std::string option_false)
-{
-    (cond) ? add_option(std::move(option_true)) : add_option(std::move(option_false));
-}
-
-void CLBuildOptions::add_options(const StringSet &options)
-{
-    _build_opts.insert(options.begin(), options.end());
-}
-
-void CLBuildOptions::add_options_if(bool cond, const StringSet &options)
-{
-    if(cond)
-    {
-        add_options(options);
-    }
-}
-
-const CLBuildOptions::StringSet &CLBuildOptions::options() const
-{
-    return _build_opts;
-}
-
-Program::Program()
-    : _context(), _device(), _is_binary(false), _name(), _source(), _binary()
-{
-}
-
-Program::Program(cl::Context context, std::string name, std::string source)
-    : _context(std::move(context)), _device(), _is_binary(false), _name(std::move(name)), _source(std::move(source)), _binary()
-{
-}
-
-Program::Program(cl::Context context, cl::Device device, std::string name, std::vector<unsigned char> binary)
-    : _context(std::move(context)), _device(std::move(device)), _is_binary(true), _name(std::move(name)), _source(), _binary(std::move(binary))
-{
-}
-
-Program::operator cl::Program() const
-{
-    if(_is_binary)
-    {
-        return cl::Program(_context, { _device }, { _binary });
-    }
-    else
-    {
-        return cl::Program(_context, _source, false);
-    }
-}
-
-bool Program::build(const cl::Program &program, const std::string &build_options)
-{
-    try
-    {
-        return program.build(build_options.c_str()) == CL_SUCCESS;
-    }
-    catch(const cl::Error &e)
-    {
-        cl_int     err        = CL_SUCCESS;
-        const auto build_info = program.getBuildInfo<CL_PROGRAM_BUILD_LOG>(&err);
-
-        for(auto &pair : build_info)
-        {
-            std::cerr << pair.second << std::endl;
-        }
-
-        return false;
-    }
-}
-
-cl::Program Program::build(const std::string &build_options) const
-{
-    cl::Program cl_program = static_cast<cl::Program>(*this);
-    build(cl_program, build_options);
-    return cl_program;
-}
-
-Kernel::Kernel()
-    : _name(), _kernel()
-{
-}
-
-Kernel::Kernel(std::string name, const cl::Program &program)
-    : _name(std::move(name)),
-      _kernel(cl::Kernel(program, _name.c_str()))
-{
-}
-
 const std::map<std::string, std::string> CLKernelLibrary::_kernel_program_map =
 {
     { "absdiff", "absdiff.cl" },
@@ -1066,7 +959,7 @@ const std::map<std::string, std::string> CLKernelLibrary::_program_source_map =
 };
 
 CLKernelLibrary::CLKernelLibrary()
-    : _context(), _device(), _kernel_path("."), _programs_map(), _built_programs_map()
+    : _compile_context(), _kernel_path()
 {
     opencl_is_available(); // Make sure the OpenCL symbols are initialised *before* the CLKernelLibrary is built
 }
@@ -1077,7 +970,15 @@ CLKernelLibrary &CLKernelLibrary::get()
     return _kernel_library;
 }
 
-Kernel CLKernelLibrary::create_kernel(const std::string &kernel_name, const StringSet &build_options_set) const
+Kernel CLKernelLibrary::create_kernel(const std::string &kernel_name, const std::set<std::string> &build_options_set) const
+{
+    const std::string program_name = get_program_name(kernel_name);
+    auto              program      = get_program(program_name);
+
+    return _compile_context.create_kernel(kernel_name, program_name, program.first, _kernel_path, build_options_set, program.second);
+}
+
+std::string CLKernelLibrary::get_program_name(const std::string &kernel_name) const
 {
     // Find which program contains the kernel
     auto kernel_program_it = _kernel_program_map.find(kernel_name);
@@ -1086,99 +987,41 @@ Kernel CLKernelLibrary::create_kernel(const std::string &kernel_name, const Stri
     {
         ARM_COMPUTE_ERROR_VAR("Kernel %s not found in the CLKernelLibrary", kernel_name.c_str());
     }
-    std::string concat_str;
-
-#if defined(ARM_COMPUTE_DEBUG_ENABLED)
-    // Enable debug properties in CL kernels
-    concat_str += " -DARM_COMPUTE_DEBUG_ENABLED";
-#endif // defined(ARM_COMPUTE_DEBUG_ENABLED)
 
-    GPUTarget gpu_arch = get_arch_from_target(get_target_from_device(_device));
-    concat_str += " -DGPU_ARCH=" + support::cpp11::to_string(
-                      static_cast<std::underlying_type<GPUTarget>::type>(gpu_arch));
-    if(fp16_supported())
-    {
-        concat_str += " -DARM_COMPUTE_OPENCL_FP16_ENABLED=1 ";
-    }
+    const std::string program_name = kernel_program_it->second;
 
-    if(dot8_supported(_device))
-    {
-        concat_str += " -DARM_COMPUTE_OPENCL_DOT8_ENABLED=1 ";
-    }
-
-    if(dot8_acc_supported(_device))
-    {
-        concat_str += " -DARM_COMPUTE_OPENCL_DOT8_ACC_ENABLED=1 ";
-    }
-
-    if(get_cl_version(_device) == CLVersion::CL20)
-    {
-        concat_str += " -cl-std=CL2.0 ";
-    }
-    else if(arm_non_uniform_workgroup_supported(_device))
-    {
-        concat_str += " -cl-arm-non-uniform-work-group-size ";
-    }
-    else
-    {
-        ARM_COMPUTE_ERROR("Non uniform workgroup size is not supported!!");
-    }
-
-    // Check if the program has been built before with same build options.
-    const std::string program_name  = kernel_program_it->second;
-    const std::string build_options = stringify_set(build_options_set) + concat_str;
-
-    const std::string built_program_name = program_name + "_" + build_options;
-    auto              built_program_it   = _built_programs_map.find(built_program_name);
-
-    cl::Program cl_program;
-
-    if(_built_programs_map.end() != built_program_it)
-    {
-        // If program has been built, retrieve to create kernel from it
-        cl_program = built_program_it->second;
-    }
-    else
-    {
-        // Get program
-        Program program = load_program(program_name);
-
-        // Build program
-        cl_program = program.build(build_options);
-
-        // Add built program to internal map
-        _built_programs_map.emplace(built_program_name, cl_program);
-    }
-
-    // Create and return kernel
-    return Kernel(kernel_name, cl_program);
+    return program_name;
 }
 
 void CLKernelLibrary::init(std::string kernel_path, cl::Context context, cl::Device device)
 {
-    _kernel_path = std::move(kernel_path);
-    _context     = std::move(context);
-    _device      = std::move(device);
+    _compile_context = CLCompileContext(context, device);
+    _kernel_path     = kernel_path;
 }
 
 void CLKernelLibrary::set_kernel_path(const std::string &kernel_path)
 {
-    _kernel_path = kernel_path;
+    _kernel_path = std::move(kernel_path);
 }
 
 cl::Context &CLKernelLibrary::context()
 {
-    return _context;
+    return _compile_context.context();
 }
 
-cl::Device &CLKernelLibrary::get_device()
+const cl::Device &CLKernelLibrary::get_device()
 {
-    return _device;
+    return _compile_context.get_device();
 }
 
 void CLKernelLibrary::set_device(cl::Device device)
 {
-    _device = std::move(device);
+    _compile_context.set_device(device);
+}
+
+void CLKernelLibrary::set_context(cl::Context context)
+{
+    _compile_context.set_context(context);
 }
 
 std::string CLKernelLibrary::get_kernel_path()
@@ -1188,164 +1031,86 @@ std::string CLKernelLibrary::get_kernel_path()
 
 void CLKernelLibrary::clear_programs_cache()
 {
-    _programs_map.clear();
-    _built_programs_map.clear();
+    _compile_context.clear_programs_cache();
 }
 
 const std::map<std::string, cl::Program> &CLKernelLibrary::get_built_programs() const
 {
-    return _built_programs_map;
+    return _compile_context.get_built_programs();
 }
 
 void CLKernelLibrary::add_built_program(const std::string &built_program_name, const cl::Program &program)
 {
-    _built_programs_map.emplace(built_program_name, program);
+    _compile_context.add_built_program(built_program_name, program);
 }
 
 bool CLKernelLibrary::fp16_supported() const
 {
-    return ::fp16_supported(_device);
+    return _compile_context.fp16_supported();
 }
 
 bool CLKernelLibrary::int64_base_atomics_supported() const
 {
-    return device_supports_extension(_device, "cl_khr_int64_base_atomics");
+    return _compile_context.int64_base_atomics_supported();
 }
 
-const Program &CLKernelLibrary::load_program(const std::string &program_name) const
+std::pair<std::string, bool> CLKernelLibrary::get_program(const std::string &program_name) const
 {
-    const auto program_it = _programs_map.find(program_name);
-
-    if(program_it != _programs_map.end())
-    {
-        return program_it->second;
-    }
-
-    Program program;
-
 #ifdef EMBEDDED_KERNELS
     const auto program_source_it = _program_source_map.find(program_name);
 
-    if(_program_source_map.end() == program_source_it)
+    if(program_source_it == _program_source_map.end())
     {
         ARM_COMPUTE_ERROR_VAR("Embedded program for %s does not exist.", program_name.c_str());
     }
 
-    program = Program(_context, program_name, program_source_it->second);
+    return std::make_pair(program_source_it->second, false);
 #else  /* EMBEDDED_KERNELS */
     // Check for binary
     std::string source_name = _kernel_path + program_name;
     std::string binary_name = source_name + "bin";
+    std::string program_source{};
+    bool        is_binary = false;
 
     if(std::ifstream(binary_name).is_open())
     {
-        const std::string program_binary = read_file(binary_name, true);
-        program                          = Program(_context, _device, program_name, std::vector<unsigned char>(program_binary.begin(), program_binary.end()));
+        program_source = read_file(binary_name, true);
+        is_binary      = true;
     }
     else if(std::ifstream(source_name).is_open())
     {
-        program = Program(_context, program_name, read_file(source_name, false));
+        program_source = read_file(source_name, false);
     }
     else
     {
         ARM_COMPUTE_ERROR_VAR("Kernel file %s does not exist.", source_name.c_str());
     }
-#endif /* EMBEDDED_KERNELS */
 
-    // Insert program to program map
-    const auto new_program = _programs_map.emplace(program_name, std::move(program));
-
-    return new_program.first->second;
-}
-
-void CLKernelLibrary::set_context(cl::Context context)
-{
-    _context = std::move(context);
-    if(_context.get() == nullptr)
-    {
-        _device = cl::Device();
-    }
-    else
-    {
-        const auto cl_devices = _context.getInfo<CL_CONTEXT_DEVICES>();
-
-        if(cl_devices.empty())
-        {
-            _device = cl::Device();
-        }
-        else
-        {
-            _device = cl_devices[0];
-        }
-    }
-}
-
-std::string CLKernelLibrary::stringify_set(const StringSet &s) const
-{
-    std::string concat_set;
-
-#ifndef EMBEDDED_KERNELS
-    concat_set += "-I" + _kernel_path + " ";
+    return std::make_pair(program_source, is_binary);
 #endif /* EMBEDDED_KERNELS */
-
-    // Concatenate set
-    for(const auto &el : s)
-    {
-        concat_set += " " + el;
-    }
-
-    return concat_set;
-}
-
-std::string CLKernelLibrary::get_program_source(const std::string &program_name)
-{
-    const auto program_source_it = _program_source_map.find(program_name);
-
-    if(program_source_it == _program_source_map.end())
-    {
-        ARM_COMPUTE_ERROR_VAR("Embedded program for %s does not exist.", program_name.c_str());
-    }
-
-    return program_source_it->second;
 }
 
 size_t CLKernelLibrary::max_local_workgroup_size(const cl::Kernel &kernel) const
 {
-    size_t result;
-
-    size_t err = kernel.getWorkGroupInfo(_device, CL_KERNEL_WORK_GROUP_SIZE, &result);
-    ARM_COMPUTE_ERROR_ON_MSG(err != 0, "clGetKernelWorkGroupInfo failed to return the maximum workgroup size for the kernel");
-    ARM_COMPUTE_UNUSED(err);
-
-    return result;
+    return _compile_context.max_local_workgroup_size(kernel);
 }
 
 cl::NDRange CLKernelLibrary::default_ndrange() const
 {
-    GPUTarget   _target = get_target_from_device(_device);
-    cl::NDRange default_range;
-
-    switch(_target)
-    {
-        case GPUTarget::MIDGARD:
-        case GPUTarget::T600:
-        case GPUTarget::T700:
-        case GPUTarget::T800:
-            default_range = cl::NDRange(128u, 1);
-            break;
-        default:
-            default_range = cl::NullRange;
-    }
-
-    return default_range;
+    return _compile_context.default_ndrange();
 }
 
 std::string CLKernelLibrary::get_device_version()
 {
-    return _device.getInfo<CL_DEVICE_VERSION>();
+    return _compile_context.get_device_version();
 }
 
 cl_uint CLKernelLibrary::get_num_compute_units()
 {
-    return _device.getInfo<CL_DEVICE_MAX_COMPUTE_UNITS>();
+    return _compile_context.get_num_compute_units();
+}
+
+CLCompileContext &CLKernelLibrary::get_compile_context()
+{
+    return _compile_context;
 }
diff --git a/src/core/CL/kernels/CLFloorKernel.cpp b/src/core/CL/kernels/CLFloorKernel.cpp
index 8f0043f08a..abfed8d18e 100644
--- a/src/core/CL/kernels/CLFloorKernel.cpp
+++ b/src/core/CL/kernels/CLFloorKernel.cpp
@@ -77,7 +77,7 @@ CLFloorKernel::CLFloorKernel()
 {
 }
 
-void CLFloorKernel::configure(const ICLTensor *input, ICLTensor *output)
+void CLFloorKernel::configure(CLCompileContext &compile_context, const ICLTensor *input, ICLTensor *output)
 {
     ARM_COMPUTE_ERROR_ON_NULLPTR(input, output);
 
@@ -90,13 +90,13 @@ void CLFloorKernel::configure(const ICLTensor *input, ICLTensor *output)
     _input  = input;
     _output = output;
 
-    const unsigned int num_elems_processed_per_iteration = 16 / input->info()->element_size();
-
-    // Create kernel
+    const unsigned int    num_elems_processed_per_iteration = 16 / input->info()->element_size();
     std::set<std::string> build_opts;
     build_opts.emplace(("-DDATA_TYPE=" + get_cl_type_from_data_type(input->info()->data_type())));
     build_opts.emplace(("-DVEC_SIZE=" + support::cpp11::to_string(num_elems_processed_per_iteration)));
-    _kernel = static_cast<cl::Kernel>(CLKernelLibrary::get().create_kernel("floor_layer", build_opts));
+
+    // Create kernel
+    _kernel = create_kernel(compile_context, "floor_layer", build_opts);
 
     // Configure kernel window
     auto win_config = validate_and_configure_window(input->info(), output->info());
@@ -104,6 +104,11 @@ void CLFloorKernel::configure(const ICLTensor *input, ICLTensor *output)
     ICLKernel::configure_internal(win_config.second);
 }
 
+void CLFloorKernel::configure(const ICLTensor *input, ICLTensor *output)
+{
+    configure(CLKernelLibrary::get().get_compile_context(), input, output);
+}
+
 Status CLFloorKernel::validate(const ITensorInfo *input, const ITensorInfo *output)
 {
     ARM_COMPUTE_RETURN_ON_ERROR(validate_arguments(input, output));