Cycles: CPU implementation of split kernel

intern/cycles/kernel/kernels/cpu/kernel_split_avx2.cpp

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+/*
+ * Copyright 2011-2014 Blender Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/* Optimized CPU kernel entry points. This file is compiled with AVX2
+ * optimization flags and nearly all functions inlined, while kernel.cpp
+ * is compiled without for other CPU's. */
+
+/* SSE optimization disabled for now on 32 bit, see bug #36316 */
+#if !(defined(__GNUC__) && (defined(i386) || defined(_M_IX86)))
+#  define __KERNEL_SSE__
+#  define __KERNEL_SSE2__
+#  define __KERNEL_SSE3__
+#  define __KERNEL_SSSE3__
+#  define __KERNEL_SSE41__
+#  define __KERNEL_AVX__
+#  define __KERNEL_AVX2__
+#endif
+
+#define __SPLIT_KERNEL__
+
+#include "util_optimization.h"
+
+#ifdef WITH_CYCLES_OPTIMIZED_KERNEL_AVX2
+#  include "kernel.h"
+#  define KERNEL_ARCH cpu_avx2
+#  include "kernel_cpu_impl.h"
+#endif  /* WITH_CYCLES_OPTIMIZED_KERNEL_AVX2 */