Add Chromium-only Blender WebEngine parity work

blender-5.2.0/intern/cycles/util/optimization.h

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+/* SPDX-FileCopyrightText: 2011-2022 Blender Foundation
+ *
+ * SPDX-License-Identifier: Apache-2.0 */
+
+#pragma once
+
+#ifndef __KERNEL_GPU__
+
+/* x86
+ *
+ * Compile a regular kernel. */
+
+#  if defined(i386) || defined(_M_IX86)
+
+/* x86-64
+ *
+ * Compile a regular (includes SSE4.2) and AVX2 kernel. */
+
+#  elif defined(__x86_64__) || defined(_M_X64)
+
+/* SSE4.2 is our minimum requirement for x86-64 CPUs, so auto enable */
+#    define __KERNEL_SSE__
+#    define __KERNEL_SSE2__
+#    define __KERNEL_SSE3__
+#    define __KERNEL_SSE42__
+/* no SSE4.2 kernel on x86-64, part of regular kernel */
+#    ifdef WITH_KERNEL_AVX2
+#      define WITH_CYCLES_OPTIMIZED_KERNEL_AVX2
+#    endif
+
+/* Arm Neon
+ *
+ * Compile a SSE4 kernel emulated with Neon. Most code is shared with
+ * SSE, some specializations for performance and compatibility are made
+ * made testing for __KERNEL_NEON__. */
+
+#  elif (defined(__ARM_NEON) || defined(_M_ARM64)) && defined(WITH_SSE2NEON)
+
+#    define __KERNEL_NEON__
+#    define __KERNEL_SSE__
+#    define __KERNEL_SSE2__
+#    define __KERNEL_SSE3__
+#    define __KERNEL_SSE42__
+
+#  endif
+
+#endif