1 files changed, 38 insertions, 0 deletions
diff --git a/intern/cycles/cmake/msvc_arch_flags.c b/intern/cycles/cmake/msvc_arch_flags.c
new file mode 100644
index 00000000000..79dbd3b87ac
--- /dev/null
+++ b/intern/cycles/cmake/msvc_arch_flags.c
@@ -0,0 +1,38 @@
+/*
+ * Copyright 2011-2020 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.
+ */
+
+#include <stdio.h>
+#include <isa_availability.h>
+
+/* The MS CRT defines this */
+extern int __isa_available;
+
+const char* get_arch_flags()
+{
+	if (__isa_available >= __ISA_AVAILABLE_AVX2) {
+    return "/arch:AVX2";
+  }
+	if (__isa_available >= __ISA_AVAILABLE_AVX) {
+    return "/arch:AVX";
+  }
+	return "";
+}
+
+int main()
+{
+    printf("%s\n", get_arch_flags());
+    return 0;
+}