1 files changed, 14 insertions, 0 deletions
diff --git a/src/runtime/asm_amd64.h b/src/runtime/asm_amd64.h
new file mode 100644
index 0000000..49e0ee2
--- /dev/null
+++ b/src/runtime/asm_amd64.h
@@ -0,0 +1,14 @@
+// Copyright 2021 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Define features that are guaranteed to be supported by setting the AMD64 variable.
+// If a feature is supported, there's no need to check it at runtime every time.
+
+#ifdef GOAMD64_v3
+#define hasAVX2
+#endif
+
+#ifdef GOAMD64_v4
+#define hasAVX2
+#endif