1 files changed, 25 insertions, 0 deletions
diff --git a/src/crypto/sha512/sha512block_amd64.go b/src/crypto/sha512/sha512block_amd64.go
new file mode 100644
index 0000000..8da3e14
--- /dev/null
+++ b/src/crypto/sha512/sha512block_amd64.go
@@ -0,0 +1,25 @@
+// Copyright 2013 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.
+
+//go:build amd64
+
+package sha512
+
+import "internal/cpu"
+
+//go:noescape
+func blockAVX2(dig *digest, p []byte)
+
+//go:noescape
+func blockAMD64(dig *digest, p []byte)
+
+var useAVX2 = cpu.X86.HasAVX2 && cpu.X86.HasBMI1 && cpu.X86.HasBMI2
+
+func block(dig *digest, p []byte) {
+	if useAVX2 {
+		blockAVX2(dig, p)
+	} else {
+		blockAMD64(dig, p)
+	}
+}