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[bytom/vapor.git] / vendor / golang.org / x / crypto / blake2b / blake2bAVX2_amd64.go

diff --git a/vendor/golang.org/x/crypto/blake2b/blake2bAVX2_amd64.go b/vendor/golang.org/x/crypto/blake2b/blake2bAVX2_amd64.go
new file mode 100644 (file)
index 0000000..8c41cf6
--- /dev/null
+++ b/vendor/golang.org/x/crypto/blake2b/blake2bAVX2_amd64.go
@@ -0,0 +1,43 @@
+// Copyright 2016 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.
+
+// +build go1.7,amd64,!gccgo,!appengine
+
+package blake2b
+
+func init() {
+       useAVX2 = supportsAVX2()
+       useAVX = supportsAVX()
+       useSSE4 = supportsSSE4()
+}
+
+//go:noescape
+func supportsSSE4() bool
+
+//go:noescape
+func supportsAVX() bool
+
+//go:noescape
+func supportsAVX2() bool
+
+//go:noescape
+func hashBlocksAVX2(h *[8]uint64, c *[2]uint64, flag uint64, blocks []byte)
+
+//go:noescape
+func hashBlocksAVX(h *[8]uint64, c *[2]uint64, flag uint64, blocks []byte)
+
+//go:noescape
+func hashBlocksSSE4(h *[8]uint64, c *[2]uint64, flag uint64, blocks []byte)
+
+func hashBlocks(h *[8]uint64, c *[2]uint64, flag uint64, blocks []byte) {
+       if useAVX2 {
+               hashBlocksAVX2(h, c, flag, blocks)
+       } else if useAVX {
+               hashBlocksAVX(h, c, flag, blocks)
+       } else if useSSE4 {
+               hashBlocksSSE4(h, c, flag, blocks)
+       } else {
+               hashBlocksGeneric(h, c, flag, blocks)
+       }
+}