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diff --git a/vendor/github.com/minio/blake2b-simd/cpuid_amd64.s b/vendor/github.com/minio/blake2b-simd/cpuid_amd64.s
new file mode 100644
index 00000000..fb45a656
--- /dev/null
+++ b/vendor/github.com/minio/blake2b-simd/cpuid_amd64.s
@@ -0,0 +1,34 @@
+// Copyright (c) 2015 Klaus Post, released under MIT License. See LICENSE file.
+
+// +build amd64,!gccgo
+
+// func cpuid(op uint32) (eax, ebx, ecx, edx uint32)
+TEXT ·cpuid(SB), 7, $0
+        XORQ CX, CX
+        MOVL op+0(FP), AX
+        CPUID
+        MOVL AX, eax+8(FP)
+        MOVL BX, ebx+12(FP)
+        MOVL CX, ecx+16(FP)
+        MOVL DX, edx+20(FP)
+        RET
+
+
+// func cpuidex(op, op2 uint32) (eax, ebx, ecx, edx uint32)
+TEXT ·cpuidex(SB), 7, $0
+        MOVL op+0(FP), AX
+        MOVL op2+4(FP), CX
+        CPUID
+        MOVL AX, eax+8(FP)
+        MOVL BX, ebx+12(FP)
+        MOVL CX, ecx+16(FP)
+        MOVL DX, edx+20(FP)
+        RET
+
+// func xgetbv(index uint32) (eax, edx uint32)
+TEXT ·xgetbv(SB), 7, $0
+        MOVL index+0(FP), CX
+        BYTE $0x0f; BYTE $0x01; BYTE $0xd0 // XGETBV
+        MOVL AX, eax+8(FP)
+        MOVL DX, edx+12(FP)
+        RET