go1.16 (#14783)

vendor/github.com/klauspost/cpuid/v2/os_darwin_arm64.go

@@ -0,0 +1,15 @@
+// Copyright (c) 2020 Klaus Post, released under MIT License. See LICENSE file.
+
+package cpuid
+
+import "runtime"
+
+func detectOS(c *CPUInfo) bool {
+	// There are no hw.optional sysctl values for the below features on Mac OS 11.0
+	// to detect their supported state dynamically. Assume the CPU features that
+	// Apple Silicon M1 supports to be available as a minimal set of features
+	// to all Go programs running on darwin/arm64.
+	// TODO: Add more if we know them.
+	c.featureSet.setIf(runtime.GOOS != "ios", AESARM, PMULL, SHA1, SHA2)
+	return true
+}