Merge pull request #6614 from jedisct1/aes-arm

std/crypto/aes: add AES hardware acceleration on aarch64

Author: andrewrk

lib/std/crypto/aes.zig

@@ -10,7 +10,15 @@ const builtin = std.builtin;
 
 const has_aesni = comptime std.Target.x86.featureSetHas(std.Target.current.cpu.features, .aes);
 const has_avx = comptime std.Target.x86.featureSetHas(std.Target.current.cpu.features, .avx);
-const impl = if (std.Target.current.cpu.arch == .x86_64 and has_aesni and has_avx) @import("aes/aesni.zig") else @import("aes/soft.zig");
+const has_armaes = comptime std.Target.aarch64.featureSetHas(std.Target.current.cpu.features, .aes);
+const impl = if (std.Target.current.cpu.arch == .x86_64 and has_aesni and has_avx) impl: {
+    break :impl @import("aes/aesni.zig");
+} else if (std.Target.current.cpu.arch == .aarch64 and has_armaes)
+impl: {
+    break :impl @import("aes/armcrypto.zig");
+} else impl: {
+    break :impl @import("aes/soft.zig");
+};
 
 pub const Block = impl.Block;
 pub const AESEncryptCtx = impl.AESEncryptCtx;

lib/std/crypto/aes/aesni.zig

@@ -3,7 +3,6 @@
 // This file is part of [zig](https://ziglang.org/), which is MIT licensed.
 // The MIT license requires this copyright notice to be included in all copies
 // and substantial portions of the software.
-// Based on Go stdlib implementation
 
 const std = @import("../../std.zig");
 const mem = std.mem;