Commit `32563e6829`

Frank Denis <124872+jedisct1@users.noreply.github.com>

2022-11-07 12:28:37

crypto.core.aes: process 6 block in parallel instead of 8 on aarch64 (#13473)

* crypto.core.aes: process 6 block in parallel instead of 8 on aarch64 At least on Apple Silicon, this is slightly faster than 8 blocks. * AES: add parallel blocks for tigerlake, rocketlake, alderlake, zen3

master

1 parent 907f3ef

Changed files (2)

lib

std

crypto

aes

aesni.zig

armcrypto.zig

@@ -101,8 +101,8 @@ pub const Block = struct {
             &cpu.sandybridge, &cpu.ivybridge => 8,
             &cpu.haswell, &cpu.broadwell => 7,
             &cpu.cannonlake, &cpu.skylake, &cpu.skylake_avx512 => 4,
-            &cpu.icelake_client, &cpu.icelake_server => 6,
-            &cpu.znver1, &cpu.znver2 => 8,
+            &cpu.icelake_client, &cpu.icelake_server, &cpu.tigerlake, &cpu.rocketlake, &cpu.alderlake => 6,
+            &cpu.znver1, &cpu.znver2, &cpu.znver3 => 8,
             else => 8,
         };

@@ -109,7 +109,7 @@ pub const Block = struct {
     /// Perform operations on multiple blocks in parallel.
     pub const parallel = struct {
         /// The recommended number of AES encryption/decryption to perform in parallel for the chosen implementation.
-        pub const optimal_parallel_blocks = 8;
+        pub const optimal_parallel_blocks = 6;
 
         /// Encrypt multiple blocks in parallel, each their own round key.
         pub inline fn encryptParallel(comptime count: usize, blocks: [count]Block, round_keys: [count]Block) [count]Block {

Commit 32563e6829

Commit `32563e6829`