Commit 32563e68294f3ee9286e28574e1bb58e89366909 | zig

author	Frank Denis <124872+jedisct1@users.noreply.github.com> 2022-11-07 12:28:37+01:00
committer	GitHub <noreply@github.com> 2022-11-07 12:28:37+01:00
log	32563e68294f3ee9286e28574e1bb58e89366909
tree	3c2939548fd30d84b8fa9ef6d636c09cfa370e2e
parent	907f3ef887776dc7e0ed3661230e5c11973ad6a6
signature	Signed by PGP key 4AEE18F83AFDEB23

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

2 files changed, 3 insertions(+), 3 deletions(-)

lib
- std
  - crypto
    aes
    aesni.zig
    armcrypto.zig

lib/std/crypto/aes/aesni.zig+2-2

...	...	@@ -101,8 +101,8 @@ pub const Block = struct {
101	101	&cpu.sandybridge, &cpu.ivybridge => 8,
102	102	&cpu.haswell, &cpu.broadwell => 7,
103	103	&cpu.cannonlake, &cpu.skylake, &cpu.skylake_avx512 => 4,
104		&cpu.icelake_client, &cpu.icelake_server => 6,
105		&cpu.znver1, &cpu.znver2 => 8,
	104	&cpu.icelake_client, &cpu.icelake_server, &cpu.tigerlake, &cpu.rocketlake, &cpu.alderlake => 6,
	105	&cpu.znver1, &cpu.znver2, &cpu.znver3 => 8,
106	106	else => 8,
107	107	};
108	108

lib/std/crypto/aes/armcrypto.zig+1-1

...	...	@@ -109,7 +109,7 @@ pub const Block = struct {
109	109	/// Perform operations on multiple blocks in parallel.
110	110	pub const parallel = struct {
111	111	/// The recommended number of AES encryption/decryption to perform in parallel for the chosen implementation.
112		pub const optimal_parallel_blocks = 8;
	112	pub const optimal_parallel_blocks = 6;
113	113
114	114	/// Encrypt multiple blocks in parallel, each their own round key.
115	115	pub inline fn encryptParallel(comptime count: usize, blocks: [count]Block, round_keys: [count]Block) [count]Block {