m4 info missing feature SME and streaming SVE2.. and l3 returning -1..

[oscarbg]

using latest version 2.2.9

./cpuid

Name: Apple M4
Vendor String: Apple
Vendor ID: VendorUnknown
PhysicalCores: 10
Threads Per Core: 1
Logical Cores: 10
CPU Family 1867590060 Model: 0 Stepping: 0
Features: AESARM,ASIMD,ASIMDDP,ASIMDHP,ASIMDRDM,ATOMICS,CRC32,DCPOP,FCMA,FP,FPHP,GPA,JSCVT,LRCPC,PMULL,SHA1,SHA2,SHA3,SHA512
Microarchitecture level: 0
Cacheline bytes: 128
L1 Instruction Cache: 131072 bytes
L1 Data Cache: 65536 bytes
L2 Cache: 4194304 bytes
**L3 Cache: -1 bytes**

so L3 is invalid and missing reporting SME support in M4..

[klauspost]

The detection is here: https://github.com/klauspost/cpuid/blob/master/os_darwin_arm64.go#L71

You are welcome to send changes with additions, but I don't have any HW to test.

[oscarbg]

thanks.. I'm getting related to SME:
sysctl -a:

hw.optional.arm.FEAT_BTI: 1
hw.optional.arm.FEAT_SME: 1
hw.optional.arm.FEAT_SME2: 1
hw.optional.arm.SME_F32F32: 1
hw.optional.arm.SME_BI32I32: 1
hw.optional.arm.SME_B16F32: 1
hw.optional.arm.SME_F16F32: 1
hw.optional.arm.SME_I8I32: 1
hw.optional.arm.SME_I16I32: 1
hw.optional.arm.FEAT_SME_F64F64: 1
hw.optional.arm.FEAT_SME_I16I64: 1

full log:

hw.optional.arm.FEAT_FlagM: 1
hw.optional.arm.FEAT_FlagM2: 1
hw.optional.arm.FEAT_FHM: 1
hw.optional.arm.FEAT_DotProd: 1
hw.optional.arm.FEAT_SHA3: 1
hw.optional.arm.FEAT_RDM: 1
hw.optional.arm.FEAT_LSE: 1
hw.optional.arm.FEAT_SHA256: 1
hw.optional.arm.FEAT_SHA512: 1
hw.optional.arm.FEAT_SHA1: 1
hw.optional.arm.FEAT_AES: 1
hw.optional.arm.FEAT_PMULL: 1
hw.optional.arm.FEAT_SPECRES: 0
hw.optional.arm.FEAT_SB: 1
hw.optional.arm.FEAT_FRINTTS: 1
hw.optional.arm.FEAT_LRCPC: 1
hw.optional.arm.FEAT_LRCPC2: 1
hw.optional.arm.FEAT_FCMA: 1
hw.optional.arm.FEAT_JSCVT: 1
hw.optional.arm.FEAT_PAuth: 1
hw.optional.arm.FEAT_PAuth2: 1
hw.optional.arm.FEAT_FPAC: 1
hw.optional.arm.FEAT_DPB: 1
hw.optional.arm.FEAT_DPB2: 1
hw.optional.arm.FEAT_BF16: 1
hw.optional.arm.FEAT_I8MM: 1
hw.optional.arm.FEAT_WFxT: 1
hw.optional.arm.FEAT_RPRES: 1
hw.optional.arm.FEAT_ECV: 1
hw.optional.arm.FEAT_AFP: 1
hw.optional.arm.FEAT_LSE2: 1
hw.optional.arm.FEAT_CSV2: 1
hw.optional.arm.FEAT_CSV3: 1
hw.optional.arm.FEAT_DIT: 1
hw.optional.arm.FEAT_FP16: 1
hw.optional.arm.FEAT_SSBS: 0
hw.optional.arm.FEAT_BTI: 1
hw.optional.arm.FEAT_SME: 1
hw.optional.arm.FEAT_SME2: 1
hw.optional.arm.SME_F32F32: 1
hw.optional.arm.SME_BI32I32: 1
hw.optional.arm.SME_B16F32: 1
hw.optional.arm.SME_F16F32: 1
hw.optional.arm.SME_I8I32: 1
hw.optional.arm.SME_I16I32: 1
hw.optional.arm.FEAT_SME_F64F64: 1
hw.optional.arm.FEAT_SME_I16I64: 1
hw.optional.arm.FP_SyncExceptions: 1
hw.optional.arm.caps: 1152375836863623167
hw.optional.floatingpoint: 1
hw.optional.neon: 1
hw.optional.neon_hpfp: 1
hw.optional.neon_fp16: 1
hw.optional.armv8_1_atomics: 1
hw.optional.armv8_2_fhm: 1
hw.optional.armv8_2_sha512: 1
hw.optional.armv8_2_sha3: 1
hw.optional.armv8_3_compnum: 1
hw.optional.watchpoint: 4
hw.optional.breakpoint: 6
hw.optional.armv8_crc32: 1
hw.optional.armv8_gpi: 1
hw.optional.AdvSIMD: 1
hw.optional.AdvSIMD_HPFPCvt: 1
hw.optional.ucnormal_mem: 1
hw.optional.arm64: 1