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Update aarch64 linux feature detection
This commit doesn't add support for features not available in LLVM 12
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‎crates/std_detect/src/detect/arch/aarch64.rs

+123-13
Original file line numberDiff line numberDiff line change
@@ -4,35 +4,145 @@ features! {
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@TARGET: aarch64;
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@MACRO_NAME: is_aarch64_feature_detected;
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@MACRO_ATTRS:
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/// Checks if `aarch64` feature is enabled.
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/// This macro tests, at runtime, whether an `aarch64` feature is enabled on aarch64 platforms.
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/// Currently most features are only supported on linux-based platforms.
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///
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/// This macro takes one argument which is a string literal of the feature being tested for.
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/// The feature names are mostly taken from their FEAT_* definitiions in the [ARM Architecture
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/// Reference Manual][docs].
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///
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/// ## Supported arguments
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///
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/// * `"asimd"` or "neon" - FEAT_AdvSIMD
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/// * `"pmull"` - FEAT_PMULL
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/// * `"fp"` - FEAT_FP
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/// * `"fp16"` - FEAT_FP16
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/// * `"sve"` - FEAT_SVE
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/// * `"crc"` - FEAT_CRC
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/// * `"crypto"` - Cryptographic Extension (AES + PMULL + SHA1 + SHA2-256)
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/// * `"lse"` - FEAT_LSE
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/// * `"lse2"` - FEAT_LSE2
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/// * `"rdm"` - FEAT_RDM
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/// * `"rcpc"` - FEAT_LRCPC
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/// * `"rcpc2"` - FEAT_LRCPC2
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/// * `"dotprod"` - FEAT_DotProd
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/// * `"tme"` - FEAT_TME
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/// * `"fhm"` - FEAT_FHM
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/// * `"dit"` - FEAT_DIT
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/// * `"flagm"` - FEAT_FLAGM
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/// * `"ssbs"` - FEAT_SSBS
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/// * `"sb"` - FEAT_SB
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/// * `"pauth"` - FEAT_PAuth
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/// * `"dpb"` - FEAT_DPB
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/// * `"dpb2"` - FEAT_DPB2
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/// * `"sve2"` - FEAT_SVE2
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/// * `"sve2-aes"` - FEAT_SVE2_AES
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/// * `"sve2-sm4"` - FEAT_SVE2_SM4
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/// * `"sve2-sha3"` - FEAT_SVE2_SHA3
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/// * `"sve2-bitperm"` - FEAT_SVE2_BitPerm
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/// * `"fptoint"` - FEAT_FRINTTS
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/// * `"i8mm"` - FEAT_I8MM
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/// * `"f32mm"` - FEAT_F32MM
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/// * `"f64mm"` - FEAT_F64MM
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/// * `"bf16"` - FEAT_BF16
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/// * `"rand"` - FEAT_RNG
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/// * `"bti"` - FEAT_BTI
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/// * `"mte"` - FEAT_MTE
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/// * `"jsconv"` - FEAT_JSCVT
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/// * `"fcma"` - FEAT_FCMA
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/// * `"sha2"` - FEAT_SHA1 & FEAT_SHA256
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/// * `"sha3"` - FEAT_SHA512 & FEAT_SHA3
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/// * `"sm4"` - FEAT_SM3 & FEAT_SM4
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///
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/// [docs]: https://developer.arm.com/documentation/ddi0487/latest
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#[unstable(feature = "stdsimd", issue = "27731")]
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@BIND_FEATURE_NAME: "asimd"; "neon";
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@NO_RUNTIME_DETECTION: "ras";
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@NO_RUNTIME_DETECTION: "v8.1a";
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@NO_RUNTIME_DETECTION: "v8.2a";
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@NO_RUNTIME_DETECTION: "v8.3a";
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@NO_RUNTIME_DETECTION: "v8.4a";
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@NO_RUNTIME_DETECTION: "v8.5a";
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@NO_RUNTIME_DETECTION: "v8.6a";
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@NO_RUNTIME_DETECTION: "v8.7a";
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@FEATURE: #[unstable(feature = "stdsimd", issue = "27731")] asimd: "neon";
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/// ARM Advanced SIMD (ASIMD)
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/// FEAT_AdvSIMD (Advanced SIMD/NEON)
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@FEATURE: #[unstable(feature = "stdsimd", issue = "27731")] pmull: "pmull";
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/// Polynomial Multiply
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/// FEAT_PMULL (Polynomial Multiply)
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@FEATURE: #[unstable(feature = "stdsimd", issue = "27731")] fp: "fp";
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/// Floating point support
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/// FEAT_FP (Floating point support)
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@FEATURE: #[unstable(feature = "stdsimd", issue = "27731")] fp16: "fp16";
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/// Half-float support.
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/// FEAT_FP16 (Half-float support)
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@FEATURE: #[unstable(feature = "stdsimd", issue = "27731")] sve: "sve";
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/// Scalable Vector Extension (SVE)
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/// FEAT_SVE (Scalable Vector Extension)
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@FEATURE: #[unstable(feature = "stdsimd", issue = "27731")] crc: "crc";
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/// CRC32 (Cyclic Redundancy Check)
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/// FEAT_CRC32 (Cyclic Redundancy Check)
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@FEATURE: #[unstable(feature = "stdsimd", issue = "27731")] crypto: "crypto";
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/// Crypto: AES + PMULL + SHA1 + SHA2
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/// Cryptographic Extension (AES + PMULL + SHA1 + SHA2-256)
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@FEATURE: #[unstable(feature = "stdsimd", issue = "27731")] lse: "lse";
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/// Atomics (Large System Extension)
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/// FEAT_LSE (Large System Extension - atomics)
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@FEATURE: #[unstable(feature = "stdsimd", issue = "27731")] lse2: "lse2";
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/// FEAT_LSE2 (unaligned and register-pair atomics)
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@FEATURE: #[unstable(feature = "stdsimd", issue = "27731")] rdm: "rdm";
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/// Rounding Double Multiply (ASIMDRDM)
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/// FEAT_RDM (Rounding Doubling Multiply - ASIMDRDM)
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@FEATURE: #[unstable(feature = "stdsimd", issue = "27731")] rcpc: "rcpc";
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/// Release consistent Processor consistent (RcPc)
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/// FEAT_LRCPC (Release consistent Processor consistent)
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@FEATURE: #[unstable(feature = "stdsimd", issue = "27731")] rcpc2: "rcpc2";
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/// FEAT_LRCPC2 (RCPC with immediate offsets)
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@FEATURE: #[unstable(feature = "stdsimd", issue = "27731")] dotprod: "dotprod";
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/// Vector Dot-Product (ASIMDDP)
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/// FEAT_DotProd (Vector Dot-Product - ASIMDDP)
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@FEATURE: #[unstable(feature = "stdsimd", issue = "27731")] tme: "tme";
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/// Transactional Memory Extensions (TME)
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/// FEAT_TME (Transactional Memory Extensions)
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@FEATURE: #[unstable(feature = "stdsimd", issue = "27731")] fhm: "fhm";
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/// FEAT_FHM (fp16 multiplication instructions)
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@FEATURE: #[unstable(feature = "stdsimd", issue = "27731")] dit: "dit";
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/// FEAT_DIT (Data Independent Timing instructions)
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@FEATURE: #[unstable(feature = "stdsimd", issue = "27731")] flagm: "flagm";
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/// FEAT_FLAGM (flag manipulation instructions)
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@FEATURE: #[unstable(feature = "stdsimd", issue = "27731")] ssbs: "ssbs";
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/// FEAT_SSBS (speculative store bypass safe)
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@FEATURE: #[unstable(feature = "stdsimd", issue = "27731")] sb: "sb";
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/// FEAT_SB (speculation barrier)
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@FEATURE: #[unstable(feature = "stdsimd", issue = "27731")] pauth: "pauth";
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/// FEAT_PAuth (pointer authentication)
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@FEATURE: #[unstable(feature = "stdsimd", issue = "27731")] dpb: "dpb";
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/// FEAT_DPB (aka dcpop - data cache clean to point of persistance)
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@FEATURE: #[unstable(feature = "stdsimd", issue = "27731")] dpb2: "dpb2";
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/// FEAT_DPB2 (aka dcpodp - data cache clean to point of deep persistance)
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@FEATURE: #[unstable(feature = "stdsimd", issue = "27731")] sve2: "sve2";
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/// FEAT_SVE2 (Scalable Vector Extension 2)
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@FEATURE: #[unstable(feature = "stdsimd", issue = "27731")] sve2_aes: "sve2-aes";
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/// FEAT_SVE_AES (SVE2 AES crypto)
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@FEATURE: #[unstable(feature = "stdsimd", issue = "27731")] sve2_sm4: "sve2-sm4";
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/// FEAT_SVE_SM4 (SVE2 SM4 crypto)
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@FEATURE: #[unstable(feature = "stdsimd", issue = "27731")] sve2_sha3: "sve2-sha3";
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/// FEAT_SVE_SHA3 (SVE2 SHA3 crypto)
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@FEATURE: #[unstable(feature = "stdsimd", issue = "27731")] sve2_bitperm: "sve2-bitperm";
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/// FEAT_SVE_BitPerm (SVE2 bit permutation instructions)
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@FEATURE: #[unstable(feature = "stdsimd", issue = "27731")] fptoint: "fptoint";
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/// FEAT_FRINTTS (float to integer rounding instructions)
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@FEATURE: #[unstable(feature = "stdsimd", issue = "27731")] i8mm: "i8mm";
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/// FEAT_I8MM (integer matrix multiplication, plus ASIMD support)
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@FEATURE: #[unstable(feature = "stdsimd", issue = "27731")] f32mm: "f32mm";
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/// FEAT_F32MM (single-precision matrix multiplication)
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@FEATURE: #[unstable(feature = "stdsimd", issue = "27731")] f64mm: "f64mm";
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/// FEAT_F64MM (double-precision matrix multiplication)
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@FEATURE: #[unstable(feature = "stdsimd", issue = "27731")] bf16: "bf16";
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/// FEAT_BF16 (BFloat16 type, plus MM instructions, plus ASIMD support)
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@FEATURE: #[unstable(feature = "stdsimd", issue = "27731")] rand: "rand";
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/// FEAT_RNG (Random Number Generator)
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@FEATURE: #[unstable(feature = "stdsimd", issue = "27731")] bti: "bti";
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/// FEAT_BTI (Branch Target Identification)
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@FEATURE: #[unstable(feature = "stdsimd", issue = "27731")] mte: "mte";
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/// FEAT_MTE (Memory Tagging Extension)
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@FEATURE: #[unstable(feature = "stdsimd", issue = "27731")] jsconv: "jsconv";
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/// FEAT_JSCVT (JavaScript float conversion instructions)
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@FEATURE: #[unstable(feature = "stdsimd", issue = "27731")] fcma: "fcma";
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/// FEAT_FCMA (float complex number operations)
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@FEATURE: #[unstable(feature = "stdsimd", issue = "27731")] sha2: "sha2";
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/// FEAT_SHA1 & FEAT_SHA256 (SHA1 & SHA2-256 instructions)
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@FEATURE: #[unstable(feature = "stdsimd", issue = "27731")] sha3: "sha3";
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/// FEAT_SHA512 & FEAT_SHA3 (SHA2-512 & SHA3 instructions)
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@FEATURE: #[unstable(feature = "stdsimd", issue = "27731")] sm4: "sm4";
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/// FEAT_SM3 & FEAT_SM4 (SM3 & SM4 instructions)
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}

‎crates/std_detect/src/detect/bit.rs

+1-1
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@@ -4,6 +4,6 @@
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#[allow(dead_code)]
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#[inline]
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pub(crate) fn test(x: usize, bit: u32) -> bool {
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debug_assert!(bit < 32, "bit index out-of-bounds");
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debug_assert!(bit < usize::BITS, "bit index out-of-bounds");
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x & (1 << bit) != 0
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}

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