mirror of
https://github.com/BLAKE3-team/BLAKE3
synced 2024-05-13 11:36:09 +02:00
d91f20dd29
Wire up basic functions and features for SSE2 support using the SSE4.1 version
as a basis without implementing the SSE2 instructions yet.
* Cargo.toml: add no_sse2 feature
* benches/bench.rs: wire SSE2 benchmarks
* build.rs: add SSE2 rust intrinsics and assembly builds
* c/Makefile.testing: add SSE2 C and assembly targets
* c/README.md: add SSE2 to C build instructions
* c/blake3_c_rust_bindings/build.rs: add SSE2 C rust binding builds
* c/blake3_c_rust_bindings/src/lib.rs: add SSE2 C rust bindings
* c/blake3_dispatch.c: add SSE2 C dispatch
* c/blake3_impl.h: add SSE2 C function prototypes
* c/blake3_sse2.c: add SSE2 C intrinsic file starting with SSE4.1 version
* c/blake3_sse2_x86-64_{unix.S,windows_gnu.S,windows_msvc.asm}: add SSE2
assembly files starting with SSE4.1 version
* src/ffi_sse2.rs: add rust implementation using SSE2 C rust bindings
* src/lib.rs: add SSE2 rust intrinsics and SSE2 C rust binding rust SSE2 module
configurations
* src/platform.rs: add SSE2 rust platform detection and dispatch
* src/rust_sse2.rs: add SSE2 rust intrinsic file starting with SSE4.1 version
* tools/instruction_set_support/src/main.rs: add SSE2 feature detection
91 lines
3.6 KiB
INI
91 lines
3.6 KiB
INI
[package]
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name = "blake3"
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version = "0.3.6"
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authors = ["Jack O'Connor <oconnor663@gmail.com>"]
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description = "the BLAKE3 hash function"
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repository = "https://github.com/BLAKE3-team/BLAKE3"
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license = "CC0-1.0 OR Apache-2.0"
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documentation = "https://docs.rs/blake3"
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readme = "README.md"
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edition = "2018"
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[features]
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default = ["std"]
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# The NEON implementation does not participate in dynamic feature detection,
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# which is currently x86-only. If "neon" is on, NEON support is assumed. Note
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# that AArch64 always supports NEON, but support on ARMv7 varies. The NEON
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# implementation uses C intrinsics and requires a C compiler.
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neon = []
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# This crate uses libstd for std::io trait implementations, and also for
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# runtime CPU feature detection. This feature is enabled by default. If you use
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# --no-default-features, the only way to use the SIMD implementations in this
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# crate is to enable the corresponding instruction sets statically for the
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# entire build, with e.g. RUSTFLAGS="-C target-cpu=native".
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std = ["digest/std"]
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# The "rayon" feature (defined below as an optional dependency) enables the
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# join::RayonJoin type, which can be used with Hasher::update_with_join to
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# perform multi-threaded hashing. However, even if this feature is enabled, all
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# other APIs remain single-threaded.
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# ---------- Features below this line are for internal testing only. ----------
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# By default on x86_64, this crate uses Samuel Neves' hand-written assembly
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# implementations for SSE4.1, AVX2, and AVX512. (These provide both the best
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# runtime performance, and the fastest build times.) And by default on 32-bit
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# x86, this crate uses Rust intrinsics implementations for SSE4.1 and AVX2, and
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# a C intrinsics implementation for AVX-512. In both cases, if a C compiler is
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# not detected, or if AVX-512 support is missing from the detected compiler,
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# build.rs automatically falls back to a pure Rust build. This feature forces
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# that fallback, for testing purposes. (Note that in CI testing, we set the
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# BLAKE3_CI environment variable, which instructs build.rs to error out rather
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# than doing an automatic fallback.)
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pure = []
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# As described above, on x86_64 this crate use assembly implementations by
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# default. Enabling the "prefer_intrinsics" feature makes this crate use
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# intrinsics implementations on both 32-bit and 64-bit x86, again for testing
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# purposes.
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prefer_intrinsics = []
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# Disable individual instruction sets. CI testing uses these flags to simulate
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# different levels of hardware SIMD support. Note that code for the
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# corresponding instruction set is still compiled; only detection is disabled.
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#
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# As noted above, these flags are *for testing only* and are not stable. It's
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# possible that some users might find that their particular use case performs
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# better if e.g. AVX-512 is disabled, because of issues like CPU downlocking.
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# If that comes up, and if disabling the instruction set here at the feature
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# level turns out to be the right approach, then we can design a stable
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# feature. Until then, we reserve the right to break these features in a patch
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# release.
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no_sse2 = []
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no_sse41 = []
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no_avx2 = []
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no_avx512 = []
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[package.metadata.docs.rs]
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# Document blake3::join::RayonJoin on docs.rs.
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features = ["rayon"]
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[dependencies]
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arrayref = "0.3.5"
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arrayvec = { version = "0.5.1", default-features = false, features = ["array-sizes-33-128"] }
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constant_time_eq = "0.1.5"
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rayon = { version = "1.2.1", optional = true }
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cfg-if = "0.1.10"
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digest = "0.9.0"
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crypto-mac = "0.8.0"
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[dev-dependencies]
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hex = "0.4.2"
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page_size = "0.4.1"
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rand = "0.7.2"
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rand_chacha = "0.2.1"
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reference_impl = { path = "./reference_impl" }
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[build-dependencies]
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cc = "1.0.4"
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