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Diffstat (limited to 'third_party/rust/packed_simd/perf-guide/src/target-feature/features.md')
| -rw-r--r-- | third_party/rust/packed_simd/perf-guide/src/target-feature/features.md | 13 |
1 files changed, 0 insertions, 13 deletions
diff --git a/third_party/rust/packed_simd/perf-guide/src/target-feature/features.md b/third_party/rust/packed_simd/perf-guide/src/target-feature/features.md deleted file mode 100644 index b93030ca67..0000000000 --- a/third_party/rust/packed_simd/perf-guide/src/target-feature/features.md +++ /dev/null @@ -1,13 +0,0 @@ -# Enabling target features - -Not all processors of a certain architecture will have SIMD processing units, -and using a SIMD instruction which is not supported will trigger undefined behavior. - -To allow building safe, portable programs, the Rust compiler will **not**, by default, -generate any sort of vector instructions, unless it can statically determine -they are supported. For example, on AMD64, SSE2 support is architecturally guaranteed. -The `x86_64-apple-darwin` target enables up to SSSE3. The get a defintive list of -which features are enabled by default on various platforms, refer to the target -specifications [in the compiler's source code][targets]. - -[targets]: https://github.com/rust-lang/rust/tree/master/src/librustc_target/spec |