Marc Tiehuis 326b7b794b
Improve siphash performance for small keys by up to 30% (#3124)
This removes the partial buffer handling from the full slice api.

`./benchmark --filter siphash --count 1024`

old

    siphash(1,3)
       iterative: 3388 MiB/s [67532e53a0d210bf]
      small keys: 1258 MiB/s [948c91176a000000]
    siphash(2,4)
       iterative: 2061 MiB/s [f792d39bff42f819]
      small keys:  902 MiB/s [e1ecba6614000000]

new

    siphash(1,3)
       iterative: 3410 MiB/s [67532e53a0d210bf]
      small keys: 1639 MiB/s [948c91176a000000]
    siphash(2,4)
       iterative: 2053 MiB/s [f792d39bff42f819]
      small keys: 1074 MiB/s [e1ecba6614000000]
2019-08-27 20:13:57 +12:00
2019-07-16 19:54:14 -04:00
2019-07-16 00:05:12 -04:00
2019-07-23 18:54:45 -04:00
2019-08-04 15:15:25 -04:00
2015-08-05 16:22:18 -07:00
2019-08-11 16:09:23 -04:00

ZIG

A general-purpose programming language designed for robustness, optimality, and maintainability.

Resources

Building from Source

Build Status

Note that you can download a binary of master branch.

Stage 1: Build Zig from C++ Source Code

Dependencies

POSIX
  • cmake >= 2.8.5
  • gcc >= 5.0.0 or clang >= 3.6.0
  • LLVM, Clang, LLD development libraries == 8.x, compiled with the same gcc or clang version above
Windows
  • cmake >= 2.8.5
  • Microsoft Visual Studio 2017 (version 15.8)
  • LLVM, Clang, LLD development libraries == 8.x, compiled with the same MSVC version above

Instructions

POSIX
mkdir build
cd build
cmake ..
make install
MacOS
brew install cmake llvm@8
brew outdated llvm@8 || brew upgrade llvm@8
mkdir build
cd build
cmake .. -DCMAKE_PREFIX_PATH=/usr/local/Cellar/llvm/8.0.0_1
make install
Windows

See https://github.com/ziglang/zig/wiki/Building-Zig-on-Windows

Stage 2: Build Self-Hosted Zig from Zig Source Code

Note: Stage 2 compiler is not complete. Beta users of Zig should use the Stage 1 compiler for now.

Dependencies are the same as Stage 1, except now you can use stage 1 to compile Zig code.

bin/zig build --prefix $(pwd)/stage2

This produces ./stage2/bin/zig which can be used for testing and development. Once it is feature complete, it will be used to build stage 3 - the final compiler binary.

Stage 3: Rebuild Self-Hosted Zig Using the Self-Hosted Compiler

Note: Stage 2 compiler is not yet able to build Stage 3. Building Stage 3 is not yet supported.

Once the self-hosted compiler can build itself, this will be the actual compiler binary that we will install to the system. Until then, users should use stage 1.

Debug / Development Build

./stage2/bin/zig build --prefix $(pwd)/stage3

Release / Install Build

./stage2/bin/zig build install -Drelease
Description
General-purpose programming language and toolchain for maintaining robust, optimal, and reusable software.
Readme MIT 711 MiB
Languages
Zig 98.3%
C 1.1%
C++ 0.2%
Python 0.1%