After reading
https://forum.dlang.org/thread/[email protected]
it's about time I announce my little Python snippet that
exercises the compilation speed of D and other languages with a
superficial test program generator at
https://github.com/nordlow/compiler-benchmark
Run as
./benchmark.py
This generates a single source file for each supported language,
currently D, C, C++, Go and Rust, containing 50k number of
trivial functions that from the main function are called and
reduced to a single integer which is returned at the end of main.
The benchmark then measures the time it takes for each compiler
to run semantic analysis on the source file (excluding output of
any object files).
My only question is:
How is it possible for Rust be to 50x slower than D in this
test!!!??? Am I calling rustc in the wrong way? Especially taking
into account the amount of time (and money) that has been put
into making Rust fast(er). Through fancy caching of IR-files and
more.
I very much welcome PRs that add more languages.
Output on Ubuntu 18.04 system is
Code-generation:
Generating generated/c/foo.c took 0.073 seconds (C)
Generating generated/c++/foo.c++ took 0.073 seconds (C++)
Generating generated/d/foo.d took 0.076 seconds (D)
Generating generated/rust/foo.rs took 0.076 seconds (Rust)
Generating generated/zig/foo.zig took 0.077 seconds (Zig)
Generating generated/go/foo.go took 0.074 seconds (Go)
Clang:
- Checking of generated/c/foo.c took 1.373 seconds (using
"/usr/bin/clang-7")
- Checking of generated/c++/foo.c++ took 1.345 seconds (using
"/usr/bin/clang++-7")
GCC:
- Checking of generated/c/foo.c took 0.385 seconds (using
"/usr/bin/gcc-5")
- Checking of generated/c++/foo.c++ took 0.675 seconds (using
"/usr/bin/g++-5")
- Checking of generated/c/foo.c took 0.551 seconds (using
"/usr/bin/gcc-6")
- Checking of generated/c/foo.c took 0.518 seconds (using
"/usr/bin/gcc-7")
- Checking of generated/c++/foo.c++ took 1.294 seconds (using
"/usr/bin/g++-7")
- Checking of generated/c/foo.c took 0.527 seconds (using
"/usr/bin/gcc-8")
- Checking of generated/c++/foo.c++ took 1.363 seconds (using
"/usr/bin/g++-8")
D:
- Checking of generated/d/foo.d took 0.403 seconds (using
"/usr/bin/dmd")
- Checking of generated/d/foo.d took 0.352 seconds (using
"/home/per/.local/ldc2-1.15.0-beta1-linux-x86_64/bin/ldmd2")
Go:
- Checking of generated/go/foo.go took 1.716 seconds (using
"/usr/bin/gccgo")
Rust:
- Checking of generated/rust/foo.rs took 17.828 seconds (using
"/home/per/.cargo/bin/rustc")
Zig:
Speedups:
- D to gcc-8: 1.50
- D to g++-8: 3.88
- D to Clang: 3.90
- D to Clang++: 3.83
- D to Go: 4.88
- D to Rust: 50.71
