66e1f11ef4
llvm is currently not able to conver `Vec::extend` into a memcpy for `Copy` types, which results in methods like `Vec::push_all` to run twice as slow as it should be running. This patch takes the unsafe `Vec::clone` optimization to speed up all the operations that are cloning a slice into a `Vec`. before: ``` test vec::tests::bench_clone_from_0000_0000 ... bench: 12 ns/iter (+/- 2) test vec::tests::bench_clone_from_0000_0010 ... bench: 125 ns/iter (+/- 4) = 80 MB/s test vec::tests::bench_clone_from_0000_0100 ... bench: 360 ns/iter (+/- 33) = 277 MB/s test vec::tests::bench_clone_from_0000_1000 ... bench: 2601 ns/iter (+/- 175) = 384 MB/s test vec::tests::bench_clone_from_0010_0000 ... bench: 12 ns/iter (+/- 2) test vec::tests::bench_clone_from_0010_0010 ... bench: 125 ns/iter (+/- 10) = 80 MB/s test vec::tests::bench_clone_from_0010_0100 ... bench: 361 ns/iter (+/- 28) = 277 MB/s test vec::tests::bench_clone_from_0100_0010 ... bench: 131 ns/iter (+/- 13) = 76 MB/s test vec::tests::bench_clone_from_0100_0100 ... bench: 360 ns/iter (+/- 9) = 277 MB/s test vec::tests::bench_clone_from_0100_1000 ... bench: 2575 ns/iter (+/- 168) = 388 MB/s test vec::tests::bench_clone_from_1000_0100 ... bench: 356 ns/iter (+/- 20) = 280 MB/s test vec::tests::bench_clone_from_1000_1000 ... bench: 2605 ns/iter (+/- 167) = 383 MB/s test vec::tests::bench_from_slice_0000 ... bench: 11 ns/iter (+/- 0) test vec::tests::bench_from_slice_0010 ... bench: 115 ns/iter (+/- 5) = 86 MB/s test vec::tests::bench_from_slice_0100 ... bench: 309 ns/iter (+/- 170) = 323 MB/s test vec::tests::bench_from_slice_1000 ... bench: 2065 ns/iter (+/- 198) = 484 MB/s test vec::tests::bench_push_all_0000_0000 ... bench: 7 ns/iter (+/- 0) test vec::tests::bench_push_all_0000_0010 ... bench: 79 ns/iter (+/- 7) = 126 MB/s test vec::tests::bench_push_all_0000_0100 ... bench: 342 ns/iter (+/- 18) = 292 MB/s test vec::tests::bench_push_all_0000_1000 ... bench: 2873 ns/iter (+/- 75) = 348 MB/s test vec::tests::bench_push_all_0010_0010 ... bench: 154 ns/iter (+/- 8) = 64 MB/s test vec::tests::bench_push_all_0100_0100 ... bench: 518 ns/iter (+/- 18) = 193 MB/s test vec::tests::bench_push_all_1000_1000 ... bench: 4490 ns/iter (+/- 223) = 222 MB/s ``` after: ``` test vec::tests::bench_clone_from_0000_0000 ... bench: 12 ns/iter (+/- 1) test vec::tests::bench_clone_from_0000_0010 ... bench: 123 ns/iter (+/- 5) = 81 MB/s test vec::tests::bench_clone_from_0000_0100 ... bench: 367 ns/iter (+/- 23) = 272 MB/s test vec::tests::bench_clone_from_0000_1000 ... bench: 2618 ns/iter (+/- 252) = 381 MB/s test vec::tests::bench_clone_from_0010_0000 ... bench: 12 ns/iter (+/- 1) test vec::tests::bench_clone_from_0010_0010 ... bench: 124 ns/iter (+/- 7) = 80 MB/s test vec::tests::bench_clone_from_0010_0100 ... bench: 369 ns/iter (+/- 34) = 271 MB/s test vec::tests::bench_clone_from_0100_0010 ... bench: 123 ns/iter (+/- 6) = 81 MB/s test vec::tests::bench_clone_from_0100_0100 ... bench: 371 ns/iter (+/- 25) = 269 MB/s test vec::tests::bench_clone_from_0100_1000 ... bench: 2713 ns/iter (+/- 532) = 368 MB/s test vec::tests::bench_clone_from_1000_0100 ... bench: 369 ns/iter (+/- 14) = 271 MB/s test vec::tests::bench_clone_from_1000_1000 ... bench: 2611 ns/iter (+/- 194) = 382 MB/s test vec::tests::bench_from_slice_0000 ... bench: 7 ns/iter (+/- 0) test vec::tests::bench_from_slice_0010 ... bench: 108 ns/iter (+/- 4) = 92 MB/s test vec::tests::bench_from_slice_0100 ... bench: 235 ns/iter (+/- 24) = 425 MB/s test vec::tests::bench_from_slice_1000 ... bench: 1318 ns/iter (+/- 96) = 758 MB/s test vec::tests::bench_push_all_0000_0000 ... bench: 7 ns/iter (+/- 0) test vec::tests::bench_push_all_0000_0010 ... bench: 70 ns/iter (+/- 4) = 142 MB/s test vec::tests::bench_push_all_0000_0100 ... bench: 176 ns/iter (+/- 16) = 568 MB/s test vec::tests::bench_push_all_0000_1000 ... bench: 1125 ns/iter (+/- 94) = 888 MB/s test vec::tests::bench_push_all_0010_0010 ... bench: 159 ns/iter (+/- 15) = 62 MB/s test vec::tests::bench_push_all_0100_0100 ... bench: 363 ns/iter (+/- 12) = 275 MB/s test vec::tests::bench_push_all_1000_1000 ... bench: 2860 ns/iter (+/- 415) = 349 MB/s ``` This also includes extra benchmarks for `Vec` and `MemWriter`.
This is a preliminary version of the Rust compiler, libraries and tools.
Source layout:
| Path | Description |
|---|---|
librustc/ |
The self-hosted compiler |
liballoc/ |
Rust's core allocation library |
libcore/ |
The Rust core library |
libdebug/ |
Debugging utilities |
libstd/ |
The standard library (imported and linked by default) |
libgreen/ |
The M:N runtime library |
libnative/ |
The 1:1 runtime library |
libsyntax/ |
The Rust parser and pretty-printer |
libtest/ |
Rust's test-runner code |
| ------------------- | --------------------------------------------------------- |
libarena/ |
The arena (a fast but limited) memory allocator |
libbacktrace/ |
The libbacktrace library |
libcollections/ |
A collection of useful data structures and containers |
libflate/ |
Simple compression library |
libfmt_macros/ |
Macro support for format strings |
libfourcc/ |
Data format identifier library |
libgetopts/ |
Get command-line-options library |
libglob/ |
Unix glob patterns library |
libgraphviz/ |
Generating files for Graphviz |
libhexfloat/ |
Hexadecimal floating-point literals |
liblibc/ |
Bindings for the C standard library |
liblog/ |
Utilities for program-wide and customizable logging |
libnum/ |
Extended number support library (complex, rational, etc) |
librand/ |
Random numbers and distributions |
libregex/ |
Regular expressions |
libregex_macros/ |
The regex! syntax extension |
libsemver/ |
Rust's semantic versioning library |
libserialize/ |
Encode-Decode types library |
libsync/ |
Concurrency mechanisms and primitives |
libterm/ |
ANSI color library for terminals |
libtime/ |
Time operations library |
liburl/ |
URL handling lirary |
libuuid/ |
UUID's handling code |
| ------------------- | --------------------------------------------------------- |
rt/ |
The runtime system |
rt/rust_*.c |
- Some of the runtime services |
rt/vg |
- Valgrind headers |
rt/msvc |
- MSVC support |
rt/sundown |
- The Markdown library used by rustdoc |
| ------------------- | --------------------------------------------------------- |
compiletest/ |
The test runner |
test/ |
Testsuite |
test/codegen |
- Tests for the LLVM IR infrastructure |
test/compile-fail |
- Tests that should fail to compile |
test/debug-info |
- Tests for the debuginfo tool |
test/run-fail |
- Tests that should compile, run and fail |
test/run-make |
- Tests that depend on a Makefile infrastructure |
test/run-pass |
- Tests that should compile, run and succeed |
test/bench |
- Benchmarks and miscellaneous |
test/pretty |
- Pretty-printer tests |
test/auxiliary |
- Dependencies of tests |
| ------------------- | --------------------------------------------------------- |
librustdoc/ |
The Rust API documentation tool |
libuv/ |
The libuv submodule |
librustuv/ |
Rust libuv support code |
| ------------------- | --------------------------------------------------------- |
llvm/ |
The LLVM submodule |
rustllvm/ |
LLVM support code |
| ------------------- | --------------------------------------------------------- |
etc/ |
Scripts, editors support, misc |
NOTE: This list (especially the second part of the table which contains modules and libraries) is highly volatile and subject to change.