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Alex Crichton 73540551e5 Rewrite pass management with LLVM 
Beforehand, it was unclear whether rust was performing the "recommended set" of
optimizations provided by LLVM for code. This commit changes the way we run
passes to closely mirror that of clang, which in theory does it correctly. The
notable changes include:

* Passes are no longer explicitly added one by one. This would be difficult to
  keep up with as LLVM changes and we don't guaranteed always know the best
  order in which to run passes
* Passes are now managed by LLVM's PassManagerBuilder object. This is then used
  to populate the various pass managers run.
* We now run both a FunctionPassManager and a module-wide PassManager. This is
  what clang does, and I presume that we *may* see a speed boost from the
  module-wide passes just having to do less work. I have no measured this.
* The codegen pass manager has been extracted to its own separate pass manager
  to not get mixed up with the other passes
* All pass managers now include passes for target-specific data layout and
  analysis passes

Some new features include:

* You can now print all passes being run with `-Z print-llvm-passes`
* When specifying passes via `--passes`, the passes are now appended to the
  default list of passes instead of overwriting them.
* The output of `--passes list` is now generated by LLVM instead of maintaining
  a list of passes ourselves
* Loop vectorization is turned on by default as an optimization pass and can be
  disabled with `-Z no-vectorize-loops`
2013-08-26 20:11:51 -07:00
doc Talk about trait bounds in the tutorial. 2013-08-23 19:20:34 -04:00
man Updated rustpkg man page to match 0.7 2013-07-08 23:03:20 +10:00
mk auto merge of #8722 : graydon/rust/2013-08-23-test-shard, r=msullivan 2013-08-24 02:21:27 -07:00
src Rewrite pass management with LLVM 2013-08-26 20:11:51 -07:00
.gitattributes Force line ending of '.in' files in jemalloc to LF 2013-08-24 22:20:20 +05:30
.gitignore Ignore the generated docs for libextra 2013-05-25 17:07:18 +10:00
.gitmodules Update LLVM 2013-08-04 10:58:22 -07:00
.mailmap .mailmap: tolerate different names, emails in shortlog 2013-06-05 23:26:00 +05:30
AUTHORS.txt Update AUTHORS.txt 2013-06-21 00:54:17 -04:00
configure enable tests for the container tutorial 2013-08-20 22:05:46 -04:00
CONTRIBUTING.md Update CONTRIBUTING.md 2013-06-13 15:41:34 -06:00
COPYRIGHT add gitattributes and fix whitespace issues 2013-05-03 20:01:42 -04:00
LICENSE-APACHE
LICENSE-MIT
Makefile.in Define cfg(rtopt) when optimizing. Turn off runtime sanity checks 2013-08-23 21:19:59 -07:00
README.md Reorganize README to make it more clear. 2013-07-19 20:52:16 -04:00
RELEASES.txt More 0.7 release notes 2013-06-30 15:02:52 -07:00

README.md

The Rust Programming Language

This is a compiler for Rust, including standard libraries, tools and documentation.

Quick Start

Windows

  1. Download and use the installer.
  2. Read the tutorial.
  3. Enjoy!

Note: Windows users should read the detailed getting started notes on the wiki. Even when using the binary installer the Windows build requires a MinGW installation, the precise details of which are not discussed here.

Linux / OS X

  1. Install the prerequisites (if not already installed)

    • g++ 4.4 or clang++ 3.x
    • python 2.6 or later (but not 3.x)
    • perl 5.0 or later
    • gnu make 3.81 or later
    • curl

  2. Download and build Rust You can either download a tarball or build directly from the repo.

    To build from the tarball do:

     $ curl -O http://static.rust-lang.org/dist/rust-0.7.tar.gz
 $ tar -xzf rust-0.7.tar.gz
 $ cd rust-0.7

    Or to build from the repo do:

     $ git clone https://github.com/mozilla/rust.git
 $ cd rust

    Now that you have Rust's source code, you can configure and build it:

     $ ./configure
 $ make && make install

    You may need to use sudo make install if you do not normally have permission to modify the destination directory. The install locations can be adjusted by passing a --prefix argument to configure. Various other options are also supported, pass --help for more information on them.

    When complete, make install will place several programs into /usr/local/bin: rustc, the Rust compiler; rustdoc, the API-documentation tool, and rustpkg, the Rust package manager and build system.

  3. Read the tutorial.

  4. Enjoy!

Notes

Since the Rust compiler is written in Rust, it must be built by a precompiled "snapshot" version of itself (made in an earlier state of development). As such, source builds require a connection to the Internet, to fetch snapshots, and an OS that can execute the available snapshot binaries.

Snapshot binaries are currently built and tested on several platforms:

  • Windows (7, Server 2008 R2), x86 only
  • Linux (various distributions), x86 and x86-64
  • OSX 10.6 ("Snow Leopard") or greater, x86 and x86-64

You may find that other platforms work, but these are our "tier 1" supported build environments that are most likely to work.

Rust currently needs about 1.8G of RAM to build without swapping; if it hits swap, it will take a very long time to build.

There is lots more documentation in the wiki.

License

Rust is primarily distributed under the terms of both the MIT license and the Apache License (Version 2.0), with portions covered by various BSD-like licenses.

See LICENSE-APACHE, LICENSE-MIT, and COPYRIGHT for details.