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www/hacking.html: Cosmetic change, to detabify, eliminate whitespace, and add proper slashes to URL. 

llvm-svn: 127862
This commit is contained in:
NAKAMURA Takumi 2011-03-18 03:21:38 +00:00
parent f5606922f8
commit 6048f80b1a
1 changed files with 36 additions and 36 deletions
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@ -1,4 +1,4 @@
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"
"http://www.w3.org/TR/html4/strict.dtd">
<!-- Material used from: HTML 4.01 specs: http://www.w3.org/TR/html401/ -->
<html>
@ -14,7 +14,7 @@
<!--*********************************************************************-->
<h1>Hacking on Clang</h1>
<!--*********************************************************************-->
<p>This document provides some hints for how to get started hacking
on Clang for developers who are new to the Clang and/or LLVM
codebases.</p>
@ -24,18 +24,18 @@
<li><a href="#debugging">Debugging</a></li>
<li><a href="#testing">Testing</a></li>
<ul>
<li><a href="#testingNonWindows">Testing on Unix-like Systems</a></li>
<li><a href="#testingWindows">Testing using Visual Studio on Windows</a></li>
<li><a href="#testingCommands">Testing on the Command Line</a></li>
</ul>
<li><a href="#testingNonWindows">Testing on Unix-like Systems</a></li>
<li><a href="#testingWindows">Testing using Visual Studio on Windows</a></li>
<li><a href="#testingCommands">Testing on the Command Line</a></li>
</ul>
<li><a href="#patches">Creating Patch Files</a></li>
<li><a href="#irgen">LLVM IR Generation</a></li>
</ul>
<!--=====================================================================-->
<h2 id="docs">Coding Standards</h2>
<!--=====================================================================-->
<p>Clang follows the
LLVM <a href="http://llvm.org/docs/CodingStandards.html">Coding
Standards</a>. When submitting patches, please take care to follow these standards
@ -56,14 +56,14 @@
<!--=====================================================================-->
<h2 id="docs">Developer Documentation</h2>
<!--=====================================================================-->
<p>Both Clang and LLVM use doxygen to provide API documentation. Their
respective web pages (generated nightly) are here:</p>
<ul>
<li><a href="http://clang.llvm.org/doxygen">Clang</a></li>
<li><a href="http://llvm.org/doxygen">LLVM</a></li>
</ul>
<p>For work on the LLVM IR generation, the LLVM assembly language
<a href="http://llvm.org/docs/LangRef.html">reference manual</a> is
also useful.</p>
@ -71,7 +71,7 @@
<!--=====================================================================-->
<h2 id="debugging">Debugging</h2>
<!--=====================================================================-->
<p>Inspecting data structures in a debugger:</p>
<ul>
<li>Many LLVM and Clang data structures provide
@ -84,18 +84,18 @@
qualifiers, and the <tt>getTypePtr()</tt> method to get the
wrapped <tt>Type*</tt> which you can then dump.</li>
</ul>
<!--=====================================================================-->
<h2 id="testing">Testing</h2>
<!--=====================================================================-->
<p><i>[Note: The test running mechanism is currently under revision, so the
following might change shortly.]</i></p>
<!--=====================================================================-->
<h3 id="testingNonWindows">Testing on Unix-like Systems</h3>
<!--=====================================================================-->
<p>Clang includes a basic regression suite in the tree which can be
run with <tt>make test</tt> from the top-level clang directory, or
just <tt>make</tt> in the <em>test</em> sub-directory.
@ -113,15 +113,15 @@
the test runner that an error is expected at the current line.
Any output files produced by the test will be placed under
a created Output directory.</p>
<p>During the run of <tt>make test</tt>, the terminal output will
display a line similar to the following:</p>
<ul><tt>--- Running clang tests for i686-pc-linux-gnu ---</tt></ul>
<p>followed by a line continually overwritten with the current test
file being compiled, and an overall completion percentage.</p>
<p>After the <tt>make test</tt> run completes, the absence of any
<tt>Failing Tests (count):</tt> message indicates that no tests
failed unexpectedly. If any tests did fail, the
@ -148,38 +148,38 @@
override LLVMGCC, as in: <tt>make LLVMGCC="clang -std=gnu89"
TEST=nightly report</tt> (make sure <tt>clang</tt> is in your PATH or use the
full path).</p>
<!--=====================================================================-->
<h3 id="testingWindows">Testing using Visual Studio on Windows</h3>
<!--=====================================================================-->
<p>The Clang test suite can be run from either Visual Studio or
the command line.</p>
<p>Note that the test runner is based on
Python, which must be installed. Find Python at:
<a href="http://www.python.org/download">http://www.python.org/download</a>.
<a href="http://www.python.org/download/">http://www.python.org/download/</a>.
Download the latest stable version (2.6.2 at the time of this writing).</p>
<p>The GnuWin32 tools are also necessary for running the tests.
(Note that the grep from MSYS or Cygwin doesn't work with the tests
because of embedded double-quotes in the search strings. The GNU
grep does work in this case.)
Get them from <a href="http://getgnuwin32.sourceforge.net">
http://getgnuwin32.sourceforge.net</a>.</p>
Get them from <a href="http://getgnuwin32.sourceforge.net/">
http://getgnuwin32.sourceforge.net/</a>.</p>
<p>The cmake build tool is set up to create Visual Studio project files
for running the tests, "clang-test" being the root. Therefore, to
run the test from Visual Studio, right-click the clang-test project
and select "Build".</p>
<!--=====================================================================-->
<h3 id="testingCommands">Testing on the Command Line</h3>
<!--=====================================================================-->
<p>To run all the tests from the command line, execute a command like
the following:</p>
<tt>
python (path to llvm)/llvm/utils/lit/lit.py -sv --no-progress-bar
(path to llvm)/llvm/tools/clang/test
@ -190,14 +190,14 @@
<tt>--param=build_config=(build config)</tt>.</p>
<p>To run a single test:</p>
<tt>
python (path to llvm)/llvm/utils/lit/lit.py -sv --no-progress-bar
(path to llvm)/llvm/tools/clang/test/(dir)/(test)
</tt>
<p>For example:</p>
<tt>
python C:/Tools/llvm/utils/lit/lit.py -sv --no-progress-bar
C:/Tools/llvm/tools/clang/test/Sema/wchar.c
@ -215,7 +215,7 @@ Testing Time: 81.52s
Expected Passes : 2503
Expected Failures : 28
Unsupported Tests : 3
</pre></tt>
</pre></tt>
<p>The statistic, "Unexpected Failures" (not shown if all tests pass), is the important one.</p>
@ -230,18 +230,18 @@ Testing Time: 81.52s
you are doing, such as if you are new to Clang development, you can use
the cfe-dev mailing list also.
</p>
<p>To create these patch files, change directory
to the llvm/tools/clang root and run:</p>
<ul><tt>svn diff (relative path) >(patch file name)</tt></ul>
<p>For example, for getting the diffs of all of clang:</p>
<ul><tt>svn diff . >~/mypatchfile.patch</tt></ul>
<p>For example, for getting the diffs of a single file:</p>
<ul><tt>svn diff lib/Parse/ParseDeclCXX.cpp >~/ParseDeclCXX.patch</tt></ul>
<p>Note that the paths embedded in the patch depend on where you run it,
@ -256,7 +256,7 @@ Testing Time: 81.52s
Representation (IR). Historically, this was referred to as
"codegen", and the Clang code for this lives
in <tt>lib/CodeGen</tt>.</p>
<p>The output is most easily inspected using the <tt>-emit-llvm</tt>
option to clang (possibly in conjunction with <tt>-o -</tt>). You
can also use <tt>-emit-llvm-bc</tt> to write an LLVM bitcode file