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John Criswell	020cbd8	2003-10-10 18:42:49 +0000	[diff] [blame]	3	<html>
Brian Gaeke	af19f2e	2003-10-23 18:10:28 +0000	[diff] [blame]	4	<head>
Matthijs Kooijman	31ce08f	2008-06-24 12:58:31 +0000	[diff] [blame]	5	<title>LLVM Testing Infrastructure Guide</title>
Misha Brukman	1d83e11	2004-03-01 18:21:04 +0000	[diff] [blame]	6	<link rel="stylesheet" href="llvm.css" type="text/css">
Brian Gaeke	af19f2e	2003-10-23 18:10:28 +0000	[diff] [blame]	7	</head>
Brian Gaeke	af19f2e	2003-10-23 18:10:28 +0000	[diff] [blame]	8	<body>
				9
				10	<div class="doc_title">
Matthijs Kooijman	31ce08f	2008-06-24 12:58:31 +0000	[diff] [blame]	11	LLVM Testing Infrastructure Guide
Brian Gaeke	af19f2e	2003-10-23 18:10:28 +0000	[diff] [blame]	12	</div>
John Criswell	020cbd8	2003-10-10 18:42:49 +0000	[diff] [blame]	13
Brian Gaeke	af19f2e	2003-10-23 18:10:28 +0000	[diff] [blame]	14	<ol>
Reid Spencer	820e247	2004-11-01 08:30:14 +0000	[diff] [blame]	15	<li><a href="#overview">Overview</a></li>
Matthijs Kooijman	31ce08f	2008-06-24 12:58:31 +0000	[diff] [blame]	16	<li><a href="#requirements">Requirements</a></li>
				17	<li><a href="#org">LLVM testing infrastructure organization</a>
Reid Spencer	820e247	2004-11-01 08:30:14 +0000	[diff] [blame]	18	<ul>
Matthijs Kooijman	31ce08f	2008-06-24 12:58:31 +0000	[diff] [blame]	19	<li><a href="#dejagnu">DejaGNU tests</a></li>
				20	<li><a href="#testsuite">Test suite</a></li>
Reid Spencer	820e247	2004-11-01 08:30:14 +0000	[diff] [blame]	21	</ul>
				22	</li>
Matthijs Kooijman	31ce08f	2008-06-24 12:58:31 +0000	[diff] [blame]	23	<li><a href="#quick">Quick start</a>
Chris Lattner	eb82da8	2006-05-23 01:40:20 +0000	[diff] [blame]	24	<ul>
Matthijs Kooijman	6fce844	2008-05-23 11:45:18 +0000	[diff] [blame]	25	<li><a href="#quickdejagnu">DejaGNU tests</a></li>
Matthijs Kooijman	31ce08f	2008-06-24 12:58:31 +0000	[diff] [blame]	26	<li><a href="#quicktestsuite">Test suite</a></li>
Matthijs Kooijman	6fce844	2008-05-23 11:45:18 +0000	[diff] [blame]	27	</ul>
				28	</li>
Matthijs Kooijman	31ce08f	2008-06-24 12:58:31 +0000	[diff] [blame]	29	<li><a href="#dgstructure">DejaGNU structure</a>
Matthijs Kooijman	6fce844	2008-05-23 11:45:18 +0000	[diff] [blame]	30	<ul>
Matthijs Kooijman	31ce08f	2008-06-24 12:58:31 +0000	[diff] [blame]	31	<li><a href="#dgcustom">Writing new DejaGNU tests</a></li>
Matthijs Kooijman	6fce844	2008-05-23 11:45:18 +0000	[diff] [blame]	32	<li><a href="#dgvars">Variables and substitutions</a></li>
				33	<li><a href="#dgfeatures">Other features</a></li>
				34	</ul>
				35	</li>
Matthijs Kooijman	31ce08f	2008-06-24 12:58:31 +0000	[diff] [blame]	36	<li><a href="#testsuitestructure">Test suite structure</a></li>
				37	<li><a href="#testsuiterun">Running the test suite</a>
Matthijs Kooijman	6fce844	2008-05-23 11:45:18 +0000	[diff] [blame]	38	<ul>
Matthijs Kooijman	31ce08f	2008-06-24 12:58:31 +0000	[diff] [blame]	39	<li><a href="#testsuiteexternal">Configuring external tests</a></li>
				40	<li><a href="#testsuitetests">Running different tests</a></li>
				41	<li><a href="#testsuiteoutput">Generating test output</a></li>
				42	<li><a href="#testsuitecustom">Writing custom tests for llvm-test</a></li>
Matthijs Kooijman	6fce844	2008-05-23 11:45:18 +0000	[diff] [blame]	43	</ul>
Chris Lattner	eb82da8	2006-05-23 01:40:20 +0000	[diff] [blame]	44	</li>
Reid Spencer	820e247	2004-11-01 08:30:14 +0000	[diff] [blame]	45	<li><a href="#nightly">Running the nightly tester</a></li>
Brian Gaeke	af19f2e	2003-10-23 18:10:28 +0000	[diff] [blame]	46	</ol>
John Criswell	020cbd8	2003-10-10 18:42:49 +0000	[diff] [blame]	47
Chris Lattner	7911ce2	2004-05-23 21:07:27 +0000	[diff] [blame]	48	<div class="doc_author">
Tanya Lattner	5026c7f	2004-12-06 02:11:52 +0000	[diff] [blame]	49	<p>Written by John T. Criswell, <a
				50	href="http://llvm.x10sys.com/rspencer">Reid Spencer</a>, and Tanya Lattner</p>
Chris Lattner	7911ce2	2004-05-23 21:07:27 +0000	[diff] [blame]	51	</div>
John Criswell	020cbd8	2003-10-10 18:42:49 +0000	[diff] [blame]	52
Reid Spencer	8284f1f	2004-09-05 20:07:26 +0000	[diff] [blame]	53	<!--=========================================================================-->
Misha Brukman	1d83e11	2004-03-01 18:21:04 +0000	[diff] [blame]	54	<div class="doc_section"><a name="overview">Overview</a></div>
Reid Spencer	8284f1f	2004-09-05 20:07:26 +0000	[diff] [blame]	55	<!--=========================================================================-->
John Criswell	020cbd8	2003-10-10 18:42:49 +0000	[diff] [blame]	56
Misha Brukman	1d83e11	2004-03-01 18:21:04 +0000	[diff] [blame]	57	<div class="doc_text">
John Criswell	020cbd8	2003-10-10 18:42:49 +0000	[diff] [blame]	58
Matthijs Kooijman	31ce08f	2008-06-24 12:58:31 +0000	[diff] [blame]	59	<p>This document is the reference manual for the LLVM testing infrastructure. It documents
				60	the structure of the LLVM testing infrastructure, the tools needed to use it,
				61	and how to add and run tests.</p>
John Criswell	020cbd8	2003-10-10 18:42:49 +0000	[diff] [blame]	62
Misha Brukman	1d83e11	2004-03-01 18:21:04 +0000	[diff] [blame]	63	</div>
John Criswell	020cbd8	2003-10-10 18:42:49 +0000	[diff] [blame]	64
Reid Spencer	8284f1f	2004-09-05 20:07:26 +0000	[diff] [blame]	65	<!--=========================================================================-->
Matthijs Kooijman	31ce08f	2008-06-24 12:58:31 +0000	[diff] [blame]	66	<div class="doc_section"><a name="requirements">Requirements</a></div>
Reid Spencer	8284f1f	2004-09-05 20:07:26 +0000	[diff] [blame]	67	<!--=========================================================================-->
John Criswell	020cbd8	2003-10-10 18:42:49 +0000	[diff] [blame]	68
Misha Brukman	1d83e11	2004-03-01 18:21:04 +0000	[diff] [blame]	69	<div class="doc_text">
John Criswell	020cbd8	2003-10-10 18:42:49 +0000	[diff] [blame]	70
Matthijs Kooijman	31ce08f	2008-06-24 12:58:31 +0000	[diff] [blame]	71	<p>In order to use the LLVM testing infrastructure, you will need all of the software
Misha Brukman	1d83e11	2004-03-01 18:21:04 +0000	[diff] [blame]	72	required to build LLVM, plus the following:</p>
John Criswell	020cbd8	2003-10-10 18:42:49 +0000	[diff] [blame]	73
Misha Brukman	1d83e11	2004-03-01 18:21:04 +0000	[diff] [blame]	74	<dl>
Tanya Lattner	5026c7f	2004-12-06 02:11:52 +0000	[diff] [blame]	75	<dt><a href="http://www.gnu.org/software/dejagnu/">DejaGNU</a></dt>
				76	<dd>The Feature and Regressions tests are organized and run by DejaGNU.</dd>
				77	<dt><a href="http://expect.nist.gov/">Expect</a></dt>
				78	<dd>Expect is required by DejaGNU.</dd>
Tanya Lattner	cc85da0	2004-12-08 17:35:31 +0000	[diff] [blame]	79	<dt><a href="http://www.tcl.tk/software/tcltk/">tcl</a></dt>
				80	<dd>Tcl is required by DejaGNU. </dd>
John Criswell	020cbd8	2003-10-10 18:42:49 +0000	[diff] [blame]	81
Misha Brukman	0adfeed	2004-10-08 00:55:43 +0000	[diff] [blame]	82	<ul>
				83	<li><tt>./configure --with-f2c=$DIR</tt><br>
				84	This will specify a new <tt>$DIR</tt> for the above-described search
				85	process. This will only work if the binary, header, and library are in their
				86	respective subdirectories of <tt>$DIR</tt>.</li>
				87
				88	<li><tt>./configure --with-f2c-bin=/binary/path --with-f2c-inc=/include/path
				89	--with-f2c-lib=/lib/path</tt><br>
				90	This allows you to specify the F2C components separately. Note: if you choose
				91	this route, you MUST specify all three components, and you need to only specify
				92	<em>directories</em> where the files are located; do NOT include the
				93	filenames themselves on the <tt>configure</tt> line.</li>
				94	</ul></dd>
				95	</dl>
Jim Laskey	a2dee01	2006-03-27 18:41:06 +0000	[diff] [blame]	96
Jim Laskey	5f4eaa5	2006-03-27 19:33:35 +0000	[diff] [blame]	97	<p>Darwin (Mac OS X) developers can simplify the installation of Expect and tcl
				98	by using fink. <tt>fink install expect</tt> will install both. Alternatively,
Jim Laskey	30c495e	2006-03-27 19:46:38 +0000	[diff] [blame]	99	Darwinports users can use <tt>sudo port install expect</tt> to install Expect
				100	and tcl.</p>
Jim Laskey	f8e78f0	2006-03-27 19:09:44 +0000	[diff] [blame]	101
Misha Brukman	1d83e11	2004-03-01 18:21:04 +0000	[diff] [blame]	102	</div>
John Criswell	020cbd8	2003-10-10 18:42:49 +0000	[diff] [blame]	103
Reid Spencer	8284f1f	2004-09-05 20:07:26 +0000	[diff] [blame]	104	<!--=========================================================================-->
Matthijs Kooijman	31ce08f	2008-06-24 12:58:31 +0000	[diff] [blame]	105	<div class="doc_section"><a name="org">LLVM testing infrastructure organization</a></div>
Matthijs Kooijman	6fce844	2008-05-23 11:45:18 +0000	[diff] [blame]	106	<!--=========================================================================-->
				107
				108	<div class="doc_text">
				109
Matthijs Kooijman	31ce08f	2008-06-24 12:58:31 +0000	[diff] [blame]	110	<p>The LLVM testing infrastructure contains two major categories of tests: code
				111	fragments and whole programs. Code fragments are referred to as the "DejaGNU
				112	tests" and are in the <tt>llvm</tt> module in subversion under the
				113	<tt>llvm/test</tt> directory. The whole programs tests are referred to as the
				114	"Test suite" and are in the <tt>test-suite</tt> module in subversion.
				115	</p>
Matthijs Kooijman	6fce844	2008-05-23 11:45:18 +0000	[diff] [blame]	116
				117	</div>
				118
				119	<!-- _______________________________________________________________________ -->
Matthijs Kooijman	31ce08f	2008-06-24 12:58:31 +0000	[diff] [blame]	120	<div class="doc_subsection"><a name="dejagnu">DejaGNU tests</a></div>
Matthijs Kooijman	6fce844	2008-05-23 11:45:18 +0000	[diff] [blame]	121	<!-- _______________________________________________________________________ -->
				122
				123	<div class="doc_text">
				124
				125	<p>Code fragments are small pieces of code that test a specific feature of LLVM
				126	or trigger a specific bug in LLVM. They are usually written in LLVM assembly
				127	language, but can be written in other languages if the test targets a particular
				128	language front end. These tests are driven by the DejaGNU testing framework,
				129	which is hidden behind a few simple makefiles.</p>
				130
				131	<p>These code fragments are not complete programs. The code generated from them is
				132	never executed to determine correct behavior.</p>
				133
				134	<p>These code fragment tests are located in the <tt>llvm/test</tt>
				135	directory.</p>
				136
				137	<p>Typically when a bug is found in LLVM, a regression test containing
				138	just enough code to reproduce the problem should be written and placed
				139	somewhere underneath this directory. In most cases, this will be a small
				140	piece of LLVM assembly language code, often distilled from an actual
				141	application or benchmark.</p>
				142
				143	</div>
				144
				145	<!-- _______________________________________________________________________ -->
Matthijs Kooijman	31ce08f	2008-06-24 12:58:31 +0000	[diff] [blame]	146	<div class="doc_subsection"><a name="testsuite">Test suite</a></div>
Matthijs Kooijman	6fce844	2008-05-23 11:45:18 +0000	[diff] [blame]	147	<!-- _______________________________________________________________________ -->
				148
				149	<div class="doc_text">
				150
Matthijs Kooijman	31ce08f	2008-06-24 12:58:31 +0000	[diff] [blame]	151	<p>The test suite contains whole programs, which are pieces of
Matthijs Kooijman	6fce844	2008-05-23 11:45:18 +0000	[diff] [blame]	152	code which can be compiled and linked into a stand-alone program that can be
				153	executed. These programs are generally written in high level languages such as
				154	C or C++, but sometimes they are written straight in LLVM assembly.</p>
				155
				156	<p>These programs are compiled and then executed using several different
				157	methods (native compiler, LLVM C backend, LLVM JIT, LLVM native code generation,
				158	etc). The output of these programs is compared to ensure that LLVM is compiling
				159	the program correctly.</p>
				160
				161	<p>In addition to compiling and executing programs, whole program tests serve as
				162	a way of benchmarking LLVM performance, both in terms of the efficiency of the
				163	programs generated as well as the speed with which LLVM compiles, optimizes, and
				164	generates code.</p>
				165
Matthijs Kooijman	31ce08f	2008-06-24 12:58:31 +0000	[diff] [blame]	166	<p>The test-suite is located in the <tt>test-suite</tt> Subversion module.</p>
Matthijs Kooijman	6fce844	2008-05-23 11:45:18 +0000	[diff] [blame]	167
				168	</div>
				169
				170	<!--=========================================================================-->
Matthijs Kooijman	31ce08f	2008-06-24 12:58:31 +0000	[diff] [blame]	171	<div class="doc_section"><a name="quick">Quick start</a></div>
Reid Spencer	8284f1f	2004-09-05 20:07:26 +0000	[diff] [blame]	172	<!--=========================================================================-->
John Criswell	020cbd8	2003-10-10 18:42:49 +0000	[diff] [blame]	173
Misha Brukman	1d83e11	2004-03-01 18:21:04 +0000	[diff] [blame]	174	<div class="doc_text">
Brian Gaeke	af19f2e	2003-10-23 18:10:28 +0000	[diff] [blame]	175
Matthijs Kooijman	31ce08f	2008-06-24 12:58:31 +0000	[diff] [blame]	176	<p>The tests are located in two separate Subversion modules. The
Matthijs Kooijman	6fce844	2008-05-23 11:45:18 +0000	[diff] [blame]	177	DejaGNU tests are in the main "llvm" module under the directory
				178	<tt>llvm/test</tt> (so you get these tests for free with the main llvm tree).
Matthijs Kooijman	31ce08f	2008-06-24 12:58:31 +0000	[diff] [blame]	179	The more comprehensive test suite that includes whole
				180	programs in C and C++ is in the <tt>test-suite</tt> module. This module should
				181	be checked out to the <tt>llvm/projects</tt> directory (don't use another name
				182	then the default "test-suite", for then the test suite will be run every time
				183	you run <tt>make</tt> in the main <tt>llvm</tt> directory).
Matthijs Kooijman	6fce844	2008-05-23 11:45:18 +0000	[diff] [blame]	184	When you <tt>configure</tt> the <tt>llvm</tt> module,
Matthijs Kooijman	31ce08f	2008-06-24 12:58:31 +0000	[diff] [blame]	185	the <tt>test-suite</tt> directory will be automatically configured.
Reid Spencer	669ed45	2007-07-09 08:04:31 +0000	[diff] [blame]	186	Alternatively, you can configure the <tt>test-suite</tt> module manually.</p>
Matthijs Kooijman	6fce844	2008-05-23 11:45:18 +0000	[diff] [blame]	187
				188	<!-- _______________________________________________________________________ -->
				189	<div class="doc_subsection"><a name="quickdejagnu">DejaGNU tests</a></div>
				190	<!-- _______________________________________________________________________ -->
Chris Lattner	792321a	2006-05-23 01:25:11 +0000	[diff] [blame]	191	<p>To run all of the simple tests in LLVM using DejaGNU, use the master Makefile
				192	in the <tt>llvm/test</tt> directory:</p>
Bill Wendling	da51c4c	2007-09-22 09:16:44 +0000	[diff] [blame]	193
				194	<div class="doc_code">
Misha Brukman	1d83e11	2004-03-01 18:21:04 +0000	[diff] [blame]	195	<pre>
Reid Spencer	8284f1f	2004-09-05 20:07:26 +0000	[diff] [blame]	196	% gmake -C llvm/test
Misha Brukman	1d83e11	2004-03-01 18:21:04 +0000	[diff] [blame]	197	</pre>
Bill Wendling	da51c4c	2007-09-22 09:16:44 +0000	[diff] [blame]	198	</div>
				199
				200	<p>or</p>
				201
				202	<div class="doc_code">
Tanya Lattner	5026c7f	2004-12-06 02:11:52 +0000	[diff] [blame]	203	<pre>
				204	% gmake check
				205	</pre>
Bill Wendling	da51c4c	2007-09-22 09:16:44 +0000	[diff] [blame]	206	</div>
John Criswell	0c8a9a1	2005-05-13 20:25:49 +0000	[diff] [blame]	207
Matthijs Kooijman	31ce08f	2008-06-24 12:58:31 +0000	[diff] [blame]	208	<p>To run only a subdirectory of tests in <tt>llvm/test</tt> using DejaGNU (ie.
				209	Transforms), just set the TESTSUITE variable to the path of the
John Criswell	0c8a9a1	2005-05-13 20:25:49 +0000	[diff] [blame]	210	subdirectory (relative to <tt>llvm/test</tt>):</p>
Bill Wendling	da51c4c	2007-09-22 09:16:44 +0000	[diff] [blame]	211
				212	<div class="doc_code">
Tanya Lattner	5026c7f	2004-12-06 02:11:52 +0000	[diff] [blame]	213	<pre>
Matthijs Kooijman	6fce844	2008-05-23 11:45:18 +0000	[diff] [blame]	214	% gmake TESTSUITE=Transforms check
Tanya Lattner	5026c7f	2004-12-06 02:11:52 +0000	[diff] [blame]	215	</pre>
Bill Wendling	da51c4c	2007-09-22 09:16:44 +0000	[diff] [blame]	216	</div>
Misha Brukman	fc1a27b	2005-03-10 22:51:59 +0000	[diff] [blame]	217
John Criswell	0c8a9a1	2005-05-13 20:25:49 +0000	[diff] [blame]	218	<p><b>Note: If you are running the tests with <tt>objdir != subdir</tt>, you
				219	must have run the complete testsuite before you can specify a
				220	subdirectory.</b></p>
John Criswell	020cbd8	2003-10-10 18:42:49 +0000	[diff] [blame]	221
Matthijs Kooijman	31ce08f	2008-06-24 12:58:31 +0000	[diff] [blame]	222	<p>To run only a single test, set <tt>TESTONE</tt> to its path (relative to
				223	<tt>llvm/test</tt>) and make the <tt>check-one</tt> target:</p>
Matthijs Kooijman	6fce844	2008-05-23 11:45:18 +0000	[diff] [blame]	224
				225	<div class="doc_code">
				226	<pre>
				227	% gmake TESTONE=Feature/basictest.ll check-one
				228	</pre>
				229	</div>
				230
Nuno Lopes	21bfe0b	2008-11-25 15:57:52 +0000	[diff] [blame]	231	<p>To run the tests with Valgrind (Memcheck by default), just append
				232	<tt>VG=1</tt> to the commands above, e.g.:</p>
				233
				234	<div class="doc_code">
				235	<pre>
				236	% gmake check VG=1
				237	</pre>
				238	</div>
				239
Matthijs Kooijman	6fce844	2008-05-23 11:45:18 +0000	[diff] [blame]	240	<!-- _______________________________________________________________________ -->
Matthijs Kooijman	31ce08f	2008-06-24 12:58:31 +0000	[diff] [blame]	241	<div class="doc_subsection"><a name="quicktestsuite">Test suite</a></div>
Matthijs Kooijman	6fce844	2008-05-23 11:45:18 +0000	[diff] [blame]	242	<!-- _______________________________________________________________________ -->
				243
Reid Spencer	8284f1f	2004-09-05 20:07:26 +0000	[diff] [blame]	244	<p>To run the comprehensive test suite (tests that compile and execute whole
Matthijs Kooijman	6fce844	2008-05-23 11:45:18 +0000	[diff] [blame]	245	programs), first checkout and setup the <tt>test-suite</tt> module:</p>
John Criswell	020cbd8	2003-10-10 18:42:49 +0000	[diff] [blame]	246
Bill Wendling	da51c4c	2007-09-22 09:16:44 +0000	[diff] [blame]	247	<div class="doc_code">
Misha Brukman	1d83e11	2004-03-01 18:21:04 +0000	[diff] [blame]	248	<pre>
Reid Spencer	8284f1f	2004-09-05 20:07:26 +0000	[diff] [blame]	249	% cd llvm/projects
Matthijs Kooijman	31ce08f	2008-06-24 12:58:31 +0000	[diff] [blame]	250	% svn co http://llvm.org/svn/llvm-project/test-suite/trunk test-suite
Tanya Lattner	1de4849	2007-11-28 05:13:45 +0000	[diff] [blame]	251	% cd ..
				252	% ./configure --with-llvmgccdir=$LLVM_GCC_DIR
Misha Brukman	1d83e11	2004-03-01 18:21:04 +0000	[diff] [blame]	253	</pre>
Matthijs Kooijman	d30020a	2008-05-20 10:28:55 +0000	[diff] [blame]	254	<p>where <tt>$LLVM_GCC_DIR</tt> is the directory where you <em>installed</em>
				255	llvm-gcc, not it's src or obj dir.</p>
Bill Wendling	da51c4c	2007-09-22 09:16:44 +0000	[diff] [blame]	256	</div>
Misha Brukman	1d83e11	2004-03-01 18:21:04 +0000	[diff] [blame]	257
Matthijs Kooijman	31ce08f	2008-06-24 12:58:31 +0000	[diff] [blame]	258	<p>Then, run the entire test suite by running make in the <tt>test-suite</tt>
Matthijs Kooijman	6fce844	2008-05-23 11:45:18 +0000	[diff] [blame]	259	directory:</p>
				260
				261	<div class="doc_code">
				262	<pre>
Matthijs Kooijman	31ce08f	2008-06-24 12:58:31 +0000	[diff] [blame]	263	% cd projects/test-suite
Matthijs Kooijman	6fce844	2008-05-23 11:45:18 +0000	[diff] [blame]	264	% gmake
				265	</pre>
Misha Brukman	1d83e11	2004-03-01 18:21:04 +0000	[diff] [blame]	266	</div>
				267
Matthijs Kooijman	6fce844	2008-05-23 11:45:18 +0000	[diff] [blame]	268	<p>Usually, running the "nightly" set of tests is a good idea, and you can also
				269	let it generate a report by running:</p>
Misha Brukman	1d83e11	2004-03-01 18:21:04 +0000	[diff] [blame]	270
Matthijs Kooijman	6fce844	2008-05-23 11:45:18 +0000	[diff] [blame]	271	<div class="doc_code">
				272	<pre>
Matthijs Kooijman	31ce08f	2008-06-24 12:58:31 +0000	[diff] [blame]	273	% cd projects/test-suite
Matthijs Kooijman	6fce844	2008-05-23 11:45:18 +0000	[diff] [blame]	274	% gmake TEST=nightly report report.html
				275	</pre>
Misha Brukman	1d83e11	2004-03-01 18:21:04 +0000	[diff] [blame]	276	</div>
				277
Matthijs Kooijman	6fce844	2008-05-23 11:45:18 +0000	[diff] [blame]	278	<p>Any of the above commands can also be run in a subdirectory of
Matthijs Kooijman	31ce08f	2008-06-24 12:58:31 +0000	[diff] [blame]	279	<tt>projects/test-suite</tt> to run the specified test only on the programs in
Matthijs Kooijman	6fce844	2008-05-23 11:45:18 +0000	[diff] [blame]	280	that subdirectory.</p>
Misha Brukman	1d83e11	2004-03-01 18:21:04 +0000	[diff] [blame]	281
				282	</div>
				283
Reid Spencer	8284f1f	2004-09-05 20:07:26 +0000	[diff] [blame]	284	<!--=========================================================================-->
Matthijs Kooijman	31ce08f	2008-06-24 12:58:31 +0000	[diff] [blame]	285	<div class="doc_section"><a name="dgstructure">DejaGNU structure</a></div>
Reid Spencer	8284f1f	2004-09-05 20:07:26 +0000	[diff] [blame]	286	<!--=========================================================================-->
Misha Brukman	1d83e11	2004-03-01 18:21:04 +0000	[diff] [blame]	287	<div class="doc_text">
Matthijs Kooijman	6fce844	2008-05-23 11:45:18 +0000	[diff] [blame]	288	<p>The LLVM DejaGNU tests are driven by DejaGNU together with GNU Make and are
				289	located in the <tt>llvm/test</tt> directory.
Misha Brukman	1d83e11	2004-03-01 18:21:04 +0000	[diff] [blame]	290
Reid Spencer	a99256e	2007-02-08 17:00:55 +0000	[diff] [blame]	291	<p>This directory contains a large array of small tests
				292	that exercise various features of LLVM and to ensure that regressions do not
				293	occur. The directory is broken into several sub-directories, each focused on
Bill Wendling	eb6aace	2007-09-22 09:20:07 +0000	[diff] [blame]	294	a particular area of LLVM. A few of the important ones are:</p>
Matthijs Kooijman	6fce844	2008-05-23 11:45:18 +0000	[diff] [blame]	295
Bill Wendling	eb6aace	2007-09-22 09:20:07 +0000	[diff] [blame]	296	<ul>
Reid Spencer	a99256e	2007-02-08 17:00:55 +0000	[diff] [blame]	297	<li><tt>Analysis</tt>: checks Analysis passes.</li>
				298	<li><tt>Archive</tt>: checks the Archive library.</li>
				299	<li><tt>Assembler</tt>: checks Assembly reader/writer functionality.</li>
Gabor Greif	04367bf	2007-07-06 22:07:22 +0000	[diff] [blame]	300	<li><tt>Bitcode</tt>: checks Bitcode reader/writer functionality.</li>
Reid Spencer	a99256e	2007-02-08 17:00:55 +0000	[diff] [blame]	301	<li><tt>CodeGen</tt>: checks code generation and each target.</li>
				302	<li><tt>Features</tt>: checks various features of the LLVM language.</li>
Gabor Greif	04367bf	2007-07-06 22:07:22 +0000	[diff] [blame]	303	<li><tt>Linker</tt>: tests bitcode linking.</li>
Reid Spencer	a99256e	2007-02-08 17:00:55 +0000	[diff] [blame]	304	<li><tt>Transforms</tt>: tests each of the scalar, IPO, and utility
				305	transforms to ensure they make the right transformations.</li>
				306	<li><tt>Verifier</tt>: tests the IR verifier.</li>
Bill Wendling	eb6aace	2007-09-22 09:20:07 +0000	[diff] [blame]	307	</ul>
Brian Gaeke	af19f2e	2003-10-23 18:10:28 +0000	[diff] [blame]	308
Misha Brukman	1d83e11	2004-03-01 18:21:04 +0000	[diff] [blame]	309	</div>
Tanya Lattner	5026c7f	2004-12-06 02:11:52 +0000	[diff] [blame]	310
Matthijs Kooijman	6fce844	2008-05-23 11:45:18 +0000	[diff] [blame]	311	<!-- _______________________________________________________________________ -->
Matthijs Kooijman	31ce08f	2008-06-24 12:58:31 +0000	[diff] [blame]	312	<div class="doc_subsection"><a name="dgcustom">Writing new DejaGNU tests</a></div>
Matthijs Kooijman	6fce844	2008-05-23 11:45:18 +0000	[diff] [blame]	313	<!-- _______________________________________________________________________ -->
				314	<div class="doc_text">
Reid Spencer	bbb2a7a	2007-04-14 21:46:15 +0000	[diff] [blame]	315	<p>The DejaGNU structure is very simple, but does require some information to
				316	be set. This information is gathered via <tt>configure</tt> and is written
				317	to a file, <tt>site.exp</tt> in <tt>llvm/test</tt>. The <tt>llvm/test</tt>
				318	Makefile does this work for you.</p>
Tanya Lattner	5026c7f	2004-12-06 02:11:52 +0000	[diff] [blame]	319
Reid Spencer	bbb2a7a	2007-04-14 21:46:15 +0000	[diff] [blame]	320	<p>In order for DejaGNU to work, each directory of tests must have a
				321	<tt>dg.exp</tt> file. DejaGNU looks for this file to determine how to run the
				322	tests. This file is just a Tcl script and it can do anything you want, but
Matthijs Kooijman	6fce844	2008-05-23 11:45:18 +0000	[diff] [blame]	323	we've standardized it for the LLVM regression tests. If you're adding a
				324	directory of tests, just copy <tt>dg.exp</tt> from another directory to get
				325	running. The standard <tt>dg.exp</tt> simply loads a Tcl
Reid Spencer	bbb2a7a	2007-04-14 21:46:15 +0000	[diff] [blame]	326	library (<tt>test/lib/llvm.exp</tt>) and calls the <tt>llvm_runtests</tt>
				327	function defined in that library with a list of file names to run. The names
				328	are obtained by using Tcl's glob command. Any directory that contains only
				329	directories does not need the <tt>dg.exp</tt> file.</p>
Tanya Lattner	5026c7f	2004-12-06 02:11:52 +0000	[diff] [blame]	330
Reid Spencer	bbb2a7a	2007-04-14 21:46:15 +0000	[diff] [blame]	331	<p>The <tt>llvm-runtests</tt> function lookas at each file that is passed to
				332	it and gathers any lines together that match "RUN:". This are the "RUN" lines
				333	that specify how the test is to be run. So, each test script must contain
				334	RUN lines if it is to do anything. If there are no RUN lines, the
				335	<tt>llvm-runtests</tt> function will issue an error and the test will
				336	fail.</p>
Misha Brukman	fc1a27b	2005-03-10 22:51:59 +0000	[diff] [blame]	337
Reid Spencer	bbb2a7a	2007-04-14 21:46:15 +0000	[diff] [blame]	338	<p>RUN lines are specified in the comments of the test program using the
				339	keyword <tt>RUN</tt> followed by a colon, and lastly the command (pipeline)
				340	to execute. Together, these lines form the "script" that
				341	<tt>llvm-runtests</tt> executes to run the test case. The syntax of the
				342	RUN lines is similar to a shell's syntax for pipelines including I/O
				343	redirection and variable substitution. However, even though these lines
				344	may <i>look</i> like a shell script, they are not. RUN lines are interpreted
				345	directly by the Tcl <tt>exec</tt> command. They are never executed by a
				346	shell. Consequently the syntax differs from normal shell script syntax in a
				347	few ways. You can specify as many RUN lines as needed.</p>
Tanya Lattner	5026c7f	2004-12-06 02:11:52 +0000	[diff] [blame]	348
Reid Spencer	bbb2a7a	2007-04-14 21:46:15 +0000	[diff] [blame]	349	<p>Each RUN line is executed on its own, distinct from other lines unless
				350	its last character is <tt>\</tt>. This continuation character causes the RUN
				351	line to be concatenated with the next one. In this way you can build up long
				352	pipelines of commands without making huge line lengths. The lines ending in
				353	<tt>\</tt> are concatenated until a RUN line that doesn't end in <tt>\</tt> is
Matthijs Kooijman	6fce844	2008-05-23 11:45:18 +0000	[diff] [blame]	354	found. This concatenated set of RUN lines then constitutes one execution.
Reid Spencer	bbb2a7a	2007-04-14 21:46:15 +0000	[diff] [blame]	355	Tcl will substitute variables and arrange for the pipeline to be executed. If
				356	any process in the pipeline fails, the entire line (and test case) fails too.
				357	</p>
Tanya Lattner	5026c7f	2004-12-06 02:11:52 +0000	[diff] [blame]	358
Reid Spencer	f190277	2007-04-15 08:01:04 +0000	[diff] [blame]	359	<p> Below is an example of legal RUN lines in a <tt>.ll</tt> file:</p>
Bill Wendling	da51c4c	2007-09-22 09:16:44 +0000	[diff] [blame]	360
				361	<div class="doc_code">
				362	<pre>
				363	; RUN: llvm-as < %s \| llvm-dis > %t1
				364	; RUN: llvm-dis < %s.bc-13 > %t2
				365	; RUN: diff %t1 %t2
				366	</pre>
				367	</div>
Reid Spencer	f190277	2007-04-15 08:01:04 +0000	[diff] [blame]	368
Reid Spencer	024a126	2007-04-14 23:27:06 +0000	[diff] [blame]	369	<p>As with a Unix shell, the RUN: lines permit pipelines and I/O redirection
				370	to be used. However, the usage is slightly different than for Bash. To check
				371	what's legal, see the documentation for the
				372	<a href="http://www.tcl.tk/man/tcl8.5/TclCmd/exec.htm#M2">Tcl exec</a>
				373	command and the
				374	<a href="http://www.tcl.tk/man/tcl8.5/tutorial/Tcl26.html">tutorial</a>.
				375	The major differences are:</p>
				376	<ul>
				377	<li>You can't do <tt>2>&1</tt>. That will cause Tcl to write to a
				378	file named <tt>&1</tt>. Usually this is done to get stderr to go through
				379	a pipe. You can do that in tcl with <tt>\|&</tt> so replace this idiom:
				380	<tt>... 2>&1 \| grep</tt> with <tt>... \|& grep</tt></li>
				381	<li>You can only redirect to a file, not to another descriptor and not from
				382	a here document.</li>
				383	<li>tcl supports redirecting to open files with the @ syntax but you
				384	shouldn't use that here.</li>
				385	</ul>
				386
Reid Spencer	f190277	2007-04-15 08:01:04 +0000	[diff] [blame]	387	<p>There are some quoting rules that you must pay attention to when writing
				388	your RUN lines. In general nothing needs to be quoted. Tcl won't strip off any
				389	' or " so they will get passed to the invoked program. For example:</p>
Bill Wendling	da51c4c	2007-09-22 09:16:44 +0000	[diff] [blame]	390
				391	<div class="doc_code">
				392	<pre>
				393	... \| grep 'find this string'
				394	</pre>
				395	</div>
				396
Reid Spencer	f190277	2007-04-15 08:01:04 +0000	[diff] [blame]	397	<p>This will fail because the ' characters are passed to grep. This would
				398	instruction grep to look for <tt>'find</tt> in the files <tt>this</tt> and
				399	<tt>string'</tt>. To avoid this use curly braces to tell Tcl that it should
				400	treat everything enclosed as one value. So our example would become:</p>
Bill Wendling	da51c4c	2007-09-22 09:16:44 +0000	[diff] [blame]	401
				402	<div class="doc_code">
				403	<pre>
				404	... \| grep {find this string}
				405	</pre>
				406	</div>
				407
Reid Spencer	f190277	2007-04-15 08:01:04 +0000	[diff] [blame]	408	<p>Additionally, the characters <tt>[</tt> and <tt>]</tt> are treated
				409	specially by Tcl. They tell Tcl to interpret the content as a command to
				410	execute. Since these characters are often used in regular expressions this can
				411	have disastrous results and cause the entire test run in a directory to fail.
				412	For example, a common idiom is to look for some basicblock number:</p>
Bill Wendling	da51c4c	2007-09-22 09:16:44 +0000	[diff] [blame]	413
				414	<div class="doc_code">
				415	<pre>
				416	... \| grep bb[2-8]
				417	</pre>
				418	</div>
				419
Reid Spencer	f190277	2007-04-15 08:01:04 +0000	[diff] [blame]	420	<p>This, however, will cause Tcl to fail because its going to try to execute
				421	a program named "2-8". Instead, what you want is this:</p>
Bill Wendling	da51c4c	2007-09-22 09:16:44 +0000	[diff] [blame]	422
				423	<div class="doc_code">
				424	<pre>
				425	... \| grep {bb\[2-8\]}
				426	</pre>
				427	</div>
				428
Reid Spencer	f190277	2007-04-15 08:01:04 +0000	[diff] [blame]	429	<p>Finally, if you need to pass the <tt>\</tt> character down to a program,
				430	then it must be doubled. This is another Tcl special character. So, suppose
				431	you had:
Bill Wendling	da51c4c	2007-09-22 09:16:44 +0000	[diff] [blame]	432
				433	<div class="doc_code">
				434	<pre>
				435	... \| grep 'i32\*'
				436	</pre>
				437	</div>
				438
Reid Spencer	f190277	2007-04-15 08:01:04 +0000	[diff] [blame]	439	<p>This will fail to match what you want (a pointer to i32). First, the
				440	<tt>'</tt> do not get stripped off. Second, the <tt>\</tt> gets stripped off
				441	by Tcl so what grep sees is: <tt>'i32*'</tt>. That's not likely to match
				442	anything. To resolve this you must use <tt>\\</tt> and the <tt>{}</tt>, like
				443	this:</p>
Bill Wendling	da51c4c	2007-09-22 09:16:44 +0000	[diff] [blame]	444
				445	<div class="doc_code">
				446	<pre>
				447	... \| grep {i32\\*}
				448	</pre>
				449	</div>
Reid Spencer	f190277	2007-04-15 08:01:04 +0000	[diff] [blame]	450
Reid Spencer	bbb2a7a	2007-04-14 21:46:15 +0000	[diff] [blame]	451	</div>
Tanya Lattner	5026c7f	2004-12-06 02:11:52 +0000	[diff] [blame]	452
Reid Spencer	bbb2a7a	2007-04-14 21:46:15 +0000	[diff] [blame]	453	<!-- _______________________________________________________________________ -->
Matthijs Kooijman	6fce844	2008-05-23 11:45:18 +0000	[diff] [blame]	454	<div class="doc_subsection"><a name="dgvars">Variables and substitutions</a></div>
				455	<!-- _______________________________________________________________________ -->
Reid Spencer	bbb2a7a	2007-04-14 21:46:15 +0000	[diff] [blame]	456	<div class="doc_text">
				457	<p>With a RUN line there are a number of substitutions that are permitted. In
				458	general, any Tcl variable that is available in the <tt>substitute</tt>
				459	function (in <tt>test/lib/llvm.exp</tt>) can be substituted into a RUN line.
				460	To make a substitution just write the variable's name preceded by a $.
				461	Additionally, for compatibility reasons with previous versions of the test
				462	library, certain names can be accessed with an alternate syntax: a % prefix.
				463	These alternates are deprecated and may go away in a future version.
				464	</p>
Bill Wendling	eb6aace	2007-09-22 09:20:07 +0000	[diff] [blame]	465	<p>Here are the available variable names. The alternate syntax is listed in
Reid Spencer	bbb2a7a	2007-04-14 21:46:15 +0000	[diff] [blame]	466	parentheses.</p>
Bill Wendling	da51c4c	2007-09-22 09:16:44 +0000	[diff] [blame]	467
Reid Spencer	bbb2a7a	2007-04-14 21:46:15 +0000	[diff] [blame]	468	<dl style="margin-left: 25px">
				469	<dt><b>$test</b> (%s)</dt>
				470	<dd>The full path to the test case's source. This is suitable for passing
				471	on the command line as the input to an llvm tool.</dd>
Bill Wendling	da51c4c	2007-09-22 09:16:44 +0000	[diff] [blame]	472
Reid Spencer	bbb2a7a	2007-04-14 21:46:15 +0000	[diff] [blame]	473	<dt><b>$srcdir</b></dt>
				474	<dd>The source directory from where the "<tt>make check</tt>" was run.</dd>
Bill Wendling	da51c4c	2007-09-22 09:16:44 +0000	[diff] [blame]	475
Reid Spencer	bbb2a7a	2007-04-14 21:46:15 +0000	[diff] [blame]	476	<dt><b>objdir</b></dt>
Bill Wendling	eb6aace	2007-09-22 09:20:07 +0000	[diff] [blame]	477	<dd>The object directory that corresponds to the <tt>$srcdir</tt>.</dd>
Bill Wendling	da51c4c	2007-09-22 09:16:44 +0000	[diff] [blame]	478
Reid Spencer	bbb2a7a	2007-04-14 21:46:15 +0000	[diff] [blame]	479	<dt><b>subdir</b></dt>
				480	<dd>A partial path from the <tt>test</tt> directory that contains the
				481	sub-directory that contains the test source being executed.</dd>
Bill Wendling	da51c4c	2007-09-22 09:16:44 +0000	[diff] [blame]	482
Reid Spencer	bbb2a7a	2007-04-14 21:46:15 +0000	[diff] [blame]	483	<dt><b>srcroot</b></dt>
				484	<dd>The root directory of the LLVM src tree.</dd>
Bill Wendling	da51c4c	2007-09-22 09:16:44 +0000	[diff] [blame]	485
Reid Spencer	bbb2a7a	2007-04-14 21:46:15 +0000	[diff] [blame]	486	<dt><b>objroot</b></dt>
				487	<dd>The root directory of the LLVM object tree. This could be the same
				488	as the srcroot.</dd>
Bill Wendling	da51c4c	2007-09-22 09:16:44 +0000	[diff] [blame]	489
Reid Spencer	bbb2a7a	2007-04-14 21:46:15 +0000	[diff] [blame]	490	<dt><b>path</b><dt>
				491	<dd>The path to the directory that contains the test case source. This is
				492	for locating any supporting files that are not generated by the test, but
				493	used by the test.</dd>
Bill Wendling	da51c4c	2007-09-22 09:16:44 +0000	[diff] [blame]	494
Reid Spencer	bbb2a7a	2007-04-14 21:46:15 +0000	[diff] [blame]	495	<dt><b>tmp</b></dt>
				496	<dd>The path to a temporary file name that could be used for this test case.
				497	The file name won't conflict with other test cases. You can append to it if
				498	you need multiple temporaries. This is useful as the destination of some
				499	redirected output.</dd>
Bill Wendling	da51c4c	2007-09-22 09:16:44 +0000	[diff] [blame]	500
Reid Spencer	bbb2a7a	2007-04-14 21:46:15 +0000	[diff] [blame]	501	<dt><b>llvmlibsdir</b> (%llvmlibsdir)</dt>
				502	<dd>The directory where the LLVM libraries are located.</dd>
Bill Wendling	da51c4c	2007-09-22 09:16:44 +0000	[diff] [blame]	503
Reid Spencer	bbb2a7a	2007-04-14 21:46:15 +0000	[diff] [blame]	504	<dt><b>target_triplet</b> (%target_triplet)</dt>
				505	<dd>The target triplet that corresponds to the current host machine (the one
				506	running the test cases). This should probably be called "host".<dd>
Bill Wendling	da51c4c	2007-09-22 09:16:44 +0000	[diff] [blame]	507
Reid Spencer	bbb2a7a	2007-04-14 21:46:15 +0000	[diff] [blame]	508	<dt><b>prcontext</b> (%prcontext)</dt>
				509	<dd>Path to the prcontext tcl script that prints some context around a
				510	line that matches a pattern. This isn't strictly necessary as the test suite
				511	is run with its PATH altered to include the test/Scripts directory where
				512	the prcontext script is located. Note that this script is similar to
				513	<tt>grep -C</tt> but you should use the <tt>prcontext</tt> script because
				514	not all platforms support <tt>grep -C</tt>.</dd>
Bill Wendling	da51c4c	2007-09-22 09:16:44 +0000	[diff] [blame]	515
Reid Spencer	bbb2a7a	2007-04-14 21:46:15 +0000	[diff] [blame]	516	<dt><b>llvmgcc</b> (%llvmgcc)</dt>
				517	<dd>The full path to the <tt>llvm-gcc</tt> executable as specified in the
				518	configured LLVM environment</dd>
Bill Wendling	da51c4c	2007-09-22 09:16:44 +0000	[diff] [blame]	519
Reid Spencer	bbb2a7a	2007-04-14 21:46:15 +0000	[diff] [blame]	520	<dt><b>llvmgxx</b> (%llvmgxx)</dt>
				521	<dd>The full path to the <tt>llvm-gxx</tt> executable as specified in the
				522	configured LLVM environment</dd>
Bill Wendling	da51c4c	2007-09-22 09:16:44 +0000	[diff] [blame]	523
Reid Spencer	bbb2a7a	2007-04-14 21:46:15 +0000	[diff] [blame]	524	<dt><b>llvmgcc_version</b> (%llvmgcc_version)</dt>
				525	<dd>The full version number of the <tt>llvm-gcc</tt> executable.</dd>
Bill Wendling	da51c4c	2007-09-22 09:16:44 +0000	[diff] [blame]	526
Reid Spencer	bbb2a7a	2007-04-14 21:46:15 +0000	[diff] [blame]	527	<dt><b>llvmgccmajvers</b> (%llvmgccmajvers)</dt>
				528	<dd>The major version number of the <tt>llvm-gcc</tt> executable.</dd>
Bill Wendling	da51c4c	2007-09-22 09:16:44 +0000	[diff] [blame]	529
Reid Spencer	bbb2a7a	2007-04-14 21:46:15 +0000	[diff] [blame]	530	<dt><b>gccpath</b></dt>
				531	<dd>The full path to the C compiler used to <i>build </i> LLVM. Note that
				532	this might not be gcc.</dd>
Bill Wendling	da51c4c	2007-09-22 09:16:44 +0000	[diff] [blame]	533
Reid Spencer	bbb2a7a	2007-04-14 21:46:15 +0000	[diff] [blame]	534	<dt><b>gxxpath</b></dt>
				535	<dd>The full path to the C++ compiler used to <i>build </i> LLVM. Note that
				536	this might not be g++.</dd>
Bill Wendling	da51c4c	2007-09-22 09:16:44 +0000	[diff] [blame]	537
Reid Spencer	bbb2a7a	2007-04-14 21:46:15 +0000	[diff] [blame]	538	<dt><b>compile_c</b> (%compile_c)</dt>
				539	<dd>The full command line used to compile LLVM C source code. This has all
				540	the configured -I, -D and optimization options.</dd>
Bill Wendling	da51c4c	2007-09-22 09:16:44 +0000	[diff] [blame]	541
Reid Spencer	bbb2a7a	2007-04-14 21:46:15 +0000	[diff] [blame]	542	<dt><b>compile_cxx</b> (%compile_cxx)</dt>
				543	<dd>The full command used to compile LLVM C++ source code. This has
				544	all the configured -I, -D and optimization options.</dd>
Bill Wendling	da51c4c	2007-09-22 09:16:44 +0000	[diff] [blame]	545
Reid Spencer	bbb2a7a	2007-04-14 21:46:15 +0000	[diff] [blame]	546	<dt><b>link</b> (%link)</dt>
				547	<dd>This full link command used to link LLVM executables. This has all the
				548	configured -I, -L and -l options.</dd>
Bill Wendling	da51c4c	2007-09-22 09:16:44 +0000	[diff] [blame]	549
Reid Spencer	bbb2a7a	2007-04-14 21:46:15 +0000	[diff] [blame]	550	<dt><b>shlibext</b> (%shlibext)</dt>
				551	<dd>The suffix for the host platforms share library (dll) files. This
				552	includes the period as the first character.</dd>
				553	</dl>
				554	<p>To add more variables, two things need to be changed. First, add a line in
				555	the <tt>test/Makefile</tt> that creates the <tt>site.exp</tt> file. This will
				556	"set" the variable as a global in the site.exp file. Second, in the
				557	<tt>test/lib/llvm.exp</tt> file, in the substitute proc, add the variable name
				558	to the list of "global" declarations at the beginning of the proc. That's it,
				559	the variable can then be used in test scripts.</p>
				560	</div>
				561
				562	<!-- _______________________________________________________________________ -->
				563	<div class="doc_subsection"><a name="dgfeatures">Other Features</a></div>
Matthijs Kooijman	6fce844	2008-05-23 11:45:18 +0000	[diff] [blame]	564	<!-- _______________________________________________________________________ -->
Reid Spencer	bbb2a7a	2007-04-14 21:46:15 +0000	[diff] [blame]	565	<div class="doc_text">
				566	<p>To make RUN line writing easier, there are several shell scripts located
Matthijs Kooijman	6fce844	2008-05-23 11:45:18 +0000	[diff] [blame]	567	in the <tt>llvm/test/Scripts</tt> directory. This directory is in the PATH
				568	when running tests, so you can just call these scripts using their name. For
				569	example:</p>
Reid Spencer	bbb2a7a	2007-04-14 21:46:15 +0000	[diff] [blame]	570	<dl>
				571	<dt><b>ignore</b></dt>
				572	<dd>This script runs its arguments and then always returns 0. This is useful
				573	in cases where the test needs to cause a tool to generate an error (e.g. to
				574	check the error output). However, any program in a pipeline that returns a
				575	non-zero result will cause the test to fail. This script overcomes that
				576	issue and nicely documents that the test case is purposefully ignoring the
				577	result code of the tool</dd>
Bill Wendling	da51c4c	2007-09-22 09:16:44 +0000	[diff] [blame]	578
Reid Spencer	bbb2a7a	2007-04-14 21:46:15 +0000	[diff] [blame]	579	<dt><b>not</b></dt>
				580	<dd>This script runs its arguments and then inverts the result code from
				581	it. Zero result codes become 1. Non-zero result codes become 0. This is
				582	useful to invert the result of a grep. For example "not grep X" means
				583	succeed only if you don't find X in the input.</dd>
				584	</dl>
Tanya Lattner	5026c7f	2004-12-06 02:11:52 +0000	[diff] [blame]	585
Reid Spencer	bbb2a7a	2007-04-14 21:46:15 +0000	[diff] [blame]	586	<p>Sometimes it is necessary to mark a test case as "expected fail" or XFAIL.
				587	You can easily mark a test as XFAIL just by including <tt>XFAIL: </tt> on a
				588	line near the top of the file. This signals that the test case should succeed
				589	if the test fails. Such test cases are counted separately by DejaGnu. To
				590	specify an expected fail, use the XFAIL keyword in the comments of the test
				591	program followed by a colon and one or more regular expressions (separated by
				592	a comma). The regular expressions allow you to XFAIL the test conditionally
				593	by host platform. The regular expressions following the : are matched against
				594	the target triplet or llvmgcc version number for the host machine. If there is
				595	a match, the test is expected to fail. If not, the test is expected to
				596	succeed. To XFAIL everywhere just specify <tt>XFAIL: *</tt>. When matching
				597	the llvm-gcc version, you can specify the major (e.g. 3) or full version
				598	(i.e. 3.4) number. Here is an example of an <tt>XFAIL</tt> line:</p>
Bill Wendling	da51c4c	2007-09-22 09:16:44 +0000	[diff] [blame]	599
				600	<div class="doc_code">
				601	<pre>
				602	; XFAIL: darwin,sun,llvmgcc4
				603	</pre>
				604	</div>
Tanya Lattner	5026c7f	2004-12-06 02:11:52 +0000	[diff] [blame]	605
Reid Spencer	bbb2a7a	2007-04-14 21:46:15 +0000	[diff] [blame]	606	<p>To make the output more useful, the <tt>llvm_runtest</tt> function wil
				607	scan the lines of the test case for ones that contain a pattern that matches
				608	PR[0-9]+. This is the syntax for specifying a PR (Problem Report) number that
Matthijs Kooijman	6fce844	2008-05-23 11:45:18 +0000	[diff] [blame]	609	is related to the test case. The number after "PR" specifies the LLVM bugzilla
Reid Spencer	bbb2a7a	2007-04-14 21:46:15 +0000	[diff] [blame]	610	number. When a PR number is specified, it will be used in the pass/fail
				611	reporting. This is useful to quickly get some context when a test fails.</p>
				612
				613	<p>Finally, any line that contains "END." will cause the special
				614	interpretation of lines to terminate. This is generally done right after the
				615	last RUN: line. This has two side effects: (a) it prevents special
				616	interpretation of lines that are part of the test program, not the
				617	instructions to the test case, and (b) it speeds things up for really big test
				618	cases by avoiding interpretation of the remainder of the file.</p>
Tanya Lattner	5026c7f	2004-12-06 02:11:52 +0000	[diff] [blame]	619
				620	</div>
John Criswell	020cbd8	2003-10-10 18:42:49 +0000	[diff] [blame]	621
Reid Spencer	8284f1f	2004-09-05 20:07:26 +0000	[diff] [blame]	622	<!--=========================================================================-->
Matthijs Kooijman	31ce08f	2008-06-24 12:58:31 +0000	[diff] [blame]	623	<div class="doc_section"><a name="testsuitestructure">Test suite
Reid Spencer	8284f1f	2004-09-05 20:07:26 +0000	[diff] [blame]	624	Structure</a></div>
				625	<!--=========================================================================-->
John Criswell	020cbd8	2003-10-10 18:42:49 +0000	[diff] [blame]	626
Misha Brukman	1d83e11	2004-03-01 18:21:04 +0000	[diff] [blame]	627	<div class="doc_text">
Brian Gaeke	af19f2e	2003-10-23 18:10:28 +0000	[diff] [blame]	628
Matthijs Kooijman	6fce844	2008-05-23 11:45:18 +0000	[diff] [blame]	629	<p>The <tt>test-suite</tt> module contains a number of programs that can be compiled
				630	with LLVM and executed. These programs are compiled using the native compiler
				631	and various LLVM backends. The output from the program compiled with the
				632	native compiler is assumed correct; the results from the other programs are
				633	compared to the native program output and pass if they match.</p>
John Criswell	020cbd8	2003-10-10 18:42:49 +0000	[diff] [blame]	634
Matthijs Kooijman	6fce844	2008-05-23 11:45:18 +0000	[diff] [blame]	635	<p>When executing tests, it is usually a good idea to start out with a subset of
				636	the available tests or programs. This makes test run times smaller at first and
				637	later on this is useful to investigate individual test failures. To run some
				638	test only on a subset of programs, simply change directory to the programs you
				639	want tested and run <tt>gmake</tt> there. Alternatively, you can run a different
				640	test using the <tt>TEST</tt> variable to change what tests or run on the
				641	selected programs (see below for more info).</p>
Misha Brukman	1d83e11	2004-03-01 18:21:04 +0000	[diff] [blame]	642
Matthijs Kooijman	6fce844	2008-05-23 11:45:18 +0000	[diff] [blame]	643	<p>In addition for testing correctness, the <tt>llvm-test</tt> directory also
				644	performs timing tests of various LLVM optimizations. It also records
				645	compilation times for the compilers and the JIT. This information can be
				646	used to compare the effectiveness of LLVM's optimizations and code
				647	generation.</p>
Misha Brukman	1d83e11	2004-03-01 18:21:04 +0000	[diff] [blame]	648
Matthijs Kooijman	6fce844	2008-05-23 11:45:18 +0000	[diff] [blame]	649	<p><tt>llvm-test</tt> tests are divided into three types of tests: MultiSource,
				650	SingleSource, and External.</p>
Reid Spencer	3281ead	2004-12-08 16:52:51 +0000	[diff] [blame]	651
Matthijs Kooijman	6fce844	2008-05-23 11:45:18 +0000	[diff] [blame]	652	<ul>
				653	<li><tt>llvm-test/SingleSource</tt>
				654	<p>The SingleSource directory contains test programs that are only a single
				655	source file in size. These are usually small benchmark programs or small
				656	programs that calculate a particular value. Several such programs are grouped
				657	together in each directory.</p></li>
Bill Wendling	da51c4c	2007-09-22 09:16:44 +0000	[diff] [blame]	658
Matthijs Kooijman	6fce844	2008-05-23 11:45:18 +0000	[diff] [blame]	659	<li><tt>llvm-test/MultiSource</tt>
				660	<p>The MultiSource directory contains subdirectories which contain entire
				661	programs with multiple source files. Large benchmarks and whole applications
				662	go here.</p></li>
Bill Wendling	da51c4c	2007-09-22 09:16:44 +0000	[diff] [blame]	663
Matthijs Kooijman	6fce844	2008-05-23 11:45:18 +0000	[diff] [blame]	664	<li><tt>llvm-test/External</tt>
				665	<p>The External directory contains Makefiles for building code that is external
				666	to (i.e., not distributed with) LLVM. The most prominent members of this
				667	directory are the SPEC 95 and SPEC 2000 benchmark suites. The <tt>External</tt>
				668	directory does not contain these actual tests,but only the Makefiles that know
				669	how to properly compile these programs from somewhere else. The presence and
				670	location of these external programs is configured by the llvm-test
				671	<tt>configure</tt> script.</p></li>
				672	</ul>
				673
				674	<p>Each tree is then subdivided into several categories, including applications,
				675	benchmarks, regression tests, code that is strange grammatically, etc. These
				676	organizations should be relatively self explanatory.</p>
				677
				678	<p>Some tests are known to fail. Some are bugs that we have not fixed yet;
				679	others are features that we haven't added yet (or may never add). In DejaGNU,
				680	the result for such tests will be XFAIL (eXpected FAILure). In this way, you
				681	can tell the difference between an expected and unexpected failure.</p>
				682
Matthijs Kooijman	31ce08f	2008-06-24 12:58:31 +0000	[diff] [blame]	683	<p>The tests in the test suite have no such feature at this time. If the
Matthijs Kooijman	6fce844	2008-05-23 11:45:18 +0000	[diff] [blame]	684	test passes, only warnings and other miscellaneous output will be generated. If
				685	a test fails, a large <program> FAILED message will be displayed. This
				686	will help you separate benign warnings from actual test failures.</p>
				687
Misha Brukman	1d83e11	2004-03-01 18:21:04 +0000	[diff] [blame]	688	</div>
				689
Reid Spencer	8284f1f	2004-09-05 20:07:26 +0000	[diff] [blame]	690	<!--=========================================================================-->
Matthijs Kooijman	31ce08f	2008-06-24 12:58:31 +0000	[diff] [blame]	691	<div class="doc_section"><a name="testsuiterun">Running the test suite</a></div>
Reid Spencer	8284f1f	2004-09-05 20:07:26 +0000	[diff] [blame]	692	<!--=========================================================================-->
Misha Brukman	1d83e11	2004-03-01 18:21:04 +0000	[diff] [blame]	693
				694	<div class="doc_text">
				695
				696	<p>First, all tests are executed within the LLVM object directory tree. They
Reid Spencer	8284f1f	2004-09-05 20:07:26 +0000	[diff] [blame]	697	<i>are not</i> executed inside of the LLVM source tree. This is because the
				698	test suite creates temporary files during execution.</p>
Misha Brukman	1d83e11	2004-03-01 18:21:04 +0000	[diff] [blame]	699
Matthijs Kooijman	31ce08f	2008-06-24 12:58:31 +0000	[diff] [blame]	700	<p>To run the test suite, you need to use the following steps:</p>
Bill Wendling	da51c4c	2007-09-22 09:16:44 +0000	[diff] [blame]	701
Reid Spencer	8284f1f	2004-09-05 20:07:26 +0000	[diff] [blame]	702	<ol>
Bill Wendling	da51c4c	2007-09-22 09:16:44 +0000	[diff] [blame]	703	<li><tt>cd</tt> into the <tt>llvm/projects</tt> directory</li>
				704
				705	<li><p>Check out the <tt>test-suite</tt> module with:</p>
				706
				707	<div class="doc_code">
				708	<pre>
Matthijs Kooijman	31ce08f	2008-06-24 12:58:31 +0000	[diff] [blame]	709	% svn co http://llvm.org/svn/llvm-project/test-suite/trunk test-suite
Bill Wendling	da51c4c	2007-09-22 09:16:44 +0000	[diff] [blame]	710	</pre>
				711	</div>
				712
				713	<p>This will get the test suite into <tt>llvm/projects/llvm-test</tt></p>
				714
Matthijs Kooijman	31ce08f	2008-06-24 12:58:31 +0000	[diff] [blame]	715	<li><p>Configure the test suite using llvm configure. This will automatically
				716	configure test-suite. You must do it from the top level otherwise llvm-gcc
				717	will not be set which is required to run llvm-test:</p>
Bill Wendling	da51c4c	2007-09-22 09:16:44 +0000	[diff] [blame]	718	<div class="doc_code">
				719	<pre>
Tanya Lattner	1de4849	2007-11-28 05:13:45 +0000	[diff] [blame]	720	% cd $LLVM_OBJ_ROOT ; $LLVM_SRC_ROOT/configure --with-llvmgccdir=$LLVM_GCC_DIR
Bill Wendling	da51c4c	2007-09-22 09:16:44 +0000	[diff] [blame]	721	</pre>
				722	</div>
Matthijs Kooijman	d30020a	2008-05-20 10:28:55 +0000	[diff] [blame]	723	<p>Note that that <tt>$LLVM_GCC_DIR</tt> is the directory where you
				724	<em>installed</em> llvm-gcc, not its src or obj directory.</p>
				725	</li>
				726
Matthijs Kooijman	31ce08f	2008-06-24 12:58:31 +0000	[diff] [blame]	727	<li><p>Change back to the <tt>llvm/projects/test-suite</tt> directory you created before
Matthijs Kooijman	d30020a	2008-05-20 10:28:55 +0000	[diff] [blame]	728	and run <tt>gmake</tt> (or just "<tt>make</tt>" on systems where GNU make is
				729	the default, such as linux.</p></li>
Reid Spencer	8284f1f	2004-09-05 20:07:26 +0000	[diff] [blame]	730	</ol>
				731	<p>Note that the second and third steps only need to be done once. After you
				732	have the suite checked out and configured, you don't need to do it again (unless
Matthijs Kooijman	d30020a	2008-05-20 10:28:55 +0000	[diff] [blame]	733	the test code or configure script changes).</p>
Reid Spencer	8284f1f	2004-09-05 20:07:26 +0000	[diff] [blame]	734
Matthijs Kooijman	6fce844	2008-05-23 11:45:18 +0000	[diff] [blame]	735	<!-- _______________________________________________________________________ -->
				736	<div class="doc_subsection">
Matthijs Kooijman	31ce08f	2008-06-24 12:58:31 +0000	[diff] [blame]	737	<a name="testsuiteexternal">Configuring external tests</a></div>
Matthijs Kooijman	6fce844	2008-05-23 11:45:18 +0000	[diff] [blame]	738	<!-- _______________________________________________________________________ -->
Misha Brukman	1d83e11	2004-03-01 18:21:04 +0000	[diff] [blame]	739
Matthijs Kooijman	6fce844	2008-05-23 11:45:18 +0000	[diff] [blame]	740	<div class="doc_text">
Matthijs Kooijman	31ce08f	2008-06-24 12:58:31 +0000	[diff] [blame]	741	<p>Note, when configuring the <tt>test-suite</tt> module, you might want to
Dale Johannesen	80b9902	2008-12-10 01:58:32 +0000	[diff] [blame]	742	specify the following configuration option:</p>
Matthijs Kooijman	6fce844	2008-05-23 11:45:18 +0000	[diff] [blame]	743	<dl>
Dale Johannesen	80b9902	2008-12-10 01:58:32 +0000	[diff] [blame]	744	<dt><i>--with-externals</i></dt>
				745	<dt><i>--with-externals=<<tt>directory</tt>></i></dt>
Matthijs Kooijman	6fce844	2008-05-23 11:45:18 +0000	[diff] [blame]	746	</dl>
Dale Johannesen	80b9902	2008-12-10 01:58:32 +0000	[diff] [blame]	747	This tells LLVM where to find any external tests. They are expected to be
				748	in specifically named subdirectories of <<tt>directory</tt>>.
				749	If <tt>directory</tt> is left unspecified,
				750	<tt>configure</tt> uses the default value
				751	<tt>/home/vadve/shared/benchmarks/speccpu2000/benchspec</tt>.
				752	Subdirectory names known to LLVM include:
				753	<dl>
				754	<dt>spec95</dt>
				755	<dt>speccpu2000</dt>
				756	<dt>speccpu2006</dt>
				757	<dt>povray31</dt>
				758	</dl>
				759	Others are added from time to time, and can be determined from
				760	<tt>configure</tt>.
Bill Wendling	da51c4c	2007-09-22 09:16:44 +0000	[diff] [blame]	761	</div>
				762
Matthijs Kooijman	6fce844	2008-05-23 11:45:18 +0000	[diff] [blame]	763	<!-- _______________________________________________________________________ -->
				764	<div class="doc_subsection">
Matthijs Kooijman	31ce08f	2008-06-24 12:58:31 +0000	[diff] [blame]	765	<a name="testsuitetests">Running different tests</a></div>
Matthijs Kooijman	6fce844	2008-05-23 11:45:18 +0000	[diff] [blame]	766	<!-- _______________________________________________________________________ -->
				767	<div class="doc_text">
Matthijs Kooijman	31ce08f	2008-06-24 12:58:31 +0000	[diff] [blame]	768	<p>In addition to the regular "whole program" tests, the <tt>test-suite</tt>
Matthijs Kooijman	6fce844	2008-05-23 11:45:18 +0000	[diff] [blame]	769	module also provides a mechanism for compiling the programs in different ways.
Matthijs Kooijman	31ce08f	2008-06-24 12:58:31 +0000	[diff] [blame]	770	If the variable TEST is defined on the <tt>gmake</tt> command line, the test system will
Matthijs Kooijman	6fce844	2008-05-23 11:45:18 +0000	[diff] [blame]	771	include a Makefile named <tt>TEST.<value of TEST variable>.Makefile</tt>.
				772	This Makefile can modify build rules to yield different results.</p>
Bill Wendling	da51c4c	2007-09-22 09:16:44 +0000	[diff] [blame]	773
Matthijs Kooijman	6fce844	2008-05-23 11:45:18 +0000	[diff] [blame]	774	<p>For example, the LLVM nightly tester uses <tt>TEST.nightly.Makefile</tt> to
				775	create the nightly test reports. To run the nightly tests, run <tt>gmake
				776	TEST=nightly</tt>.</p>
				777
				778	<p>There are several TEST Makefiles available in the tree. Some of them are
				779	designed for internal LLVM research and will not work outside of the LLVM
				780	research group. They may still be valuable, however, as a guide to writing your
				781	own TEST Makefile for any optimization or analysis passes that you develop with
				782	LLVM.</p>
				783
Bill Wendling	da51c4c	2007-09-22 09:16:44 +0000	[diff] [blame]	784	</div>
Misha Brukman	1d83e11	2004-03-01 18:21:04 +0000	[diff] [blame]	785
Matthijs Kooijman	6fce844	2008-05-23 11:45:18 +0000	[diff] [blame]	786	<!-- _______________________________________________________________________ -->
				787	<div class="doc_subsection">
Matthijs Kooijman	31ce08f	2008-06-24 12:58:31 +0000	[diff] [blame]	788	<a name="testsuiteoutput">Generating test output</a></div>
Matthijs Kooijman	6fce844	2008-05-23 11:45:18 +0000	[diff] [blame]	789	<!-- _______________________________________________________________________ -->
				790	<div class="doc_text">
				791	<p>There are a number of ways to run the tests and generate output. The most
				792	simple one is simply running <tt>gmake</tt> with no arguments. This will
				793	compile and run all programs in the tree using a number of different methods
				794	and compare results. Any failures are reported in the output, but are likely
				795	drowned in the other output. Passes are not reported explicitely.</p>
Misha Brukman	1d83e11	2004-03-01 18:21:04 +0000	[diff] [blame]	796
Matthijs Kooijman	6fce844	2008-05-23 11:45:18 +0000	[diff] [blame]	797	<p>Somewhat better is running <tt>gmake TEST=sometest test</tt>, which runs
				798	the specified test and usually adds per-program summaries to the output
				799	(depending on which sometest you use). For example, the <tt>nightly</tt> test
				800	explicitely outputs TEST-PASS or TEST-FAIL for every test after each program.
				801	Though these lines are still drowned in the output, it's easy to grep the
				802	output logs in the Output directories.</p>
Misha Brukman	1d83e11	2004-03-01 18:21:04 +0000	[diff] [blame]	803
Matthijs Kooijman	6fce844	2008-05-23 11:45:18 +0000	[diff] [blame]	804	<p>Even better are the <tt>report</tt> and <tt>report.format</tt> targets
				805	(where <tt>format</tt> is one of <tt>html</tt>, <tt>csv</tt>, <tt>text</tt> or
				806	<tt>graphs</tt>). The exact contents of the report are dependent on which
				807	<tt>TEST</tt> you are running, but the text results are always shown at the
				808	end of the run and the results are always stored in the
				809	<tt>report.<type>.format</tt> file (when running with
				810	<tt>TEST=<type></tt>).
Chris Lattner	fd9d1b3	2004-06-24 20:53:09 +0000	[diff] [blame]	811
Matthijs Kooijman	6fce844	2008-05-23 11:45:18 +0000	[diff] [blame]	812	The <tt>report</tt> also generate a file called
				813	<tt>report.<type>.raw.out</tt> containing the output of the entire test
				814	run.
Chris Lattner	fd9d1b3	2004-06-24 20:53:09 +0000	[diff] [blame]	815	</div>
				816
Chris Lattner	eb82da8	2006-05-23 01:40:20 +0000	[diff] [blame]	817	<!-- _______________________________________________________________________ -->
				818	<div class="doc_subsection">
Matthijs Kooijman	31ce08f	2008-06-24 12:58:31 +0000	[diff] [blame]	819	<a name="testsuitecustom">Writing custom tests for the test suite</a></div>
Chris Lattner	eb82da8	2006-05-23 01:40:20 +0000	[diff] [blame]	820	<!-- _______________________________________________________________________ -->
				821
				822	<div class="doc_text">
				823
Matthijs Kooijman	31ce08f	2008-06-24 12:58:31 +0000	[diff] [blame]	824	<p>Assuming you can run the test suite, (e.g. "<tt>gmake TEST=nightly report</tt>"
Chris Lattner	eb82da8	2006-05-23 01:40:20 +0000	[diff] [blame]	825	should work), it is really easy to run optimizations or code generator
				826	components against every program in the tree, collecting statistics or running
				827	custom checks for correctness. At base, this is how the nightly tester works,
				828	it's just one example of a general framework.</p>
				829
				830	<p>Lets say that you have an LLVM optimization pass, and you want to see how
				831	many times it triggers. First thing you should do is add an LLVM
				832	<a href="ProgrammersManual.html#Statistic">statistic</a> to your pass, which
				833	will tally counts of things you care about.</p>
				834
				835	<p>Following this, you can set up a test and a report that collects these and
				836	formats them for easy viewing. This consists of two files, an
Matthijs Kooijman	31ce08f	2008-06-24 12:58:31 +0000	[diff] [blame]	837	"<tt>test-suite/TEST.XXX.Makefile</tt>" fragment (where XXX is the name of your
Chris Lattner	eb82da8	2006-05-23 01:40:20 +0000	[diff] [blame]	838	test) and an "<tt>llvm-test/TEST.XXX.report</tt>" file that indicates how to
				839	format the output into a table. There are many example reports of various
Matthijs Kooijman	31ce08f	2008-06-24 12:58:31 +0000	[diff] [blame]	840	levels of sophistication included with the test suite, and the framework is very
Chris Lattner	eb82da8	2006-05-23 01:40:20 +0000	[diff] [blame]	841	general.</p>
				842
				843	<p>If you are interested in testing an optimization pass, check out the
				844	"libcalls" test as an example. It can be run like this:<p>
				845
				846	<div class="doc_code">
				847	<pre>
Matthijs Kooijman	31ce08f	2008-06-24 12:58:31 +0000	[diff] [blame]	848	% cd llvm/projects/test-suite/MultiSource/Benchmarks # or some other level
Chris Lattner	eb82da8	2006-05-23 01:40:20 +0000	[diff] [blame]	849	% make TEST=libcalls report
				850	</pre>
				851	</div>
				852
				853	<p>This will do a bunch of stuff, then eventually print a table like this:</p>
				854
				855	<div class="doc_code">
				856	<pre>
				857	Name \| total \| #exit \|
				858	...
				859	FreeBench/analyzer/analyzer \| 51 \| 6 \|
				860	FreeBench/fourinarow/fourinarow \| 1 \| 1 \|
				861	FreeBench/neural/neural \| 19 \| 9 \|
				862	FreeBench/pifft/pifft \| 5 \| 3 \|
				863	MallocBench/cfrac/cfrac \| 1 \| * \|
				864	MallocBench/espresso/espresso \| 52 \| 12 \|
				865	MallocBench/gs/gs \| 4 \| * \|
				866	Prolangs-C/TimberWolfMC/timberwolfmc \| 302 \| * \|
				867	Prolangs-C/agrep/agrep \| 33 \| 12 \|
				868	Prolangs-C/allroots/allroots \| * \| * \|
				869	Prolangs-C/assembler/assembler \| 47 \| * \|
				870	Prolangs-C/bison/mybison \| 74 \| * \|
				871	...
				872	</pre>
				873	</div>
				874
				875	<p>This basically is grepping the -stats output and displaying it in a table.
				876	You can also use the "TEST=libcalls report.html" target to get the table in HTML
				877	form, similarly for report.csv and report.tex.</p>
				878
Matthijs Kooijman	31ce08f	2008-06-24 12:58:31 +0000	[diff] [blame]	879	<p>The source for this is in test-suite/TEST.libcalls.*. The format is pretty
Chris Lattner	eb82da8	2006-05-23 01:40:20 +0000	[diff] [blame]	880	simple: the Makefile indicates how to run the test (in this case,
				881	"<tt>opt -simplify-libcalls -stats</tt>"), and the report contains one line for
				882	each column of the output. The first value is the header for the column and the
				883	second is the regex to grep the output of the command for. There are lots of
				884	example reports that can do fancy stuff.</p>
				885
				886	</div>
				887
				888
Reid Spencer	8284f1f	2004-09-05 20:07:26 +0000	[diff] [blame]	889	<!--=========================================================================-->
Chris Lattner	fd9d1b3	2004-06-24 20:53:09 +0000	[diff] [blame]	890	<div class="doc_section"><a name="nightly">Running the nightly tester</a></div>
Reid Spencer	8284f1f	2004-09-05 20:07:26 +0000	[diff] [blame]	891	<!--=========================================================================-->
Chris Lattner	fd9d1b3	2004-06-24 20:53:09 +0000	[diff] [blame]	892
				893	<div class="doc_text">
				894
				895	<p>
Patrick Jenkins	825c2a7	2006-08-11 23:27:02 +0000	[diff] [blame]	896	The <a href="http://llvm.org/nightlytest/">LLVM Nightly Testers</a>
Chris Lattner	fd9d1b3	2004-06-24 20:53:09 +0000	[diff] [blame]	897	automatically check out an LLVM tree, build it, run the "nightly"
Matthijs Kooijman	6fce844	2008-05-23 11:45:18 +0000	[diff] [blame]	898	program test (described above), run all of the DejaGNU tests,
Patrick Jenkins	825c2a7	2006-08-11 23:27:02 +0000	[diff] [blame]	899	delete the checked out tree, and then submit the results to
				900	<a href="http://llvm.org/nightlytest/">http://llvm.org/nightlytest/</a>.
				901	After test results are submitted to
				902	<a href="http://llvm.org/nightlytest/">http://llvm.org/nightlytest/</a>,
				903	they are processed and displayed on the tests page. An email to
				904	<a href="http://lists.cs.uiuc.edu/pipermail/llvm-testresults/">
				905	llvm-testresults@cs.uiuc.edu</a> summarizing the results is also generated.
				906	This testing scheme is designed to ensure that programs don't break as well
				907	as keep track of LLVM's progress over time.</p>
Chris Lattner	fd9d1b3	2004-06-24 20:53:09 +0000	[diff] [blame]	908
Patrick Jenkins	825c2a7	2006-08-11 23:27:02 +0000	[diff] [blame]	909	<p>If you'd like to set up an instance of the nightly tester to run on your
				910	machine, take a look at the comments at the top of the
				911	<tt>utils/NewNightlyTest.pl</tt> file. If you decide to set up a nightly tester
				912	please choose a unique nickname and invoke <tt>utils/NewNightlyTest.pl</tt>
Reid Spencer	669ed45	2007-07-09 08:04:31 +0000	[diff] [blame]	913	with the "-nickname [yournickname]" command line option.
Chris Lattner	fd9d1b3	2004-06-24 20:53:09 +0000	[diff] [blame]	914
Reid Spencer	669ed45	2007-07-09 08:04:31 +0000	[diff] [blame]	915	<p>You can create a shell script to encapsulate the running of the script.
Misha Brukman	fc1a27b	2005-03-10 22:51:59 +0000	[diff] [blame]	916	The optimized x86 Linux nightly test is run from just such a script:</p>
				917
				918	<div class="doc_code">
Reid Spencer	8284f1f	2004-09-05 20:07:26 +0000	[diff] [blame]	919	<pre>
				920	#!/bin/bash
				921	BASE=/proj/work/llvm/nightlytest
Reid Spencer	8284f1f	2004-09-05 20:07:26 +0000	[diff] [blame]	922	export BUILDDIR=$BASE/build
				923	export WEBDIR=$BASE/testresults
				924	export LLVMGCCDIR=/proj/work/llvm/cfrontend/install
				925	export PATH=/proj/install/bin:$LLVMGCCDIR/bin:$PATH
				926	export LD_LIBRARY_PATH=/proj/install/lib
Reid Spencer	8284f1f	2004-09-05 20:07:26 +0000	[diff] [blame]	927	cd $BASE
Patrick Jenkins	825c2a7	2006-08-11 23:27:02 +0000	[diff] [blame]	928	cp /proj/work/llvm/llvm/utils/NewNightlyTest.pl .
				929	nice ./NewNightlyTest.pl -nice -release -verbose -parallel -enable-linscan \
Reid Spencer	669ed45	2007-07-09 08:04:31 +0000	[diff] [blame]	930	-nickname NightlyTester -noexternals > output.log 2>&1
Reid Spencer	8284f1f	2004-09-05 20:07:26 +0000	[diff] [blame]	931	</pre>
Misha Brukman	fc1a27b	2005-03-10 22:51:59 +0000	[diff] [blame]	932	</div>
Reid Spencer	8284f1f	2004-09-05 20:07:26 +0000	[diff] [blame]	933
Patrick Jenkins	825c2a7	2006-08-11 23:27:02 +0000	[diff] [blame]	934	<p>It is also possible to specify the the location your nightly test results
				935	are submitted. You can do this by passing the command line option
				936	"-submit-server [server_address]" and "-submit-script [script_on_server]" to
				937	<tt>utils/NewNightlyTest.pl</tt>. For example, to submit to the llvm.org
				938	nightly test results page, you would invoke the nightly test script with
				939	"-submit-server llvm.org -submit-script /nightlytest/NightlyTestAccept.cgi".
				940	If these options are not specified, the nightly test script sends the results
				941	to the llvm.org nightly test results page.</p>
				942
				943	<p>Take a look at the <tt>NewNightlyTest.pl</tt> file to see what all of the
				944	flags and strings do. If you start running the nightly tests, please let us
				945	know. Thanks!</p>
Misha Brukman	fc1a27b	2005-03-10 22:51:59 +0000	[diff] [blame]	946
Misha Brukman	1d83e11	2004-03-01 18:21:04 +0000	[diff] [blame]	947	</div>
John Criswell	020cbd8	2003-10-10 18:42:49 +0000	[diff] [blame]	948
Brian Gaeke	af19f2e	2003-10-23 18:10:28 +0000	[diff] [blame]	949	<!-- *********************************************************************** -->
John Criswell	020cbd8	2003-10-10 18:42:49 +0000	[diff] [blame]	950
Misha Brukman	1d83e11	2004-03-01 18:21:04 +0000	[diff] [blame]	951	<hr>
				952	<address>
				953	<a href="http://jigsaw.w3.org/css-validator/check/referer"><img
Misha Brukman	4440870	2008-12-11 17:34:48 +0000	[diff] [blame]	954	src="http://jigsaw.w3.org/css-validator/images/vcss-blue" alt="Valid CSS"></a>
Misha Brukman	1d83e11	2004-03-01 18:21:04 +0000	[diff] [blame]	955	<a href="http://validator.w3.org/check/referer"><img
Misha Brukman	4440870	2008-12-11 17:34:48 +0000	[diff] [blame]	956	src="http://www.w3.org/Icons/valid-html401-blue" alt="Valid HTML 4.01"></a>
Brian Gaeke	af19f2e	2003-10-23 18:10:28 +0000	[diff] [blame]	957
John Criswell	c6e32eb	2005-05-13 19:48:07 +0000	[diff] [blame]	958	John T. Criswell, Reid Spencer, and Tanya Lattner<br>
Matthijs Kooijman	d30020a	2008-05-20 10:28:55 +0000	[diff] [blame]	959	<a href="http://llvm.org">The LLVM Compiler Infrastructure</a><br>
Misha Brukman	1d83e11	2004-03-01 18:21:04 +0000	[diff] [blame]	960	Last modified: $Date$
				961	</address>
Brian Gaeke	af19f2e	2003-10-23 18:10:28 +0000	[diff] [blame]	962	</body>
John Criswell	020cbd8	2003-10-10 18:42:49 +0000	[diff] [blame]	963	</html>