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add a stub for futher description of filecheck. 

llvm-svn: 79106
This commit is contained in:
Chris Lattner 2009-08-15 15:40:48 +00:00
parent 878e2b7deb
commit 7e11b725f4
1 changed files with 21 additions and 0 deletions
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llvm/docs/TestingGuide.html
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@ -29,6 +29,7 @@
<li><a href="#dgstructure">DejaGNU structure</a>
<ul>
<li><a href="#dgcustom">Writing new DejaGNU tests</a></li>
<li><a href="#FileCheck">The FileCheck utility</a></li>
<li><a href="#dgvars">Variables and substitutions</a></li>
<li><a href="#dgfeatures">Other features</a></li>
</ul>
@ -447,6 +448,26 @@ negatives).</p>
</div>
<!-- _______________________________________________________________________ -->
<div class="doc_subsection"><a name="FileCheck">The FileCheck utility</a></div>
<!-- _______________________________________________________________________ -->
<div class="doc_text">
<p>A powerful feature of the RUN: lines is that it allows any arbitrary commands
to be executed as part of the test harness. While standard (portable) unix
tools like 'grep' work fine on run lines, as you see above, there are a lot
of caveats due to interaction with Tcl syntax, and we want to make that the
run lines are portable to a wide range of systems. Another major problem is
that grep is not very good at checking to verify that the output of a tools
contains a series of different output in a specific order. The FileCheck
tool was designed to help with these problems.</p>
<!-- http://llvm.org/cmds/FileCheck.html -->
</div>
<!-- _______________________________________________________________________ -->
<div class="doc_subsection"><a name="dgvars">Variables and substitutions</a></div>
<!-- _______________________________________________________________________ -->