Changes in directory llvm/docs:
TestingGuide.html updated: 1.41 -> 1.42 --- Log message: Add some info about the pipelines and redirection. --- Diffs of the changes: (+19 -1) TestingGuide.html | 20 +++++++++++++++++++- 1 files changed, 19 insertions(+), 1 deletion(-) Index: llvm/docs/TestingGuide.html diff -u llvm/docs/TestingGuide.html:1.41 llvm/docs/TestingGuide.html:1.42 --- llvm/docs/TestingGuide.html:1.41 Sat Apr 14 16:46:15 2007 +++ llvm/docs/TestingGuide.html Sat Apr 14 18:27:06 2007 @@ -323,6 +323,24 @@ any process in the pipeline fails, the entire line (and test case) fails too. </p> + <p>As with a Unix shell, the RUN: lines permit pipelines and I/O redirection + to be used. However, the usage is slightly different than for Bash. To check + what's legal, see the documentation for the + <a href="http://www.tcl.tk/man/tcl8.5/TclCmd/exec.htm#M2";>Tcl exec</a> + command and the + <a href="http://www.tcl.tk/man/tcl8.5/tutorial/Tcl26.html";>tutorial</a>. + The major differences are:</p> + <ul> + <li>You can't do <tt>2>&1</tt>. That will cause Tcl to write to a + file named <tt>&1</tt>. Usually this is done to get stderr to go through + a pipe. You can do that in tcl with <tt>|&</tt> so replace this idiom: + <tt>... 2>&1 | grep</tt> with <tt>... |& grep</tt></li> + <li>You can only redirect to a file, not to another descriptor and not from + a here document.</li> + <li>tcl supports redirecting to open files with the @ syntax but you + shouldn't use that here.</li> + </ul> + <p> Below is an example of legal RUN lines in a <tt>.ll</tt> file:</p> <pre> ; RUN: llvm-as < %s | llvm-dis > %t1 @@ -756,7 +774,7 @@ John T. Criswell, Reid Spencer, and Tanya Lattner<br> <a href="http://llvm.org";>The LLVM Compiler Infrastructure</a><br/> - Last modified: $Date: 2007/04/14 21:46:15 $ + Last modified: $Date: 2007/04/14 23:27:06 $ </address> </body> </html> _______________________________________________ llvm-commits mailing list [EMAIL PROTECTED] http://lists.cs.uiuc.edu/mailman/listinfo/llvm-commits
