diff options
| author | Chris Lattner <sabre@nondot.org> | 2002-11-08 06:50:02 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2002-11-08 06:50:02 +0000 |
| commit | a4e7c4ea68ada98149d732ed62241e5a6099c3d5 (patch) | |
| tree | 9aec302706c5e02457d59100590956d184a917d6 /docs/ProgrammersManual.html | |
| parent | b16fb0db91f620618f00265d95a1cc255bfa234a (diff) | |
Add some notes about DEBUG flag
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4624 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'docs/ProgrammersManual.html')
| -rw-r--r-- | docs/ProgrammersManual.html | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/docs/ProgrammersManual.html b/docs/ProgrammersManual.html index d07fc4cd3e..26d4550087 100644 --- a/docs/ProgrammersManual.html +++ b/docs/ProgrammersManual.html @@ -349,8 +349,15 @@ Then you can run your pass like this:<p> Using the <tt>DEBUG()</tt> macro instead of a home brewed solution allows you to now have to create "yet another" command line option for the debug output for -your pass. Note that <tt>DEBUG()</tt> macros are disabled for optimized -builds, so they do not cause a performance impact at all.<p> +your pass. Note that <tt>DEBUG()</tt> macros are disabled for optimized builds, +so they do not cause a performance impact at all (for the same reason, they +should also not contain side-effects!).<p> + +One additional nice thing about the <tt>DEBUG()</tt> macro is that you can +enable or disable it directly in gdb. Just use "<tt>set DebugFlag=0</tt>" or +"<tt>set DebugFlag=1</tt>" from the gdb if the program is running. If the +program hasn't been started yet, you can always just run it with +<tt>-debug</tt>.<p> <!-- ======================================================================= --> @@ -1769,6 +1776,6 @@ pointer to the parent Function. <a href="mailto:sabre@nondot.org">Chris Lattner</a></address> <!-- Created: Tue Aug 6 15:00:33 CDT 2002 --> <!-- hhmts start --> -Last modified: Sun Oct 20 21:37:06 CDT 2002 +Last modified: Fri Nov 8 00:48:37 CST 2002 <!-- hhmts end --> </font></body></html> |