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diff --git a/docs/CodeGenerator.html b/docs/CodeGenerator.html index bc99fb2492..7bbc7602a8 100644 --- a/docs/CodeGenerator.html +++ b/docs/CodeGenerator.html @@ -828,6 +828,15 @@ SelectionDAG-based instruction selection consists of the following steps: <p>After all of these steps are complete, the SelectionDAG is destroyed and the rest of the code generation passes are run.</p> +<p>One great way to visualize what is going on here is to take advantage of a +few LLC command line options. In particular, the <tt>-view-isel-dags</tt> +option pops up a window with the SelectionDAG input to the Select phase for all +of the code compiled (if you only get errors printed to the console while using +this, you probably <a href="ProgrammersManual.html#ViewGraph">need to configure +your system</a> to add support for it). The <tt>-view-sched-dags</tt> option +views the SelectionDAG output from the Select phase and input to the Scheduler +phase. +</p> </div> <!-- _______________________________________________________________________ --> |