<li><b><a href="#selectiondag_sched">Scheduling and Formation</a></b> - This
phase takes the DAG of target instructions produced by the instruction selection
phase, determines an ordering of the instructions, then emits the instructions
-as <tt><a href="#machineinstr">MachineInstr</a></tt>s with that ordering.
+as <tt><a href="#machineinstr">MachineInstr</a></tt>s with that ordering. Note
+that we describe this in the <a href="#instselect">instruction selection
+section</a> because it operates on a <a
+href="#selectiondag_intro">SelectionDAG</a>.
</li>
<li><b><a href="#ssamco">SSA-based Machine Code Optimizations</a></b> - This
Selection DAG is destroyed.
</p>
+<p>Note that this phase is logically seperate from the instruction selection
+phase, but is tied to it closely in the code because it operates on
+SelectionDAGs.</p>
+
</div>
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