Add a comment for a nasty short term hack.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46610 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/ScheduleDAG.cpp b/lib/CodeGen/SelectionDAG/ScheduleDAG.cpp
index ac35b40..3873c33 100644
--- a/lib/CodeGen/SelectionDAG/ScheduleDAG.cpp
+++ b/lib/CodeGen/SelectionDAG/ScheduleDAG.cpp
@@ -741,6 +741,10 @@
unsigned NumLabels = 0;
MachineBasicBlock::iterator MBBI = BB->begin();
while (MBBI != BB->end()) {
+ // FIXME: This is a nasty short term workaround. For now, we are
+ // assuming there are two debug labels at the beginning of the
+ // entry block: one for dbg_func_start, one for the first
+ // dbg_stoppoint before actual code.
if (!MBBI->isDebugLabel() || ++NumLabels > 1)
break;
++MBBI;