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Add a comment for a nasty short term hack.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46610 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng 2008-01-31 10:05:13 +00:00
parent bb81d97feb
commit 7bdc5f734f
1 changed files with 4 additions and 0 deletions
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4
lib/CodeGen/SelectionDAG/ScheduleDAG.cpp
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@ -741,6 +741,10 @@ void ScheduleDAG::EmitNode(SDNode *Node, unsigned InstanceNo,
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;