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MachineSink: Sort the successors before trying to find SuccToSinkTo.

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Use stable_sort instead of sort. Follow-up to r161062.

rdar://11980766

llvm-svn: 161075
This commit is contained in:
Manman Ren 2012-07-31 20:45:38 +00:00
parent 3dc189f67b
commit b9e9c55911
1 changed files with 1 additions and 1 deletions
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2
lib/CodeGen/MachineSink.cpp
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@ -538,7 +538,7 @@ MachineBasicBlock *MachineSinking::FindSuccToSinkTo(MachineInstr *MI,
// we should sink to.
// We give successors with smaller loop depth higher priority.
SmallVector<MachineBasicBlock*, 4> Succs(MBB->succ_begin(), MBB->succ_end());
std::sort(Succs.begin(), Succs.end(), SuccessorSorter(LI));
std::stable_sort(Succs.begin(), Succs.end(), SuccessorSorter(LI));
for (SmallVector<MachineBasicBlock*, 4>::iterator SI = Succs.begin(),
E = Succs.end(); SI != E; ++SI) {
MachineBasicBlock *SuccBlock = *SI;