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[CodeGen] Fix uninitialized variables exposed by r303084

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All other calls of analyzeBranch reset PredTBB and PredFBB, so I assume it's
expected behavior.

llvm-svn: 303581
This commit is contained in:
Vitaly Buka
2017-05-22 21:33:54 +00:00
parent 997f5f10c6
commit b238cb8fbc
1 changed files with 2 additions and 2 deletions
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4
llvm/lib/CodeGen/TailDuplicator.cpp
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@@ -749,7 +749,7 @@ bool TailDuplicator::canTailDuplicate(MachineBasicBlock *TailBB,
if (PredBB->succ_size() > 1)
return false;
MachineBasicBlock *PredTBB, *PredFBB;
MachineBasicBlock *PredTBB = nullptr, *PredFBB = nullptr;
SmallVector<MachineOperand, 4> PredCond;
if (TII->analyzeBranch(*PredBB, PredTBB, PredFBB, PredCond))
return false;
@@ -832,7 +832,7 @@ bool TailDuplicator::tailDuplicate(bool IsSimple, MachineBasicBlock *TailBB,
appendCopies(PredBB, CopyInfos, Copies);
// Simplify
MachineBasicBlock *PredTBB, *PredFBB;
MachineBasicBlock *PredTBB = nullptr, *PredFBB = nullptr;
SmallVector<MachineOperand, 4> PredCond;
TII->analyzeBranch(*PredBB, PredTBB, PredFBB, PredCond);