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Remove some unneeded branches. (spotted by Evan, thanks)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37198 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -595,6 +595,7 @@ bool BranchFolder::TailMergeBlocks(MachineFunction &MF) {
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// Reinsert an unconditional branch if needed.
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// Reinsert an unconditional branch if needed.
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// The 1 below can be either an original single predecessor, or a result
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// The 1 below can be either an original single predecessor, or a result
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// of removing blocks in TryMergeBlocks.
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// of removing blocks in TryMergeBlocks.
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PredBB = prior(I); // this may have been changed in TryMergeBlocks
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if (MergePotentials.size()==1 &&
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if (MergePotentials.size()==1 &&
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(MergePotentials.begin())->second != PredBB)
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(MergePotentials.begin())->second != PredBB)
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FixTail((MergePotentials.begin())->second, I, TII);
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FixTail((MergePotentials.begin())->second, I, TII);
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