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Add a missing doxygen comment for a helper method.

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llvm-svn: 144497
This commit is contained in:
Chandler Carruth 2011-11-13 11:34:55 +00:00
parent 535c0683ea
commit e85aeac703
1 changed files with 6 additions and 0 deletions
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6
lib/CodeGen/MachineBlockPlacement.cpp
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@ -275,6 +275,12 @@ static std::string getBlockNum(MachineBasicBlock *BB) {
}
#endif
/// \brief Mark a chain's successors as having one fewer preds.
///
/// When a chain is being merged into the "placed" chain, this routine will
/// quickly walk the successors of each block in the chain and mark them as
/// having one fewer active predecessor. It also adds any successors of this
/// chain which reach the zero-predecessor state to the worklist passed in.
void MachineBlockPlacement::markChainSuccessors(
BlockChain &Chain,
MachineBasicBlock *LoopHeaderBB,