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[MBP] tuple->pair. NFC. 

std::pair has a trivial copy ctor, std::tuple doesn't.
This commit is contained in:
Benjamin Kramer 2020-05-02 20:18:09 +02:00
parent ae23bd3577
commit 97f92261df
1 changed files with 2 additions and 2 deletions
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4
llvm/lib/CodeGen/MachineBlockPlacement.cpp
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@ -1570,7 +1570,7 @@ MachineBlockPlacement::selectBestSuccessor(
// For blocks with CFG violations, we may be able to lay them out anyway with
// tail-duplication. We keep this vector so we can perform the probability
// calculations the minimum number of times.
SmallVector<std::tuple<BranchProbability, MachineBasicBlock *>, 4>
SmallVector<std::pair<BranchProbability, MachineBasicBlock *>, 4>
DupCandidates;
for (MachineBasicBlock *Succ : Successors) {
auto RealSuccProb = MBPI->getEdgeProbability(BB, Succ);
@ -1584,7 +1584,7 @@ MachineBlockPlacement::selectBestSuccessor(
Chain, BlockFilter)) {
// If tail duplication would make Succ profitable, place it.
if (allowTailDupPlacement() && shouldTailDuplicate(Succ))
DupCandidates.push_back(std::make_tuple(SuccProb, Succ));
DupCandidates.emplace_back(SuccProb, Succ);
continue;
}