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Use array_pod_sort instead of std::sort for improved code size. 

Use SmallVector instead of std::vector for better speed when indirectbr has
few successors.

llvm-svn: 95879
This commit is contained in:
Jakob Stoklund Olesen 2010-02-11 18:06:56 +00:00
parent cccdc13662
commit 45396438c3
1 changed files with 2 additions and 2 deletions
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4
llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
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@ -2063,11 +2063,11 @@ void SelectionDAGBuilder::visitSwitch(SwitchInst &SI) {
void SelectionDAGBuilder::visitIndirectBr(IndirectBrInst &I) {
// Update machine-CFG edges with unique successors.
std::vector<BasicBlock*> succs;
SmallVector<BasicBlock*, 32> succs;
succs.reserve(I.getNumSuccessors());
for (unsigned i = 0, e = I.getNumSuccessors(); i != e; ++i)
succs.push_back(I.getSuccessor(i));
std::sort(succs.begin(), succs.end());
array_pod_sort(succs.begin(), succs.end());
succs.erase(std::unique(succs.begin(), succs.end()), succs.end());
for (unsigned i = 0, e = succs.size(); i != e; ++i)
CurMBB->addSuccessor(FuncInfo.MBBMap[succs[i]]);