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Cleanup: make std::pair usage slightly less indecipherable without actually naming variables!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135684 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -1389,23 +1389,24 @@ void IndVarSimplify::SimplifyIVUsersNoRewrite(Loop *L, SCEVExpander &Rewriter) {
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pushIVUsers(CurrIV, Simplified, SimpleIVUsers);
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while (!SimpleIVUsers.empty()) {
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std::pair<Instruction*, Instruction*> Use =SimpleIVUsers.pop_back_val();
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std::pair<Instruction*, Instruction*> UseOper =
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SimpleIVUsers.pop_back_val();
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// Bypass back edges to avoid extra work.
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if (Use.first == CurrIV) continue;
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if (UseOper.first == CurrIV) continue;
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if (EliminateIVUser(Use.first, Use.second)) {
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pushIVUsers(Use.second, Simplified, SimpleIVUsers);
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if (EliminateIVUser(UseOper.first, UseOper.second)) {
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pushIVUsers(UseOper.second, Simplified, SimpleIVUsers);
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continue;
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}
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if (CastInst *Cast = dyn_cast<CastInst>(Use.first)) {
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if (CastInst *Cast = dyn_cast<CastInst>(UseOper.first)) {
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bool IsSigned = Cast->getOpcode() == Instruction::SExt;
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if (IsSigned || Cast->getOpcode() == Instruction::ZExt) {
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CollectExtend(Cast, IsSigned, WI, SE, TD);
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}
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continue;
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}
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if (isSimpleIVUser(Use.first, L, SE)) {
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pushIVUsers(Use.first, Simplified, SimpleIVUsers);
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if (isSimpleIVUser(UseOper.first, L, SE)) {
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pushIVUsers(UseOper.first, Simplified, SimpleIVUsers);
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}
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}
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if (WI.WidestNativeType) {
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