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Change std::list into a std::vector for IntervalSets. This reduces
compile time for 176.gcc from 5.6 secs to 4.7 secs. llvm-svn: 15072
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@ -53,7 +53,7 @@ namespace {
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const TargetMachine* tm_;
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const MRegisterInfo* mri_;
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LiveIntervals* li_;
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typedef std::list<LiveInterval*> IntervalPtrs;
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typedef std::vector<LiveInterval*> IntervalPtrs;
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IntervalPtrs unhandled_, fixed_, active_, inactive_, handled_, spilled_;
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std::auto_ptr<PhysRegTracker> prt_;
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@ -196,7 +196,8 @@ bool RA::linearScan()
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<< mf_->getFunction()->getName() << '\n');
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unhandled_.sort(less_ptr<LiveInterval>());
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std::sort(unhandled_.begin(), unhandled_.end(),
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greater_ptr<LiveInterval>());
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DEBUG(printIntervals("unhandled", unhandled_.begin(), unhandled_.end()));
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DEBUG(printIntervals("fixed", fixed_.begin(), fixed_.end()));
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DEBUG(printIntervals("active", active_.begin(), active_.end()));
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@ -204,8 +205,8 @@ bool RA::linearScan()
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while (!unhandled_.empty()) {
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// pick the interval with the earliest start point
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IntervalPtrs::value_type cur = unhandled_.front();
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unhandled_.pop_front();
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IntervalPtrs::value_type cur = unhandled_.back();
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unhandled_.pop_back();
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++numIterations;
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DEBUG(std::cerr << "\n*** CURRENT ***: " << *cur << '\n');
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