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Correctly compute the ration of iterations/#intervals.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14626 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Alkis Evlogimenos
2004-07-04 17:23:35 +00:00
parent 38343f6cfe
commit c156095b17
1 changed files with 6 additions and 2 deletions
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8
lib/CodeGen/RegAllocLinearScan.cpp
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@ -38,6 +38,9 @@ namespace {
Statistic<double> efficiency Statistic<double> efficiency
("regalloc", "Ratio of intervals processed over total intervals"); ("regalloc", "Ratio of intervals processed over total intervals");
static unsigned numIterations = 0;
static unsigned numIntervals = 0;
class RA : public MachineFunctionPass { class RA : public MachineFunctionPass {
private: private:
MachineFunction* mf_; MachineFunction* mf_;
@ -183,7 +186,7 @@ void RA::linearScan()
// pick the interval with the earliest start point // pick the interval with the earliest start point
IntervalPtrs::value_type cur = unhandled_.front(); IntervalPtrs::value_type cur = unhandled_.front();
unhandled_.pop_front(); unhandled_.pop_front();
++efficiency; ++numIterations;
DEBUG(std::cerr << "\n*** CURRENT ***: " << *cur << '\n'); DEBUG(std::cerr << "\n*** CURRENT ***: " << *cur << '\n');
processActiveIntervals(cur); processActiveIntervals(cur);
@ -206,7 +209,8 @@ void RA::linearScan()
DEBUG(printIntervals("inactive", inactive_.begin(), inactive_.end())); DEBUG(printIntervals("inactive", inactive_.begin(), inactive_.end()));
// DEBUG(verifyAssignment()); // DEBUG(verifyAssignment());
} }
efficiency /= li_->getIntervals().size(); numIntervals += li_->getIntervals().size();
efficiency = double(numIterations) / double(numIntervals);
// expire any remaining active intervals // expire any remaining active intervals
for (IntervalPtrs::iterator i = active_.begin(); i != active_.end(); ++i) { for (IntervalPtrs::iterator i = active_.begin(); i != active_.end(); ++i) {