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Add efficiency statistic.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14590 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Alkis Evlogimenos 2004-07-04 07:59:06 +00:00
parent 3b94a5142c
commit d55b2b1067
1 changed files with 7 additions and 1 deletions
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8
lib/CodeGen/RegAllocLinearScan.cpp
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@ -21,6 +21,7 @@
#include "llvm/Target/MRegisterInfo.h" #include "llvm/Target/MRegisterInfo.h"
#include "llvm/Target/TargetMachine.h" #include "llvm/Target/TargetMachine.h"
#include "Support/Debug.h" #include "Support/Debug.h"
#include "Support/Statistic.h"
#include "Support/STLExtras.h" #include "Support/STLExtras.h"
#include "LiveIntervals.h" #include "LiveIntervals.h"
#include "PhysRegTracker.h" #include "PhysRegTracker.h"
@ -33,6 +34,10 @@
using namespace llvm; using namespace llvm;
namespace { namespace {
Statistic<double> efficiency
("regalloc", "Ratio of intervals processed over total intervals");
class RA : public MachineFunctionPass { class RA : public MachineFunctionPass {
private: private:
MachineFunction* mf_; MachineFunction* mf_;
@ -178,7 +183,7 @@ 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;
DEBUG(std::cerr << "\n*** CURRENT ***: " << *cur << '\n'); DEBUG(std::cerr << "\n*** CURRENT ***: " << *cur << '\n');
processActiveIntervals(cur); processActiveIntervals(cur);
@ -201,6 +206,7 @@ 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();
// 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) {