diff options
Diffstat (limited to 'lib/CodeGen/RegAllocLinearScan.cpp')
| -rw-r--r-- | lib/CodeGen/RegAllocLinearScan.cpp | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/lib/CodeGen/RegAllocLinearScan.cpp b/lib/CodeGen/RegAllocLinearScan.cpp index 285f493fff..0e52f46c6f 100644 --- a/lib/CodeGen/RegAllocLinearScan.cpp +++ b/lib/CodeGen/RegAllocLinearScan.cpp @@ -21,6 +21,7 @@ #include "llvm/Target/MRegisterInfo.h" #include "llvm/Target/TargetMachine.h" #include "Support/Debug.h" +#include "Support/Statistic.h" #include "Support/STLExtras.h" #include "LiveIntervals.h" #include "PhysRegTracker.h" @@ -33,6 +34,10 @@ using namespace llvm; namespace { + + Statistic<double> efficiency + ("regalloc", "Ratio of intervals processed over total intervals"); + class RA : public MachineFunctionPass { private: MachineFunction* mf_; @@ -178,7 +183,7 @@ void RA::linearScan() // pick the interval with the earliest start point IntervalPtrs::value_type cur = unhandled_.front(); unhandled_.pop_front(); - + ++efficiency; DEBUG(std::cerr << "\n*** CURRENT ***: " << *cur << '\n'); processActiveIntervals(cur); @@ -201,6 +206,7 @@ void RA::linearScan() DEBUG(printIntervals("inactive", inactive_.begin(), inactive_.end())); // DEBUG(verifyAssignment()); } + efficiency /= li_->getIntervals().size(); // expire any remaining active intervals for (IntervalPtrs::iterator i = active_.begin(); i != active_.end(); ++i) { |