/// \brief Calculate auxiliary information for a virtual register such as its
/// spill weight and allocation hint.
class VirtRegAuxInfo {
+ public:
+ typedef float (*NormalizingFn)(float, unsigned);
+
+ private:
MachineFunction &MF;
LiveIntervals &LIS;
const MachineLoopInfo &Loops;
const MachineBlockFrequencyInfo &MBFI;
DenseMap<unsigned, float> Hint;
+ NormalizingFn normalize;
+
public:
VirtRegAuxInfo(MachineFunction &mf, LiveIntervals &lis,
const MachineLoopInfo &loops,
- const MachineBlockFrequencyInfo &mbfi)
- : MF(mf), LIS(lis), Loops(loops), MBFI(mbfi) {}
+ const MachineBlockFrequencyInfo &mbfi,
+ NormalizingFn norm = normalizeSpillWeight)
+ : MF(mf), LIS(lis), Loops(loops), MBFI(mbfi), normalize(norm) {}
/// \brief (re)compute li's spill weight and allocation hint.
void calculateSpillWeightAndHint(LiveInterval &li);
/// live intervals.
void calculateSpillWeightsAndHints(LiveIntervals &LIS, MachineFunction &MF,
const MachineLoopInfo &MLI,
- const MachineBlockFrequencyInfo &MBFI);
+ const MachineBlockFrequencyInfo &MBFI,
+ VirtRegAuxInfo::NormalizingFn norm =
+ normalizeSpillWeight);
}
#endif // LLVM_CODEGEN_CALCSPILLWEIGHTS_H