diff options
| -rw-r--r-- | include/llvm/CodeGen/LiveIntervalAnalysis.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/include/llvm/CodeGen/LiveIntervalAnalysis.h b/include/llvm/CodeGen/LiveIntervalAnalysis.h index 473cc8e099..92c3b844c9 100644 --- a/include/llvm/CodeGen/LiveIntervalAnalysis.h +++ b/include/llvm/CodeGen/LiveIntervalAnalysis.h @@ -169,6 +169,15 @@ namespace llvm { return MBB2IdxMap[MBBNo].second; } + /// getIntervalSize - get the size of an interval in "units," + /// where every function is composed of one thousand units. This + /// measure scales properly with empty index slots in the function. + unsigned getScaledIntervalSize(LiveInterval& I) { + // Factor of 250 comes from 1000 units per function divided + // by four slots per instruction. + return (250 * I.getSize()) / i2miMap_.size(); + } + /// getMBBFromIndex - given an index in any instruction of an /// MBB return a pointer the MBB MachineBasicBlock* getMBBFromIndex(unsigned index) const { |