diff options
Diffstat (limited to 'llvm/lib/CodeGen')
| -rw-r--r-- | llvm/lib/CodeGen/MachineOutliner.cpp | 19 |
1 files changed, 12 insertions, 7 deletions
diff --git a/llvm/lib/CodeGen/MachineOutliner.cpp b/llvm/lib/CodeGen/MachineOutliner.cpp index afee909eaa2..be12b207b89 100644 --- a/llvm/lib/CodeGen/MachineOutliner.cpp +++ b/llvm/lib/CodeGen/MachineOutliner.cpp @@ -210,17 +210,22 @@ public: return getOccurrenceCount(); } - /// Return the number of instructions it would take to outline this + /// Return the number of bytes it would take to outline this /// function. unsigned getOutliningCost() { - return (OccurrenceCount * MInfo.CallOverhead) + Sequence.size() + + return (OccurrenceCount * MInfo.CallOverhead) + MInfo.SequenceSize + MInfo.FrameOverhead; } + /// Return the size in bytes of the unoutlined sequences. + unsigned getNotOutlinedCost() { + return OccurrenceCount * MInfo.SequenceSize; + } + /// Return the number of instructions that would be saved by outlining /// this function. unsigned getBenefit() { - unsigned NotOutlinedCost = OccurrenceCount * Sequence.size(); + unsigned NotOutlinedCost = getNotOutlinedCost(); unsigned OutlinedCost = getOutliningCost(); return (NotOutlinedCost < OutlinedCost) ? 0 : NotOutlinedCost - OutlinedCost; @@ -1054,10 +1059,10 @@ unsigned MachineOutliner::findCandidates( R << "Did not outline " << NV("Length", StringLen) << " instructions" << " from " << NV("NumOccurrences", RepeatedSequenceLocs.size()) << " locations." - << " Instructions from outlining all occurrences (" + << " Bytes from outlining all occurrences (" << NV("OutliningCost", OF.getOutliningCost()) << ")" - << " >= Unoutlined instruction count (" - << NV("NotOutliningCost", StringLen * OF.getOccurrenceCount()) << ")" + << " >= Unoutlined instruction bytes (" + << NV("NotOutliningCost", OF.getNotOutlinedCost()) << ")" << " (Also found at: "; // Tell the user the other places the candidate was found. @@ -1378,7 +1383,7 @@ bool MachineOutliner::outline( MachineOptimizationRemark R(DEBUG_TYPE, "OutlinedFunction", MBB->findDebugLoc(MBB->begin()), MBB); R << "Saved " << NV("OutliningBenefit", OF.getBenefit()) - << " instructions by " + << " bytes by " << "outlining " << NV("Length", OF.Sequence.size()) << " instructions " << "from " << NV("NumOccurrences", OF.getOccurrenceCount()) << " locations. " |
