diff options
Diffstat (limited to 'llvm/lib/Analysis/ModuleSummaryAnalysis.cpp')
| -rw-r--r-- | llvm/lib/Analysis/ModuleSummaryAnalysis.cpp | 21 |
1 files changed, 18 insertions, 3 deletions
diff --git a/llvm/lib/Analysis/ModuleSummaryAnalysis.cpp b/llvm/lib/Analysis/ModuleSummaryAnalysis.cpp index cf2fe77..9293f60 100644 --- a/llvm/lib/Analysis/ModuleSummaryAnalysis.cpp +++ b/llvm/lib/Analysis/ModuleSummaryAnalysis.cpp @@ -273,9 +273,24 @@ computeFunctionSummary(ModuleSummaryIndex &Index, const Module &M, // to record the call edge to the alias in that case. Eventually // an alias summary will be created to associate the alias and // aliasee. - CallGraphEdges[Index.getOrInsertValueInfo( - cast<GlobalValue>(CalledValue))] - .updateHotness(Hotness); + auto &ValueInfo = CallGraphEdges[Index.getOrInsertValueInfo( + cast<GlobalValue>(CalledValue))]; + ValueInfo.updateHotness(Hotness); + // Add the relative block frequency to CalleeInfo if there is no profile + // information. + if (BFI != nullptr && Hotness == CalleeInfo::HotnessType::Unknown) { + auto BBFreq = BFI->getBlockFreq(&BB).getFrequency(); + // FIXME: This might need some scaling to prevent BBFreq values from + // being rounded down to 0. + auto EntryFreq = BFI->getEntryFreq(); + // Block frequencies can be directly set for a block and so we need to + // handle the case of entry frequency being 0. + if (EntryFreq) + BBFreq /= EntryFreq; + else + BBFreq = 0; + ValueInfo.updateRelBlockFreq(BBFreq); + } } else { // Skip inline assembly calls. if (CI && CI->isInlineAsm()) |