[PGO] Move profile summary interface/impl into InstrProf.[*] /NFC
llvm-svn: 257819
diff --git a/llvm/lib/ProfileData/InstrProf.cpp b/llvm/lib/ProfileData/InstrProf.cpp
index d677763..f856c25 100644
--- a/llvm/lib/ProfileData/InstrProf.cpp
+++ b/llvm/lib/ProfileData/InstrProf.cpp
@@ -599,4 +599,39 @@
sys::swapByteOrder<uint32_t>(NumValueKinds);
}
+// The argument to this method is a vector of cutoff percentages and the return
+// value is a vector of (Cutoff, MinBlockCount, NumBlocks) triplets.
+void ProfileSummary::computeDetailedSummary() {
+ if (DetailedSummaryCutoffs.empty())
+ return;
+ auto Iter = CountFrequencies.begin();
+ auto End = CountFrequencies.end();
+ std::sort(DetailedSummaryCutoffs.begin(), DetailedSummaryCutoffs.end());
+
+ uint32_t BlocksSeen = 0;
+ uint64_t CurrSum = 0, Count;
+
+ for (uint32_t Cutoff : DetailedSummaryCutoffs) {
+ assert(Cutoff <= 999999);
+ APInt Temp(128, TotalCount);
+ APInt N(128, Cutoff);
+ APInt D(128, ProfileSummary::Scale);
+ Temp *= N;
+ Temp = Temp.sdiv(D);
+ uint64_t DesiredCount = Temp.getZExtValue();
+ assert(DesiredCount <= TotalCount);
+ while (CurrSum < DesiredCount && Iter != End) {
+ Count = Iter->first;
+ uint32_t Freq = Iter->second;
+ CurrSum += (Count * Freq);
+ BlocksSeen += Freq;
+ Iter++;
+ }
+ assert(CurrSum >= DesiredCount);
+ ProfileSummaryEntry PSE = {Cutoff, Count, BlocksSeen};
+ DetailedSummary.push_back(PSE);
+ }
+ return;
+}
+
}