vendor/llvm/llvm-trunk-r303197

1 files changed, 8 insertions, 5 deletions

diff --git a/lib/Analysis/ProfileSummaryInfo.cpp b/lib/Analysis/ProfileSummaryInfo.cpp
index 1a53a8ed4283..502f4205b689 100644
--- a/lib/Analysis/ProfileSummaryInfo.cpp
+++ b/lib/Analysis/ProfileSummaryInfo.cpp
@@ -75,11 +75,14 @@ ProfileSummaryInfo::getProfileCount(const Instruction *Inst,
     return None;
   assert((isa<CallInst>(Inst) || isa<InvokeInst>(Inst)) &&
          "We can only get profile count for call/invoke instruction.");
-  // Check if there is a profile metadata on the instruction. If it is present,
-  // determine hotness solely based on that.
-  uint64_t TotalCount;
-  if (Inst->extractProfTotalWeight(TotalCount))
-    return TotalCount;
+  if (computeSummary() && Summary->getKind() == ProfileSummary::PSK_Sample) {
+    // In sample PGO mode, check if there is a profile metadata on the
+    // instruction. If it is present, determine hotness solely based on that,
+    // since the sampled entry count may not be accurate.
+    uint64_t TotalCount;
+    if (Inst->extractProfTotalWeight(TotalCount))
+      return TotalCount;
+  }
   if (BFI)
     return BFI->getBlockProfileCount(Inst->getParent());
   return None;