1 files changed, 11 insertions, 20 deletions
diff --git a/lib/Support/BlockFrequency.cpp b/lib/Support/BlockFrequency.cpp
index 00efe90..00cf75b 100644
--- a/lib/Support/BlockFrequency.cpp
+++ b/lib/Support/BlockFrequency.cpp
@@ -145,28 +145,19 @@ BlockFrequency::operator+(const BlockFrequency &Prob) const {
   return Freq;
 }
 
-uint32_t BlockFrequency::scale(const BranchProbability &Prob) {
-  return scale(Prob.getNumerator(), Prob.getDenominator());
-}
-
-void BlockFrequency::print(raw_ostream &OS) const {
-  // Convert fixed-point number to decimal.
-  OS << Frequency / getEntryFrequency() << ".";
-  uint64_t Rem = Frequency % getEntryFrequency();
-  uint64_t Eps = 1;
-  do {
-    Rem *= 10;
-    Eps *= 10;
-    OS << Rem / getEntryFrequency();
-    Rem = Rem % getEntryFrequency();
-  } while (Rem >= Eps/2);
-}
+BlockFrequency &BlockFrequency::operator>>=(const unsigned count) {
+  // Frequency can never be 0 by design.
+  assert(Frequency != 0);
 
-namespace llvm {
+  // Shift right by count.
+  Frequency >>= count;
 
-raw_ostream &operator<<(raw_ostream &OS, const BlockFrequency &Freq) {
-  Freq.print(OS);
-  return OS;
+  // Saturate to 1 if we are 0.
+  Frequency |= Frequency == 0;
+  return *this;
 }
 
+uint32_t BlockFrequency::scale(const BranchProbability &Prob) {
+  return scale(Prob.getNumerator(), Prob.getDenominator());
 }
+