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-rw-r--r--include/llvm/Support/BranchProbability.h16
1 files changed, 9 insertions, 7 deletions
diff --git a/include/llvm/Support/BranchProbability.h b/include/llvm/Support/BranchProbability.h
index 7ba6491..2e81490 100644
--- a/include/llvm/Support/BranchProbability.h
+++ b/include/llvm/Support/BranchProbability.h
@@ -19,15 +19,9 @@
namespace llvm {
class raw_ostream;
-class BranchProbabilityInfo;
-class MachineBranchProbabilityInfo;
-class MachineBasicBlock;
// This class represents Branch Probability as a non-negative fraction.
class BranchProbability {
- friend class BranchProbabilityInfo;
- friend class MachineBranchProbabilityInfo;
- friend class MachineBasicBlock;
// Numerator
uint32_t N;
@@ -35,9 +29,17 @@ class BranchProbability {
// Denominator
uint32_t D;
+public:
BranchProbability(uint32_t n, uint32_t d);
-public:
+ uint32_t getNumerator() const { return N; }
+ uint32_t getDenominator() const { return D; }
+
+ // Return (1 - Probability).
+ BranchProbability getCompl() {
+ return BranchProbability(D - N, D);
+ }
+
raw_ostream &print(raw_ostream &OS) const;
void dump() const;
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