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Reapply documentation changes from r184584.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184609 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Benjamin Kramer 2013-06-21 23:45:18 +00:00
parent 6f0ca0c590
commit 2ea475cddf
1 changed files with 7 additions and 0 deletions
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7
include/llvm/Support/BlockFrequency.h
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@ -30,12 +30,19 @@ class BlockFrequency {
public:
BlockFrequency(uint64_t Freq = 0) : Frequency(Freq) { }
/// \brief Returns the frequency of the entry block of the function.
static uint64_t getEntryFrequency() { return ENTRY_FREQ; }
/// \brief Returns the frequency as a fixpoint number scaled by the entry
/// frequency.
uint64_t getFrequency() const { return Frequency; }
/// \brief Multiplies with a branch probability. The computation will never
/// overflow.
BlockFrequency &operator*=(const BranchProbability &Prob);
const BlockFrequency operator*(const BranchProbability &Prob) const;
/// \brief Adds another block frequency using saturating arithmetic.
BlockFrequency &operator+=(const BlockFrequency &Freq);
const BlockFrequency operator+(const BlockFrequency &Freq) const;