Branch probability as a non‐negative fraction no greater than one.
Synopsis
Declared in <llvm/Support/BranchProbability.h>
class BranchProbability;Description
Uses a fixed‐point‐like representation whose denominator is always the constant value 1<<31 for maximum precision.
Member Functions
Name |
Description |
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Constructors |
Dump this probability to the debug stream. |
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Return the complementary probability (1 minus this probability). |
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Return the fixed‐point numerator of this probability. |
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Return true if this probability is one (always taken). |
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Return true if this probability is unknown. |
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Return true if this probability is zero (never taken). |
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Multiplication operators |
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Multiplication assignment operators |
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Add two branch probabilities, saturating at one. |
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Add |
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Subtract |
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Subtract |
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Division operators |
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Division assignment operators |
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Compute pow(Probability, N). |
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Print this probability to |
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Scale a large integer. |
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Scale a large integer by the inverse. |
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Return this probability as a floating‐point value in [0, 1]. |
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Return true if this probability equals |
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Return true if this probability differs from |
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Return true if this probability is strictly less than |
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Return true if this probability is less than or equal to |
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Return true if this probability is greater than |
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Return true if this probability is greater than or equal to |
Static Member Functions
Name |
Description |
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Return the fixed denominator used by all branch probabilities ( |
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Return a probability representing one (always taken). |
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Create a probability from the raw fixed‐point numerator |
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Return an unknown branch probability. |
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Return a probability representing zero (never taken). |
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Non-Member Functions
Name |
Description |
Return the probability that conditional branch |
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Return the edge probability from |
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Return the probability that the latch of |
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Convert a branch probability into an unscaled edge weight. |
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Scale mass |
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