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Change LBH_TAKEN_WEIGHT to 124 (from 128). Right now, sum of
LBH_TAKEN_WEIGHT + LBH_NONTAKEN_WEIGHT = 128 which in _most_ cases reduce number of rounding errors. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136428 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -52,7 +52,7 @@ class BranchProbabilityAnalysis {
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// V
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// BB1<-+
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// | |
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// | | (Weight = 128)
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// | | (Weight = 124)
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// V |
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// BB2--+
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// |
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@ -60,10 +60,10 @@ class BranchProbabilityAnalysis {
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// V
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// BB3
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//
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// Probability of the edge BB2->BB1 = 128 / (128 + 4) = 0.9696..
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// Probability of the edge BB2->BB3 = 4 / (128 + 4) = 0.0303..
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// Probability of the edge BB2->BB1 = 124 / (124 + 4) = 0.96875
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// Probability of the edge BB2->BB3 = 4 / (124 + 4) = 0.03125
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static const uint32_t LBH_TAKEN_WEIGHT = 128;
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static const uint32_t LBH_TAKEN_WEIGHT = 124;
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static const uint32_t LBH_NONTAKEN_WEIGHT = 4;
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// Standard weight value. Used when none of the heuristics set weight for
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