const uint32_t BranchProbability::D;
raw_ostream &BranchProbability::print(raw_ostream &OS) const {
- if (isUnknown())
- return OS << "?%";
-
// Get a percentage rounded to two decimal digits. This avoids
// implementation-defined rounding inside printf.
double Percent = rint(((double)N / D) * 100.0 * 100.0) / 100.0;
- return OS << format("0x%08" PRIx32 " / 0x%08" PRIx32 " = %.2f%%", N, D,
- Percent);
+ OS << format("0x%08" PRIx32 " / 0x%08" PRIx32 " = %.2f%%", N, D, Percent);
+ return OS;
}
void BranchProbability::dump() const { print(dbgs()) << '\n'; }
}
}
-BranchProbability
-BranchProbability::getBranchProbability(uint64_t Numerator,
- uint64_t Denominator) {
- assert(Numerator <= Denominator && "Probability cannot be bigger than 1!");
- // Scale down Denominator to fit in a 32-bit integer.
- int Scale = 0;
- while (Denominator > UINT32_MAX) {
- Denominator >>= 1;
- Scale++;
- }
- return BranchProbability(Numerator >> Scale, Denominator);
-}
-
// If ConstD is not zero, then replace D by ConstD so that division and modulo
// operations by D can be optimized, in case this function is not inlined by the
// compiler.