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Support: Extract ScaledNumbers::MinScale and MaxScale

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@211558 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Duncan P. N. Exon Smith
2014-06-24 00:15:19 +00:00
parent 747b62f119
commit 784bb5992a
3 changed files with 18 additions and 18 deletions
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lib/Analysis/BlockFrequencyInfoImpl.cpp
+5 -10
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@@ -27,11 +27,6 @@ using namespace llvm::bfi_detail;
// ScaledNumber implementation.
//
//===----------------------------------------------------------------------===//
#ifndef _MSC_VER
const int32_t ScaledNumberBase::MaxScale;
const int32_t ScaledNumberBase::MinScale;
#endif
static void appendDigit(std::string &Str, unsigned D) {
assert(D < 10);
Str += '0' + D % 10;
@@ -58,22 +53,22 @@ static bool doesRoundUp(char Digit) {
}
static std::string toStringAPFloat(uint64_t D, int E, unsigned Precision) {
assert(E >= ScaledNumberBase::MinScale);
assert(E <= ScaledNumberBase::MaxScale);
assert(E >= ScaledNumbers::MinScale);
assert(E <= ScaledNumbers::MaxScale);
// Find a new E, but don't let it increase past MaxScale.
int LeadingZeros = ScaledNumberBase::countLeadingZeros64(D);
int NewE = std::min(ScaledNumberBase::MaxScale, E + 63 - LeadingZeros);
int NewE = std::min(ScaledNumbers::MaxScale, E + 63 - LeadingZeros);
int Shift = 63 - (NewE - E);
assert(Shift <= LeadingZeros);
assert(Shift == LeadingZeros || NewE == ScaledNumberBase::MaxScale);
assert(Shift == LeadingZeros || NewE == ScaledNumbers::MaxScale);
D <<= Shift;
E = NewE;
// Check for a denormal.
unsigned AdjustedE = E + 16383;
if (!(D >> 63)) {
assert(E == ScaledNumberBase::MaxScale);
assert(E == ScaledNumbers::MaxScale);
AdjustedE = 0;
}