diff options
| -rw-r--r-- | lib/Support/APInt.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/lib/Support/APInt.cpp b/lib/Support/APInt.cpp index 6638fcc..daf2244 100644 --- a/lib/Support/APInt.cpp +++ b/lib/Support/APInt.cpp @@ -885,7 +885,7 @@ APInt llvm::APIntOps::RoundDoubleToAPInt(double Double, unsigned width) { return isNeg ? -Tmp : Tmp; } -/// RoundToDouble - This function convert this APInt to a double. +/// RoundToDouble - This function converts this APInt to a double. /// The layout for double is as following (IEEE Standard 754): /// -------------------------------------- /// | Sign Exponent Fraction Bias | @@ -895,6 +895,7 @@ APInt llvm::APIntOps::RoundDoubleToAPInt(double Double, unsigned width) { double APInt::roundToDouble(bool isSigned) const { // Handle the simple case where the value is contained in one uint64_t. + // It is wrong to optimize getWord(0) to VAL; there might be more than one word. if (isSingleWord() || getActiveBits() <= APINT_BITS_PER_WORD) { if (isSigned) { int64_t sext = (int64_t(getWord(0)) << (64-BitWidth)) >> (64-BitWidth); |