diff options
Diffstat (limited to 'include/llvm/ADT/APInt.h')
| -rw-r--r-- | include/llvm/ADT/APInt.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/llvm/ADT/APInt.h b/include/llvm/ADT/APInt.h index b91d5dc..d1fd3e5 100644 --- a/include/llvm/ADT/APInt.h +++ b/include/llvm/ADT/APInt.h @@ -1193,6 +1193,12 @@ public: /// @brief Count the number of leading one bits. unsigned countLeadingOnes() const; + /// Computes the number of leading bits of this APInt that are equal to its + /// sign bit. + unsigned getNumSignBits() const { + return isNegative() ? countLeadingOnes() : countLeadingZeros(); + } + /// countTrailingZeros - This function is an APInt version of the /// countTrailingZeros_{32,64} functions in MathExtras.h. It counts /// the number of zeros from the least significant bit to the first set bit. |
