ConstantInt better.
2. Add a getHashValue() method.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34641
91177308-0d34-0410-b5e6-
96231b3b80d8
return BitWidth - countLeadingZeros();
}
return BitWidth - countLeadingZeros();
}
- /// @returns a uint64_t value from this APInt. If this APInt contains a single
- /// word, just returns VAL, otherwise pVal[0].
- inline uint64_t getValue(bool isSigned = false) const {
+ /// This method attempts to return the value of this APInt as a zero extended
+ /// uint64_t. The bitwidth must be <= 64 or the value must fit within a
+ /// uint64_t. Otherwise an assertion will result.
+ /// @brief Get zero extended value
+ inline uint64_t getZExtValue() const {
- return isSigned ? int64_t(VAL << (64 - BitWidth)) >>
- (64 - BitWidth) : VAL;
- uint32_t n = getActiveBits();
- if (n <= 64)
- return pVal[0];
- assert(0 && "This APInt's bitwidth > 64");
+ return VAL;
+ assert(getActiveBits() <= 64 && "Too many bits for uint64_t");
+ return pVal[0];
+ }
+
+ /// This method attempts to return the value of this APInt as a sign extended
+ /// int64_t. The bit width must be <= 64 or the value must fit within an
+ /// int64_t. Otherwise an assertion will result.
+ /// @brief Get sign extended value
+ inline int64_t getSExtValue() const {
+ if (isSingleWord())
+ return int64_t(VAL << (APINT_BITS_PER_WORD - BitWidth)) >>
+ (APINT_BITS_PER_WORD - BitWidth);
+ assert(getActiveBits() <= 64 && "Too many bits for int64_t");
+ return int64_t(pVal[0]);
}
/// @returns the largest value for an APInt of the specified bit-width and
}
/// @returns the largest value for an APInt of the specified bit-width and
/// @brief Get the '0' value.
static APInt getNullValue(uint32_t numBits);
/// @brief Get the '0' value.
static APInt getNullValue(uint32_t numBits);
+ /// The hash value is computed as the sum of the words and the bit width.
+ /// @returns A hash value computed from the sum of the APInt words.
+ /// @brief Get a hash value based on this APInt
+ uint64_t getHashValue() const;
+
/// This converts the APInt to a boolean valy as a test against zero.
/// @brief Boolean conversion function.
inline bool getBoolValue() const {
/// This converts the APInt to a boolean valy as a test against zero.
/// @brief Boolean conversion function.
inline bool getBoolValue() const {