#define LLVM_APINT_H
#include "llvm/Support/DataTypes.h"
+#include <cassert>
#include <string>
namespace llvm {
+/// Forward declaration.
+class APInt;
+namespace APIntOps {
+ APInt udiv(const APInt& LHS, const APInt& RHS);
+ APInt urem(const APInt& LHS, const APInt& RHS);
+}
+
//===----------------------------------------------------------------------===//
// APInt Class
//===----------------------------------------------------------------------===//
/// APInt - This class represents arbitrary precision constant integral values.
/// It is a functional replacement for common case unsigned integer type like
/// "unsigned", "unsigned long" or "uint64_t", but also allows non-byte-width
-/// integer type and large integer value types such as 3-bits, 15-bits, or more
+/// integer sizes and large integer value types such as 3-bits, 15-bits, or more
/// than 64-bits of precision. APInt provides a variety of arithmetic operators
-/// and methods to manipulate integer values of any bit-width. It supports not
-/// only all the operations of uint64_t but also bitwise manipulation.
+/// and methods to manipulate integer values of any bit-width. It supports both
+/// the typical integer arithmetic and comparison operations as well as bitwise
+/// manipulation.
///
-/// @brief Class for arbitrary precision integers.
-///
-/// Note: In this class, all bit/byte/word positions are zero-based.
+/// The class has several invariants worth noting:
+/// * All bit, byte, and word positions are zero-based.
+/// * Once the bit width is set, it doesn't change except by the Truncate,
+/// SignExtend, or ZeroExtend operations.
+/// * All binary operators must be on APInt instances of the same bit width.
+/// Attempting to use these operators on instances with different bit
+/// widths will yield an assertion.
+/// * The value is stored canonically as an unsigned value. For operations
+/// where it makes a difference, there are both signed and unsigned variants
+/// of the operation. For example, sdiv and udiv. However, because the bit
+/// widths must be the same, operations such as Mul and Add produce the same
+/// results regardless of whether the values are interpreted as signed or
+/// not.
+/// * In general, the class tries to follow the style of computation that LLVM
+/// uses in its IR. This simplifies its use for LLVM.
///
+/// @brief Class for arbitrary precision integers.
class APInt {
- /// Friend Functions of APInt declared here. For detailed comments,
- /// see bottom of this file.
- friend bool isIntN(unsigned N, const APInt& APIVal);
- friend APInt ByteSwap(const APInt& APIVal);
- friend APInt LogBase2(const APInt& APIVal);
- friend double APIntToDouble(const APInt& APIVal);
- friend float APIntToFloat(const APInt& APIVal);
-
- unsigned bitsnum; ///< The number of bits.
- bool isSigned; ///< The sign flag for this APInt.
+public:
+ uint32_t BitWidth; ///< The number of bits in this APInt.
/// This union is used to store the integer value. When the
/// integer bit-width <= 64, it uses VAL;
/// This enum is just used to hold a constant we needed for APInt.
enum {
- APINT_BITS_PER_WORD = sizeof(uint64_t) * 8
+ APINT_BITS_PER_WORD = sizeof(uint64_t) * 8,
+ APINT_WORD_SIZE = sizeof(uint64_t)
};
/// Here one word's bitwidth equals to that of uint64_t.
/// @returns the number of words to hold the integer value of this APInt.
/// @brief Get the number of words.
- inline unsigned numWords() const {
- return bitsnum < 1 ? 0 : (bitsnum + APINT_BITS_PER_WORD - 1) /
- APINT_BITS_PER_WORD;
+ inline uint32_t getNumWords() const {
+ return (BitWidth + APINT_BITS_PER_WORD - 1) / APINT_BITS_PER_WORD;
}
/// @returns true if the number of bits <= 64, false otherwise.
/// @brief Determine if this APInt just has one word to store value.
- inline bool isSingleWord() const
- { return bitsnum <= APINT_BITS_PER_WORD; }
+ inline bool isSingleWord() const {
+ return BitWidth <= APINT_BITS_PER_WORD;
+ }
/// @returns the word position for the specified bit position.
- static inline unsigned whichWord(unsigned bitPosition)
- { return bitPosition / APINT_BITS_PER_WORD; }
-
- /// @returns the byte position for the specified bit position.
- static inline unsigned whichByte(unsigned bitPosition);
+ static inline uint32_t whichWord(uint32_t bitPosition) {
+ return bitPosition / APINT_BITS_PER_WORD;
+ }
/// @returns the bit position in a word for the specified bit position
/// in APInt.
- static inline unsigned whichBit(unsigned bitPosition)
- { return bitPosition % APINT_BITS_PER_WORD; }
+ static inline uint32_t whichBit(uint32_t bitPosition) {
+ return bitPosition % APINT_BITS_PER_WORD;
+ }
/// @returns a uint64_t type integer with just bit position at
/// "whichBit(bitPosition)" setting, others zero.
- static inline uint64_t maskBit(unsigned bitPosition)
- { return (static_cast<uint64_t>(1)) << whichBit(bitPosition); }
+ static inline uint64_t maskBit(uint32_t bitPosition) {
+ return (static_cast<uint64_t>(1)) << whichBit(bitPosition);
+ }
- inline void TruncToBits() {
+ /// This method is used internally to clear the to "N" bits that are not used
+ /// by the APInt. This is needed after the most significant word is assigned
+ /// a value to ensure that those bits are zero'd out.
+ /// @brief Clear high order bits
+ inline void clearUnusedBits() {
if (isSingleWord())
- VAL &= ~uint64_t(0ULL) >> (APINT_BITS_PER_WORD - bitsnum);
+ VAL &= ~uint64_t(0ULL) >> (APINT_BITS_PER_WORD - BitWidth);
else
- pVal[numWords() - 1] &= ~uint64_t(0ULL) >>
- (APINT_BITS_PER_WORD - (whichBit(bitsnum - 1) + 1));
+ pVal[getNumWords() - 1] &= ~uint64_t(0ULL) >>
+ (APINT_BITS_PER_WORD - (whichBit(BitWidth - 1) + 1));
}
/// @returns the corresponding word for the specified bit position.
- inline uint64_t& getWord(unsigned bitPosition)
- { return isSingleWord() ? VAL : pVal[whichWord(bitPosition)]; }
+ /// @brief Get the word corresponding to a bit position
+ inline uint64_t getWord(uint32_t bitPosition) const {
+ return isSingleWord() ? VAL : pVal[whichWord(bitPosition)];
+ }
- /// @returns the corresponding word for the specified bit position.
- /// This is a constant version.
- inline uint64_t getWord(unsigned bitPosition) const
- { return isSingleWord() ? VAL : pVal[whichWord(bitPosition)]; }
+ /// This is used by the constructors that take string arguments.
+ /// @brief Converts a char array into an APInt
+ void fromString(uint32_t numBits, const char *StrStart, uint32_t slen,
+ uint8_t radix);
+
+ /// This is used by the toString method to divide by the radix. It simply
+ /// provides a more convenient form of divide for internal use.
+ /// @brief An internal division function for dividing APInts.
+ static void divide(const APInt LHS, uint32_t lhsWords,
+ const APInt &RHS, uint32_t rhsWords,
+ APInt *Quotient, APInt *Remainder);
+
+#ifndef NDEBUG
+ /// @brief debug method
+ void dump() const;
+#endif
public:
- /// @brief Create a new APInt of numBits bit-width, and initialized as val.
- APInt(uint64_t val = 0, unsigned numBits = APINT_BITS_PER_WORD,
- bool sign = false);
+ /// @brief Create a new APInt of numBits width, initialized as val.
+ APInt(uint32_t numBits, uint64_t val);
- /// @brief Create a new APInt of numBits bit-width, and initialized as
- /// bigVal[].
- APInt(unsigned numBits, uint64_t bigVal[], bool sign = false);
+ /// Note that numWords can be smaller or larger than the corresponding bit
+ /// width but any extraneous bits will be dropped.
+ /// @brief Create a new APInt of numBits width, initialized as bigVal[].
+ APInt(uint32_t numBits, uint32_t numWords, uint64_t bigVal[]);
/// @brief Create a new APInt by translating the string represented
/// integer value.
- APInt(std::string& Val, uint8_t radix = 10, bool sign = false);
+ APInt(uint32_t numBits, const std::string& Val, uint8_t radix);
+
+ /// @brief Create a new APInt by translating the char array represented
+ /// integer value.
+ APInt(uint32_t numBits, const char StrStart[], uint32_t slen, uint8_t radix);
/// @brief Copy Constructor.
APInt(const APInt& API);
/// Increments the APInt by one.
/// @brief Postfix increment operator.
- const APInt operator++(int);
+ inline const APInt operator++(int) {
+ APInt API(*this);
+ ++(*this);
+ return API;
+ }
/// Increments the APInt by one.
/// @brief Prefix increment operator.
/// Decrements the APInt by one.
/// @brief Postfix decrement operator.
- const APInt operator--(int);
+ inline const APInt operator--(int) {
+ APInt API(*this);
+ --(*this);
+ return API;
+ }
/// Decrements the APInt by one.
/// @brief Prefix decrement operator.
/// @brief Bitwise XOR assignment operator.
APInt& operator^=(const APInt& RHS);
- /// Left-shift the APInt by shiftAmt and assigns the result to this APInt.
- /// @brief Left-shift assignment operator.
- APInt& operator<<=(unsigned shiftAmt);
-
- /// Right-shift the APInt by shiftAmt and assigns the result to this APInt.
- /// @brief Right-shift assignment operator.
- APInt& operator>>=(unsigned shiftAmt);
-
/// Performs a bitwise complement operation on this APInt.
/// @brief Bitwise complement operator.
APInt operator~() const;
/// @brief Multiplication assignment operator.
APInt& operator*=(const APInt& RHS);
- /// Divides this APInt by the given APInt &RHS and
- /// assigns the result to this APInt.
- /// @brief Division assignment operator.
- APInt& operator/=(const APInt& RHS);
-
/// Adds this APInt by the given APInt& RHS and
/// assigns the result to this APInt.
/// @brief Addition assignment operator.
/// @brief Subtraction assignment operator.
APInt& operator-=(const APInt& RHS);
- /// Yields the remainder from the division of this APInt by
- /// the given APInt& RHS and assigns the remainder to this APInt.
- /// @brief Remainder assignment operator.
- APInt& operator%=(const APInt& RHS);
-
/// Performs bitwise AND operation on this APInt and
/// the given APInt& RHS.
/// @brief Bitwise AND operator.
/// @brief Bitwise XOR operator.
APInt operator^(const APInt& RHS) const;
- /// Performs logical AND operation on this APInt and the given APInt& RHS.
- /// @brief Logical AND operator.
- bool operator&&(const APInt& RHS) const;
-
- /// Performs logical OR operation on this APInt and the given APInt& RHS.
- /// @brief Logical OR operator.
- bool operator||(const APInt& RHS) const;
-
/// Performs logical negation operation on this APInt.
/// @brief Logical negation operator.
bool operator !() const;
/// @brief Multiplication operator.
APInt operator*(const APInt& RHS) const;
- /// Divides this APInt by the given APInt& RHS.
- /// @brief Division operator.
- APInt operator/(const APInt& RHS) const;
-
- /// Yields the remainder from the division of
- /// this APInt and the given APInt& RHS.
- /// @brief Remainder operator.
- APInt operator%(const APInt& RHS) const;
-
/// Adds this APInt by the given APInt& RHS.
/// @brief Addition operator.
APInt operator+(const APInt& RHS) const;
/// @brief Subtraction operator.
APInt operator-(const APInt& RHS) const;
- /// Left-shift the APInt by shiftAmt.
- /// @brief Left-shift operator.
- APInt operator<<(unsigned shiftAmt) const;
-
- /// Right-shift the APInt by shiftAmt.
- /// @brief Right-shift operator.
- APInt operator>>(unsigned shiftAmt) const;
+ /// @brief Unary negation operator
+ inline APInt operator-() const {
+ return APInt(BitWidth, 0) - (*this);
+ }
/// @brief Array-indexing support.
- bool operator[](unsigned bitPosition) const;
+ bool operator[](uint32_t bitPosition) const;
/// Compare this APInt with the given APInt& RHS
/// for the validity of the equality relationship.
/// @brief Equality operator.
bool operator==(const APInt& RHS) const;
+ /// Compare this APInt with the given uint64_t value
+ /// for the validity of the equality relationship.
+ /// @brief Equality operator.
+ bool operator==(uint64_t Val) const;
+
/// Compare this APInt with the given APInt& RHS
/// for the validity of the inequality relationship.
/// @brief Inequality operator.
- bool operator!=(const APInt& RHS) const;
+ inline bool operator!=(const APInt& RHS) const {
+ return !((*this) == RHS);
+ }
+
+ /// Compare this APInt with the given uint64_t value
+ /// for the validity of the inequality relationship.
+ /// @brief Inequality operator.
+ inline bool operator!=(uint64_t Val) const {
+ return !((*this) == Val);
+ }
+
+ /// @brief Equality comparison
+ bool eq(const APInt &RHS) const {
+ return (*this) == RHS;
+ }
- /// Compare this APInt with the given APInt& RHS for
- /// the validity of the less-than relationship.
- /// @brief Less-than operator.
- bool operator <(const APInt& RHS) const;
+ /// @brief Inequality comparison
+ bool ne(const APInt &RHS) const {
+ return !((*this) == RHS);
+ }
- /// Compare this APInt with the given APInt& RHS for the validity
- /// of the less-than-or-equal relationship.
- /// @brief Less-than-or-equal operator.
- bool operator<=(const APInt& RHS) const;
+ /// @brief Unsigned less than comparison
+ bool ult(const APInt& RHS) const;
- /// Compare this APInt with the given APInt& RHS for the validity
- /// of the greater-than relationship.
- /// @brief Greater-than operator.
- bool operator> (const APInt& RHS) const;
+ /// @brief Signed less than comparison
+ bool slt(const APInt& RHS) const;
- /// @brief Greater-than-or-equal operator.
- /// Compare this APInt with the given APInt& RHS for the validity
- /// of the greater-than-or-equal relationship.
- bool operator>=(const APInt& RHS) const;
+ /// @brief Unsigned less or equal comparison
+ bool ule(const APInt& RHS) const {
+ return ult(RHS) || eq(RHS);
+ }
- /// @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() {
- if (isSingleWord())
- return isSigned ? ((int64_t(VAL) << (APINT_BITS_PER_WORD - bitsnum)) >>
- (APINT_BITS_PER_WORD - bitsnum)) :
- VAL;
- else
- return pVal[0];
+ /// @brief Signed less or equal comparison
+ bool sle(const APInt& RHS) const {
+ return slt(RHS) || eq(RHS);
}
- /// @returns the largest value for an APInt of the specified bit-width and
- /// if isSign == true, it should be largest signed value, otherwise largest
- /// unsigned value.
- /// @brief Gets max value of the APInt with bitwidth <= 64.
- static APInt getMaxValue(unsigned numBits, bool isSign);
+ /// @brief Unsigned greather than comparison
+ bool ugt(const APInt& RHS) const {
+ return !ult(RHS) && !eq(RHS);
+ }
- /// @returns the smallest value for an APInt of the given bit-width and
- /// if isSign == true, it should be smallest signed value, otherwise zero.
- /// @brief Gets min value of the APInt with bitwidth <= 64.
- static APInt getMinValue(unsigned numBits, bool isSign);
+ /// @brief Signed greather than comparison
+ bool sgt(const APInt& RHS) const {
+ return !slt(RHS) && !eq(RHS);
+ }
- /// @returns the all-ones value for an APInt of the specified bit-width.
- /// @brief Get the all-ones value.
- static APInt getAllOnesValue(unsigned numBits);
+ /// @brief Unsigned greater or equal comparison
+ bool uge(const APInt& RHS) const {
+ return !ult(RHS);
+ }
+
+ /// @brief Signed greather or equal comparison
+ bool sge(const APInt& RHS) const {
+ return !slt(RHS);
+ }
+
+ /// Arithmetic right-shift this APInt by shiftAmt.
+ /// @brief Arithmetic right-shift function.
+ APInt ashr(uint32_t shiftAmt) const;
+
+ /// Logical right-shift this APInt by shiftAmt.
+ /// @brief Logical right-shift function.
+ APInt lshr(uint32_t shiftAmt) const;
+
+ /// Left-shift this APInt by shiftAmt.
+ /// @brief Left-shift function.
+ APInt shl(uint32_t shiftAmt) const;
+
+ /// Signed divide this APInt by APInt RHS.
+ /// @brief Signed division function for APInt.
+ inline APInt sdiv(const APInt& RHS) const {
+ bool isNegativeLHS = (*this)[BitWidth - 1];
+ bool isNegativeRHS = RHS[RHS.BitWidth - 1];
+ APInt Result = APIntOps::udiv(
+ isNegativeLHS ? -(*this) : (*this), isNegativeRHS ? -RHS : RHS);
+ return isNegativeLHS != isNegativeRHS ? -Result : Result;
+ }
+
+ /// Unsigned divide this APInt by APInt RHS.
+ /// @brief Unsigned division function for APInt.
+ APInt udiv(const APInt& RHS) const;
+
+ /// Signed remainder operation on APInt.
+ /// @brief Function for signed remainder operation.
+ inline APInt srem(const APInt& RHS) const {
+ bool isNegativeLHS = (*this)[BitWidth - 1];
+ bool isNegativeRHS = RHS[RHS.BitWidth - 1];
+ APInt Result = APIntOps::urem(
+ isNegativeLHS ? -(*this) : (*this), isNegativeRHS ? -RHS : RHS);
+ return isNegativeLHS ? -Result : Result;
+ }
+
+ /// Unsigned remainder operation on APInt.
+ /// @brief Function for unsigned remainder operation.
+ APInt urem(const APInt& RHS) const;
+
+ /// Truncate the APInt to a specified width. It is an error to specify a width
+ /// that is greater than or equal to the current width.
+ /// @brief Truncate to new width.
+ void trunc(uint32_t width);
+
+ /// This operation sign extends the APInt to a new width. If the high order
+ /// bit is set, the fill on the left will be done with 1 bits, otherwise zero.
+ /// It is an error to specify a width that is less than or equal to the
+ /// current width.
+ /// @brief Sign extend to a new width.
+ void sext(uint32_t width);
+
+ /// This operation zero extends the APInt to a new width. Thie high order bits
+ /// are filled with 0 bits. It is an error to specify a width that is less
+ /// than or equal to the current width.
+ /// @brief Zero extend to a new width.
+ void zext(uint32_t width);
/// @brief Set every bit to 1.
APInt& set();
/// Set the given bit to 1 whose position is given as "bitPosition".
/// @brief Set a given bit to 1.
- APInt& set(unsigned bitPosition);
-
- /// @returns the '0' value for an APInt of the specified bit-width.
- /// @brief Get the '0' value.
- static APInt getNullValue(unsigned numBits);
+ APInt& set(uint32_t bitPosition);
/// @brief Set every bit to 0.
APInt& clear();
/// Set the given bit to 0 whose position is given as "bitPosition".
/// @brief Set a given bit to 0.
- APInt& clear(unsigned bitPosition);
+ APInt& clear(uint32_t bitPosition);
/// @brief Toggle every bit to its opposite value.
APInt& flip();
/// Toggle a given bit to its opposite value whose position is given
/// as "bitPosition".
/// @brief Toggles a given bit to its opposite value.
- APInt& flip(unsigned bitPosition);
+ APInt& flip(uint32_t bitPosition);
+
+ /// This function returns the number of active bits which is defined as the
+ /// bit width minus the number of leading zeros. This is used in several
+ /// computations to see how "wide" the value is.
+ /// @brief Compute the number of active bits in the value
+ inline uint32_t getActiveBits() const {
+ 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 {
+ if (isSingleWord())
+ 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");
+ }
+
+ /// @returns the largest value for an APInt of the specified bit-width and
+ /// if isSign == true, it should be largest signed value, otherwise largest
+ /// unsigned value.
+ /// @brief Gets max value of the APInt with bitwidth <= 64.
+ static APInt getMaxValue(uint32_t numBits, bool isSign);
+
+ /// @returns the smallest value for an APInt of the given bit-width and
+ /// if isSign == true, it should be smallest signed value, otherwise zero.
+ /// @brief Gets min value of the APInt with bitwidth <= 64.
+ static APInt getMinValue(uint32_t numBits, bool isSign);
+
+ /// @returns the all-ones value for an APInt of the specified bit-width.
+ /// @brief Get the all-ones value.
+ static APInt getAllOnesValue(uint32_t numBits);
+
+ /// @returns the '0' value for an APInt of the specified bit-width.
+ /// @brief Get the '0' value.
+ static APInt getNullValue(uint32_t numBits);
+
+ /// This converts the APInt to a boolean valy as a test against zero.
+ /// @brief Boolean conversion function.
+ inline bool getBoolValue() const {
+ return countLeadingZeros() != BitWidth;
+ }
/// @returns a character interpretation of the APInt.
- std::string to_string(uint8_t radix = 10) const;
+ std::string toString(uint8_t radix = 10, bool wantSigned = true) const;
- /// Get an APInt with the same bitsnum as this APInt, just zero mask
+ /// Get an APInt with the same BitWidth as this APInt, just zero mask
/// the low bits and right shift to the least significant bit.
/// @returns the high "numBits" bits of this APInt.
- APInt HiBits(unsigned numBits) const;
+ APInt getHiBits(uint32_t numBits) const;
- /// Get an APInt with the same bitsnum as this APInt, just zero mask
+ /// Get an APInt with the same BitWidth as this APInt, just zero mask
/// the high bits.
/// @returns the low "numBits" bits of this APInt.
- APInt LoBits(unsigned numBits) const;
+ APInt getLoBits(uint32_t numBits) const;
/// @returns true if the argument APInt value is a power of two > 0.
- inline const bool isPowerOf2() const {
- return (!!*this) && !(*this & (*this - 1));
- }
+ bool isPowerOf2() const;
/// @returns the number of zeros from the most significant bit to the first
/// one bits.
- unsigned CountLeadingZeros() const;
+ uint32_t countLeadingZeros() const;
/// @returns the number of zeros from the least significant bit to the first
/// one bit.
- unsigned CountTrailingZeros() const;
+ uint32_t countTrailingZeros() const;
/// @returns the number of set bits.
- unsigned CountPopulation() const;
+ uint32_t countPopulation() const;
/// @returns the total number of bits.
- inline unsigned getNumBits() const
- { return bitsnum; }
+ inline uint32_t getBitWidth() const {
+ return BitWidth;
+ }
+
+ /// @brief Check if this APInt has a N-bits integer value.
+ inline bool isIntN(uint32_t N) const {
+ assert(N && "N == 0 ???");
+ if (isSingleWord()) {
+ return VAL == (VAL & (~0ULL >> (64 - N)));
+ } else {
+ APInt Tmp(N, getNumWords(), pVal);
+ return Tmp == (*this);
+ }
+ }
+
+ /// @returns a byte-swapped representation of this APInt Value.
+ APInt byteSwap() const;
+
+ /// @returns the floor log base 2 of this APInt.
+ inline uint32_t logBase2() const {
+ return getNumWords() * APINT_BITS_PER_WORD - 1 - countLeadingZeros();
+ }
+
+ /// @brief Converts this APInt to a double value.
+ double roundToDouble(bool isSigned = false) const;
};
+namespace APIntOps {
+
/// @brief Check if the specified APInt has a N-bits integer value.
-inline bool isIntN(unsigned N, const APInt& APIVal) {
- if (APIVal.isSingleWord()) {
- APInt Tmp(N, APIVal.VAL);
- return Tmp == APIVal;
- } else {
- APInt Tmp(N, APIVal.pVal);
- return Tmp == APIVal;
- }
+inline bool isIntN(uint32_t N, const APInt& APIVal) {
+ return APIVal.isIntN(N);
}
/// @returns true if the argument APInt value is a sequence of ones
/// starting at the least significant bit with the remainder zero.
-inline const bool isMask(unsigned numBits, const APInt& APIVal) {
- return APIVal && ((APIVal + 1) & APIVal) == 0;
+inline const bool isMask(uint32_t numBits, const APInt& APIVal) {
+ return APIVal.getBoolValue() && ((APIVal + APInt(numBits,1)) & APIVal) == 0;
}
/// @returns true if the argument APInt value contains a sequence of ones
/// with the remainder zero.
-inline const bool isShiftedMask(unsigned numBits, const APInt& APIVal) {
- return isMask(numBits, (APIVal - 1) | APIVal);
+inline const bool isShiftedMask(uint32_t numBits, const APInt& APIVal) {
+ return isMask(numBits, (APIVal - APInt(numBits,1)) | APIVal);
}
/// @returns a byte-swapped representation of the specified APInt Value.
-APInt ByteSwap(const APInt& APIVal);
+inline APInt byteSwap(const APInt& APIVal) {
+ return APIVal.byteSwap();
+}
/// @returns the floor log base 2 of the specified APInt value.
-inline APInt LogBase2(const APInt& APIVal) {
- return APIVal.numWords() * APInt::APINT_BITS_PER_WORD -
- APIVal.CountLeadingZeros();
+inline uint32_t logBase2(const APInt& APIVal) {
+ return APIVal.logBase2();
}
/// @returns the greatest common divisor of the two values
/// using Euclid's algorithm.
APInt GreatestCommonDivisor(const APInt& API1, const APInt& API2);
+/// @brief Converts the given APInt to a double value.
+inline double RoundAPIntToDouble(const APInt& APIVal, bool isSigned = false) {
+ return APIVal.roundToDouble(isSigned);
+}
+
+/// @brief Converts the given APInt to a float vlalue.
+inline float RoundAPIntToFloat(const APInt& APIVal) {
+ return float(RoundAPIntToDouble(APIVal));
+}
+
+/// @brief Converts the given double value into a APInt.
+APInt RoundDoubleToAPInt(double Double);
+
+/// @brief Converts the given float value into a APInt.
+inline APInt RoundFloatToAPInt(float Float) {
+ return RoundDoubleToAPInt(double(Float));
+}
+
+/// Arithmetic right-shift the APInt by shiftAmt.
+/// @brief Arithmetic right-shift function.
+inline APInt ashr(const APInt& LHS, uint32_t shiftAmt) {
+ return LHS.ashr(shiftAmt);
+}
+
+/// Logical right-shift the APInt by shiftAmt.
+/// @brief Logical right-shift function.
+inline APInt lshr(const APInt& LHS, uint32_t shiftAmt) {
+ return LHS.lshr(shiftAmt);
+}
+
+/// Left-shift the APInt by shiftAmt.
+/// @brief Left-shift function.
+inline APInt shl(const APInt& LHS, uint32_t shiftAmt) {
+ return LHS.shl(shiftAmt);
+}
+
+/// Signed divide APInt LHS by APInt RHS.
+/// @brief Signed division function for APInt.
+inline APInt sdiv(const APInt& LHS, const APInt& RHS) {
+ return LHS.sdiv(RHS);
+}
+
+/// Unsigned divide APInt LHS by APInt RHS.
+/// @brief Unsigned division function for APInt.
+inline APInt udiv(const APInt& LHS, const APInt& RHS) {
+ return LHS.udiv(RHS);
+}
+
+/// Signed remainder operation on APInt.
+/// @brief Function for signed remainder operation.
+inline APInt srem(const APInt& LHS, const APInt& RHS) {
+ return LHS.srem(RHS);
+}
+
+/// Unsigned remainder operation on APInt.
+/// @brief Function for unsigned remainder operation.
+inline APInt urem(const APInt& LHS, const APInt& RHS) {
+ return LHS.urem(RHS);
+}
+
+/// Performs multiplication on APInt values.
+/// @brief Function for multiplication operation.
+inline APInt mul(const APInt& LHS, const APInt& RHS) {
+ return LHS * RHS;
+}
+
+/// Performs addition on APInt values.
+/// @brief Function for addition operation.
+inline APInt add(const APInt& LHS, const APInt& RHS) {
+ return LHS + RHS;
+}
+
+/// Performs subtraction on APInt values.
+/// @brief Function for subtraction operation.
+inline APInt sub(const APInt& LHS, const APInt& RHS) {
+ return LHS - RHS;
+}
+
+/// Performs bitwise AND operation on APInt LHS and
+/// APInt RHS.
+/// @brief Bitwise AND function for APInt.
+inline APInt And(const APInt& LHS, const APInt& RHS) {
+ return LHS & RHS;
+}
+
+/// Performs bitwise OR operation on APInt LHS and APInt RHS.
+/// @brief Bitwise OR function for APInt.
+inline APInt Or(const APInt& LHS, const APInt& RHS) {
+ return LHS | RHS;
+}
+
+/// Performs bitwise XOR operation on APInt.
+/// @brief Bitwise XOR function for APInt.
+inline APInt Xor(const APInt& LHS, const APInt& RHS) {
+ return LHS ^ RHS;
+}
+
+/// Performs a bitwise complement operation on APInt.
+/// @brief Bitwise complement function.
+inline APInt Not(const APInt& APIVal) {
+ return ~APIVal;
+}
+
+} // End of APIntOps namespace
+
} // End of llvm namespace
#endif
projects / oota-llvm.git / blobdiff