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Implement inline methods that make transition of ConstantInt to use APInt

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easier to comprehend and might be useful elsewhere.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34635 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Reid Spencer 2007-02-26 17:50:32 +00:00
parent 9d1ae8fabe
commit f99705e898
1 changed files with 38 additions and 2 deletions
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40
include/llvm/ADT/APInt.h
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@ -463,12 +463,12 @@ public:
/// 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);
static APInt getMaxValue(uint32_t numBits, bool isSigned);
/// @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);
static APInt getMinValue(uint32_t numBits, bool isSigned);
/// @returns the all-ones value for an APInt of the specified bit-width.
/// @brief Get the all-ones value.
@ -484,6 +484,42 @@ public:
return countLeadingZeros() != BitWidth;
}
/// This checks to see if the value has all bits of the APInt are set or not.
/// @brief Determine if all bits are set
inline bool isAllOnesValue() const {
return countPopulation() == BitWidth;
}
/// This checks to see if the value of this APInt is the maximum unsigned
/// value for the APInt's bit width.
/// @brief Determine if this is the largest unsigned value.
bool isMaxValue() const {
return countPopulation() == BitWidth;
}
/// This checks to see if the value of this APInt is the maximum signed
/// value for the APInt's bit width.
/// @brief Determine if this is the largest signed value.
bool isMaxSignedValue() const {
return BitWidth == 1 ? VAL == 0 :
!isNegative() && countPopulation() == BitWidth - 1;
}
/// This checks to see if the value of this APInt is the minimum signed
/// value for the APInt's bit width.
/// @brief Determine if this is the smallest unsigned value.
bool isMinValue() const {
return countPopulation() == 0;
}
/// This checks to see if the value of this APInt is the minimum signed
/// value for the APInt's bit width.
/// @brief Determine if this is the smallest signed value.
bool isMinSignedValue() const {
return BitWidth == 1 ? VAL == 1 :
isNegative() && countPopulation() == 1;
}
/// @returns a character interpretation of the APInt.
std::string toString(uint8_t radix = 10, bool wantSigned = true) const;