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As Chris suggested, fixed some problems. (This is the first part.)

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33986 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Zhou Sheng 2007-02-07 05:58:38 +00:00
parent 421d3daa05
commit f29a09d627
1 changed files with 47 additions and 21 deletions
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68
include/llvm/ADT/APInt.h
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@ -45,7 +45,7 @@ class APInt {
friend double APIntToDouble(const APInt& APIVal);
friend float APIntToFloat(const APInt& APIVal);
unsigned bitsnum; ///< The number of bits.
unsigned BitsNum; ///< The number of bits.
bool isSigned; ///< The sign flag for this APInt.
/// This union is used to store the integer value. When the
@ -64,22 +64,22 @@ class APInt {
/// 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 unsigned getNumWords() const {
return (BitsNum + 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; }
{ return BitsNum <= 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 unsigned whichByte(unsigned bitPosition)
{ return (bitPosition % APINT_BITS_PER_WORD) / 8; }
/// @returns the bit position in a word for the specified bit position
/// in APInt.
@ -93,10 +93,10 @@ class APInt {
inline void TruncToBits() {
if (isSingleWord())
VAL &= ~uint64_t(0ULL) >> (APINT_BITS_PER_WORD - bitsnum);
VAL &= ~uint64_t(0ULL) >> (APINT_BITS_PER_WORD - BitsNum);
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(BitsNum - 1) + 1));
}
/// @returns the corresponding word for the specified bit position.
@ -108,6 +108,9 @@ class APInt {
inline uint64_t getWord(unsigned bitPosition) const
{ return isSingleWord() ? VAL : pVal[whichWord(bitPosition)]; }
/// @brief Converts a char array into an integer.
void StrToAPInt(const char *StrStart, unsigned slen, uint8_t radix);
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,
@ -119,7 +122,11 @@ public:
/// @brief Create a new APInt by translating the string represented
/// integer value.
APInt(std::string& Val, uint8_t radix = 10, bool sign = false);
APInt(const std::string& Val, uint8_t radix = 10, bool sign = false);
/// @brief Create a new APInt by translating the char array represented
/// integer value.
APInt(const char StrStart[], unsigned slen, uint8_t radix, bool sign = false);
/// @brief Copy Constructor.
APInt(const APInt& API);
@ -136,7 +143,10 @@ public:
/// Increments the APInt by one.
/// @brief Postfix increment operator.
const APInt operator++(int);
inline const APInt operator++(int) {
APInt API(*this);
return ++API;
}
/// Increments the APInt by one.
/// @brief Prefix increment operator.
@ -144,7 +154,10 @@ public:
/// Decrements the APInt by one.
/// @brief Postfix decrement operator.
const APInt operator--(int);
inline const APInt operator--(int) {
APInt API(*this);
return --API;
}
/// Decrements the APInt by one.
/// @brief Prefix decrement operator.
@ -264,11 +277,25 @@ public:
/// @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);
}
/// Compare this APInt with the given APInt& RHS for
/// the validity of the less-than relationship.
/// @brief Less-than operator.
@ -293,11 +320,10 @@ public:
/// 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)) :
return isSigned ? ((int64_t(VAL) << (APINT_BITS_PER_WORD - BitsNum)) >>
(APINT_BITS_PER_WORD - BitsNum)) :
VAL;
else
return pVal[0];
assert(0 && "This APInt's bitwidth > 64");
}
/// @returns the largest value for an APInt of the specified bit-width and
@ -344,12 +370,12 @@ public:
/// @returns a character interpretation of the APInt.
std::string to_string(uint8_t radix = 10) const;
/// Get an APInt with the same bitsnum as this APInt, just zero mask
/// Get an APInt with the same BitsNum 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;
/// Get an APInt with the same bitsnum as this APInt, just zero mask
/// Get an APInt with the same BitsNum as this APInt, just zero mask
/// the high bits.
/// @returns the low "numBits" bits of this APInt.
APInt LoBits(unsigned numBits) const;
@ -372,7 +398,7 @@ public:
/// @returns the total number of bits.
inline unsigned getNumBits() const
{ return bitsnum; }
{ return BitsNum; }
};
@ -404,7 +430,7 @@ APInt ByteSwap(const APInt& APIVal);
/// @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 -
return APIVal.getNumWords() * APInt::APINT_BITS_PER_WORD -
APIVal.CountLeadingZeros();
}