LLVM API Documentation
Class for arbitrary precision integers. More...
#include <APInt.h>
Classes | |
| struct | ms |
| Magic data for optimising signed division by a constant. More... | |
| struct | mu |
| Magic data for optimising unsigned division by a constant. More... | |
Public Member Functions | |
Constructors | |
| APInt (unsigned numBits, uint64_t val, bool isSigned=false) | |
| Create a new APInt of numBits width, initialized as val. More... | |
| APInt (unsigned numBits, ArrayRef< uint64_t > bigVal) | |
| Construct an APInt of numBits width, initialized as bigVal[]. More... | |
| APInt (unsigned numBits, unsigned numWords, const uint64_t bigVal[]) | |
| APInt (unsigned numBits, StringRef str, uint8_t radix) | |
| Construct an APInt from a string representation. More... | |
| APInt (const APInt &that) | |
| Copy Constructor. More... | |
| ~APInt () | |
| Destructor. More... | |
| APInt () | |
| Default constructor that creates an uninitialized APInt. More... | |
| bool | needsCleanup () const |
| Returns whether this instance allocated memory. More... | |
| void | Profile (FoldingSetNodeID &id) const |
| Profile - This method 'profiles' an APInt for use with FoldingSet. More... | |
Value Tests | |
| bool | isNegative () const |
| Determine sign of this APInt. More... | |
| bool | isNonNegative () const |
| Determine if this APInt Value is non-negative (>= 0) More... | |
| bool | isStrictlyPositive () const |
| Determine if this APInt Value is positive. More... | |
| bool | isAllOnesValue () const |
| Determine if all bits are set. More... | |
| bool | isMaxValue () const |
| Determine if this is the largest unsigned value. More... | |
| bool | isMaxSignedValue () const |
| Determine if this is the largest signed value. More... | |
| bool | isMinValue () const |
| Determine if this is the smallest unsigned value. More... | |
| bool | isMinSignedValue () const |
| Determine if this is the smallest signed value. More... | |
| bool | isIntN (unsigned N) const |
| Check if this APInt has an N-bits unsigned integer value. More... | |
| bool | isSignedIntN (unsigned N) const |
| Check if this APInt has an N-bits signed integer value. More... | |
| bool | isPowerOf2 () const |
| Check if this APInt's value is a power of two greater than zero. More... | |
| bool | isSignBit () const |
| Check if the APInt's value is returned by getSignBit. More... | |
| bool | getBoolValue () const |
| Convert APInt to a boolean value. More... | |
| uint64_t | getLimitedValue (uint64_t Limit=~0ULL) const |
Unary Operators | |
| const APInt | operator++ (int) |
| Postfix increment operator. More... | |
| APInt & | operator++ () |
| Prefix increment operator. More... | |
| const APInt | operator-- (int) |
| Postfix decrement operator. More... | |
| APInt & | operator-- () |
| Prefix decrement operator. More... | |
| APInt | operator~ () const |
| Unary bitwise complement operator. More... | |
| APInt | operator- () const |
| Unary negation operator. More... | |
| bool | operator! () const |
| Logical negation operator. More... | |
Assignment Operators | |
| APInt & | operator= (const APInt &RHS) |
| Copy assignment operator. More... | |
| APInt & | operator= (uint64_t RHS) |
| Assignment operator. More... | |
| APInt & | operator&= (const APInt &RHS) |
| Bitwise AND assignment operator. More... | |
| APInt & | operator|= (const APInt &RHS) |
| Bitwise OR assignment operator. More... | |
| APInt & | operator|= (uint64_t RHS) |
| Bitwise OR assignment operator. More... | |
| APInt & | operator^= (const APInt &RHS) |
| Bitwise XOR assignment operator. More... | |
| APInt & | operator*= (const APInt &RHS) |
| Multiplication assignment operator. More... | |
| APInt & | operator+= (const APInt &RHS) |
| Addition assignment operator. More... | |
| APInt & | operator-= (const APInt &RHS) |
| Subtraction assignment operator. More... | |
| APInt & | operator<<= (unsigned shiftAmt) |
| Left-shift assignment function. More... | |
Comparison Operators | |
| bool | operator== (const APInt &RHS) const |
| Equality operator. More... | |
| bool | operator== (uint64_t Val) const |
| Equality operator. More... | |
| bool | eq (const APInt &RHS) const |
| Equality comparison. More... | |
| bool | operator!= (const APInt &RHS) const |
| Inequality operator. More... | |
| bool | operator!= (uint64_t Val) const |
| Inequality operator. More... | |
| bool | ne (const APInt &RHS) const |
| Inequality comparison. More... | |
| bool | ult (const APInt &RHS) const |
| Unsigned less than comparison. More... | |
| bool | ult (uint64_t RHS) const |
| Unsigned less than comparison. More... | |
| bool | slt (const APInt &RHS) const |
| Signed less than comparison. More... | |
| bool | slt (uint64_t RHS) const |
| Signed less than comparison. More... | |
| bool | ule (const APInt &RHS) const |
| Unsigned less or equal comparison. More... | |
| bool | ule (uint64_t RHS) const |
| Unsigned less or equal comparison. More... | |
| bool | sle (const APInt &RHS) const |
| Signed less or equal comparison. More... | |
| bool | sle (uint64_t RHS) const |
| Signed less or equal comparison. More... | |
| bool | ugt (const APInt &RHS) const |
| Unsigned greather than comparison. More... | |
| bool | ugt (uint64_t RHS) const |
| Unsigned greater than comparison. More... | |
| bool | sgt (const APInt &RHS) const |
| Signed greather than comparison. More... | |
| bool | sgt (uint64_t RHS) const |
| Signed greater than comparison. More... | |
| bool | uge (const APInt &RHS) const |
| Unsigned greater or equal comparison. More... | |
| bool | uge (uint64_t RHS) const |
| Unsigned greater or equal comparison. More... | |
| bool | sge (const APInt &RHS) const |
| Signed greather or equal comparison. More... | |
| bool | sge (uint64_t RHS) const |
| Signed greater or equal comparison. More... | |
| bool | intersects (const APInt &RHS) const |
Resizing Operators | |
| APInt LLVM_ATTRIBUTE_UNUSED_RESULT | trunc (unsigned width) const |
| Truncate to new width. More... | |
| APInt LLVM_ATTRIBUTE_UNUSED_RESULT | sext (unsigned width) const |
| Sign extend to a new width. More... | |
| APInt LLVM_ATTRIBUTE_UNUSED_RESULT | zext (unsigned width) const |
| Zero extend to a new width. More... | |
| APInt LLVM_ATTRIBUTE_UNUSED_RESULT | sextOrTrunc (unsigned width) const |
| Sign extend or truncate to width. More... | |
| APInt LLVM_ATTRIBUTE_UNUSED_RESULT | zextOrTrunc (unsigned width) const |
| Zero extend or truncate to width. More... | |
| APInt LLVM_ATTRIBUTE_UNUSED_RESULT | sextOrSelf (unsigned width) const |
| Sign extend or truncate to width. More... | |
| APInt LLVM_ATTRIBUTE_UNUSED_RESULT | zextOrSelf (unsigned width) const |
| Zero extend or truncate to width. More... | |
Bit Manipulation Operators | |
| void | setAllBits () |
| Set every bit to 1. More... | |
| void | setBit (unsigned bitPosition) |
| Set a given bit to 1. More... | |
| void | clearAllBits () |
| Set every bit to 0. More... | |
| void | clearBit (unsigned bitPosition) |
| Set a given bit to 0. More... | |
| void | flipAllBits () |
| Toggle every bit to its opposite value. More... | |
| void | flipBit (unsigned bitPosition) |
| Toggles a given bit to its opposite value. More... | |
Mathematics Operations | |
| unsigned | logBase2 () const |
| unsigned | ceilLogBase2 () const |
| int32_t | exactLogBase2 () const |
| APInt LLVM_ATTRIBUTE_UNUSED_RESULT | sqrt () const |
| Compute the square root. More... | |
| APInt LLVM_ATTRIBUTE_UNUSED_RESULT | abs () const |
| Get the absolute value;. More... | |
| APInt | multiplicativeInverse (const APInt &modulo) const |
Support for division by constant | |
| ms | magic () const |
| mu | magicu (unsigned LeadingZeros=0) const |
Value Generators | |
| APInt | getHiBits (unsigned numBits) const |
| Compute an APInt containing numBits highbits from this APInt. More... | |
| APInt | getLoBits (unsigned numBits) const |
| Compute an APInt containing numBits lowbits from this APInt. More... | |
| const uint64_t * | getRawData () const |
| static APInt | getMaxValue (unsigned numBits) |
| Gets maximum unsigned value of APInt for specific bit width. More... | |
| static APInt | getSignedMaxValue (unsigned numBits) |
| Gets maximum signed value of APInt for a specific bit width. More... | |
| static APInt | getMinValue (unsigned numBits) |
| Gets minimum unsigned value of APInt for a specific bit width. More... | |
| static APInt | getSignedMinValue (unsigned numBits) |
| Gets minimum signed value of APInt for a specific bit width. More... | |
| static APInt | getSignBit (unsigned BitWidth) |
| Get the SignBit for a specific bit width. More... | |
| static APInt | getAllOnesValue (unsigned numBits) |
| Get the all-ones value. More... | |
| static APInt | getNullValue (unsigned numBits) |
| Get the '0' value. More... | |
| static APInt | getOneBitSet (unsigned numBits, unsigned BitNo) |
| Return an APInt with exactly one bit set in the result. More... | |
| static APInt | getBitsSet (unsigned numBits, unsigned loBit, unsigned hiBit) |
| Get a value with a block of bits set. More... | |
| static APInt | getHighBitsSet (unsigned numBits, unsigned hiBitsSet) |
| Get a value with high bits set. More... | |
| static APInt | getLowBitsSet (unsigned numBits, unsigned loBitsSet) |
| Get a value with low bits set. More... | |
| static APInt | getSplat (unsigned NewLen, const APInt &V) |
| Return a value containing V broadcasted over NewLen bits. More... | |
| static bool | isSameValue (const APInt &I1, const APInt &I2) |
| Determine if two APInts have the same value, after zero-extending one of them (if needed!) to ensure that the bit-widths match. More... | |
| hash_code | hash_value (const APInt &Arg) |
| Overload to compute a hash_code for an APInt value. More... | |
Binary Operators | |
| APInt | operator& (const APInt &RHS) const |
| Bitwise AND operator. More... | |
| APInt LLVM_ATTRIBUTE_UNUSED_RESULT | And (const APInt &RHS) const |
| APInt | operator| (const APInt &RHS) const |
| Bitwise OR operator. More... | |
| APInt LLVM_ATTRIBUTE_UNUSED_RESULT | Or (const APInt &RHS) const |
| Bitwise OR function. More... | |
| APInt | operator^ (const APInt &RHS) const |
| Bitwise XOR operator. More... | |
| APInt LLVM_ATTRIBUTE_UNUSED_RESULT | Xor (const APInt &RHS) const |
| Bitwise XOR function. More... | |
| APInt | operator* (const APInt &RHS) const |
| Multiplication operator. More... | |
| APInt | operator+ (const APInt &RHS) const |
| Addition operator. More... | |
| APInt | operator+ (uint64_t RHS) const |
| APInt | operator- (const APInt &RHS) const |
| Subtraction operator. More... | |
| APInt | operator- (uint64_t RHS) const |
| APInt | operator<< (unsigned Bits) const |
| Left logical shift operator. More... | |
| APInt | operator<< (const APInt &Bits) const |
| Left logical shift operator. More... | |
| APInt LLVM_ATTRIBUTE_UNUSED_RESULT | ashr (unsigned shiftAmt) const |
| Arithmetic right-shift function. More... | |
| APInt LLVM_ATTRIBUTE_UNUSED_RESULT | lshr (unsigned shiftAmt) const |
| Logical right-shift function. More... | |
| APInt LLVM_ATTRIBUTE_UNUSED_RESULT | shl (unsigned shiftAmt) const |
| Left-shift function. More... | |
| APInt LLVM_ATTRIBUTE_UNUSED_RESULT | rotl (unsigned rotateAmt) const |
| Rotate left by rotateAmt. More... | |
| APInt LLVM_ATTRIBUTE_UNUSED_RESULT | rotr (unsigned rotateAmt) const |
| Rotate right by rotateAmt. More... | |
| APInt LLVM_ATTRIBUTE_UNUSED_RESULT | ashr (const APInt &shiftAmt) const |
| Arithmetic right-shift function. More... | |
| APInt LLVM_ATTRIBUTE_UNUSED_RESULT | lshr (const APInt &shiftAmt) const |
| Logical right-shift function. More... | |
| APInt LLVM_ATTRIBUTE_UNUSED_RESULT | shl (const APInt &shiftAmt) const |
| Left-shift function. More... | |
| APInt LLVM_ATTRIBUTE_UNUSED_RESULT | rotl (const APInt &rotateAmt) const |
| Rotate left by rotateAmt. More... | |
| APInt LLVM_ATTRIBUTE_UNUSED_RESULT | rotr (const APInt &rotateAmt) const |
| Rotate right by rotateAmt. More... | |
| APInt LLVM_ATTRIBUTE_UNUSED_RESULT | udiv (const APInt &RHS) const |
| Unsigned division operation. More... | |
| APInt LLVM_ATTRIBUTE_UNUSED_RESULT | sdiv (const APInt &RHS) const |
| Signed division function for APInt. More... | |
| APInt LLVM_ATTRIBUTE_UNUSED_RESULT | urem (const APInt &RHS) const |
| Unsigned remainder operation. More... | |
| APInt LLVM_ATTRIBUTE_UNUSED_RESULT | srem (const APInt &RHS) const |
| Function for signed remainder operation. More... | |
| APInt | sadd_ov (const APInt &RHS, bool &Overflow) const |
| APInt | uadd_ov (const APInt &RHS, bool &Overflow) const |
| APInt | ssub_ov (const APInt &RHS, bool &Overflow) const |
| APInt | usub_ov (const APInt &RHS, bool &Overflow) const |
| APInt | sdiv_ov (const APInt &RHS, bool &Overflow) const |
| APInt | smul_ov (const APInt &RHS, bool &Overflow) const |
| APInt | umul_ov (const APInt &RHS, bool &Overflow) const |
| APInt | sshl_ov (unsigned Amt, bool &Overflow) const |
| bool | operator[] (unsigned bitPosition) const |
| Array-indexing support. More... | |
| static void | udivrem (const APInt &LHS, const APInt &RHS, APInt &Quotient, APInt &Remainder) |
| Dual division/remainder interface. More... | |
| static void | sdivrem (const APInt &LHS, const APInt &RHS, APInt &Quotient, APInt &Remainder) |
Value Characterization Functions | |
| unsigned | getBitWidth () const |
| Return the number of bits in the APInt. More... | |
| unsigned | getNumWords () const |
| Get the number of words. More... | |
| unsigned | getActiveBits () const |
| Compute the number of active bits in the value. More... | |
| unsigned | getActiveWords () const |
| Compute the number of active words in the value of this APInt. More... | |
| unsigned | getMinSignedBits () const |
| Get the minimum bit size for this signed APInt. More... | |
| uint64_t | getZExtValue () const |
| Get zero extended value. More... | |
| int64_t | getSExtValue () const |
| Get sign extended value. More... | |
| unsigned | countLeadingZeros () const |
| The APInt version of the countLeadingZeros functions in MathExtras.h. More... | |
| unsigned | countLeadingOnes () const |
| Count the number of leading one bits. More... | |
| unsigned | getNumSignBits () const |
| unsigned | countTrailingZeros () const |
| Count the number of trailing zero bits. More... | |
| unsigned | countTrailingOnes () const |
| Count the number of trailing one bits. More... | |
| unsigned | countPopulation () const |
| Count the number of bits set. More... | |
| static unsigned | getNumWords (unsigned BitWidth) |
| Get the number of words. More... | |
| static unsigned | getBitsNeeded (StringRef str, uint8_t radix) |
| Get bits required for string value. More... | |
Conversion Functions | |
| void | print (raw_ostream &OS, bool isSigned) const |
| void | toString (SmallVectorImpl< char > &Str, unsigned Radix, bool Signed, bool formatAsCLiteral=false) const |
| void | toStringUnsigned (SmallVectorImpl< char > &Str, unsigned Radix=10) const |
| void | toStringSigned (SmallVectorImpl< char > &Str, unsigned Radix=10) const |
| std::string | toString (unsigned Radix, bool Signed) const |
| Return the APInt as a std::string. More... | |
| APInt LLVM_ATTRIBUTE_UNUSED_RESULT | byteSwap () const |
| double | roundToDouble (bool isSigned) const |
| Converts this APInt to a double value. More... | |
| double | roundToDouble () const |
| Converts this unsigned APInt to a double value. More... | |
| double | signedRoundToDouble () const |
| Converts this signed APInt to a double value. More... | |
| double | bitsToDouble () const |
| Converts APInt bits to a double. More... | |
| float | bitsToFloat () const |
| Converts APInt bits to a double. More... | |
| static APInt LLVM_ATTRIBUTE_UNUSED_RESULT | doubleToBits (double V) |
| Converts a double to APInt bits. More... | |
| static APInt LLVM_ATTRIBUTE_UNUSED_RESULT | floatToBits (float V) |
| Converts a float to APInt bits. More... | |
Building-block Operations for APInt and APFloat | |
| void | dump () const |
| debug method More... | |
| static void | tcSet (integerPart *, integerPart, unsigned int) |
| static void | tcAssign (integerPart *, const integerPart *, unsigned int) |
| Assign one bignum to another. More... | |
| static bool | tcIsZero (const integerPart *, unsigned int) |
| Returns true if a bignum is zero, false otherwise. More... | |
| static int | tcExtractBit (const integerPart *, unsigned int bit) |
| Extract the given bit of a bignum; returns 0 or 1. Zero-based. More... | |
| static void | tcExtract (integerPart *, unsigned int dstCount, const integerPart *, unsigned int srcBits, unsigned int srcLSB) |
| static void | tcSetBit (integerPart *, unsigned int bit) |
| Set the given bit of a bignum. Zero-based. More... | |
| static void | tcClearBit (integerPart *, unsigned int bit) |
| Clear the given bit of a bignum. Zero-based. More... | |
| static unsigned int | tcLSB (const integerPart *, unsigned int) |
| static unsigned int | tcMSB (const integerPart *parts, unsigned int n) |
| static void | tcNegate (integerPart *, unsigned int) |
| Negate a bignum in-place. More... | |
| static integerPart | tcAdd (integerPart *, const integerPart *, integerPart carry, unsigned) |
| DST += RHS + CARRY where CARRY is zero or one. Returns the carry flag. More... | |
| static integerPart | tcSubtract (integerPart *, const integerPart *, integerPart carry, unsigned) |
| DST -= RHS + CARRY where CARRY is zero or one. Returns the carry flag. More... | |
| static int | tcMultiplyPart (integerPart *dst, const integerPart *src, integerPart multiplier, integerPart carry, unsigned int srcParts, unsigned int dstParts, bool add) |
| static int | tcMultiply (integerPart *, const integerPart *, const integerPart *, unsigned) |
| static unsigned int | tcFullMultiply (integerPart *, const integerPart *, const integerPart *, unsigned, unsigned) |
| static int | tcDivide (integerPart *lhs, const integerPart *rhs, integerPart *remainder, integerPart *scratch, unsigned int parts) |
| static void | tcShiftLeft (integerPart *, unsigned int parts, unsigned int count) |
| static void | tcShiftRight (integerPart *, unsigned int parts, unsigned int count) |
| static void | tcAnd (integerPart *, const integerPart *, unsigned int) |
| The obvious AND, OR and XOR and complement operations. More... | |
| static void | tcOr (integerPart *, const integerPart *, unsigned int) |
| static void | tcXor (integerPart *, const integerPart *, unsigned int) |
| static void | tcComplement (integerPart *, unsigned int) |
| static int | tcCompare (const integerPart *, const integerPart *, unsigned int) |
| Comparison (unsigned) of two bignums. More... | |
| static integerPart | tcIncrement (integerPart *, unsigned int) |
| Increment a bignum in-place. Return the carry flag. More... | |
| static integerPart | tcDecrement (integerPart *, unsigned int) |
| Decrement a bignum in-place. Return the borrow flag. More... | |
| static void | tcSetLeastSignificantBits (integerPart *, unsigned int, unsigned int bits) |
| Set the least significant BITS and clear the rest. More... | |
Class for arbitrary precision integers.
APInt is a functional replacement for common case unsigned integer type like "unsigned", "unsigned long" or "uint64_t", but also allows non-byte-width 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 both the typical integer arithmetic and comparison operations as well as bitwise manipulation.
The class has several invariants worth noting:
Create a new APInt of numBits width, initialized as val.
If isSigned is true then val is treated as if it were a signed value (i.e. as an int64_t) and the appropriate sign extension to the bit width will be done. Otherwise, no sign extension occurs (high order bits beyond the range of val are zero filled).
| numBits | the bit width of the constructed APInt |
| val | the initial value of the APInt |
| isSigned | how to treat signedness of val |
Definition at line 236 of file APInt.h.
References VAL.
Construct an APInt of numBits width, initialized as bigVal[].
Note that bigVal.size() can be smaller or larger than the corresponding bit width but any extraneous bits will be dropped.
Equivalent to APInt(numBits, ArrayRef<uint64_t>(bigVal, numWords)), but deprecated because this constructor is prone to ambiguity with the APInt(unsigned, uint64_t, bool) constructor.
If this overload is ever deleted, care should be taken to prevent calls from being incorrectly captured by the APInt(unsigned, uint64_t, bool) constructor.
Definition at line 111 of file APInt.cpp.
References llvm::makeArrayRef().
Construct an APInt from a string representation.
This constructor interprets the string str in the given radix. The interpretation stops when the first character that is not suitable for the radix is encountered, or the end of the string. Acceptable radix values are 2, 8, 10, 16, and 36. It is an error for the value implied by the string to require more bits than numBits.
| numBits | the bit width of the constructed APInt |
| str | the string to be interpreted |
| radix | the radix to use for the conversion |
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Default constructor that creates an uninitialized APInt.
This is useful for object deserialization (pair this with the static method Read).
Definition at line 304 of file APInt.h.
Referenced by ashr(), byteSwap(), doubleToBits(), floatToBits(), getAllOnesValue(), getHighBitsSet(), getLowBitsSet(), getMinValue(), getNullValue(), lshr(), multiplicativeInverse(), operator&(), operator*(), operator+(), operator-(), llvm::APSInt::operator==(), operator^(), operator|(), sext(), sge(), sgt(), shl(), sle(), slt(), sqrt(), trunc(), udiv(), udivrem(), uge(), ugt(), ule(), ult(), urem(), and zext().
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Get the absolute value;.
If *this is < 0 then return -(*this), otherwise *this;
Definition at line 1521 of file APInt.h.
References isNegative().
Referenced by llvm::ComputeMaskedBits(), llvm::SelectionDAG::ComputeMaskedBits(), findGCD(), gcd(), magic(), SimplifyICmpInst(), llvm::InstCombiner::visitICmpInst(), and llvm::InstCombiner::visitMul().
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Definition at line 768 of file APInt.h.
References operator&().
Arithmetic right-shift function.
Arithmetic right-shift this APInt by shiftAmt.
Definition at line 1038 of file APInt.cpp.
References APInt(), getNumWords(), and isNegative().
Referenced by ashr(), llvm::APIntOps::ashr(), llvm::ConstantFoldBinaryInstruction(), llvm::SelectionDAG::FoldConstantArithmetic(), llvm::InstCombiner::FoldICmpShrCst(), llvm::SelectionDAG::getNode(), llvm::APSInt::operator>>(), SimplifyICmpInst(), and llvm::Interpreter::visitAShr().
Arithmetic right-shift function.
Arithmetic right-shift this APInt by shiftAmt.
Definition at line 1032 of file APInt.cpp.
References ashr(), and getLimitedValue().
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Converts APInt bits to a double.
The conversion does not do a translation from integer to double, it just re-interprets the bits as a double. Note that it is valid to do this on any bit width. Exactly 64 bits will be translated.
Definition at line 1446 of file APInt.h.
References I, pVal, T, and VAL.
Referenced by llvm::APFloat::convertToDouble(), and llvm::ExecutionEngine::getConstantValue().
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Converts APInt bits to a double.
The conversion does not do a translation from integer to float, it just re-interprets the bits as a float. Note that it is valid to do this on any bit width. Exactly 32 bits will be translated.
Definition at line 1460 of file APInt.h.
References F(), I, pVal, T, and VAL.
Referenced by llvm::APFloat::convertToFloat(), and llvm::ExecutionEngine::getConstantValue().
| APInt APInt::byteSwap | ( | ) | const |
Definition at line 777 of file APInt.cpp.
References APInt(), llvm::ByteSwap_16(), llvm::ByteSwap_32(), llvm::ByteSwap_64(), getNumWords(), I, lshrNear(), N, and pVal.
Referenced by llvm::APIntOps::byteSwap(), llvm::SelectionDAG::getNode(), and llvm::InstCombiner::visitICmpInstWithInstAndIntCst().
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Definition at line 1503 of file APInt.h.
References countLeadingZeros().
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Set every bit to 0.
Definition at line 1218 of file APInt.h.
References getNumWords(), llvm::Intrinsic::memset, pVal, and VAL.
Referenced by llvm::ComputeMaskedBits(), llvm::SelectionDAG::ComputeMaskedBits(), and operator*=().
| void APInt::clearBit | ( | unsigned | bitPosition | ) |
Set a given bit to 0.
Set the given bit to 0 whose position is given as "bitPosition".
Definition at line 592 of file APInt.cpp.
References pVal.
Referenced by ComputeSignedMinMaxValuesFromKnownBits(), flipBit(), and getSignedMaxValue().
| unsigned APInt::countLeadingOnes | ( | ) | const |
Count the number of leading one bits.
This function is an APInt version of the countLeadingOnes_{32,64} functions in MathExtras.h. It counts the number of ones from the most significant bit to the first zero bit.
Definition at line 709 of file APInt.cpp.
References llvm::CountLeadingOnes_64(), getNumWords(), and pVal.
Referenced by llvm::ComputeMaskedBits(), llvm::SelectionDAG::ComputeMaskedBits(), ComputeMaskedBitsMul(), getMinSignedBits(), getNumSignBits(), and sshl_ov().
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The APInt version of the countLeadingZeros functions in MathExtras.h.
It counts the number of zeros from the most significant bit to the first one bit.
Definition at line 1340 of file APInt.h.
References llvm::countLeadingZeros(), and VAL.
Referenced by areUsedBitsDense(), ceilLogBase2(), llvm::ComputeNumSignBits(), llvm::SelectionDAG::ComputeNumSignBits(), getActiveBits(), llvm::SelectionDAG::getNode(), getNumSignBits(), logBase2(), llvm::TargetLowering::TargetLoweringOpt::ShrinkDemandedOp(), sshl_ov(), llvm::InstCombiner::visitAnd(), and llvm::InstCombiner::visitCallInst().
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Count the number of bits set.
This function is an APInt version of the countPopulation_{32,64} functions in MathExtras.h. It counts the number of 1 bits in the APInt value.
Definition at line 1394 of file APInt.h.
References llvm::CountPopulation_64(), and VAL.
Referenced by llvm::SelectionDAG::getNode(), isMaxSignedValue(), and ValueHasExactlyOneBitSet().
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Count the number of trailing one bits.
This function is an APInt version of the countTrailingOnes_{32,64} functions in MathExtras.h. It counts the number of ones from the least significant bit to the first zero bit.
Definition at line 1382 of file APInt.h.
References llvm::CountTrailingOnes_64(), and VAL.
Referenced by llvm::SelectionDAG::ComputeMaskedBits(), ComputeMaskedBitsAddSub(), ComputeMaskedBitsMul(), DemandedBitsLHSMask(), and isWordAligned().
| unsigned APInt::countTrailingZeros | ( | ) | const |
Count the number of trailing zero bits.
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.
Definition at line 736 of file APInt.cpp.
References llvm::countTrailingZeros(), getNumWords(), and pVal.
Referenced by areUsedBitsDense(), BinomialCoefficient(), llvm::TargetLowering::BuildUDIV(), DemandedBitsLHSMask(), llvm::SelectionDAG::getNode(), LowerSDIV(), ProcessUGT_ADDCST_ADD(), llvm::TargetLowering::SimplifySetCC(), SolveLinEquationWithOverflow(), llvm::APFloat::toString(), llvm::InstCombiner::visitCallInst(), llvm::InstCombiner::visitICmpInst(), and llvm::InstCombiner::visitICmpInstWithInstAndIntCst().
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Converts a double to APInt bits.
The conversion does not do a translation from double to integer, it just re-interprets the bits of the double.
Definition at line 1473 of file APInt.h.
Referenced by llvm::APFloat::APFloat(), and llvm::ExecutionEngine::getConstantValue().
| void APInt::dump | ( | ) | const |
debug method
Definition at line 2253 of file APInt.cpp.
References llvm::dbgs(), llvm::SmallString< InternalLen >::str(), toStringSigned(), and toStringUnsigned().
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Definition at line 1509 of file APInt.h.
References isPowerOf2(), and logBase2().
Referenced by llvm::TargetLowering::SimplifyDemandedBits().
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Toggle every bit to its opposite value.
Definition at line 1231 of file APInt.h.
References getNumWords(), pVal, and VAL.
Referenced by operator~(), slt(), and toString().
| void APInt::flipBit | ( | unsigned | bitPosition | ) |
Toggles a given bit to its opposite value.
Toggle every bit to its opposite value.
Toggle a given bit to its opposite value whose position is given as "bitPosition".
Toggle a given bit to its opposite value whose position is given as "bitPosition". Toggles a given bit to its opposite value.
Definition at line 604 of file APInt.cpp.
References clearBit(), and setBit().
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Converts a float to APInt bits.
The conversion does not do a translation from float to integer, it just re-interprets the bits of the float.
Definition at line 1486 of file APInt.h.
References APInt(), F(), I, and T.
Referenced by llvm::APFloat::APFloat(), and llvm::ExecutionEngine::getConstantValue().
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Compute the number of active bits in the value.
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.
Definition at line 1276 of file APInt.h.
References countLeadingZeros().
Referenced by areUsedBitsDense(), getActiveWords(), getLimitedValue(), getMinSignedBits(), llvm::ScalarEvolution::getSmallConstantTripCount(), llvm::ScalarEvolution::getSmallConstantTripMultiple(), getZExtValue(), isDereferenceablePointer(), llvm::ConstantExpr::isGEPWithNoNotionalOverIndexing(), isIndexInRangeOfSequentialType(), isIntN(), isRunOfOnes(), operator*=(), roundToDouble(), sqrt(), udiv(), udivrem(), llvm::ConstantInt::uge(), ult(), urem(), and llvm::InstCombiner::visitICmpInstWithInstAndIntCst().
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Compute the number of active words in the value of this APInt.
This is used in conjunction with getActiveData to extract the raw value of the APInt.
Definition at line 1282 of file APInt.h.
References getActiveBits().
Get the all-ones value.
Definition at line 450 of file APInt.h.
References APInt().
Referenced by llvm::ComputeMaskedBits(), DemandedBitsLHSMask(), llvm::Constant::getAllOnesValue(), llvm::APFloat::getAllOnesValue(), getHighBitsSet(), getLowBitsSet(), llvm::IntegerType::getMask(), getMaxValue(), llvm::SelectionDAG::getNode(), llvm::SelectionDAG::getNOT(), getSignedMaxValue(), isConditionalZeroOrAllOnes(), LowerSIGN_EXTEND_AVX512(), magicu(), llvm::PPCTargetLowering::PerformDAGCombine(), llvm::TargetLowering::SimplifyDemandedBits(), SimplifyICmpInst(), llvm::TargetLowering::SimplifySetCC(), llvm::InstCombiner::visitICmpInst(), llvm::InstCombiner::visitInsertElementInst(), llvm::InstCombiner::visitSelectInst(), llvm::InstCombiner::visitShuffleVectorInst(), and WidenMaskArithmetic().
Get bits required for string value.
This method determines how many bits are required to hold the APInt equivalent of the string given by str.
Definition at line 610 of file APInt.cpp.
References llvm::StringRef::begin(), llvm::StringRef::empty(), isNegative(), llvm::Intrinsic::log, logBase2(), and llvm::StringRef::size().
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Get a value with a block of bits set.
Constructs an APInt value that has a contiguous range of bits set. The bits from loBit (inclusive) to hiBit (exclusive) will be set. All other bits will be zero. For example, with parameters(32, 0, 16) you would get 0x0000FFFF. If hiBit is less than loBit then the set bits "wrap". For example, with parameters (32, 28, 4), you would get 0xF000000F.
| numBits | the intended bit width of the result |
| loBit | the index of the lowest bit set. |
| hiBit | the index of the highest bit set. |
Definition at line 495 of file APInt.h.
References getHighBitsSet(), getLowBitsSet(), and shl().
Referenced by llvm::SelectionDAG::ComputeMaskedBits(), llvm::BuildVectorSDNode::isConstantSplat(), llvm::TargetLowering::SimplifyDemandedBits(), and llvm::InstCombiner::visitCallInst().
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Return the number of bits in the APInt.
Definition at line 1252 of file APInt.h.
Referenced by llvm::GEPOperator::accumulateConstantOffset(), llvm::CompileUnit::addConstantFPValue(), llvm::CompileUnit::addConstantValue(), llvm::TargetLowering::BuildUDIV(), llvm::ComputeMaskedBits(), ComputeMaskedBitsAddSub(), llvm::SparcTargetLowering::computeMaskedBitsForTargetNode(), llvm::AMDGPUTargetLowering::computeMaskedBitsForTargetNode(), llvm::ARMTargetLowering::computeMaskedBitsForTargetNode(), llvm::PPCTargetLowering::computeMaskedBitsForTargetNode(), llvm::X86TargetLowering::computeMaskedBitsForTargetNode(), llvm::TargetLowering::computeMaskedBitsForTargetNode(), llvm::computeMaskedBitsLoad(), ComputeMaskedBitsMul(), llvm::ComputeMultiple(), llvm::ComputeNumSignBits(), llvm::SelectionDAG::ComputeNumSignBits(), llvm::FunctionLoweringInfo::ComputePHILiveOutRegInfo(), ComputeRange(), ComputeSignedMinMaxValuesFromKnownBits(), ComputeUnsignedMinMaxValuesFromKnownBits(), llvm::ConstantFoldBinaryInstruction(), llvm::ConstantRange::ConstantRange(), llvm::APFloat::convertToInteger(), llvm::MDBuilder::createRange(), emitGlobalConstantFP(), llvm::InstCombiner::FoldICmpShrCst(), gcd(), llvm::ConstantInt::get(), getAdjustedPtr(), llvm::StringRef::getAsInteger(), llvm::ConstantRange::getBitWidth(), llvm::ConstantInt::getBitWidth(), llvm::ExecutionEngine::getConstantValue(), GetLinearExpression(), llvm::FunctionLoweringInfo::GetLiveOutRegInfo(), getNaturalGEPRecursively(), getNaturalGEPWithOffset(), llvm::SelectionDAG::getNode(), getShiftAmount(), getSplat(), IncorporateWeight(), llvm::isBytewiseValue(), isLikelyComplexAddressComputation(), llvm::APIntOps::isMask(), llvm::APSInt::isSameValue(), isSameValue(), isStridedPtr(), LoadIntFromMemory(), magic(), magicu(), llvm::ICmpInst::makeConstantRange(), llvm::MaskedValueIsZero(), operator&(), operator[](), operator|(), performORCombine(), PerformORCombine(), llvm::Interpreter::run(), sdiv(), sge(), sgt(), ShrinkDemandedConstant(), llvm::TargetLowering::SimplifyDemandedBits(), sle(), slt(), SolveLinEquationWithOverflow(), srem(), sshl_ov(), StoreIntToMemory(), llvm::Value::stripAndAccumulateInBoundsConstantOffsets(), llvm::ConstantRange::subtract(), llvm::APFloat::toString(), toString(), udivrem(), uge(), ugt(), ule(), ult(), llvm::InstCombiner::visitAnd(), llvm::InstCombiner::visitICmpInst(), llvm::InstCombiner::visitICmpInstWithInstAndIntCst(), and llvm::WriteConstantInternal().
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Convert APInt to a boolean value.
This converts the APInt to a boolean value as a test against zero.
Definition at line 404 of file APInt.h.
Referenced by llvm::SelectionDAG::ComputeMaskedBits(), llvm::isKnownToBeAPowerOfTwo(), and llvm::PPCTargetLowering::SelectAddressRegReg().
Compute an APInt containing numBits highbits from this APInt.
HiBits - This function returns the high "numBits" bits of this APInt.
Get an APInt with the same BitWidth as this APInt, just zero mask the low bits and right shift to the least significant bit.
Definition at line 671 of file APInt.cpp.
References llvm::APIntOps::lshr().
Get a value with high bits set.
Constructs an APInt value that has the top hiBitsSet bits set.
| numBits | the bitwidth of the result |
| hiBitsSet | the number of high-order bits set in the result. |
Definition at line 510 of file APInt.h.
References APInt(), getAllOnesValue(), and shl().
Referenced by CanEvaluateShifted(), CanEvaluateTruncated(), CanEvaluateZExtd(), llvm::ComputeMaskedBits(), llvm::SelectionDAG::ComputeMaskedBits(), ComputeMaskedBitsAddSub(), llvm::ARMTargetLowering::computeMaskedBitsForTargetNode(), llvm::X86TargetLowering::computeMaskedBitsForTargetNode(), llvm::computeMaskedBitsLoad(), ComputeMaskedBitsMul(), llvm::InstCombiner::FoldICmpShrCst(), FoldMaskAndShiftToScale(), llvm::InstCombiner::FoldShiftByConstant(), getBitsSet(), GetShiftedValue(), isTruncWithZeroHighBitsInput(), PerformSELECTCombine(), PerformShiftCombine(), llvm::ConstantRange::signExtend(), llvm::TargetLowering::SimplifyDemandedBits(), llvm::TargetLowering::SimplifySetCC(), llvm::InstCombiner::visitAdd(), llvm::InstCombiner::visitCallInst(), llvm::InstCombiner::visitICmpInstWithInstAndIntCst(), llvm::InstCombiner::visitShl(), and llvm::InstCombiner::visitZExt().
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If this value is smaller than the specified limit, return it, otherwise return the limit value. This causes the value to saturate to the limit.
Definition at line 408 of file APInt.h.
References getActiveBits(), and getZExtValue().
Referenced by ashr(), llvm::ComputeMultiple(), llvm::ConstantInt::getLimitedValue(), GetLinearExpression(), llvm::A64Imms::isFPImm(), lshr(), rotl(), rotr(), shl(), and SwitchToLookupTable().
Compute an APInt containing numBits lowbits from this APInt.
LoBits - This function returns the low "numBits" bits of this APInt.
Get an APInt with the same BitWidth as this APInt, just zero mask the high bits.
Definition at line 676 of file APInt.cpp.
References llvm::APIntOps::lshr(), and llvm::APIntOps::shl().
Get a value with low bits set.
Constructs an APInt value that has the bottom loBitsSet bits set.
| numBits | the bitwidth of the result |
| loBitsSet | the number of low-order bits set in the result. |
Definition at line 528 of file APInt.h.
References APInt(), getAllOnesValue(), and lshr().
Referenced by CanEvaluateShifted(), llvm::ComputeMaskedBits(), llvm::SelectionDAG::ComputeMaskedBits(), ComputeMaskedBitsAddSub(), ComputeMaskedBitsMul(), llvm::ConstantFoldBinaryInstruction(), llvm::ConstantFoldInstOperands(), DemandedBitsLHSMask(), llvm::InstCombiner::FoldAndOfICmps(), llvm::InstCombiner::FoldShiftByConstant(), getBitsSet(), GetShiftedValue(), llvm::SelectionDAG::getZeroExtendInReg(), llvm::APIntOps::isMask(), MultiplyOverflows(), PerformBTCombine(), ProcessUGT_ADDCST_ADD(), llvm::ConstantRange::signExtend(), llvm::TargetLowering::SimplifyDemandedBits(), llvm::TargetLowering::SimplifySetCC(), llvm::InstCombiner::visitAnd(), llvm::InstCombiner::visitAShr(), llvm::InstCombiner::visitCallInst(), llvm::InstCombiner::visitICmpInst(), llvm::InstCombiner::visitICmpInstWithInstAndIntCst(), llvm::InstCombiner::visitLShr(), and llvm::InstCombiner::visitZExt().
Gets maximum unsigned value of APInt for specific bit width.
Definition at line 418 of file APInt.h.
References getAllOnesValue().
Referenced by llvm::ConstantRange::ConstantRange(), llvm::InstCombiner::FoldFCmp_IntToFP_Cst(), llvm::APSInt::getMaxValue(), llvm::ConstantRange::getUnsignedMax(), llvm::ScalarEvolution::getUnsignedRange(), llvm::ScalarEvolution::getZeroExtendExpr(), llvm::TargetLowering::SimplifySetCC(), and llvm::ConstantRange::truncate().
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Get the minimum bit size for this signed APInt.
Computes the minimum bit width for this APInt while considering it to be a signed (and probably negative) value. If the value is not negative, this function returns the same value as getActiveBits()+1. Otherwise, it returns the smallest bit width that will retain the negative value. For example, -1 can be written as 0b1 or 0xFFFFFFFFFF. 0b1 is shorter and so for -1, this function will always return 1.
Definition at line 1295 of file APInt.h.
References countLeadingOnes(), getActiveBits(), and isNegative().
Referenced by canFoldIVIncExpr(), getSExtValue(), and isSignedIntN().
Gets minimum unsigned value of APInt for a specific bit width.
Definition at line 430 of file APInt.h.
References APInt().
Referenced by llvm::ConstantRange::ConstantRange(), llvm::InstCombiner::FoldFCmp_IntToFP_Cst(), llvm::APSInt::getMinValue(), llvm::ConstantRange::getUnsignedMin(), llvm::ScalarEvolution::getUnsignedRange(), llvm::ScalarEvolution::getZeroExtendExpr(), llvm::ICmpInst::makeConstantRange(), llvm::ConstantRange::makeICmpRegion(), and llvm::TargetLowering::SimplifySetCC().
Get the '0' value.
Definition at line 457 of file APInt.h.
References APInt().
Referenced by llvm::ConstantRange::binaryAnd(), llvm::ConstantRange::binaryOr(), llvm::ConstantFoldCastInstruction(), llvm::SelectionDAG::getNode(), llvm::Constant::getNullValue(), llvm::ConstantRange::makeICmpRegion(), llvm::ObjectSizeOffsetVisitor::ObjectSizeOffsetVisitor(), and stripAndComputeConstantOffsets().
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Computes the number of leading bits of this APInt that are equal to its sign bit.
Definition at line 1360 of file APInt.h.
References countLeadingOnes(), countLeadingZeros(), and isNegative().
Referenced by llvm::SelectionDAG::ComputeNumSignBits(), and llvm::FunctionLoweringInfo::ComputePHILiveOutRegInfo().
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Get the number of words.
Here one word's bitwidth equals to that of uint64_t.
Definition at line 1259 of file APInt.h.
References getNumWords().
Referenced by ashr(), byteSwap(), clearAllBits(), llvm::APFloat::convertFromAPInt(), llvm::APFloat::convertToInteger(), countLeadingOnes(), countTrailingZeros(), emitGlobalConstantFP(), flipAllBits(), getNumWords(), llvm::hash_value(), lshr(), operator!(), operator&=(), operator*=(), operator+(), operator++(), operator+=(), operator-(), operator--(), operator-=(), operator=(), operator^=(), operator|=(), Profile(), setAllBits(), sext(), toString(), trunc(), and zext().
Return an APInt with exactly one bit set in the result.
Definition at line 476 of file APInt.h.
References setBit().
Referenced by BinomialCoefficient(), dyn_castFoldableMul(), llvm::InstCombiner::FoldICmpShrCst(), IncorporateWeight(), llvm::InstCombiner::visitICmpInst(), llvm::InstCombiner::visitICmpInstWithInstAndIntCst(), and llvm::ConstantRange::zeroExtend().
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This function returns a pointer to the internal storage of the APInt. This is useful for writing out the APInt in binary form without any conversions.
Definition at line 570 of file APInt.h.
Referenced by llvm::CompileUnit::addConstantFPValue(), llvm::CompileUnit::addConstantValue(), llvm::APFloat::convertFromAPInt(), llvm::APFloat::convertFromZeroExtendedInteger(), emitGlobalConstantFP(), llvm::HexagonLowerToMC(), LoadIntFromMemory(), sext(), StoreIntToMemory(), llvm::ExecutionEngine::StoreValueToMemory(), toString(), trunc(), llvm::WriteConstantInternal(), WriteConstants(), and zext().
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Get sign extended value.
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.
Definition at line 1318 of file APInt.h.
References getMinSignedBits(), pVal, and VAL.
Referenced by llvm::CompileUnit::addConstantValue(), llvm::InstCombiner::commonPointerCastTransforms(), DecomposeGEPExpression(), llvm::ARM_AM::getFP32Imm(), llvm::ARM_AM::getFP64Imm(), llvm::GetPointerBaseWithConstantOffset(), llvm::ConstantInt::getSExtValue(), getVShiftImm(), isLikelyComplexAddressComputation(), isStridedPtr(), LLVMGenericValueToInt(), llvm::TargetLowering::LowerAsmOperandForConstraint(), lowerConstant(), llvm::TargetLowering::SimplifySetCC(), toString(), and llvm::InstCombiner::visitGetElementPtrInst().
Get the SignBit for a specific bit width.
This is just a wrapper function of getSignedMinValue(), and it helps code readability when we want to get a SignBit.
Definition at line 443 of file APInt.h.
References getSignedMinValue().
Referenced by llvm::SelectionDAG::ComputeMaskedBits(), ComputeMaskedBitsAddSub(), decomposeBitTestICmp(), DemandedBitsLHSMask(), LowerVSETCC(), llvm::SelectionDAG::SignBitIsZero(), llvm::TargetLowering::SimplifyDemandedBits(), llvm::InstCombiner::visitAShr(), llvm::InstCombiner::visitSDiv(), and llvm::InstCombiner::visitSRem().
Gets maximum signed value of APInt for a specific bit width.
Definition at line 423 of file APInt.h.
References clearBit(), and getAllOnesValue().
Referenced by llvm::InstCombiner::FoldFCmp_IntToFP_Cst(), llvm::InstCombiner::FoldICmpAddOpCst(), llvm::APSInt::getMaxValue(), getOverflowLimitForStep(), llvm::ConstantRange::getSignedMax(), llvm::ScalarEvolution::getSignedRange(), llvm::isKnownNonZero(), llvm::ConstantRange::isSignWrappedSet(), magicu(), MultiplyOverflows(), SimplifyICmpInst(), and llvm::TargetLowering::SimplifySetCC().
Gets minimum signed value of APInt for a specific bit width.
Definition at line 433 of file APInt.h.
References setBit().
Referenced by BinomialCoefficient(), llvm::InstCombiner::FoldFCmp_IntToFP_Cst(), llvm::APSInt::getMinValue(), getOverflowLimitForStep(), getSignBit(), llvm::ConstantRange::getSignedMin(), llvm::ScalarEvolution::getSignedRange(), llvm::ConstantRange::isSignWrappedSet(), magic(), magicu(), llvm::ICmpInst::makeConstantRange(), llvm::ConstantRange::makeICmpRegion(), MultiplyOverflows(), SimplifyICmpInst(), and llvm::TargetLowering::SimplifySetCC().
Return a value containing V broadcasted over NewLen bits.
Definition at line 542 of file APInt.h.
References getBitWidth(), I, and zextOrSelf().
Referenced by getMemsetValue().
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Get zero extended value.
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.
Definition at line 1306 of file APInt.h.
References getActiveBits(), pVal, and VAL.
Referenced by llvm::CompileUnit::addConstantValue(), llvm::ComputeNumSignBits(), llvm::ConstantFoldBinaryInstruction(), llvm::ConstantFoldTerminator(), llvm::R600TargetLowering::EmitInstrWithCustomInserter(), llvm::Interpreter::exitCalled(), ExtractBranchMetadata(), FoldOperand(), FoldReinterpretLoadFromConstPtr(), GetBranchWeights(), llvm::ExecutionEngine::getConstantValue(), llvm::ARM_AM::getFP32Imm(), llvm::ARM_AM::getFP64Imm(), getLimitedValue(), getNaturalGEPRecursively(), llvm::SelectionDAG::getNode(), llvm::ConstantInt::getZExtValue(), IncorporateWeight(), LLVMGenericValueToInt(), llvm::AArch64TargetLowering::LowerBUILD_VECTOR(), PerformANDCombine(), performDSPShiftCombine(), PerformORCombine(), llvm::NVPTXFloatMCExpr::PrintImpl(), llvm::ExecutionEngine::runFunctionAsMain(), llvm::PPCTargetLowering::SelectAddressRegImm(), SymbolicallyEvaluateGEP(), llvm::APFloat::toString(), toString(), llvm::ConstantInt::uge(), llvm::Interpreter::visitAShr(), llvm::Interpreter::visitLShr(), llvm::Interpreter::visitShl(), and llvm::WriteConstantInternal().
This operation tests if there are any pairs of corresponding bits between this APInt and RHS that are both set.
Definition at line 1144 of file APInt.h.
Referenced by llvm::SelectionDAGISel::CheckAndMask(), llvm::SelectionDAGISel::CheckOrMask(), llvm::SelectionDAG::ComputeMaskedBits(), llvm::TargetLowering::TargetLoweringOpt::ShrinkDemandedConstant(), and llvm::TargetLowering::SimplifyDemandedBits().
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Determine if all bits are set.
This checks to see if the value has all bits of the APInt are set or not.
Definition at line 340 of file APInt.h.
References VAL.
Referenced by areUsedBitsDense(), llvm::ConstantRange::binaryAnd(), llvm::ConstantFoldBinaryInstruction(), createAndInstr(), llvm::InstCombiner::FoldAndOfICmps(), llvm::InstCombiner::FoldOrWithConstants(), getExactSDiv(), isMaxValue(), llvm::ConstantInt::isMinusOne(), llvm::PatternMatch::is_all_ones::isValue(), isVectorAllOnes(), performORCombine(), sdiv_ov(), llvm::TargetLowering::SimplifyDemandedBits(), and llvm::InstCombiner::visitICmpInstWithInstAndIntCst().
Check if this APInt has an N-bits unsigned integer value.
Definition at line 376 of file APInt.h.
References getActiveBits(), and N.
Referenced by llvm::APIntOps::isIntN().
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Determine if this is the largest signed value.
This checks to see if the value of this APInt is the maximum signed value for the APInt's bit width.
Definition at line 356 of file APInt.h.
References countPopulation(), isNegative(), and VAL.
Referenced by llvm::ConstantInt::isMaxValue(), and llvm::ScalarEvolution::SimplifyICmpOperands().
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Determine if this is the largest unsigned value.
This checks to see if the value of this APInt is the maximum unsigned value for the APInt's bit width.
Definition at line 350 of file APInt.h.
References isAllOnesValue().
Referenced by llvm::ConstantRange::ConstantRange(), llvm::ConstantRange::isFullSet(), llvm::ConstantInt::isMaxValue(), and llvm::ScalarEvolution::SimplifyICmpOperands().
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Determine if this is the smallest signed value.
This checks to see if the value of this APInt is the minimum signed value for the APInt's bit width.
Definition at line 371 of file APInt.h.
References isNegative(), isPowerOf2(), and VAL.
Referenced by llvm::ConstantFoldBinaryInstruction(), llvm::ScalarEvolution::getSignedRange(), llvm::ConstantInt::isMinValue(), isSignBit(), sdiv_ov(), llvm::ConstantRange::signExtend(), and llvm::ScalarEvolution::SimplifyICmpOperands().
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Determine if this is the smallest unsigned value.
This checks to see if the value of this APInt is the minimum unsigned value for the APInt's bit width.
Definition at line 365 of file APInt.h.
Referenced by llvm::ConstantRange::binaryOr(), llvm::ConstantRange::ConstantRange(), llvm::ScalarEvolution::getUnsignedRange(), IncorporateWeight(), llvm::ConstantRange::isEmptySet(), llvm::ConstantInt::isMinValue(), LinearizeExprTree(), SimplifyICmpInst(), llvm::ScalarEvolution::SimplifyICmpOperands(), SolveQuadraticEquation(), and llvm::InstCombiner::visitICmpInstWithInstAndIntCst().
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Determine sign of this APInt.
This tests the high bit of this APInt to determine if it is set.
Definition at line 322 of file APInt.h.
Referenced by abs(), ashr(), llvm::TargetLowering::BuildSDIV(), llvm::SelectionDAG::ComputeMaskedBits(), ComputeMaskedBitsAddSub(), ComputeMaskedBitsMul(), llvm::ComputeNumSignBits(), llvm::SelectionDAG::ComputeNumSignBits(), computePointerICmp(), llvm::APFloat::convertFromAPInt(), FoldReinterpretLoadFromConstPtr(), getBitsNeeded(), getMinSignedBits(), getNumSignBits(), llvm::ScalarEvolution::isKnownNegative(), llvm::ScalarEvolution::isKnownNonNegative(), isMaxSignedValue(), isMinSignedValue(), llvm::ConstantInt::isNegative(), llvm::SCEV::isNonConstantNegative(), isNonNegative(), llvm::APSInt::isSameValue(), magic(), multiplicativeInverse(), sdiv(), sdivrem(), slt(), srem(), toString(), llvm::InstCombiner::visitICmpInst(), and llvm::InstCombiner::visitMul().
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Determine if this APInt Value is non-negative (>= 0)
This tests the high bit of the APInt to determine if it is unset.
Definition at line 327 of file APInt.h.
References isNegative().
Referenced by llvm::ComputeMaskedBits(), isStrictlyPositive(), LowerSDIV(), sadd_ov(), sshl_ov(), ssub_ov(), and llvm::InstCombiner::visitICmpInstWithInstAndIntCst().
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Check if this APInt's value is a power of two greater than zero.
Definition at line 390 of file APInt.h.
References llvm::isPowerOf2_64(), and VAL.
Referenced by llvm::ComputeMaskedBits(), llvm::SelectionDAG::ComputeMaskedBits(), exactLogBase2(), llvm::InstCombiner::FoldAndOfICmps(), llvm::InstCombiner::FoldOrOfICmps(), foldSelectICmpAnd(), GatherConstantCompares(), getLogBase2Vector(), getTypeOfMaskedICmp(), isMinSignedValue(), llvm::PatternMatch::is_power2::isValue(), LowerSDIV(), ProcessUGT_ADDCST_ADD(), llvm::InstCombiner::visitAdd(), llvm::InstCombiner::visitICmpInst(), llvm::InstCombiner::visitICmpInstWithInstAndIntCst(), and llvm::InstCombiner::visitMul().
Determine if two APInts have the same value, after zero-extending one of them (if needed!) to ensure that the bit-widths match.
Definition at line 554 of file APInt.h.
References getBitWidth(), and zext().
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Check if the APInt's value is returned by getSignBit.
Definition at line 399 of file APInt.h.
References isMinSignedValue().
Referenced by isSignBitCheck(), llvm::PatternMatch::is_sign_bit::isValue(), PerformSELECTCombine(), llvm::InstCombiner::visitAdd(), and llvm::InstCombiner::visitICmpInstWithInstAndIntCst().
Check if this APInt has an N-bits signed integer value.
Definition at line 382 of file APInt.h.
References getMinSignedBits(), and N.
Referenced by llvm::APIntOps::isSignedIntN().
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Determine if this APInt Value is positive.
This tests if the value of this APInt is positive (> 0). Note that 0 is not a positive value.
Definition at line 335 of file APInt.h.
References isNonNegative().
Referenced by llvm::TargetLowering::BuildSDIV(), llvm::InstCombiner::FoldICmpDivCst(), llvm::ScalarEvolution::isKnownNonPositive(), and llvm::ScalarEvolution::isKnownPositive().
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Definition at line 1500 of file APInt.h.
References countLeadingZeros().
Referenced by exactLogBase2(), foldSelectICmpAnd(), foldSelectICmpAndOr(), foldUDivPow2Cst(), foldUDivShl(), getBitsNeeded(), getLogBase2Vector(), llvm::APIntOps::logBase2(), llvm::InstCombiner::visitAdd(), llvm::InstCombiner::visitICmpInst(), llvm::InstCombiner::visitICmpInstWithInstAndIntCst(), and llvm::InstCombiner::visitMul().
Logical right-shift function.
Logical right-shift this APInt by shiftAmt.
Definition at line 1127 of file APInt.cpp.
References APInt(), getNumWords(), and lshrNear().
Referenced by areUsedBitsDense(), BinomialCoefficient(), llvm::TargetLowering::BuildUDIV(), llvm::SelectionDAG::ComputeMaskedBits(), llvm::ConstantFoldBinaryInstruction(), ExtractConstantBytes(), llvm::SelectionDAG::FoldConstantArithmetic(), llvm::InstCombiner::FoldICmpShrCst(), llvm::InstCombiner::FoldShiftByConstant(), llvm::SelectionDAG::getConstant(), llvm::ARM_AM::getFP32Imm(), llvm::ARM_AM::getFP64Imm(), getLowBitsSet(), llvm::isBytewiseValue(), llvm::BuildVectorSDNode::isConstantSplat(), lowerMSABinaryBitImmIntr(), llvm::ConstantRange::lshr(), lshr(), llvm::APIntOps::lshr(), magic(), magicu(), llvm::APSInt::operator>>(), rotl(), rotr(), llvm::TargetLowering::SimplifyDemandedBits(), SimplifyICmpInst(), llvm::TargetLowering::SimplifySetCC(), SolveLinEquationWithOverflow(), llvm::APFloat::toString(), toString(), llvm::Interpreter::visitLShr(), and llvm::InstCombiner::visitXor().
Logical right-shift function.
Logical right-shift this APInt by shiftAmt.
Definition at line 1121 of file APInt.cpp.
References getLimitedValue(), and lshr().
| APInt::ms APInt::magic | ( | ) | const |
Calculate the magic numbers required to implement a signed integer division by a constant as a sequence of multiplies, adds and shifts. Requires that the divisor not be 0, 1, or -1. Taken from "Hacker's Delight", Henry S. Warren, Jr., chapter 10.
Definition at line 1395 of file APInt.cpp.
References abs(), getBitWidth(), getSignedMinValue(), isNegative(), lshr(), llvm::APInt::ms::m, llvm::APInt::ms::s, udiv(), uge(), ult(), and urem().
Referenced by llvm::TargetLowering::BuildSDIV().
Calculate the magic numbers required to implement an unsigned integer division by a constant as a sequence of multiplies, adds and shifts. Requires that the divisor not be 0. Taken from "Hacker's Delight", Henry S. Warren, Jr., chapter 10. LeadingZeros can be used to simplify the calculation if the upper bits of the divided value are known zero.
Definition at line 1439 of file APInt.cpp.
References llvm::APInt::mu::a, allOnes(), getAllOnesValue(), getBitWidth(), getSignedMaxValue(), getSignedMinValue(), lshr(), llvm::APInt::mu::m, llvm::APInt::mu::s, udiv(), uge(), ult(), and urem().
Referenced by llvm::TargetLowering::BuildUDIV().
Computes the multiplicative inverse of this APInt for a given modulo. The iterative extended Euclidean algorithm is used to solve for this value, however we simplify it to speed up calculating only the inverse, and take advantage of div+rem calculations. We also use some tricks to avoid copying (potentially large) APInts around.
Definition at line 1352 of file APInt.cpp.
References APInt(), isNegative(), udivrem(), and ult().
Referenced by BinomialCoefficient(), and SolveLinEquationWithOverflow().
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Multiplication assignment operator.
Multiplies this APInt by RHS and assigns the result to *this.
Definition at line 355 of file APInt.cpp.
References clearAllBits(), getActiveBits(), getMemory(), getNumWords(), llvm::Intrinsic::memcpy, mul(), pVal, and VAL.
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| APInt & APInt::operator++ | ( | ) |
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| APInt & APInt::operator-- | ( | ) |
Copy assignment operator.
Definition at line 648 of file APInt.h.
References VAL.
Referenced by llvm::APSInt::operator=().
| APInt & APInt::operator= | ( | uint64_t | RHS | ) |
Assignment operator.
The RHS value is assigned to *this. If the significant bits in RHS exceed the bit width, the excess bits are truncated. If the bit width is larger than 64, the value is zero filled in the unspecified high order bits.
Definition at line 154 of file APInt.cpp.
References getNumWords(), llvm::Intrinsic::memset, and pVal.
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Array-indexing support.
Definition at line 948 of file APInt.h.
References getBitWidth(), pVal, and VAL.
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Unary bitwise complement operator.
Performs a bitwise complement operation on this APInt.
Definition at line 613 of file APInt.h.
References flipAllBits().
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Bitwise OR function.
Performs a bitwise or on *this and RHS. This is implemented bny simply calling operator|.
Definition at line 790 of file APInt.h.
References operator|().
| void APInt::print | ( | raw_ostream & | OS, |
| bool | isSigned | ||
| ) | const |
Definition at line 2261 of file APInt.cpp.
References llvm::SmallString< InternalLen >::str(), and toString().
Referenced by emitDebugValueComment(), and llvm::operator<<().
| void APInt::Profile | ( | FoldingSetNodeID & | id | ) | const |
Profile - This method 'profiles' an APInt for use with FoldingSet.
Used to insert APInt objects, or objects that contain APInt objects, into FoldingSets.
Definition at line 165 of file APInt.cpp.
References llvm::FoldingSetNodeID::AddInteger(), getNumWords(), and pVal.
Referenced by llvm::APSInt::Profile().
Rotate left by rotateAmt.
Definition at line 1240 of file APInt.cpp.
References getLimitedValue(), and rotl().
Rotate right by rotateAmt.
Definition at line 1251 of file APInt.cpp.
References getLimitedValue(), and rotr().
| double APInt::roundToDouble | ( | bool | isSigned | ) | const |
Converts this APInt to a double value.
RoundToDouble - This function converts this APInt to a double.
| Sign Exponent Fraction Bias |
|---|
| 1[63] 11[62-52] 52[51-00] 1023 |
Definition at line 858 of file APInt.cpp.
References llvm::Intrinsic::exp, getActiveBits(), I, pVal, sext(), and T.
Referenced by llvm::ExecutionEngine::getConstantValue(), and llvm::APIntOps::RoundAPIntToDouble().
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Converts this unsigned APInt to a double value.
Definition at line 1436 of file APInt.h.
References roundToDouble().
Referenced by roundToDouble(), and signedRoundToDouble().
Definition at line 1996 of file APInt.cpp.
References isNonNegative().
Referenced by llvm::ConstantFoldCall(), and MaintainNoSignedWrap().
Signed division function for APInt.
Signed divide this APInt by APInt RHS.
Definition at line 1879 of file APInt.cpp.
References isNegative(), and udiv().
Referenced by llvm::ConstantFoldBinaryInstruction(), findGCD(), llvm::SelectionDAG::FoldConstantArithmetic(), llvm::ExecutionEngine::getConstantValue(), getExactSDiv(), getNaturalGEPRecursively(), getNaturalGEPWithOffset(), llvm::APSInt::operator/(), llvm::APSInt::operator/=(), llvm::APIntOps::sdiv(), sdiv_ov(), SimplifyICmpInst(), smul_ov(), SolveQuadraticEquation(), and llvm::Interpreter::visitBinaryOperator().
Definition at line 2022 of file APInt.cpp.
References isAllOnesValue(), isMinSignedValue(), and sdiv().
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Definition at line 1978 of file APInt.cpp.
References isNegative(), and udivrem().
Referenced by ceilingOfQuotient(), findGCD(), and floorOfQuotient().
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Set every bit to 1.
Definition at line 1200 of file APInt.h.
References getNumWords(), pVal, and VAL.
Referenced by llvm::ComputeMaskedBits().
| void APInt::setBit | ( | unsigned | bitPosition | ) |
Set a given bit to 1.
Set the given bit to 1 whose position is given as "bitPosition".
Definition at line 583 of file APInt.cpp.
References pVal.
Referenced by llvm::ComputeMaskedBits(), ComputeMaskedBitsMul(), llvm::ComputeMultiple(), ComputeSignedMinMaxValuesFromKnownBits(), flipBit(), getOneBitSet(), llvm::ConstantRange::getSetSize(), getSignedMinValue(), SolveLinEquationWithOverflow(), llvm::ConstantRange::truncate(), and llvm::InstCombiner::visitExtractElementInst().
Sign extend to a new 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.
Definition at line 942 of file APInt.cpp.
References APInt(), getMemory(), getNumWords(), getRawData(), and pVal.
Referenced by ComputeRange(), llvm::APSInt::extend(), llvm::ExecutionEngine::getConstantValue(), MultiplyOverflows(), roundToDouble(), sdiv(), sextOrSelf(), sextOrTrunc(), llvm::ConstantRange::signExtend(), srem(), and llvm::InstCombiner::visitCallInst().
Sign extend or truncate to width.
Make this APInt have the bit width given by width. The value is sign extended, truncated, or left alone to make it that width.
Definition at line 1010 of file APInt.cpp.
References sext(), and trunc().
Referenced by llvm::GEPOperator::accumulateConstantOffset(), llvm::APSInt::extOrTrunc(), and llvm::SelectionDAG::getNode().
Signed greather or equal comparison.
Regards both *this and RHS as signed quantities and compares them for validity of the greater-or-equal relationship.
Definition at line 1132 of file APInt.h.
References slt().
Referenced by llvm::ConstantFoldCompareInstruction(), llvm::SelectionDAG::FoldSetCC(), llvm::SCEVAddRecExpr::getNumIterationsInRange(), and llvm::APSInt::operator>=().
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Signed greater or equal comparison.
Regards both *this as a signed quantity and compares it with RHS for the validity of the greater-or-equal relationship.
Definition at line 1140 of file APInt.h.
References APInt(), getBitWidth(), and sge().
Referenced by sge().
Signed greather than comparison.
Regards both *this and RHS as signed quantities and compares them for the validity of the greater-than relationship.
Definition at line 1100 of file APInt.h.
Referenced by ceilingOfQuotient(), llvm::ConstantFoldCompareInstruction(), floorOfQuotient(), llvm::InstCombiner::FoldAndOfICmps(), llvm::InstCombiner::FoldOrOfICmps(), llvm::SelectionDAG::FoldSetCC(), HasAddOverflow(), HasSubOverflow(), maxAPInt(), MultiplyOverflows(), llvm::APSInt::operator>(), llvm::APIntOps::smax(), SwitchToLookupTable(), and llvm::InstCombiner::visitICmpInstWithInstAndIntCst().
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Signed greater than comparison.
Regards both *this as a signed quantity and compares it with RHS for the validity of the greater-than relationship.
Definition at line 1108 of file APInt.h.
References APInt(), getBitWidth(), and sgt().
Referenced by sgt().
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Left-shift function.
Left-shift this APInt by shiftAmt.
Definition at line 856 of file APInt.h.
Referenced by llvm::ConstantFoldBinaryInstruction(), getBitsSet(), getHighBitsSet(), operator<<(), operator<<=(), PerformSHLCombine(), rotl(), rotr(), llvm::APIntOps::RoundDoubleToAPInt(), llvm::ConstantRange::shl(), shl(), llvm::APIntOps::shl(), sqrt(), and llvm::Interpreter::visitShl().
Left-shift function.
Left-shift this APInt by shiftAmt.
Definition at line 1185 of file APInt.cpp.
References getLimitedValue(), and shl().
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Converts this signed APInt to a double value.
Definition at line 1439 of file APInt.h.
References roundToDouble().
Referenced by llvm::ExecutionEngine::getConstantValue(), llvm::APIntOps::RoundSignedAPIntToDouble(), and llvm::APIntOps::RoundSignedAPIntToFloat().
Signed less or equal comparison.
Regards both *this and RHS as signed quantities and compares them for validity of the less-or-equal relationship.
Definition at line 1068 of file APInt.h.
Referenced by llvm::ConstantFoldCompareInstruction(), llvm::SelectionDAG::FoldSetCC(), llvm::APSInt::operator<=(), and llvm::InstCombiner::visitICmpInst().
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Signed less or equal comparison.
Regards both *this as a signed quantity and compares it with RHS for the validity of the less-or-equal relationship.
Definition at line 1076 of file APInt.h.
References APInt(), getBitWidth(), and sle().
Referenced by sle().
Signed less than comparison.
Regards both *this and RHS as signed quantities and compares them for validity of the less-than relationship.
Definition at line 547 of file APInt.cpp.
References flipAllBits(), isNegative(), ugt(), ult(), and VAL.
Referenced by ceilingOfQuotient(), llvm::ConstantFoldCompareInstruction(), findGCD(), floorOfQuotient(), llvm::SelectionDAG::FoldSetCC(), llvm::MDNode::getMostGenericRange(), HasAddOverflow(), HasSubOverflow(), minAPInt(), MultiplyOverflows(), llvm::APSInt::operator<(), sge(), sgt(), sle(), llvm::APIntOps::smin(), SwitchToLookupTable(), and llvm::InstCombiner::visitICmpInst().
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Signed less than comparison.
Regards both *this as a signed quantity and compares it with RHS for the validity of the less-than relationship.
Definition at line 1044 of file APInt.h.
References APInt(), getBitWidth(), and slt().
Referenced by slt().
Definition at line 2028 of file APInt.cpp.
References sdiv().
Referenced by llvm::ConstantFoldCall().
| APInt APInt::sqrt | ( | ) | const |
Compute the square root.
Definition at line 1269 of file APInt.cpp.
References APInt(), getActiveBits(), llvm::Intrinsic::round, shl(), udiv(), ule(), and ult().
Function for signed remainder operation.
Signed remainder operation on APInt.
Definition at line 1927 of file APInt.cpp.
References isNegative(), and urem().
Referenced by llvm::ConstantFoldBinaryInstruction(), findGCD(), llvm::SelectionDAG::FoldConstantArithmetic(), llvm::ExecutionEngine::getConstantValue(), getExactSDiv(), isRemainderZero(), llvm::APSInt::operator%(), llvm::APSInt::operator%=(), llvm::APIntOps::srem(), and llvm::Interpreter::visitBinaryOperator().
Definition at line 2048 of file APInt.cpp.
References countLeadingOnes(), countLeadingZeros(), getBitWidth(), and isNonNegative().
Definition at line 2009 of file APInt.cpp.
References isNonNegative().
Referenced by llvm::ConstantFoldCall(), and MaintainNoSignedWrap().
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Assign one bignum to another.
Definition at line 2335 of file APInt.cpp.
Referenced by llvm::APFloat::convert(), llvm::APFloat::convertFromSignExtendedInteger(), powerOf5(), tcDivide(), and tcExtract().
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Clear the given bit of a bignum. Zero-based.
Definition at line 2373 of file APInt.cpp.
References llvm::integerPartWidth.
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Comparison (unsigned) of two bignums.
Definition at line 2827 of file APInt.cpp.
Referenced by tcDivide().
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Definition at line 2817 of file APInt.cpp.
Referenced by tcNegate().
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Decrement a bignum in-place. Return the borrow flag.
Definition at line 2859 of file APInt.cpp.
Referenced by llvm::APFloat::next().
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If RHS is zero LHS and REMAINDER are left unchanged, return one. Otherwise set LHS to LHS / RHS with the fractional part discarded, set REMAINDER to the remainder, return zero. i.e.
OLD_LHS = RHS * LHS + REMAINDER
SCRATCH is a bignum of the same size as the operands and result for use by the routine; its contents need not be initialized and are destroyed. LHS, REMAINDER and SCRATCH must be distinct.
Definition at line 2674 of file APInt.cpp.
References llvm::integerPartWidth, tcAssign(), tcCompare(), tcMSB(), tcSet(), tcShiftLeft(), tcShiftRight(), and tcSubtract().
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Copy the bit vector of width srcBITS from SRC, starting at bit srcLSB, to DST, of dstCOUNT parts, such that the bit srcLSB becomes the least significant bit of DST. All high bits above srcBITS in DST are zero-filled.
Definition at line 2422 of file APInt.cpp.
References llvm::integerPartWidth, tcAssign(), and tcShiftRight().
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Extract the given bit of a bignum; returns 0 or 1. Zero-based.
Definition at line 2358 of file APInt.cpp.
References llvm::integerPartWidth.
Referenced by llvm::APFloat::convertFromSignExtendedInteger(), llvm::APFloat::convertFromZeroExtendedInteger(), llvm::APFloat::isDenormal(), llvm::APFloat::isSignaling(), and lostFractionThroughTruncation().
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DST = LHS * RHS, where DST has width the sum of the widths of the operands. No overflow occurs. DST must be disjoint from both operands. Returns the number of parts required to hold the result.
Definition at line 2640 of file APInt.cpp.
References tcMultiplyPart(), and tcSet().
Referenced by powerOf5().
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Increment a bignum in-place. Return the carry flag.
Definition at line 2846 of file APInt.cpp.
Referenced by tcNegate().
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Returns the bit number of the least or most significant set bit of a number. If the input number has no bits set -1U is returned.
Definition at line 2382 of file APInt.cpp.
References llvm::integerPartWidth.
Referenced by lostFractionThroughTruncation().
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Definition at line 2400 of file APInt.cpp.
References llvm::integerPartWidth.
Referenced by tcDivide().
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DST = LHS * RHS, where DST has the same width as the operands and is filled with the least significant parts of the result. Returns one if overflow occurred, otherwise zero. DST must be disjoint from both operands.
Definition at line 2617 of file APInt.cpp.
References tcMultiplyPart(), and tcSet().
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DST += SRC * MULTIPLIER + PART if add is true DST = SRC * MULTIPLIER + PART if add is false
Requires 0 <= DSTPARTS <= SRCPARTS + 1. If DST overlaps SRC they must start at the same point, i.e. DST == SRC.
If DSTPARTS == SRC_PARTS + 1 no overflow occurs and zero is returned. Otherwise DST is filled with the least significant DSTPARTS parts of the result, and if all of the omitted higher parts were zero return zero, otherwise overflow occurred and return one.
Definition at line 2524 of file APInt.cpp.
References llvm::integerPartWidth.
Referenced by tcFullMultiply(), and tcMultiply().
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Negate a bignum in-place.
Definition at line 2506 of file APInt.cpp.
References tcComplement(), and tcIncrement().
Referenced by llvm::APFloat::convertFromSignExtendedInteger().
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Sets the least significant part of a bignum to the input value, and zeroes out higher parts.
Definition at line 2322 of file APInt.cpp.
Referenced by llvm::APFloat::convert(), llvm::APFloat::next(), tcDivide(), tcFullMultiply(), and tcMultiply().
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Set the given bit of a bignum. Zero-based.
Definition at line 2366 of file APInt.cpp.
References llvm::integerPartWidth.
Referenced by llvm::APFloat::convert(), and llvm::APFloat::next().
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Set the least significant BITS and clear the rest.
Definition at line 2874 of file APInt.cpp.
References llvm::integerPartWidth.
Referenced by llvm::APFloat::convertToInteger().
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Shift a bignum left COUNT bits. Shifted in bits are zero. There are no restrictions on COUNT.
Definition at line 2721 of file APInt.cpp.
References llvm::integerPartWidth.
Referenced by llvm::APFloat::convert(), llvm::APFloat::convertToInteger(), and tcDivide().
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Shift a bignum right COUNT bits. Shifted in bits are zero. There are no restrictions on COUNT.
Definition at line 2755 of file APInt.cpp.
References llvm::integerPartWidth.
Referenced by shiftRight(), tcDivide(), and tcExtract().
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DST -= RHS + CARRY where CARRY is zero or one. Returns the carry flag.
Definition at line 2481 of file APInt.cpp.
Referenced by tcDivide().
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| void APInt::toString | ( | SmallVectorImpl< char > & | Str, |
| unsigned | Radix, | ||
| bool | Signed, | ||
| bool | formatAsCLiteral = false |
||
| ) | const |
Converts an APInt to a string and append it to Str. Str is commonly a SmallString.
Definition at line 2124 of file APInt.cpp.
References llvm::SmallVectorImpl< T >::append(), llvm::SmallVectorTemplateCommon< T, typename >::begin(), llvm::SmallVectorTemplateCommon< T, typename >::end(), flipAllBits(), getBitWidth(), getNumWords(), getRawData(), getSExtValue(), getZExtValue(), I, isNegative(), llvm_unreachable, lshr(), N, llvm::cl::Prefix, llvm::SmallVectorTemplateBase< T, isPodLike >::push_back(), and llvm::SmallVectorTemplateCommon< T, typename >::size().
Referenced by print(), llvm::APSInt::toString(), toString(), toStringSigned(), and toStringUnsigned().
Return the APInt as a std::string.
Note that this is an inefficient method. It is better to pass in a SmallVector/SmallString to the methods above to avoid thrashing the heap for the string.
toString - This returns the APInt as a std::string. Note that this is an inefficient method. It is better to pass in a SmallVector/SmallString to the methods above.
Definition at line 2246 of file APInt.cpp.
References llvm::NVPTX::PTXLdStInstCode::Signed, llvm::SmallString< InternalLen >::str(), and toString().
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Considers the APInt to be signed and converts it into a string in the radix given. The radix can be 2, 8, 10, 16, or 36.
Definition at line 1418 of file APInt.h.
References toString().
Referenced by dump().
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Considers the APInt to be unsigned and converts it into a string in the radix given. The radix can be 2, 8, 10 16, or 36.
Definition at line 1412 of file APInt.h.
References toString().
Referenced by dump(), and llvm::Interpreter::run().
Truncate to new width.
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.
Definition at line 919 of file APInt.cpp.
References APInt(), getMemory(), getNumWords(), getRawData(), and pVal.
Referenced by areUsedBitsDense(), BinomialCoefficient(), llvm::ComputeMaskedBits(), llvm::SelectionDAG::ComputeMaskedBits(), ExtractConstantBytes(), llvm::SelectionDAG::getConstant(), llvm::ExecutionEngine::getConstantValue(), GetLinearExpression(), llvm::SelectionDAG::getNode(), llvm::isBytewiseValue(), llvm::BuildVectorSDNode::isConstantSplat(), lowerMSABinaryBitImmIntr(), performShiftToAllZeros(), sextOrTrunc(), llvm::TargetLowering::SimplifyDemandedBits(), SolveLinEquationWithOverflow(), llvm::APSInt::trunc(), llvm::ConstantRange::truncate(), and zextOrTrunc().
Definition at line 2003 of file APInt.cpp.
References ult().
Referenced by llvm::ConstantFoldCall().
Unsigned division operation.
Perform an unsigned divide operation on this APInt by RHS. Both this and RHS are treated as unsigned quantities for purposes of this division.
Definition at line 1842 of file APInt.cpp.
References APInt(), getActiveBits(), pVal, ult(), and VAL.
Referenced by llvm::ConstantFoldBinaryInstruction(), llvm::SelectionDAG::FoldConstantArithmetic(), llvm::ExecutionEngine::getConstantValue(), magic(), magicu(), llvm::APSInt::operator/(), llvm::APSInt::operator/=(), sdiv(), SimplifyICmpInst(), sqrt(), SymbolicallyEvaluateGEP(), llvm::ConstantRange::udiv(), llvm::APIntOps::udiv(), umul_ov(), and llvm::Interpreter::visitBinaryOperator().
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Dual division/remainder interface.
Sometimes it is convenient to divide two APInt values and obtain both the quotient and remainder. This function does both operations in the same computation making it a little more efficient. The pair of input arguments may overlap with the pair of output arguments. It is safe to call udivrem(X, Y, X, Y), for example.
Definition at line 1938 of file APInt.cpp.
References APInt(), getActiveBits(), getBitWidth(), pVal, ult(), and VAL.
Referenced by multiplicativeInverse(), sdivrem(), llvm::APFloat::toString(), and llvm::ConstantRange::truncate().
Unsigned greater or equal comparison.
Regards both *this and RHS as unsigned quantities and compares them for validity of the greater-or-equal relationship.
Definition at line 1116 of file APInt.h.
References ult().
Referenced by llvm::ConstantFoldCompareInstruction(), llvm::SelectionDAG::FoldSetCC(), getNaturalGEPRecursively(), magic(), magicu(), llvm::APSInt::operator>=(), performShiftToAllZeros(), SymbolicallyEvaluateGEP(), llvm::ConstantRange::truncate(), llvm::ConstantRange::unionWith(), and llvm::InstCombiner::visitICmpInst().
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Unsigned greater or equal comparison.
Regards both *this as an unsigned quantity and compares it with RHS for the validity of the greater-or-equal relationship.
Definition at line 1124 of file APInt.h.
References APInt(), getBitWidth(), and uge().
Referenced by uge().
Unsigned greather than comparison.
Regards both *this and RHS as unsigned quantities and compares them for the validity of the greater-than relationship.
Definition at line 1084 of file APInt.h.
Referenced by llvm::ConstantFoldCompareInstruction(), llvm::InstCombiner::FoldAndOfICmps(), llvm::InstCombiner::FoldOrOfICmps(), llvm::SelectionDAG::FoldSetCC(), GatherConstantCompares(), HasSubOverflow(), llvm::ConstantRange::isWrappedSet(), MultiplyOverflows(), llvm::APSInt::operator>(), llvm::ConstantRange::shl(), slt(), llvm::APIntOps::umax(), llvm::ConstantRange::unionWith(), usub_ov(), and llvm::ObjectSizeOffsetVisitor::visitCallSite().
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Unsigned greater than comparison.
Regards both *this as an unsigned quantity and compares it with RHS for the validity of the greater-than relationship.
Definition at line 1092 of file APInt.h.
References APInt(), getBitWidth(), and ugt().
Referenced by ugt().
Unsigned less or equal comparison.
Regards both *this and RHS as unsigned quantities and compares them for validity of the less-or-equal relationship.
Definition at line 1052 of file APInt.h.
Referenced by llvm::ConstantFoldCompareInstruction(), llvm::ConstantRange::contains(), llvm::InstCombiner::FoldOrOfICmps(), llvm::SelectionDAG::FoldSetCC(), llvm::ConstantRange::intersectWith(), llvm::APSInt::operator<=(), sqrt(), llvm::ConstantRange::truncate(), llvm::ConstantRange::unionWith(), and llvm::InstCombiner::visitICmpInst().
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Unsigned less or equal comparison.
Regards both *this as an unsigned quantity and compares it with RHS for the validity of the less-or-equal relationship.
Definition at line 1060 of file APInt.h.
References APInt(), getBitWidth(), and ule().
Referenced by ule().
Unsigned less than comparison.
Regards both *this and RHS as unsigned quantities and compares them for the validity of the less-than relationship.
Definition at line 515 of file APInt.cpp.
References getActiveBits(), pVal, and VAL.
Referenced by llvm::ConstantRange::add(), CanEvaluateShifted(), computePointerICmp(), llvm::ConstantFoldCompareInstruction(), ConstantIntSortPredicate(), llvm::ConstantRange::contains(), llvm::SelectionDAG::FoldSetCC(), llvm::getObjectSize(), HasAddOverflow(), IncorporateWeight(), llvm::ConstantRange::intersectWith(), magic(), magicu(), multiplicativeInverse(), llvm::APSInt::operator<(), SimplifyICmpInst(), slt(), sqrt(), llvm::ConstantRange::sub(), llvm::ConstantRange::truncate(), uadd_ov(), udiv(), udivrem(), uge(), ugt(), ule(), llvm::APIntOps::umin(), llvm::ConstantRange::unionWith(), urem(), and llvm::InstCombiner::visitICmpInst().
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Unsigned less than comparison.
Regards both *this as an unsigned quantity and compares it with RHS for the validity of the less-than relationship.
Definition at line 1028 of file APInt.h.
References APInt(), getBitWidth(), and ult().
Referenced by ult().
Definition at line 2038 of file APInt.cpp.
References udiv().
Referenced by llvm::ConstantFoldCall(), and llvm::InstCombiner::visitCallInst().
Unsigned remainder operation.
Perform an unsigned remainder operation on this APInt with RHS being the divisor. Both this and RHS are treated as unsigned quantities for purposes of this operation. Note that this is a true remainder operation and not a modulo operation because the sign follows the sign of the dividend which is *this.
Definition at line 1890 of file APInt.cpp.
References APInt(), getActiveBits(), pVal, ult(), and VAL.
Referenced by llvm::ConstantFoldBinaryInstruction(), llvm::SelectionDAG::FoldConstantArithmetic(), llvm::ExecutionEngine::getConstantValue(), llvm::ScalarEvolution::getUDivExpr(), magic(), magicu(), llvm::APSInt::operator%(), llvm::APSInt::operator%=(), srem(), llvm::APIntOps::urem(), and llvm::Interpreter::visitBinaryOperator().
Definition at line 2016 of file APInt.cpp.
References ugt().
Referenced by llvm::ConstantFoldCall().
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inline |
Bitwise XOR function.
Performs a bitwise XOR operation on *this and RHS. This is implemented through the usage of operator^.
Definition at line 812 of file APInt.h.
References operator^().
Zero extend to a new width.
This operation zero extends the APInt to a new width. The 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.
Definition at line 983 of file APInt.cpp.
References APInt(), getMemory(), getNumWords(), getRawData(), llvm::Intrinsic::memset, and pVal.
Referenced by BinomialCoefficient(), llvm::X86TargetLowering::BuildFILD(), llvm::ComputeMaskedBits(), llvm::SelectionDAG::ComputeMaskedBits(), llvm::APSInt::extend(), llvm::InstCombiner::FoldAndOfICmps(), gcd(), llvm::StringRef::getAsInteger(), llvm::SelectionDAG::getConstant(), llvm::ExecutionEngine::getConstantValue(), GetLinearExpression(), llvm::ConstantRange::getSetSize(), insertInteger(), isSameValue(), llvm::ConstantRange::multiply(), MultiplyOverflows(), llvm::PPCTargetLowering::PerformDAGCombine(), llvm::ConstantRange::signExtend(), llvm::TargetLowering::SimplifyDemandedBits(), SolveLinEquationWithOverflow(), llvm::APFloat::toString(), llvm::ConstantRange::truncate(), llvm::InstCombiner::visitCallInst(), llvm::InstCombiner::visitICmpInst(), llvm::InstCombiner::visitICmpInstWithInstAndIntCst(), WidenMaskArithmetic(), llvm::ConstantRange::zeroExtend(), zextOrSelf(), and zextOrTrunc().
Zero extend or truncate to width.
Make this APInt have the bit width given by width. The value is zero extended, or left alone to make it that width.
Definition at line 1018 of file APInt.cpp.
References zext().
Referenced by getSplat(), and llvm::ObjectSizeOffsetVisitor::visitCallSite().
Zero extend or truncate to width.
Make this APInt have the bit width given by width. The value is zero extended, truncated, or left alone to make it that width.
Definition at line 1002 of file APInt.cpp.
References trunc(), and zext().
Referenced by llvm::ComputeMaskedBits(), llvm::FunctionLoweringInfo::ComputePHILiveOutRegInfo(), llvm::Interpreter::exitCalled(), llvm::APSInt::extOrTrunc(), llvm::ExecutionEngine::getConstantValue(), llvm::FunctionLoweringInfo::GetLiveOutRegInfo(), llvm::SelectionDAG::getNode(), llvm::BuildVectorSDNode::isConstantSplat(), ShrinkDemandedConstant(), SymbolicallyEvaluateBinop(), and SymbolicallyEvaluateGEP().
| uint64_t* llvm::APInt::pVal |
Used to store the >64 bits integer value.
Definition at line 82 of file APInt.h.
Referenced by bitsToDouble(), bitsToFloat(), byteSwap(), clearAllBits(), clearBit(), countLeadingOnes(), countTrailingZeros(), flipAllBits(), getRawData(), getSExtValue(), getZExtValue(), llvm::hash_value(), operator!(), operator&=(), operator*=(), operator+(), operator++(), operator+=(), operator-(), operator--(), operator-=(), operator=(), operator[](), operator^=(), operator|=(), Profile(), roundToDouble(), setAllBits(), setBit(), sext(), trunc(), udiv(), udivrem(), ult(), urem(), zext(), and ~APInt().
| uint64_t llvm::APInt::VAL |
Used to store the <= 64 bits integer value.
Definition at line 81 of file APInt.h.
Referenced by APInt(), bitsToDouble(), bitsToFloat(), clearAllBits(), countLeadingZeros(), countPopulation(), countTrailingOnes(), flipAllBits(), getRawData(), getSExtValue(), getZExtValue(), llvm::hash_value(), isAllOnesValue(), isMaxSignedValue(), isMinSignedValue(), isPowerOf2(), operator!(), operator&(), operator&=(), operator*(), operator*=(), operator+(), operator++(), operator+=(), operator-(), operator--(), operator-=(), operator=(), operator==(), operator[](), operator^(), operator^=(), operator|(), operator|=(), setAllBits(), shl(), slt(), udiv(), udivrem(), ult(), and urem().
Generated on Tue Mar 18 2014 10:39:51 for LLVM by
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