MathExtras.h File Reference

#include "llvm/Support/Compiler.h"
#include "llvm/Support/SwapByteOrder.h"
#include <cassert>
#include <cstring>
#include <type_traits>

Include dependency graph for MathExtras.h:

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Namespaces
namespace	llvm
	List of target independent CodeGen pass IDs.
Defines
#define	R2(n)   n, n + 2 * 64, n + 1 * 64, n + 3 * 64
#define	R4(n)   R2(n), R2(n + 2 * 16), R2(n + 1 * 16), R2(n + 3 * 16)
#define	R6(n)   R4(n), R4(n + 2 * 4), R4(n + 1 * 4), R4(n + 3 * 4)
Enumerations
enum	llvm::ZeroBehavior { llvm::ZB_Undefined, llvm::ZB_Max, llvm::ZB_Width }
	The behavior an operation has on an input of 0. More...
Functions
template<typename T >
std::enable_if < std::numeric_limits< T > ::is_integer &&!std::numeric_limits< T > ::is_signed, std::size_t > ::type	llvm::countTrailingZeros (T Val, ZeroBehavior ZB=ZB_Width)
	Count number of 0's from the least significant bit to the most stopping at the first 1.
template<typename T >
std::enable_if < std::numeric_limits< T > ::is_integer &&!std::numeric_limits< T > ::is_signed, std::size_t > ::type	llvm::countLeadingZeros (T Val, ZeroBehavior ZB=ZB_Width)
	Count number of 0's from the most significant bit to the least stopping at the first 1.
template<typename T >
std::enable_if < std::numeric_limits< T > ::is_integer &&!std::numeric_limits< T > ::is_signed, T >::type	llvm::findFirstSet (T Val, ZeroBehavior ZB=ZB_Max)
	Get the index of the first set bit starting from the least significant bit.
template<typename T >
std::enable_if < std::numeric_limits< T > ::is_integer &&!std::numeric_limits< T > ::is_signed, T >::type	llvm::findLastSet (T Val, ZeroBehavior ZB=ZB_Max)
	Get the index of the last set bit starting from the least significant bit.
template<typename T >
T	llvm::reverseBits (T Val)
	Reverse the bits in Val.
uint32_t	llvm::Hi_32 (uint64_t Value)
	Hi_32 - This function returns the high 32 bits of a 64 bit value.
uint32_t	llvm::Lo_32 (uint64_t Value)
	Lo_32 - This function returns the low 32 bits of a 64 bit value.
uint64_t	llvm::Make_64 (uint32_t High, uint32_t Low)
template<unsigned N>
bool	llvm::isInt (int64_t x)
	isInt - Checks if an integer fits into the given bit width.
template<>
bool	llvm::isInt< 8 > (int64_t x)
template<>
bool	llvm::isInt< 16 > (int64_t x)
template<>
bool	llvm::isInt< 32 > (int64_t x)
template<unsigned N, unsigned S>
bool	llvm::isShiftedInt (int64_t x)
template<unsigned N>
bool	llvm::isUInt (uint64_t x)
	isUInt - Checks if an unsigned integer fits into the given bit width.
template<>
bool	llvm::isUInt< 8 > (uint64_t x)
template<>
bool	llvm::isUInt< 16 > (uint64_t x)
template<>
bool	llvm::isUInt< 32 > (uint64_t x)
template<unsigned N, unsigned S>
bool	llvm::isShiftedUInt (uint64_t x)
bool	llvm::isUIntN (unsigned N, uint64_t x)
bool	llvm::isIntN (unsigned N, int64_t x)
bool	llvm::isMask_32 (uint32_t Value)
bool	llvm::isMask_64 (uint64_t Value)
bool	llvm::isShiftedMask_32 (uint32_t Value)
bool	llvm::isShiftedMask_64 (uint64_t Value)
bool	llvm::isPowerOf2_32 (uint32_t Value)
bool	llvm::isPowerOf2_64 (uint64_t Value)
uint16_t	llvm::ByteSwap_16 (uint16_t Value)
uint32_t	llvm::ByteSwap_32 (uint32_t Value)
uint64_t	llvm::ByteSwap_64 (uint64_t Value)
unsigned	llvm::CountLeadingOnes_32 (uint32_t Value)
unsigned	llvm::CountLeadingOnes_64 (uint64_t Value)
unsigned	llvm::CountTrailingOnes_32 (uint32_t Value)
unsigned	llvm::CountTrailingOnes_64 (uint64_t Value)
unsigned	llvm::CountPopulation_32 (uint32_t Value)
unsigned	llvm::CountPopulation_64 (uint64_t Value)
unsigned	llvm::Log2_32 (uint32_t Value)
unsigned	llvm::Log2_64 (uint64_t Value)
unsigned	llvm::Log2_32_Ceil (uint32_t Value)
unsigned	llvm::Log2_64_Ceil (uint64_t Value)
uint64_t	llvm::GreatestCommonDivisor64 (uint64_t A, uint64_t B)
double	llvm::BitsToDouble (uint64_t Bits)
float	llvm::BitsToFloat (uint32_t Bits)
uint64_t	llvm::DoubleToBits (double Double)
uint32_t	llvm::FloatToBits (float Float)
int	llvm::IsNAN (float f)
	Platform-independent wrappers for the C99 isnan() function.
int	llvm::IsNAN (double d)
int	llvm::IsInf (float f)
	Platform-independent wrappers for the C99 isinf() function.
int	llvm::IsInf (double d)
uint64_t	llvm::MinAlign (uint64_t A, uint64_t B)
uintptr_t	llvm::alignAddr (void *Addr, size_t Alignment)
	Aligns Addr to Alignment bytes, rounding up.
size_t	llvm::alignmentAdjustment (void *Ptr, size_t Alignment)
	Returns the necessary adjustment for aligning Ptr to Alignment bytes, rounding up.
uint64_t	llvm::NextPowerOf2 (uint64_t A)
uint64_t	llvm::PowerOf2Floor (uint64_t A)
uint64_t	llvm::RoundUpToAlignment (uint64_t Value, uint64_t Align)
uint64_t	llvm::OffsetToAlignment (uint64_t Value, uint64_t Align)
int64_t	llvm::abs64 (int64_t x)
template<unsigned B>
int32_t	llvm::SignExtend32 (uint32_t x)
int32_t	llvm::SignExtend32 (uint32_t X, unsigned B)
	Sign extend number in the bottom B bits of X to a 32-bit int. Requires 0 < B <= 32.
template<unsigned B>
int64_t	llvm::SignExtend64 (uint64_t x)
int64_t	llvm::SignExtend64 (uint64_t X, unsigned B)
	Sign extend number in the bottom B bits of X to a 64-bit int. Requires 0 < B <= 64.
Variables
static const unsigned char	llvm::BitReverseTable256 [256]
	Macro compressed bit reversal table for 256 bits.
const float	llvm::huge_valf = HUGE_VALF

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Define Documentation

#define R2

(

n

)

n, n + 2 * 64, n + 1 * 64, n + 3 * 64

Referenced by foldLogOpOfMaskedICmpsHelper(), llvm::isARMArea1Register(), and llvm::isARMLowRegister().

#define R4

(

n

)

R2(n), R2(n + 2 * 16), R2(n + 1 * 16), R2(n + 3 * 16)

Referenced by llvm::isARMArea1Register(), and llvm::isARMLowRegister().

#define R6

(

n

)

R4(n), R4(n + 2 * 4), R4(n + 1 * 4), R4(n + 3 * 4)

Referenced by llvm::ARMBaseRegisterInfo::ARMBaseRegisterInfo(), llvm::isARMArea1Register(), and llvm::isARMLowRegister().