Scalar constants

Collaboration diagram for Scalar constants:

Functions
LLVMValueRef	LLVMConstInt (LLVMTypeRef IntTy, unsigned long long N, LLVMBool SignExtend)
LLVMValueRef	LLVMConstIntOfArbitraryPrecision (LLVMTypeRef IntTy, unsigned NumWords, const uint64_t Words[])
LLVMValueRef	LLVMConstIntOfString (LLVMTypeRef IntTy, const char *Text, uint8_t Radix)
LLVMValueRef	LLVMConstIntOfStringAndSize (LLVMTypeRef IntTy, const char *Text, unsigned SLen, uint8_t Radix)
LLVMValueRef	LLVMConstReal (LLVMTypeRef RealTy, double N)
LLVMValueRef	LLVMConstRealOfString (LLVMTypeRef RealTy, const char *Text)
LLVMValueRef	LLVMConstRealOfStringAndSize (LLVMTypeRef RealTy, const char *Text, unsigned SLen)
unsigned long long	LLVMConstIntGetZExtValue (LLVMValueRef ConstantVal)
long long	LLVMConstIntGetSExtValue (LLVMValueRef ConstantVal)
double	LLVMConstRealGetDouble (LLVMValueRef ConstantVal, LLVMBool *losesInfo)

Detailed Description

Functions in this group model LLVMValueRef instances that correspond to constants referring to scalar types.

For integer types, the LLVMTypeRef parameter should correspond to a llvm::IntegerType instance and the returned LLVMValueRef will correspond to a llvm::ConstantInt.

For floating point types, the LLVMTypeRef returned corresponds to a llvm::ConstantFP.

Function Documentation

LLVMConstInt()

LLVMValueRef LLVMConstInt	(	LLVMTypeRef	IntTy,
		unsigned long long	N,
		LLVMBool	SignExtend
	)

Obtain a constant value for an integer type.

The returned value corresponds to a llvm::ConstantInt.

See also

llvm::ConstantInt::get()

Parameters

IntTy	Integer type to obtain value of.
N	The value the returned instance should refer to.
SignExtend	Whether to sign extend the produced value.

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LLVMConstIntGetSExtValue()

long long LLVMConstIntGetSExtValue

(

LLVMValueRef

ConstantVal

)

Obtain the sign extended value for an integer constant value.

See also

llvm::ConstantInt::getSExtValue()

LLVMConstIntGetZExtValue()

unsigned long long LLVMConstIntGetZExtValue

(

LLVMValueRef

ConstantVal

)

Obtain the zero extended value for an integer constant value.

See also

llvm::ConstantInt::getZExtValue()

LLVMConstIntOfArbitraryPrecision()

LLVMValueRef LLVMConstIntOfArbitraryPrecision	(	LLVMTypeRef	IntTy,
		unsigned	NumWords,
		const uint64_t	Words[]
	)

Obtain a constant value for an integer of arbitrary precision.

See also

llvm::ConstantInt::get()

LLVMConstIntOfString()

LLVMValueRef LLVMConstIntOfString	(	LLVMTypeRef	IntTy,
		const char *	Text,
		uint8_t	Radix
	)

Obtain a constant value for an integer parsed from a string.

A similar API, LLVMConstIntOfStringAndSize is also available. If the string's length is available, it is preferred to call that function instead.

See also

llvm::ConstantInt::get()

LLVMConstIntOfStringAndSize()

LLVMValueRef LLVMConstIntOfStringAndSize	(	LLVMTypeRef	IntTy,
		const char *	Text,
		unsigned	SLen,
		uint8_t	Radix
	)

Obtain a constant value for an integer parsed from a string with specified length.

See also

llvm::ConstantInt::get()

LLVMConstReal()

LLVMValueRef LLVMConstReal	(	LLVMTypeRef	RealTy,
		double	N
	)

Obtain a constant value referring to a double floating point value.

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LLVMConstRealGetDouble()

double LLVMConstRealGetDouble	(	LLVMValueRef	ConstantVal,
		LLVMBool *	losesInfo
	)

Obtain the double value for an floating point constant value. losesInfo indicates if some precision was lost in the conversion.

See also

llvm::ConstantFP::getDoubleValue

LLVMConstRealOfString()

LLVMValueRef LLVMConstRealOfString	(	LLVMTypeRef	RealTy,
		const char *	Text
	)

Obtain a constant for a floating point value parsed from a string.

A similar API, LLVMConstRealOfStringAndSize is also available. It should be used if the input string's length is known.

LLVMConstRealOfStringAndSize()

LLVMValueRef LLVMConstRealOfStringAndSize	(	LLVMTypeRef	RealTy,
		const char *	Text,
		unsigned	SLen
	)

Obtain a constant for a floating point value parsed from a string.