LLVM API Documentation

Functions
Scalar constants
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)

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

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:
IntTyInteger type to obtain value of.
NThe value the returned instance should refer to.
SignExtendWhether to sign extend the produced value.

Definition at line 705 of file Core.cpp.

References llvm::ConstantInt::get(), and llvm::wrap().

long long LLVMConstIntGetSExtValue ( LLVMValueRef  ConstantVal)

Obtain the sign extended value for an integer constant value.

See also:
llvm::ConstantInt::getSExtValue()

Definition at line 748 of file Core.cpp.

unsigned long long LLVMConstIntGetZExtValue ( LLVMValueRef  ConstantVal)

Obtain the zero extended value for an integer constant value.

See also:
llvm::ConstantInt::getZExtValue()

Definition at line 744 of file Core.cpp.

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()

Definition at line 710 of file Core.cpp.

References llvm::ConstantInt::get(), llvm::IntegerType::getBitWidth(), llvm::Type::getContext(), llvm::makeArrayRef(), and llvm::wrap().

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()
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()
LLVMValueRef LLVMConstReal ( LLVMTypeRef  RealTy,
double  N 
)

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

Definition at line 731 of file Core.cpp.

References llvm::ConstantFP::get(), llvm::unwrap(), and llvm::wrap().

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.

Definition at line 735 of file Core.cpp.

References llvm::ConstantFP::get(), llvm::unwrap(), and llvm::wrap().

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

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