Instructions

Collaboration diagram for Instructions:

Modules
	Call Sites and Invocations
	PHI Nodes

Functions
int	LLVMHasMetadata (LLVMValueRef Val)
LLVMValueRef	LLVMGetMetadata (LLVMValueRef Val, unsigned KindID)
void	LLVMSetMetadata (LLVMValueRef Val, unsigned KindID, LLVMValueRef Node)
LLVMBasicBlockRef	LLVMGetInstructionParent (LLVMValueRef Inst)
LLVMValueRef	LLVMGetNextInstruction (LLVMValueRef Inst)
LLVMValueRef	LLVMGetPreviousInstruction (LLVMValueRef Inst)
void	LLVMInstructionEraseFromParent (LLVMValueRef Inst)
LLVMOpcode	LLVMGetInstructionOpcode (LLVMValueRef Inst)
LLVMIntPredicate	LLVMGetICmpPredicate (LLVMValueRef Inst)
LLVMBasicBlockRef	LLVMGetSwitchDefaultDest (LLVMValueRef SwitchInstr)

Detailed Description

Functions in this group relate to the inspection and manipulation of individual instructions.

In the C++ API, an instruction is modeled by llvm::Instruction. This class has a large number of descendents. llvm::Instruction is a llvm::Value and in the C API, instructions are modeled by LLVMValueRef.

This group also contains sub-groups which operate on specific llvm::Instruction types, e.g. llvm::CallInst.

Function Documentation

LLVMIntPredicate LLVMGetICmpPredicate

(

LLVMValueRef

Inst

)

Obtain the predicate of an instruction.

This is only valid for instructions that correspond to llvm::ICmpInst or llvm::ConstantExpr whose opcode is llvm::Instruction::ICmp.

See Also

llvm::ICmpInst::getPredicate()

Definition at line 1770 of file Core.cpp.

References I, and llvm::unwrap().

LLVMOpcode LLVMGetInstructionOpcode

(

LLVMValueRef

Inst

)

Obtain the code opcode for an individual instruction.

See Also

llvm::Instruction::getOpCode()

Definition at line 1779 of file Core.cpp.

References llvm::CallingConv::C, map_to_llvmopcode(), and llvm::unwrap().

LLVMBasicBlockRef LLVMGetInstructionParent

(

LLVMValueRef

Inst

)

Obtain the basic block to which an instruction belongs.

See Also

llvm::Instruction::getParent()

Definition at line 1730 of file Core.cpp.

References getParent(), and llvm::wrap().

LLVMValueRef LLVMGetMetadata	(	LLVMValueRef	Val,
		unsigned	KindID
	)

Return metadata associated with an instruction value.

Definition at line 495 of file Core.cpp.

References llvm::wrap().

LLVMValueRef LLVMGetNextInstruction

(

LLVMValueRef

Inst

)

Obtain the instruction that occurs after the one specified.

The next instruction will be from the same basic block.

If this is the last instruction in a basic block, NULL will be returned.

Definition at line 1750 of file Core.cpp.

References llvm::BasicBlock::end(), llvm::Instruction::getParent(), I, and llvm::wrap().

LLVMValueRef LLVMGetPreviousInstruction

(

LLVMValueRef

Inst

)

Obtain the instruction that occurred before this one.

If the instruction is the first instruction in a basic block, NULL will be returned.

Definition at line 1758 of file Core.cpp.

References llvm::BasicBlock::begin(), llvm::Instruction::getParent(), I, and llvm::wrap().

LLVMBasicBlockRef LLVMGetSwitchDefaultDest

(

LLVMValueRef

SwitchInstr

)

Obtain the default destination basic block of a switch instruction.

This only works on llvm::SwitchInst instructions.

See Also

llvm::SwitchInst::getDefaultDest()

Definition at line 1848 of file Core.cpp.

References llvm::wrap().

int LLVMHasMetadata

(

LLVMValueRef

Val

)

Determine whether an instruction has any metadata attached.

Definition at line 491 of file Core.cpp.

void LLVMInstructionEraseFromParent

(

LLVMValueRef

Inst

)

Remove and delete an instruction.

The instruction specified is removed from its containing building block and then deleted.

See Also

llvm::Instruction::eraseFromParent()

Definition at line 1766 of file Core.cpp.

void LLVMSetMetadata	(	LLVMValueRef	Val,
		unsigned	KindID,
		LLVMValueRef	Node
	)

Set metadata associated with an instruction value.

Definition at line 499 of file Core.cpp.