llvm_lib::core::values::uses

Function get_operand_use

Source 
pub fn get_operand_use(val: &ValueRef, index: u32) -> Option<UseRef>
Expand description

Obtain the use of an operand at a specific index in a LLVM User value.

§Details

Retrieves the use of an operand at a specified index from a value in LLVM IR.

This function wraps the LLVMGetOperandUse function from the LLVM core library. It returns the UseRef associated with the operand at the specified index (index) from the value represented by ValueRef. In LLVM IR, a “use” refers to an instance where an operand is used by an instruction or another value. If the index is out of bounds or the operand use cannot be retrieved, the function returns None.

§Parameters

  • index: The index of the operand use to retrieve. This index should be within the bounds of the number of operands the value has.

§Returns

Returns an Option<UseRef>:

  • Some(UseRef) containing the retrieved operand use if the index is valid and the operand use is found.
  • None if the index is out of bounds or the operand use cannot be retrieved.