Function LLVMGetDebugLocFilename 

pub unsafe extern "C" fn LLVMGetDebugLocFilename(
    Val: LLVMValueRef,
    Length: *mut c_uint,
) -> *const c_char

Return the filename of the debug location for this value, which must be an llvm::Instruction, llvm::GlobalVariable, or llvm::Function.

@see llvm::Instruction::getDebugLoc() @see llvm::GlobalVariable::getDebugInfo() @see llvm::Function::getSubprogram()