Function LLVMSetInstructionCallConv 

pub unsafe extern "C" fn LLVMSetInstructionCallConv(
    Instr: LLVMValueRef,
    CC: c_uint,
)

Set the calling convention for a call instruction.

This expects an LLVMValueRef that corresponds to a llvm::CallInst or llvm::InvokeInst.

@see llvm::CallInst::setCallingConv() @see llvm::InvokeInst::setCallingConv()