restrictions, LLVM does not need to have special knowledge of the
operand bundle to not miscompile programs containing it.
-- The bundle operands for an unknown operand bundle escape in unknown
- ways before control is transferred to the callee or invokee.
-- Calls and invokes with operand bundles have unknown read / write
- effect on the heap on entry and exit (even if the call target is
- ``readnone`` or ``readonly``).
-- An operand bundle at a call site cannot change the implementation
- of the called function. Inter-procedural optimizations work as
- usual as long as they take into account the first two properties.
- The bundle operands for an unknown operand bundle escape in unknown
ways before control is transferred to the callee or invokee.
- Calls and invokes with operand bundles have unknown read / write