Generate CFI for stackless methods.

Generate at least a single no-op.
Otherwise it seems like CFI is missing.

Bug: 122379755
Test: ART_HEAP_POISONING=true ART_USE_READ_BARRIER=true ./art/test.py -r -t 137 --jit --32 --target
Change-Id: Id9206cb49ce976a03e1d50e6801abcefff537f60
2 files changed