hipe_icode_call_elim could in some cases replace an #icode_call{} with
control flow with a move instruction. This would break the control flow
graph invariants and cause a crash.

This is required in some really old SPARC machines running Solaris
we still have access to.

* margnus1/hipe/maps-is_key-opts/PR-1069/OTP-13625:
  hipe: Add test suite for verifying optimisations
  Added elimination of maps:is_key/2 calls to HiPE

 * Added a suite opt_verify_SUITE.erl to HiPE that tests for the results
   of optimisations, with a single testcase that checks that the
   icode_call_elim optimisation pass does remove calls to maps:is_key/2
   where sound and not otherwise.
 * Made hipe_testsuite_driver only create explicitly listed suites.

Without this change, one test (bs_utf) times out when run on some
very slow SUN/SPARC machine we still have around.  Unfortunately,
this is the only such machine that we have access to these days.

Perhaps suprisingly, all the HiPE tests pass on SPARC, which is
nice to know that this backend still works, despite not having
been tested for more than one (almost two?) years now.

Taken from the OTP test suites and changed accordingly for HiPE.
Used to be problematic in the tests that matched against a segment
of 'bad_size'.  This was corrected in the BEAM compiler for OTP 19.