gcc/jit/ChangeLog:
	PR jit/66779
	* dummy-frontend.c (jit_langhook_type_for_mode): Ensure that we
	handle modes QI, HI, SI, DI, TI.

gcc/testsuite/ChangeLog:
	PR jit/66779
	* jit.dg/all-non-failing-tests.h: Add test-pr66779.c.
	* jit.dg/test-pr66779.c: New testcase.

From-SVN: r225522