2018-11-07  Jozef Lawrynowicz  <jozef.l@mittosystems.com>

	PR c/87691
	
	gcc/ChangeLog:
	* stor-layout.c (compute_record_mode): Set TYPE_MODE of UNION_TYPE
	to the mode of the widest field iff the widest field has mode class
	MODE_INT, or MODE_PARTIAL_INT and the union would be passed by
	reference.

	gcc/testsuite/ChangeLog:
	* gcc.target/msp430/pr87691.c: New test.

From-SVN: r265894