backport: re PR target/79733 (ICE in int_mode_for_mode, at stor-layout.c:406)

backport: re PR target/79733 (ICE in int_mode_for_mode, at stor-layout.c:406)

	Backport from mainline
	2017-04-06  Uros Bizjak  <ubizjak@gmail.com>

	PR target/79733
	* config/i386/i386.c (ix86_expand_builtin)
	<case IX86_BUILTIN_KORTEST{C,Z}16>: Determine insn operand
	mode from insn data. Convert operands to insn operand mode.
	Copy operands that don't satisfy insn predicate to a register.

testsuite/ChangeLog:

	Backport from mainline
	2017-04-06  Uros Bizjak  <ubizjak@gmail.com>

	PR target/79733
	* gcc.target/i386/pr79733.c: New test.

From-SVN: r246752