re PR rtl-optimization/92796 (ICE in lra_assign, at lra-assigns.c:1646 on powerpc64le...

re PR rtl-optimization/92796 (ICE in lra_assign, at lra-assigns.c:1646 on powerpc64le-linux-gnu)

2019-12-10  Vladimir Makarov  <vmakarov@redhat.com>

	PR rtl-optimization/92796
	* lra-int.h (lra_risky_transformations_p): Rename to
	check_and_force_assignment_correctness_p.
	* lra-assigns.c: Ditto.
	(lra_assign): Reset check_and_force_assignment_correctness_p.
	* lra-constraints.c (lra_risky_transformations_p): Rename to
	check_and_force_assignment_correctness_p.
	(lra_constraints): Set up check_and_force_assignment_correctness_p
	only for the 1st sub-pass.
	* lra-eliminations.c (process_insn_for_elimination): Set up
	check_and_force_assignment_correctness_p if the insn chnaged its
	code.

2019-12-10  Vladimir Makarov  <vmakarov@redhat.com>

	PR rtl-optimization/92796
	* gcc.target/powerpc/pr92796.c: New test.

From-SVN: r279204