re PR rtl-optimization/87305 (Segfault in end_hard_regno in setup_live_pseudos_and_spill_after_risky_transforms on aarch64 big-endian)

2019-01-10  Vladimir Makarov  <vmakarov@redhat.com>

	PR rtl-optimization/87305
	* lra-assigns.c
	(setup_live_pseudos_and_spill_after_risky_transforms): Check
	allocation for big endian pseudos used as paradoxical subregs and
	spill them if it is wrong.
	* lra-constraints.c (lra_constraints): Add a comment.

2019-01-10  Vladimir Makarov  <vmakarov@redhat.com>

	PR rtl-optimization/87305
	* gcc.target/aarch64/pr87305.c: New.

From-SVN: r267823