re PR rtl-optimization/66626 (gcc.dg/torture/stackalign/non-local-goto-5.c segfaults w/ -mregparm=3 or -miamcu)

2015-07-16  Vladimir Makarov  <vmakarov@redhat.com>

	PR rtl-optimization/66626
	* ira.h (emit-rtl.h): Include.
	(non_spilled_static_chain_regno_p): New.
	* ira-color.c (setup_profitable_hard_regs): Clear profitable regs
	unless it is non spilled static chain pseudo.
	(assign_hard_rego): Spill memory profitable allocno unless it is
	non spilled static chain pseudo.
	(allocno_spill_priority_compare): Put non spilled static chain
	pseudo at the end of sorted array.
	(improve_allocation): Do nothing if we have static chain and
	non-local goto.
	(allocno__priority_compare_func): Put non spilled static chain
	pseudo at the beginning of sorted array.
	(move_spill_restore): Ignore non spilled static chain pseudo.
	* ira-costs.c (find_costs_and_classes): Don't assign class NO_REGS
	to non spilled static chain pseudo.
	* lra-assigns.c (pseudo_compare_func): Put non spilled static chain
	pseudo at the beginning of sorted array.
	(spill_for): Spill non spilled static chain pseudo last.
	* lra-constraints.c (lra_constraints): Remove static chain pseudo
	check for equivalence.

2015-07-16  Vladimir Makarov  <vmakarov@redhat.com>

	PR rtl-optimization/66626
	* gcc.target/i386/pr66626-2.c: New.

From-SVN: r225891