LRA: Refine reload pseudo class

For given testcase a reload pseudo happened to occur only in reload
insns created on one constraint sub-pass.  Therefore its initial class
(ALL_REGS) was not refined and the reload insns were not processed on
the next constraint sub-passes.  This resulted into the wrong insn.

        PR rtl-optimization/110372

gcc/ChangeLog:

	* lra-assigns.cc (assign_by_spills): Add reload insns involving
	reload pseudos with non-refined class to be processed on the next
	sub-pass.
	* lra-constraints.cc (enough_allocatable_hard_regs_p): New func.
	(in_class_p): Use it.
	(print_curr_insn_alt): New func.
	(process_alt_operands): Use it.  Improve debug info.
	(curr_insn_transform): Use print_curr_insn_alt.  Refine reload
	pseudo class if it is not refined yet.

gcc/testsuite/ChangeLog:

	* gcc.target/i386/pr110372.c: New.

0 files changed, 0 insertions, 0 deletions