[LRA]: Backporting solutions for PR112918 and PR113354 to solve PR99015

[LRA]: Backporting solutions for PR112918 and PR113354 to solve PR99015

Patches for PR112918 and PR11354 depend on each other and can not be
clearly applied to gcc-13 branch.  So patches were modified and
combined.

gcc/ChangeLog:

	PR rtl-optimization/99015
	* lra-constraints.cc (enough_allocatable_hard_regs_p): Extract
	from in_class_p.
	(in_class_p): Use it with added conditions.
	(process_alt_operands): Try to change class too.
	(curr_insn_transform): Pass true to in_class_p for reg operand
	win.  Spill pseudo only used in the insn if the corresponding
	operand does not require hard register anymore.