gcc/
	PR rtl-optimization/77289
	* lra-constraints.c (get_final_hard_regno): Add support for non hard
	register numbers.  Remove support for subregs.
	(get_hard_regno): Use SUBREG_P.  Don't call get_final_hard_regno().
	(get_reg_class): Delete removed get_final_hard_regno() argument.
	(uses_hard_regs_p): Call get_final_hard_regno().

gcc/testsuite/
	PR rtl-optimization/77289
	* gcc.target/powerpc/pr77289.c: New test.

From-SVN: r240065