[PR114942][LRA]: Don't reuse input reload reg of inout early clobber operand

[PR114942][LRA]: Don't reuse input reload reg of inout early clobber operand

  The insn in question has the same reg in inout operand and input
operand.  The inout operand is early clobber.  LRA reused input reload
reg of the inout operand for the input operand which is wrong.  It
were a good decision if the inout operand was not early clobber one.
The patch rejects the reuse for the PR test case.

gcc/ChangeLog:

	PR target/114942
	* lra-constraints.cc (struct input_reload): Add new member early_clobber_p.
	(get_reload_reg): Add new arg early_clobber_p, don't reuse input
	reload with true early_clobber_p member value, use the arg for new
	element of curr_insn_input_reloads.
	(match_reload): Assign false to early_clobber_p member.
	(process_addr_reg, simplify_operand_subreg, curr_insn_transform):
	Adjust get_reload_reg calls.

gcc/testsuite/ChangeLog:

	PR target/114942
	* gcc.target/i386/pr114942.c: New.