re PR target/64003 (valgrind complains about get_attr_length_nobnd in insn-attrtab...

re PR target/64003 (valgrind complains about get_attr_length_nobnd in insn-attrtab.c from i386.md)

	PR target/64003
	* config/i386/i386.h (ADJUST_INSN_LENGTH): New define.
	* config/i386/i386.md (maybe_prefix_bnd): New attribute.
	(*jcc_1, *jcc_2, jump, simple_return_internal)
	(simple_return_pop_internal): Set attribute maybe_prefix_bnd.
	Set length_nobnd attribute instead of length attribute.
	(indirect_jump, *tablejump_1): Set attribute maybe_prefix_bnd.
	(length_nobnd): Remove attribute.
	(length): Remove length_nobnd processing.

From-SVN: r226173