combine.c (record_value_for_reg): Invalidate registers if INSN is null.

combine.c (record_value_for_reg): Invalidate registers if INSN is null.

2005-01-16  Paolo Bonzini  <bonzini@gnu.org>

	* combine.c (record_value_for_reg): Invalidate registers
	if INSN is null.
	(record_dead_and_set_regs_1): Likewise, by passing them to
	record_value_for_reg.
	(record_dead_and_set_regs): Invalidate stores made by a
	call.  We do not combine across a call, but we still
	relied on equivalences.

From-SVN: r109759