* combine.c (if_then_else_cond): Simplify the comparison of
	rtx against -1, 0, and 1.
	* loop.c (check_dbra_loop): Likewise.
	* optabs.c (emit_conditional_move): Likewise.
	(emit_conditional_add): Likewise.
	* config/i386/i386.md (*movsi_or): Likewise.
	(*movdi_or_rex6): Likewise.

From-SVN: r69658