On Mon, Aug 14, 2006 at 08:37:41AM +0200, Paolo Bonzini wrote:
> But isn't reg 32 dead, because it is only set by insn 98:
>
> (insn 98 96 101 9 (set (reg/v:HI 32 [ size ])
> (reg:HI 43)) 33 {movhi} (insn_list:REG_DEP_TRUE 96 (nil))
> (nil))
>
> after copyprop?No, because insn 96, which reads reg 32, might be executed the next time through the loop. -- Rask Ingemann Lambertsen
