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Re: conflicts between combine and pre global passes?
> I am sorry for misleading description. By "propagate register 172 in
> insn79 and delete insn78"
> I was meaning that gcc replaces reg 172 in insn79 with another
> register contains ZERO and
> that register(saying reg X) is defined in other basic blocks.
OK, in this case I think you need to find out why no local pass before the
problematic global pass does the obvious constant propagation into insn 79.
--
Eric Botcazou