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Re: subreg against register allocation?


Jeff Law <law@redhat.com> writes:

> Note that lower-subreg is rather conservative when determining what
> subregs to lower, particularly when the pseudo appears in different
> modes (ie, some accesses are via SUBREGs, others are naked REGs).  So
> this approach may not necessarily work.

Right; it only works if all uses of the subreg can be split.

Ian


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