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(can_combine_p): Don't reject SUBREG assignments here. · 42301240(subst): Instead, do it here, but also allow it in as a nested SUBREG since the inner one will be eliminated. (simplify_and_const_int): Convert (and (neg X) (const_int 1)) to a shift when X is known to be either 0 or 1. From-SVN: r5187
Richard Kenner committed
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