target-i386: use gen_op for cmps/scas
Replace low-level ops with a higher-level "cmp %al, (A0)" in the case of scas, and "cmp T0, (A0)" in the case of cmps. Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com> Signed-off-by: NRichard Henderson <rth@twiddle.net>
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