target-i386: add helper functions to get other flags
Introduce new functions to extract PF, SF, OF, ZF in addition to CF. These provide single entry points for optimizing accesses to a single flag. Reviewed-by: NBlue Swirl <blauwirbel@gmail.com> Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com> Signed-off-by: NRichard Henderson <rth@twiddle.net>
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