target-ppc: Clean Up mullw
Eliminate the unecessary ext32s TCG operation and make the multiplication operation explicitly 32 bit. Signed-off-by: NTom Musta <tommusta@gmail.com> Suggested-by: NRichard Henderson <rth@twiddle.net> Reviewed-by: NRichard Henderson <rth@twiddle.net> Signed-off-by: NAlexander Graf <agraf@suse.de>
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