On Thu, 2011-06-16 at 09:49 -0700, Richard Henderson wrote: > On 06/16/2011 04:35 AM, Richard Guenther wrote: > > > > + /* Bit-field insertion needs several shift and mask operations. */ > > + case BIT_FIELD_EXPR: > > + return 3; > > ... depending on the target, of course. >
Agreed -- this is a single-instruction operation on PowerPC. Probably need some target-specific weights here. > > > r~
