On May 13, 2007, at 4:45 PM, Reid Spencer wrote:
> +APInt APInt::rotl(uint32_t rotateAmt) const {
> + // Don't get too fancy, just use existing shift/or facilities
> + APInt hi(*this);
> + APInt lo(*this);
> + hi.shl(rotateAmt);
> + lo.lshr(BitWidth - rotateAmt);
> + return hi | lo;
> +}
> +
> +APInt APInt::rotr(uint32_t rotateAmt) const {
> + // Don't get too fancy, just use existing shift/or facilities
> + APInt hi(*this);
> + APInt lo(*this);
> + lo.lshr(rotateAmt);
> + hi.shl(BitWidth - rotateAmt);
> + return hi | lo;
> +}
Do these work for rotamt = 0 ?
-Chris
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