* Richard Biener via Gcc-patches: > Given you know the constant bit position of the possibly nonzero > bit you can elide the conversion to unsigned for all but the case > of a possibly negative input (IIRC GCC doesn't yet take advantage > of negative right shift undefinedness - but maybe sanitizers complain).
It's not undefined: “Signed '>>' acts on negative numbers by sign extension.” Thanks, Florian
