------- Comment #4 from dann at godzilla dot ics dot uci dot edu 2006-12-07 18:24 ------- (In reply to comment #3) > unswitching would duplicate the whole loop here, so not exactly I think. But > if-conversion to > > j = COND_EXPR <p, 1, 2> > > or > > j = 2 - (int)p; > > would make j loop invariant.
if-conversion would solve this particular testcase, but the more general case of moving invariant control structures out of the loop is probably more interesting. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30104
