Commit Graph

1 Commits

Author SHA1 Message Date
Lawrence Hu dc8a83b53b Handle loop with negtive induction variable increment
This patch extend LoopReroll pass to hand the loops which
is similar to the following:

      while (len > 1) {
            sum4 += buf[len];
            sum4 += buf[len-1];
            len -= 2;
        }

llvm-svn: 243171
2015-07-24 22:01:49 +00:00