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

..

basic.ll

…

negative.ll

Handle loop with negtive induction variable increment

2015-07-24 22:01:49 +00:00

nonconst_lb.ll

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reduction.ll

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