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Author SHA1 Message Date
Eric Christopher cee313d288 Revert "Temporarily Revert "Add basic loop fusion pass."" 
The reversion apparently deleted the test/Transforms directory.

Will be re-reverting again.

llvm-svn: 358552
 2019-04-17 04:52:47 +00:00
Eric Christopher a863435128 Temporarily Revert "Add basic loop fusion pass." 
As it's causing some bot failures (and per request from kbarton).

This reverts commit r358543/ab70da07286e618016e78247e4a24fcb84077fda.

llvm-svn: 358546
 2019-04-17 02:12:23 +00:00
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