GitHub user zuyu opened a pull request:
https://github.com/apache/incubator-quickstep/pull/252
Simplified ExtractCommonSubexpression rule as a BottomUp rule.
This small PR simplified PR #237 by deriving from a `BottomUpRule`.
Assigned to @jianqiao.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/zuyu/incubator-quickstep
refactor-common-subexpr-rule
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/incubator-quickstep/pull/252.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #252
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commit 7c7d0195ee9644b7655ae9f2faf129acc58accb1
Author: Zuyu Zhang <zu...@apache.org>
Date: 2017-05-21T21:49:08Z
Simplified ExtractCommonSubexpression rule as a BottomUp rule.
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