Chandler Carruth 5e3bfde3f4 [SDAG] Let the DAG combiner take care of dead nodes rather than manually
deleting them. This already seems to work, as no tests fail without
this.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@214601 91177308-0d34-0410-b5e6-96231b3b80d8
2014-08-02 00:19:10 +00:00
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