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Philip Reames 457e69f814 [SimplifyCFG] Fix a cost modeling oversight in branch commoning
The cost modeling was not accounting for the fact we were duplicating the instruction once per predecessor.  With a default threshold of 1, this meant we were actually creating #pred copies.

Adding to the fun, there is *absolutely no* test coverage for this.  Simply bailing for more than one predecessor passes all checked in tests.

llvm-svn: 341001
2018-08-30 00:03:02 +00:00
2014-03-02 13:08:46 +00:00
2018-08-09 22:05:19 +00:00
2016-01-26 21:29:08 +00:00
2018-06-18 12:22:17 +00:00
2018-06-08 21:21:55 +00:00

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