Manman Ren d33f4efbfd SimplifyCFG: fold unconditional branch to its predecessor if profitable. ...

This patch extends FoldBranchToCommonDest to fold unconditional branches.
For unconditional branches, we fold them if it is easy to update the phi nodes 
in the common successors.

rdar://10554090

llvm-svn: 158392

2012-06-13 05:43:29 +00:00

121 KiB

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