[PATCH] D11852: [LowerSwitch] Fix a bug when LowerSwitch deletes the default block

[Philip Reames via llvm-commits]

reames added a comment.

The revised patch is strictly less powerful than the current code and the previous patch.  If a block occurs earlier in the iteration order than the only block which reaches it and we then delete the reaching edge, we will now fail to remove the unreachable block.  I would prefer the first patch posted over the revised one.


http://reviews.llvm.org/D11852