[llvm-bugs] [Bug 27657] [IfConverter/BranchFolding] An empty, non-reachable MBB is not removed.

[via llvm-bugs]

https://llvm.org/bugs/show_bug.cgi?id=27657

Jonas Paulsson <paulsson at linux.vnet.ibm.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |INVALID

--- Comment #1 from Jonas Paulsson <paulsson at linux.vnet.ibm.com> ---
Tried to fix this, but it turns out that empty blocks with either no
predecessors or successors are the only empty blocks left, which seems to be
difficult / unnecessary to get rid of. For the first block in function,
removing it triggers an assert that a loop header should not be first block in
function. As to empty blocks without successors, I am not sure if there could
still be a jump to such a block but it however seems harmless.

So, I close this bug without any changes, sorry for spamming.

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