CodeGen: Remove dead code in TailDuplicate
I noticed that this isn't covered by our existing tests and spent some
time trying to come up with an example it actually hits. I tried hand
rolling something based on the explanation in the comment, but couldn't
get anything that didn't abort tail duplication earlier for one reason
or another.
Then, I tried cranking tail-dup-size cranked up so this would fire
more and ran a bootstrap of clang and the nightly test suite - those
don't hit this either.
This reverts r132816 and replaces it with an assert.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@265347 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed