Revert "another llvm workaround for getelementptr"

This reverts commit c2f5634fb3df51622cf74f23b4ae0d4a7d2bbbe9.

It doesn't work. With this, LLVM moves the allocate fn call
to after llvm.coro.begin
6e2a67724cAndrew Kelley committed on 2/27/2018, 7:58:02 PMparentc2f5634
3 files changedLine totals unavailable