[ADT] Disable the single callback optimization on Windows.
It appears that the function pointer we use there isn't reliably 4-byte
aligned. I have no idea why or how we could correct this, so for now we
just regress the Windows performance some.
Someone with access to Windows could try working on a fix. At the very
least we could use a double indirection rather than a table, but maybe
there is some way to fully restore this optimization. I don't want to
play too much with this when I don't have access to the platform and
this at least should restore the last bots.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@336178 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed