steven_wu added a comment.

In D125847#3528111 <https://reviews.llvm.org/D125847#3528111>, @aeubanks wrote:

> I'm still looking into a whole program devirtualization bug that only repros 
> with opaque pointers, and there are still potential performance issues to 
> look into

Thanks. Maybe here is another way to look at this problem, instead of giving 
people a temporary switch to use opaque_pointer if their first bitcode is 
no_opaque_pointer, we opt as aggressive as possible into opaque_pointer and 
give people a temporary switch to go back to old behavior just like how clang 
is configured.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D125847/new/

https://reviews.llvm.org/D125847

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