Summary:
In some specific scenarios with well understood operand bundle types
(like `"deopt"`) it may be possible to go ahead and convert recursion to
iteration, but TailRecursionElimination does not have that logic today
so avoid doing the right thing for now.
I need some input on whether `"funclet"` operand bundles should also
block tail recursion elimination. If not, I'll allow TRE across calls
with `"funclet"` operand bundles and add a test case.
Reviewers: rnk, majnemer, nlewycky, ahatanak
Subscribers: mcrosier, llvm-commits
Differential Revision: https://reviews.llvm.org/D26270
llvm-svn: 286147
Sanjoy Das