[PATCH] D29121: [Docs] Add LangRef documention for freeze instruction

[Eli Friedman via Phabricator via llvm-commits]

efriedma added inline comments.


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Comment at: LangRef.rst:5408
+If "cond" is either ``undef`` or ``poison``, this instruction has
+undefined behavior.
 
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majnemer wrote:
> efriedma wrote:
> > Does "switch" need a similar amendment?
> I think indirectbr would need it too.
indirectbr already says "All possible destination blocks must be listed in the label list, otherwise this instruction has undefined behavior", which implies that "indirectbr undef" is UB.  Could be a bit more explicit, I guess.


https://reviews.llvm.org/D29121