https://llvm.org/bugs/show_bug.cgi?id=24065
Pedro Ferreira <pedro.ferre...@imgtec.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |INVALID
--- Comment #3 from Pedro Ferreira <pedro.ferre...@imgtec.com> ---
(In reply to comment #2)
> Nicolas, I think that this is actually intended behavior. The map should
> only be used once per cloning of a given basic block, so the find() should
> actually always return VMap.end(). When it doesn't it means that you passed
> in an already used VMap, which cloned this basic block already. Even if you
> were reusing VMap, the code as committed would retain the proper mapping of
> existing instructions in a basic block to the newly cloned equivalents
> (rather than referring to a prior cloning of the block).
I'm confused. By code inspection, the VMap is per function cloning, not per
block.
In any case, thank you for your reply. I just think this peculiarity should be
documented (unless I missed it), as I was expecting to be able to arbitrarily
replace instructions of the cloned function though the VMap.
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