https://llvm.org/bugs/show_bug.cgi?id=28348
James Molloy <james.mol...@arm.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #10 from James Molloy <james.mol...@arm.com> ---
Hi Nico,
Thanks for bringing this to my attention, and sorry that I didn't act on it
quickly as I was on vacation.
The underlying problem is actually my use of DAG->getConstant. I should be
using DAG->getTargetConstant.
The use of getConstant() in this testcase actually increments the use count of
Constant<4095> from one to two. In this case, the lowering of ARMISD::BFI is
contingent on its constant argument only having one use - if it's shared, ISel
falls over.
I've committed a fixed version in r274510.
Cheers,
James
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