Nikita Popov 766cf7f32e [InstSimplify] Fold division by zero to poison ...

Div/rem by zero is immediate undefined behavior and anything goes.
Currently we fold it to undef, this patch changes it to fold to
poison instead, which is slightly stronger.

Differential Revision: https://reviews.llvm.org/D93995

2021-01-03 20:52:45 +01:00

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