vsavchenko added a comment.
I had another thought, `merge` is usually called in situations when we found
out that two symbols should be marked equal (and checked that it's possible to
begin with), which is not true in your case.
If we update my case from before, we can get: `a + b == c` and `a != c` as
given, and `b == 0` as a new constraint. In this situation, you will merge
classes `{a + b, c}` and `{a}`, which contradicts our existing equality
information.
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D103314/new/
https://reviews.llvm.org/D103314
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