Benjamin Kramer d955ca4937 [BufferDeallocation] Don't assume successor operands are unique ...

This would create a double free when a memref is passed twice to the
same op. This wasn't a problem at the time the pass was written but is
common since the introduction of scf.while.

There's a latent non-determinism that's triggered by the test, but this
change is messy enough as-is so I'll leave that for later.

Differential Revision: https://reviews.llvm.org/D120044

2022-02-17 14:16:32 +01:00

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