Use poison instead of undef for SCEVUnkown of unreachable values.
This should be in line with the movement to replace undef with poison
when possible.
Suggested in D114650.
Differential D128586
[SCEV] Use SCEVUnknown(poison) instead of SCEVUnknown(undef). fhahn on Jun 25 2022, 8:42 AM. Authored by
Details Use poison instead of undef for SCEVUnkown of unreachable values. Suggested in D114650.
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