aqjune 5f3c99085d [ValueTracking] Dereferenced pointers are noundef
This is a follow-up of D95238's LangRef update.
This patch updates `programUndefinedIfUndefOrPoison(V)` to return true if
`V` is used by any memory-accessing instruction.
Interestingly, this affected many tests in Attributors, mainly about adding noundefs.
The tests are updated using llvm/utils/update_test_checks.py. I checked that the diffs
are about updating noundefs.

Reviewed By: nikic

Differential Revision: https://reviews.llvm.org/D96642
2021-02-14 22:50:48 +09:00
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