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Author SHA1 Message Date
Nikita Popov 652cd7c100 [InstCombine] Fix user iterator invalidation in bitcast of phi transform 
This fixes the issue encountered in D71164. Instead of using a
range-based for, manually iterate over the users and advance the
iterator beforehand, so we do not skip any users due to iterator
invalidation.

Differential Revision: https://reviews.llvm.org/D72657
 2020-01-14 20:38:10 +01:00
Nikita Popov fa63234093 [InstCombine] Add test for iterator invalidation bug; NFC 2020-01-14 20:38:10 +01:00