ce8a8b29b6
Loop information may be outdated by the time code is generated (for example, if flow graph is serialized/deserialized). Recalculate loop information during code generation if it is needed in order to align loop headers. TEST=vm/dart/align_loops_verify_alignment_test Change-Id: I1edd63354cee9940bbd474dc95535b4b74081830 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/401863 Commit-Queue: Alexander Markov <alexmarkov@google.com> Reviewed-by: Slava Egorov <vegorov@google.com>