tree 692eb754d2cf5fdb81809529f02a50f2e4747a62
parent b2b55596e605bef315b615cb89e4515f360548f2
author Nicolas Geoffray <ngeoffray@google.com> 1462887334 +0100
committer Nicolas Geoffray <ngeoffray@google.com> 1463039892 +0100

Fix another case of live_in at irreducible loop entry.

GVN was implicitly extending the liveness of an instruction across
an irreducible loop.

Fix this problem by clearing the value set at loop entries that contain
an irreducible loop.

bug:28252896

(cherry picked from commit 77ce6430af2709432b22344ed656edd8ec80581b)

Change-Id: Ie0121e83b2dfe47bcd184b90a69c0194d13fce54