[RELAY][FIX] Fix hang in MergeCompilerRegions (#5227)
authormbaret <55580676+mbaret@users.noreply.github.com>
Fri, 3 Apr 2020 16:33:15 +0000 (17:33 +0100)
committerGitHub <noreply@github.com>
Fri, 3 Apr 2020 16:33:15 +0000 (09:33 -0700)
commit54975a3fd24fa45b815be39075f4614e53009444
treed1203cf5563770bf27b20d5a66e03321c18a7918
parentb796c13ccc7f24eadb2c61738060fe389c3e72c9
[RELAY][FIX] Fix hang in MergeCompilerRegions (#5227)

For certain network topologies, MCR could hang.
This patch fixes that case.

Change-Id: I3edd8a8a6b452b2b838b777720adea22a3b995b4
src/relay/analysis/annotated_region_set.cc
src/relay/transforms/merge_compiler_regions.cc