Revision e3606cc5d92ccb41ed39480bf00bddf4a9e710c2 authored by Andrew Adams on 13 August 2020, 17:37:30 UTC, committed by Andrew Adams on 13 August 2020, 18:41:13 UTC
Partition loops shouldn't mess with serial loops containing thread barriers, potentially causing warp divergence and deadlock (seen in some obscure lens blur schedules). Also we were generating too many thread barriers in a branch where the base mutator class was accidentally always mutating something, so there's a change to FuseGPUThreadLoops to make it more bug-resistant. Without these additional barriers I have been unable to come up with a case where a barrier ends up somewhere that would deadlock, so no test.
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