Stanislav Mekhanoshin 987bf8b6c1 Let targets adjust operand latency of bundles ...

This reverts the AMDGPU DAG mutation implemented in D72487 and gives
a more general way of adjusting BUNDLE operand latency.

It also replaces FixBundleLatencyMutation with adjustSchedDependency
callback in the AMDGPU, fixing not only successor latencies but
predecessors' as well.

Differential Revision: https://reviews.llvm.org/D72535

2020-01-10 14:56:53 -08:00

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