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Support multi-pass profiling in OpenXLA FunctionalHloRunner. - #3647
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Add SimpleMultiPassTracer test tracer (simple_multipass_tracer_for_test.{h,cc})
and extract profiler classes (XSpaceProfilerInterface, HLORunnerProfiler, and
multi-pass runners) into hlo_runner_profiler.{h,cc} with AllReduceOr collective
synchronization.
PiperOrigin-RevId: 1001085342
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Support multi-pass profiling in OpenXLA FunctionalHloRunner.
Add SimpleMultiPassTracer test tracer (simple_multipass_tracer_for_test.{h,cc})
and extract profiler classes (XSpaceProfilerInterface, HLORunnerProfiler, and
multi-pass runners) into hlo_runner_profiler.{h,cc} with AllReduceOr collective
synchronization.