| Index: src/flag-definitions.h
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| diff --git a/src/flag-definitions.h b/src/flag-definitions.h
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| index 8ac061312728b7ea7a79d345d249eef047acebde..6bc5c10f76c2c32a151fc6c451b227e481e9ba2d 100644
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| --- a/src/flag-definitions.h
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| +++ b/src/flag-definitions.h
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| @@ -230,7 +230,7 @@ DEFINE_bool(unreachable_code_elimination, false,
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|              "eliminate unreachable code (hidden behind soft deopts)")
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|  DEFINE_bool(track_allocation_sites, true,
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|              "Use allocation site info to reduce transitions")
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| -DEFINE_bool(optimize_constructed_arrays, false,
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| +DEFINE_bool(optimize_constructed_arrays, true,
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|              "Use allocation site info on constructed arrays")
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|  DEFINE_bool(trace_osr, false, "trace on-stack replacement")
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|  DEFINE_int(stress_runs, 0, "number of stress runs")
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| 
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