| The compilation trace lists functions that will be compiled in the core |
| snapshot. It is derived by unioning the output of Dart_SaveCompilationTrace |
| after startup from a few apps. |
| |
| To update this trace. |
| - Replace the existing trace with an empty file. |
| - In //topaz/runtime/flutter_runner/engine.cc, change kCompilationTraceDelayInSeconds to a non-zero value. |
| - In //topaz/runtime/flutter_runner/meta/flutter_jit_runner.cmx, add "persistent-storage" to "features" section. |
| - Build; run a few apps, collecting compilation trace from each app. |
| - Look for "Dart compilation trace" in 'fx log' to make sure the trace is written. |
| - Copy the compilation trace to the host: "fx cp --to-host /data/dart_compilation_trace.txt trace" |
| - Process the trace(s) with merge_traces.dart to filter for whitelisted packages and sort. |
