All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=922521

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=2cc8803987bae798ffb4b471abd918c3fa60fde2c2be7dea0bfc45170a76da2b


Bot(s) for this bug's original alert(s):

linux-perf

system_health.common_desktop - Benchmark documentation link:
  https://bit.ly/system-health-benchmarks

📍 Pinpoint job started.
https://pinpoint-dot-chromeperf.appspot.com/job/138985f4540000

😿 Pinpoint job stopped with an error.
https://pinpoint-dot-chromeperf.appspot.com/job/138985f4540000

All of the runs failed. The most common error (20/20 runs) was:
ReadValueError: Could not find values matching: {'story': u'load:tools:dropbox', 'tir_label': u'load_tools', 'histogram': u'cpu_time_percentage'}

📍 Pinpoint job started.
https://pinpoint-dot-chromeperf.appspot.com/job/1680d4b8540000

📍 Found significant differences after each of 3 commits.
https://pinpoint-dot-chromeperf.appspot.com/job/1680d4b8540000

Reland "[parser] Inline byte scope data into PreparseData object" by cbruni@chromium.org
https://chromium.googlesource.com/v8/v8/+/a6f446298766c2b72cc8e61d608265408f001daa
cpu_time_percentage: 0.1051 → No values

[wasm] Add runtime call plumbing for Table operations. by titzer@chromium.org
https://chromium.googlesource.com/v8/v8/+/6d3d8f7be668570e8aa9d4636c3f53e42d622e06
cpu_time_percentage: No values → 0.1038

Revert "[heap] Remove bailout marking worklist." by ulan@chromium.org
https://chromium.googlesource.com/v8/v8/+/13e07389ff53633e613ac98fab62cc7265222425
cpu_time_percentage: 0.1038 → 0.1143 (+0.01042)

Understanding performance regressions:
  http://g.co/ChromePerformanceRegressions

Benchmark documentation link:
  https://bit.ly/system-health-benchmarks

My CL should not have any impact on performance, since it only added an execution path that is guarded by a flag (--experimental-wasm-bulk-memory).

build seemed to have failed with infra failure for my CL.