315311 2026-05-21 12:09:30 -0700 Reduce cost of framework-headers rule invocations 2026-05-23 05:44:25 -0700 1 1 1 Unclassified WebKit New Bugs WebKit Nightly Build Unspecified Unspecified REOPENED InRadar P2 Normal --- 315422 1 bfulgham bfulgham webkit-bug-importer oldest_to_newest 2213041 0 bfulgham 2026-05-21 12:09:30 -0700 The script `postprocess-framework-headers-definitions` is sourced on every invocation. That's (currently) 107 lines of bash that runs Perl + JSON parsing per invocation to compute TBA versions from branch_config.json. While this is effectively a no-op for OpenSource builds, this is a non-zero cost for work that repeats unchanged 3,337 times across the build. This accounts for about 8.5s of wall clock build time, and was made worse by my patch that enabled script sandboxes. We can avoid this work by computing this constant (per-build) value once and reusing it for subsequent files in the build phase. We do this for each project, so that we do not break the non-Engineer build that needs to be able to build projects independently. 2213042 1 webkit-bug-importer 2026-05-21 12:09:36 -0700 <rdar://problem/177643527> 2213044 2 bfulgham 2026-05-21 12:15:16 -0700 This makes up for the ~8-10s cost of Bug 313032. 2213175 3 bfulgham 2026-05-21 21:46:29 -0700 Pull request: https://github.com/WebKit/WebKit/pull/65458 2213398 4 ews-feeder 2026-05-22 16:37:17 -0700 Committed 313764@main (8671f597bd6c): <https://commits.webkit.org/313764@main> Reviewed commits have been landed. Closing PR #65458 and removing active labels. 2213514 5 jbedard 2026-05-23 05:44:25 -0700 Reopened Bugzilla. REGRESSION(313764@main): 'WKJSSerializedNode' is unavailable: not available on tvOS, tracking revert in https://bugs.webkit.org/show_bug.cgi?id=315422.