[Webkit-unassigned] [Bug 206720] New: Break the dependency between jsc and DerivedSources

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Thu Jan 23 17:18:17 PST 2020


            Bug ID: 206720
           Summary: Break the dependency between jsc and DerivedSources
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: ASSIGNED
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: rmorisset at apple.com
                CC: tzagallo at apple.com
        Depends on: 206566

According to Tadeu, the slowdown of production builds (by more than 20%) when he landed his bytecode patch was caused by a new dependency of the jsc binary on DerivedSources/, which was needed because of DerivedSources/BytecodeStructs.h being included in CommonSlowPaths.h which is transitively included in jsc.cpp.
Now that BytecodeStructs.h is no longer included in CommonSlowPaths.cpp (see https://bugs.webkit.org/show_bug.cgi?id=206566), I'd like to see if the dependency can be safely removed, to recover this compile time regression.

Referenced Bugs:

[Bug 206566] Don't include BytecodeStructs.h in CommonSlowPaths.h
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