• Andreas Haas's avatar
    Reland "[wasm] Support partial serialization of modules" · cace2f53
    Andreas Haas authored
    The original CL was flaky because deserialization did not wait correctly
    for the compilation of missing functions to finish. The baseline-finished
    event was set even when there were still some functions missing. The
    combination of deserialization and lazy compilation was also not handled
    correctly.
    
    Original change's description:
    > [wasm] Support partial serialization of modules
    >
    > At the moment a WebAssembly module can be serialized successfully when
    > all functions were compiled with TurboFan. However, for some functions
    > it may not be necessary to be compiled with TurboFan, e.g. for functions
    > where Liftoff code is as good as TurboFan code.
    >
    > With this CL we allow WebAssembly modules to get serialized even when
    > not all functions are compiled with TurboFan. Missing functions are
    > marked as missing in the serlialization. Upon deserialization, missing
    > functions either get compiled by Liftoff, or initialized with a
    > lazy-compilation stub, depending on the V8 configuration.
    >
    > Bug: v8:11862
    
    Change-Id: I79a9e8e14199cff87fce6ae41a87087e047bbc65
    Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3060485Reviewed-by: 's avatarClemens Backes <clemensb@chromium.org>
    Commit-Queue: Andreas Haas <ahaas@chromium.org>
    Cr-Commit-Position: refs/heads/master@{#76017}
    cace2f53
test-partial-serialization.js 1.56 KB