| commit | f2aaa9fd5c7e05abd93fff7a71712bc19bd36eb2 | [log] [tgz] |
|---|---|---|
| author | Clemens Backes <clemensb@chromium.org> | Mon Jul 15 16:44:56 2024 |
| committer | V8 LUCI CQ <v8-scoped@luci-project-accounts.iam.gserviceaccount.com> | Tue Jul 16 10:18:27 2024 |
| tree | ca03299ffb672d9d3dfb56544e9ad3a62111f570 | |
| parent | b5fcb5eb179c71a68ae27c9bb67d55cc1fb1b88e [diff] |
[wasm] Embed canonical signature id as constant The canonical signature ID is needed for the type check on indirect calls. Even though it is a constant, we currently load it from the WasmTrustedInstanceData in order to make code cachable (because in another process we might have different canonicalized type IDs). This CL embeds the constant as a constant in the code, with relocation information to replace it by a module-local ID on serialization and replace back by a canonicalized ID on deserialization. This speeds up indirect calls by ~10% and frees up a field in the WasmTrustedInstanceData. R=dlehmann@chromium.org CC=jkummerow@chromium.org Bug: 42204513 Change-Id: Ie61fa7e849311566098102f54aed18a47f98846b Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/5676329 Reviewed-by: Daniel Lehmann <dlehmann@chromium.org> Commit-Queue: Clemens Backes <clemensb@chromium.org> Reviewed-by: Matthias Liedtke <mliedtke@chromium.org> Cr-Commit-Position: refs/heads/main@{#95051}
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