commit | 36caf54631a5c6ced8425ab332577a00dc5de076 | [log] [tgz] |
---|---|---|
author | Vyacheslav Egorov <vegorov@google.com> | Wed Oct 13 11:35:26 2021 +0000 |
committer | commit-bot@chromium.org <commit-bot@chromium.org> | Wed Oct 13 11:35:26 2021 +0000 |
tree | ee4d07c0fa22abf446a1b45955e9bc801dce8d10 | |
parent | 56490f9776e93b6bb42e95b92bfef3b22e8d0b77 [diff] |
[vm/aot] Allow dropping dyn:-forwarder targets Currently there is a strong link between dyn:-forwarder and its target (through Function::data_ field). This link causes us to retain some Function objects even if they are otherwise considered dropped. In reality this link is only ever used during compilation or when accessing script information for the dyn:-forwarder. As such when generating snapshots in DWARF stack traces mode we should be able to consider this connection weak and allow dropped Function objects to be truly discarded from the snapshot. This change puts WSR in between dyn:-forwarder and its target when we know that target is not going to be retained. We also clean how forwarding target represented to avoid unnecessary indirection through a one-element array. TEST=ci Cq-Include-Trybots: luci.dart.try:vm-kernel-precomp-dwarf-linux-product-x64-try,vm-kernel-precomp-linux-debug-x64-try,vm-kernel-precomp-linux-release-x64-try Change-Id: I4f0ec822ff15f78c72ff55a87d9dc52abd466cb3 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/216040 Commit-Queue: Slava Egorov <vegorov@google.com> Reviewed-by: Alexander Markov <alexmarkov@google.com>
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