[maglev] Add lazy deopts
Nodes can now hold a LazyDeoptSafepoint which stores the frame state in case they trigger a lazy deopt. OpProperties have a new CanLazyDeopt bit, and codegen emits a safepoint table entry + lazy deopt for all nodes with this bit. Also, we now check the deoptimized code bit on entry into the maglev compiled function. An example use of these lazy deopts is added as a PropertyCell fast path for LdaGlobal, which adds a code dependency on the property cell. Bug: v8:7700 Change-Id: I663db38dfa7325d38fc6d5f079d263a958074e36 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3557251Reviewed-by:Toon Verwaest <verwaest@chromium.org> Reviewed-by:
Jakob Linke <jgruber@chromium.org> Commit-Queue: Leszek Swirski <leszeks@chromium.org> Cr-Commit-Position: refs/heads/main@{#79688}
Showing
Please
register
or
sign in
to comment