• Nico Hartmann's avatar
    Revert "[osr] Use the new OSR cache" · c34b7b41
    Nico Hartmann authored
    This reverts commit 91da3883.
    
    Reason for revert: https://ci.chromium.org/ui/p/v8/builders/ci/V8%20Linux64%20-%20arm64%20-%20sim%20-%20pointer%20compression%20-%20builder/21150/overview
    
    Original change's description:
    > [osr] Use the new OSR cache
    >
    > This CL switches over our OSR system to be based on the feedback
    > vector osr caches.
    >
    > - OSRing to Sparkplug is fully separated from OSR urgency. If
    >   SP code exists, we simply jump to it, no need to maintain an
    >   installation request.
    > - Each JumpLoop checks its dedicated FeedbackVector cache slot.
    >   If a valid target code object exists, we enter it *without*
    >   calling into runtime to fetch the code object.
    > - Finally, OSR urgency still remains as the heuristic for
    >   requesting Turbofan OSR compile jobs. Note it no longer has a
    >   double purpose of being a generic untargeted installation
    >   request.
    >
    > With the new system in place, we can remove now-unnecessary
    > hacks:
    >
    > - Early OSR tierup is replaced by the standard OSR system. Any
    >   present OSR code is automatically entered.
    > - The synchronous OSR compilation fallback is removed. With
    >   precise installation (= per-JumpLoop-bytecode) we no longer
    >   have the problem of 'getting unlucky' with JumpLoop/cache entry
    >   mismatches. Execution has moved on while compiling? Simply spawn
    >   a new concurrent compile job.
    > - Remove the synchronous (non-OSR) Turbofan compile request now
    >   that we always enter available OSR code as early as possible.
    > - Tiering into Sparkplug no longer messes with OSR state.
    >
    > Bug: v8:12161
    > Change-Id: I0a85e53d363504b7dac174dbaf69c03c35e66700
    > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3596167
    > Commit-Queue: Jakob Linke <jgruber@chromium.org>
    > Auto-Submit: Jakob Linke <jgruber@chromium.org>
    > Reviewed-by: Leszek Swirski <leszeks@chromium.org>
    > Commit-Queue: Leszek Swirski <leszeks@chromium.org>
    > Cr-Commit-Position: refs/heads/main@{#80147}
    
    Bug: v8:12161
    Change-Id: I4a6955f4f20b6f3b13e98d5600c7c6a5205915bc
    No-Presubmit: true
    No-Tree-Checks: true
    No-Try: true
    Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3605608
    Auto-Submit: Nico Hartmann <nicohartmann@chromium.org>
    Owners-Override: Nico Hartmann <nicohartmann@chromium.org>
    Reviewed-by: 's avatarNico Hartmann <nicohartmann@chromium.org>
    Commit-Queue: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
    Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
    Cr-Commit-Position: refs/heads/main@{#80148}
    c34b7b41
Name
Last commit
Last update
..
DIR_METADATA Loading commit data...
OWNERS Loading commit data...
runtime-array.cc Loading commit data...
runtime-atomics.cc Loading commit data...
runtime-bigint.cc Loading commit data...
runtime-classes.cc Loading commit data...
runtime-collections.cc Loading commit data...
runtime-compiler.cc Loading commit data...
runtime-date.cc Loading commit data...
runtime-debug.cc Loading commit data...
runtime-forin.cc Loading commit data...
runtime-function.cc Loading commit data...
runtime-futex.cc Loading commit data...
runtime-generator.cc Loading commit data...
runtime-internal.cc Loading commit data...
runtime-intl.cc Loading commit data...
runtime-literals.cc Loading commit data...
runtime-module.cc Loading commit data...
runtime-numbers.cc Loading commit data...
runtime-object.cc Loading commit data...
runtime-operators.cc Loading commit data...
runtime-promise.cc Loading commit data...
runtime-proxy.cc Loading commit data...
runtime-regexp.cc Loading commit data...
runtime-scopes.cc Loading commit data...
runtime-shadow-realm.cc Loading commit data...
runtime-strings.cc Loading commit data...
runtime-symbol.cc Loading commit data...
runtime-temporal.cc Loading commit data...
runtime-test-wasm.cc Loading commit data...
runtime-test.cc Loading commit data...
runtime-trace.cc Loading commit data...
runtime-typedarray.cc Loading commit data...
runtime-utils.h Loading commit data...
runtime-wasm.cc Loading commit data...
runtime-weak-refs.cc Loading commit data...
runtime.cc Loading commit data...
runtime.h Loading commit data...