With --stress-scavenge it is possible that we don't have a memento for
the object we are interested in anymore, making the test useless.
Bug: v8:11701
Change-Id: I05984de33dc0c21d01023ebaa4ceebacfb63cc84
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2851889
Commit-Queue: Dominik Inführ <dinfuehr@chromium.org>
Auto-Submit: Patrick Thier <pthier@chromium.org>
Reviewed-by: Dominik Inführ <dinfuehr@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74218}
This CL applies the following changes:
- JSCallReducer no longer generates a CheckBigInt in front of the
generated BigIntAsUintN.
- This results in a slight change of the semantics of the latter, which
now includes the necessary type check. Typer and Verifier are changed
accordingly.
- The BigIntAsUintN operator is now effectful, since it can now deopt.
- IrOpcode::kBigIntAsUintN is now lowered in SimplifedLowering instead
of EffectControlLinearizer, the necessary type check is introduced
by the RepresentationChanger.
- Adds a small mjsunit test to check the correct deoptimization behavior
of optimized BigInt.asUintN.
==> Remove UseInfo::TruncatingWord64()!
Drive-by: Fix an issue in ChangeUnaryToPureBinaryOp when the new_input
is at index 1.
Drive-by: Introduce an %Is64Bit() intrinsic to allow tests to
distinguish 32 and 64 bit architectures.
Bug: v8:11682
Change-Id: I448f892d3bd2280d731ae5b248c833de8faf1bd5
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2843816
Commit-Queue: Nico Hartmann <nicohartmann@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74147}
Until this CL, the JSHeapBroker::GetPropertyAccessInfo (GPAI) process
was as follows:
1. GPAI is called on the main thread (MT) during the serialization
phase to create and cache PAIs.
2. GPAI is called again from the background thread (BT); only cached
PAIs from step 1 are usable.
As part of concurrent inlining, the goal is to move GPAI fully to the
background thread. This CL takes a major step in that direction by
making GPAI itself callable from the BT without resorting solely to PAIs
that were previously cached on the MT.
There are two main reasons why GPAI previously had to run on the MT:
a) Concurrent access to Maps and other heap objects.
b) Serialization and creation of ObjectRefs for objects discovered
during GPAI.
This CL addresses only reason a) and leaves b) for future work. This
is done by keeping the two-pass approach, s.t. the initial call of
GPAI on the MT discovers and serializes objects. We then clear all
cached PAIs. The second call of GPAI on the BT thus runs full logic in a
concurrent setting.
Once all relevant objects (= maps and prototypes) no longer require
MT-serialization, reason b) is also addressed and the first pass can be
removed.
The new logic is implemented behind the runtime flag
--turbo-concurrent-get-property-access-info (default true), intended
to be removed in the future.
Bug: v8:7790
Change-Id: Idbdbfe091d7316529246a686bb6d71c2a0f06f8b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2817793
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Auto-Submit: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74120}
This CL hardens the test function for unwrapping the C++ object to
only do so if the correct API object is passed from JS.
Bug: chromium:1201057
Change-Id: I81eb16efe2711bd788c775e3bcb712720bbe4782
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2843347
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Commit-Queue: Maya Lekova <mslekova@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74102}
This CL hardens the test facility in d8 for interface types for
the fast C API.
Bug: chromium:1201011
Change-Id: Ibfe1bb242f86b4a5edd0d195e049852430f8a2fe
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2843344
Commit-Queue: Maya Lekova <mslekova@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74079}
This is a reland of 6124a534b2
It fixes a UAF issue in the d8 test by moving the test API object
constructor to PerIsolateData. It also fixes a crash in Chromium
caused by current usage of v8::ApiObject, which should be migrated
to v8::Value*.
Original change's description:
> [fastcall] Add support for leaf interface type checks
>
> This CL adds an IsTemplateForApiObject method to FunctionTemplate
> allowing the embedder to check whether a given API object was
> instantiated by this template without including parent templates
> in the search. It also replaces the v8::ApiObject in the fast API
> with a raw v8::Value pointer to allow use of standard C++ casts.
>
> Bug: chromium:1052746
> Change-Id: I0812ec8b4daaa5f5005aabf10b63e1e84e0b8f03
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2595310
> Commit-Queue: Maya Lekova <mslekova@chromium.org>
> Reviewed-by: Georg Neis <neis@chromium.org>
> Reviewed-by: Camillo Bruni <cbruni@chromium.org>
> Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#73999}
Bug: chromium:1052746, chromium:1199900
Change-Id: I4b7f0c9e9152919dde4a1d0c48fbf5ac8c5b13d8
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2835711
Reviewed-by: Georg Neis <neis@chromium.org>
Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Commit-Queue: Maya Lekova <mslekova@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74064}
This is a reland of df52b65dba
Skip test with variant stress-concurrent-allocation.
The test manually triggers pretenuring for allocation sites, but with
--stress-concurrent-allocation these pretenuring decisions are reset
due to low survival rate in old generation.
Original change's description:
> [test] Rework Allocation Site Pretenruing Tests
>
> - Add %PretenureAllocationSite to manually force pretenuring for an
> allocation site during the next GC.
> - Replace cctest test-compiler/DecideToPretenureDuringCompilation, which
> was not triggering the tested behaviour anymore with mjsunit test
> - Add tests for deoptimizations due to pretenuring decision changes
> during OSR.
>
> Bug: chromium:1193094
> Change-Id: I5d6c35e2914b705bf96f27051a4a286413b6fe26
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2825593
> Commit-Queue: Patrick Thier <pthier@chromium.org>
> Reviewed-by: Maya Lekova <mslekova@chromium.org>
> Reviewed-by: Dominik Inführ <dinfuehr@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#74032}
Bug: chromium:1193094
Change-Id: I366a4a074435ebffcf2b3af84152067731cd2a5e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2839550
Reviewed-by: Dominik Inführ <dinfuehr@chromium.org>
Reviewed-by: Maya Lekova <mslekova@chromium.org>
Commit-Queue: Patrick Thier <pthier@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74062}
This reverts commit df52b65dba.
Reason for revert: fails on TSan: https://ci.chromium.org/ui/p/v8/builders/ci/V8%20Linux64%20TSAN/36351/overview
Original change's description:
> [test] Rework Allocation Site Pretenruing Tests
>
> - Add %PretenureAllocationSite to manually force pretenuring for an
> allocation site during the next GC.
> - Replace cctest test-compiler/DecideToPretenureDuringCompilation, which
> was not triggering the tested behaviour anymore with mjsunit test
> - Add tests for deoptimizations due to pretenuring decision changes
> during OSR.
>
> Bug: chromium:1193094
> Change-Id: I5d6c35e2914b705bf96f27051a4a286413b6fe26
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2825593
> Commit-Queue: Patrick Thier <pthier@chromium.org>
> Reviewed-by: Maya Lekova <mslekova@chromium.org>
> Reviewed-by: Dominik Inführ <dinfuehr@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#74032}
Bug: chromium:1193094
Change-Id: I0cd526984d467c4e1e3637ac642f630e3cffea41
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2835715
Auto-Submit: Clemens Backes <clemensb@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/master@{#74039}
- Add %PretenureAllocationSite to manually force pretenuring for an
allocation site during the next GC.
- Replace cctest test-compiler/DecideToPretenureDuringCompilation, which
was not triggering the tested behaviour anymore with mjsunit test
- Add tests for deoptimizations due to pretenuring decision changes
during OSR.
Bug: chromium:1193094
Change-Id: I5d6c35e2914b705bf96f27051a4a286413b6fe26
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2825593
Commit-Queue: Patrick Thier <pthier@chromium.org>
Reviewed-by: Maya Lekova <mslekova@chromium.org>
Reviewed-by: Dominik Inführ <dinfuehr@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74032}
This reverts commit 6124a534b2.
Reason for revert: On suspicion of blocking V8 roll: https://ci.chromium.org/ui/p/chromium/builders/try/win10_chromium_x64_rel_ng/839568/overview
Original change's description:
> [fastcall] Add support for leaf interface type checks
>
> This CL adds an IsTemplateForApiObject method to FunctionTemplate
> allowing the embedder to check whether a given API object was
> instantiated by this template without including parent templates
> in the search. It also replaces the v8::ApiObject in the fast API
> with a raw v8::Value pointer to allow use of standard C++ casts.
>
> Bug: chromium:1052746
> Change-Id: I0812ec8b4daaa5f5005aabf10b63e1e84e0b8f03
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2595310
> Commit-Queue: Maya Lekova <mslekova@chromium.org>
> Reviewed-by: Georg Neis <neis@chromium.org>
> Reviewed-by: Camillo Bruni <cbruni@chromium.org>
> Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#73999}
Bug: chromium:1052746
Change-Id: Ic99ec616310f0f75800c3dad393b5d2d685b76ab
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2829988
Auto-Submit: Shu-yu Guo <syg@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/master@{#74016}
This CL adds an IsTemplateForApiObject method to FunctionTemplate
allowing the embedder to check whether a given API object was
instantiated by this template without including parent templates
in the search. It also replaces the v8::ApiObject in the fast API
with a raw v8::Value pointer to allow use of standard C++ casts.
Bug: chromium:1052746
Change-Id: I0812ec8b4daaa5f5005aabf10b63e1e84e0b8f03
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2595310
Commit-Queue: Maya Lekova <mslekova@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
Cr-Commit-Position: refs/heads/master@{#73999}
Instead, bail out of inline literal creation if a deprecated map is
found. This makes it easier to compile on the background thread.
Bug: v8:7790
Change-Id: I87941938d4f13dcf49230cf246c33bf2f49897f5
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2745134
Commit-Queue: Michael Stanton <mvstanton@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#73988}
The CanAllocateArray used to be executed during JSCreateLowering,
leading to bailouts when large arrays are passed as arguments to
an async function or a bound function. This meant that
JSCreateAsyncFunctionObject or JSCreateBoundFunction will reach
JSGenericLowering, where they are not lowered. This CL moves
the checks earlier in the pipeline during JSNativeContextSpecialization
and JSCallReducer respectively, so that those operators are not
created at all in such cases and we bail out to the runtime instead.
Bug: v8:11564
Change-Id: I232ce7d9378730ae0cc8690e52fde840a484e069
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2807609
Commit-Queue: Maya Lekova <mslekova@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#73928}
We have to respect the TypeCheckKind.
Bug: chromium:1195777
Change-Id: If1eed719fef79b7c61d99c29ba869ddd7985c413
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2817791
Commit-Queue: Georg Neis <neis@chromium.org>
Reviewed-by: Nico Hartmann <nicohartmann@chromium.org>
Cr-Commit-Position: refs/heads/master@{#73909}
If a loop is removed in dead code elimination, we may have a dead node
in the control chain. This wasn't expected, and endless recursion could
result.
Bug: chromium:1196185
Change-Id: Id6d69d0eaed11b0c6158b5643d3433b11611af59
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2817792
Reviewed-by: Georg Neis <neis@chromium.org>
Commit-Queue: Michael Stanton <mvstanton@chromium.org>
Cr-Commit-Position: refs/heads/master@{#73906}
This CL makes more assumptions in the fast-api-call mjsunit test
explicit and specifies --deopt-every-n-times=0 for it, as it relies
on particular optimization/deoptimization sequences. It also fixes an
inconsistency between the fast/slow path results.
Bug: v8:11620
Change-Id: I385949a04534cd1658236878875efa6622936bc5
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2817607
Reviewed-by: Georg Neis <neis@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Commit-Queue: Maya Lekova <mslekova@chromium.org>
Cr-Commit-Position: refs/heads/master@{#73905}
This CL enables the fast-api-calls mjsunit test again on gc_stress
with a fix for --stress-flush-bytecode.
Change-Id: I3a65f8cb4ec319945319d533ed92241b14f624c7
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2817604
Commit-Queue: Maya Lekova <mslekova@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#73895}
This CL fixes the behaviour of the d8.test.fast_c_api constructor when
the global object has been modified by not allowing calls to it without
the `new` keyword.
Bug: chromium:1196597
Change-Id: I49b4a412d501f5c9adaa72b63beec1483ab4c449
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2808943
Commit-Queue: Maya Lekova <mslekova@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#73831}
This is a reland of 9eba2d85f4.
The reland fixes a global state variable which was incompatible
with the --isolate flag in d8, which runs the same script in a
different isolate.
Original change's description:
> [fastcall] Add fast API testing facilities to d8
>
> This CL provides the minimum necessary functionality to expose fast API
> for testing in mjsunit, exposing the fast path for fuzzing. It exposes
> a d8.test.fast_c_api with an `add_all` method, which exercises primitive
> types. On x64, all integer and floating point types are supported. On
> other platforms currently only 32-bit integers are included in the test.
>
> Design doc:
> https://docs.google.com/document/d/1KUKPfXkSRZTA2gMwaWbpQKlYfw0C-T6AE3XzC4viHbo/
>
> Bug: chromium:1052746
> Change-Id: Icc824199a26dd2abd2b869f5483a39d38e4dce3e
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2749154
> Reviewed-by: Camillo Bruni <cbruni@chromium.org>
> Reviewed-by: Georg Neis <neis@chromium.org>
> Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
> Commit-Queue: Maya Lekova <mslekova@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#73670}
Bug: chromium:1052746
Change-Id: I33b265b97bf7c797eee7d4cce5066999358a8c66
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2790174
Reviewed-by: Georg Neis <neis@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
Commit-Queue: Maya Lekova <mslekova@chromium.org>
Cr-Commit-Position: refs/heads/master@{#73801}
This CL is part of a series that implements Turbofan support for
property accesses satisfying the following conditions:
1. The holder is a dictionary mode object.
2. The holder is a prototype.
3. The access is a load.
This feature will only be enabled if the build flag
v8_dict_property_const_tracking is set.
This particular CL modifies existing mjsunit tests whose assumptions
don't hold if v8_dict_property_const_tracking is enabled. This is
done by adding special handling for the case that
%IsDictPropertyConstTrackingEnabled() holds.
Bug: v8:11248
Change-Id: Ia36be73e4659a988b2471f0c8151b0442f3a98f5
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2780292
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#73745}
This reverts commit 9eba2d85f4.
Reason for revert: TSAN failures https://ci.chromium.org/ui/p/v8/builders/ci/V8%20Linux64%20TSAN%20-%20isolates/14265/overview
Original change's description:
> [fastcall] Add fast API testing facilities to d8
>
> This CL provides the minimum necessary functionality to expose fast API
> for testing in mjsunit, exposing the fast path for fuzzing. It exposes
> a d8.test.fast_c_api with an `add_all` method, which exercises primitive
> types. On x64, all integer and floating point types are supported. On
> other platforms currently only 32-bit integers are included in the test.
>
> Design doc:
> https://docs.google.com/document/d/1KUKPfXkSRZTA2gMwaWbpQKlYfw0C-T6AE3XzC4viHbo/
>
> Bug: chromium:1052746
> Change-Id: Icc824199a26dd2abd2b869f5483a39d38e4dce3e
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2749154
> Reviewed-by: Camillo Bruni <cbruni@chromium.org>
> Reviewed-by: Georg Neis <neis@chromium.org>
> Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
> Commit-Queue: Maya Lekova <mslekova@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#73670}
Bug: chromium:1052746
Change-Id: Iaf5083540ddfe882a747eaa9d1d2a2a8b4ba0ec0
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2787081
Auto-Submit: Zhi An Ng <zhin@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/master@{#73673}
This CL provides the minimum necessary functionality to expose fast API
for testing in mjsunit, exposing the fast path for fuzzing. It exposes
a d8.test.fast_c_api with an `add_all` method, which exercises primitive
types. On x64, all integer and floating point types are supported. On
other platforms currently only 32-bit integers are included in the test.
Design doc:
https://docs.google.com/document/d/1KUKPfXkSRZTA2gMwaWbpQKlYfw0C-T6AE3XzC4viHbo/
Bug: chromium:1052746
Change-Id: Icc824199a26dd2abd2b869f5483a39d38e4dce3e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2749154
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
Commit-Queue: Maya Lekova <mslekova@chromium.org>
Cr-Commit-Position: refs/heads/master@{#73670}
OptimizedFrame::Summarize is used by debugger features etc
to inspect the frame of an optimized function (and the virtual frames
of functions that got inlined). It could end up materializing a JSArray
with the same backing store as one that would later get left-trimmed,
resulting in a dangling elements pointer. This CL fixes that by creating
a fresh copy of the elements store instead.
Bug: chromium:1182647
Change-Id: Iaf329464520a927b0ba33166cad2524d3752c450
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2748593
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#73330}
Currently, feedback vectors are allocated on a fixed budget of 1024.
In some cases it might be beneficial to allocate feedback vectors based
on invocation count rather than fixed budget. For example, if we have
a large function that is only run once. This cl adds an option to
use interrupt budget based on the bytecode size. It kind of mimics
invocation count. We would allocate feedback vectors early when we
have loops which is also required.
This flag is turned off by default. In followup cl, we will enable it
and if the memory / performance tradeoff is good we might make it
default.
Change-Id: I9f7231119b5fd65fb3268e665e2e315fb2625e1b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2584960
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Commit-Queue: Mythri Alle <mythria@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72371}
Now that the underlying bug is fixed, we can expect the test to always
pass.
Also simplify the test a tiny bit and skip it on debug builds because
it's slow.
Bug: chromium:1161357
Change-Id: I2ce5e064b4f707f4bd680f04df95d5a342bec1b0
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2616220
Reviewed-by: Santiago Aboy Solanes <solanes@chromium.org>
Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
Auto-Submit: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71972}
ReduceJSToNumeric() can fail to update the node type after changing
it's operator to JSToNumeric.
BUG=chromium:1158049
Change-Id: Iaabb3676f8ad9563903b81de2e7eecdcc92cbc0b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2593336
Reviewed-by: Nico Hartmann <nicohartmann@chromium.org>
Commit-Queue: Michael Stanton <mvstanton@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71771}
Adds support for generating code to migrate instances if a map
is a migration target, to dynamic check maps.
BUG=v8:10582
Change-Id: Id26d95491869fc68a5633398d230237eb88648d9
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2575058
Reviewed-by: Mythri Alle <mythria@chromium.org>
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71658}
In order to reduce the codegen size of dynamic map checks, add the
ability to have an eager with resume deopt point, which can call
a given builitin to perform a more detailed check than can be done
in codegen, and then either deoptimizes itself (as if the calling
code had performed an eager deopt) or resumes execution in the
calling code after the check.
In addition, support for adding extra arguments to a
deoptimization continuation is added to enable us to pass the
necessary arguments to the DynamicMapChecks builtin.
Finally, a trampoline is added to the DynamicMapChecks which saves
the registers that might be clobbered by that builtin, to avoid
having to save them in the generated code. This trampoline also
performs the deoptimization based on the result of the
DynamicMapChecks builtin.
In order to ensure both the trampoline and DynamicMapChecks
builtin have the same call interface, and to limit the number
of registers that need saving in the trampoline, the
DynamicMapChecks builtin is moved to be a CSA builtin with a
custom CallInterfaceDescriptor, that calls an exported Torque
macro that implements the actual functionality.
All told, this changes the codegen for a monomorphic dynamic
map check from:
movl rbx,<expected_map>
cmpl [<object>-0x1],rbx
jnz <deferred_call>
resume_point:
...
deferred_call:
<spill registers>
movl rax,<slot>
movq rbx,<object>
movq rcx,<handler>
movq r10,<DynamicMapChecks>
call r10
cmpq rax,0x0
jz <restore_regs>
cmpq rax,0x1
jz <deopt_point_1>
cmpq rax,0x2
jz <deopt_point_2>
int3l
restore_regs:
<restore_regs>
jmp <resume_point>
...
deopt_point_1:
call Deoptimization_Eager
deopt_point_2:
call Deoptimization_Bailout
To: movl rax,<slot>
movl rcx,<expected_map>
movq rdx,<handler>
cmpl [<object>-0x1],rcx
jnz <deopt_point>
resume_point:
...
deopt_point:
call DynamicMapChecksTrampoline
jmp <resume_point>
BUG=v8:10582
Change-Id: Ica4927b9acc963b9b73dc62d9379a7815335650f
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2560197
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71545}
SL's VisitSpeculativeIntegerAdditiveOp was setting Signed32 as
restriction type even when relying on a Word32 truncation in order to
skip the overflow check. This is not sound.
Bug: chromium:1150649
Change-Id: I3113a2102c62d6ecef342c98d25daf31431c01ed
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2557498
Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Reviewed-by: Nico Hartmann <nicohartmann@chromium.org>
Commit-Queue: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71364}
When accessing a super property which is a getter, the receiver
is not restricted the same way as when doing normal property access.
In particular, the receiver can be null / undefined.
Bug: v8:9237, chromium:1148758, v8:11161
Change-Id: Ic6bc2053e5d046d4b19e868312aa9b50025256a1
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2549941
Commit-Queue: Marja Hölttä <marja@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71281}
... to --turbo-dynamic-map-checks. With the upcoming use in NCI code,
this feature is no longer used exclusively by Turboprop.
Bug: v8:8888
Change-Id: I61e01db086fd2e8566d2e2a09574be74b6e5a7bd
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2546693
Commit-Queue: Mythri Alle <mythria@chromium.org>
Reviewed-by: Mythri Alle <mythria@chromium.org>
Auto-Submit: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71263}
Split globals.js into two parts, one being skipped on NCI due to
assertions about optimization status.
Change-Id: Ifc572526d9c6aed369802a65d12c4456cde65ce0
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2539909
Auto-Submit: Georg Neis <neis@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71199}
Don't deopt when a PropertyCell changes from readonly to writable.
Turbofan doesn't depend on readonly-ness unless the property is
also non-configurable, in which case such a change can't happen.
Change-Id: I3d1078a8adf1ec1b16d973dd71c4295d71003a8d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2531791
Commit-Queue: Georg Neis <neis@chromium.org>
Auto-Submit: Georg Neis <neis@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71184}
which was enabled a long ago and is not supposed to be disabled.
In addition this CL adds Representation::MightCauseMapDeprecation()
predicate and ensures it's consistent with the existing
MostGenericInPlaceChange() and CanBeInPlaceChangedTo().
Bug: v8:11104, v8:8865
Change-Id: Ia8046b76822c9b20fe3ce85de6b98570334aad21
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2527088
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71151}
In a few places we incorrectly assumed to know the instance type of the
heap object. In particular, in JSCallReducer::ReduceDataViewAccess,
doing map inference on the receiver and determining that all maps are
JSDataView maps does not guarantee that the receiver is a JSDataView
constant because we might deopt before getting to the data view
operation.
Bug: chromium:1146652
Change-Id: I1611308c3ebe0d33fa6b0cf0938d777b4e6449ff
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2524440
Auto-Submit: Georg Neis <neis@chromium.org>
Commit-Queue: Maya Lekova <mslekova@chromium.org>
Reviewed-by: Maya Lekova <mslekova@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71034}
Due to the previous change to that function, we can end up with
set (non-null) fields even when the overall serialized_ field is
unset. This can cause DCHECK failures (I don't think it's otherwise
observable).
Bug: chromium:1142240,v8:7790
Change-Id: I2711fae8a73438277caf7aa539f24d628b03153c
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2497170
Commit-Queue: Georg Neis <neis@chromium.org>
Reviewed-by: Maya Lekova <mslekova@chromium.org>
Cr-Commit-Position: refs/heads/master@{#70753}
The dynamic map check builtin loads the feedback vector from the
function's frame, therefore it doesn't work if we inline the
function. We don't do inlining on TurboProp so this is fine, but
it was possible to enable dynamic map checks on TurboFan which does.
This change prevents that, and also makes the dynamic map checks flag
specific to TurboProp and no longer an implication, which also allos
it to be switched on the command line independenly of --turboprop.
BUG=chromium:1141502,v8:9684
Change-Id: I365de461a6373335a45a7a154af7d4cf1c13dc2c
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2494928
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
Reviewed-by: Mythri Alle <mythria@chromium.org>
Cr-Commit-Position: refs/heads/master@{#70737}
The TryMigrateInstance should be passed the instance object to migrate,
not the map of the object. Also make the runtime function explicitly
check for JSObjects.
BUG=v8:9684
Change-Id: I03605d9f3103b618243c12ad0b63035484ef4134
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2487270
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
Cr-Commit-Position: refs/heads/master@{#70731}
Gracefully handle hugely nested JSBoundFunctions by checking against
the local isolate's stack limit in relevant recursive functions.
This is based on d734bb4c5d (which was
reverted).
In order to get access to the local isolate, the CL replaces the heap
broker's LocalHeap pointer with a LocalIsolate pointer.
Bug: chromium:1125145
Change-Id: I15d6265c7dfcd8a70af4ab4ce6f30149a886be00
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2480682
Commit-Queue: Georg Neis <neis@chromium.org>
Reviewed-by: Maya Lekova <mslekova@chromium.org>
Reviewed-by: Dominik Inführ <dinfuehr@chromium.org>
Reviewed-by: Santiago Aboy Solanes <solanes@chromium.org>
Cr-Commit-Position: refs/heads/master@{#70654}
Instead of loading the map from the feedback vector for monomorphic
access, this CL directly inlines the expected map constant as a static
check.
In case this static check fails, we call out to a builtin which performs
additional dynamic map checks.
There are several dynamic map checks performed by the builtin for various
cases such as:
(a) IC is monomorphic with a map that's different from the initial
static map that we checked, in which case we perform another dynamic
map check.
(b) IC is monomorphic but incoming map is a deprecated map in which case
we call out the runtime to migrate this incoming object to a new map and
then try to handle it.
(c) IC has now transitioned to polymorphic in which we use the old
dynamic polymorphic checks to validate the map and handler.
Bug: v8:10582, v8:9684
Change-Id: Id87265ed513e4aef87b8e66c826afbf10f50a1d0
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2429034
Commit-Queue: Sathya Gunasekaran <gsathya@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Mythri Alle <mythria@chromium.org>
Cr-Commit-Position: refs/heads/master@{#70304}
