This removes many wasm-specific code paths from codegen, such that
includes from src/wasm can be removed. After src/wasm is fully excluded
from no-wasm builds, we can also clean up unused enum values, but for
now they are still being referenced.

R=mslekova@chromium.org

Bug: v8:11238
Change-Id: I526ac931f023a57f70b5248befa2733ad10ce9ce
Cq-Include-Trybots: luci.v8.try:v8_linux64_no_wasm_compile_rel
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2732011
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Maya Lekova <mslekova@chromium.org>
Cr-Commit-Position: refs/heads/master@{#73189}

This is a reland of fab754ff.
The lock-order inversion is fixed by putting the old code into the
surrounding WasmCodeRefScope such that it gets deleted only after
releasing the mutex.

Original change's description:
> [wasm][debug] Cache debugging code
>
> This adds a little cache for debugging code, including stepping code.
> Especially in stepping, we are currently repeatedly recompiling the same
> function, because whenever we pause (after every step) we clear
> stepping, only to reinstantiate it if the user continues stepping.
> Especially in source-level stepping this is wasteful, because stepping
> over a single line of C++ code can execute hundreds or thousands of
> steps in wasm.
>
> R=thibaudm@chromium.org
>
> Bug: chromium:1172299
> Change-Id: Id59a26cc67a5bf4a2d3cf6b1e8f14a8b1c73712c
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2732015
> Reviewed-by: Thibaud Michaud <thibaudm@chromium.org>
> Commit-Queue: Clemens Backes <clemensb@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#73162}

Bug: chromium:1172299
Cq-Include-Trybots: luci.v8.try:v8_linux64_tsan_rel_ng
Cq-Include-Trybots: luci.v8.try:v8_linux64_tsan_isolates_rel_ng
Change-Id: Ic2f92e2758e78dc4912021cd17267a4da563c0a1
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2732675Reviewed-by: Thibaud Michaud <thibaudm@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#73188}

This reverts commit a8b61ef5.

Reason for revert: Looks like it breaks GC stress bot - https://ci.chromium.org/ui/p/v8/builders/ci/V8%20Linux64%20GC%20Stress%20-%20custom%20snapshot/35880/overview

Original change's description:
> [sparkplug] Change bytecode offset mapping and introduce iterator.
>
> Previously, we recorded pairs of (bytecode offset, sparkplug pc) to
> create a mapping of bytecode offset <-> sparkplug pc.
> These pairs were only recorded after builtin/runtime calls.
> In preparation for deoptimizing to Sparkplug, we need a more precise
> mapping.
> With this CL, we record positions for every bytecode. Instead of storing
> a pair of (bytecode offset, sparkplug pc), we store only the pc,
> calculating the bytecode offset from the index in the mapping table.
> For easier use an iterator to access the mapping is introduced.
>
> Drive-by: Reduce sampling interval in cpu-profiler cctest to get rid of
> flaky failures.
>
> Bug: v8:11420, v8:11429
> Change-Id: I36a9171f43a574eb67880cbca6cf9ff7ab291e60
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2720189
> Reviewed-by: Victor Gomes <victorgomes@chromium.org>
> Reviewed-by: Camillo Bruni <cbruni@chromium.org>
> Auto-Submit: Patrick Thier <pthier@chromium.org>
> Commit-Queue: Patrick Thier <pthier@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#73186}

Bug: v8:11420
Bug: v8:11429
Change-Id: Ie71e7ce234e7b9ab9a2ec99a983e9900f35baa44
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2735397
Auto-Submit: Maya Lekova <mslekova@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@{#73187}

Previously, we recorded pairs of (bytecode offset, sparkplug pc) to
create a mapping of bytecode offset <-> sparkplug pc.
These pairs were only recorded after builtin/runtime calls.
In preparation for deoptimizing to Sparkplug, we need a more precise
mapping.
With this CL, we record positions for every bytecode. Instead of storing
a pair of (bytecode offset, sparkplug pc), we store only the pc,
calculating the bytecode offset from the index in the mapping table.
For easier use an iterator to access the mapping is introduced.

Drive-by: Reduce sampling interval in cpu-profiler cctest to get rid of
flaky failures.

Bug: v8:11420, v8:11429
Change-Id: I36a9171f43a574eb67880cbca6cf9ff7ab291e60
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2720189Reviewed-by: Victor Gomes <victorgomes@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Auto-Submit: Patrick Thier <pthier@chromium.org>
Commit-Queue: Patrick Thier <pthier@chromium.org>
Cr-Commit-Position: refs/heads/master@{#73186}

Fixes an issue with tracing empty ephemeron values of mixin types.

Bug: chromium:1056170
Change-Id: I0089df29943ba7670ec4bdfa5592a01b0ec6de04
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2732025Reviewed-by: Omer Katz <omerkatz@chromium.org>
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#73185}

This is a reland of 6e234e9d
Fix CFI by adding a BTI instruction at the start of the handler.

Original change's description:
> [wasm][liftoff][eh] Implement catch_all
>
> Inline a catch handler after each potentially throwing call. The handler
> just merges values into the actual catch environment and then jumps to
> the catch body.
>
> This automatically adds support for unwind, which also uses the
> "CatchAll" interface method.
>
> Many tests can be written either with "catch" or with "catch_all".
> Duplicate them to get coverage for both.
>
> R=clemensb@chromium.org
>
> Bug: v8:11453
> Change-Id: I789ad44b8d1e496f026157d5c37a12004a8b37e3
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2726497
> Reviewed-by: Clemens Backes <clemensb@chromium.org>
> Commit-Queue: Thibaud Michaud <thibaudm@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#73129}

Bug: v8:11453
Change-Id: I84d90877e6227a1966b6347877a9c18e213d9419
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2732023
Commit-Queue: Thibaud Michaud <thibaudm@chromium.org>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#73184}

This reverts commit 3ba9e866.

Reason for revert: Breaks libfuzzer

Original change's description:
> [api] Advance API deprecation
>
> Bug: v8:11165
> Change-Id: Id1c7abec73d5dd4824c0d84c9789a8b4ea4911ac
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2726513
> Reviewed-by: Igor Sheludko <ishell@chromium.org>
> Commit-Queue: Camillo Bruni <cbruni@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#73156}

Bug: v8:11165
Change-Id: Ia193be7aba6fc303a9f1d6853d373787118e39e3
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2732024
Auto-Submit: Camillo Bruni <cbruni@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@{#73183}

Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/122de42..d98aad9

Rolling v8/buildtools: https://chromium.googlesource.com/chromium/src/buildtools/+log/b60d41f..781cef0

Rolling v8/buildtools/third_party/libc++abi/trunk: https://chromium.googlesource.com/external/github.com/llvm/llvm-project/libcxxabi/+log/6918862..8f03866

Rolling v8/third_party/aemu-linux-x64: xxaIXDIq8jINlzwdt2TTV0PFwnzlgMri76ohrXyvF-wC..utMThAHCm2co_NtVTIgysmvQlZ4OLWTUAedi23ThU2MC

Rolling v8/third_party/catapult: https://chromium.googlesource.com/catapult/+log/6da8f82..1f50378

Rolling v8/third_party/depot_tools: https://chromium.googlesource.com/chromium/tools/depot_tools/+log/bf0766c..e0a2e12

Rolling v8/tools/clang: https://chromium.googlesource.com/chromium/src/tools/clang/+log/6a9fd91..1ab4fae

TBR=v8-waterfall-sheriff@grotations.appspotmail.com

Change-Id: If4bb8bdedb6b9edf1a7f7716a7227c30137a2459
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2734009Reviewed-by: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Commit-Queue: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#73182}

This reverts commit 77838343.

Reason for revert: Mysterious win32 test262 failures: https://ci.chromium.org/ui/p/v8/builders/ci/V8%20Win32%20-%20debug/30119/overview

Original change's description:
> [wasm-simd] Remove add horiz instructions
>
> Bug: v8:6020
> Change-Id: I0605798d03f2e9f9c3c07c49141289889a10a3b0
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2727204
> Reviewed-by: Deepti Gandluri <gdeepti@chromium.org>
> Commit-Queue: Zhi An Ng <zhin@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#73180}

Bug: v8:6020
Change-Id: Id1a58d7689d506b17ed04a7df67fec4003bc523d
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2733662
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@{#73181}

Bug: v8:6020
Change-Id: I0605798d03f2e9f9c3c07c49141289889a10a3b0
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2727204Reviewed-by: Deepti Gandluri <gdeepti@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#73180}

This reverts commit fe00fbd9.

Reason for revert: Broke on noavx https://ci.chromium.org/ui/p/v8/builders/ci/V8%20Linux64%20-%20debug/36175/overview

Original change's description:
> [wasm-simd][liftoff] Compile double precision conversions
>
> I missed actually handling these instructions in liftoff-compiler, so
> even though the assembler functions were implemented for all archs, we
> weren't running them.
>
> This properly handles the instructions and a couple of fixes:
>
> - for arm64, typos in using signed instructions for unsigned Wasm ops
> - for arm, handle the case where dst == src, which leads to us
> overwriting src and then reading junk from the overwritten portions to
> convert
>
> Bug: v8:11265
> Change-Id: I7919280bdf395137e95075deb30ed815100df222
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2728382
> Reviewed-by: Clemens Backes <clemensb@chromium.org>
> Reviewed-by: Deepti Gandluri <gdeepti@chromium.org>
> Commit-Queue: Zhi An Ng <zhin@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#73178}

Bug: v8:11265
Change-Id: I9bce3418c5321ded38e339cd96a9e7e399190c96
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2733660
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@{#73179}

I missed actually handling these instructions in liftoff-compiler, so
even though the assembler functions were implemented for all archs, we
weren't running them.

This properly handles the instructions and a couple of fixes:

- for arm64, typos in using signed instructions for unsigned Wasm ops
- for arm, handle the case where dst == src, which leads to us
overwriting src and then reading junk from the overwritten portions to
convert

Bug: v8:11265
Change-Id: I7919280bdf395137e95075deb30ed815100df222
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2728382Reviewed-by: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Deepti Gandluri <gdeepti@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#73178}

We don't need DefineSameAsFirst for AVX, this can save some moves.

Bug: v8:11190
Change-Id: I301896527cbeab62636b4af744ab0d3b42094ae2
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2727152Reviewed-by: Bill Budge <bbudge@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#73177}

We don't need DefineSameAsFirst for AVX, this can save some moves.

Bug: v8:9561
Change-Id: Ie30334d4a8f82d171d8048c2e02792c60b0106a7
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2727151Reviewed-by: Bill Budge <bbudge@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#73176}

Change-Id: Ic6d25a2fbb22a1c658bcfa9dedae0c7b5dd13794
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2733072Reviewed-by: Junliang Yan <junyan@redhat.com>
Commit-Queue: Milad Fa <mfarazma@redhat.com>
Cr-Commit-Position: refs/heads/master@{#73175}

Also introduced a new generic macro to decode vx instructions.

Change-Id: I52477213555381b401022434de2946f91558a0b6
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2732609Reviewed-by: Junliang Yan <junyan@redhat.com>
Commit-Queue: Milad Fa <mfarazma@redhat.com>
Cr-Commit-Position: refs/heads/master@{#73174}

Bug: v8:11508
Change-Id: I27c01b9069de283247cfae4f5e5bfc42ebb998a5
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2720017Reviewed-by: Deepti Gandluri <gdeepti@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#73173}

Add a couple of missing dependencies to the build rules for
torque-generated files. Also add a allow_circular_includes_from
declaration to v8_initializers, so that its files can be accessed by
torque_generated_initializers which cannot depend on v8_initializers
without introducing a cycle.

This reduces the number of gn check errors with --check-generated from
10512 to 33.

Bug: v8:7330
Change-Id: I324295c639094c258b3e8e674aef6edc043fe505
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2732014
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Auto-Submit: Dan Elphick <delphick@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#73172}

This is similar to the x64 optimization for i8x16.swizzle.

Use external refs to load the masks neded for i8x16.swizzle. Before it
would need 3 instructions (2 moves + 1 pshufd), now it requires 2 moves.
Also on AVX we can relax the dst == src requirement, which can
potentially save a move too.

Extract the code sequence into a macro-assembler function for sharing
between Liftoff and TurboFan.

Bug: v8:11346
Change-Id: Id0ec5e891595f0b0fc2922e932fc6c501eca8dc1
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2727150Reviewed-by: Bill Budge <bbudge@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#73171}

Changes:
- Add wasm-specific opcodes to MemoryOptimizer::CanAllocate.
- Instantiate PipelineData::{simplified_, javascript_, jsgraph_} in the
  wasm pipeline.
- In pipeline.cc, move WasmHeapStubCompilationJob below
  MemoryOptimizationPhase.
- Introduce WasmBaseOptimizationPhase, use it in the wasm pipeline.
- Add allow_singalling_nan argument to CsaEarlyOptimizationPhase and
  CsaOptimizationPhase.

Bug: v8:11510
Change-Id: I6d886a352ce0be612415f51d29860aeb6c0efcf4
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2726503Reviewed-by: Maya Lekova <mslekova@chromium.org>
Commit-Queue: Manos Koukoutos <manoskouk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#73170}

This CL is the first in 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 does the following:

a) In PropertyAccessInfo::Kind, rename kDataConstant and
kAccessorConstant to kFastDataConstant and kFastAccessorConstant,
respectively, to indicate that these kinds are used for fast mode
holders.

b) In PropertyAccessInfo::Kind, add kDictionaryProtoDataConstant and
kDictionaryProtoAccessorConstant, which will be used for dictionary
mode holders (which must also be prototypes, as stated  above).

c) Add a member dictionary_index_ to PropertyAccessInfo, which is
used by the kinds mentioned in b)

Bug: v8:11248
Change-Id: Id1c10215aab287066a9765756f112c8035141013
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2718228
Commit-Queue: Frank Emrich <emrich@google.com>
Reviewed-by: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#73169}

This reverts commit fab754ff.

Reason for revert: TSan failures: https://ci.chromium.org/ui/p/v8/builders/ci/V8%20Linux64%20TSAN%20-%20isolates/13875/overview

Original change's description:
> [wasm][debug] Cache debugging code
>
> This adds a little cache for debugging code, including stepping code.
> Especially in stepping, we are currently repeatedly recompiling the same
> function, because whenever we pause (after every step) we clear
> stepping, only to reinstantiate it if the user continues stepping.
> Especially in source-level stepping this is wasteful, because stepping
> over a single line of C++ code can execute hundreds or thousands of
> steps in wasm.
>
> R=​thibaudm@chromium.org
>
> Bug: chromium:1172299
> Change-Id: Id59a26cc67a5bf4a2d3cf6b1e8f14a8b1c73712c
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2732015
> Reviewed-by: Thibaud Michaud <thibaudm@chromium.org>
> Commit-Queue: Clemens Backes <clemensb@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#73162}

Bug: chromium:1172299
Change-Id: I8fac7701e6f58012c8e17322c22f29692ee8932b
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2732020
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@{#73168}

This was missing in CppHeap which means the used_bytes counter in
EmbedderTracing was reset to 0 after every GC.

Bug: chromium:1056170
Change-Id: Iddb0aa1eff9cc354622653376c6623364e015c5d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2732668
Commit-Queue: Omer Katz <omerkatz@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#73167}

The first pass in loop-unrolling aims to process stack check and loop
exit nodes. These nodes are all connected in a known fashion to the loop
header, so there is no need to traverse the whole loop.

Bug: v8:11298
Change-Id: I8336290ce7dddc8967f3fe05d3064b681c1e5c5a
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2732007Reviewed-by: Nico Hartmann <nicohartmann@chromium.org>
Commit-Queue: Manos Koukoutos <manoskouk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#73166}

The implementation was added in the various assembler but not actually
handled in liftoff-compiler.

Bug: v8:11348
Change-Id: Ie05bb5e607498a5e5cd283402f9d1eb08ce81661
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2726548Reviewed-by: Clemens Backes <clemensb@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#73165}

This is similar to the optimization for f32x4 dup + mul in
https://crrev.com/c/2719083. Refactor the pattern-matching code into a
helper function that returns a struct with all the necessary fields to
emit the optimized fmul by element instruction.

Add similar unittests and a negative test as well.

Bug: v8:11257
Change-Id: I79ab0bc783f43397191a54bf6fa736dd4dc8d807
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2728428Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#73164}

When retrieving an API accessor function (i.e. either the getter or the
setter) for which the lazy accessor mechanism is used (i.e. where the
actual JSFunction is created lazily and only the FunctionTemplateInfo)
is around, we thus far created a fresh JSFunction every time the
accessor function is requested, but that's observably wrong behavior,
since the accessors are JavaScript objects with identity. We currently
rely on the instantiation cache to guarantee identity, but there's no
reason why we couldn't instead just put the instantiated JSFunction into
the AccessorPair.

Fixing this to only instantiate the lazy accessor pair only once, upon
first time it's requested, coincidentally also simplifies (and fixes)
the API accessor breakpoint machinery. This was previously lacking
support for walking dictionary prototype objects and forcibly
instantiating the lazy accessor pairs with break points. However, all
this magic in the debugger is no longer necessary when we ensure that
the lazy accessor pair component is generally only instantiated once.

Bug: v8:178, v8:7596, chromium:986063, chromium:496666
Change-Id: I41d28378010716c96c8ecf7c3f1247765f8bc669
Fixed: chromium:1163547
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2731527Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#73163}

This adds a little cache for debugging code, including stepping code.
Especially in stepping, we are currently repeatedly recompiling the same
function, because whenever we pause (after every step) we clear
stepping, only to reinstantiate it if the user continues stepping.
Especially in source-level stepping this is wasteful, because stepping
over a single line of C++ code can execute hundreds or thousands of
steps in wasm.

R=thibaudm@chromium.org

Bug: chromium:1172299
Change-Id: Id59a26cc67a5bf4a2d3cf6b1e8f14a8b1c73712c
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2732015Reviewed-by: Thibaud Michaud <thibaudm@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#73162}

Bug: chromium:1153363, v8:10047
Change-Id: I1ee305ee25c8fab64756ba2b0cf38a3c6b004d30
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2732667Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#73161}

Now that all individual methods are being performed concurrently, we can
move DescriptorArray to skip serialization.

Bug: v8:7790
Change-Id: I4bda72e6302b0f2e224f9fa2e4e97877e42a3c2d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2720280
Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#73160}

Handles are notorious for preventing compiler optimizations. We should
avoid them for simple const functions.

- Mark more API functions const
- Mark more String functions const

Bug: v8:11195, chromium:808503, v8:11263
Change-Id: I9940e85600bc7d19027039d807b3313e2dcccdc7
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2575065Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#73159}

Bug: v8:11298
Change-Id: I99d36812aabd99fd92a20f743705aee193914381
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2731530Reviewed-by: Manos Koukoutos <manoskouk@chromium.org>
Commit-Queue: Nico Hartmann <nicohartmann@chromium.org>
Cr-Commit-Position: refs/heads/master@{#73158}

- Add private NewStructInternal
- Dehandlify JSObject initializers

Bug: v8:11263
Change-Id: I62d77ef32747c2042de707ba10fad20327af0930
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2729342Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#73157}

Bug: v8:11165
Change-Id: Id1c7abec73d5dd4824c0d84c9789a8b4ea4911ac
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2726513Reviewed-by: Igor Sheludko <ishell@chromium.org>
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#73156}

Also add the qualifier `compiler::` to places where it should have been
used in the first place.

Bug: v9:6949
Change-Id: Ib5ca6829cd9d72b1e3047afc92363910c902bbbf
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2731529Reviewed-by: Nico Hartmann <nicohartmann@chromium.org>
Reviewed-by: Mythri Alle <mythria@chromium.org>
Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
Cr-Commit-Position: refs/heads/master@{#73155}

LargePage::PayloadSize inclues the heap object header.
Keeping PayloadSize as is to keep it aligned with
NormalPage::PayloadSize and introducing LargePage::ObjectSize as the
counterpart for HeapObjectHeader::ObjectSize that will exclude the
header.

Bug: chromium:1056170
Change-Id: I8a5f50841fd9dbd6c9a4a4035d9040021944cacc
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2731533Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Omer Katz <omerkatz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#73154}

This CL is part of a series that adds the C++ implementation of
SwissNameDictionary, a deterministic property backing store based on
Swiss Tables.

This CL contains:
1. Copy and equality functions used for testing
2. Runtime functions corresponding to most dictionary operations,
   which are used temporarily while the CSA/Torque implementation
   is work in progress
3. Some minor changes to SwissNameDictionary needed for testing
   (adding template instantiations, V8_EXPORT_PRIVATE, ...)

Bug: v8:11388
Change-Id: Iea5f4650b0a443edf563565138ea86fcb45af13a
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2722094
Commit-Queue: Frank Emrich <emrich@google.com>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Marja Hölttä <marja@chromium.org>
Cr-Commit-Position: refs/heads/master@{#73153}

This is a wasm-only test, hence move it to the wasm directory and skip
it in no-wasm builds.

R=ahaas@chromium.org

Bug: v8:11238
Change-Id: I57c9abbb98c3415f4d759372d479e1f61464217f
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2731536Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#73152}

This is a partial reland of https://crrev.com/c/2601880 .

In preparation for ScopeInfo not being a FixedArrayBase, this change
privatizes the FixedArray-style functions that provide access to
ScopeInfo fields by index, and moves them from scope-info-inl.h to
scope-info.cc. Those functions are still used pretty heavily during
initialization (ScopeInfo::Create, etc.), but at least we can avoid
presenting them to the rest of the world.

This change also introduces a new length() function in ScopeInfo which
hides the one inherited from FixedArrayBase and computes the ScopeInfo's
length based on its flags, so that there are no remaining readers of the
'length' field.

Change-Id: I609754010723b679e5cf00f386020faaab84c17a
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2718275
Commit-Queue: Toon Verwaest <verwaest@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Cr-Commit-Position: refs/heads/master@{#73151}

Fixes gn check error due to include of
test/common/wasm/wasm-macro-gen.h. Also changes common_test_headers dep
from v8_for_testing to v8_internal_headers, since otherwise on windows
the wasm_api_tests binary ends up depending on wee8 and
libv8_for_testing which define many of the same symbols.

Bug: v8:7330
Change-Id: Ib03b860668146f21456729a3d2c5e0d75d8c17d4
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2729335
Auto-Submit: Dan Elphick <delphick@chromium.org>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#73150}