Fixes the implementation of wasm exceptions to use a WasmRuntimeError
object, and set the exception tag value as a property of the
object. This guarantees that an uncaught wasm exception is treated
like all other runtime errors.
Bug: v8:6577
Change-Id: I0ab0130444e745178e86c23b3bc9fc9f385c8d05
Reviewed-on: https://chromium-review.googlesource.com/611124
Reviewed-by: Bill Budge <bbudge@chromium.org>
Reviewed-by: Eric Holk <eholk@chromium.org>
Commit-Queue: Karl Schimpf <kschimpf@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47346}
This is a reland of 470a10015d
Original change's description:
> Start migration of try/throw/catch to match proposal.
>
> This CL does the first baby steps on moving the current (experimental)
> exception handling to match that of the WebAssembly proposal.
>
> It does the following:
>
> 1) Use exception tags instead of integers.
>
> 2) Only handle empty exception signatures (i.e. no values associated
> with the exception tag.
>
> 3) Only handle one catch clause.
>
> 4) Be sure to rethrow the exception if the exception tag does not match.
>
> Note: There are many things that need to be fixed, and are too
> numerous to list here. However, the code should have TODO's on each
> missing parts of the implementation.
>
> Also note that the code currently doesn't handle nested catch blocks,
> nor does it change the throw value being an integer. Rather, the
> integer value is still being thrown, and currently is the exception
> tag. Therefore, we don't build an exception object. This is the reason
> why this CL doesn't handle exceptions that pass values.
>
> Also, the current implementation still can't handle multiple modules
> because tag resolution (between) modules has not be implemented yet.
>
> Bug: v8:6577
> Change-Id: Id6d08b641b3c42d1eec7d4db582f2dab35406114
> Reviewed-on: https://chromium-review.googlesource.com/591910
> Reviewed-by: Brad Nelson <bradnelson@chromium.org>
> Commit-Queue: Karl Schimpf <kschimpf@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#47087}
Bug: v8:6577
Change-Id: I41c3309827c292cb787681a95aaef7cf9b931835
Reviewed-on: https://chromium-review.googlesource.com/598968
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Brad Nelson <bradnelson@chromium.org>
Commit-Queue: Brad Nelson <bradnelson@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47100}
This reverts commit 470a10015d.
Reason for revert: GC stress bot failures.
https://uberchromegw.corp.google.com/i/client.v8/builders/V8%20Mac%20GC%20Stress/builds/14522
Original change's description:
> Start migration of try/throw/catch to match proposal.
>
> This CL does the first baby steps on moving the current (experimental)
> exception handling to match that of the WebAssembly proposal.
>
> It does the following:
>
> 1) Use exception tags instead of integers.
>
> 2) Only handle empty exception signatures (i.e. no values associated
> with the exception tag.
>
> 3) Only handle one catch clause.
>
> 4) Be sure to rethrow the exception if the exception tag does not match.
>
> Note: There are many things that need to be fixed, and are too
> numerous to list here. However, the code should have TODO's on each
> missing parts of the implementation.
>
> Also note that the code currently doesn't handle nested catch blocks,
> nor does it change the throw value being an integer. Rather, the
> integer value is still being thrown, and currently is the exception
> tag. Therefore, we don't build an exception object. This is the reason
> why this CL doesn't handle exceptions that pass values.
>
> Also, the current implementation still can't handle multiple modules
> because tag resolution (between) modules has not be implemented yet.
>
> Bug: v8:6577
> Change-Id: Id6d08b641b3c42d1eec7d4db582f2dab35406114
> Reviewed-on: https://chromium-review.googlesource.com/591910
> Reviewed-by: Brad Nelson <bradnelson@chromium.org>
> Commit-Queue: Karl Schimpf <kschimpf@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#47087}
TBR=bradnelson@chromium.org,eholk@chromium.org,kschimpf@chromium.org
Change-Id: I01dc8c40cc1057333a988c1d275ce5f457b0cb64
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:6577
Reviewed-on: https://chromium-review.googlesource.com/598847
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47090}
This CL does the first baby steps on moving the current (experimental)
exception handling to match that of the WebAssembly proposal.
It does the following:
1) Use exception tags instead of integers.
2) Only handle empty exception signatures (i.e. no values associated
with the exception tag.
3) Only handle one catch clause.
4) Be sure to rethrow the exception if the exception tag does not match.
Note: There are many things that need to be fixed, and are too
numerous to list here. However, the code should have TODO's on each
missing parts of the implementation.
Also note that the code currently doesn't handle nested catch blocks,
nor does it change the throw value being an integer. Rather, the
integer value is still being thrown, and currently is the exception
tag. Therefore, we don't build an exception object. This is the reason
why this CL doesn't handle exceptions that pass values.
Also, the current implementation still can't handle multiple modules
because tag resolution (between) modules has not be implemented yet.
Bug: v8:6577
Change-Id: Id6d08b641b3c42d1eec7d4db582f2dab35406114
Reviewed-on: https://chromium-review.googlesource.com/591910
Reviewed-by: Brad Nelson <bradnelson@chromium.org>
Commit-Queue: Karl Schimpf <kschimpf@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47087}
This adds a convenience method for the common Smi to int conversion
pattern.
Bug:
Change-Id: I7d7b171c36cfec5f6d10c60f1d9c3e06e3aed0fa
Reviewed-on: https://chromium-review.googlesource.com/563205
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Andreas Rossberg <rossberg@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46516}
To be able to use this in optimized code dependency relationships.
Bug:
Change-Id: Ia099a68994b1252de3c72c8d688862ca17ca76d9
Reviewed-on: https://chromium-review.googlesource.com/548716
Commit-Queue: Michael Stanton <mvstanton@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46277}
ThrowIfHole bytecodes were handled by introducing deopt points to check
for a hole. To avoid deopt loops a hole check protector was used to
generate control flow if there was a deopt due to a hole. However, the
normal control flow version should be as fast as the deopt version
in general. The deopt version could potentially consume less compile time
but it may not be worth the complexity added. Hence simplifying it to
only construct the control flow.
Bug: v8:6383
Change-Id: Icace11f7a6e21e64e1cebd104496e3f559bc85f7
Reviewed-on: https://chromium-review.googlesource.com/525573
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Commit-Queue: Mythri Alle <mythria@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45783}
Introduces ThrowReferenceErrorIfHole / ThrowSuperNotCalledIfHole
/ ThrowSuperAlreadyCalledIfNotHole bytecodes to handle hole checks.
In the bytecode-graph builder they are handled by introducing a deopt point
instead of adding explicit control flow. JumpIfNotHole / JumpIfNotHoleConstant
bytecodes are removed since they are no longer required.
Bug: v8:4280, v8:6383
Change-Id: I58b70c556b0ffa30e41a0cd44016874c3e9c5fe1
Reviewed-on: https://chromium-review.googlesource.com/509613
Commit-Queue: Mythri Alle <mythria@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45720}
Add a protector cell for string bounds checks that is being used to
protect speculative bounds for String.prototype.charCodeAt and
String.prototype.charAt in TurboFan (and Crankshaft). This way we don't
have the diamond in optimized code, which stands in the way of other
optimizations for charCodeAt that are currently being worked on by
petermarshall@.
BUG=v8:6391
TBR=mlippautz@chromium.orgR=petermarshall@chromium.org
Review-Url: https://codereview.chromium.org/2905623003
Cr-Commit-Position: refs/heads/master@{#45514}
We cannot skip the @@hasInstance lookup in instanceof depending on a
global protector cell, as the lookup of the property is observable
via proxies or accessors. So remove the global protector and properly
implement CSA::InstanceOf via GetPropertyStub, with an appropriate
fast-path for Function.prototype[@@hasInstance] where we call the
builtin code object directly if the function matches, skipping all
the checks from the call sequence, and also avoid the redundant
ToBoolean conversion on the result.
R=yangguo@chromium.orgTBR=ulan@chromium.org
BUG=v8:5958
Review-Url: https://codereview.chromium.org/2684033012
Cr-Commit-Position: refs/heads/master@{#43137}
We need it to be a PropertyCell so that we can list it as a dependency for
optimised code.
Also drive-by clean up some variable names in src/isolate-inl.h.
BUG=v8:5895
Review-Url: https://codereview.chromium.org/2658573008
Cr-Commit-Position: refs/heads/master@{#42764}
We don't need to check for neutered array buffers unless at least one
JSArrayBuffer has been neutered (i.e. detached in TC39 speak). For this
we introduce a protector cell that get's invalidated on first call to
the JSArrayBuffer::Neuter() method.
R=jarin@chromium.org,ulan@chromium.org
BUG=v8:5267
Review-Url: https://codereview.chromium.org/2504163002
Cr-Commit-Position: refs/heads/master@{#41021}
Avoid using the iterator for arrays with fast elements where the iterator has
not been modified.
Only deals with the case where there is a single spread argument.
Improves the six-speed "spread" benchmark to 1.5x slower than baseline es5 implementation, compared to 19x slower previously.
BUG=v8:5511
Review-Url: https://codereview.chromium.org/2465253011
Cr-Commit-Position: refs/heads/master@{#40998}
This is essentially CL/2275293002, with the difference that the effect
dependencies are now updated correctly.
BUG=
Review-Url: https://codereview.chromium.org/2378773013
Cr-Commit-Position: refs/heads/master@{#39919}
Reason for revert:
Regresses API see go/v8-startup-api
Original issue's description:
> [api] Clean up scopes and precheck instantiations cache
>
> Make sure all the scopes used in api-natives.cc have inlineable constructors
> and destructors. Additionally directly precheck the instantiations cache before
> trying to enter the InvokeScope which sets the save_context.
>
> BUG=chromium:630217
>
> Committed: https://crrev.com/a2496b942cad524f0f3144b107936eaa9a7c9fd5
> Cr-Commit-Position: refs/heads/master@{#38346}
TBR=yangguo@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=chromium:630217, chromium:635912
Review-Url: https://codereview.chromium.org/2366903003
Cr-Commit-Position: refs/heads/master@{#39680}
Crankshaft just unconditionally deoptimizes the code when the length of
a string addition result would overflow. In order to protect against
deopt loops we insert a global protector cell.
We will use the same mechanism for inlining certain string additions
into TurboFan as well, and protecting against overflow (we will also
extend this to deal with String.prototype.concat and friends once we
get there).
BUG=v8:5404
R=jarin@chromium.org,hpayer@chromium.org
CQ_INCLUDE_TRYBOTS=master.tryserver.v8:v8_linux64_msan_rel
Committed: https://crrev.com/cb19257a926a55209a6d6858ce26d51a0447ba71
Review-Url: https://codereview.chromium.org/2348293002
Cr-Original-Commit-Position: refs/heads/master@{#39511}
Cr-Commit-Position: refs/heads/master@{#39525}
Reason for revert:
Mean https://build.chromium.org/p/client.v8/builders/V8%20Linux%20-%20arm64%20-%20sim%20-%20MSAN/builds/10910
Original issue's description:
> [crankshaft] Protect against deopt loops from string length overflows.
>
> Crankshaft just unconditionally deoptimizes the code when the length of
> a string addition result would overflow. In order to protect against
> deopt loops we insert a global protector cell.
>
> We will use the same mechanism for inlining certain string additions
> into TurboFan as well, and protecting against overflow (we will also
> extend this to deal with String.prototype.concat and friends once we
> get there).
>
> BUG=v8:5404
> R=jarin@chromium.org,hpayer@chromium.org
>
> Committed: https://crrev.com/cb19257a926a55209a6d6858ce26d51a0447ba71
> Cr-Commit-Position: refs/heads/master@{#39511}
TBR=hpayer@chromium.org,jarin@chromium.org,bmeurer@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:5404
Review-Url: https://codereview.chromium.org/2357433002
Cr-Commit-Position: refs/heads/master@{#39518}
Crankshaft just unconditionally deoptimizes the code when the length of
a string addition result would overflow. In order to protect against
deopt loops we insert a global protector cell.
We will use the same mechanism for inlining certain string additions
into TurboFan as well, and protecting against overflow (we will also
extend this to deal with String.prototype.concat and friends once we
get there).
BUG=v8:5404
R=jarin@chromium.org,hpayer@chromium.org
Review-Url: https://codereview.chromium.org/2348293002
Cr-Commit-Position: refs/heads/master@{#39511}
Reason for revert:
asan failures are caused by a flaky stack-verflow (see https://codereview.chromium.org/2218033002 for a fix).
Original issue's description:
> Revert of [api] Clean up scopes and precheck instantiations cache (patchset #3 id:40001 of https://codereview.chromium.org/2206773003/ )
>
> Reason for revert:
> [Sheriff] Leads to mac asan failures:
> https://build.chromium.org/p/client.v8/builders/V8%20Mac64%20ASAN/builds/7835
>
> Original issue's description:
> > [api] Clean up scopes and precheck instantiations cache
> >
> > Make sure all the scopes used in api-natives.cc have inlineable constructors
> > and destructors. Additionally directly precheck the instantiations cache before
> > trying to enter the InvokeScope which sets the save_context.
> >
> > BUG=chromium:630217
> >
> > Committed: https://crrev.com/a2496b942cad524f0f3144b107936eaa9a7c9fd5
> > Cr-Commit-Position: refs/heads/master@{#38346}
>
> TBR=yangguo@chromium.org,cbruni@chromium.org
> # Skipping CQ checks because original CL landed less than 1 days ago.
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=chromium:630217
>
> Committed: https://crrev.com/e1b5cb43a9b90546ff5d6cea89ba17c485e842fb
> Cr-Commit-Position: refs/heads/master@{#38356}
TBR=yangguo@chromium.org,machenbach@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:630217
Review-Url: https://codereview.chromium.org/2217353002
Cr-Commit-Position: refs/heads/master@{#38401}
Reason for revert:
[Sheriff] Leads to mac asan failures:
https://build.chromium.org/p/client.v8/builders/V8%20Mac64%20ASAN/builds/7835
Original issue's description:
> [api] Clean up scopes and precheck instantiations cache
>
> Make sure all the scopes used in api-natives.cc have inlineable constructors
> and destructors. Additionally directly precheck the instantiations cache before
> trying to enter the InvokeScope which sets the save_context.
>
> BUG=chromium:630217
>
> Committed: https://crrev.com/a2496b942cad524f0f3144b107936eaa9a7c9fd5
> Cr-Commit-Position: refs/heads/master@{#38346}
TBR=yangguo@chromium.org,cbruni@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:630217
Review-Url: https://codereview.chromium.org/2216903003
Cr-Commit-Position: refs/heads/master@{#38356}
Make sure all the scopes used in api-natives.cc have inlineable constructors
and destructors. Additionally directly precheck the instantiations cache before
trying to enter the InvokeScope which sets the save_context.
BUG=chromium:630217
Review-Url: https://codereview.chromium.org/2206773003
Cr-Commit-Position: refs/heads/master@{#38346}
The showed up unnaturally high while profiling DOM node creation.
BUG=chromium:630217
Review-Url: https://codereview.chromium.org/2181323002
Cr-Commit-Position: refs/heads/master@{#38068}
Reason for revert:
Cannot reproduce gc-stress failures locally.
Original issue's description:
> Revert of Replace all remaining Oddball checks with new function (patchset #10 id:180001 of https://codereview.chromium.org/2043183003/ )
>
> Reason for revert:
> failing tests
>
> Original issue's description:
> > Replace all remaining Oddball checks with new function
> >
> > This CL removes the IsUndefined() and Co. methods from Object and HeapObject.
> > The new method all take the isolate as parameter.
> >
> > BUG=
> >
> > Committed: https://crrev.com/ccefb3ae5fe967288d568013fb04e8761eafebc5
> > Cr-Commit-Position: refs/heads/master@{#36921}
>
> TBR=mstarzinger@chromium.org,verwaest@chromium.org,yangguo@chromium.org,ahaas@chromium.org
> # Skipping CQ checks because original CL landed less than 1 days ago.
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=
>
> Committed: https://crrev.com/33b8bc24a12fb062100c0be84456faeb0b9fa5d1
> Cr-Commit-Position: refs/heads/master@{#36923}
TBR=mstarzinger@chromium.org,verwaest@chromium.org,yangguo@chromium.org,ahaas@chromium.org
BUG=
Review-Url: https://codereview.chromium.org/2059173002
Cr-Commit-Position: refs/heads/master@{#36957}
Reason for revert:
failing tests
Original issue's description:
> Replace all remaining Oddball checks with new function
>
> This CL removes the IsUndefined() and Co. methods from Object and HeapObject.
> The new method all take the isolate as parameter.
>
> BUG=
>
> Committed: https://crrev.com/ccefb3ae5fe967288d568013fb04e8761eafebc5
> Cr-Commit-Position: refs/heads/master@{#36921}
TBR=mstarzinger@chromium.org,verwaest@chromium.org,yangguo@chromium.org,ahaas@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=
Review-Url: https://codereview.chromium.org/2060213002
Cr-Commit-Position: refs/heads/master@{#36923}
This CL removes the IsUndefined() and Co. methods from Object and HeapObject.
The new method all take the isolate as parameter.
BUG=
Review-Url: https://codereview.chromium.org/2043183003
Cr-Commit-Position: refs/heads/master@{#36921}
Passing in the isolate and pointer compare the instnance against the
corresponding constant is always faster than decoding the instance types.
BUG=
Review-Url: https://codereview.chromium.org/2028983002
Cr-Commit-Position: refs/heads/master@{#36744}
This adds back the instanceof operator support in the backends and
introduces a @@hasInstance protector cell on the isolate that guards the
fast path for the InstanceOfStub. This way we recover the ~10%
regression on Octane EarleyBoyer in Crankshaft and greatly improve
TurboFan and Ignition performance of instanceof.
R=ishell@chromium.orgTBR=hpayer@chromium.org,rossberg@chromium.org
BUG=chromium:597249, v8:4447
LOG=n
Review-Url: https://codereview.chromium.org/1980483003
Cr-Commit-Position: refs/heads/master@{#36275}
Currently we do not check for @@isConcatSpreadable properly. If the Symbol is
set on the Array.prototype or Object.prototype the current fast paths fail.
This CL adds a fix to globally invalidate a isConcatSpreadable_protector.
Drive-by-fix: use named accessors for context variables
LOG=N
BUG=chromium:542504, v8:903
Review-Url: https://codereview.chromium.org/1409123003
Cr-Commit-Position: refs/heads/master@{#36201}
- Inline reads to the species protector
- Put V8_LIKELY/V8_UNLIKELY to guide Array.prototype.{slice,splice,concat}
to the fast paths
- Put the Array species good path checks directly in
Array.prototype.concat to avoid a couple reads of the array constructor
from the native context
These changes together bring a ~4-6% win on
kraken-orig/stanford-crypto-pbkdf2-orig which more than makes up from
the performance degradation from a recent other species-related change.
BUG=chromium:609739
R=cbruni@chromium.org
LOG=Y
Review-Url: https://codereview.chromium.org/1958713003
Cr-Commit-Position: refs/heads/master@{#36121}
This moves __{define,lookup}{Getter,Setter}__ to builtins.cc.
Compared to the first attempt, this patch now preserves non-spec-compliant legacy behavior and does not throw on failure.
Original review: https://codereview.chromium.org/1904313004
Review-Url: https://codereview.chromium.org/1932163002
Cr-Commit-Position: refs/heads/master@{#35899}
Reason for revert:
[Sheriff] Looks like this breaks layout tests:
https://build.chromium.org/p/client.v8.fyi/builders/V8-Blink%20Linux%2064/builds/6442
Original issue's description:
> Remove more dead code after Object.observe removal
>
> This moves __{define,lookup}{Getter,Setter}__ to builtins.cc to free up the JavaScript implementation of DefineOwnProperty for deletion.
TBR=verwaest@chromium.org,jkummerow@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
Review-Url: https://codereview.chromium.org/1929293002
Cr-Commit-Position: refs/heads/master@{#35886}
This moves __{define,lookup}{Getter,Setter}__ to builtins.cc to free up the JavaScript implementation of DefineOwnProperty for deletion.
Review-Url: https://codereview.chromium.org/1904313004
Cr-Commit-Position: refs/heads/master@{#35876}
Previously all contexts had a link to the global object, but what is
required in most cases (except for the global load, store and delete
case) is the native context.
This also removes the second dummy global object that was still linked
to every native context. We will add a different mechanism to ensure
that builtins do not pollute the actual global object during
bootstrapping.
Drive-by-fix: Unify some MacroAssembler magic and drop obsolete stuff.
CQ_INCLUDE_TRYBOTS=tryserver.v8:v8_linux_nosnap_rel
R=yangguo@chromium.org,mstarzinger@chromium.org
Committed: https://crrev.com/d290f204938295bfecc5c8e645ccfcff6e80ddb8
Cr-Commit-Position: refs/heads/master@{#32375}
Review URL: https://codereview.chromium.org/1480003002
Cr-Commit-Position: refs/heads/master@{#32381}
Reason for revert:
[Sheriff] Breaks:
https://build.chromium.org/p/client.v8/builders/V8%20Linux%20-%20nosnap/builds/5472
Original issue's description:
> [runtime] Replace global object link with native context link in all contexts.
>
> Previously all contexts had a link to the global object, but what is
> required in most cases (except for the global load, store and delete
> case) is the native context.
>
> This also removes the second dummy global object that was still linked
> to every native context. We will add a different mechanism to ensure
> that builtins do not pollute the actual global object during
> bootstrapping.
>
> Drive-by-fix: Unify some MacroAssembler magic and drop obsolete stuff.
>
> R=yangguo@chromium.org
>
> Committed: https://crrev.com/d290f204938295bfecc5c8e645ccfcff6e80ddb8
> Cr-Commit-Position: refs/heads/master@{#32375}
TBR=yangguo@chromium.org,mstarzinger@chromium.org,bmeurer@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
Review URL: https://codereview.chromium.org/1478303002
Cr-Commit-Position: refs/heads/master@{#32377}
Previously all contexts had a link to the global object, but what is
required in most cases (except for the global load, store and delete
case) is the native context.
This also removes the second dummy global object that was still linked
to every native context. We will add a different mechanism to ensure
that builtins do not pollute the actual global object during
bootstrapping.
Drive-by-fix: Unify some MacroAssembler magic and drop obsolete stuff.
R=yangguo@chromium.org
Review URL: https://codereview.chromium.org/1480003002
Cr-Commit-Position: refs/heads/master@{#32375}
This CL us a pure refactoring that makes an empty compilation unit
including just "isolate.h" or "contexts.h" but not "objects-inl.h"
compile without warnings or errors. This is needed to further reduce
the header dependency tangle.
R=bmeurer@chromium.org
Review URL: https://codereview.chromium.org/1322883002
Cr-Commit-Position: refs/heads/master@{#30500}
