Adds a stress-background-compile mode which runs compilation on a background
thread at the same time as compiling on the main thread to flush out races.
This is added as one of the variants, removing stress_asm_validation since this
is no longer a useful variant.
BUG=v8:5203
Change-Id: I73dd9f21d9b6da4a4cb39c05061aa24116e6c5ad
Reviewed-on: https://chromium-review.googlesource.com/741746
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Sergiy Byelozyorov <sergiyb@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/master@{#49376}
With this CL, {CreateDefaultPlatform} returns a unique_ptr to indicate
that the caller owns the returned memory. We had several memory leaks
where the memory of the DefaultPlatform did not get deallocated.
In addition, the {TracingController} of the {DefaultPlatform} also gets
received as a unique_ptr. Thereby we document that the {DefaultPlatform}
takes ownership of the {TracingController}. Note that the memory of the
{TracingController} was already owned by the {DefaultPlatform}, but it
was not documented in the interface, and it was used incorrectly in
tests.
This CL fixes the asan issues in
https://chromium-review.googlesource.com/c/v8/v8/+/753583
([platform] Implement TaskRunners in the DefaultPlatform)
R=rmcilroy@chromium.org
Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng
Change-Id: I0d1a6d3b22bb8289dc050b1977e4f58381cec675
Reviewed-on: https://chromium-review.googlesource.com/755033
Reviewed-by: Adam Klein <adamk@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#49349}
Temporary fix for isolate archiver behaving weirdly when the command is
missing.
NOTRY=true
TBR=sergiyb@chromium.org
Bug: v8:7012
Change-Id: I1ccee6be16605426e74b6c4a0379fa502106e5a9
Reviewed-on: https://chromium-review.googlesource.com/768727
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#49344}
We'll use one generic isolate for all number fuzzers. The previous
deopt isolate will be deleted, once the infra hooks have changed.
Bug: v8:6917
Change-Id: I809613548cd935a0208febb002572cc063697324
Reviewed-on: https://chromium-review.googlesource.com/763534
Reviewed-by: Sergiy Byelozyorov <sergiyb@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#49297}
Temporary implementation of GC fuzzer based on the deopt fuzzer.
It will be merged with the deopt fuzzer to create more general numfuzzer.
Webkit test suite updated to ignore trace_incremental_marking flag output.
Bug: v8:6917
Change-Id: I053ae32f3cd3f74ba8b71fc5bdfc7264f54dca11
Reviewed-on: https://chromium-review.googlesource.com/758437
Commit-Queue: Michał Majewski <majeski@google.com>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#49296}
This is necessary in order to support class literals boilerplates which will
contain descriptor arrays not attached to maps.
This CL introduces Heap::descriptor_array_map() which will be used only for
descriptor arrays templates created as a part of class literal boilerplate.
We don't use the new map for all descriptors for now because in order to handle
chicken-egg problem in deserializer which can be solved in a clean and readable
way only if introduce a DESCRIPTOR_ARRAY_TYPE instance type which we can't
currently do because the InstanceType enum is already "full".
Bug: v8:5799
Change-Id: I732d236b0dda2c436ab3ce3ac5967f6c66162df3
Reviewed-on: https://chromium-review.googlesource.com/758360
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#49271}
This adds test coverage for write-protected code pages by adding the
feature to the existing "stress_incremental_marking" variant. Since this
is considered a temporary state, the variant has not been renamed.
R=machenbach@chromium.org
BUG=v8:6792
Change-Id: I62fa5aa15bf5309b12fbc269fcf81069845755f9
Reviewed-on: https://chromium-review.googlesource.com/753388
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#49267}
This change
- adds new maps for elements, global, and named dictionaries.
- adds support to embed these dictionaries in the startup snapshot.
- adds support to embed these dictionaries in the code cache.
- refactors the rehashing logic.
TBR=mstarzinger@chromium.org, ishell@chromium.org, jgruber@chromium.org
Bug: v8:6593
Change-Id: I2455fe2a9cc6e93247940de99de5f124c2ada137
Reviewed-on: https://chromium-review.googlesource.com/756693
Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#49167}
This reverts commit 3877bf6f4b.
Reason for revert: failed compilation on Win64/clang:
https://build.chromium.org/p/client.v8/builders/V8%20Win64%20-%20clang/builds/9015
Original change's description:
> Snapshot: support rehashing property and element dictionaries.
>
> This change
> - adds new maps for elements, global, and named dictionaries.
> - adds support to embed these dictionaries in the startup snapshot.
> - adds support to embed these dictionaries in the code cache.
> - refactors the rehashing logic.
>
> R=ishell@chromium.org, jgruber@chromium.org, mstarzinger@chromium.org
>
> Bug: v8:6593
> Change-Id: I8d9a7ba7145f1af4e6e15301a4d5611f07c77f33
> Reviewed-on: https://chromium-review.googlesource.com/753323
> Reviewed-by: Igor Sheludko <ishell@chromium.org>
> Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
> Reviewed-by: Jakob Gruber <jgruber@chromium.org>
> Commit-Queue: Yang Guo <yangguo@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#49155}
TBR=yangguo@chromium.org,mstarzinger@chromium.org,jgruber@chromium.org,ishell@chromium.org
Change-Id: I0b45d2d07da97b9a7953abf4ad24eec4ea944306
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:6593
Reviewed-on: https://chromium-review.googlesource.com/755493
Reviewed-by: Adam Klein <adamk@chromium.org>
Commit-Queue: Adam Klein <adamk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#49156}
This change
- adds new maps for elements, global, and named dictionaries.
- adds support to embed these dictionaries in the startup snapshot.
- adds support to embed these dictionaries in the code cache.
- refactors the rehashing logic.
R=ishell@chromium.org, jgruber@chromium.org, mstarzinger@chromium.org
Bug: v8:6593
Change-Id: I8d9a7ba7145f1af4e6e15301a4d5611f07c77f33
Reviewed-on: https://chromium-review.googlesource.com/753323
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#49155}
This is a reland of 697b2c09a5
Original change's description:
> Setting up the environment for testrunner refactored
>
> Bug: v8:6917
> Change-Id: Ibc3c738ef807d37d8b76f440d9765c4d0405c021
> Reviewed-on: https://chromium-review.googlesource.com/735421
> Commit-Queue: Michał Majewski <majeski@google.com>
> Reviewed-by: Michael Achenbach <machenbach@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#48923}
Bug: v8:6917
Change-Id: I07918814ee8277eca96bcb2d330e6b08f6a0505d
Reviewed-on: https://chromium-review.googlesource.com/741621
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michał Majewski <majeski@google.com>
Cr-Commit-Position: refs/heads/master@{#49078}
The status-file flags and the flags from the test case's source code
must always overwrite extra flags set by bots.
Bug: v8:6924
Cq-Include-Trybots: master.tryserver.v8:v8_linux_noi18n_rel_ng
Change-Id: I0e2aabb69da7cfb8ba6c1c79bd3851462071a6ac
Reviewed-on: https://chromium-review.googlesource.com/732656
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Sergiy Byelozyorov <sergiyb@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#49001}
The current_cpu value was erroneously removed from the build config json.
In multi-arch builds, each toolchain subdirectory in the build-product
output emits its own build-config json, where current_cpu determines
the architecture type of the sub-build.
Correctness-fuzzer runs could wrongly determined x86 sub-builds as x64.
Bug: chromium:777285
Change-Id: I5104630cd8ebbd263d557fb29771a31a2a1d78c2
Reviewed-on: https://chromium-review.googlesource.com/737797
Reviewed-by: Sergiy Byelozyorov <sergiyb@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48950}
This is a reland of eeaffa9f33
Original change's description:
> [objects] Introduce {CodeDataContainer} object type.
>
> This introduces the {CodeDataContainer} as a container for all mutable
> fields associated with a {Code} object. For now only the kind-specific
> flags are moved, but more fields can/will be moved gradually. The goal
> is to make all fields in the {Code} header be immutable eventually.
>
> R=jarin@chromium.org
> BUG=v8:6792
>
> Change-Id: I2eeba893afaba877fb6117e1f18371898c3a175e
> Reviewed-on: https://chromium-review.googlesource.com/732987
> Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
> Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#48902}
Bug: v8:6792
Change-Id: I31a127df4bb8ee5fedb4d73755df4deae6e1d352
Reviewed-on: https://chromium-review.googlesource.com/738109
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48928}
This reverts commit e26cd87496.
Reason for revert: The issue has been fixed. See related bug for description and CLs.
Original change's description:
> [heap] Add TSAN suppression for lock-order inversion in Scavenger
>
> The Scavenger currently requires taking the lock for OLD->NEW processing
> and can also take another lock for sweeping a different page.
>
> Since order of pages during scavenge and sweep is unstable this may
> result in lock order inversion reports on TSAN when long-running
> programms are only executed on a single thread.
>
> The report is a false positve, hence flag it as suppression until we
> redesign this particular piece.
>
> No-try: true
> Bug: v8:6923
> Change-Id: I82355be1c8d83ea61cc21152aeb10b58b1dc4b86
> Reviewed-on: https://chromium-review.googlesource.com/716261
> Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
> Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#48504}
# Not skipping CQ checks because original CL landed > 1 day ago.
Bug: v8:6923
Change-Id: I7711466c6e2175dcab8d64d6a642e458e1cde3f5
Reviewed-on: https://chromium-review.googlesource.com/738110
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Hannes Payer <hpayer@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48913}
This reverts commit eeaffa9f33.
Reason for revert: Breaks msan compile (uninitialized value in snapshot):
https://build.chromium.org/p/client.v8/builders/V8%20Linux%20-%20arm64%20-%20sim%20-%20MSAN/builds/17824
Original change's description:
> [objects] Introduce {CodeDataContainer} object type.
>
> This introduces the {CodeDataContainer} as a container for all mutable
> fields associated with a {Code} object. For now only the kind-specific
> flags are moved, but more fields can/will be moved gradually. The goal
> is to make all fields in the {Code} header be immutable eventually.
>
> R=jarin@chromium.org
> BUG=v8:6792
>
> Change-Id: I2eeba893afaba877fb6117e1f18371898c3a175e
> Reviewed-on: https://chromium-review.googlesource.com/732987
> Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
> Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#48902}
TBR=mstarzinger@chromium.org,jarin@chromium.org
Change-Id: I74fe833b074752d640cff4aa4680f250e1bd8780
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:6792
Reviewed-on: https://chromium-review.googlesource.com/738029
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48904}
This introduces the {CodeDataContainer} as a container for all mutable
fields associated with a {Code} object. For now only the kind-specific
flags are moved, but more fields can/will be moved gradually. The goal
is to make all fields in the {Code} header be immutable eventually.
R=jarin@chromium.org
BUG=v8:6792
Change-Id: I2eeba893afaba877fb6117e1f18371898c3a175e
Reviewed-on: https://chromium-review.googlesource.com/732987
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48902}
The tests are generated randomly, using Python's arbitrary-precision
integers as the source of truth.
The generator script is landed as part of this CL. It also supports
a "stress test" mode for on-demand intensive test coverage.
Bug: v8:6791
Change-Id: Idc7a2e90fd8a0a8176283614b33ecd4c3597b1d1
Reviewed-on: https://chromium-review.googlesource.com/731464
Commit-Queue: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48844}
Now that gclient is much quieter about its output (see crbug.com/772741),
these always-emitted messages make it louder than necessary.
Change-Id: I864676c4ca57d4c060f7f58bc770d8d670695639
Reviewed-on: https://chromium-review.googlesource.com/731118
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48808}
Implicitly escape all output that is passed to Log::MessageBuilder.
We escape non-printable characters and the log field separator ','
using the \x00 and \u0000 escape sequences.
Example:
Before: event-foo,"space: ","comma: ,","double quotes: """
After: event-foo,space: ,comma: \x2C,double quotes: "
This might slightly impact human readability of the log files in
extreme cases. However, most strings do not contain any escaped
characters.
Bug:
Change-Id: Ic78f6d9932367d02f9f3c3f70b41b5c283bdf880
Reviewed-on: https://chromium-review.googlesource.com/728332
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Adam Klein <adamk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48805}
And fix the last violations which were introduced since the cleanup CLs
landed.
R=mstarzinger@chromium.org, jgruber@chromium.org
Bug: v8:6837, v8:6921
Change-Id: I317cce06f1e5c2bcdd57283c9c1b75cbe6415cbb
Reviewed-on: https://chromium-review.googlesource.com/727885
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48756}
This ports the build_config json from GN to GYP to prepare deprecating
tedious flags passing to the test runner.
This also removes two unused GN flags that only hold temporary values.
Bug: v8:6917
Change-Id: I976185f1541277dc5c9bfbaa7578f35c19dd254c
Reviewed-on: https://chromium-review.googlesource.com/725706
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Sergiy Byelozyorov <sergiyb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48715}
This reverts commit 4054cf278f.
Reason for revert: Just exposes existing issues.
Original change's description:
> Revert "[test] Fix win-asan symbolizer path"
>
> This reverts commit 135576ffb6.
>
> Reason for revert: V8 Win32 ASAN failures: https://build.chromium.org/p/client.v8/builders/V8%20Win32%20ASAN/builds/73
>
> It appears these failures were lurking there already, but were hidden because of the bug this CL fixed. Opened https://crbug.com/v8/6953 about these issues.
>
> Original change's description:
> > [test] Fix win-asan symbolizer path
> >
> > This makes the symbolizer path relative, as the absolute paths contain
> > a drive letter + colon on windows. The colon is confused by the
> > sanitizer as an option separator.
> >
> > The test driver changes the cwd to the V8 root dir in each
> > invocation.
> >
> > Bug: chromium:726584
> > Change-Id: Icf4e5a55bba5dec8e59a3dfe3eccdf7224e65c33
> > Reviewed-on: https://chromium-review.googlesource.com/721124
> > Reviewed-by: Sergiy Byelozyorov <sergiyb@chromium.org>
> > Commit-Queue: Michael Achenbach <machenbach@chromium.org>
> > Cr-Commit-Position: refs/heads/master@{#48652}
>
> TBR=glider@chromium.org,rnk@chromium.org,machenbach@chromium.org,sergiyb@chromium.org,etienneb@chromium.org
>
> Change-Id: Ic78527950f6a239a03658e042d7244c9781d05db
> No-Presubmit: true
> No-Tree-Checks: true
> No-Try: true
> Bug: chromium:726584
> Reviewed-on: https://chromium-review.googlesource.com/723825
> Reviewed-by: Eric Holk <eholk@chromium.org>
> Commit-Queue: Eric Holk <eholk@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#48653}
TBR=glider@chromium.org,rnk@chromium.org,machenbach@chromium.org,eholk@chromium.org,sergiyb@chromium.org,etienneb@chromium.org
Change-Id: I8ea3b1d74ece09bed4758522f51cbee56a7792e1
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: chromium:726584
Reviewed-on: https://chromium-review.googlesource.com/725319
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48662}
This reverts commit 135576ffb6.
Reason for revert: V8 Win32 ASAN failures: https://build.chromium.org/p/client.v8/builders/V8%20Win32%20ASAN/builds/73
It appears these failures were lurking there already, but were hidden because of the bug this CL fixed. Opened https://crbug.com/v8/6953 about these issues.
Original change's description:
> [test] Fix win-asan symbolizer path
>
> This makes the symbolizer path relative, as the absolute paths contain
> a drive letter + colon on windows. The colon is confused by the
> sanitizer as an option separator.
>
> The test driver changes the cwd to the V8 root dir in each
> invocation.
>
> Bug: chromium:726584
> Change-Id: Icf4e5a55bba5dec8e59a3dfe3eccdf7224e65c33
> Reviewed-on: https://chromium-review.googlesource.com/721124
> Reviewed-by: Sergiy Byelozyorov <sergiyb@chromium.org>
> Commit-Queue: Michael Achenbach <machenbach@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#48652}
TBR=glider@chromium.org,rnk@chromium.org,machenbach@chromium.org,sergiyb@chromium.org,etienneb@chromium.org
Change-Id: Ic78527950f6a239a03658e042d7244c9781d05db
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: chromium:726584
Reviewed-on: https://chromium-review.googlesource.com/723825
Reviewed-by: Eric Holk <eholk@chromium.org>
Commit-Queue: Eric Holk <eholk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48653}
This makes the symbolizer path relative, as the absolute paths contain
a drive letter + colon on windows. The colon is confused by the
sanitizer as an option separator.
The test driver changes the cwd to the V8 root dir in each
invocation.
Bug: chromium:726584
Change-Id: Icf4e5a55bba5dec8e59a3dfe3eccdf7224e65c33
Reviewed-on: https://chromium-review.googlesource.com/721124
Reviewed-by: Sergiy Byelozyorov <sergiyb@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48652}
Change-Id: I77b6eb5e949f8b37fa76d2a161d1ec2c1117ab04
Reviewed-on: https://chromium-review.googlesource.com/722078
Reviewed-by: Adam Klein <adamk@chromium.org>
Commit-Queue: Ben Smith <binji@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48616}
Also fix asan environment for testing on windows.
TBR=sergiyb@chromium.org
Bug: chromium:726584
Change-Id: Ic9e6afa714f4757ad1b0f2ebfa742e742e1c04b9
Reviewed-on: https://chromium-review.googlesource.com/720811
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48583}
Preparation for sharing more code between deopt fuzzer and normal test runner.
Bug: v8:6917
Change-Id: Id8022c7597544ffddf5d1b0a0d73bb4a9d163fc3
Reviewed-on: https://chromium-review.googlesource.com/715417
Commit-Queue: Michał Majewski <majeski@google.com>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48521}
The Scavenger currently requires taking the lock for OLD->NEW processing
and can also take another lock for sweeping a different page.
Since order of pages during scavenge and sweep is unstable this may
result in lock order inversion reports on TSAN when long-running
programms are only executed on a single thread.
The report is a false positve, hence flag it as suppression until we
redesign this particular piece.
No-try: true
Bug: v8:6923
Change-Id: I82355be1c8d83ea61cc21152aeb10b58b1dc4b86
Reviewed-on: https://chromium-review.googlesource.com/716261
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48504}
Currently it's hard to reason about the hung tests on worker processes.
This adds simple output when we're trying to kill a hung process.
Change-Id: Iae5e14dac70a8149c074043dd00cbf10e4d5f3de
Reviewed-on: https://chromium-review.googlesource.com/712455
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48460}
This flag was originally added as a staging mechanism to let us land and test
guard regions without the full trap handler feature landing. Additionally, we
thought we might enable guard regions without trap handlers on some systems.
Trap handlers are now supported, and there's not a real compelling reason for
why we need guard regions without trap handlers. Keeping the separate flag leads
to confusion, since some code treats guard regions and trap handlers the same,
while other code treats them as independent.
Removing this flag and its associated special cases makes everything more
uniform and predictable.
R=gdeepti@chromium.org
Change-Id: Icebab91d1f1e0c55e7a35c75b880085d37fa14ae
Reviewed-on: https://chromium-review.googlesource.com/706570
Reviewed-by: Deepti Gandluri <gdeepti@chromium.org>
Reviewed-by: Mircea Trofin <mtrofin@chromium.org>
Commit-Queue: Eric Holk <eholk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48411}
