This adds OBJECT/SNAPSHOT trace events for Script and SharedFunctionInfo
objects, logging their creation with appropriate information to make
sense of them.
Based on that we introduces five flow events to model the optimized
compilation via tracing in the "disabled-by-default-v8.compile" category:
- "v8.optimizingCompile.start" logs the creation of the
PipelineCompilationJob (for TurboFan JavaScript optimization)
with the "function" argument referring to the trace event
object created for the SharedFunctionInfo.
- "v8.optimzingCompile.prepare" logs the preparation of the
PipelineCompilationJob on the main thread, also carrying the
"function" argument. This connects the flow event to the actual
tracing duration event associated with the preparation phases.
- "v8.optimizingCompile.execute" logs the (usually concurrent)
optimization of the TurboFan graph (again with "function").
- "v8.optimizingCompile.finalize" logs the main thread phase which
finalizes the optimized code and eventually installs it (in case
of success).
- "v8.optimizingCompile.end" signals the end of the
PipelineCompilationJob, which carries the "compilationInfo",
that contains the interesting bits of the OptimizedCompilationInfo,
specifically whether the compile was successfull and which functions
were inlined for example.
This also adds two instant events "V8.AbortOptimization" and
"V8.RetryOptimization" in "disabled-by-default-v8.compile" category
that are emitted when TurboFan cannot optimize a certain function.
In case of "V8.RetryOptimization", TurboFan might be able to optimize
it later, whereas "V8.AbortOptimization" permanently disables the
optimization of a given function. The JSON representation of this is
```js
{
"pid": 256639,
"tid": 256639,
"ts": 6935411377801,
"tts": 159116,
"ph": "I",
"cat": "disabled-by-default-v8.compile",
"name": "V8.AbortOptimization",
"dur": 0,
"tdur": 0,
"args": {
"reason": "Function is too big to be optimized",
"function": {
"id_ref": "0x600000001",
"scope": "v8::internal::SharedFunctionInfo"
}
}
},
```
where the "function" refers to a previously emitted SNAPSHOT for the
function in question. In the trace viewer it will show up as instant
event under "v8.optimizingCompile.prepare" in case of the relevant
example where optimization is disabled due to reaching the bytecode
limit (as in the JSON above), i.e. it'll look something like this
https://i.paste.pics/aafc2de9df10ea8f5acc1a761d80f07b.png
for the example highlighted in the recent blog post
https://ponyfoo.com/articles/javascript-performance-pitfalls-v8
that describes the optimization limit. The "v8.optimizingCompile.end"
duration event will also carry this information as part of the
"compilationInfo" object, but specifically for CI tools, etc. it might
be a whole lot easier to just look for the "V8.AbortOptimization"
instant event.
Bug: v8:8598, v8:9039
Tbr: ulan@chromium.org
Doc: bit.ly/v8-tracing-signals
Change-Id: Ic87ac336004690c65b6b15ad73bc6fbd4b5f12c4
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1511483
Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Peter Marshall <petermarshall@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60448}
This is a reland of 1ca088652d
Original change's description:
> Reland "[regalloc] Introduce deferred fixed ranges"
>
> This is a reland of b176931311
>
> Original change's description:
> > [regalloc] Introduce deferred fixed ranges
> >
> > Fixed ranges are used to express register constraints in the
> > allocator. This change splits these fixed ranges into one for
> > normal code and deferred code. The former are handeled as before
> > whereas the latter are only made visible while allocating
> > registers for deferred code.
> >
> > This prevents forward looking decisions in normal code to be
> > impacted by register constraints from deferred code.
> >
> > Change-Id: I67d562bb41166194e62765d5ab051bc961054fc7
> > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1477742
> > Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
> > Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
> > Reviewed-by: Sigurd Schneider <sigurds@chromium.org>
> > Cr-Commit-Position: refs/heads/master@{#60322}
>
> Change-Id: I1a31150256eb5608db985b144aab7ea457169d0d
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1530810
> Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
> Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#60364}
Change-Id: If4a956716e7e4de132f706be2c395cdfdc04ec94
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1532328
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60408}
This reverts commit 1ca088652d.
Reason for revert: Regressions across the board
Original change's description:
> Reland "[regalloc] Introduce deferred fixed ranges"
>
> This is a reland of b176931311
>
> Original change's description:
> > [regalloc] Introduce deferred fixed ranges
> >
> > Fixed ranges are used to express register constraints in the
> > allocator. This change splits these fixed ranges into one for
> > normal code and deferred code. The former are handeled as before
> > whereas the latter are only made visible while allocating
> > registers for deferred code.
> >
> > This prevents forward looking decisions in normal code to be
> > impacted by register constraints from deferred code.
> >
> > Change-Id: I67d562bb41166194e62765d5ab051bc961054fc7
> > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1477742
> > Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
> > Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
> > Reviewed-by: Sigurd Schneider <sigurds@chromium.org>
> > Cr-Commit-Position: refs/heads/master@{#60322}
>
> Change-Id: I1a31150256eb5608db985b144aab7ea457169d0d
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1530810
> Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
> Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#60364}
TBR=jarin@chromium.org,sigurds@chromium.org,herhut@chromium.org
Change-Id: Id8ad6c39774e38dd67decea997e08a4c58c452ec
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1532327
Reviewed-by: Sigurd Schneider <sigurds@chromium.org>
Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60381}
This is a reland of b176931311
Original change's description:
> [regalloc] Introduce deferred fixed ranges
>
> Fixed ranges are used to express register constraints in the
> allocator. This change splits these fixed ranges into one for
> normal code and deferred code. The former are handeled as before
> whereas the latter are only made visible while allocating
> registers for deferred code.
>
> This prevents forward looking decisions in normal code to be
> impacted by register constraints from deferred code.
>
> Change-Id: I67d562bb41166194e62765d5ab051bc961054fc7
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1477742
> Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
> Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
> Reviewed-by: Sigurd Schneider <sigurds@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#60322}
Change-Id: I1a31150256eb5608db985b144aab7ea457169d0d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1530810
Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60364}
Change-Id: I7716dab4d6d0ff582acdffb988a05429bccab2ad
Reviewed-on: https://chromium-review.googlesource.com/c/1462006
Commit-Queue: Georg Neis <neis@chromium.org>
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59554}
This is a reland of 4e1d7c87b9.
Failure on arm and arm64 is fixed by https://crrev.com/c/1411885.
Original change's description:
> [wasm] Split compilation in three stages
>
> In order to refactor ownership between objects in wasm compilation, the
> compilation (executed by background tasks) is split in three stages:
> getting a compilation unit (while holding a mutex), executing the work
> (without any mutex and without keeping the NativeModule alive), and
> submitting the work (with a mutex again).
>
> This CL prepares this design by splitting compilation from submission.
> Both steps are still executed right after each other. This will be
> changed in a follow-up CL.
>
> R=titzer@chromium.org
> CC=mstarzinger@chromium.org
>
> Bug: v8:8689
> Change-Id: I2f92aee8e2f2d45470d8c63314ed026341630902
> Reviewed-on: https://chromium-review.googlesource.com/c/1414920
> Reviewed-by: Ben Titzer <titzer@chromium.org>
> Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#58929}
TBR=titzer@chromium.org
Bug: v8:8689
Change-Id: I58ff07d0e0ac8df0f6ee23c416f992954f4673d2
Reviewed-on: https://chromium-review.googlesource.com/c/1422748
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#58959}
This reverts commit 4e1d7c87b9.
Reason for revert:
https://ci.chromium.org/p/v8/builders/luci.v8.ci/V8%20Linux%20-%20arm%20-%20sim%20-%20debug/14986
Original change's description:
> [wasm] Split compilation in three stages
>
> In order to refactor ownership between objects in wasm compilation, the
> compilation (executed by background tasks) is split in three stages:
> getting a compilation unit (while holding a mutex), executing the work
> (without any mutex and without keeping the NativeModule alive), and
> submitting the work (with a mutex again).
>
> This CL prepares this design by splitting compilation from submission.
> Both steps are still executed right after each other. This will be
> changed in a follow-up CL.
>
> R=titzer@chromium.org
> CC=mstarzinger@chromium.org
>
> Bug: v8:8689
> Change-Id: I2f92aee8e2f2d45470d8c63314ed026341630902
> Reviewed-on: https://chromium-review.googlesource.com/c/1414920
> Reviewed-by: Ben Titzer <titzer@chromium.org>
> Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#58929}
TBR=titzer@chromium.org,clemensh@chromium.org
Change-Id: Ic3d0287b354ef5f834b76bc2cdc096d2231f4477
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:8689
Reviewed-on: https://chromium-review.googlesource.com/c/1422917
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#58932}
In order to refactor ownership between objects in wasm compilation, the
compilation (executed by background tasks) is split in three stages:
getting a compilation unit (while holding a mutex), executing the work
(without any mutex and without keeping the NativeModule alive), and
submitting the work (with a mutex again).
This CL prepares this design by splitting compilation from submission.
Both steps are still executed right after each other. This will be
changed in a follow-up CL.
R=titzer@chromium.orgCC=mstarzinger@chromium.org
Bug: v8:8689
Change-Id: I2f92aee8e2f2d45470d8c63314ed026341630902
Reviewed-on: https://chromium-review.googlesource.com/c/1414920
Reviewed-by: Ben Titzer <titzer@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#58929}
This is a reland of f849396c3a
Original change's description:
> [nojit] Remove code stubs
>
> All stubs have been migrated to builtins. This CL removes most related
> code.
>
> Bug: v8:7777, v8:5784
> Change-Id: I4470cfef34788e6c8e0fd5fd09e40e250d088dad
> Reviewed-on: https://chromium-review.googlesource.com/c/1365284
> Commit-Queue: Jakob Gruber <jgruber@chromium.org>
> Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
> Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
> Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
> Reviewed-by: Yang Guo <yangguo@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#58093}
Tbr: mstarzinger@chromium.org,yangguo@chromium.org,jkummerow@chromium.org,bmeurer@chromium.org
Bug: v8:7777, v8:5784
Change-Id: I005ee2a820d49a75a90481d262a310e4ccfd1391
Reviewed-on: https://chromium-review.googlesource.com/c/1367746
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#58101}
All stubs have been migrated to builtins. This CL removes most related
code.
Bug: v8:7777, v8:5784
Change-Id: I4470cfef34788e6c8e0fd5fd09e40e250d088dad
Reviewed-on: https://chromium-review.googlesource.com/c/1365284
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#58093}
With BytecodeArray flushing the SFI->BytecodeArray pointer will become pseudo weak.
In order to avoid having to recompile (and potentially stack-overflow) on
deoptimization, we explicitly add strong references to any BytecodeArray's we
might deopt into into the DeoptimizationData, as such the BytecodeArrays won't
be flushed while there is optimized code referencing it.
BUG=v8:8395
Change-Id: If3336dfa9c17b7bccafdb73752c58dfa1f14a371
Reviewed-on: https://chromium-review.googlesource.com/c/1314579
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#57543}
With Bytecode flushing, the a SharedFunctionInfo's bytecode might be flushed
while the compiler is expecting it to still exist. Rather than continually
getting the bytecode from the SFI, instead bottleneck the points where we get
BytecodeArray from SFIs and maintain an explicit strong reference to the
BytecodeArray from that point onwards to prevent flushing.
BUG=v8:8395
Change-Id: I6a18adec99402838690971eb37ee0617cdc15920
Reviewed-on: https://chromium-review.googlesource.com/c/1309763
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#57536}
This mostly pushes code around (from the two specialized public ctors
to the ConfigureFlags method), but does include one behavioral change
in that all builtins/stubs/handlers now disables switch jump tables.
Bug: v8:6666
Change-Id: I801d5bdc7a9c4bcc3bc5eb467a7c049404ffaff0
Reviewed-on: https://chromium-review.googlesource.com/1201785
Reviewed-by: Stephan Herhut <herhut@chromium.org>
Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55652}
The WasmCompilationData was a struct that served as an input/output
mechanism for communicating with the code generator. In particular,
it contained a flag for enabling runtime exception for WASM in the code
generator and it also gathered the protected instruction info from
the code generator to be communicated to the WasmCodeManager.
This CL inlines the exception support flag into OptimizedCompilationInfo
and the protected instruction information into the code generator,
along the lines of other flags and data structures created by the
code generator.
R=mstarzinger@chromium.org
Change-Id: If436636067f1a829a095310a73045fe3301cb694
Reviewed-on: https://chromium-review.googlesource.com/1186409
Commit-Queue: Ben Titzer <titzer@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55358}
- Move the CompilationDependencies member of OptimizedCompilationInfo
to Turbofan's PipelineData (and thus into the compiler namespace).
- Move compilation-dependencies.{cc,h} to the compiler directory.
Bug: v8:7902
Change-Id: I5471d0923daf83abe975357325db5bc5ad0a8571
Reviewed-on: https://chromium-review.googlesource.com/1127793
Commit-Queue: Georg Neis <neis@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54295}
This is a reland of 4b9b9b6845, which
accidentally disabled optimization after dependency changes (instead
of retrying).
TBR=jarin@chromium.orgTBR=mstarzinger@chromium.org
Original change's description:
> Reland "[turbofan] Rewrite CompilationDependencies"
>
> This is a reland of 52a10e5081, after
> eliminating an invalid assumption about maps.
>
> TBR=jarin@chromium.org
> TBR=mstarzinger@chromium.org
>
> Original change's description:
> > [turbofan] Rewrite CompilationDependencies
> >
> > Instead of installing code dependencies during graph reduction,
> > install them after code generation.
> >
> > Bug: v8:7902, v8:7790
> > Change-Id: I8a3798254abb5b9ec7c295a1592aeb6b51f24c7a
> > Reviewed-on: https://chromium-review.googlesource.com/1119913
> > Commit-Queue: Georg Neis <neis@chromium.org>
> > Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
> > Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
> > Cr-Commit-Position: refs/heads/master@{#54170}
>
> Bug: v8:7902, v8:7790
> Change-Id: I9cbaf98980379b9b17464af5952ec0c47e1cdc6f
> Reviewed-on: https://chromium-review.googlesource.com/1126999
> Reviewed-by: Georg Neis <neis@chromium.org>
> Commit-Queue: Georg Neis <neis@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#54254}
Bug: v8:7902, v8:7790
Change-Id: I2b7a7d186e03990350e375470569177e3309683c
Reviewed-on: https://chromium-review.googlesource.com/1127579
Commit-Queue: Georg Neis <neis@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54280}
This is a reland of 52a10e5081, after
eliminating an invalid assumption about maps.
TBR=jarin@chromium.orgTBR=mstarzinger@chromium.org
Original change's description:
> [turbofan] Rewrite CompilationDependencies
>
> Instead of installing code dependencies during graph reduction,
> install them after code generation.
>
> Bug: v8:7902, v8:7790
> Change-Id: I8a3798254abb5b9ec7c295a1592aeb6b51f24c7a
> Reviewed-on: https://chromium-review.googlesource.com/1119913
> Commit-Queue: Georg Neis <neis@chromium.org>
> Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
> Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#54170}
Bug: v8:7902, v8:7790
Change-Id: I9cbaf98980379b9b17464af5952ec0c47e1cdc6f
Reviewed-on: https://chromium-review.googlesource.com/1126999
Reviewed-by: Georg Neis <neis@chromium.org>
Commit-Queue: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54254}
Instead of installing code dependencies during graph reduction,
install them after code generation.
Bug: v8:7902, v8:7790
Change-Id: I8a3798254abb5b9ec7c295a1592aeb6b51f24c7a
Reviewed-on: https://chromium-review.googlesource.com/1119913
Commit-Queue: Georg Neis <neis@chromium.org>
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54170}
But for builtins, jump tables are disabled
to be compatible with embedded builtins.
This is a reland of 884bec9f70
Original change's description:
> [turbofan] enable switch jump tables with --no-untrusted-code-mitigations,
> also for stubs and Wasm
>
> Bug: chromium:845851
> Change-Id: I9b860dc26f8b35d629235b82fc5fffe04bf10493
> Reviewed-on: https://chromium-review.googlesource.com/1076151
> Commit-Queue: Tobias Tebbi <tebbi@chromium.org>
> Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
> Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#53525}
Bug: chromium:845851
Change-Id: I66c300f875a46a3f2a68730fda94b8196f38aa97
Reviewed-on: https://chromium-review.googlesource.com/1087468
Commit-Queue: Tobias Tebbi <tebbi@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#53612}
also for stubs and Wasm
Bug: chromium:845851
Change-Id: I9b860dc26f8b35d629235b82fc5fffe04bf10493
Reviewed-on: https://chromium-review.googlesource.com/1076151
Commit-Queue: Tobias Tebbi <tebbi@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#53525}
This moves the generation of the WasmCode structure into the
PipelineWasmCompilationJob, removing WasmCodeDesc in the process.
WasmCodeDesc was a structure that was not understood by other parts of
the compiler, including the disassembler. Using WasmCode right away
enables printing code comments for turbolizer.
Change-Id: Ie5cca131829bc842c51c999ea14d0dc339b3e028
Reviewed-on: https://chromium-review.googlesource.com/1073312
Commit-Queue: Stephan Herhut <herhut@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#53490}
This adds a filter option for --trace-turbo, --trace-turbo-graph
and --trace-turbo-scheduled. The filter is a pattern that matches
function names in this way:
"*" all; the default
"-" all but the top-level function
"-name" all but the function "name"
"" only the top-level function
"name" only the function "name"
"name*" only functions starting with "name"
"~" none; the tilde is not an identifier
Bug: v8:7761
Change-Id: I7e8e726023f2c72754b0dd691d790af20b022fd3
Reviewed-on: https://chromium-review.googlesource.com/1059774
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
Cr-Commit-Position: refs/heads/master@{#53201}
The idea is to mark all the branches and loads participating in array
bounds checks, and let them contribute-to/use the poisoning register.
In the code, the marks for array indexing operations now contain
"Critical" in their name. By default (--untrusted-code-mitigations),
we only instrument the "critical" operations with poisoning.
With that in place, we also remove the array masking approach based
on arithmetic.
Since we do not propagate the poison through function calls,
we introduce a node for poisoning an index that is passed through
function call - the typical example is the bounds-checked index
that is passed to the CharCodeAt builtin.
Most of the code in this CL is threads through the three levels of
protection (safe, critical, unsafe) for loads, branches and flags.
Bug: chromium:798964
Change-Id: Ief68e2329528277b3ba9156115b2a6dcc540d52b
Reviewed-on: https://chromium-review.googlesource.com/995413
Commit-Queue: Jaroslav Sevcik <jarin@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#52883}
With the Ignition + Turbofan pipeline there is very little overlap between the data
needed for unoptimized compilation and optimized compilation. As a result, it is
cleaner to split up the CompilationInfo into UnoptimizedCompilationInfo and
OptimizedCompilationInfo.
Doing so also necessitate splitting up CompilationJob into UnoptimizedCompilationJob
and OptimizedCompilationJob - again there is not much overlap so this seems cleaner.
Change-Id: I1056ad520937b7f8582e4fc3ca8f4910742de30a
Reviewed-on: https://chromium-review.googlesource.com/995895
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#52369}
