I know the bug has been closed but this seems like a simple addition that may
be useful in other ways as well.
BUG=v8:2180
LOG=N
Review URL: https://codereview.chromium.org/1128553002
Cr-Commit-Position: refs/heads/master@{#28261}
typeof was implemented as a runtime function. Calling it in
optimized code with a non-constant input becomes burdensome.
BUG=
Review URL: https://codereview.chromium.org/1114563003
Cr-Commit-Position: refs/heads/master@{#28260}
This revives the Terminate operator and removes the weird Always
operator. As a first step we let the ControlReducer connect non
terminating loops via Terminate. The next step will be to change the
graph builder to insert Terminate nodes into every loop.
Review URL: https://codereview.chromium.org/1123213002
Cr-Commit-Position: refs/heads/master@{#28259}
The Hydrogen representation for binops was never changed to care about the
language mode. We thought this was ok, but it turns out we need to keep track
of it to make sure inlining doesn't mess with the "strongness" of binops.
Also added more rigorous inlining testing.
BUG=v8:3956
LOG=N
Review URL: https://codereview.chromium.org/1123043002
Cr-Commit-Position: refs/heads/master@{#28253}
long and trivial functions, so that they can be eagerly compiled after all.
This essentially allows the parser to renege on its earlier decision to
lazy-parse, if additional information suggests it was a bad decision.
BUG=chromium:470930
LOG=Y
Review URL: https://codereview.chromium.org/1102523003
Cr-Commit-Position: refs/heads/master@{#28252}
An AdvancedReducer is basically a regular Reducer with an editor
that can perform graph editing operations beyond changing or
replacing the node that is currently being reduced. The GraphReducer
is the default implementation of the AdvancedReducer::Editor interface.
The ControlReducerImpl is now just an AdvancedReducer, which
temporarily requires a Finish method in the reducer to implement
the dead node trimming until we move that to the GraphReducer
(which in turn requires that all loops are connected to End).
Review URL: https://codereview.chromium.org/1122423003
Cr-Commit-Position: refs/heads/master@{#28251}
port cf53fed972 (r28242).
original commit message:
ArgumentsAdaptorStub for derived constructor (the one that needs
new.target) works in this way:
- If the constructor is invoked via the Construct stub, we know that
actual arguments always include new.target. ``arguments`` object
however should not include a new.target, therefore we remove it.
We achieve this by decrementing the argument count.
- If the constructor is invoked as a call, we do not care for a correct
``arguments`` array since the constructor will immediately throw on
entrance.
The bug is that the call could actually pass 0 actual arguments, but I
decrement unconditionally :(. The fix is to detect this case and avoid
decrementing. ``arguments`` is bogus, but it is ok as constructor
throws.
Long-term we should just remove mucking about with arguments for
new.target and just get it from the stack.
BUG=
Review URL: https://codereview.chromium.org/1124063002
Cr-Commit-Position: refs/heads/master@{#28246}
"RunAllocate" test case is added in d6945db7. it invokes Linkage::GetStubCallDescriptor
which is unimplemented for turbofan unsupported platform.
BUG=
Review URL: https://codereview.chromium.org/1129483003
Cr-Commit-Position: refs/heads/master@{#28244}
As part of the migration from GYP->GN, we want to make sure that we
can track when new targets are added to either the GYP or GN builds
and that we are building everything we expect to build.
In GN, unlike GYP, if a build file gets referenced from other files,
building 'all' will cause every target to be built in it. This means in
particular, that we can end up trying to build targets that are not
necessarily intended to be visible to the rest of the build. To get
around this, any target that is defined but hidden (like 'v8_snapshot',
in V8's case) should still be visible to a top-level target called
"//:gn_visibility".
R=brettw@chromium.org, machenbach@chromium.org
BUG=461019
LOG=N
Review URL: https://codereview.chromium.org/1120093005
Cr-Commit-Position: refs/heads/master@{#28243}
ArgumentsAdaptorStub for derived constructor (the one that needs
new.target) works in this way:
- If the constructor is invoked via the Construct stub, we know that
actual arguments always include new.target. ``arguments`` object
however should not include a new.target, therefore we remove it.
We achieve this by decrementing the argument count.
- If the constructor is invoked as a call, we do not care for a correct
``arguments`` array since the constructor will immediately throw on
entrance.
The bug is that the call could actually pass 0 actual arguments, but I
decrement unconditionally :(. The fix is to detect this case and avoid
decrementing. ``arguments`` is bogus, but it is ok as constructor
throws.
Long-term we should just remove mucking about with arguments for
new.target and just get it from the stack.
R=arv@chromium.org,rossberg@chromium.org
BUG=chromium:474783
LOG=Y
Review URL: https://codereview.chromium.org/1126783003
Cr-Commit-Position: refs/heads/master@{#28242}
Improve d26f5d3923
Original commit message:
When comparing a symbol to istself using <, <=, > or >= we need to
throw a TypeError. This is correctly handled in the runtime function
so if we are comparing a symbol fall back to use the runtime.
BUG=
Review URL: https://codereview.chromium.org/1124863004
Cr-Commit-Position: refs/heads/master@{#28240}
Port d21de2a48b
Original commit message:
Tail calls are matched on the graph, with a dedicated tail call
optimization that is actually testable. The instruction selection can
still fall back to a regular if the platform constraints don't allow to
emit a tail call (i.e. the return locations of caller and callee differ
or the callee takes non-register parameters, which is a restriction that
will be removed in the future).
Also explicitly limit tail call optimization to stubs for now and drop
the global flag.
R=dstence@us.ibm.com, michael_dawson@ca.ibm.com
BUG=
Review URL: https://codereview.chromium.org/1114193003
Cr-Commit-Position: refs/heads/master@{#28239}
Reason for revert:
nosnap failures
Original issue's description:
> Resolve references to "this" the same way as normal variables
>
> Make the parser handle references to "this" as unresolved variables, so the
> same logic as for the rest of function parameters is used for the receiver.
> Minor additions to the code generation handle copying the receiver to the
> context, along with the rest of the function parameters.
>
> Based on work by Adrian Perez de Castro <aperez@igalia.com>.
>
> BUG=
> LOG=N
>
> Committed: https://crrev.com/18619d355192e2699203d12d9ebb9caea107b693
> Cr-Commit-Position: refs/heads/master@{#28236}
TBR=rossberg@chromium.org,mstarzinger@chromium.org,dslomov@chromium.org,adamk@chromium.org,arv@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=
Review URL: https://codereview.chromium.org/1113133006
Cr-Commit-Position: refs/heads/master@{#28238}
Reason for revert:
All sorts of performance regressions
Original issue's description:
> Collect type feedback on result of Math.[round|ceil|floor]
>
> By recording invocations of these builtins that can return -0, we now learn to not emit Crankshaft code that only handles integer results, avoiding deopt loops.
>
> Committed: https://crrev.com/f36ecaf3a4d61568ca50a20718acce7dd5da9a5f
> Cr-Commit-Position: refs/heads/master@{#28215}
TBR=mvstanton@chromium.org,bmeurer@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
Review URL: https://codereview.chromium.org/1115973005
Cr-Commit-Position: refs/heads/master@{#28237}
Make the parser handle references to "this" as unresolved variables, so the
same logic as for the rest of function parameters is used for the receiver.
Minor additions to the code generation handle copying the receiver to the
context, along with the rest of the function parameters.
Based on work by Adrian Perez de Castro <aperez@igalia.com>.
BUG=
LOG=N
Review URL: https://codereview.chromium.org/1097283003
Cr-Commit-Position: refs/heads/master@{#28236}
When comparing a symbol to istself using <, <=, > or >= we need to
throw a TypeError. This is correctly handled in the runtime function
so if we are comparing a symbol fall back to use the runtime.
BUG=v8:4073
LOG=Y
R=rossberg@chromium.org
Review URL: https://codereview.chromium.org/1125783002
Cr-Commit-Position: refs/heads/master@{#28226}
Tail calls are matched on the graph, with a dedicated tail call
optimization that is actually testable. The instruction selection can
still fall back to a regular if the platform constraints don't allow to
emit a tail call (i.e. the return locations of caller and callee differ
or the callee takes non-register parameters, which is a restriction that
will be removed in the future).
Also explicitly limit tail call optimization to stubs for now and drop
the global flag.
BUG=v8:4076
LOG=n
Review URL: https://codereview.chromium.org/1114163005
Cr-Commit-Position: refs/heads/master@{#28219}
By recording invocations of these builtins that can return -0, we now learn to not emit Crankshaft code that only handles integer results, avoiding deopt loops.
Review URL: https://codereview.chromium.org/1053143005
Cr-Commit-Position: refs/heads/master@{#28215}
These macros are not needed anymore, so there's no point in supporting
them.
Review URL: https://codereview.chromium.org/1123723003
Cr-Commit-Position: refs/heads/master@{#28214}
When we preprocess stack traces, we turn code pointer and offset to
source position, and store it in place of code pointer as smi.
Preprocessing stack traces is currently disabled due to issue 4065.
R=jkummerow@chromium.org
Review URL: https://codereview.chromium.org/1125723002
Cr-Commit-Position: refs/heads/master@{#28213}
