With --wasm-trace-memory, both compiled code and the interpreter will
output each memory load or store. This helps to debug miscompilations in
emscripten or in V8, like the referenced bug.
R=titzer@chromium.org
Bug: chromium:718858
Change-Id: I90704d164975b11c65677f86947ab102242d5153
Reviewed-on: https://chromium-review.googlesource.com/684316
Reviewed-by: Ben Titzer <titzer@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48255}
This flag allows invalid escape sequences in tagged templates, which is
a stage-4 TC39 proposal shipping in other browsers.
Bug: v8:5546
Cq-Include-Trybots: master.tryserver.v8:v8_linux_noi18n_rel_ng
Change-Id: I3e7c374c9b547f62d5976f76a7208d05fe9decf8
Reviewed-on: https://chromium-review.googlesource.com/581885
Commit-Queue: Kevin Gibbons <bakkot@gmail.com>
Reviewed-by: Adam Klein <adamk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47584}
Currently, Declaration stores a Scope pointer to whichever Scope the
declaration appeared in. This is used to disallow var declarations
being hoisted over lexical declarations. For example:
{
let x;
{ var x; }
}
But in fact this is the only sort of case where storing the scope
is required: for lexical declarations (including function declarations
appearing in blocks), Declaration::scope() was always identical to
Declaration::proxy()->var()->scope(). That is, only var declarations
end up "nested" in this way.
This patch adds a subclass of VariableDeclaration to store the Scope.
Since the only thing that cares about that data is Scope analysis,
this isn't treated as a distinct AstNode::NodeType from VariableDeclaration,
leaving all AstVisitors untouched in the process.
Also reworked the logic in Scope::CheckConflictingVarDeclarations() for
clarity after making changes to accomodate the new code.
Change-Id: I6ee4298700508ab9e28a76ddb8504bae68bc473f
Reviewed-on: https://chromium-review.googlesource.com/619595
Commit-Queue: Adam Klein <adamk@chromium.org>
Reviewed-by: Marja Hölttä <marja@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47441}
The patch changes CallPrinter's AST traversal to continue even after
the first positive match for an AST node. This helps us check for the
subsequent GetIterator AST node in case of destructuring.
We can not differentiate between the function call failing and the
GetIterator failing based on source position info. This would involve
runtime checks costing performance.
Instead of providing an incorrect error, we provide both the
possiblities to user and allow them to disambiguate.
Previously,
d8> function f() { return 5; }
undefined
d8> var [a] = f();
(d8):1: TypeError: f is not a function
var [a] = f();
^
TypeError: f is not a function
at (d8):1:11
Now,
d8> function f() { return 5; }
undefined
d8> var [a] = f();
(d8):1: TypeError: f is not a function or its return value is not iterable
var [a] = f();
^
TypeError: f is not a function or its return value is not iterable
at (d8):1:11
Bug: v8:6616, v8:6513
Change-Id: I3d6427f10cae54951b0ad0e5ddcbe802bb7191c1
Reviewed-on: https://chromium-review.googlesource.com/594894
Commit-Queue: Sathya Gunasekaran <gsathya@chromium.org>
Reviewed-by: Adam Klein <adamk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47025}
Before we try to do ASI and fail with a generic error, we special case
for the await token in the failure case.
Bug: v8:6572, v8:6513
Change-Id: Ia050c98b5a5b20bc326f429a367635b8553e4112
Reviewed-on: https://chromium-review.googlesource.com/582210
Reviewed-by: Daniel Ehrenberg <littledan@chromium.org>
Commit-Queue: Sathya Gunasekaran <gsathya@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46885}
Previously,
➜ v8 (master) ✔ ./out.gn/x64.optdebug/d8
V8 version 6.1.0 (candidate)
d8> var x = undefined
undefined
d8> var [a] = x
(d8):1: TypeError: Cannot read property 'Symbol(Symbol.iterator)' of undefined
var [a] = x
^
TypeError: Cannot read property 'Symbol(Symbol.iterator)' of undefined
at (d8):1:11
Now,
➜ v8 (fix-iterator) ✔ ./out.gn/x64.optdebug/d8
V8 version 6.1.0 (candidate)
d8> var x = undefined
undefined
d8> var [a] = x
(d8):1: TypeError: x is not iterable
var [a] = x
^
TypeError: x is not iterable
at (d8):1:11
Bug: v8:6599, v8:6513
Change-Id: I71287a19166af0289e8f7708b8f41ad003ae87ae
Reviewed-on: https://chromium-review.googlesource.com/571175
Commit-Queue: Sathya Gunasekaran <gsathya@chromium.org>
Reviewed-by: Adam Klein <adamk@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46723}
Only allow BindingIdentifier in BindingRestPattern and
ValidReferenceExpression in AssignmentRestPattern.
Also updated to a better, actionable error message.
Bug: v8:6500, v8:6513
Cq-Include-Trybots: master.tryserver.v8:v8_linux_noi18n_rel_ng
Change-Id: Ifaba2f85c20bc20e263267e8c76d50a27075b87d
Reviewed-on: https://chromium-review.googlesource.com/550559
Commit-Queue: Sathya Gunasekaran <gsathya@chromium.org>
Reviewed-by: Adam Klein <adamk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46653}
This is a reland of 5b44ba0e34
Original change's description:
> (Reland) [parser] moved load property position after dot
>
> Currently LdaNamedProperty bytecode for expressions like a.b has position before dot. This CL moves this location after dot.
> It's important for later removing of Nop bytecodes in expressions like a.b() where a is local variable, property call and property load should have the same position.
>
> R=jgruber@chromium.org
> TBR=marja@chromium.org
>
> Bug: v8:6425
> Change-Id: I05c21ca5e018da9c432c6bc963c7a96799336d1c
> Reviewed-on: https://chromium-review.googlesource.com/562879
> Commit-Queue: Aleksey Kozyatinskiy <kozyatinskiy@chromium.org>
> Reviewed-by: Jakob Gruber <jgruber@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#46484}
TBR=marja@chromium.org,jgruber@chromium.org
Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng
Bug: v8:6425
Change-Id: I5eba5fe43ad31c5c781ffcc8c604cd9c98baa57e
Reviewed-on: https://chromium-review.googlesource.com/565907
Reviewed-by: Aleksey Kozyatinskiy <kozyatinskiy@chromium.org>
Commit-Queue: Aleksey Kozyatinskiy <kozyatinskiy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46542}
This reverts commit 5b44ba0e34.
Reason for revert: Layout tests:
https://build.chromium.org/p/client.v8.fyi/builders/V8-Blink%20Linux%2064/builds/16841
Original change's description:
> (Reland) [parser] moved load property position after dot
>
> Currently LdaNamedProperty bytecode for expressions like a.b has position before dot. This CL moves this location after dot.
> It's important for later removing of Nop bytecodes in expressions like a.b() where a is local variable, property call and property load should have the same position.
>
> R=jgruber@chromium.org
> TBR=marja@chromium.org
>
> Bug: v8:6425
> Change-Id: I05c21ca5e018da9c432c6bc963c7a96799336d1c
> Reviewed-on: https://chromium-review.googlesource.com/562879
> Commit-Queue: Aleksey Kozyatinskiy <kozyatinskiy@chromium.org>
> Reviewed-by: Jakob Gruber <jgruber@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#46484}
TBR=kozyatinskiy@chromium.org,jgruber@chromium.org
Change-Id: If9d5fa5f46ed10a407559e9cf10d2a6a54dbe163
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:6425
Reviewed-on: https://chromium-review.googlesource.com/564418
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46491}
Currently LdaNamedProperty bytecode for expressions like a.b has position before dot. This CL moves this location after dot.
It's important for later removing of Nop bytecodes in expressions like a.b() where a is local variable, property call and property load should have the same position.
R=jgruber@chromium.orgTBR=marja@chromium.org
Bug: v8:6425
Change-Id: I05c21ca5e018da9c432c6bc963c7a96799336d1c
Reviewed-on: https://chromium-review.googlesource.com/562879
Commit-Queue: Aleksey Kozyatinskiy <kozyatinskiy@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46484}
Print the object that is being destructured and update the error
message.
Previously,
d8> var [a] = {}
(d8):1: TypeError: [Symbol.iterator] is not a function
Now,
d8> var [a] = {}
(d8):1: TypeError: {} is not iterable
Bug: v8:6513, v8:5532
Change-Id: I5cbfe7c7e20632bce1a48bd38a1b0c98d0ff0660
Reviewed-on: https://chromium-review.googlesource.com/557370
Commit-Queue: Sathya Gunasekaran <gsathya@chromium.org>
Reviewed-by: Adam Klein <adamk@chromium.org>
Reviewed-by: Caitlin Potter <caitp@igalia.com>
Cr-Commit-Position: refs/heads/master@{#46457}
This reverts commit 96698b55e0.
Reason for revert: This patch was correct when it landed, but later,
the spec was changed to V8's old behavior in
https://github.com/tc39/ecma262/pull/885 .
Original change's description:
> [parser] allow ASI when "await" or "yield" follows "let"
>
> Per https://github.com/tc39/test262/pull/956, André believes that ASI
> should be permitted in these situations.
>
> BUG=
> R=marja@chromium.org, adamk@chromium.org, littledan@chromium.org
>
> Change-Id: I5602d8a507576607750ffa9e873e1bfa53dd3523
> Reviewed-on: https://chromium-review.googlesource.com/472568
> Reviewed-by: Marja Hölttä <marja@chromium.org>
> Commit-Queue: Caitlin Potter <caitp@igalia.com>
> Cr-Commit-Position: refs/heads/master@{#44585}
TBR=adamk@chromium.org,marja@chromium.org,littledan@chromium.org,caitp@igalia.com
# Not skipping CQ checks because original CL landed > 1 day ago.
Change-Id: I2c5bf709867da539ccd4cd82f3be98c8a0301f31
Reviewed-on: https://chromium-review.googlesource.com/553617
Reviewed-by: Adam Klein <adamk@chromium.org>
Commit-Queue: Daniel Ehrenberg <littledan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46317}
This reverts commit 217d654c9b.
Reason for revert: Changes layout tests:
https://build.chromium.org/p/client.v8.fyi/builders/V8-Blink%20Linux%2064/builds/16520
Original change's description:
> [parser] moved load property position after dot
>
> Currently LdaNamedProperty bytecode for expressions like a.b has position before dot. This CL moves this location after dot.
> It's important for later removing of Nop bytecodes in expressions like a.b() where a is local variable, property call and property load should have the same position.
>
> R=jgruber@chromium.org
>
> Bug: v8:6425
> Change-Id: I528c5007de52215beba80851ab04693ecec038e2
> Reviewed-on: https://chromium-review.googlesource.com/543047
> Reviewed-by: Marja Hölttä <marja@chromium.org>
> Reviewed-by: Jakob Gruber <jgruber@chromium.org>
> Commit-Queue: Aleksey Kozyatinskiy <kozyatinskiy@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#46163}
TBR=marja@chromium.org,kozyatinskiy@chromium.org,jgruber@chromium.org
Change-Id: I94543526f39f0a20452fbce1a7bc6744cac66621
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:6425
Reviewed-on: https://chromium-review.googlesource.com/544993
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46171}
Currently LdaNamedProperty bytecode for expressions like a.b has position before dot. This CL moves this location after dot.
It's important for later removing of Nop bytecodes in expressions like a.b() where a is local variable, property call and property load should have the same position.
R=jgruber@chromium.org
Bug: v8:6425
Change-Id: I528c5007de52215beba80851ab04693ecec038e2
Reviewed-on: https://chromium-review.googlesource.com/543047
Reviewed-by: Marja Hölttä <marja@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Aleksey Kozyatinskiy <kozyatinskiy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46163}
This patch updates the error positition and the error msg.
Previously,
→ ./out.gn/x64.release/d8 test.js
test.js:1: TypeError: undefined is not a function
var [a] = {};
^
TypeError: undefined is not a function
at test.js:1:1
With this patch,
→ ./out.gn/x64.release/d8 test.js
test.js:1: TypeError: [Symbol.iterator] is not a function
var [a] = {};
^
TypeError: [Symbol.iterator] is not a function
at test.js:1:11
Bug: v8:5532
Change-Id: Ib066e8ec8a53fdf06cce491bde4b1d0c6d564cbc
Reviewed-on: https://chromium-review.googlesource.com/539024
Reviewed-by: Adam Klein <adamk@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Commit-Queue: Sathya Gunasekaran <gsathya@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46015}
This removes the heuristic from {JSStackFrame::IsConstructor} that tried
to infer whether a frame was called as a constructor or not from the
receiver value. We are now carrying along the appropriate bit derived
from the frame type instead.
R=jgruber@chromium.org
TEST=message/regress/regress-5727
BUG=v8:5727
Change-Id: I0e2f1d0f95485c84c4ebcd3cbfe0123c6afd2e01
Reviewed-on: https://chromium-review.googlesource.com/500313
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45972}
Previously, when destructuring against null or undefined we would
print:
d8> var { x } = null
(d8):1: TypeError: Cannot match against 'undefined' or 'null'.
var { x } = null
^
TypeError: Cannot match against 'undefined' or 'null'.
at (d8):1:1
The above message uses the term "match" which isn't a common term in
JavaScript to describe destructuring. This message also doesn't
provide the name of the property that fails destructuring.
This patch changes the error message to be:
d8> var { x } = null;
(d8):1: TypeError: Cannot destructure property `x` of 'undefined' or 'null'.
var { x } = null;
^
TypeError: Cannot destructure property `x` of 'undefined' or 'null'.
at (d8):1:1
This patch changes the message to say "destructure" instead of "match".
This patch adds support for printing property names that are string
literals. We iterate through every property and pick the first string
literal property name if it exists. This provides at least some
feedback to the developer.
This patch also makes the pointer point to the position of the
property name that fails destructuring.
For computed and numeric property names, we print a generic error:
d8> var { 1: x } = null
(d8):1: TypeError: Cannot destructure against 'undefined' or 'null'.
var { 1: x } = null
^
TypeError: Cannot destructure against 'undefined' or 'null'.
at (d8):1:1
Bug: v8:6499
Change-Id: I35b1ac749489828686f042975294b9926e2dfc53
Reviewed-on: https://chromium-review.googlesource.com/537341
Reviewed-by: Adam Klein <adamk@chromium.org>
Commit-Queue: Sathya Gunasekaran <gsathya@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45965}
* add functionality to wasm-module-builder.js to emit the module name
in the name section.
* extend WasmModule to store the module name length and offset.
* add functionality to module-decoder.cc to decode the module name.
* use the module name for printing stack traces. more uses should
follow.
* extend one message test to contain a module name.
R=ahaas@chromium.org
Change-Id: I94e6f1f2eb99cb656a92a85bb7afe0742292046f
Reviewed-on: https://chromium-review.googlesource.com/530366
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45846}
This adds reporting of linking failures (i.e. module instantiation)
similar to the existing reporting for validation failures. Note that
the messages in question are deterministic and can be tested.
R=clemensh@chromium.org
Change-Id: Ibecebefb86f1d878f626702c05fd0cb21189dc2a
Reviewed-on: https://chromium-review.googlesource.com/507488
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Jochen Eisinger <jochen@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45421}
New test262 tests bring up a couple cases with async arrow functions
that V8 didn't seem to handle properly; this patch makes those cases
errors:
- async (...x,) => y -- Rest parameter must be last formal parameter
- async (...x = z) => y -- No default value for rest parameter
- async (...x, y) => z -- Rest parameter must be last formal parameter
Bug: v8:4483, v8:5051
Change-Id: I024d9ba0c854e8e5e75283df2ee53127b1be090d
Reviewed-on: https://chromium-review.googlesource.com/496057
Commit-Queue: Daniel Ehrenberg <littledan@chromium.org>
Reviewed-by: Adam Klein <adamk@chromium.org>
Reviewed-by: Caitlin Potter <caitp@igalia.com>
Cr-Commit-Position: refs/heads/master@{#45116}
Fix error message printed by Runtime_ThrowCalledNonCallable.
As noted on the bug, this has a slight problem in that it will always
print that "asyncIterator" was not callable for GetIterator with an
async IteratorType, though it may be referring to a different call.
This issue is present regardless of the change I introduced to perform
this desugaring in the BytecodeGenerator.
BUG=v8:6187
R=adamk@chromium.org, verwaest@chromium.org
Change-Id: I2077b7cd5976d9d9ba044f0dff44ee8c312d1263
Reviewed-on: https://chromium-review.googlesource.com/470806
Reviewed-by: Adam Klein <adamk@chromium.org>
Commit-Queue: Caitlin Potter <caitp@igalia.com>
Cr-Commit-Position: refs/heads/master@{#44543}
Return a structured objet with the type profile
information.
Move the test from message to mjsunit.
BUG=v8:5933
Change-Id: I3e1c592697924d87f82d46b0ddbdb6d82d9c8467
Reviewed-on: https://chromium-review.googlesource.com/464847
Reviewed-by: Michael Stanton <mvstanton@chromium.org>
Commit-Queue: Franziska Hinkelmann <franzih@chromium.org>
Cr-Commit-Position: refs/heads/master@{#44364}
Add the source position to variables if they are parameters.
Collect type information for parameters and return values.
Index the types by their corresponding source position. For the
types of return values, use the function end as source position.
Sample output for a function with 2 parameters (at source
position 252 and 258, and function end at 443)
*************
Function: testFunction
252:
Object
number
string
number
258:
undefined
boolean
undefined
undefined
443:
Object
number
string
number
*************
BUG=v8:5933
Change-Id: I3b8749afcac706c1834146abf1b5b4a3fd130fb6
Reviewed-on: https://chromium-review.googlesource.com/461919
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Marja Hölttä <marja@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Franziska Hinkelmann <franzih@chromium.org>
Cr-Commit-Position: refs/heads/master@{#44299}
This removes the debug information (i.e. direct references to the parser
source file) from the message, hence making messages consistent between
release and debug mode. The debug information can now be printed via the
new --trace-asm-parser flag.
Also adds two message test cases, showcasing that expected output can
now be tested. More tests might be added to the message test suite later
whenever it makes sense.
R=clemensh@chromium.org
BUG=v8:6127
Change-Id: I348044356896442ff9be2d638a564c82fec7a51c
Reviewed-on: https://chromium-review.googlesource.com/461942
Commit-Queue: Brad Nelson <bradnelson@chromium.org>
Reviewed-by: Brad Nelson <bradnelson@chromium.org>
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#44248}
