Skip to content

V
V8
Switch branch/tag
  1. 16 Jun, 2017 7 commits
  3. 15 Jun, 2017 9 commits
    • Adam Klein's avatar
      Revert "[builtins] Move most WeakMap/WeakSet code from JS to C++ builtins" · 431abca0
      Adam Klein authored 
      This reverts commit 8196e102.

Reason for revert: Performance regression due to hashcode lookup.

Original change's description:
> [builtins] Move most WeakMap/WeakSet code from JS to C++ builtins
> 
> They were already implemented mostly in C++ (only error/negative
> cases were handled in script), so this is mostly just a cleanup.
> Only the constructors remain in script after this CL.
> 
> Bug: v8:6354
> Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng
> Change-Id: I5b3579337a8e33dc30d49c2da5cfd42baec697bb
> Reviewed-on: https://chromium-review.googlesource.com/531670
> Reviewed-by: Camillo Bruni <cbruni@chromium.org>
> Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
> Commit-Queue: Adam Klein <adamk@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#45924}

TBR=adamk@chromium.org,cbruni@chromium.org,gsathya@chromium.org
Bug: v8:6354, chromium:733238
Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng

Change-Id: Ia5a741b9587886298f3ca057f6a6adeba556b8e0
Reviewed-on: https://chromium-review.googlesource.com/537207Reviewed-by: 's avatarAdam Klein <adamk@chromium.org>
Commit-Queue: Adam Klein <adamk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45966}
      431abca0
    • Sathya Gunasekaran's avatar
      [parser] Better error message when destructuring against undefined/null · bc2c785c
      Sathya Gunasekaran authored 
      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/537341Reviewed-by: 's avatarAdam Klein <adamk@chromium.org>
Commit-Queue: Sathya Gunasekaran <gsathya@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45965}
      bc2c785c
    • Adam Klein's avatar
      [bootstrapper|cleanup] Simplify creation of Atomics object · 390ad8c5
      Adam Klein authored 
      The Atomics object is a normal object, just like Math, JSON, etc., so
we should be able to set it up in the same way those are set up
since cff5470a.

Change-Id: I46a9ba990707c0659f1a62f628b2c69204e536f8
Reviewed-on: https://chromium-review.googlesource.com/537076Reviewed-by: 's avatarBen Smith <binji@chromium.org>
Commit-Queue: Adam Klein <adamk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45964}
      390ad8c5
    • Adam Klein's avatar
      [cleanup] Modernize creation of JSON, Math, and Intl objects · cff5470a
      Adam Klein authored 
      Before this patch, those builtin objects all used a strange-looking
pattern for creation that involved creating a new constructor
function (likely in order to get their ES5 [[Class]] set
appropriately).

But in modern times, with @@toStringTag as the mechanism of returning
the correct toString value, there should be no need for those extra
hoops, so simply use the Object constructor instead.

Change-Id: Id841dace26bf71f73ec25a71f1297d502438b27c
Reviewed-on: https://chromium-review.googlesource.com/533922
Commit-Queue: Adam Klein <adamk@chromium.org>
Reviewed-by: 's avatarMichael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45963}
      cff5470a
    • Adam Klein's avatar
      [runtime|cleanup] Remove implementation of unreachable runtime functions · 405fafb8
      Adam Klein authored 
      Change-Id: Ie4d21d2fc10db40efb42d66c9438ce3f3f01ce79
Reviewed-on: https://chromium-review.googlesource.com/533804Reviewed-by: 's avatarMichael Starzinger <mstarzinger@chromium.org>
Commit-Queue: Adam Klein <adamk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45962}
      405fafb8
    • Georg Neis's avatar
      [modules] Fix setting variables via debug-scopes. · e53fdff9
      Georg Neis authored 
      I incorrectly assumed that ScopeIterator::SetModuleVariableValue gets called
when the frame is the module function.

R=jgruber@chromium.org, kozyatinskiy@chromium.org

Bug: v8:1569, v8:6484
Change-Id: I1fbad8ccde57280149547c78e679527f7a0c89dd
Reviewed-on: https://chromium-review.googlesource.com/535620Reviewed-by: 's avatarAleksey Kozyatinskiy <kozyatinskiy@chromium.org>
Reviewed-by: 's avatarJakob Gruber <jgruber@chromium.org>
Commit-Queue: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45961}
      e53fdff9
    • Leszek Swirski's avatar
      Revert "[frames] Make interpreted frame detection stricter (reland)" · 920796b3
      Leszek Swirski authored 
      This reverts commit b7a036a6.

Reason for revert: We don't want to ever access the heap when walking the stack

Original change's description:
> [frames] Make interpreted frame detection stricter (reland)
> 
> When iterating over stack frames, make the interpreted frame detection
> require that the frame header contains the bytecode array.
> 
> Currently, the stack frame iterator supports bytecode handlers that
> don't create stack frames by checking if the top of the stack (i.e. the
> return address) is the interpreter entry trampoline. However, optimized
> code tail called from the interpreter entry trampoline can move the
> stack pointer without clearing the stack, which means it can end up with
> a pointer into the interpreter entry trampoline on the top of its stack
> (in an uninitialized value), and be interpreted as an interpreted frame.
> 
> To avoid such optimized code frames being interpreted as interpreted
> frames, we now additionally test the frame header, to see if it contains
> a valid pointer to a BytecodeArray.
> 
> Reland of https://chromium-review.googlesource.com/c/535646/
> 
> Change-Id: Iefbf305c9e4b43bebd2fc111663671d2b675e64a
> Reviewed-on: https://chromium-review.googlesource.com/536935
> Reviewed-by: Aleksey Kozyatinskiy <kozyatinskiy@chromium.org>
> Commit-Queue: Leszek Swirski <leszeks@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#45959}

TBR=kozyatinskiy@chromium.org,leszeks@chromium.org

Change-Id: I52a62c8e11af4d1565af92f10113b955f8c2c2f2
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/536938Reviewed-by: 's avatarLeszek Swirski <leszeks@chromium.org>
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45960}
      920796b3
    • Leszek Swirski's avatar
      [frames] Make interpreted frame detection stricter (reland) · b7a036a6
      Leszek Swirski authored 
      When iterating over stack frames, make the interpreted frame detection
require that the frame header contains the bytecode array.

Currently, the stack frame iterator supports bytecode handlers that
don't create stack frames by checking if the top of the stack (i.e. the
return address) is the interpreter entry trampoline. However, optimized
code tail called from the interpreter entry trampoline can move the
stack pointer without clearing the stack, which means it can end up with
a pointer into the interpreter entry trampoline on the top of its stack
(in an uninitialized value), and be interpreted as an interpreted frame.

To avoid such optimized code frames being interpreted as interpreted
frames, we now additionally test the frame header, to see if it contains
a valid pointer to a BytecodeArray.

Reland of https://chromium-review.googlesource.com/c/535646/

Change-Id: Iefbf305c9e4b43bebd2fc111663671d2b675e64a
Reviewed-on: https://chromium-review.googlesource.com/536935Reviewed-by: 's avatarAleksey Kozyatinskiy <kozyatinskiy@chromium.org>
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45959}
      b7a036a6
    • v8-autoroll's avatar
      Update V8 DEPS. · 8f741221
      v8-autoroll authored 
      Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/4280b28..3ab6155

Rolling v8/third_party/catapult: https://chromium.googlesource.com/external/github.com/catapult-project/catapult/+log/597f96e..59a182b

TBR=machenbach@chromium.org,vogelheim@chromium.org,hablich@chromium.org

Change-Id: Idaf4f74956b999fe846a21efb85850e50e619bbb
Reviewed-on: https://chromium-review.googlesource.com/536514Reviewed-by: 's avatarv8 autoroll <v8-autoroll@chromium.org>
Commit-Queue: v8 autoroll <v8-autoroll@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45958}
      8f741221
  5. 14 Jun, 2017 24 commits