Commit Graph

227 Commits

Author SHA1 Message Date
Patrick Thier
17b9d8728a [regexp] Add missing case for EscapeRegExpPattern
EscapeRegExpPattern should return a string representation of a
RegExp instance that in turn can be used to construct a new
RegExp instance with the same internal state as the original one.

Previous versions incorrectly escaped '/' also inside character classes
(e.g. /[/]/ returned "[\/]").

This patch properly escapes '/' when necessary and omits unnecessary
escapes.

Bug: v8:8615, v8:1982, v8:9446
Change-Id: I4ecb993dc69d6976f4637cedf43465cd0c32e427
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1688050
Commit-Queue: Patrick Thier <pthier@google.com>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Mathias Bynens <mathias@chromium.org>
Reviewed-by: Peter Marshall <petermarshall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#62587}
2019-07-09 08:11:51 +00:00
Simon Zünd
843b6646b1 Reland "[array] Move Array#sort pre-processing to Torque"
This is a reland of 2b0ac2fb9f

The layout test that caused this revert was fixed with:
https://crrev.com/c/1627386

Original change's description:
> [array] Move Array#sort pre-processing to Torque
>
> This CL removes the "PrepareElementsForSort" runtime function, and
> replaces it with a simpler version in Torque. The biggest difference
> is that certain sparse configurations no longer have a fast-path.
>
> The Torque pre-processing step replaces the existing Torque mechanism that
> copied already pre-processed elements into the "work" FixedArray. The Torque
> compacting works as follows:
>   - Iterate all elements from 0 to {length}
>     - If the element is the hole: Do nothing.
>     - If the element is "undefined": Increment undefined counter.
>     - In all other cases, push the element into the "work" FixedArray.
>
> Then the "work" FixedArray is sorted as before. Writing the elements from
> the "work" array back into the receiver, after sorting, has three steps:
>   1. Copy the sorted elements from the "work" FixedArray to the receiver.
>   2. Add previously counted number of "undefined" to the receiver.
>   3. Depending on the backing store either delete properties or
>      set them to the Hole up to {length}.
>
> Bug: v8:8714
> Change-Id: I14eccb7cfd2e4618bce2a85cba0689d7e0380ad2
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1619756
> Commit-Queue: Simon Zünd <szuend@chromium.org>
> Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
> Reviewed-by: Jakob Gruber <jgruber@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#61812}

TBR: jgruber@chromium.org
Bug: v8:8714
Change-Id: If7613f6e5f37c5e0d649e8192195594bc6c32100
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1627977
Commit-Queue: Simon Zünd <szuend@chromium.org>
Auto-Submit: Simon Zünd <szuend@chromium.org>
Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#61827}
2019-05-24 12:13:17 +00:00
Simon Zünd
70eeb22d1c Revert "[array] Move Array#sort pre-processing to Torque"
This reverts commit 2b0ac2fb9f.

Reason for revert: Breaks scrollingcoordinator/non-fast-scrollable-region-nested.html layout test on https://ci.chromium.org/p/v8/builders/ci/V8-Blink%20Linux%2064/32241 

Original change's description:
> [array] Move Array#sort pre-processing to Torque
> 
> This CL removes the "PrepareElementsForSort" runtime function, and
> replaces it with a simpler version in Torque. The biggest difference
> is that certain sparse configurations no longer have a fast-path.
> 
> The Torque pre-processing step replaces the existing Torque mechanism that
> copied already pre-processed elements into the "work" FixedArray. The Torque
> compacting works as follows:
>   - Iterate all elements from 0 to {length}
>     - If the element is the hole: Do nothing.
>     - If the element is "undefined": Increment undefined counter.
>     - In all other cases, push the element into the "work" FixedArray.
> 
> Then the "work" FixedArray is sorted as before. Writing the elements from
> the "work" array back into the receiver, after sorting, has three steps:
>   1. Copy the sorted elements from the "work" FixedArray to the receiver.
>   2. Add previously counted number of "undefined" to the receiver.
>   3. Depending on the backing store either delete properties or
>      set them to the Hole up to {length}.
> 
> Bug: v8:8714
> Change-Id: I14eccb7cfd2e4618bce2a85cba0689d7e0380ad2
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1619756
> Commit-Queue: Simon Zünd <szuend@chromium.org>
> Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
> Reviewed-by: Jakob Gruber <jgruber@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#61812}

TBR=peter.wm.wong@gmail.com,jgruber@chromium.org,tebbi@chromium.org,szuend@chromium.org

Change-Id: If1c1bc07f38dfbd4bf6b6ce8f9d70714e7526877
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:8714
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1627976
Reviewed-by: Simon Zünd <szuend@chromium.org>
Commit-Queue: Simon Zünd <szuend@chromium.org>
Cr-Commit-Position: refs/heads/master@{#61814}
2019-05-24 07:24:27 +00:00
Simon Zünd
2b0ac2fb9f [array] Move Array#sort pre-processing to Torque
This CL removes the "PrepareElementsForSort" runtime function, and
replaces it with a simpler version in Torque. The biggest difference
is that certain sparse configurations no longer have a fast-path.

The Torque pre-processing step replaces the existing Torque mechanism that
copied already pre-processed elements into the "work" FixedArray. The Torque
compacting works as follows:
  - Iterate all elements from 0 to {length}
    - If the element is the hole: Do nothing.
    - If the element is "undefined": Increment undefined counter.
    - In all other cases, push the element into the "work" FixedArray.

Then the "work" FixedArray is sorted as before. Writing the elements from
the "work" array back into the receiver, after sorting, has three steps:
  1. Copy the sorted elements from the "work" FixedArray to the receiver.
  2. Add previously counted number of "undefined" to the receiver.
  3. Depending on the backing store either delete properties or
     set them to the Hole up to {length}.

Bug: v8:8714
Change-Id: I14eccb7cfd2e4618bce2a85cba0689d7e0380ad2
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1619756
Commit-Queue: Simon Zünd <szuend@chromium.org>
Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#61812}
2019-05-24 06:18:45 +00:00
Michael Achenbach
393f788c1f Reland "[test] Remove longer timeout on bots"
This is a reland of e632f8f45b

Original change's description:
> [test] Remove longer timeout on bots
>
> CQ_INCLUDE_TRYBOTS=luci.v8.try:v8_linux_gc_stress_dbg
> CQ_INCLUDE_TRYBOTS=luci.v8.try:v8_linux_gcc_rel
> CQ_INCLUDE_TRYBOTS=luci.v8.try:v8_linux64_msan_rel
> CQ_INCLUDE_TRYBOTS=luci.v8.try:v8_linux64_tsan_rel
> CQ_INCLUDE_TRYBOTS=luci.v8.try:v8_linux_arm64_dbg
> CQ_INCLUDE_TRYBOTS=luci.v8.try:v8_mac64_asan_rel
> CQ_INCLUDE_TRYBOTS=luci.v8.try:v8_win64_dbg
> CQ_INCLUDE_TRYBOTS=luci.v8.try:v8_android_arm64_n5x_rel_ng
> CQ_INCLUDE_TRYBOTS=luci.v8.try:v8_linux64_cfi_rel_ng
> CQ_INCLUDE_TRYBOTS=luci.v8.try:v8_linux64_ubsan_rel_ng
> CQ_INCLUDE_TRYBOTS=luci.v8.try:v8_linux_arm_lite_rel_ng
> CQ_INCLUDE_TRYBOTS=luci.v8.try:v8_linux_noi18n_rel_ng
> CQ_INCLUDE_TRYBOTS=luci.v8.try:v8_mac64_dbg_ng
>
> Bug: v8:9145
> Change-Id: I6efee8579d9d9e0aad0431f6b87c152141d4ec7f
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1581261
> Commit-Queue: Michael Achenbach <machenbach@chromium.org>
> Reviewed-by: Tamer Tas <tmrts@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#61107}

Bug: v8:9145
Change-Id: Id8f0468bbf2d67f62141e7f7c42417d351c3fffa
Cq-Include-Trybots: luci.v8.try:v8_linux_gc_stress_dbg
Cq-Include-Trybots: luci.v8.try:v8_linux_gcc_rel
Cq-Include-Trybots: luci.v8.try:v8_linux64_msan_rel
Cq-Include-Trybots: luci.v8.try:v8_linux64_tsan_rel
Cq-Include-Trybots: luci.v8.try:v8_linux_arm64_dbg
Cq-Include-Trybots: luci.v8.try:v8_mac64_asan_rel
Cq-Include-Trybots: luci.v8.try:v8_win64_dbg
Cq-Include-Trybots: luci.v8.try:v8_android_arm64_n5x_rel_ng
Cq-Include-Trybots: luci.v8.try:v8_linux64_cfi_rel_ng
Cq-Include-Trybots: luci.v8.try:v8_linux64_ubsan_rel_ng
Cq-Include-Trybots: luci.v8.try:v8_linux_arm_lite_rel_ng
Cq-Include-Trybots: luci.v8.try:v8_linux_noi18n_rel_ng
Cq-Include-Trybots: luci.v8.try:v8_mac64_dbg_ng
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1588429
Reviewed-by: Tamer Tas <tmrts@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#61167}
2019-05-02 13:04:29 +00:00
Michael Achenbach
ce90b8e3bc [test] Mark more slow tests
TBR=sigurds@chromium.org
NOTRY=true

Bug: v8:9145
Change-Id: I01829358bc2729d39d06ee40af108b3218e7339d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1585841
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#61043}
2019-04-26 11:51:21 +00:00
Michael Achenbach
47b325db92 [test] Skip and mark slow tests
NOTRY=true

Bug: v8:9145
Change-Id: I0751ad840bb5a93ae0d0988e1b69dd9b1b215f6a
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1585727
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Sigurd Schneider <sigurds@chromium.org>
Cr-Commit-Position: refs/heads/master@{#61032}
2019-04-26 08:27:19 +00:00
Daniel Clifford
cf81ce239c [torque]: Allow const-qualified struct and class fields
Const-qualified fields are allowed in both classes and structs.
In both cases, const fields can only be set via initialization
during construction.

Drive-by: unitialized -> uninitialized

Bug: v8:7793
Change-Id: Idec08df30f7897c756b7dd6f2b10bb6012fefb6a
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1547853
Commit-Queue: Daniel Clifford <danno@chromium.org>
Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60592}
2019-04-03 10:55:33 +00:00
Michael Achenbach
2e6ab9fc30 [test] Don't test jitless without embedded-builtins
NOTRY=true

Bug: v8:8889
Change-Id: I1faf4bcb8f573485915a8b79d551fbb4985a02a0
Reviewed-on: https://chromium-review.googlesource.com/c/1489075
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59872}
2019-02-26 14:33:01 +00:00
Peter Marshall
ff0cf00c72 Revert "[runtime] Reduce spread/apply call max arguments"
This reverts commit 4e3a17d040.

Reason for revert: Web compact issues, see crbug.com/910252

Original change's description:
> [runtime] Reduce spread/apply call max arguments
> 
> Bug: chromium:906043
> Change-Id: I308b29af0644c318d73926b27e65a94913c760c7
> Reviewed-on: https://chromium-review.googlesource.com/c/1346115
> Commit-Queue: Peter Marshall <petermarshall@chromium.org>
> Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
> Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
> Reviewed-by: Jakob Gruber <jgruber@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#57731}

TBR=jarin@chromium.org,jgruber@chromium.org,petermarshall@chromium.org,bmeurer@chromium.org

# Not skipping CQ checks because original CL landed > 1 day ago.

Bug: chromium:906043
Change-Id: I240c1b55c10fd3e108e3c49f93ce1d9ca9c61780
Reviewed-on: https://chromium-review.googlesource.com/c/1356502
Reviewed-by: Peter Marshall <petermarshall@chromium.org>
Commit-Queue: Peter Marshall <petermarshall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#57956}
2018-11-30 09:54:47 +00:00
Peter Marshall
4e3a17d040 [runtime] Reduce spread/apply call max arguments
Bug: chromium:906043
Change-Id: I308b29af0644c318d73926b27e65a94913c760c7
Reviewed-on: https://chromium-review.googlesource.com/c/1346115
Commit-Queue: Peter Marshall <petermarshall@chromium.org>
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#57731}
2018-11-22 12:08:17 +00:00
Michael Achenbach
c8d833a422 [test] Add more test suites to Android testing
NOTRY=true
TBR=sergiyb@chromium.org

Bug: chromium:866862
Change-Id: Ifcce9fced4fb96d0ec36335802549f146f0af751
Reviewed-on: https://chromium-review.googlesource.com/1209345
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Sergiy Byelozyorov <sergiyb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55705}
2018-09-07 09:53:15 +00:00
Simon Zünd
cfe7115690 [array] Move Array.p.unshift fall-back to Torque
This CL implements a generic baseline version of Array.p.unshift
in Torque, enabling us to remove the JS fall-back.

The elements-accessor fast-path is still used, but the check whether
to use it is also moved to Torque.

Support for sparse JSArrays is removed.

Drive-by change: Small refactoring in builtins-array that will
get extended to other array builtins in a follow-up CL.

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

Bug: v8:7624
Cq-Include-Trybots: luci.v8.try:v8_linux_noi18n_rel_ng
Change-Id: I7b23ce15e7b922eb333f61a408050dedec77c95a
Reviewed-on: https://chromium-review.googlesource.com/1189902
Commit-Queue: Simon Zünd <szuend@google.com>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55670}
2018-09-06 07:09:05 +00:00
Mike Stanton
fd334b3216 [builtins] Enable Torque Array.prototype.splice
Before, splice was implemented with a C++ fast path and a
comprehensive JavaScript version.

This impl. is entirely in Torque with a fastpath for SMI,
DOUBLE and OBJECT arrays, and a comprehensive slow path.
The same level of "sparse" array support as given by the
array.js implementation is included.

This reland addresses several issues:

* Removed "sparse" array support from splice.
* Addressed ClusterFuzz issue 876443:
  The test and code that uses the fix is in this CL.
  The fix in isolation can be seen here:
  https://chromium-review.googlesource.com/c/v8/v8/+/1199403
* Removed dead code in elements.cc

BUG=chromium:876443, v8:8131, v8:1956, v8:7221

Cq-Include-Trybots: luci.v8.try:v8_linux_noi18n_rel_ng
Change-Id: I2d4a66c24ba1edabeca34e27e6ff8ee6136ed5f1
Reviewed-on: https://chromium-review.googlesource.com/1201783
Commit-Queue: Michael Stanton <mvstanton@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55610}
2018-09-04 13:18:23 +00:00
Jungshik Shin
d9f4c84fa4 Roll ICU to ICU 62.1
See
  https://chromium-review.googlesource.com/c/chromium/deps/icu/+/1128503
for ICU changes.

Fix tests for ICU 61/Unicode 11/CLDR 33.1

* Update mjsunit/harmony/regexp-property-script-extensions.js per
  ScriptExtensions.txt in Unicode 11
* Update mjsunit/intl-numberformat-formattoparts.js for CLDR 33.1
* Mark an invalid Mozilla test (Georgian uppercasing)
* Fix currency format test (U+00A0 instead of U+0020)
* Enable Script_Extensions tests (test262)
* Add support for Extended_Pictographic in regex

Ref. https://github.com/tc39/ecma262/issues/1219.

Bug: chromium:850334, v8:7825
Test: intl/*, test262/intl402/*
Cq-Include-Trybots: luci.v8.try:v8_linux_noi18n_rel_ng
Change-Id: I146080cdc1164db4a71f484918723cf302666df8
Reviewed-on: https://chromium-review.googlesource.com/1111857
Reviewed-by: Mathias Bynens <mathias@chromium.org>
Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54376}
2018-07-11 10:24:26 +00:00
Eric Holk
4d4a3294b9 [test] Reverse sense of wasm_traps variant
D8 enables the Wasm trap handler by default now, but we need to make sure the
older bounds check case still gets test coverage too, as bounds checks will
continue to be a supported configuration.

Cq-Include-Trybots: luci.v8.try:v8_linux_noi18n_rel_ng
Change-Id: I5b0bdded6929a9b3a8480e87d038398b8d2a0fd8
Reviewed-on: https://chromium-review.googlesource.com/1048835
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Eric Holk <eholk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#53078}
2018-05-08 17:49:14 +00:00
Michael Achenbach
1d9b29d5fe [test] Skip flaky test
NOTRY=true
TBR=hablich@chromium.org

Bug: v8:7632
Change-Id: I42e6b3f3585c8a98750ac39de06934174f2a2fa4
Reviewed-on: https://chromium-review.googlesource.com/999417
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#52456}
2018-04-06 15:19:34 +00:00
Jungshik Shin
1d3a87bd1c Reland "Implement a new spec for timezone offset calculation"
This is a reland of dbdede0101
after a webkit layout test (geolocation-api/timestamp.html) was
fixed by
https://chromium-review.googlesource.com/c/chromium/src/+/994343 .

Original change's description:
> Implement a new spec for timezone offset calculation
>
> https://github.com/tc39/ecma262/pull/778 was recently merged
> to Ecma 262.
>
> It changes the way to convert between "local time" and UTC in such
> a way that it'd work for all timezones whether or not there has
> been any change in the timezone offset of the standard time. For
> instance, Europe/Moscow and some parts of US state of Indiana have
> changed the standard (non-DST) timezone offset a few times. The
> previous spec assumes that the the standard timezone offset is
> constant, but the new spec take into account the offset change
> history.
>
> In addition, it specifies a new way to calculate the timezone
> offset during a timezone transition (either in and
> out of DST or timezone offset shift).
>
> During a negative transition (e.g.  fall backward / getting
> out of DST), repeated times are to be interpreted as if the
> offset before the transition is in effect.
>
> During a positive transition (e.g. spring forward / getting
> into DST), skipped times are to be treated similarly. That
> is, they are to be interpreted as if the offset before the
> transition is in effect.
>
> With icu-timezone-data, v8 is compliant to the new spec for the
> past and the future as well as now whether or not the standard
> timezone offset of a given timezone has changed over time
> (e.g. Europe/Moscow, Pacific/Apia). With icu-timezone-data,
> Australia/Lord_Howe (30 minute DST change) also works per spec.
>
> Without icu-timezone-data, it works only for timezones of which
> the standard timezone offset is the same as the current offset
> (e.g. most North American timezones other than parts of Indiana)
> and of which the DST shift is an hour. For instance, it doesn't work
> for Europe/Moscow in 2010 when the standard timezone offset was
> +4h because the current (2018) standard timezone offset is +3h. Neither
> does it for Lord Howe in Australia with the DST shift of 0.5 hr.
>
> This CL used to require one of the two ICU CLs below, but not
> any more.
>
>   https://chromium-review.googlesource.com/c/chromium/deps/icu/+/572652
>   https://chromium-review.googlesource.com/851265  (a proposed CL to the
>   upstream ICU).
>
> Bug: v8:3547,chromium:417640,v8:5714
> Cq-Include-Trybots: luci.v8.try:v8_linux_noi18n_rel_ng
> Change-Id: Ib162295da5bee31b2390bd0918157014aebd3e33
> Reviewed-on: https://chromium-review.googlesource.com/572148
> Commit-Queue: Jungshik Shin <jshin@chromium.org>
> Reviewed-by: Daniel Ehrenberg <littledan@chromium.org>
> Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#52332}

Bug: v8:3547, chromium:417640, v8:5714
Change-Id: I47536c111143f75e3cfeecf5d9761c43a98a10f5
Cq-Include-Trybots: luci.v8.try:v8_linux_noi18n_rel_ng;master.tryserver.blink:linux_trusty_blink_rel
Reviewed-on: https://chromium-review.googlesource.com/995971
Commit-Queue: Jungshik Shin <jshin@chromium.org>
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#52372}
2018-04-04 22:42:30 +00:00
Clemens Hammacher
965edc0e2e Revert "Implement a new spec for timezone offset calculation"
This reverts commit dbdede0101.

Reason for revert: Fails webkit_tests, blocks roll: https://build.chromium.org/p/client.v8.fyi/builders/V8-Blink%20Linux%2064

Original change's description:
> Implement a new spec for timezone offset calculation
> 
> https://github.com/tc39/ecma262/pull/778 was recently merged
> to Ecma 262.
> 
> It changes the way to convert between "local time" and UTC in such
> a way that it'd work for all timezones whether or not there has
> been any change in the timezone offset of the standard time. For
> instance, Europe/Moscow and some parts of US state of Indiana have
> changed the standard (non-DST) timezone offset a few times. The
> previous spec assumes that the the standard timezone offset is
> constant, but the new spec take into account the offset change
> history.
> 
> In addition, it specifies a new way to calculate the timezone
> offset during a timezone transition (either in and
> out of DST or timezone offset shift).
> 
> During a negative transition (e.g.  fall backward / getting
> out of DST), repeated times are to be interpreted as if the
> offset before the transition is in effect.
> 
> During a positive transition (e.g. spring forward / getting
> into DST), skipped times are to be treated similarly. That
> is, they are to be interpreted as if the offset before the
> transition is in effect.
> 
> With icu-timezone-data, v8 is compliant to the new spec for the
> past and the future as well as now whether or not the standard
> timezone offset of a given timezone has changed over time
> (e.g. Europe/Moscow, Pacific/Apia). With icu-timezone-data,
> Australia/Lord_Howe (30 minute DST change) also works per spec.
> 
> Without icu-timezone-data, it works only for timezones of which
> the standard timezone offset is the same as the current offset
> (e.g. most North American timezones other than parts of Indiana)
> and of which the DST shift is an hour. For instance, it doesn't work
> for Europe/Moscow in 2010 when the standard timezone offset was
> +4h because the current (2018) standard timezone offset is +3h. Neither
> does it for Lord Howe in Australia with the DST shift of 0.5 hr.
> 
> This CL used to require one of the two ICU CLs below, but not
> any more.
> 
>   https://chromium-review.googlesource.com/c/chromium/deps/icu/+/572652
>   https://chromium-review.googlesource.com/851265  (a proposed CL to the
>   upstream ICU).
> 
> Bug: v8:3547,chromium:417640,v8:5714
> Cq-Include-Trybots: luci.v8.try:v8_linux_noi18n_rel_ng
> Change-Id: Ib162295da5bee31b2390bd0918157014aebd3e33
> Reviewed-on: https://chromium-review.googlesource.com/572148
> Commit-Queue: Jungshik Shin <jshin@chromium.org>
> Reviewed-by: Daniel Ehrenberg <littledan@chromium.org>
> Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#52332}

TBR=adamk@chromium.org,littledan@chromium.org,mlippautz@chromium.org,jshin@chromium.org

Change-Id: I6b3bf4427c761b106280d565a3912cd8e25cf87e
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:3547, chromium:417640, v8:5714
Cq-Include-Trybots: luci.v8.try:v8_linux_noi18n_rel_ng
Reviewed-on: https://chromium-review.googlesource.com/994192
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#52338}
2018-04-03 22:07:32 +00:00
Jungshik Shin
dbdede0101 Implement a new spec for timezone offset calculation
https://github.com/tc39/ecma262/pull/778 was recently merged
to Ecma 262.

It changes the way to convert between "local time" and UTC in such
a way that it'd work for all timezones whether or not there has
been any change in the timezone offset of the standard time. For
instance, Europe/Moscow and some parts of US state of Indiana have
changed the standard (non-DST) timezone offset a few times. The
previous spec assumes that the the standard timezone offset is
constant, but the new spec take into account the offset change
history.

In addition, it specifies a new way to calculate the timezone
offset during a timezone transition (either in and
out of DST or timezone offset shift).

During a negative transition (e.g.  fall backward / getting
out of DST), repeated times are to be interpreted as if the
offset before the transition is in effect.

During a positive transition (e.g. spring forward / getting
into DST), skipped times are to be treated similarly. That
is, they are to be interpreted as if the offset before the
transition is in effect.

With icu-timezone-data, v8 is compliant to the new spec for the
past and the future as well as now whether or not the standard
timezone offset of a given timezone has changed over time
(e.g. Europe/Moscow, Pacific/Apia). With icu-timezone-data,
Australia/Lord_Howe (30 minute DST change) also works per spec.

Without icu-timezone-data, it works only for timezones of which
the standard timezone offset is the same as the current offset
(e.g. most North American timezones other than parts of Indiana)
and of which the DST shift is an hour. For instance, it doesn't work
for Europe/Moscow in 2010 when the standard timezone offset was
+4h because the current (2018) standard timezone offset is +3h. Neither
does it for Lord Howe in Australia with the DST shift of 0.5 hr.

This CL used to require one of the two ICU CLs below, but not
any more.

  https://chromium-review.googlesource.com/c/chromium/deps/icu/+/572652
  https://chromium-review.googlesource.com/851265  (a proposed CL to the
  upstream ICU).

Bug: v8:3547,chromium:417640,v8:5714
Cq-Include-Trybots: luci.v8.try:v8_linux_noi18n_rel_ng
Change-Id: Ib162295da5bee31b2390bd0918157014aebd3e33
Reviewed-on: https://chromium-review.googlesource.com/572148
Commit-Queue: Jungshik Shin <jshin@chromium.org>
Reviewed-by: Daniel Ehrenberg <littledan@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#52332}
2018-04-03 17:56:25 +00:00
Michael Achenbach
36ade3d8a5 [test] Replace obsolete FAST_VARIANTS modifier
The fast variants set got the same as no variants after crankshaft
deprecation and there is no plan to extend it again. Hence we remove
the modifier now.

TBR=yangguo@chromium.org

Bug: v8:7264
Change-Id: Ib577542741841b5b9542327b90afea8d5a62c879
Reviewed-on: https://chromium-review.googlesource.com/866496
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#50566}
2018-01-15 08:52:45 +00:00
Josh Wolfe
6fe75e30aa Reland: Enable --harmony-function-tostring by default
Update tests to work with new behavior.

Thanks Yang Guo for fixing the GC problem in
ad126d46bb

R=adamk@chromium.org, machenbach@chromium.org
Q_INCLUDE_TRYBOTS=master.tryserver.blink:linux_trusty_blink_rel

Bug: v8:4958
Change-Id: Ia7d9417f80087fb6df4ef877d0b4357875ee6c30
Reviewed-on: https://chromium-review.googlesource.com/834458
Reviewed-by: Adam Klein <adamk@chromium.org>
Commit-Queue: Josh Wolfe <jwolfe@igalia.com>
Cr-Commit-Position: refs/heads/master@{#50486}
2018-01-10 17:29:46 +00:00
Michael Achenbach
4faed83040 Revert "Enable --harmony-function-tostring by default"
This reverts commit c3dda0bbac.

Reason for revert: Breaks gc stress bots:
https://build.chromium.org/p/client.v8/builders/V8%20Linux%20-%20gc%20stress/builds/14266

Original change's description:
> Enable --harmony-function-tostring by default
>
> Update tests to work with new behavior.
>
> This feature is shipping in Firefox 54, so compatibility risk is low.
>
> R=​littledan@chromium.org, adamk@chromium.org, caitp@igalia.com
> CQ_INCLUDE_TRYBOTS=master.tryserver.blink:linux_trusty_blink_rel
>
> Bug: v8:4958
> Cq-Include-Trybots: master.tryserver.v8:v8_linux_noi18n_rel_ng
> Change-Id: Ib16d19468cf935f961d7bcd856ebbeb5692d3e61
> Reviewed-on: https://chromium-review.googlesource.com/546941
> Commit-Queue: Josh Wolfe <jwolfe@igalia.com>
> Reviewed-by: Adam Klein <adamk@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#50178}

TBR=adamk@chromium.org,hablich@chromium.org,kozyatinskiy@chromium.org,littledan@chromium.org,caitp@igalia.com,jwolfe@igalia.com

Change-Id: Ie5dd0bd2b97ae6d0126edec6373e48abe0eeb3f0
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:4958
Reviewed-on: https://chromium-review.googlesource.com/832649
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#50182}
2017-12-19 07:47:35 +00:00
Josh Wolfe
c3dda0bbac Enable --harmony-function-tostring by default
Update tests to work with new behavior.

This feature is shipping in Firefox 54, so compatibility risk is low.

R=littledan@chromium.org, adamk@chromium.org, caitp@igalia.com
CQ_INCLUDE_TRYBOTS=master.tryserver.blink:linux_trusty_blink_rel

Bug: v8:4958
Cq-Include-Trybots: master.tryserver.v8:v8_linux_noi18n_rel_ng
Change-Id: Ib16d19468cf935f961d7bcd856ebbeb5692d3e61
Reviewed-on: https://chromium-review.googlesource.com/546941
Commit-Queue: Josh Wolfe <jwolfe@igalia.com>
Reviewed-by: Adam Klein <adamk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#50178}
2017-12-18 23:17:17 +00:00
Michal Majewski
657e726a0d [test] Common statusfile flag format for mozilla and test262.
Bug: v8:6917
Change-Id: Ida8594caead9119b7b5dad6209017e2eae9cd3aa
Reviewed-on: https://chromium-review.googlesource.com/776799
Commit-Queue: Michał Majewski <majeski@google.com>
Reviewed-by: Sergiy Byelozyorov <sergiyb@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#49495}
2017-11-20 14:20:24 +00:00
Adam Klein
6e39c9e1a7 Remove always-on flag --harmony-strict-legacy-accessor-builtins
It was shipped in Chrome 62.

Bug: v8:5070
Cq-Include-Trybots: master.tryserver.v8:v8_linux_noi18n_rel_ng
Change-Id: I77119540411d1fe15691d40012cb96f4e2e45048
Reviewed-on: https://chromium-review.googlesource.com/776154
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Adam Klein <adamk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#49434}
2017-11-17 04:06:30 +00:00
Clemens Hammacher
eee9fcbccb [d8] Report errors in setTimeout
If an error is thrown in a setTimeout callback, exit d8 with an error
code.
This will allow us to test asynchronous failures better, see linked bug.

R=yangguo@chromium.org
CC=mathias@chromium.org

Bug: v8:6981
Change-Id: Ifad152e6039f12dc4ceaac0bdc4b87f709898087
Reviewed-on: https://chromium-review.googlesource.com/738372
Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#49104}
2017-11-03 12:21:53 +00:00
Leszek Swirski
27b1c47351 [ignition] Support n-ary logical ops
Following up on adding n-ary nodes, this extends the parser and
interpreter to support n-ary logical operations.

Bug: v8:6964
Bug: chromium:731861
Change-Id: Ife2141c389b9abccd917ab2aaddf399c436ef777
Reviewed-on: https://chromium-review.googlesource.com/735497
Reviewed-by: Adam Klein <adamk@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/master@{#49029}
2017-10-30 11:20:43 +00:00
Yang Guo
f554b1544f Reland "[d8] implement setTimeout."
This is a reland of c0e4e79ba4
Original change's description:
> [d8] implement setTimeout.
> 
> R=ahaas@chromium.org, jarin@chromium.org
> 
> Bug: v8:6770
> Change-Id: Iebf4dc9f2dd75079c5362e02d859c48e2113cf20
> Reviewed-on: https://chromium-review.googlesource.com/643067
> Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
> Reviewed-by: Yang Guo <yangguo@chromium.org>
> Commit-Queue: Yang Guo <yangguo@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#47780}

Bug: v8:6770
Change-Id: I765b64cc597aa48871c6b2dca95dec9de94a8511
Reviewed-on: https://chromium-review.googlesource.com/647754
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Commit-Queue: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47811}
2017-09-05 07:30:46 +00:00
Yang Guo
3d47a8f0ee Revert "[d8] implement setTimeout."
This reverts commit c0e4e79ba4.

Reason for revert: Isolate tests fail. https://build.chromium.org/p/client.v8/builders/V8%20Linux/builds/20200/steps/Check%20-%20isolates/logs/stdio

Original change's description:
> [d8] implement setTimeout.
> 
> R=​ahaas@chromium.org, jarin@chromium.org
> 
> Bug: v8:6770
> Change-Id: Iebf4dc9f2dd75079c5362e02d859c48e2113cf20
> Reviewed-on: https://chromium-review.googlesource.com/643067
> Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
> Reviewed-by: Yang Guo <yangguo@chromium.org>
> Commit-Queue: Yang Guo <yangguo@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#47780}

TBR=yangguo@chromium.org,jarin@chromium.org,ahaas@chromium.org

Change-Id: I7abdedd7f5f4215d3df7b63f6656e78e1c4f9ea8
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:6770
Reviewed-on: https://chromium-review.googlesource.com/647592
Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47781}
2017-09-04 07:53:10 +00:00
Yang Guo
c0e4e79ba4 [d8] implement setTimeout.
R=ahaas@chromium.org, jarin@chromium.org

Bug: v8:6770
Change-Id: Iebf4dc9f2dd75079c5362e02d859c48e2113cf20
Reviewed-on: https://chromium-review.googlesource.com/643067
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47780}
2017-09-04 07:28:37 +00:00
Adam Klein
74edfccd45 Enable --harmony-strict-legacy-accessor-builtins by default
This behavior has been staged successfully without a bug report, and
has been shipped in the latest versions of Firefox and Safari.

Bug: v8:5070
Cq-Include-Trybots: master.tryserver.blink:linux_trusty_blink_rel
Change-Id: I084cae2cc303d6a213bd6789297b91656e162d6b
Reviewed-on: https://chromium-review.googlesource.com/595129
Reviewed-by: Daniel Ehrenberg <littledan@chromium.org>
Commit-Queue: Adam Klein <adamk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47098}
2017-08-02 21:30:57 +00:00
Daniel Ehrenberg
1125637681 [builtins] Increase precision limits for toFixed, etc
This patch implements a recent spec change [1] which increases the
bounds of precision for toFixed, toExponential and toPrecision.
The bounds are a compromise between SpiderMonkey and the other
engines.

[1] https://github.com/tc39/ecma262/pull/857

Bug: v8:6539
Cq-Include-Trybots: master.tryserver.v8:v8_linux_noi18n_rel_ng
Change-Id: I877aa35e08f3dcda63f5f9181fdecf3c227f2c35
Reviewed-on: https://chromium-review.googlesource.com/553378
Commit-Queue: Daniel Ehrenberg <littledan@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46793}
2017-07-20 13:05:35 +00:00
sampsong
e4753d2828 [test] Fix test status file simulator_run not evaluate to boolean error
and clean up equal operator

BUG=
R=bjaideep@ca.ibm.com, jyan@ca.ibm.com, joransiu@ca.ibm.com, machenbach@chromium.org, rossberg@chromium.org

Review-Url: https://codereview.chromium.org/2961873002
Cr-Commit-Position: refs/heads/master@{#46301}
2017-06-28 21:32:19 +00:00
Daniel Vogelheim
79324c4de6 [parser] Treat \ufffe as non-whitespace.
R=marja@chromium.org

Bug: chromium:726625
Change-Id: I3f451a47b5a60a4c367d04a5466acd9e2f90df14
Reviewed-on: https://chromium-review.googlesource.com/530849
Reviewed-by: Marja Hölttä <marja@chromium.org>
Commit-Queue: Daniel Vogelheim <vogelheim@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46063}
2017-06-20 16:44:51 +00:00
Michael Starzinger
18d82682d1 [test] Remove dead and unmaintained test variants.
The two variants "turbofan" and "turbofan_opt" are not part of any of
the default sets of variants that run-tests.py uses. The only way to
trigger execution would be via the --variants flag directly, which our
infrastructure is not doing.

R=machenbach@chromium.org

Change-Id: Ifa58cb4a83a3760ffba73e8b40b417a845f53506
Reviewed-on: https://chromium-review.googlesource.com/526637
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45772}
2017-06-07 15:57:56 +00:00
Michael Achenbach
0a1cad371e [test] Deprecate timeout test expectations
Tests should instead be skipped or fixed.

Existing timeout expectations are either optimistically deleted or replaced by the SLOW keyword.

Change-Id: Ic43f52bf18d0702674c95f9263a109041a1c9cd8
Reviewed-on: https://chromium-review.googlesource.com/518122
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45552}
2017-05-29 10:38:55 +00:00
Michael Starzinger
54a1942a84 [asm.js] Widen test coverage to cctest and friends.
R=machenbach@chromium.org
BUG=v8:6127

Change-Id: I19092232bc0de728ec37fa9188998ec9dbd94bed
Reviewed-on: https://chromium-review.googlesource.com/459498
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#44170}
2017-03-28 08:00:40 +00:00
jgruber
c0fe56e63d [regexp] Correct lastIndex behavior in RegExp.prototype[@@replace]
@@replace has a pretty complex implementation, taking different paths
for various situations (e.g.: global/nonglobal regexp, functional/string
replace argument, etc.). Each of these paths must implement similar
logic for calling into the RegExpBuiltinExec spec operation, and many
paths get this subtly wrong.

This CL fixes a couple of issues related to the way @@replace handles lastIndex:
* All paths now respect lastIndex when calling into exec (some used to assume 0).
* lastIndex is now advanced after a successful match for sticky regexps.
* lastIndex is now only reset to 0 on failure for sticky regexps.

BUG=v8:5361

Review-Url: https://codereview.chromium.org/2685183003
Cr-Commit-Position: refs/heads/master@{#43234}
2017-02-16 09:21:37 +00:00
eholk
eaed31c5f5 [wasm] Add guard regions to end of WebAssembly.Memory buffers
With this change, WebAssembly.Memory objects have backing stores allocated as an
8GB region where everything beyond the size of the Wasm heap is inaccessible.

GrowMemory is now implemented by changing the protection on the guard regions to
make the new portions of the heap accessible.

Guard pages are not enabled by default, but this change adds a flag and a test
variant to make sure we get test coverage on them.

BUG= https://bugs.chromium.org/p/v8/issues/detail?id=5277

Review-Url: https://codereview.chromium.org/2396433008
Cr-Commit-Position: refs/heads/master@{#41089}
2016-11-17 20:29:13 +00:00
adamk
2c60ecf6e4 Skip some mozilla tests on turbofan_opt as they consistently timeout
These tests were marked as NO_VARIANTS under debug, but they were timing
out under turbofan_opt as well on the CFI bot (see, e.g.:
https://build.chromium.org/p/client.v8/builders/V8%20Linux64%20-%20cfi/builds/6765).

R=machenbach@chromium.org

Review-Url: https://codereview.chromium.org/2400463003
Cr-Commit-Position: refs/heads/master@{#40103}
2016-10-07 22:41:42 +00:00
bmeurer
0702ea3000 [turbofan] Don't take into account source size for inlining heuristics.
The source size is not a real indicator for whether or not to inline a
certain function.

R=ishell@chromium.org, jarin@chromium.org
BUG=v8:3354,v8:5267

Committed: 1b33028607
Review-Url: https://codereview.chromium.org/2361813002
Cr-Commit-Position: refs/heads/master@{#39681}
2016-09-23 16:23:34 +00:00
bradnelson
7e07d3f669 [wasm] asm.js: Add asm_wasm variant to test asm.js->wasm pipeline.
BUG= https://bugs.chromium.org/p/v8/issues/detail?id=4203
BUG= https://bugs.chromium.org/p/v8/issues/detail?id=5406
LOG=N
R=mstarzinger@chromium.org,machenbach@chromium.org

Review-Url: https://codereview.chromium.org/2309833003
Cr-Commit-Position: refs/heads/master@{#39521}
2016-09-19 23:57:13 +00:00
mstarzinger
7b37243358 [turbofan] Implement top-level lookup slot declaration.
This implements declaration of lookup slots for variables and functions
within optimized code. Such a declaration only appears with top-level
eval code, which we only recently started handling in TurboFan.

R=jarin@chromium.org

Review-Url: https://codereview.chromium.org/1962723002
Cr-Commit-Position: refs/heads/master@{#36125}
2016-05-10 08:19:22 +00:00
mstarzinger
22b4db544c [compiler] Allow optimization of top-level eval code.
This allows for top-level eval code to be parsed properly before doing
optimization. It uses the same kind of re-parsing we already perform
when compiling code for debugging.

R=bmeurer@chromium.org

Review-Url: https://codereview.chromium.org/1884143003
Cr-Commit-Position: refs/heads/master@{#36014}
2016-05-04 10:59:07 +00:00
machenbach
819371c628 Revert of Remove more dead code after Object.observe removal (patchset #5 id:80001 of https://codereview.chromium.org/1904313004/ )
Reason for revert:
[Sheriff] Looks like this breaks layout tests:
https://build.chromium.org/p/client.v8.fyi/builders/V8-Blink%20Linux%2064/builds/6442

Original issue's description:
> Remove more dead code after Object.observe removal
>
> This moves __{define,lookup}{Getter,Setter}__ to builtins.cc to free up the JavaScript implementation of DefineOwnProperty for deletion.

TBR=verwaest@chromium.org,jkummerow@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Review-Url: https://codereview.chromium.org/1929293002
Cr-Commit-Position: refs/heads/master@{#35886}
2016-04-29 06:31:02 +00:00
jkummerow
15e106382e Remove more dead code after Object.observe removal
This moves __{define,lookup}{Getter,Setter}__ to builtins.cc to free up the JavaScript implementation of DefineOwnProperty for deletion.

Review-Url: https://codereview.chromium.org/1904313004
Cr-Commit-Position: refs/heads/master@{#35876}
2016-04-28 18:35:42 +00:00
adamk
3c5d6caac2 Pass all parser flags from Parser to PreParser
This revealed one Mozilla test that depended upon a lack
of early error for "with ({}) function ...". The test
has been marked as failing.

R=littledan@chromium.org

Review URL: https://codereview.chromium.org/1814863005

Cr-Commit-Position: refs/heads/master@{#34910}
2016-03-19 00:55:10 +00:00
machenbach
0485d53806 [test] Mark slow test.
TBR=jkummerow@chromium.org
NOTRY=true

Review URL: https://codereview.chromium.org/1807883002

Cr-Commit-Position: refs/heads/master@{#34815}
2016-03-16 13:37:14 +00:00
littledan
0e7f095c6d Restrict FunctionDeclarations in Statement position
ES2015 generally bans FunctionDeclarations in positions which expect a Statement,
as opposed to a StatementListItem, such as a FunctionDeclaration which constitutes
the body of a for loop. However, Annex B 3.2 and 3.4 make exceptions for labeled
function declarations and function declarations as the body of an if statement in
sloppy mode, in the latter case specifying that the semantics are as if the
function declaration occurred in a block. Chrome has historically permitted
further extensions, for the body of any flow control construct.

This patch addresses both the syntactic and semantic mismatches between V8 and
the spec. For the semantic mismatch, function declarations as the body of if
statements change from unconditionally hoisting in certain cases to acquiring
the sloppy mode function in block semantics (based on Annex B 3.3). For the
extra syntax permitted, this patch adds a flag,
--harmony-restrictive-declarations, which excludes disallowed function declaration
cases. A new UseCounter, LegacyFunctionDeclaration, is added to count how often
function declarations occur as the body of other constructs in sloppy mode. With
this patch, the code generally follows the form of the specification with respect
to parsing FunctionDeclarations, rather than allowing them in arbitrary Statement
positions, and makes it more clear where our extensions occur.

BUG=v8:4647
R=adamk
LOG=Y

Review URL: https://codereview.chromium.org/1757543003

Cr-Commit-Position: refs/heads/master@{#34470}
2016-03-03 21:34:26 +00:00