Bug: v8:10927
Change-Id: Icbdc0d7329ddd466e7d67a954246a35795b4dece
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2507310
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Peter Marshall <petermarshall@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71220}

This is a reland of 13141c8a

... with a fix for an UB issue of passing null pointers to memcpy()
when size is zero.

TBR=leszeks@chromium.org

Original change's description:
> [zone-compr] Introduce ZoneTypeTraits and ZoneCompression
>
> Also move zone compression flags to src/common/globals.h.
>
> Bug: v8:9923
> Change-Id: Id0a77720e735e2669a1e5eef48e1b4866ad99480
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2324255
> Reviewed-by: Leszek Swirski <leszeks@chromium.org>
> Commit-Queue: Igor Sheludko <ishell@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#69160}

Bug: v8:9923
Change-Id: I2245b81516c39ccea262c282c659ef601af57abf
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2332165
Commit-Queue: Igor Sheludko (OOO Aug 3-17) <ishell@chromium.org>
Reviewed-by: Igor Sheludko (OOO Aug 3-17) <ishell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69166}

This reverts commit 13141c8a.

Reason for revert: https://ci.chromium.org/p/v8/builders/ci/V8%20Linux64%20UBSan/12253?

Original change's description:
> [zone-compr] Introduce ZoneTypeTraits and ZoneCompression
> 
> Also move zone compression flags to src/common/globals.h.
> 
> Bug: v8:9923
> Change-Id: Id0a77720e735e2669a1e5eef48e1b4866ad99480
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2324255
> Reviewed-by: Leszek Swirski <leszeks@chromium.org>
> Commit-Queue: Igor Sheludko <ishell@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#69160}

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

Change-Id: I01fc05b33d01c19f9a9432d4b2dd73cf8b38b972
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:9923
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2332163Reviewed-by: Nico Hartmann <nicohartmann@chromium.org>
Commit-Queue: Nico Hartmann <nicohartmann@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69162}

Also move zone compression flags to src/common/globals.h.

Bug: v8:9923
Change-Id: Id0a77720e735e2669a1e5eef48e1b4866ad99480
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2324255Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69160}

Also make ScopedList class Zone-agnostic and move it to src/utils.

Bug: v8:10506
Change-Id: Ibf0869566caa767809bdf95cb03c01e599613938
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2292234Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#68825}

... and introduce a bottleneck for collecting reusable zone memory
statistics.

Tbr: jgruber@chromium.org
Bug: v8:10572
Change-Id: I418f8b495c0d89c0eb73f4e19bc4315acfadb480
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2287500Reviewed-by: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#68776}

... into
  src/zone/scoped-list.h
  src/zone/zone-hashmap.h
  src/zone/zone-list.h
  src/zone/zone-fwd.h

zone-fwd.h header contains zone-related forward type declarations.

Bug: v8:10506
Change-Id: Ic61b6717b3034afa24bdd49fbc0ce758a0e93c75
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2284987
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/master@{#68734}

NOPRESUBMIT=true
TBR=mstarzinger@chromium.org

Bug: v8:9247
Change-Id: I4cd6b79a1c2cba944f6f23caed59d4f1a4ee358b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1624217
Commit-Queue: Yang Guo <yangguo@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#61790}

Instead, use std::sort and std::stable_sort at the 3 (!) call sites
directly. This also removes the weird comparer adaptors from Vector,
which are only used in ZoneList.

R=jkummerow@chromium.org

Bug: v8:9183
Change-Id: I4d0377976fb0a965cb68a21d4307df9ba09fd55d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1587394Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#61109}

Our {Vector} template provides both {start} and {begin} methods. They
return exactly the same value. Since the {begin} method is needed for
iteration, and is also what standard containers provide, this CL
switches all uses of the {start} method to use {begin} instead.

Patchset 1 was auto-generated by using this clang AST matcher:
    callExpr(
        callee(
          cxxMethodDecl(
            hasName("start"),
            ofClass(hasName("v8::internal::Vector")))
        ),
        argumentCountIs(0))

Patchset 2 was created by running clang-format. Patchset 3 then
removes the now unused {Vector::start} method.

R=jkummerow@chromium.org
TBR=mstarzinger@chromium.org,yangguo@chromium.org,verwaest@chromium.org

Bug: v8:9183
Change-Id: Id9f01c92870872556e2bb3f6d5667463b0e3e5c6
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1587381Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#61081}

Not even when copying 0 bytes. Same for memmove and memcmp.

Bug: v8:3770
Change-Id: I3ed45a4572467ec7a9fc697ac28c004aa9b8b274
Reviewed-on: https://chromium-review.googlesource.com/c/1436217Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Commit-Queue: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59101}

This allows us to stop tracking variables_ in the preparser.

This currently makes us track slightly more variables than neccessary in the
case `for (var ...` since `var ... of` needs to check conflicts with out simple
catch variables. We should probably track the names through a ScopedPtrList
instead of a ZonePtrList anyway. Then it won't matter anymore.

Change-Id: I64e3f9ab13af8269456439cf15b0bc4d5b9e5380
Reviewed-on: https://chromium-review.googlesource.com/c/1421360Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Toon Verwaest <verwaest@chromium.org>
Cr-Commit-Position: refs/heads/master@{#58960}

This CL moves a number of memory-related methods out of utils into its
own header, since utils.h is included in many places that do not need
these methods.

R=clemensh@chromium.org,mstarzinger@chromium.org

Change-Id: I5155baf329844784286413408c05c7108b789020
Reviewed-on: https://chromium-review.googlesource.com/c/1354889
Commit-Queue: Ben Titzer <titzer@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Marja Hölttä <marja@chromium.org>
Cr-Commit-Position: refs/heads/master@{#57948}

New code should use nullptr instead of NULL.

This patch updates existing use of NULL to nullptr where applicable,
making the code base more consistent.

BUG=v8:6928,v8:6921

Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng;master.tryserver.v8:v8_linux_noi18n_rel_ng
Change-Id: I4687f5b96fcfd88b41fa970a2b937b4f6538777c
Reviewed-on: https://chromium-review.googlesource.com/718338
Commit-Queue: Mathias Bynens <mathias@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48557}

ZoneList still used List as a base class, so this CL merges the two
classes together. We also remove unused functions in List and ZoneList.

We keep the inline header but move it to src/zone/zone-list-inl.h. The
includes that use this header are still quite tangled, but we can fix
that later.

Bug: v8:6333
Cq-Include-Trybots: master.tryserver.v8:v8_linux_noi18n_rel_ng
Change-Id: Ia809813834b2328ff616623f8a843812a1eb42a7
Reviewed-on: https://chromium-review.googlesource.com/681658
Commit-Queue: Peter Marshall <petermarshall@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48200}