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}

... that controls whether the TF graph zones should support compression.

Bug: v8:9923
Change-Id: Ifbe237b75e9c92e62eb32b69d6b3b1a818269b83
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2308347
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69036}

... by migrating old-style code
  MyObject* obj = new (zone) MyObject(...)

to the new style
  MyObject* obj = zone->New<MyObject>(...)

Bug: v8:10689
Change-Id: I55c686bbedfa1fd1955a5927df3f72b366312fd4
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2288867
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#68808}

This makes jumbo_file_merge_limit=50 work again.

Bug: chromium:770684
Change-Id: I5db6566da876d71ea6ba50ff03b7652074b0a35f
Reviewed-on: https://chromium-review.googlesource.com/725818Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Mostyn Bramley-Moore <mostynb@vewd.com>
Cr-Commit-Position: refs/heads/master@{#48728}

Review-Url: https://codereview.chromium.org/2145683004
Cr-Commit-Position: refs/heads/master@{#37745}

Verifies consistency of node inputs and uses:
- node inputs should agree with the input count computed from the node's operator.
- effect inputs should have effect outputs (or be a sentinel).
- control inputs should have control outputs (or be a sentinel).
- frame state inputs should be frame states (or be a sentinel).
- if the node has control uses, it should produce control.
- if the node has effect uses, it should produce effect.
- if the node has frame state uses, it must be a frame state.

I also removed some tests, either because they did not seem to be useful (scheduler) or they tested dead functionality (diamond effect phi).

Review URL: https://codereview.chromium.org/1368913002

Cr-Commit-Position: refs/heads/master@{#30927}

(Original CL: https://codereview.chromium.org/1347353003/)

Unfortunately, the mips gcc gets confused by arraysize on
variadic templated arguments, so we use sizeof... instead.

Review URL: https://codereview.chromium.org/1366543003

Cr-Commit-Position: refs/heads/master@{#30880}

Revert of [turbofan] Checking of input counts on node creation (patchset #4 id:60001 of https://codereview.chromium.org/1347353003/ )

Reason for revert:
[Sheriff] Breaks mips cross-compile:
http://build.chromium.org/p/client.v8/builders/V8%20Mips%20-%20builder/builds/4315

Original issue's description:
> [turbofan] Checking of input counts on node creation
>
> This required fixing bunch of tests with wrong input counts.
>
> Committed: https://crrev.com/260ec46efd74c45cdc4b156d95086b7de06621ad
> Cr-Commit-Position: refs/heads/master@{#30877}

TBR=bmeurer@chromium.org,mstarzinger@chromium.org,jarin@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Review URL: https://codereview.chromium.org/1362783004

Cr-Commit-Position: refs/heads/master@{#30878}

This required fixing bunch of tests with wrong input counts.

Review URL: https://codereview.chromium.org/1347353003

Cr-Commit-Position: refs/heads/master@{#30877}

R=bmeurer@chromium.org
TEST=unittests/CommonOperatorTest

Review URL: https://codereview.chromium.org/912393002

Cr-Commit-Position: refs/heads/master@{#26584}

- Move NodeMarker to its own file, and introduce a non
  templatized base class.
- Cleanup the include hell.
- Sanitize the Node construction methods now that we
  got rid of that GenericNode/GenericGraph stuff.
- Protect against NodeId overflow in Graph.
- Various minor cleanups.

TEST=cctest,mjsunit,unittests

Review URL: https://codereview.chromium.org/838783002

Cr-Commit-Position: refs/heads/master@{#25977}

This is a first step to refactoring OperatorProperties out of existence.
The next step is to inline OperatorProperties::GetXXXCount into the callers.

R=rossberg@chromium.org
BUG=

Review URL: https://codereview.chromium.org/680313003

Cr-Commit-Position: refs/heads/master@{#24983}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24983 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Value numbering is now limited to eliminatable operators (i.e. operators
that don't throw and don't write), and uses linear probing instead of
separate chaining.

TEST=unittests
R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/630423002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24452 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

As per discussion on the V8 team, this is the place we want them to live,
not following the Chrome Style Guide for this.

BUG=v8:3489
LOG=y
R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/615393002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24350 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

TEST=compiler-unittests,mjsunit/numops-fuzz
R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/540253003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@23725 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=mstarzinger@chromium.org
TEST=compiler-unittests

Review URL: https://codereview.chromium.org/539833003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@23724 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

TBR=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/539973002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@23688 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

TEST=compiler-unittests,cctest,mjsunit
R=mstarzinger@chromium.org, jarin@chromium.org

Review URL: https://codereview.chromium.org/539503002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@23686 ce2b1a6d-e550-0410-aec6-3dcde31c8c00