Revert of [x64] Improve instruction selection for TruncateInt64ToInt32. (patchset #1 id:1 of https://codereview.chromium.org/936323004/)

Reason for revert:
Breaks SQLite

Original issue's description:
> [x64] Improve instruction selection for TruncateInt64ToInt32.
>
> R=svenpanne@chromium.org
>
> Committed: https://crrev.com/64a2717529e2197f3a789adabf86ca36f5eb764c
> Cr-Commit-Position: refs/heads/master@{#26739}

TBR=svenpanne@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Review URL: https://codereview.chromium.org/928723003

Cr-Commit-Position: refs/heads/master@{#26791}

The _GLIBCXX_DEBUG macro is now set by default for Linux Debug builds
and can be disabled using the disable_glibcxx_debug=1 setting
(compatible with Chrome).  This will help us catch problems earlier.

BUG=v8:3638
LOG=n

Review URL: https://codereview.chromium.org/946283003

Cr-Commit-Position: refs/heads/master@{#26790}

R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/946553002

Cr-Commit-Position: refs/heads/master@{#26789}

This avoids accidental coercion-to-bool when calling ReportMessage()
in the parser (e.g., from pointer types), and as a bonus makes callsites
easier to read.

Review URL: https://codereview.chromium.org/939303002

Cr-Commit-Position: refs/heads/master@{#26788}

Because we generated a different hash code for 0 and -0 we ended up
not even getting to the SameValueZero check.

BUG=v8:3906
LOG=N
R=adamk

Review URL: https://codereview.chromium.org/947443005

Cr-Commit-Position: refs/heads/master@{#26787}

After further spec reading it turns out that we should not do ToObject
on the iterable.

BUG=None
LOG=N
R=adamk

Review URL: https://codereview.chromium.org/941313003

Cr-Commit-Position: refs/heads/master@{#26786}

Also some target_at and target_at_put uniformed on mips and mips64.

BUG=

Review URL: https://codereview.chromium.org/942123002

Cr-Commit-Position: refs/heads/master@{#26785}

TEST=
BUG=

Review URL: https://codereview.chromium.org/945813002

Cr-Commit-Position: refs/heads/master@{#26784}

R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/943503003

Cr-Commit-Position: refs/heads/master@{#26783}

R=vegorov@chromium.org
BUG=v8:3325
LOG=N

Review URL: https://codereview.chromium.org/935393002

Cr-Commit-Position: refs/heads/master@{#26782}

BUG=

Review URL: https://codereview.chromium.org/942833002

Cr-Commit-Position: refs/heads/master@{#26781}

Mechanical change.

This will break dependency between profiler-generator and heap-profiler-generator.
Later this will help us to reuse SourcePosition in cpu-profiler.

BUG=452067
LOG=n

Review URL: https://codereview.chromium.org/945873002

Cr-Commit-Position: refs/heads/master@{#26780}

R=svenpanne@chromium.org
BUG=v8:3776
LOG=N

Review URL: https://codereview.chromium.org/942003002

Cr-Commit-Position: refs/heads/master@{#26779}

R=bmeurer@chromium.org
TEST=unittests/SchedulerTest,unittests/SchedulerRPOTest

Review URL: https://codereview.chromium.org/927653004

Cr-Commit-Position: refs/heads/master@{#26778}

R=bmeurer@chromium.org
TEST=unittests/NodePropertiesTest.CollectControlProjections_Call

Review URL: https://codereview.chromium.org/941993002

Cr-Commit-Position: refs/heads/master@{#26777}

TBR=tandrii@chromium.org,

Review URL: https://codereview.chromium.org/938403002

Cr-Commit-Position: refs/heads/master@{#26776}

We accessed to cpu_profiler for tracking SharedFunctionInfo objects movements and used their addresses for generating function_id. Actually we could replace the manually generated shared_id by the pair script_id + position. In this case we can drop SharedFunctionInfo events support from cpu_profiler and remove the dependency.

BTW GetCallUid was used as an unique identifier of the function on the front-end side. Actually it is a hash which might not be unique. So I renamed GetCallUid with GetHash and implemented GetFunctionId method.

BUG=452067
LOG=n

Review URL: https://codereview.chromium.org/941973002

Cr-Commit-Position: refs/heads/master@{#26775}

R=tandrii@chromium.org
TBR=tandrii@chromium.org

Review URL: https://codereview.chromium.org/942823003

Cr-Commit-Position: refs/heads/master@{#26774}

R=titzer@chromium.org

Review URL: https://codereview.chromium.org/940403002

Cr-Commit-Position: refs/heads/master@{#26773}

This saves space since OptimizeAsPrototype detaches from the transition tree, reclaiming intermediate maps. On gmail this corresponds to roughly 20% of all maps.

BUG=

Review URL: https://codereview.chromium.org/941213005

Cr-Commit-Position: refs/heads/master@{#26772}

TBR=tandrii@chromium.org
NOTRY=true

Review URL: https://codereview.chromium.org/940393002

Cr-Commit-Position: refs/heads/master@{#26771}

BUG=

Review URL: https://codereview.chromium.org/939163002

Cr-Commit-Position: refs/heads/master@{#26770}

TBR=machenbach@chromium.org
BUG=v8:3776
LOG=N

Review URL: https://codereview.chromium.org/944833002

Cr-Commit-Position: refs/heads/master@{#26769}

R=titzer@chromium.org
TEST=cctest/test-run-jsexceptions/CatchCall

Review URL: https://codereview.chromium.org/936343002

Cr-Commit-Position: refs/heads/master@{#26768}

R=svenpanne@chromium.org

Committed: https://crrev.com/5bbe693e4817011b6a496c638c9f09026fd3dac9
Cr-Commit-Position: refs/heads/master@{#26760}

Review URL: https://codereview.chromium.org/944803002

Cr-Commit-Position: refs/heads/master@{#26767}

R=titzer@chromium.org,bmeurer@chromium.org

Review URL: https://codereview.chromium.org/928213003

Cr-Commit-Position: refs/heads/master@{#26766}

R=marja@chromium.org
BUG=

Review URL: https://codereview.chromium.org/935413003

Cr-Commit-Position: refs/heads/master@{#26765}

R=hpayer@chromium.org
BUG=chromium:453111
LOG=Y

Review URL: https://codereview.chromium.org/932823002

Cr-Commit-Position: refs/heads/master@{#26764}

Revert of [turbofan] Finally get rid of the generic algorithm. (patchset #2 id:20001 of https://codereview.chromium.org/944803002/)

Reason for revert:
Breaks dbg builds.

Original issue's description:
> [turbofan] Finally get rid of the generic algorithm.
>
> R=svenpanne@chromium.org
>
> Committed: https://crrev.com/5bbe693e4817011b6a496c638c9f09026fd3dac9
> Cr-Commit-Position: refs/heads/master@{#26760}

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

Review URL: https://codereview.chromium.org/941963003

Cr-Commit-Position: refs/heads/master@{#26763}

Rebase to latest and use branch created by git new-branch to get a patch that
only has the required changes.  Created new branch, reset to HEAD and then
cherry picked across the changes

	modified:   src/compiler/ppc/code-generator-ppc.cc
	modified:   src/compiler/ppc/instruction-selector-ppc.cc
	modified:   src/disassembler.cc
	modified:   src/ic/ppc/handler-compiler-ppc.cc
	modified:   src/ic/ppc/ic-compiler-ppc.cc
	modified:   src/ppc/assembler-ppc-inl.h
	modified:   src/ppc/assembler-ppc.cc
	modified:   src/ppc/assembler-ppc.h
	modified:   src/ppc/builtins-ppc.cc
	modified:   src/ppc/code-stubs-ppc.cc
	modified:   src/ppc/deoptimizer-ppc.cc
	modified:   src/ppc/disasm-ppc.cc
	modified:   src/ppc/full-codegen-ppc.cc
	modified:   src/ppc/macro-assembler-ppc.cc
	modified:   src/serialize.cc

R=danno@chromium.org, svenpanne@chromium.org

Review URL: https://codereview.chromium.org/935383002

Cr-Commit-Position: refs/heads/master@{#26762}

Add a link with instructions about how to assign v8
issues to the chromium roll commit message.

Remove googler mapping feature as it doesn't apply anymore
to any generalist sheriff.

NOTRY=true

Review URL: https://codereview.chromium.org/938023002

Cr-Commit-Position: refs/heads/master@{#26761}

R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/944803002

Cr-Commit-Position: refs/heads/master@{#26760}

BUG=None
LOG=N
R=adamk

Review URL: https://codereview.chromium.org/936793003

Cr-Commit-Position: refs/heads/master@{#26759}

Add() becomes AddLocalExport, which takes an export_name and a local_name.
New parsing tests exercise this.

Also start generating exports for default exports (though this doesn't yet
handle anonymous default exports).

BUG=v8:1569
LOG=n

Review URL: https://codereview.chromium.org/934323004

Cr-Commit-Position: refs/heads/master@{#26758}

Review URL: https://codereview.chromium.org/941693002

Cr-Commit-Position: refs/heads/master@{#26757}

This is a temporary workaround for bogus array-bounds warning, due to bug in MIPS toolchain versions 4.8.2 and 4.9.2.

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56273

TEST=
BUG=

Review URL: https://codereview.chromium.org/928533002

Cr-Commit-Position: refs/heads/master@{#26756}

R=arv@chromium.org
BUG=

Review URL: https://codereview.chromium.org/932283003

Cr-Commit-Position: refs/heads/master@{#26755}

When the property is not found on the [[HomeObject]] prototype chain
then we should do a [[DefineOwnProperty]] on the instance.

BUG=v8:3330
LOG=N

Review URL: https://codereview.chromium.org/934463003

Cr-Commit-Position: refs/heads/master@{#26754}

R=marja@chromium.org
BUG=

Review URL: https://codereview.chromium.org/932333004

Cr-Commit-Position: refs/heads/master@{#26753}

Minor tools/grokdump improvements: avoid some None dereferences and add some line breaks to generated html pages.

Review URL: https://codereview.chromium.org/943573002

Cr-Commit-Position: refs/heads/master@{#26752}