port 50c4d882

BUG=

Review URL: https://codereview.chromium.org/770183002

Cr-Commit-Position: refs/heads/master@{#25595}

R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/770193002

Cr-Commit-Position: refs/heads/master@{#25594}

R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/770163002

Cr-Commit-Position: refs/heads/master@{#25593}

Also, remove V8_CC_CLANG since it's not read anywhere (and ideally shouldn't
be).

Clang tries to be compatible with gcc in clang mode, and with msvc in clang-cl
mode. It wants to go down the same code paths that these compilers want to go
down in most cases.

For example, V8PRIxPTR was set incorrectly on Windows 64-bit before this change
since macros.h assumed that checking for V8_CC_MSVC is enough to find LLP64
systems, but V8_CC_MSVC wasn't set for clang.  Most other existing checks for
V8_CC_MSVC should be taken for clang-cl too (and for the remaining ones,
clang-cl is happy with either code path).

Likewise, V8_IMMEDIATE_CRASH is currently set to a suboptimal value with clang
since __builtin_trap() is only used if V8_CC_GNU is set.

Including clang in the gcc and cl macros is also what chromium does.

BUG=chromium:82385
LOG=y

Review URL: https://codereview.chromium.org/757553004

Cr-Commit-Position: refs/heads/master@{#25592}

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

Review URL: https://codereview.chromium.org/763963002

Cr-Commit-Position: refs/heads/master@{#25591}

Port 45a36948

Fix typo in the mips ports.

BUG=

Review URL: https://codereview.chromium.org/767623003

Cr-Commit-Position: refs/heads/master@{#25590}

R=arv@chromium.org
BUG=v8:3330
LOG=N

Review URL: https://codereview.chromium.org/770843002

Cr-Commit-Position: refs/heads/master@{#25589}

BUG=

Review URL: https://codereview.chromium.org/770453003

Cr-Commit-Position: refs/heads/master@{#25588}

R=dcarney@chromium.org
BUG=

Review URL: https://codereview.chromium.org/773443002

Cr-Commit-Position: refs/heads/master@{#25587}

Review URL: https://codereview.chromium.org/770783003

Cr-Commit-Position: refs/heads/master@{#25586}

BUG=chromium:437143
LOG=N

Review URL: https://codereview.chromium.org/768113002

Cr-Commit-Position: refs/heads/master@{#25585}

BUG=

Review URL: https://codereview.chromium.org/757103003

Cr-Commit-Position: refs/heads/master@{#25584}

R=mstarzinger@chromium.org
BUG=

Review URL: https://codereview.chromium.org/767743003

Cr-Commit-Position: refs/heads/master@{#25583}

BUG=
R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/764863002

Patch from Weiliang Lin <weiliang.lin@intel.com>.

Cr-Commit-Position: refs/heads/master@{#25582}

BUG=v8:3663
LOG=N

Review URL: https://codereview.chromium.org/753993003

Cr-Commit-Position: refs/heads/master@{#25581}

Only use "addl" and "subl" in cases that have been measured to be
faster (currently only immediate operations).

Review URL: https://codereview.chromium.org/735293004

Cr-Commit-Position: refs/heads/master@{#25580}

BUG=v8:3730
LOG=N
R=dslomov@chromium.org

Review URL: https://codereview.chromium.org/750093003

Cr-Commit-Position: refs/heads/master@{#25579}

BUG=v8:3728
R=machenbach@chromium.org
LOG=n

Review URL: https://codereview.chromium.org/764263002

Cr-Commit-Position: refs/heads/master@{#25578}

R=rossberg@chromium.org
TBR=hpayer@chromium.org

Committed: https://chromium.googlesource.com/v8/v8/+/d6285620868b15c84eb9affa59f6b4e869f074b8

Review URL: https://codereview.chromium.org/763273002

Cr-Commit-Position: refs/heads/master@{#25577}

This is basically a refactoring that extracts desktop
specific code into a separate class.

Also adds flags for android runs (not used yet).

BUG=chromium:374740
LOG=n
TEST=python -m unittest run_perf_test
NOTRY=true

Review URL: https://codereview.chromium.org/762163002

Cr-Commit-Position: refs/heads/master@{#25576}

R=titzer@chromium.org

Review URL: https://codereview.chromium.org/768853002

Cr-Commit-Position: refs/heads/master@{#25575}

Revert of Introduce a kill-switch for shipping features. (patchset #2 id:20001 of https://codereview.chromium.org/763273002/)

Reason for revert:
Reverted for breaking nosnap: http://chromegw.corp.google.com/i/client.v8/builders/V8%20Linux%20-%20nosnap/builds/1003/steps/Check/logs/Threading3

Original issue's description:
> Introduce a kill-switch for shipping features.
>
> R=rossberg@chromium.org
>
> Committed: https://chromium.googlesource.com/v8/v8/+/d6285620868b15c84eb9affa59f6b4e869f074b8

TBR=rossberg@chromium.org
NOTREECHECKS=true
NOTRY=true

Review URL: https://codereview.chromium.org/763353002

Cr-Commit-Position: refs/heads/master@{#25574}

R=rossberg@chromium.org,caitpotter88@gmail.com
LOG=Y

Review URL: https://codereview.chromium.org/768833002

Cr-Commit-Position: refs/heads/master@{#25573}

R=titzer@chromium.org

Review URL: https://codereview.chromium.org/756073004

Cr-Commit-Position: refs/heads/master@{#25572}

BUG=v8:3292
R=yangguo@chromium.org, wingo@igalia.com
LOG=N

Review URL: https://codereview.chromium.org/760303002

Cr-Commit-Position: refs/heads/master@{#25571}

R=rossberg@chromium.org

Review URL: https://codereview.chromium.org/763273002

Cr-Commit-Position: refs/heads/master@{#25570}

R=titzer@chromium.org

Review URL: https://codereview.chromium.org/767733002

Cr-Commit-Position: refs/heads/master@{#25569}

TEST=mjsunit/numops-fuzz-part4
BUG=
R=balazs.kilvady@imgtec.com

Review URL: https://codereview.chromium.org/756073003

Cr-Commit-Position: refs/heads/master@{#25568}

R=mstarzinger@chromium.org
BUG=

Review URL: https://codereview.chromium.org/768763002

Cr-Commit-Position: refs/heads/master@{#25567}

R=mvstanton@chromium.org

Review URL: https://codereview.chromium.org/757813003

Cr-Commit-Position: refs/heads/master@{#25566}

R=titzer@chromium.org

Review URL: https://codereview.chromium.org/752263003

Cr-Commit-Position: refs/heads/master@{#25565}

BUG=

Review URL: https://codereview.chromium.org/766663006

Cr-Commit-Position: refs/heads/master@{#25564}

This switches off the resources feature. It will be solely
used for configuring files to be copied to android devices
in a follow up CL.

TBR=svenpanne@chromium.org
NOTRY=true

Review URL: https://codereview.chromium.org/764013002

Cr-Commit-Position: refs/heads/master@{#25563}

R=yangguo@chromium.org
LOG=N

BUG=437280

Review URL: https://codereview.chromium.org/769453002

Cr-Commit-Position: refs/heads/master@{#25562}

R=mvstanton@chromium.org

Review URL: https://codereview.chromium.org/762123002

Cr-Commit-Position: refs/heads/master@{#25561}

BUG=417668
LOG=n

Review URL: https://codereview.chromium.org/750813003

Cr-Commit-Position: refs/heads/master@{#25560}

TBR=svenpanne@chromium.org
NOTRY=true

Review URL: https://codereview.chromium.org/722023006

Cr-Commit-Position: refs/heads/master@{#25559}

NOTRY=true
BUG=chromium:431669
LOG=n
TBR=jkummerow@chromium.org
TEST=./script_test.py

Review URL: https://codereview.chromium.org/765943002

Cr-Commit-Position: refs/heads/master@{#25558}

TBR=rossberg@chromium.org

Review URL: https://codereview.chromium.org/762083002

Cr-Commit-Position: refs/heads/master@{#25557}

port c142994f

original commit message:

    Flesh out vector ic state query and set mechanisms.

    The IC system now fully integrates the vector concept and can
    handle loads and keyed loads vector-based.

BUG=

Review URL: https://codereview.chromium.org/763953002

Cr-Commit-Position: refs/heads/master@{#25556}