Commits · 6b69d5365d5bf6ebca97bd07bf4d373c23fcd8bc · Linshizhi / V8

07 Sep, 2015 8 commits

X87: Reland Vector ICs: platform support for vector-based stores. · 6b69d536

chunyang.dai authored Sep 07, 2015

port 40fbed06 (r30581)

original commit message:

    The last changes for vector store functionality, they are in 3 areas:

    1) The new vector [keyed] store code stubs - implementation.
    2) IC and handler compiler adjustments
    3) Odds and ends. A change in ast.cc, a test update, a small Oracle fix.

BUG=

Review URL: https://codereview.chromium.org/1311413007

Cr-Commit-Position: refs/heads/master@{#30612}

6b69d536

X87: Remove obsolete functionality from the MacroAssemblers. · 0fce748d

chunyang.dai authored Sep 07, 2015

port 64e3bad3 (r30577)

original commit message:

    This is uncontroversial the dead code removal part of
    https://codereview.chromium.org/1307943013, which was
    previously landed, but got reverted because of DOM
    breakage that requires more investigation.

BUG=

Review URL: https://codereview.chromium.org/1321653004

Cr-Commit-Position: refs/heads/master@{#30611}

0fce748d

X87: [es6] Introduce a dedicated JSIteratorResult type. · 691f796f

chunyang.dai authored Sep 07, 2015

port 72bc4b5c (r30557)

original commit message:

    Use a single JSIteratorResult type for all implementation provided
    iterator results (i.e. the String, Array and collection iterators,
    and also for generators).  This removes one source of unnecessary
    polymorphism in for-of loops.  It is accomplished by a new intrinsic
    %_CreateIterResultObject() that should be used to create iterator
    result objects from JavaScript builtins (there's a matching factory
    method for C++ code).

    Also restructure the %StringIteratorPrototype%.next() and
    %ArrayIteratorPrototype%.next() functions to be a bit more friendly
    to optimizing compilers.

BUG=

Review URL: https://codereview.chromium.org/1331523002

Cr-Commit-Position: refs/heads/master@{#30610}

691f796f

X87: [es6] Initial steps towards a correct implementation of IsCallable. · 57d16cf4

chunyang.dai authored Sep 07, 2015

port 8a378f46 (r30552)

original commit message:

    This turns the has_instance_call_handler bit on Map into an is_callable
    bit, that matches the spec definition of IsCallable (i.e. instances have
    [[Call]] internal methods).

    Also fix the typeof operator to properly say "function" for everything
    that is callable.

    Also remove the (unused) premature %_GetPrototype optimization from
    Crankshaft, which just complicated the Map bit swap.

BUG=

Review URL: https://codereview.chromium.org/1310653004

Cr-Commit-Position: refs/heads/master@{#30609}

57d16cf4

X87: [es6] Re-implement rest parameters via desugaring. · e5ee42fa

chunyang.dai authored Sep 07, 2015

port 510baeac (r30550)

original commit message:

    Kills the kRestParameter bailout/disabled optimization, and fixes
    lazily parsed arrow functions with rest parameters.

    Supercedes https://crrev.com/1235153006/

BUG=

Review URL: https://codereview.chromium.org/1305943008

Cr-Commit-Position: refs/heads/master@{#30608}

e5ee42fa

Revert of Deactivate Parser Bookmarks (patchset #1 id:1 of... · ce1059ff

hablich authored Sep 07, 2015

Revert of Deactivate Parser Bookmarks (patchset #1 id:1 of https://codereview.chromium.org/1315173007/ )

Reason for revert:
Tanks performance (Mandreel latency). A simple deactivation will not work.

Original issue's description:
> Deactivate Parser Bookmarks.
>
> Bookmarks may create a race condition which
> results in syntax errors. The more files are parsed
> in parallel the higher the probability that the error
> occurs.
> Unfortunately it is not possible to simply revert the
> CLs related to Bookmarks.
>
> BUG=chromium:527930,chromium:510825
> LOG=Y
>
> Committed: https://crrev.com/129593b40eb69d93ba626601bfda046a95cda0e7
> Cr-Commit-Position: refs/heads/master@{#30594}

TBR=vogelheim@chromium.org,jkummerow@chromium.org,mstarzinger@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:527930,chromium:510825

Review URL: https://codereview.chromium.org/1304413007

Cr-Commit-Position: refs/heads/master@{#30607}

ce1059ff

X87: Crankshaft is now able to compile top level code even if there is a ScriptContext. · c0c3d866

chunyang.dai authored Sep 07, 2015

port 29ebcc32 (r30496).

original commit message:

    This CL introduces HPrologue instruction which does the context allocation work and supports deoptimization.

BUG=

Review URL: https://codereview.chromium.org/1308743005

Cr-Commit-Position: refs/heads/master@{#30606}

c0c3d866

X87: [builtins] Pass correct number of arguments after adapting arguments. · 4d6eef61

chunyang.dai authored Sep 07, 2015

port fbad6366 (r30467)

original commit message:

    The call protocol requires that the register dedicated to the number of
    actual arguments (i.e. rax on x64) always contains the actual arguments.
    That means after adapting arguments it should match the number of
    expected arguments.  But currently we pass some semi-random value
    (usually some stack address) after adapting arguments.

    It looks like this is currently not observable anywhere, because our
    builtins and functions either don't look at the number of arguments and
    just make hard coded (unchecked) assumptions, or are marked as "don't
    adapt arguments", which bypasses the broken code in the trampoline for
    arguments adaption.  Nevertheless this should be fixed.

BUG=

Review URL: https://codereview.chromium.org/1304893010

Cr-Commit-Position: refs/heads/master@{#30605}

4d6eef61

06 Sep, 2015 1 commit

MIPS:[turbofan] Improve boolean materialization compares. · 49a40c22

dusan.m.milosavljevic authored Sep 06, 2015

Additionally, improve immediate operand matching for branches
to avoid duplicated constant loading.

Review URL: https://codereview.chromium.org/1326173002

Cr-Commit-Position: refs/heads/master@{#30604}

49a40c22

05 Sep, 2015 3 commits

Fix a -Wsign-compare error under GCC 4.9.2. · c7720104

paul.lind authored Sep 05, 2015

BUG=

Review URL: https://codereview.chromium.org/1322693004

Cr-Commit-Position: refs/heads/master@{#30603}

c7720104

[arm] Decrease the size of the assembler class by allocating buffers of... · ce751ccf

ishell authored Sep 05, 2015

[arm] Decrease the size of the assembler class by allocating buffers of pending constants on the heap.

BUG=chromium:521828
LOG=N

Review URL: https://codereview.chromium.org/1310863005

Cr-Commit-Position: refs/heads/master@{#30602}

ce751ccf

Update V8 DEPS. · d052804a

v8-autoroll authored Sep 05, 2015

Rolling v8/build/gyp to 2b17e0b26a93e8c9758c23aec6c554da4ca8f0a9

TBR=machenbach@chromium.org,vogelheim@chromium.org,hablich@chromium.org

Review URL: https://codereview.chromium.org/1324213006

Cr-Commit-Position: refs/heads/master@{#30601}

d052804a

04 Sep, 2015 23 commits

Follow symlinks in test/mjsunit to allow linked test directories. · 12889b4a

bradnelson authored Sep 04, 2015

Wasm mjsunit tests aren't being detected when symlinked into
test/mjsunit/wasm. This causes symlinked directories in that
directory to be included.

BUG=None
TEST=local
R=dehrenberg@chromium.org
LOG=N

Review URL: https://codereview.chromium.org/1332463002

Cr-Commit-Position: refs/heads/master@{#30600}

12889b4a

[es6] Use SubString in String{Starts,Ends}With · d42920ce

karl authored Sep 04, 2015

Much faster and constant than always searching the whole string

````
var allCodePoints = [];
for (var i = 0; i < 65536; i++) allCodePoints[i] = i;
var allCharsString = String.fromCharCode.apply(String, allCodePoints);

function bench(search) {
  var counter = 0;
  print(search + " found at " + allCharsString.startsWith(search));
  var start = Date.now();
  while (counter++ < 5000000) {
    allCharsString.startsWith(search);
  }
  var end = Date.now();
  print(end - start);
  return counter;
}

print("single character");
bench("\u0000");
bench("\u0050");
bench("\u1000");
````

OLD

single character
 found at true
374
P found at false
559
က found at false
13492

NEW

single character
 found at true
261
P found at false
146
က found at false
146

BUG=v8:4384
LOG=N

Review URL: https://codereview.chromium.org/1321853006

Cr-Commit-Position: refs/heads/master@{#30599}

d42920ce

Pulling in a gyp fix for wasm. · 0304b299

bradnelson authored Sep 04, 2015

BUG= https://github.com/WebAssembly/v8-native-prototype/issues/10
TEST=manual check of wasm=on
R=dehrenberg@chromium.org
LOG=N

Review URL: https://codereview.chromium.org/1306753007

Cr-Commit-Position: refs/heads/master@{#30598}

0304b299

Reland: Speedup stringsearch for two byte strings · 24d48116

karl authored Sep 04, 2015

Uses the lower byte with memchr which is
significantly faster than a naive compare

Performance difference with bench (http://hastebin.com/xuxexataso.js):

old                             new

single character                single character
Κ found at 922                  Κ found at 922
3324                            616
㎡ found at 13217               ㎡ found at 13217
42366                           4931
က found at 4096                 က found at 4096
13369                           9836
＀ found at 65280                ＀ found at 65280
207472                          36149
ﾥ found at 65445                ﾥ found at 65445
209344                          36666
  found at 8197                   found at 8197
26731                           11757
倂 found at 20482               倂 found at 20482
66071                           17193

linear search                   linear search
ΚΛ found at 922                 ΚΛ found at 922
4112                            504
㎡㎢ found at 13217             ㎡㎢ found at 13217
55105                           5119
ﾥﾦ found at 65445               ﾥﾦ found at 65445
268016                          35496

linear + bmh search             linear + bmh search
ΚΛΜΝΞΟΠΡ found at 922           ΚΛΜΝΞΟΠΡ found at 922
2897                            522
ﾥﾦﾧﾨﾩﾪﾫﾬ found at 65445         ﾥﾦﾧﾨﾩﾪﾫﾬ found at 65445
167687                          35283

BUG=

Review URL: https://codereview.chromium.org/1324453007

Cr-Commit-Position: refs/heads/master@{#30597}

24d48116

MIPS: Optimize simulator. · 09f41681

balazs.kilvady authored Sep 04, 2015

The patch decreases the calls of huge switch instructions making the DecodeType*() functions to work in one phase and optimizing Instruction::InstructionType(). Speed gain in release full check is about 33% (6:13 s -> 4:09 s) and in optdebug full test is about 50% (12:29 -> 6:17)

BUG=

Review URL: https://codereview.chromium.org/1310883005

Cr-Commit-Position: refs/heads/master@{#30596}

09f41681

Ensure we have some space on the stack for compilation. · 2fe2258c

ishell authored Sep 04, 2015

BUG=chromium:527345, chromium:522289
LOG=N

Review URL: https://codereview.chromium.org/1323243005

Cr-Commit-Position: refs/heads/master@{#30595}

2fe2258c

Deactivate Parser Bookmarks. · 129593b4

hablich authored Sep 04, 2015

Bookmarks may create a race condition which
results in syntax errors. The more files are parsed
in parallel the higher the probability that the error
occurs.
Unfortunately it is not possible to simply revert the
CLs related to Bookmarks.

BUG=chromium:527930,chromium:510825
LOG=Y

Review URL: https://codereview.chromium.org/1315173007

Cr-Commit-Position: refs/heads/master@{#30594}

129593b4

Revert of [arm] Decrease the size of the assembler class by allocating buffers... · 5849a1ac

ishell authored Sep 04, 2015

Revert of [arm] Decrease the size of the assembler class by allocating buffers of pending constants on the he… (patchset #2 id:20001 of https://codereview.chromium.org/1309903009/ )

Reason for revert:
Static assert failed on ARM64

Original issue's description:
> [arm] Decrease the size of the assembler class by allocating buffers of pending constants on the heap.
>
> BUG=chromium:521828
> LOG=N
>
> Committed: https://crrev.com/033af3fa511c52bc4049cd278d0623a6c6f9f9c3
> Cr-Commit-Position: refs/heads/master@{#30592}

TBR=jkummerow@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:521828

Review URL: https://codereview.chromium.org/1307863007

Cr-Commit-Position: refs/heads/master@{#30593}

5849a1ac

[arm] Decrease the size of the assembler class by allocating buffers of... · 033af3fa

ishell authored Sep 04, 2015

[arm] Decrease the size of the assembler class by allocating buffers of pending constants on the heap.

BUG=chromium:521828
LOG=N

Review URL: https://codereview.chromium.org/1309903009

Cr-Commit-Position: refs/heads/master@{#30592}

033af3fa

Remove obsolete DEBUG and NDEBUG macro dance. · fe8cfe19

mstarzinger authored Sep 04, 2015

The original intention of this seemed to have been to enable DEBUG when
NDEBUG was not defined within Google3. Everything since then was just
added to avoid the "#error" below checking for consistency from firing.
Semantics have also shifted along the way. I vote for dropping this.

R=ulan@chromium.org

Review URL: https://codereview.chromium.org/1315063007

Cr-Commit-Position: refs/heads/master@{#30591}

fe8cfe19

PPC: Remove obsolete functionality from the MacroAssemblers. · af673677

mbrandy authored Sep 04, 2015

Port 64e3bad3

Original commit message:
    This is uncontroversial the dead code removal part of
    https://codereview.chromium.org/1307943013, which was
    previously landed, but got reverted because of DOM
    breakage that requires more investigation.

R=bmeurer@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com, dstence@us.ibm.com
BUG=

Review URL: https://codereview.chromium.org/1311123004

Cr-Commit-Position: refs/heads/master@{#30590}

af673677

Add template parameter and unittests to atomic utils. · cd6631ad

mlippautz authored Sep 04, 2015

BUG=

Review URL: https://codereview.chromium.org/1324153003

Cr-Commit-Position: refs/heads/master@{#30589}

cd6631ad

Revert of Speedup stringsearch for two byte strings (patchset #3 id:40001 of... · df966cd2

machenbach authored Sep 04, 2015

Revert of Speedup stringsearch for two byte strings (patchset #3 id:40001 of https://codereview.chromium.org/1303033012/ )

Reason for revert:
[Sheriff] Breaks fuzzer and msan:
http://build.chromium.org/p/client.v8/builders/V8%20Fuzzer/builds/4773

Repro with:
tools/fuzz-harness.sh out/Debug/d8
(in a ninja Debug build)

Msan:
http://build.chromium.org/p/client.v8/builders/V8%20Linux%20-%20arm64%20-%20sim%20-%20MSAN/builds/4097

Original issue's description:
> Speedup stringsearch for two byte strings
>
> Uses the lower byte with memchr which is
> significantly faster than a naive compare
>
> Performance difference with bench (http://hastebin.com/xuxexataso.js):
>
> old                             new
>
> single character                single character
> Κ found at 922                  Κ found at 922
> 3324                            616
> ㎡ found at 13217               ㎡ found at 13217
> 42366                           4931
> က found at 4096                 က found at 4096
> 13369                           9836
> ＀ found at 65280                ＀ found at 65280
> 207472                          36149
> ﾥ found at 65445                ﾥ found at 65445
> 209344                          36666
>   found at 8197                   found at 8197
> 26731                           11757
> 倂 found at 20482               倂 found at 20482
> 66071                           17193
>
> linear search                   linear search
> ΚΛ found at 922                 ΚΛ found at 922
> 4112                            504
> ㎡㎢ found at 13217             ㎡㎢ found at 13217
> 55105                           5119
> ﾥﾦ found at 65445               ﾥﾦ found at 65445
> 268016                          35496
>
> linear + bmh search             linear + bmh search
> ΚΛΜΝΞΟΠΡ found at 922           ΚΛΜΝΞΟΠΡ found at 922
> 2897                            522
> ﾥﾦﾧﾨﾩﾪﾫﾬ found at 65445         ﾥﾦﾧﾨﾩﾪﾫﾬ found at 65445
> 167687                          158465
>
> Committed: https://crrev.com/fced280f37588f8a232a414201276e053117e9ea
> Cr-Commit-Position: refs/heads/master@{#30587}

TBR=danno@chromium.org,mstarzinger@chromium.org,jkummerow@chromium.org,karl@skomski.com
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Review URL: https://codereview.chromium.org/1331433002

Cr-Commit-Position: refs/heads/master@{#30588}

df966cd2

Speedup stringsearch for two byte strings · fced280f

karl authored Sep 04, 2015

Uses the lower byte with memchr which is
significantly faster than a naive compare

Performance difference with bench (http://hastebin.com/xuxexataso.js):

old                             new

single character                single character
Κ found at 922                  Κ found at 922
3324                            616
㎡ found at 13217               ㎡ found at 13217
42366                           4931
က found at 4096                 က found at 4096
13369                           9836
＀ found at 65280                ＀ found at 65280
207472                          36149
ﾥ found at 65445                ﾥ found at 65445
209344                          36666
  found at 8197                   found at 8197
26731                           11757
倂 found at 20482               倂 found at 20482
66071                           17193

linear search                   linear search
ΚΛ found at 922                 ΚΛ found at 922
4112                            504
㎡㎢ found at 13217             ㎡㎢ found at 13217
55105                           5119
ﾥﾦ found at 65445               ﾥﾦ found at 65445
268016                          35496

linear + bmh search             linear + bmh search
ΚΛΜΝΞΟΠΡ found at 922           ΚΛΜΝΞΟΠΡ found at 922
2897                            522
ﾥﾦﾧﾨﾩﾪﾫﾬ found at 65445         ﾥﾦﾧﾨﾩﾪﾫﾬ found at 65445
167687                          158465

Review URL: https://codereview.chromium.org/1303033012

Cr-Commit-Position: refs/heads/master@{#30587}

fced280f

Handle all InstanceTypes in BitsetType::Lub(). · 082730a4

jkummerow authored Sep 04, 2015

JS_ITERATOR_RESULT_TYPE was missing but required (repro: load inbox.google.com with a Debug build).

R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/1302313013

Cr-Commit-Position: refs/heads/master@{#30586}

082730a4

Isolate::PrintStack: restore default verbose object printing · 842928af
jkummerow authored Sep 04, 2015
```
Review URL: https://codereview.chromium.org/1311123005

Cr-Commit-Position: refs/heads/master@{#30585}
```
842928af

[turbofan] Fix segfault when using --trace-turbo. · 2cf9053a

mtrofin authored Sep 04, 2015

BUG=

Review URL: https://codereview.chromium.org/1314703005

Cr-Commit-Position: refs/heads/master@{#30584}

2cf9053a

Make gold plugin download more robust. · d9fd711a

machenbach authored Sep 04, 2015

BUG=chromium:515782
LOG=n

Review URL: https://codereview.chromium.org/1321943004

Cr-Commit-Position: refs/heads/master@{#30583}

d9fd711a

[runtime] Remove useless IN builtin. · 3dc9b122

bmeurer authored Sep 04, 2015

Similar to DELETE, the IN builtin is just a thin wrapper for %HasElement
and %HasProperty anyway, and cannot be optimized, plus it had a weird
special fast case (which also involved at least one LOAD_IC plus some
intrinsic magic).

R=yangguo@chromium.org,jarin@chromium.org
CQ_INCLUDE_TRYBOTS=tryserver.v8:v8_win_nosnap_shared_rel

Committed: https://crrev.com/72d60a1e80e81e2e68ca402665e2acbc46c5e471
Cr-Commit-Position: refs/heads/master@{#30154}

Review URL: https://codereview.chromium.org/1295433002

Cr-Commit-Position: refs/heads/master@{#30582}

3dc9b122

Reland Vector ICs: platform support for vector-based stores. · 40fbed06

mvstanton authored Sep 04, 2015

The last changes for vector store functionality, they are in 3 areas:

1) The new vector [keyed] store code stubs - implementation.
2) IC and handler compiler adjustments
3) Odds and ends. A change in ast.cc, a test update, a small Oracle fix.

TBR=bmeurer@chromium.org, jkummerow@chromium.org
BUG=

Review URL: https://codereview.chromium.org/1319123004

Cr-Commit-Position: refs/heads/master@{#30581}

40fbed06

[turbofan] Split before loops. · f050c53c

mtrofin authored Sep 04, 2015

If the range doesn't have calls, but still fails to allocate, try and find a split
position outside a loop.

BUG=

Review URL: https://codereview.chromium.org/1301393012

Cr-Commit-Position: refs/heads/master@{#30580}

f050c53c

[turbofan] Greedy: split around calls heuristic. · db646fb2

mtrofin authored Sep 04, 2015

Once  a range is found to have a conflict, split around all the calls it
crosses over, since it will anyway have conflicts there, too.

Incrementally, from the last change to greedy, this change brings
overall improvement in benchmarks. In fact, except for 2 regressions
in Jetstream (splay-latency and date-format-xparb, at 6 and 7%
respectivelly), everything else is in the green or noise. Quite a few
benchmarks are over 3%, with a few (zlib, for example) in the double
digits.

Review URL: https://codereview.chromium.org/1328783002

Cr-Commit-Position: refs/heads/master@{#30579}

db646fb2

Update V8 DEPS. · 9be35ade

v8-autoroll authored Sep 04, 2015

Rolling v8/build/gyp to 2b17e0b26a93e8c9758c23aec6c554da4ca8f0a9

TBR=machenbach@chromium.org,vogelheim@chromium.org,hablich@chromium.org

Review URL: https://codereview.chromium.org/1305273008

Cr-Commit-Position: refs/heads/master@{#30578}

9be35ade

03 Sep, 2015 5 commits

Remove obsolete functionality from the MacroAssemblers. · 64e3bad3

bmeurer authored Sep 03, 2015

This is uncontroversial the dead code removal part of
https://codereview.chromium.org/1307943013, which was
previously landed, but got reverted because of DOM
breakage that requires more investigation.

TBR=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/1322843005

Cr-Commit-Position: refs/heads/master@{#30577}

64e3bad3

PPC: [es6] Initial steps towards a correct implementation of IsCallable. · 6990fb1c

mbrandy authored Sep 03, 2015

Port 8a378f46

Original commit message:
    This turns the has_instance_call_handler bit on Map into an is_callable
    bit, that matches the spec definition of IsCallable (i.e. instances have
    [[Call]] internal methods).

    Also fix the typeof operator to properly say "function" for everything
    that is callable.

    Also remove the (unused) premature %_GetPrototype optimization from
    Crankshaft, which just complicated the Map bit swap.

R=bmeurer@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com, dstence@us.ibm.com
BUG=

Review URL: https://codereview.chromium.org/1330613005

Cr-Commit-Position: refs/heads/master@{#30576}

6990fb1c

PPC: [es6] Introduce a dedicated JSIteratorResult type. · fdbccd64

mbrandy authored Sep 03, 2015

Port 72bc4b5c

Original commit message:
    Use a single JSIteratorResult type for all implementation provided
    iterator results (i.e. the String, Array and collection iterators,
    and also for generators).  This removes one source of unnecessary
    polymorphism in for-of loops.  It is accomplished by a new intrinsic
    %_CreateIterResultObject() that should be used to create iterator
    result objects from JavaScript builtins (there's a matching factory
    method for C++ code).

    Also restructure the %StringIteratorPrototype%.next() and
    %ArrayIteratorPrototype%.next() functions to be a bit more friendly
    to optimizing compilers.

R=bmeurer@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com, dstence@us.ibm.com
BUG=

Review URL: https://codereview.chromium.org/1325203004

Cr-Commit-Position: refs/heads/master@{#30575}

fdbccd64

PPC: [es6] Re-implement rest parameters via desugaring. · 9628d860

mbrandy authored Sep 03, 2015

Port 510baeac

Original commit message:
    Kills the kRestParameter bailout/disabled optimization, and fixes
    lazily parsed arrow functions with rest parameters.

    Supercedes https://crrev.com/1235153006/

R=caitpotter88@gmail.com, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com, dstence@us.ibm.com
BUG=chromium:508074, v8:2160, v8:2700
LOG=N

Review URL: https://codereview.chromium.org/1318523006

Cr-Commit-Position: refs/heads/master@{#30574}

9628d860

[Tick processor] Add an option to the tick-processor to print the summary. · e1f38de7

gdeepti authored Sep 03, 2015

 - Print the summary excluding other tick information
 - Add test to verify that summary is printed correctly.

BUG=None
LOG=N

R=machenbach@chromium.org

Review URL: https://codereview.chromium.org/1318933004

Cr-Commit-Position: refs/heads/master@{#30573}

e1f38de7