We use the cvttsd2si (float64-to-int32) instruction to avoid that negative numbers get sign extended in the destination register.

@rodolph: Is sign extension also a thing on arm64? I noticed that also on arm64 a float64-to-int64 instruction is used.

Review URL: https://codereview.chromium.org/1877133004

Cr-Commit-Position: refs/heads/master@{#35466}

BUG=v8:4751
LOG=n
NOTRY=true
TBR=adamk@chromium.org, rmcilroy@chromium.org

Review URL: https://codereview.chromium.org/1891693002

Cr-Commit-Position: refs/heads/master@{#35465}

  The CL #35139 (https://codereview.chromium.org/1775323002) added V8_TARGET_ARCH_IA32 macro in
  src/globals.h.

  X87 is almost same as IA32, So It needs the V8_TARGET_ARCH_X87 macro in src/globals.h too.

BUG=

Review URL: https://codereview.chromium.org/1886233002

Cr-Commit-Position: refs/heads/master@{#35464}

Rolling v8/build/gyp to 6ea68631cdabab9b7c5257657567a785a261692e

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

Review URL: https://codereview.chromium.org/1886223002

Cr-Commit-Position: refs/heads/master@{#35463}

Port 5e9ddf6c

Original commit message:
    * New atomic code stubs for x64, ia32, arm, arm64
    * Add convenience functions JumpIfNotValidSmiValue, JumpIfUintNotValidSmiValue
      to macro-assembler-ia32 (API based on x64 macro assembler)
    * Remove runtime implementation of Atomics.load, the code stub should always be
      called instead
    * Add new test to mjsunit atomics test; check that Smi values of different
      sizes are supported when possible, else fall back to HeapNumbers

    These changes were needed to add another codestub:
    * Bump kStubMajorKeyBits from 7 to 8
    * Reduce ScriptContextFieldStub::kSlotIndexBits from 13 to 12

R=binji@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com, bjaideep@ca.ibm.com
BUG=v8:4614
LOG=N

Review URL: https://codereview.chromium.org/1887823002

Cr-Commit-Position: refs/heads/master@{#35462}

Port 9336f4cc

Original commit message:
    This is useful for escape analysis, and helps upcoming changes to
    type feedback gathering.

R=mvstanton@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com, bjaideep@ca.ibm.com
BUG=

Review URL: https://codereview.chromium.org/1883743004

Cr-Commit-Position: refs/heads/master@{#35461}

* Use proper int64_t printf format qualifier to fix 64-bit sim compile
  on Mac.
* Minor cleanup to ExecuteInstruction() to remove an unncessary
  'processed' variable.

R=jyan@ca.ibm.com,mbrandy@us.ibm.com,michael_dawson@ca.ibm.com
BUG=

Review URL: https://codereview.chromium.org/1889643002

Cr-Commit-Position: refs/heads/master@{#35460}

R=littledan@chromium.org

Review URL: https://codereview.chromium.org/1836183002

Cr-Commit-Position: refs/heads/master@{#35459}

BUG=v8:4203
TEST=mjsunit/asm-wasm
R=titzer@chromium.org,bradnelson@chromium.org,ahaas@chromium.org
LOG=N

Review URL: https://codereview.chromium.org/1887833002

Cr-Commit-Position: refs/heads/master@{#35458}

size_t defined as unsigned long on 31-bit s390.

R=jochen@chromium.org, jfb@chromium.org
TBR=ahaas@chromium.org,bmeurer@chromium.org,yangguo@chromium.org
BUG=

Review URL: https://codereview.chromium.org/1889623002

Cr-Commit-Position: refs/heads/master@{#35457}

Fixes for misnamed toolchain from https://github.com/appcelerator/v8_titanium.

Added a way to specify the NDK path since the Mac versions of the NDK aren't checked into the tools repo.

Disabled a few dependencies which do not build on the Mac but which aren't needed for building usable V8 static libraries.

Made the including of libdl and librt omitted for Mac hosted builds.

BUG=

Review URL: https://codereview.chromium.org/1879793002

Cr-Commit-Position: refs/heads/master@{#35456}

This change implements switch as a balanced if/else tree or break table or
hybrid. A lot of asm.js modules are expected to extensively use switch
alongside function tables that can benefit from a better implementation.

BUG=v8:4203
TEST=mjsunit/asm-wasm
R=titzer@chromium.org,bradnelson@chromium.org,ahaas@chromium.org
LOG=N

Review URL: https://codereview.chromium.org/1838973002

Cr-Commit-Position: refs/heads/master@{#35455}

Revert of [heap] Better integrate handling of aborted compaction pages (patchset #7 id:130001 of https://codereview.chromium.org/1881423003/ )

Reason for revert:
Breaks: https://uberchromegw.corp.google.com/i/client.v8.ports/builders/V8%20Linux%20-%20arm64%20-%20sim%20-%20nosnap%20-%20debug/builds/20

RecordMigratedSlotVisitor is not safe to use on code pages.

Original issue's description:
> [heap] Better integrate handling of aborted compaction pages
>
> - Get rid of fixing up pointers on the main thread
> - Get rid of sweeping on the main thread
>
> Instead:
> - Record (and process afterwards) slots in parallel
> - Add the pages to the concurrent sweeper as pointers have already been fixed
>
> BUG=chromium:581412
> LOG=N
> TEST=cctest/test-compaction/*
>
> Committed: https://crrev.com/2e4f57774d4993f9f98332d3b2469280ee10beca
> Cr-Commit-Position: refs/heads/master@{#35451}

TBR=hpayer@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:581412

Review URL: https://codereview.chromium.org/1890553002

Cr-Commit-Position: refs/heads/master@{#35454}

Reland of (https://codereview.chromium.org/1617503003)

* New atomic code stubs for x64, ia32, arm, arm64
* Add convenience functions JumpIfNotValidSmiValue, JumpIfUintNotValidSmiValue
  to macro-assembler-ia32 (API based on x64 macro assembler)
* Remove runtime implementation of Atomics.load, the code stub should always be
  called instead
* Add new test to mjsunit atomics test; check that Smi values of different
  sizes are supported when possible, else fall back to HeapNumbers

These changes were needed to add another codestub:
* Bump kStubMajorKeyBits from 7 to 8
* Reduce ScriptContextFieldStub::kSlotIndexBits from 13 to 12

BUG=v8:4614
LOG=y
TBR=jarin@chromium.org,bmeurer@chromium.org,rodolph.perfetta@gmail.com,machenbach@chromium.org

Review URL: https://codereview.chromium.org/1617503003

Cr-Commit-Position: refs/heads/master@{#35427}

Review URL: https://codereview.chromium.org/1881383003

Cr-Commit-Position: refs/heads/master@{#35453}

BUG=chromium:603011,chromium:603131
LOG=n

Review URL: https://codereview.chromium.org/1880383003

Cr-Commit-Position: refs/heads/master@{#35452}

- Get rid of fixing up pointers on the main thread
- Get rid of sweeping on the main thread

Instead:
- Record (and process afterwards) slots in parallel
- Add the pages to the concurrent sweeper as pointers have already been fixed

BUG=chromium:581412
LOG=N
TEST=cctest/test-compaction/*

Review URL: https://codereview.chromium.org/1881423003

Cr-Commit-Position: refs/heads/master@{#35451}

Add relocatable pointers for wasm memory references that need to be
updated when wasm GrowMemory is used. Code generator changes to accept
relocatable constants as immediates.

Port 52148c41

TEST=
BUG=

Review URL: https://codereview.chromium.org/1886723003

Cr-Commit-Position: refs/heads/master@{#35450}

Left trimming assumes that nobody other than the JSArray has a reference to the
backing store. Sampling heap profiler may profile the backing store and keep a
reference too it. This reference was never updated on a left-trim, causing a
crash.

R=alph@chromium.org, hpayer@chromium.org, mattloring@google.com
BUG=

Review URL: https://codereview.chromium.org/1885723002

Cr-Commit-Position: refs/heads/master@{#35449}

- Get rid of temp lists and use a lock-protected deque instead

BUG=

Review URL: https://codereview.chromium.org/1886723002

Cr-Commit-Position: refs/heads/master@{#35448}

Operand values in Bytecodes.DecodeBytecodeAndOperands test are encoded
in little endian format. The test calls Bytecodes::Decode function which
reads the operands but the values are byte swapped on big endian
machines. Added big endian encoded data which decodes correctly on BE
machines.

BUG=

Review URL: https://codereview.chromium.org/1881423002

Cr-Commit-Position: refs/heads/master@{#35447}

Add the stubs for JavaScript's '<<', '>>' and '>>>' operators and lets Ignition make use of them in the respective bytecode handlers.

Committed: https://crrev.com/599369d6b8e1a5ccdca857def06eebcbacf47dd4
Cr-Commit-Position: refs/heads/master@{#35433}

Review URL: https://codereview.chromium.org/1881003002

Cr-Commit-Position: refs/heads/master@{#35446}

Despite man page documentation:

    -f Display the symbol table of a dynamic library flat (as one
       file not separate modules).

`nm` on mac treats `-f` as a shorthand for `-format`. The `-f` argument
does not seem to be required, so just remove it completely.

(For `-format` documentation - see `nm --help` on mac).

BUG=

Review URL: https://codereview.chromium.org/1840633002

Cr-Commit-Position: refs/heads/master@{#35445}

Revert of [stubs] Introduce LeftShift, SignedRightShift and UnsignedRightShift stubs. (patchset #3 id:40001 of https://codereview.chromium.org/1881003002/ )

Reason for revert:
Needed to revert https://codereview.chromium.org/1617503003

Original issue's description:
> [stubs] Introduce LeftShift, SignedRightShift and UnsignedRightShift stubs.
>
> Add the stubs for JavaScript's '<<', '>>' and '>>>' operators and lets Ignition make use of them in the respective bytecode handlers.
>
> Committed: https://crrev.com/599369d6b8e1a5ccdca857def06eebcbacf47dd4
> Cr-Commit-Position: refs/heads/master@{#35433}

TBR=bmeurer@chromium.org,epertoso@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Review URL: https://codereview.chromium.org/1880413002

Cr-Commit-Position: refs/heads/master@{#35444}

Revert of [Atomics] code stubs for atomic operations (patchset #28 id:530001 of https://codereview.chromium.org/1617503003/ )

Reason for revert:
[Sheriff] Roll was reverted. Please fix unused methods, see:
https://codereview.chromium.org/1884913002/

https://build.chromium.org/p/tryserver.chromium.win/builders/win_clang/builds/5585/steps/compile%20%28with%20patch%29/logs/stdio

Original issue's description:
> [Atomics] code stubs for atomic operations
>
> * New atomic code stubs for x64, ia32, arm, arm64
> * Add convenience functions JumpIfNotValidSmiValue, JumpIfUintNotValidSmiValue
>   to macro-assembler-ia32 (API based on x64 macro assembler)
> * Remove runtime implementation of Atomics.load, the code stub should always be
>   called instead
> * Add new test to mjsunit atomics test; check that Smi values of different
>   sizes are supported when possible, else fall back to HeapNumbers
>
> These changes were needed to add another codestub:
> * Bump kStubMajorKeyBits from 7 to 8
> * Reduce ScriptContextFieldStub::kSlotIndexBits from 13 to 12
>
> BUG=v8:4614
> LOG=y
>
> Committed: https://crrev.com/10b5febe11b318cfef130abae343183ac862e60d
> Cr-Commit-Position: refs/heads/master@{#35427}

TBR=jarin@chromium.org,bmeurer@chromium.org,rodolph.perfetta@gmail.com,binji@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:4614

Review URL: https://codereview.chromium.org/1884883003

Cr-Commit-Position: refs/heads/master@{#35443}

TBR=hablich@chromium.org
NOTRY=true

Review URL: https://codereview.chromium.org/1885863003

Cr-Commit-Position: refs/heads/master@{#35442}

Fix after https://codereview.chromium.org/1887583002/

TBR=hablich@chromium.org
NOTRY=true

Review URL: https://codereview.chromium.org/1881163003

Cr-Commit-Position: refs/heads/master@{#35441}

Visit the Optimized Code Map on first call rather than closure creation.

This is useful for escape analysis, and helps upcoming changes to
type feedback gathering.

Adding notry due to crashed builders:
NOTRY=true
BUG=

Committed: https://crrev.com/9336f4cc6d25d39a128176679a70dbd13a6d946e
Cr-Commit-Position: refs/heads/master@{#35395}

Review URL: https://codereview.chromium.org/1670143002

Cr-Commit-Position: refs/heads/master@{#35440}

Annotate generator functions and loops therein with the number of contained
yields.  This information will eventually be used by the bytecode generator.

R=bmeurer@chromium.org
BUG=v8:4907
LOG=n

Review URL: https://codereview.chromium.org/1877403003

Cr-Commit-Position: refs/heads/master@{#35439}

A new script, bytecode_dispatches_report.py reads the table produced
when FLAG_trace_ignition_dispatches is enabled and produces either a
report of top source-destination pairs, or a heatmap that can be
viewed interactively and saved to file.

BUG=v8:4899
LOG=N

Review URL: https://codereview.chromium.org/1869423002

Cr-Commit-Position: refs/heads/master@{#35438}

Check if a previous run left an inconsistent state behind.
The check is right before trying to push a new state as then
all information is available, like commit message and tag
name.

This is still only a band-aid. If gnumbd is down for a
longer period, an unprocessed commit won't be found, but
the push attempt will still fail.

Review URL: https://codereview.chromium.org/1887583002

Cr-Commit-Position: refs/heads/master@{#35437}

... to avoid potential stack overflow when updating happens near the stack limit.

BUG=chromium:599440
LOG=Y

Review URL: https://codereview.chromium.org/1884653002

Cr-Commit-Position: refs/heads/master@{#35436}

This is very similar to the existing rule for a GTAGS file, and reuses
parts of it (the gtags.files file).

R=ahaas@chromium.org, mstarzinger@chromium.org, titzer@chromium.org
BUG=

Review URL: https://codereview.chromium.org/1873253002

Cr-Commit-Position: refs/heads/master@{#35435}

R=hpayer@chromium.org
BUG=chromium:581412
LOG=N

Review URL: https://codereview.chromium.org/1886493003

Cr-Commit-Position: refs/heads/master@{#35434}

Add the stubs for JavaScript's '<<', '>>' and '>>>' operators and lets Ignition make use of them in the respective bytecode handlers.

Review URL: https://codereview.chromium.org/1881003002

Cr-Commit-Position: refs/heads/master@{#35433}

- Additionally allow to commit late lists to an already started sweeper

BUG=chromium:581412
LOG=N

Review URL: https://codereview.chromium.org/1871423002

Cr-Commit-Position: refs/heads/master@{#35432}

This patch replaces the unused 'take_snapshot' parameter on FatalProcessOutOfMemory()
with a 'is_heap_oom' parameter. The parameter is set to true on error paths where the
JS heap is out of memory, as distinct from a malloc() failure i.e. process out of memory.
The message output to stderr or passed to embedding applications via FatalErrorCallback
is 'Javascript heap out of memory' rather than 'process out of memory'.

BUG=

R=jochen@chromium.org, verwaest@chromium.org, michael_dawson@ca.ibm.com

Review URL: https://codereview.chromium.org/1873443002

Cr-Commit-Position: refs/heads/master@{#35431}

Instead of looking at the top JavaScriptFrame, take the needed information as
arguments.  This is in preparation of the new generators implementation.

R=adamk@chromium.org, bmeurer@chromium.org
BUG=v8:4907
LOG=n

Review URL: https://codereview.chromium.org/1883443003

Cr-Commit-Position: refs/heads/master@{#35430}

The StringAddStub can automatically convert arbitrary inputs according
to the semantics for the addition operator, if one side is already a
string.

R=jarin@chromium.org

Review URL: https://codereview.chromium.org/1881413002

Cr-Commit-Position: refs/heads/master@{#35429}

Rolling v8/buildtools to de013cf87971d0ab40596f2275a633432c908052

Rolling v8/tools/clang to 05a5cb33164e3c656a3375a1614ab350ca799215

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

Review URL: https://codereview.chromium.org/1883703003

Cr-Commit-Position: refs/heads/master@{#35428}

* New atomic code stubs for x64, ia32, arm, arm64
* Add convenience functions JumpIfNotValidSmiValue, JumpIfUintNotValidSmiValue
  to macro-assembler-ia32 (API based on x64 macro assembler)
* Remove runtime implementation of Atomics.load, the code stub should always be
  called instead
* Add new test to mjsunit atomics test; check that Smi values of different
  sizes are supported when possible, else fall back to HeapNumbers

These changes were needed to add another codestub:
* Bump kStubMajorKeyBits from 7 to 8
* Reduce ScriptContextFieldStub::kSlotIndexBits from 13 to 12

BUG=v8:4614
LOG=y

Review URL: https://codereview.chromium.org/1617503003

Cr-Commit-Position: refs/heads/master@{#35427}