This involves:
- Enabling the tail call optimization reducer in all cases.
- Adding an addition flag to CallFunctionParameters to mark call sites
  that can be tail-called enabled.
- Only set the tail-call flag for %_CallFunction.

R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/1216933011

Cr-Commit-Position: refs/heads/master@{#29436}

Support 32-bit cmp with shift/extend by reusing the existing add/sub shift and
extend code.

Review URL: https://codereview.chromium.org/1218103005

Cr-Commit-Position: refs/heads/master@{#29435}

port 7281f801 (r29384)

    Fix a bug in R29384.

original commit message:

    Revert "Revert relanded strong property access CL"

    Regression issues should be solved. Initial patchset is the original, subsequent patchsets are the fixing modifications.

    This reverts commit 4ac7be56.

BUG=

Review URL: https://codereview.chromium.org/1210873007

Cr-Commit-Position: refs/heads/master@{#29434}

port 7015fd20 (r29402)

original commit message:

    Up until now the context register was listed explicitly in each stub's
    CallInterfaceDescriptor. This was problematic, because it was listed
    first in the list of register parameters--which is fine for Crankshaft,
    which is more or less built to handle the context as the first
    parameter-- but not ideal for TurboFan, which adds the context at
    the end of all function parameters. Now the context register is no
    longer in the register list and can be handled appropriately by both
    compilers. Specifically, this allows the FunctionType specified for
    each CallInterfaceDescriptor to exactly match the parameter register
    list.

BUG=

Review URL: https://codereview.chromium.org/1216543004

Cr-Commit-Position: refs/heads/master@{#29433}

port b4275a70 (r29378)

original commit message:

    This change makes possible to save and restore the FP registers
    in the Prologue and Return parts for the CallAddress kind functions.

BUG=

Review URL: https://codereview.chromium.org/1214573006

Cr-Commit-Position: refs/heads/master@{#29432}

Rolling v8/third_party/icu to 7fe225d77f307fdbe24695179a84336ef95c1253

TBR=machenbach@chromium.org

Review URL: https://codereview.chromium.org/1225463002

Cr-Commit-Position: refs/heads/master@{#29431}

Conditionally including Array and TypedArray methods seems to cause
a slowdown in V8 context creation, possibly due to the new code added.

BUG=chromium:504629
R=adamk@chromium.org
LOG=Y

Review URL: https://codereview.chromium.org/1215863003

Cr-Commit-Position: refs/heads/master@{#29430}

R=hpayer@chromium.org
BUG=

Review URL: https://codereview.chromium.org/1217813012

Cr-Commit-Position: refs/heads/master@{#29429}

This was added in https://chromium.googlesource.com/v8/v8/+/4a709dd65,
but the only check for it that remained in the final patch is inside
a DCHECK. It appears that the approach for checking use of class names
in methods evolved quite a bit over the review of the original patch.

Review URL: https://codereview.chromium.org/1219993002

Cr-Commit-Position: refs/heads/master@{#29428}

BUG=

Review URL: https://codereview.chromium.org/1220883006

Cr-Commit-Position: refs/heads/master@{#29427}

This is more consistent with the DOM API, and is clearer w.r.t. which values
are available in the lexical environment of the Worker.

BUG=chromium:497295
R=jarin@chromium.org
LOG=n

Review URL: https://codereview.chromium.org/1218553004

Cr-Commit-Position: refs/heads/master@{#29426}

Disabling rsqrt and recip for mips32r1 in assembler, disassembler and simulator

Review URL: https://codereview.chromium.org/1221663006

Cr-Commit-Position: refs/heads/master@{#29425}

TBR=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/1213683005.

Cr-Commit-Position: refs/heads/master@{#29424}

Checking for native context is faster than checking for global object. Additionally it speeds up the case were it actually is the native context, while not slowing down the alternative case. The bootstrapper only needs to access the native context from the native context, so this avoids the expensive fallback.

BUG=

Review URL: https://codereview.chromium.org/1214903017

Cr-Commit-Position: refs/heads/master@{#29423}

TBR=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/1220053002.

Cr-Commit-Position: refs/heads/master@{#29422}

Port 7015fd20

Original commit message:
    Up until now the context register was listed explicitly in each stub's
    CallInterfaceDescriptor. This was problematic, because it was listed
    first in the list of register parameters--which is fine for Crankshaft,
    which is more or less built to handle the context as the first
    parameter-- but not ideal for TurboFan, which adds the context at
    the end of all function parameters. Now the context register is no
    longer in the register list and can be handled appropriately by both
    compilers. Specifically, this allows the FunctionType specified for
    each CallInterfaceDescriptor to exactly match the parameter register
    list.

R=danno@chromium.org, dstence@us.ibm.com, michael_dawson@ca.ibm.com
BUG=

Review URL: https://codereview.chromium.org/1218463004

Cr-Commit-Position: refs/heads/master@{#29421}

Fixes debug mode assertions.

TEST=cctest/test-run-machops/RunChangeUint32ToFloat64_B
BUG=

Review URL: https://codereview.chromium.org/1211143003

Cr-Commit-Position: refs/heads/master@{#29420}

BUG=chromium:505998
LOG=n

Review URL: https://codereview.chromium.org/1222543003

Cr-Commit-Position: refs/heads/master@{#29419}

BUG=
R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/1215593005.

Cr-Commit-Position: refs/heads/master@{#29418}

This makes sure that all pointer fields in an entry in the optimized
code map are considered weak, not just the code object. If just one
field of an entry dies, then the whole entry dies.

R=hpayer@chromium.org

Review URL: https://codereview.chromium.org/1217813013

Cr-Commit-Position: refs/heads/master@{#29417}

This change makes the patching logic less prone to errors in the
face of variable instruction mov sequences.

R=dstence@us.ibm.com, michael_dawson@ca.ibm.com
BUG=

Review URL: https://codereview.chromium.org/1213383003

Cr-Commit-Position: refs/heads/master@{#29416}

This extends the existing support for --noflush-optimized-code-cache
mechanism to the newly added context-independent code entry in the
optimized code map. Note that this machanism is still off by default.

R=hpayer@chromium.org

Review URL: https://codereview.chromium.org/1220883002

Cr-Commit-Position: refs/heads/master@{#29415}

This change changes bootstrapping semantics for intercepted global objects. Unlike before, we'll now also call into the interceptor during bootstrapping. This affects properties loaded from within the runtime, such as global.Array and global.Symbol. The embedder will need to make sure that those values are the expected values during bootstrapping.

BUG=chromium:505998
LOG=n

Review URL: https://codereview.chromium.org/1220813005

Cr-Commit-Position: refs/heads/master@{#29414}

port 7a63bf77 (r29358).

original commit message:

    This makes new.target work in [[Call]] and [[Construct]] of ordinary
    functions.

    We achieve this by introducing a new construct stub for functions that
    uses the new.target variable. The construct stub pushes the original
    constructor just above the receiver in the construct frame.

BUG=

Review URL: https://codereview.chromium.org/1217083004

Cr-Commit-Position: refs/heads/master@{#29413}

port 876ae425 (r29292).

original commit message:

   The stack layout was different for different ports.

BUG=

Review URL: https://codereview.chromium.org/1219823002

Cr-Commit-Position: refs/heads/master@{#29412}

port 8a3cf4ec (r29310).

BUG=

Review URL: https://codereview.chromium.org/1213373002

Cr-Commit-Position: refs/heads/master@{#29411}

port 9e7af9ef (r29280).

original commit message:

    It's useful for the megamorphic keyed store case to not require a
    vector and slot as input. Analogous to the load case, we have a dummy
    one-ic-slot vector to aid. Since the only kind of MISS is for
    megamorphic cache stub failures, we don't need the real vector.
    The reason is that megamorphic cache stub failures don't result in any
    change to the type feedback vector state.

BUG=

Review URL: https://codereview.chromium.org/1212653011

Cr-Commit-Position: refs/heads/master@{#29410}

port c1a4f747 (r29281).

original commit message:

   The idea is that TurboFan can use this information for more intelligent
   inlining.

BUG=

Review URL: https://codereview.chromium.org/1213723005

Cr-Commit-Position: refs/heads/master@{#29409}

port a58ba8d8 (r29279).

original commit message:

    This introduces some initial building blocks for calling out to
    C/C++ functions directly from TurboFan generated code objects.

BUG=

Review URL: https://codereview.chromium.org/1214903007

Cr-Commit-Position: refs/heads/master@{#29408}

 This CL fixes the following situations:
    1, Operands are -0.0 or 0.0. it always return right value.
    1, Operands contains NaN. it always return right value.

BUG=

Review URL: https://codereview.chromium.org/1214893004

Cr-Commit-Position: refs/heads/master@{#29407}

port c019d7f4 (r29248).

original commit message:

    Use big-boy Types to annotate interface descriptor parameters

    - Thread Type::FunctionType through stubs and the TF pipeline.
    - Augment Typer to decorate parameter nodes with types from
      a Type::FunctionType associated with interface descriptors.
    - Factor interface descriptors into platform-specific and
      platform-independent components so that all descriptors share
      a common Type::FunctionType for all platforms.

BUG=

Review URL: https://codereview.chromium.org/1210463002

Cr-Commit-Position: refs/heads/master@{#29406}

R=hpayer@chromium.org

Review URL: https://codereview.chromium.org/1216153004

Cr-Commit-Position: refs/heads/master@{#29405}

R=machenbach@chromium.org
BUG=494641
LOG=N
NOTRY=true

Review URL: https://codereview.chromium.org/1217173003

Cr-Commit-Position: refs/heads/master@{#29404}

R=hpayer@chromium.org

Review URL: https://codereview.chromium.org/1218003003

Cr-Commit-Position: refs/heads/master@{#29403}

Up until now the context register was listed explicitly in each stub's
CallInterfaceDescriptor. This was problematic, because it was listed
first in the list of register parameters--which is fine for Crankshaft,
which is more or less built to handle the context as the first
parameter-- but not ideal for TurboFan, which adds the context at
the end of all function parameters. Now the context register is no
longer in the register list and can be handled appropriately by both
compilers. Specifically, this allows the FunctionType specified for
each CallInterfaceDescriptor to exactly match the parameter register
list.

Review URL: https://codereview.chromium.org/1211333003

Cr-Commit-Position: refs/heads/master@{#29402}

This operator< overload is rather dangerous for handles. And we don't
actually need a std::set in the chunk builder, since duplicates are
automatically eliminated later when the code dependencies are committed.

R=jarin@chromium.org

Review URL: https://codereview.chromium.org/1214573004

Cr-Commit-Position: refs/heads/master@{#29401}

We now consistently ignore native and extension scripts for debugging. Only native scripts and extension scripts can disallow lazy compilation. So we can make sure that break points are only set to code that are compiled with debug break slots.

R=mvstanton@chromium.org

Review URL: https://codereview.chromium.org/1216193002

Cr-Commit-Position: refs/heads/master@{#29400}

Rolling v8/third_party/icu to 1b697da5c2c0112e2b70e7e75d3e3d985f464a8f

TBR=machenbach@chromium.org

Review URL: https://codereview.chromium.org/1217893007

Cr-Commit-Position: refs/heads/master@{#29399}

port 8196c28a (r29238).

original commit message:

  JSConstructStub for subclass constructors instead locates new.target in
  a known location on the stack.

BUG=

Review URL: https://codereview.chromium.org/1207613003

Cr-Commit-Position: refs/heads/master@{#29398}

port 882055ff (r29082).

   The original CL covers part of X87 port. This CL addes the missing changes.

original commit message:

  - fix truthfulness of comments
    - use InitializeFieldsWithFiller more consistently
    - use unsigned comparisons for pointers

    No change in functionality intended.

    Bonus: improve JavaScriptFrame::Print() for an enhanced debugging experience:

BUG=

Review URL: https://codereview.chromium.org/1210153007

Cr-Commit-Position: refs/heads/master@{#29397}