This re-applies r4220 and r4233, which was reverted in r4254 due to a bug. This bug has now been fixed, with the only change being line 2884 changed from

  __ SmiTag(left_side->reg());

to

  __ SmiTag(operand->reg());

Added a regression test.

BUG=http://crbug.com/39160
TEST=test/mjsunit/regress/regress-crbug-39160.js

Review URL: http://codereview.chromium.org/1251009

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@4261 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/1325004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@4260 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/1223006

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@4259 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/1225005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@4258 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Use correct constants for min/max-int.

Review URL: http://codereview.chromium.org/1239004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@4257 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Instead of testing the value of a constant frame element to determine
the type we compute its type information at construction time.

This speeds up querying the type information during code generation.

This change also adds support for Integer32 constants and sets 
the type information accordingly.

Review URL: http://codereview.chromium.org/1277001

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@4256 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This reverts svn revisons r4220 and r4233.

Review URL: http://codereview.chromium.org/1279001

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@4254 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

can be used to use the same global object for different contexts at
different points in time.

Review URL: http://codereview.chromium.org/1207003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@4253 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/1275001

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@4252 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

1) Exposes Local<Context> v8::Debug::GetDebugContext().
Rationale: We can already get debugger context instance using various workarounds,
so exposing it explicitly in the API only makes things more clear.

2) Removes debugger.HasJavaScriptFrames() requirement for entering debugger context.
Rationale: Sometimes we'd like to call into debugger from the external native code.

3) Makes Debugger v8::Debug::Call execute on debugger context's global object.
Rationale: This is somewhat arguable, but temporary measure. We've agreed that we
should introduce a DebugAPI object that would expose necessary API in the debug-delay.
The problem is that it would take some time to define this API and it is not really
convenient to do that on the v8 land given the difference in v8 / host lifecycle.
The plan is to compose this API as a Debug.* wrapper outside v8 by means of exposing
debugger context's global object here, and once API settles down, upstream it to v8 and
start making Debug::Calls on this new DebugAPI object instead.


git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@4251 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This change adds two new type attributes to  the lattice
defined in the class NumberInfo. Currently the new types
are not used yet.

I plan to rename NumberInfo into TypeInfo as a separate change.

Review URL: http://codereview.chromium.org/1249002

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and test failures.

TBR=serya@chromium.org
Review URL: http://codereview.chromium.org/1269003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@4249 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

TBR=fschneider@chromium.org

Review URL: http://codereview.chromium.org/1257002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@4248 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/1217007

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@4247 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

As part of aggressive dead code elimination, we initially assume all
flow-graph instructions are not live.  We mark those that are critical
and recursively all their children.  The children of variable
references (VariableProxies occurring as rvalues) include all their
reaching definitions.

Review URL: http://codereview.chromium.org/1159005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@4246 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/1247003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@4245 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/1225003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@4243 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

By oversight kPointerSize more fields were passed.

BUG=39128

Review URL: http://codereview.chromium.org/1265001

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@4242 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

It converts the number to "canonical" form removing insignificant digits,
leading zerroes and spaces what guarantees to fit a fixed size buffer and
does not changes result of strtod.

Review URL: http://codereview.chromium.org/1096002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@4241 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/1181001

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@4240 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/1217006

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@4237 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/1084018

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@4236 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/1118008

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@4235 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This lands http://codereview.chromium.org/1018001.

Patch by Alexandre Rames <alexandre.rames@gmail.com> from Sigma Designs Inc.

Mads, please just have to look at the new flag --disable-native-files (two files not in the mips directory).
Review URL: http://codereview.chromium.org/1140004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@4234 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/1108006

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@4233 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Fix bug http://code.google.com/p/v8/issues/detail?id=659. Move the limits check for date before the time zone offset is applied.

Review URL: http://codereview.chromium.org/1075016

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@4232 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

registration of external references in Proxy objects).
I moved the declaration of the two functions to stub-cache.h
because with all the types they use it's hard to declare them
anywhere else.  But the actual definition is still in runtime.cc
near to the place where they are used.
Review URL: http://codereview.chromium.org/1079012

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Review URL: http://codereview.chromium.org/1089004

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For now this trick is only done to objects in new space, see comments
for reasons.

Review URL: http://codereview.chromium.org/1076010

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@4229 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/993002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@4228 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Previously we marked compare operations that occurred as for loop
conditions so as to avoid inlining the floating-point code for them.
Begin marking all expressions that occur as any loop condition
(because they are never dead code).

Review URL: http://codereview.chromium.org/1074009

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Author: Ilya Tikhonovsky <loislo@chromium.org>
Original issue: http://codereview.chromium.org/1094002

TBR=sgjesse@chromium.org

Review URL: http://codereview.chromium.org/1165004

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Review URL: http://codereview.chromium.org/1111011

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@4225 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This change adds a data-flow pass to statically determine
if a variable contains a primitive type.

It requires building the flow graph and computing reaching
definitions as pre-requisites. The analysis annotates all
VariableProxy nodes with the result.

Review URL: http://codereview.chromium.org/1132005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@4224 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Modify FastD2I to use static_cast instead of lrint(). Benchmarks show that it's much faster this way.

Review URL: http://codereview.chromium.org/1128010

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@4223 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

It appears that semi-automatic changes made to test's code were
incorrect. v8::Script::Compile returns wrapped JSFunction,
not SharedFunctionInfo.

Review URL: http://codereview.chromium.org/1169002

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is replaced by src/liveedit-debugger.js.
Review URL: http://codereview.chromium.org/1158005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@4221 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Inline floating point compare instead of calling the stub when the following conditions are met:
  * Code is in a loop
  * Compare is not a for loop condition
  * Compare is not an equal comparison

This inlined code handles heap number to heap number and heap number to smi compare. It can also handle smi to smi compare, but whenever there is a chance of comparing two smis the smi compare is inlined before the inlined floating point compare. Support for non SSE2 hardware is included.

A new set of variants of the compare stub without the floating point comparison code is called if the inline comapre fails due to the operands not beeing heap numbers or smis.

The virtual frame has been extended with a branch taking two live results to be carried through to the destination. This makes this change much simpler as the inlined code have two live results in registers and a number of bailouts.

CompareStub::GetName needs to be updated as well. I will do that as a separate change.

Also inlined equality check if both operands can't be NaN. This can only provide positive equals if it is the same object.
Review URL: http://codereview.chromium.org/1117011

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Review URL: http://codereview.chromium.org/1153008

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scripts (either a JSFunction or a SharedFunctionInfo).
Review URL: http://codereview.chromium.org/1077010

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