This will support breaking in debugger statements in JavaScript files read from the command line.
Review URL: http://codereview.chromium.org/113998

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pointer and parameter pointer slots.

Review URL: http://codereview.chromium.org/118383

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This is a trivial per-row compression:
- short aliases are introduced for events and code creation tags;
- in tick events, offsets are used instead of absolute addresses;
- removed 'code-allocation' event, as it seems not used.

The first two options are depend on the new flag: 'compress-log', which is off by default.

On benchmarks run w/o snapshot, this gives 45% log size reduction.

Review URL: http://codereview.chromium.org/119304


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Review URL: http://codereview.chromium.org/118378

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Scripts now have a compilation type which can be host, eval or JSON. Host scripts are compiled through the API, eval scripts are compiled through call to evan and JSON scripts are compiled as a result of calling JSON.parse.

For scripts scripts compiled through eval the JavaScript function in top of the stack and the pc offset into the code is stored in the script object. This makes it possible to calculate the source position of the eval call later when requested. This information can be obtained through the script mirror object and is part of the script mirror JSON serialization for the debugger protocol.

Moved the enumeration ScripType into class Script and remamed to Type. The new compilation type enumeration is also inside the class Script.

This information is now shown when using the scripts command in he developer shell debugger.
Review URL: http://codereview.chromium.org/119108

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interceptors and dont-delete attributes.

Minor change to the behavior of eval: throw exception when calling
eval in a context for which the global has been detached.  This
matches the behavior of both Firefox and Safari post navigation in the
browser.
Review URL: http://codereview.chromium.org/118374

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http://codereview.chromium.org/113897


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cache to 5 (down from 8). Generations 5, 6, and 7 are 
rarely hit in real browsing sessions (~2% in the best case)
so it seems better to lower the size to avoid carrying around 
too many compiled scripts in the cache.
Review URL: http://codereview.chromium.org/119301

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Review URL: http://codereview.chromium.org/119177

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TBR=whesse@chromium.org,lrn@chromium.org
Review URL: http://codereview.chromium.org/118310

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Review URL: http://codereview.chromium.org/118306


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deferred code snippets are highly stylized.  They always make a call
to a stub or the runtime and then return.  This change takes advantage
of that.

Creating a deferred code object now captures a snapshot of the
registers in the virtual frame.  The registers are automatically saved
on entry to the deferred code and restored on exit.

The clients of deferred code must ensure that there is no change to
the registers in the virtual frame (eg, by allocating which can cause
spilling) or to the stack pointer.  That is currently the case.

As a separate change, I will add either code to verify this constraint
or else code to forbid any frame effect.

The deferred code itself does not use the virtual frame or register
allocator (or even the code generator).  It is raw macro assembler
code.
Review URL: http://codereview.chromium.org/118226

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Review URL: http://codereview.chromium.org/119048

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submitted in revisions 2093, 2094, 2099, and 2106.
There's no evidence that supports that these changes
should be the cause of the unexplained performance
regressions on the intl2 and DHTML page cyclers. 


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2106 to try to isolate a performance regression on the
page cyclers.

I'll roll the changes back in if this doesn't fix the
regression.

TBR=antonm@chromium.org
Review URL: http://codereview.chromium.org/118302

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Change stack alignment on linux to 16 bytes to keep gcc 4.4 happy. 
This fixes the mksnapshot segfault without requiring -fno-tree-vectorize
which just avoided the problem by not generating code with movdqa.


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The problem was I incorrectly treated NULL result as failure to fetch
a property with a getter.  However, if getter returns zero, it is
manifested as NULL pointer (see added test case).

Good news: that gives another boost as before this CL if getter returned
0, I did another slow lookup.

Review URL: http://codereview.chromium.org/119172

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indentation.

Review URL: http://codereview.chromium.org/118234

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Review URL: http://codereview.chromium.org/118115


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Review URL: http://codereview.chromium.org/119171

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Review URL: http://codereview.chromium.org/119082

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Review URL: http://codereview.chromium.org/118229


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Review URL: http://codereview.chromium.org/119112

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Review URL: http://codereview.chromium.org/118163

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Review URL: http://codereview.chromium.org/119078

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Review URL: http://codereview.chromium.org/119081

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into the ecx register and to ensure that there is no frame effect
between the first entry to the deferred code and binding its exit.
Review URL: http://codereview.chromium.org/118157

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external strings so that they are not disposed when running other
tests that rely on only one external string being disposed during its
run.

TBR=kasperl
Review URL: http://codereview.chromium.org/118158

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immediately if holder has this property or saves binary search on holder if
property doesn't belong to holder.  Of course, in the cases when named getter
returns nothing.

That gives ~20% for dom benchmark/Document Object String Get, speeds up overall
dom_perf (not dramatically) and overall score for peacekeeper.  Strange, but DOM
part of peacekeepr runs somewhat slower.
Review URL: http://codereview.chromium.org/118118

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Review URL: http://codereview.chromium.org/119076


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Removed duplicates comments in assembler-x64.cc.

Review URL: http://codereview.chromium.org/119035


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DeferredInlineBinaryOperation::GenerateInlineCode and remove its
definition.  It was only called from one site and was the only
deferred code object that was split that way into fast-case inline and
slow-case stub.

Review URL: http://codereview.chromium.org/119037

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Review URL: http://codereview.chromium.org/113997

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Review URL: http://codereview.chromium.org/118107

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mod so they do not share code with the other binary operations.  They
now preallocate their fixed registers (eax and edx).  There is now no
frame effect between entries to the deferred call to the stub.

Review URL: http://codereview.chromium.org/118110

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My assumption that log initialization happens somewhere near the stack's bottom is true for V8's sample shell but isn't true for Chromium, causing many otherwise valid stack addresses to be thrown out. The solution proposed is to save stack pointer value for the outermost JS function in ThreadLocalTop similar to c_entry_fp.

Implemented only for IA-32. Currently I'm not dealing with profiling on ARM and x86-64 anyway.

Review URL: http://codereview.chromium.org/112082


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Review URL: http://codereview.chromium.org/115920


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GCC version.

BUG=364
TBR=sgjesse@chromium.org
Review URL: http://codereview.chromium.org/118016

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