specification under development. The optimizations are patterned after
those previously done for CanvasPixelArray. This CL adds all of the
necessary framework but continues to use the generic KeyedLoadIC and
KeyedStoreIC code, to create a baseline for benchmarking purposes. The
next CL will add the optimized ICs to ic-ia32.cc and ic-x64.cc.

These new CanvasArray types have different semantics than
CanvasPixelArray; out-of-range values are clamped via C cast
semantics, which is cheaper than the clamping behavior specified by
CanvasPixelArray. Out-of-range indices raise exceptions instead of
being silently ignored.

As part of this work, pulled FloatingPointHelper::AllocateHeapNumber
up to MacroAssembler on ia32 and x64 platforms. Slightly refactored
KeyedLoadIC and KeyedStoreIC. Fixed encoding for fistp_d on x64 and
added a few more instructions that are needed for the new ICs. The
test cases in test-api.cc have been verified by hand to exercise all
of the generated code paths in the forthcoming specialized ICs.

Review URL: http://codereview.chromium.org/293023

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(Not yet fully functional)

Review URL: http://codereview.chromium.org/201042


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by using r10 to point to a list of common root objects.
This time we also disable a debugger test on ARM that
has never worked, but with this change sometimes
crashes.
Review URL: http://codereview.chromium.org/174317

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Original CL:

http://codereview.chromium.org/171041
Review URL: http://codereview.chromium.org/171089

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This cuts down on code size and reloc work.
Review URL: http://codereview.chromium.org/171041

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  indexed property accesses.
- The IC stubs have not been updated to handle these directly, but
  at least we do not have to leave the VM to access bytes.

Review URL: http://codereview.chromium.org/159263

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@2549 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Many X64 bugs have been due to the difference between (unaligned) Array::kHeaderSize and (aligned) FixedArray::kHeaderSize.
Review URL: http://codereview.chromium.org/155687

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@2502 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

the performance issue with number dictionaries.

TBR=kmillikin@chromium.org

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Review URL: http://codereview.chromium.org/155350

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well.

Review URL: http://codereview.chromium.org/155459

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Review URL: http://codereview.chromium.org/155373

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Review URL: http://codereview.chromium.org/149175

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Review URL: http://codereview.chromium.org/151193

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Changed the global object representation.The global object is now always in dictionary (slow) mode with each of its properties stored in a cell object. A cell object has one field containing the actual value for the property. Inline caches for access to global properties which uses direct to the cell are now created for load, store and call to properties of the global object. When properties of the global object are deleted the cell for that property is kept with an indcation of that the property is deleted.Added counters to track the use of the global property inline caches.Added additional information on IC's in the disassembler.
Review URL: http://codereview.chromium.org/151019

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Make sure that the IC is always hit when debugging and make sure to
restore the fast case when leaving the debugger.
Review URL: http://codereview.chromium.org/125044

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Review URL: http://codereview.chromium.org/119353

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called from within a loop or not.  In the past we lost the
information if a call site went megamorphic before a lazily
compiled callee was called for the first time.  Now we track
that correctly (this is an issue that affects richards).
We still don't manage to track the in-loop state through a
constructor call, since constructor calls use LoadICs instead
of CallICs.  This issue affects delta-blue.  So in this patch
we assume that lazy compilations that don't happen through a
CallIC happen from inside a loop.  I have an idea to fix this
but this patch is big enough already.
With our improved tracking of in-loop state I have switched
off the inlining of in-object loads for code that is not in
a loop.  This benefits compile speed.  One issue is that
eagerly compiled code now doesn't get the in-object loads
inlined.  We need to eagerly compile less code to fix this.
Review URL: http://codereview.chromium.org/115744

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This issue was raised by Brett Wilson while reviewing my changelist for readability. Craig Silverstein (one of C++ SG maintainers) confirmed that we should declare one namespace per line. Our way of namespaces closing seems not violating style guides (there is no clear agreement on it), so I left it intact.

Review URL: http://codereview.chromium.org/115756


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TBR=erik.corry@gmail.com

Review URL: http://codereview.chromium.org/99123

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- Added lazily loaded JSON object.


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Move ia32 and arm specific files to subdirectories to make it easier to add more backends.

Review URL: http://codereview.chromium.org/92068


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For keyed IC loads setting a break point now ensures that the inlined code is not used. When the break point is set the inlined map check is changed to fail causing the inlined code not to be used but the IC to be called. As long at the break point is set the map check will stay invalid.
Review URL: http://codereview.chromium.org/87025

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* Move ARM coverage code to ARM-specific file and add missing
file to cover.
Review URL: http://codereview.chromium.org/88025

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(at the moment only if we do not need to allocate a heap number).
Find a few more oportunities to avoid heap number allocation on IA32.
Add some infrastructure to test coverage of generated ARM code in our
tests.
Review URL: http://codereview.chromium.org/67163

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Review URL: http://codereview.chromium.org/18094


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calling a stub.  The map to check against is unknown when generating
the code, so we patch the map check in the IC initialization code.

Loop nesting is currently not tracked on ARM.  I'll file feature
request bug reports for implementing this on ARM and add the number to
the TODOs before I commit.
Review URL: http://codereview.chromium.org/16409

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dictionary probing respects access check bit.
Review URL: http://codereview.chromium.org/13663

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Review URL: http://codereview.chromium.org/11322

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Added stats counter support in macro-assembler-arm.*.

Review URL: http://codereview.chromium.org/11277

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not to return functions that have not been loaded.

This fixes crashes on expedia.com:

  http://code.google.com/p/chromium/issues/detail?id=4526
Review URL: http://codereview.chromium.org/11272

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Several functions are not complete yet, always fall back to slow case.
It fixes test-api/AccessControlIC test.

Review URL: http://codereview.chromium.org/10624

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lenght optimization.  Here is the fix: check that the instance type
not the receiver is JS_VALUE_TYPE.

Review URL: http://codereview.chromium.org/8656

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Review URL: http://codereview.chromium.org/8620

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IC stubs for calls just before invoking the target
function instead of doing it before resolving the
function.
Review URL: http://codereview.chromium.org/8192

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Review URL: http://codereview.chromium.org/8193

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where the receiver needs to be patched with the proxy
and get ready of unnecessary function patching on ARM.


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Review URL: http://codereview.chromium.org/7420

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