Instead of using the stack, use a temporary integer register
and avoid memory access.

Review URL: http://codereview.chromium.org/6452002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@6696 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

If --debug-code is on, check that returned value and Top::has_pending_exception
agree on exception state.

Review URL: http://codereview.chromium.org/6450004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@6692 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=v8:1109
TEST=test/mjsunit/regress/regress-1109.js

Review URL: http://codereview.chromium.org/6453005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@6684 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/6448001

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@6681 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

For redeclarations of variables that alias the parameters in functions
using arguments, we need to avoid re-visiting the shared variable
rewrite.

BUG=v8:1104

Review URL: http://codereview.chromium.org/6453004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@6679 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

1. Remove unnecessary superlcass LConstant.
2. Use hydrogen accessor instead of duplicating the value.

Review URL: http://codereview.chromium.org/6410120

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@6672 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Provide special case for f.bind(obj).

Review URL: http://codereview.chromium.org/6368138

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@6671 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

- Don't use SmiSub when overflow can occur. It asserts that overflow
  does not happen.

- Actually use CompareICs and signal to crankshaft whether or not smi
  code was inlined.

- Fix bug in CmpI where 64 bits were compared instead of 32 bits.

- Implement Throw, DeferredStackCheck, StoreKeyedFastElement in
  lithium backend.

BUG=
TEST=

Review URL: http://codereview.chromium.org/6312193

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@6669 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Revision 6635 added an assert on IA32 that there were no 'const' parameters.
This assert could be hit at compile time because we compiled the unreachable
body of functions with illegal redeclarations, which are thrown at runtime.

Review URL: http://codereview.chromium.org/6286144

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@6659 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Code review feedback.

Code Review URL: http://codereview.chromium.org/6286043/

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@6652 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=v8:1099
TEST=test/mjsunit/regress/regress-1099.js

Review URL: http://codereview.chromium.org/6246106

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@6649 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Instead of constructing a temporary container for all LOperands of each
instruction, the register works directly on the LIR instructions that
 provide an abstract interface for input/output/temp operands.

This saves allocation of zone memory and speeds up LIR construction,
but makes iterating over all uses in the register allocator slightly
more expensive because environment uses are stored in a linked list of
environments. We can fix this by using a flat representation of LOperands.


Review URL: http://codereview.chromium.org/6352006

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@6638 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

There was an unnecessary load on every statically-resolved context lookup.
Remove it.

This revealed a hidden bug in const initializers inside 'with'.  They claim
to be statically resolved (having slot type CONTEXT) but they occur in a
spot where the runtime context chain and the static scope chain do not
agree.  This is fixed by special casing const initializers in the backend.

Review URL: http://codereview.chromium.org/6384020

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@6635 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Each context in the context chain has a corresponding hydrogen value.
The context values are used for global object lookup and context slot
lookup.  Add simple (non-compound) assignment to context slots.

Review URL: http://codereview.chromium.org/6390003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@6615 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/6287030

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@6614 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Rewrite the lazy deopt patching code on IA32 to use addresses throughout,
rather than offsets and a base address.

Also, rename a couple of ambiguous Code fields from _start to _offset.

Review URL: http://codereview.chromium.org/6334083

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@6611 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/6368074

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@6610 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Record a safepoint with a deoptimization id for throw in optimized code.  We
don't seem to much care what the AST ID is because we will not be using it
for lazy deoptimization (throw doesn't return to the point of throw).  For
hygiene we use the actual ID of the throw expression.  Throw is no longer a
control-flow instruction, but it's followed by an unconditional abnormal
exit.  This is required to insert a simulate between the throw and the exit.

Make our optimized treatment of Function.prototype.apply act like a call and
have side effects.  This ensures that it will get a lazy deoptimization
environment.  Use that deoptimization ID in the safepoint for the call.

Deleting a property was also missing a deoptimization ID, though there was a
deoptimization environment assigned to the instruction.  Record the
environment and use the deoptimization ID at the safepoint.

Review URL: http://codereview.chromium.org/6250105

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@6576 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Fix Math.pow(-0, 0.5) and Math.pow(-0, -0.5).  These are not equal to sqrt(-0) and 1/sqrt(-0).  Add tests for these cases.  Fixes V8 issue 1088.
BUG=1088
TEST=test/mjsunit/math-pow.js

Review URL: http://codereview.chromium.org/6368050

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@6573 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=none
TEST=none

Review URL: http://codereview.chromium.org/6349046

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@6572 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

If we, immediately after the deoptimization, but before actually
running the patched code, get a compacting GC, the addresses from the
calls might no longer be valid.

I have validated that this works by patching the existing code to
always do a compacting gc after we finish deoptimizing. I will create
a real regression test for this, but this includes additional code for
allowing us to force a deopt/opt from javascript test code. I will
land this in a seperate change.


Review URL: http://codereview.chromium.org/6349043

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@6565 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Change OSR stack check patching to use the stack check table to iterate over the calls to stack guards platform independent. Introduce Deoptimizer::PatchStackCheckAt for each platform to perform the platform specific patch at a given pc.

BUG=none
TEST=none

Review URL: http://codereview.chromium.org/6392027

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@6551 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This change caused failures in (out of bounds) keyed loads of strings.

TBR'd.

Review URL: http://codereview.chromium.org/6298019

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@6528 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This stub is used for increment/decrement operations and unary plus.
The resulting code is more compact and faster than calling a JS builtin.


Review URL: http://codereview.chromium.org/6350021

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@6527 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/6323002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@6526 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This reverts r6518.

TBR=ager@chromium.org

Review URL: http://codereview.chromium.org/6359015

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@6519 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/6335016

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@6518 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Deletion of global properties puts 'the hole' in the global property
cell and updates the property details in the property dictionary with
the information that the property has been deleted. When setting
global properties that have been deleted in generated code we just
store the new value in the global property cell. This does not update
the property details in the property dictionary. Therefore, it looks
like the property is not there eventhough it was just reintroduced.

Perform 'the hole' checks in generated code for global property stores
and bail out of ICs and optimized code if storing to a property cell
that contains 'the hole'.

Review URL: http://codereview.chromium.org/6306014

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@6508 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Refactor SafepointTableBuilder::DefineSafepoint and ARM LCodeGen::RecordSafepoint to use an enum for different kinds of safepoints. This change removes a lot of duplicated code and makes it easier to include new kinds of safepoints in the future. The remaining variants of LCodeGen::RecordSafepoint remain as a convinient way to record common safepoint kinds.

BUG=http://code.google.com/p/v8/issues/detail?id=1043
TEST=none

Review URL: http://codereview.chromium.org/6341008

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@6505 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

If we compile a function literal twice with the full code generator,
we must make sure that the labels embedded in the AST are reset.

BUG=1076

Review URL: http://codereview.chromium.org/6339014

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@6496 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

TBR=serya@chromium.org

Review URL: http://codereview.chromium.org/6260021

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@6494 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

stub cache generation.
Review URL: http://codereview.chromium.org/6392003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@6480 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This fixes a crash in the code generator.

BUG=1074

Review URL: http://codereview.chromium.org/6258020

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@6479 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

To avoid deopts a few extra changes were needed:

o Enable megamorphic state for special property loads on
  primitives. We used to flip between monomorphic stubs.
o Extract pure string (no string wrapper support) version of the
  string length stub.

Review URL: http://codereview.chromium.org/6334015

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@6472 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Revert this change again.  Somewhat mysteriously we sometimes get empty
contexts that we do not expect in the context chain.

Review URL: http://codereview.chromium.org/6372013

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@6465 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/6283012

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@6458 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/6279011

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@6457 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Port to ARM and x64:  Record the lazy deoptimization environmnent only at LLazyBailout-instructions.

This is a port of the change http://codereview.chromium.org/6348016/
to ARM and x64 platform.

Review URL: http://codereview.chromium.org/6350011

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@6453 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/6366003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@6452 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/6368013

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@6451 ce2b1a6d-e550-0410-aec6-3dcde31c8c00