We used to rebuild it in Scope::Analyze but this might lead to mismatch between scopes seen by parser during the first and the second parse of the function.

BUG=v8:1230

Review URL: http://codereview.chromium.org/6646017

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@7110 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/6621071

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@7109 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/6647019

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@7108 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/6649020

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@7107 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Worth mentioning:
- Specialized versions of pixel array and store/loads inside the generic stubs have been removed, since to have parity for all external arrays, 8 different versions would have to be inlined/checked.
- There's a new constant in v8.h for external arrays with pixel array elements.

Review URL: http://codereview.chromium.org/6546036

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@7106 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/6647018

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@7100 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Refactor construction of switch statements so it doesn't use class
HSubgraph.

There are also a few improvements.  We do not use an auxiliary list of
comparisons because they're embedded as a linked list in the graph
under construction.  We share a common break block for all breaks from
the same switch.  We do not insert empty blocks unless necessary to
maintain edge-split form.

There is also a bug fix.  The entry to a clause body is a potential
join and must have a join ID set, otherwise deoptimization within the
body can go to an unpredictable place in the unoptimized code.

Review URL: http://codereview.chromium.org/6650021

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@7099 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

The change r7079 could allocate a few small code objects in large object space. Therefore the assert is no longer valid.
Review URL: http://codereview.chromium.org/6647017

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@7098 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Non-moveable code-stube are allocated in large object space. They are only required on ARM where the different C-entry stubs are required to never move.

This gets rid of pre-computing these stubs and hope that they never move. Also for crankshaft the C-entry stub which saved doubles is not generated in the snapshot so it ends up being generated at runtime and potentially move.
Review URL: http://codereview.chromium.org/6626072

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@7097 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/6648028

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@7096 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This change uses ZoneObject as base class for our jumptable entry. In
addition this change refactors the JumpTableEntry a bit.

Review URL: http://codereview.chromium.org/6647012

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@7095 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Instead of allocating fresh temporary lists for every instruction, reuse
the same instance and reset it between instructions.

This reduces the amount of zone memory used for inserting the HChange
instructions roughly by half.

Review URL: http://codereview.chromium.org/6628079

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@7094 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Disassemble is not available in release build
Review URL: http://codereview.chromium.org/6635043

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@7093 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/6635042

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@7092 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Used incorrect register for referencing RegExp data, so it always failed
to match the fast case.
When modifiying the object layout, it was possible to make it crash instead.

BUG=v8:1236
TEST=test/mjsunit/regress/regress-1236.js

Review URL: http://codereview.chromium.org/6635041

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@7091 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Ensure that there is always enough bytes between consequtive calls in
unoptimized code to write a call instruction at the return points
without overlapping.

This handles the case where two return points were only four bytes
apart (because the latter call was to a register).

BUG=v8:1234

Review URL: http://codereview.chromium.org/6624091

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@7089 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Now mark SetElement as must use result

The debugger runs inside its own context so there should be no setters hit. Which is the reason for the live-edit code asserting non-empty handles.
Review URL: http://codereview.chromium.org/6621042

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@7088 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/6621068

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@7087 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/6613015

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@7086 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This change splits the existing phi elimination into two phases:
1. Remove redundant phis
2. Remove dead phis with a fixed point iteration.

The new approach allows us to remove dead phis that are connected
in a cycle.

Review URL: http://codereview.chromium.org/6624061

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@7085 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Move strict mode flag from TemporaryScope to Scope so that it can be accessed from variable binding code.
Arguments do not alias in strict mode (ia32, x64 and arm, codegen and full codegen).
Hydrogen tolerates null arguments_shadow().
In codegen-<arch> arguments object is allocated eagerly to capture values before they get modified.

Review URL: http://codereview.chromium.org/6625048/

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@7083 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

When deoptimizing after a conditional expression in an effect context, we
should not see the value of the conditional expression.

BUG=v8:1237

Review URL: http://codereview.chromium.org/6625057

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@7082 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This avoids problems when getters/setters are defined on Object.

BUG=v8:1232


Review URL: http://codereview.chromium.org/6625054

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@7081 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Function inlining no longer uses subgraphs.  We detect inlining in an
effect context and avoid materializing a return value earlier than we
did before.

Review URL: http://codereview.chromium.org/6635012

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@7080 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/6623053

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@7076 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

TBR=whesse

Review URL: http://codereview.chromium.org/6627049

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@7075 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Change the way we construct the graph for polymorphic loads to match that of
polymorphic stores.

Introduce a stack-allocated helper for saving and restoring all the
function-specific graph builder state that needs to change when we begin
translating an inlined function.  Make this class authoritative by moving
redundant state out of the builder and deferring to the current function's
state.

Ensure that we always print a tracing message when abandoning an inlining
attempt.

Review URL: http://codereview.chromium.org/6628012

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@7074 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/6627048

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@7073 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Fixes issue 1234.

BUG=v8:1234

Review URL: http://codereview.chromium.org/6624053

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@7072 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/6627046

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@7071 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/6626013

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@7070 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Move the value of the root-array register to offset 128 from the start of
the root array. This allows indices 16..31 to be reached using only an
8-bit displacement, saving three bytes per access.

Review URL: http://codereview.chromium.org/6594115

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@7069 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=
TEST=test/mjsunit/strict-mode.js

Review URL: http://codereview.chromium.org/6623002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@7064 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Icu setText method keeps pointer to text, it doesn't copy it so we have to keep text around for the lifetime of the break iterator object,
or next setText operation.

Review URL: http://codereview.chromium.org/6609038

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@7063 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/6626011

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@7062 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/6623013

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@7061 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/6611020

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@7060 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/6625013

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@7059 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

They do not use subgraphs or subgraph scopes.  Instead of computing a list
of single-block subgraphs and then adding all the edges afterward, build
both the blocks and edges directly.

Review URL: http://codereview.chromium.org/6615014

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@7058 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/6623010

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@7057 ce2b1a6d-e550-0410-aec6-3dcde31c8c00