[turbofan] add register assignment verifier

R=jarin@chromium.org

BUG=

Review URL: https://codereview.chromium.org/713803002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25242 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
MIPS: Resolve chromium and android webview build conflicts.

The mips related gyp variables and compiler flags for webview
and chromium builds are set externally. The CL ensures this
behaviour and prevents conflicts in configuration with standalone builds.

TEST=
BUG=
R=jkummerow@chromium.org, paul.lind@imgtec.com

Review URL: https://codereview.chromium.org/707883002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25243 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Fix change log creation in push script.

BUG=chromium:408523
LOG=n
TBR=tandrii@chromium.org
TEST=script_test.py

Review URL: https://codereview.chromium.org/710593003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25244 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Reland "[turbofan] Fix select lowering" with fix.

Select lowering must not merge Select nodes that depend on each other,
because the resulting graph is not schedulable.

TEST=unittests
R=jarin@chromium.org

Review URL: https://codereview.chromium.org/709423003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25245 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Fix serialization of expected outcomes in test driver.

The outcomes are saved as a set and need to be converted into
a list to be json-serializable.

TBR=tandrii@chromium.org

Review URL: https://codereview.chromium.org/710073002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25246 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Fix bugs in simplified lowering relating to int32/uint32 signs.

Lowering of NumberToUint32 and NumberToInt32 was not correctly accounting for the sign of the input and the sign of the output, emitting the wrong representation changes.

Along the way, I've found cases where MachineOperatorBuilder would break if fed a machine type for loads or stores that was not cached, requiring MachineOperatorBuilder to take zone to allocate operators for these cases.

R=bmeurer@chromium.org, jarin@chromium.org
BUG=

Review URL: https://codereview.chromium.org/714613002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25247 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Fix has_constant_parameter_count() confusion in LReturn

BUG=chromium:431602
LOG=y
R=jarin@chromium.org

Review URL: https://codereview.chromium.org/714663002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25249 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
In-object double fields unboxing (for 64-bit only).

This CL introduces LayoutDescriptor which is responsible for tracking which in-object fields are tagged and which are not.
LayoutDescriptor field added to Map. Currently unboxing is disabled.

R=hpayer@chromium.org, verwaest@chromium.org

Review URL: https://codereview.chromium.org/391693002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25250 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Fixes for Windows and Mac builds after r25250.

R=verwaest@chromium.org
TBR=verwaest@chromium.org

Review URL: https://codereview.chromium.org/717573002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25251 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Revert "In-object double fields unboxing (for 64-bit only)."
Revert "Fixes for Windows and Mac builds after r25250."
TBR=ishell@chromium.org

Review URL: https://codereview.chromium.org/699613004

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25252 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
MapCache simplification. It is now a FixedArray that maps number of properties to a WeakCell with a Map.

R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/712943002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25253 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Fix test driver json output.

TBR=tandrii@chromium.org

Review URL: https://codereview.chromium.org/716713002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25254 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
PowerPC specific sub-directories.

Technically, this is https://codereview.chromium.org/571173003/ from Andrew Low <andrew_low@ca.ibm.com>.

TBR=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/714093002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25255 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Add optional max elements limit for Map/Set mirror iterator preview.

R=yangguo@chromium.org
LOG=N

Review URL: https://codereview.chromium.org/712083002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25257 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Reland "In-object double fields unboxing (for 64-bit only)."

R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/711313002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25258 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
harmony-scoping: Implement LoadIC handler for loads from global contexts.

R=ishell@chromium.org, adamk@chromium.org, rossberg@chromium.org, verwaest@chromium.org
BUG=v8:2198
LOG=N

Review URL: https://codereview.chromium.org/696783005

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25259 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Removed gcc_version magic from our GYP files, we don't support GCC 4.4 anymore.

R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/710233004

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25260 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Removed CSCOPE artifact.

TBR=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/711363002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25261 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Remove PhiReducer.

R=mstarzinger@chromium.org
BUG=

Review URL: https://codereview.chromium.org/684993006

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25262 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Remove V8.ZoneSegmentBytes.

1) It's unused. 2) Since Zones can be used on a background thread, the Zone
cannot just access this counter from the Isolate, so keeping this counter up to
date would require extra work. Better to just remove it.

BUG=431860
LOG=n
R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/716793002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25263 ce2b1a6d-e550-0410-aec6-3dcde31c8c00