Fix CurrentMapForDeprecated() to return MaybeHandle instead of a null handle.

Also fix TryMigrateInstance() to return bool instead of the parameter or
a null handle.

R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/251683003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@20996 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Fix and improve Map::CurrentMapForDeprecatedInternal().

Inline relevant bits from Map::FindUpdatedMap() and Map::IsMoreGeneralThan()
into Map::CurrentMapForDeprecatedInternal() to fix issues introduced
with field type tracking, avoid the useless second pass over the transition
tree, and finally make it easier to understand what this method actually
does.

TEST=mjsunit/regress/regress-365172-2
R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/257893004

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@20997 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Introduce DisallowDeoptimization scope.

R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/254763007

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@20998 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Simplified CPU/CpuFeatures a bit.

This is a necessary intermediate step to disentangle the startup.

In the long run CPU and CpuFeatures should probably be merged,
and Serializer::enabled usage should be radically reduced, but
we're not there yet.

BUG=359977
LOG=y
R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/258993002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21001 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Convert function.name to API-style accessor and make CallApiGetterStub serializable.

BUG=
R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/254783003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21002 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Expose promise value through promise mirror.

R=rossberg@chromium.org, yurys@chromium.org
BUG=v8:3093
LOG=Y

Review URL: https://codereview.chromium.org/258823012

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21003 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Use InitialPropertiesLength to reinitialize rather than local calculation.

R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/256973003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21004 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Merge v8converions with conversions

BUG=none
R=mstarzinger@chromium.org
LOG=n

Review URL: https://codereview.chromium.org/250793009

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21005 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Fix and cleanup Map::GeneralizeRepresentation().

TEST=mjsunit/regress/regress-365172-[1-3],mjsunit/field-type-tracking
R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/259993004

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21006 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Revert r20974: Unify and simplify the FastCloneShallowArrayStub

Due to Layout test redness.

TBR=mvstanton@chromium.org

Review URL: https://codereview.chromium.org/256873007

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21007 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
ARM: don't use r9 anymore for gap resolution

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

Review URL: https://codereview.chromium.org/255883002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21008 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Revert "Fix and cleanup Map::GeneralizeRepresentation()."

This reverts commit r21006 for performance regressions.

TBR=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/259003002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21009 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Fix and improve Map::CurrentMapForDeprecatedInternal().

Inline relevant bits from Map::FindUpdatedMap() and Map::IsMoreGeneralThan()
into Map::CurrentMapForDeprecatedInternal() to fix issues introduced
with field type tracking, avoid the useless second pass over the transition
tree, and finally make it easier to understand what this method actually
does.

TEST=mjsunit/regress/regress-365172-2
R=svenpanne@chromium.org

Committed: https://code.google.com/p/v8/source/detail?r=20997

Review URL: https://codereview.chromium.org/257893004

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21010 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Ignore debug stepin in optimized code for array builtins.

R=dslomov@chromium.org

Review URL: https://codereview.chromium.org/251933004

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21013 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Convert function.arguments to API-style accessor.

BUG=
R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/256693007

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21014 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Fix assertion when collecting stack trace from debug break.

R=mstarzinger@chromium.org
BUG=v8:3296
LOG=N

Review URL: https://codereview.chromium.org/256113003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21015 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Error stack getter should not overwrite itself with a data property.

R=ulan@chromium.org
BUG=v8:3294
LOG=Y

Review URL: https://codereview.chromium.org/258933007

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21016 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Merge remote-tracking branch 'upstream/master'