The underlying problem is that for compound/count operations we use the *load*
type feedback for storing, too. For normal properties this doesn't matter, but
for accessor properties we should better use the *store* type feedback, which
would be available, too. This consistent feedback usage could be guaranteed if
we removed the heavy copy-n-paste in the crankshaft code generation for
compound/count operations and assignments/property loads.

To be on the safe side, we postpone this refactoring and do a quick and easily
mergeable fix.

BUG=140083
TEST=mjsunit/regress/regress-crbug-140083.js

Review URL: https://chromiumcodereview.appspot.com/10828146

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12252 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=ulan@chromium.org

Review URL: https://chromiumcodereview.appspot.com/10843052

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12251 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This is a forward-compatible change to avoid type/naming
conflicts when the Android platform/NDK will update its
<signal.h> header to properly define 'struct sigcontext',
'mcontext_t' and 'ucontext_t'.

In particular:

  - Do not define 'struct sigcontext.h' to avoid
    conflicts with the C library definition (which
    is different, see below).

  - Only provide custom ucontext_t declarations if
    the Android <signal.h> doesn't provide it. This can
    be tested with a macro check (__BIONIC_HAVE_UCONTEXT_T)

+ Use 'gettid()' on Android since it is available (at all
  API levels).

See http://code.google.com/p/android/issues/detail?id=34784

Review URL: https://chromiumcodereview.appspot.com/10829122
Patch from David Turner <digit@chromium.org>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12250 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=yangguo@chromium.org

Review URL: https://chromiumcodereview.appspot.com/10836049

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12249 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

When specifying a new create histogram callback, reset all histograms so they recreate themselves on next use.

We only do this for histograms, and not for counters, as counters might be used directly from generated code

BUG=none
TEST=none

Review URL: https://chromiumcodereview.appspot.com/10828113
Patch from Jochen Eisinger <jochen@chromium.org>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12248 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

case objects).  We should be testing the holder for dictionary
mode, not the receiver.
Review URL: https://chromiumcodereview.appspot.com/10827113

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12247 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=ulan@chromium.org

Review URL: https://chromiumcodereview.appspot.com/10826079

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12246 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This extends the existing clearing of type feedback cells during GC to
incremental marking in order to prevent cross-context retention that
would last until the next non-incremental GC.

R=erik.corry@gmail.com
TEST=cctest/test-heap/IncrementalMarkingClearsTypeFeedbackCells

Review URL: https://chromiumcodereview.appspot.com/10823082

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12245 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=yangguo@chromium.org

Review URL: https://chromiumcodereview.appspot.com/10824125

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12242 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: https://chromiumcodereview.appspot.com/10828112

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12241 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=erik.corry@gmail.com
TEST=cctest/test-serialize (--gc-interval=100)

Review URL: https://chromiumcodereview.appspot.com/10829097

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12240 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

mksnapshot or a VM that is booted from a snapshot.  --debug-code
can still have an effect on stub and optimized code and it still
works on the full code generator when running without snapshots.

The deoptimizer generates full-code-generator code and relies on it having
the same layout as last time.  This means that the code the full code
generator makes for the snapshot should be the same as the code it makes
later.  This change makes the full code generator create more consistent
code between mksnapshot time and run time.

This is a bug fix and a step towards making the snapshot code more robust.
Review URL: https://chromiumcodereview.appspot.com/10834085

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12239 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=mstarzinger@chromium.org

Review URL: https://chromiumcodereview.appspot.com/10824107

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12238 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: https://chromiumcodereview.appspot.com/10830093

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12237 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: https://chromiumcodereview.appspot.com/10825099

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12236 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=jkummerow@chromium.org

Review URL: https://chromiumcodereview.appspot.com/10830088

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12235 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=mmassi@chromium.org

Review URL: https://chromiumcodereview.appspot.com/10837019

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12234 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

The deoptimizer generates full-code-generator code and relies on it having
the same layout as last time.  This means that the code the full code
generator makes for the snapshot should be the same as the code it makes
later.  This change makes the full code generator create more consistent
code between mksnapshot time and run time.

This is a bug fix and a step towards making the snapshot code more robust.
Review URL: https://chromiumcodereview.appspot.com/10824084

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12233 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=jkummerow@chromium.org

Review URL: https://chromiumcodereview.appspot.com/10831049

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12232 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=verwaest@chromium.org
BUG=
TEST=

Review URL: https://chromiumcodereview.appspot.com/10827084

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12231 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=v8:2211
TEST=test-heap/Regress2211

Review URL: https://chromiumcodereview.appspot.com/10827040

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12230 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=erik.corry@gmail.com
TEST=cctest/test-api,cctest/test-heap (--gc-interval=100)

Review URL: https://chromiumcodereview.appspot.com/10824082

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12229 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

x64 BinaryOpStub::GenerateSmiCode use wrong registers in one code path.

e.g. d8 --trace_ic
var dd = new Float64Array(2);
dd[1] = 1;
(function fn() {
  for (var i = 0; i < 1000; i++)
  dd[0] = 2 / dd[1];
})();
It keeps falling into runtime call and patching.

No regression test, because I don't how to test it.

Review URL: https://chromiumcodereview.appspot.com/10834064
Patch from Zheng Liu <shdwthr@gmail.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12226 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=jkummerow@chromium.org

Review URL: https://chromiumcodereview.appspot.com/10825076

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12225 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This adds the --verify-global-context-separation flag which can be used
to verify that no code object embeds pointers to more than one global
context after a full GC. It uses an object visitor that just performs
shallow traversal of the object graph spanned by one code object, and
breaks at points where application objects are encountered. So it will
not trip on cross-context leaks introduced by the application itself.

R=verwaest@chromium.org

Review URL: https://chromiumcodereview.appspot.com/10830049

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12224 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Currently only simple getter calls are handled (i.e. no calls in count
operations or compound assignments), and deoptimization in the getter is not
handled at all. Because of the latter, we temporarily hide this feature behind a
new flag --inline-accessors, which is false by default.

Review URL: https://chromiumcodereview.appspot.com/10828066

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12223 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=verwaest@chromium.org

Review URL: https://chromiumcodereview.appspot.com/10823054

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12222 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=svenpanne@chromium.org
BUG=
TEST=

Review URL: https://chromiumcodereview.appspot.com/10825074

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12221 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=jkummerow@chromium.org
BUG=
TEST=

Review URL: https://chromiumcodereview.appspot.com/10829075

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12220 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=svenpanne@chromium.org
BUG=v8:2239
TEST=

Review URL: https://chromiumcodereview.appspot.com/10821088

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12219 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: https://chromiumcodereview.appspot.com/10833002
Patch from Haitao Feng <haitao.feng@intel.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12218 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=mstarzinger@chromium.org
BUG=
TEST=

Review URL: https://chromiumcodereview.appspot.com/10832061

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12217 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=svenpanne@chromium.org
BUG=v8:2260
TEST=test-utils/Utils1

Review URL: https://chromiumcodereview.appspot.com/10820047

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12216 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: https://chromiumcodereview.appspot.com/10802048

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12215 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=yangguo@chromium.org
TEST=mjsunit/harmony/proxies (--gc-interval=100)

Review URL: https://chromiumcodereview.appspot.com/10827072

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12214 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This is a refactoring-only CL and the fourth one in a series for enabling
inlining of accessors. Later when we try to inline accessor calls, their
arguments must still be on the expression stack, so we must not remove them too
early.

Review URL: https://chromiumcodereview.appspot.com/10828049

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12213 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=jkummerow@chromium.org

Review URL: https://chromiumcodereview.appspot.com/10833049

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12212 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=v8:2257

Review URL: https://chromiumcodereview.appspot.com/10824039
Patch from Haitao Feng <haitao.feng@intel.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12211 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=mstarzinger@chromium.org
BUG=
TEST=

Review URL: https://chromiumcodereview.appspot.com/10828048

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12210 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This is a refactoring-only CL and the third one in a series for enabling
inlining of accessors. The goal of this CL is to move the builders for accessors
to the places where we might be able to inline them later, i.e. the VisitFoo and
HandleBar member functions of HGraphBuilder.

Extracted duplicate code into LookupAccessorPair.

Review URL: https://chromiumcodereview.appspot.com/10831047

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12209 ce2b1a6d-e550-0410-aec6-3dcde31c8c00