V8 can clear exception pending message, when should not do this.

The case:
v8::TryCatch try_catch;
CompileRun(try { CEvaluate('throw 1;'); } finally {});
CHECK(try_catch.HasCaught());
CHECK(!try_catch.Message().IsEmpty());

CEvaluate is native call. Last check is not passed without patch. Patch contains test TryCatchFinallyStoresMessageUsingTryCatchHandler with more details.

R=yangguo@chromium.org, mstarzinger@chromium.org, vsevik@chromium.org

Review URL: https://codereview.chromium.org/321763002

Patch from Alexey Kozyatinskiy <kozyatinskiy@google.com>.

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21755 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Simplify string copy in SubStringStub.

The optimizations are unnecessary since the maximum
string length they operate on is currently 12.

R=bmeurer@chromium.org
BUG=352155
LOG=N

Review URL: https://codereview.chromium.org/326943002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21756 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Fix GN build.

R=machenbach@chromium.org

Review URL: https://codereview.chromium.org/328883005

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21759 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Fix unsigned comparisons.

Instead of marking the comparison instruction itself as Uint32, we
look at its arguments. This is more consistent what HChange does.

BUG=v8:3380
TEST=mjsunit/regress/regress-3380
LOG=y
R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/325133004

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21762 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Removed dead API entries.

R=ulan@chromium.org

Review URL: https://codereview.chromium.org/322293003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21763 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Unbreak build.

TBR=ulan@chromium.org

Review URL: https://codereview.chromium.org/329053005

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21764 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Fix typos in BUILD.gn source lists

"foo,cc" is not the same as "foo.cc"

R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/326193002

Patch from James Robinson <jamesr@chromium.org>.

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21765 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Set SAHF flag correctly for ia32

sahf flag will not be set for ia32 on some old platform because some old processors does not support CPUID's extended features.
This also avoids redundant cpuid check in ia32 for sahf.

BUG=
R=danno@chromium.org

Review URL: https://codereview.chromium.org/298823008

Patch from Weiliang Lin <weiliang.lin@intel.com>.

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21766 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Implement LookupIterator designed to replace LookupResult

BUG=
R=ishell@chromium.org

Review URL: https://codereview.chromium.org/314953006

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21767 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Whitespace change to trigger bots.

BUG=
TBR=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/324373002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21768 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Fixed flooring division by a power of 2, once again...

Avoid right shifts by zero bits: On ARM it actually means shifting by
32 bits (correctness issue) and on other platforms they are useless
(performance issue). This is fix for the fix in r20544.

BUG=v8:3259
LOG=y
R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/324403003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21769 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Ignore live_edit_ flag when when dealing with LiveEdit in a debug break.

LiveEdit maybe disabled when we enter the break and again when we
leave it, but enabled in between.

TEST=https://codereview.chromium.org/329533002
R=ulan@chromium.org

Review URL: https://codereview.chromium.org/325183003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21770 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Merge remote-tracking branch 'upstream/master'