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rossberg@chromium.org 090d09d685 ES6 symbols: Implement Symbol intrinsic and basic functionality 
- Add --harmony-symbols flag.
- Add Symbol constructor; allow symbols as (unreplaced) return value from constructors.
- Introduce %CreateSymbol and %_IsSymbol natives and respective instructions.
- Extend 'typeof' code generation to handle symbols.
- Extend CompareIC with a UNIQUE_NAMES state that (uniformly) handles internalized strings and symbols.
- Property lookup delegates to SymbolDelegate object for symbols, which only carries the toString method.
- Extend Object.prototype.toString to recognise symbols.

Per the current draft spec, symbols are actually pseudo objects that are frozen with a null prototype and only one property (toString). For simplicity, we do not treat them as proper objects for now, although typeof will return "object". Only property access works as if they were (frozen) objects (via the internal delegate object).

(Baseline CL: https://codereview.chromium.org/12223071/)

R=mstarzinger@chromium.org
BUG=v8:2158

Review URL: https://codereview.chromium.org/12296026

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13786 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2013-03-01 13:28:55 +00:00
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gcmole In gcmole assume that methods exiting VM can cause GC. 2012-02-17 11:34:50 +00:00
gyp ES6 symbols: Implement Symbol intrinsic and basic functionality 2013-03-01 13:28:55 +00:00
oom_dump Update oom_dump README to indicate that people should build the correct V8 version. 2011-07-26 06:03:36 +00:00
testrunner Fix test harness to correctly split extra flags. 2013-01-29 13:27:23 +00:00
v8.xcodeproj Add support for building Xcode project files from GYP files 2011-06-09 09:07:17 +00:00
visual_studio Remove the Visual Studio project files 2011-05-02 13:43:13 +00:00
android-build.sh Rewrite Makefile rules for Android to allow parallel execution 2012-07-27 11:14:44 +00:00
android-ll-prof.sh Change default ARCH version in android low-level profiler script to 4.6 2012-10-08 11:11:30 +00:00
android-run.py Android test runner: Rename "Error" to "ANDROID" 2012-07-19 10:44:15 +00:00
android-sync.sh Android test runner: Make android-sync.sh work on Mac 2012-07-23 16:57:22 +00:00
bash-completion.sh Bash completion for d8: fix directory name completion 2012-02-08 17:20:35 +00:00
check-static-initializers.sh Prepare for using GYP build on buildbots 2012-05-11 12:18:09 +00:00
codemap.js Eliminate the need for code delete events in CPU profiler. 2011-09-14 11:47:03 +00:00
common-includes.sh push-to-trunk.sh/merge-to-branch.sh: use "git apply" instead of "patch" to apply patches 2012-10-05 08:58:02 +00:00
consarray.js TickProcessor script reimplemented in JavaScript. 2009-04-27 13:50:42 +00:00
csvparser.js Shorten constructor names in JS tickprocessor. 2011-02-10 07:47:28 +00:00
disasm.py Add ARM support to tools/grokdump.py 2013-01-07 09:48:04 +00:00
freebsd-tick-processor * Fix build errors on FreeBSD 8.2 2011-03-16 11:15:43 +00:00
fuzz-harness.sh Fix harness for fuzzer to run for 100 iterations only. 2012-05-23 07:55:38 +00:00
gc-nvp-trace-processor.py Align tools/gc-nvp-trace-processor.py with --trace-gc-nvp output. 2011-12-15 09:41:28 +00:00
gdb-v8-support.py Added check for trailing whitespaces and corrected existing violations. 2011-09-01 11:28:10 +00:00
gen-postmortem-metadata.py Synched postmortem script with not-so-recent changes. 2013-01-03 13:11:47 +00:00
generate-ten-powers.scm Fast double-to-ascii conversion. 2010-03-11 14:49:35 +00:00
grokdump.py Update grokdump to reflect current heap layout. 2013-02-19 09:01:25 +00:00
js2c.py Fixing python deprecations. 2012-05-21 10:19:28 +00:00
jsmin.py Fixing python deprecations. 2012-05-21 10:19:28 +00:00
linux-tick-processor Fix path to d8 and properly quote strings so it works with dash(1) 2012-07-26 10:03:30 +00:00
ll_prof.py llprof improvements 2012-12-07 12:51:33 +00:00
logreader.js Fixing presubmit. 2011-09-15 13:20:42 +00:00
mac-nm Fix mac-nm script to support filenames w/spaces 2009-08-13 14:03:12 +00:00
mac-tick-processor Implement shared libraries logging on Mac OS X, added required support in Tick Processor. 2009-07-14 05:01:06 +00:00
merge-to-branch.sh push-to-trunk.sh/merge-to-branch.sh: use "git apply" instead of "patch" to apply patches 2012-10-05 08:58:02 +00:00
plot-timer-events Add option to limit tick processor to a time range. 2013-01-29 14:41:02 +00:00
plot-timer-events.js Add option to limit tick processor to a time range. 2013-01-29 14:41:02 +00:00
presubmit.py First commit of new tools/run-tests.py 2012-09-24 09:38:46 +00:00
process-heap-prof.py Added check for trailing whitespaces and corrected existing violations. 2011-09-01 11:28:10 +00:00
profile_view.js Shorten constructor names in JS tickprocessor. 2011-02-10 07:47:28 +00:00
profile.js Revert accidental r9229 and r9230 2011-09-12 10:50:40 +00:00
push-to-trunk.sh push-to-trunk.sh/merge-to-branch.sh: use "git apply" instead of "patch" to apply patches 2012-10-05 08:58:02 +00:00
run-llprof.sh llprof improvements 2012-12-07 12:51:33 +00:00
run-tests.py Constant fold math and string operations. 2013-02-21 11:40:37 +00:00
run-valgrind.py Unify the shebang line of python scripts 2013-01-29 10:40:43 +00:00
splaytree.js Remove support for logging into a memory buffer. 2011-07-13 11:31:22 +00:00
stats-viewer.py tools/stats-viewer: Update chromium stats table layout. 2011-05-25 16:47:54 +00:00
status-file-converter.py First commit of new tools/run-tests.py 2012-09-24 09:38:46 +00:00
test-server.py Test runner: More fixes. 2012-10-02 08:50:02 +00:00
test-wrapper-gypbuild.py Build V8 for Android IA 2012-07-18 11:43:44 +00:00
test.py Constant fold math and string operations. 2013-02-21 11:40:37 +00:00
tick-processor.html Add HTML-based tick processor 2012-12-12 15:06:50 +00:00
tickprocessor-driver.js Add option to limit tick processor to a time range. 2013-01-29 14:41:02 +00:00
tickprocessor.js Add option to limit tick processor to a time range. 2013-01-29 14:41:02 +00:00
utils.py Adding NetBSD support for scons build. 2011-11-16 14:35:47 +00:00
windows-tick-processor.bat Make windows-tick-processor respect D8_PATH. 2010-10-25 15:04:08 +00:00