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bjaideep 2c846a2ac7 PPC/s390: [turbofan] Support variable size argument removal in TF-generated functions 
Port 5319b50c85

Original commit message:

    This is preparation for using TF to create builtins that handle variable number of
    arguments and have to remove these arguments dynamically from the stack upon
    return.

    The gist of the changes:
    - Added a second argument to the Return node which specifies the number of stack
      slots to pop upon return in addition to those specified by the Linkage of the
      compiled function.
    - Removed Tail -> Non-Tail fallback in the instruction selector. Since TF now should
      handles all tail-call cases except where the return value type differs, this fallback
      was not really useful and in fact caused unexpected behavior with variable
      sized argument popping, since it wasn't possible to materialize a Return node
      with the right pop count from the TailCall without additional context.
    - Modified existing Return generation to pass a constant zero as the additional
      pop argument since the variable pop functionality

R=danno@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com, mbrandy@us.ibm.com

BUG=
LOG=N

Review-Url: https://codereview.chromium.org/2462173002
Cr-Commit-Position: refs/heads/master@{#40682}
2016-10-31 20:00:33 +00:00
benchmarks Revert "Refactoring: Make gtest testsuite the default." 2014-09-02 09:17:26 +00:00
build_overrides [inspector] enable inspector by default 2016-10-25 07:13:48 +00:00
docs [Docs] Removed unused docs because they are moved to GitHub 2015-11-19 10:23:30 +00:00
gni [inspector] expose js_protocol.json file location in BUILD file 2016-10-12 14:11:21 +00:00
gypfiles [debugger] basic test infrastructure for new debugger test api. 2016-10-21 06:38:05 +00:00
include [Tracing] Remove unused excluded categories list. 2016-10-31 19:45:20 +00:00
infra [CQ] Temporarily reduce coverage bot's frequency 2016-10-19 12:13:40 +00:00
samples Reland of land "Turn libbase into a component" (patchset #1 id:1 of https://codereview.chromium.org/2396933002/ ) 2016-10-07 07:56:52 +00:00
src PPC/s390: [turbofan] Support variable size argument removal in TF-generated functions 2016-10-31 20:00:33 +00:00
test [Tracing] Remove unused excluded categories list. 2016-10-31 19:45:20 +00:00
testing Use GTEST_LANG_CXX11 in V8 2016-07-25 13:06:42 +00:00
third_party [inspector] use own copy of third_party/inspector_protocol 2016-10-28 18:20:47 +00:00
tools [tools] Support more map information in --trace-ic and ic-explorer.html 2016-10-27 09:56:14 +00:00
.clang-format [formatting] Remove the formatting requirement for 2 empty lines between declarations. 2016-01-25 09:50:17 +00:00
.gitignore [inspector] use own copy of third_party/inspector_protocol 2016-10-28 18:20:47 +00:00
.gn Disentangle gyp and gn files 2016-09-14 19:02:41 +00:00
.ycm_extra_conf.py Use C++11 / gnu++11, not 0x 2016-03-22 15:24:43 +00:00
AUTHORS [cleanup] #undef DECLARE_ERROR instead of non-existent DEFINE_ERROR 2016-10-27 12:36:36 +00:00
BUILD.gn [Tracing] Implement TracingCategoryObserver. 2016-10-28 20:44:04 +00:00
ChangeLog [Release] Update ChangeLog file 2016-02-17 21:29:09 +00:00
CODE_OF_CONDUCT.md Explicitly state that the Chromium Code of Conduct also applies to V8 2016-03-02 09:51:24 +00:00
codereview.settings Use v8-reviews@ for review mail, so v8-dev@ is free for dev discussions 2015-09-09 08:14:11 +00:00
DEPS [inspector] use own copy of third_party/inspector_protocol 2016-10-28 18:20:47 +00:00
LICENSE Updates to the license information of third party components. 2015-06-16 12:37:50 +00:00
LICENSE.fdlibm Add LICENSE.fdlibm for all the fdlibm imported sources. 2016-06-09 07:17:03 +00:00
LICENSE.strongtalk Add LICENSE.v8, LICENSE.strongtalk and LICENSE.valgrind to the v8 2011-02-03 07:10:06 +00:00
LICENSE.v8 Add LICENSE.v8, LICENSE.strongtalk and LICENSE.valgrind to the v8 2011-02-03 07:10:06 +00:00
LICENSE.valgrind Add LICENSE.v8, LICENSE.strongtalk and LICENSE.valgrind to the v8 2011-02-03 07:10:06 +00:00
Makefile Remove NaCl support. 2016-07-27 07:50:31 +00:00
Makefile.android [build] Fix d8-for-Android builds 2016-05-20 12:10:45 +00:00
OWNERS Remove oth from OWNERS 2016-09-05 13:38:25 +00:00
PRESUBMIT.py Fix BUILD.gn files and add presubmit step 2016-09-19 10:59:41 +00:00
README.md [Docs] Removed unused docs because they are moved to GitHub 2015-11-19 10:23:30 +00:00
snapshot_toolchain.gni Use clang for snapshot_toolchain by default, except on ChromeOS. 2016-08-23 14:04:27 +00:00
WATCHLISTS [inspector] added devtools-reviews@chromium.org in WATCHLISTS for inspector 2016-09-29 15:16:54 +00:00

README.md

V8 JavaScript Engine

V8 is Google's open source JavaScript engine.

V8 implements ECMAScript as specified in ECMA-262.

V8 is written in C++ and is used in Google Chrome, the open source browser from Google.

V8 can run standalone, or can be embedded into any C++ application.

V8 Project page: https://github.com/v8/v8/wiki

Getting the Code

Checkout depot tools, and run

    fetch v8

This will checkout V8 into the directory v8 and fetch all of its dependencies. To stay up to date, run

    git pull origin
    gclient sync

For fetching all branches, add the following into your remote configuration in .git/config:

    fetch = +refs/branch-heads/*:refs/remotes/branch-heads/*
    fetch = +refs/tags/*:refs/tags/*

Contributing

Please follow the instructions mentioned on the V8 wiki.