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zhengxing.li 240571d768 X87: [turbofan] Add general support for sp-based frame access.
port 5166987369 (r32234)

  original commit message:
  Some highlights of this CL:
  * Refactor the mutable state out of Frame into FrameAccessState,
    which is maintained and updated during code generation to
    record whether sp- or fp-based frame access is currently active
    and how deep the stack on top of the frame is.
  * The operand resultion in linkage.cc now uses FrameAccessState
    to determine how to generate frame-accessing operands.
  * Update all platforms to accurately track additionally pushed
    stack slots (e.g. arguments for calls) in the FrameAccessState.
  * Add a flag, --turbo_sp_frame_access, which forces all frame
    access to be sp-based whenever possible. This will likely never
    be used in production, but for testing it's useful in verifying
    that the stack-tracking of each platform maintained in the
    FrameAccessState is correct.
  * Use sp-based frame access for gap resolving before tail
    calls. This will allow for slightly more efficient restoration
    of the frame pointer in the tail call in a later CL.
  * Remove most ad hoc groping into CallDescriptors to
    determine if a frame is needed, instead consistently use
    predicates like needs_frame(), IsCFunctionCall() and
    IsJSFunctionCall().

BUG=

Review URL: https://codereview.chromium.org/1479483002

Cr-Commit-Position: refs/heads/master@{#32253}
2015-11-25 08:43:24 +00:00
benchmarks Revert "Refactoring: Make gtest testsuite the default." 2014-09-02 09:17:26 +00:00
build Work-around for passing CC/CXX for arm cross-compilation with make. 2015-11-24 14:34:08 +00:00
docs [Docs] Removed unused docs because they are moved to GitHub 2015-11-19 10:23:30 +00:00
include Removed support deprecated (//@|/*@) source(URL|MappingURL)= 2015-11-25 08:02:27 +00:00
infra Use committer list from chrome-infra-auth group project-v8-committers 2015-08-27 16:10:22 +00:00
samples Fix crash in shell.cc when reporting exceptions that aren't Errors 2015-10-20 14:33:52 +00:00
src X87: [turbofan] Add general support for sp-based frame access. 2015-11-25 08:43:24 +00:00
test [test] Skip flaky test. 2015-11-25 08:18:10 +00:00
testing Converted V8 CQ config to proto-format 2015-05-28 15:02:53 +00:00
third_party/binutils Update binutils version. 2015-08-07 08:09:49 +00:00
tools Reland of Disable non-standard Promise functions in staging (patchset #1 id:1 of https://codereview.chromium.org/1473603002/ ) 2015-11-24 23:18:30 +00:00
.clang-format Change clang-format config to allow for two empty lines between functions 2013-12-03 10:39:21 +00:00
.gitignore Use msvs toolchain from depot_tools. 2015-11-02 10:40:28 +00:00
.ycm_extra_conf.py [ycm] The YouCompleteMe configuration is not VIM specific. 2015-02-12 07:21:13 +00:00
AUTHORS [tools] Make gen-postmortem-metadata.py more reliable 2015-11-12 14:48:04 +00:00
BUILD.gn Reland of Disable non-standard Promise functions in staging (patchset #1 id:1 of https://codereview.chromium.org/1473603002/ ) 2015-11-24 23:18:30 +00:00
ChangeLog Update change log to match roll branch. 2015-05-18 15:03:50 +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 Update V8 DEPS. 2015-11-25 04:22:48 +00:00
LICENSE Updates to the license information of third party components. 2015-06-16 12:37:50 +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 MIPS64: Add big-endian support for mips64. 2015-09-29 17:23:55 +00:00
Makefile.android Reland [android] Migrate more configs to gyp. 2015-06-26 12:04:09 +00:00
Makefile.nacl Use the pnacl-clang toolchain for (P)NaCL builds 2014-10-06 08:10:50 +00:00
OWNERS Update OWNERS file. 2015-07-16 11:37:51 +00:00
PRESUBMIT.py Remove unused function in presubmit script 2015-09-23 10:52:45 +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 Split the GN 'snapshot_toolchain' logic out into an include file. 2015-09-22 02:28:40 +00:00
WATCHLISTS Add an interpreter watchlist 2015-10-23 15:43:37 +00:00

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.