commit | ec21639857c66cbc288ddcc8d39a91b27b7124a8 | [log] [tgz] |
---|---|---|
author | Michael Achenbach <machenbach@chromium.org> | Thu Sep 20 06:31:20 2018 |
committer | Commit Bot <commit-bot@chromium.org> | Thu Sep 20 06:31:33 2018 |
tree | dc3ac211949b7244eb36ce9c3a5318e4ef98c6b9 | |
parent | 55feb110ff829664b03e031a2d430e08d5b72c7c [diff] |
Revert "[es2015] Introduce JSDataView::external_pointer." This reverts commit 46573e51d859fcc72489abc314caa197cace2594. Reason for revert: Speculative revert for breaking chromium integration. Might break gpu tests and linux debug: https://ci.chromium.org/p/v8/builders/luci.v8.ci/Mac%20V8%20FYI%20Release%20(Intel)/2554 Also blocks the roll: https://chromium-review.googlesource.com/c/chromium/src/+/1234328 Original change's description: > [es2015] Introduce JSDataView::external_pointer. > > This adds a new external_pointer field to every JSDataView instance > which points directly into the backing store at the given view's > byte_offset. This was the DataView performance is now almost on > par with the TypedArray performance for accessing aligned memory > (with appropriate endianess). This also serves as prepatory work > to enable full 64-bit addressing of DataView backing stores in > optimized code (soonish). > > This change optimizes the bounds checking sequence in TurboFan in > such a way that it further improves the DataView set/get performance > by around 10%, almost closing the remaining gap between DataViews > and TypedArrays. > > Drive-by-fix: Get rid of the code duplication around DataView inlining > in the JSCallReducer and have only a single bottleneck method now. > > Bug: chromium:225811, v8:4153, v8:7881, v8:8171 > Change-Id: I9118efd4d19e93f0e51c931a9bec1a56a0f4593e > Reviewed-on: https://chromium-review.googlesource.com/1231994 > Commit-Queue: Benedikt Meurer <bmeurer@chromium.org> > Reviewed-by: Benedikt Meurer <bmeurer@chromium.org> > Reviewed-by: Tobias Tebbi <tebbi@chromium.org> > Reviewed-by: Yang Guo <yangguo@chromium.org> > Reviewed-by: Michael Lippautz <mlippautz@chromium.org> > Cr-Commit-Position: refs/heads/master@{#56042} TBR=yangguo@chromium.org,mlippautz@chromium.org,tebbi@chromium.org,bmeurer@chromium.org Change-Id: I614a90043b1574b19936c37987db94806cac3bd7 No-Presubmit: true No-Tree-Checks: true No-Try: true Bug: chromium:225811, v8:4153, v8:7881, v8:8171 Reviewed-on: https://chromium-review.googlesource.com/1234417 Reviewed-by: Michael Achenbach <machenbach@chromium.org> Commit-Queue: Michael Achenbach <machenbach@chromium.org> Cr-Commit-Position: refs/heads/master@{#56059}
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
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/*
Please follow the instructions mentioned on the V8 wiki.