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Reland 'Additional HandleScopes to limit Handle consumption.'
v8 builds with --no-snap were hitting handle limits compiling natives for handle count unit tests that run with --check_handle_count. Patch now has higher handle limits (~4k more than required for failing natives compilation). Original issue: https://codereview.chromium.org/1185633002/ Original issue's description: > Additional HandleScopes to limit Handle consumption. > > erikcorry@chromium.org suggested digging into v8 handle usage. Found potential scopes in ast.cc and runtime-literals.cc and added tests. > > The runtime-literals.cc change reduces peak handles in imaging-darkroom.js from 1,282,610 to 428,218. The ast.cc change reduces the peak handles in string-t agcloud.js from 80,738 to 8,176. > > No significant handle count issues found with major websites, but substantial savings on some benchmarks and demos: > > Kraken's imaging-darkroom.js down from 1,282,610 to 428,218 due to runtime-literals.cc scope. > SunSpider's string-tagcloud.js down from 80,738 to 8.176 due to ast.cc > > http://www.flohofwoe.net/demos/dragons_asmjs.html (738,906 -> 478,296) > http://www.flohofwoe.net/demos/instancing_asmjs.html (737,884 -> 477,274) > https://dl.dropboxusercontent.com/u/16662598/Ports/DOSBox-web/doom.html?engine=dosbox-growth.js (1,724,114 -> 1,087,408) > https://kripken.github.io/ammo.js/examples/new/ammo.html (175,784 -> 142,058) > > BUG= > > Committed: https://crrev.com/3a4c7538839186aa38910c66c986abb563f4ccd2 > Cr-Commit-Position: refs/heads/master@{#29155} BUG= Review URL: https://codereview.chromium.org/1192743005 Cr-Commit-Position: refs/heads/master@{#29322}
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Original file line number | Diff line number | Diff line change |
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// Copyright 2015 the V8 project authors. All rights reserved. | ||
// Use of this source code is governed by a BSD-style license that can be | ||
// found in the LICENSE file. | ||
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// Flags: --check_handle_count | ||
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var ones = eval("[" + Array(12 * 1024).join("1,") + 1 + "]") | ||
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var sum = 0; | ||
for (var i = 0; i < ones.length; i++) { | ||
sum += ones[i]; | ||
} |
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