The Tor Browser: js/src/jit/EdgeCaseAnalysis.cpp@129ffea94266

Conditionally enable double key logic according to:
private browsing mode or privacy.thirdparty.isolate preference and
implement in GetCookieStringCommon and FindCookie where it counts...
With some reservations of how to convince FindCookie users to test
condition and pass a nullptr when disabling double key logic.

     1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-

     2  * vim: set ts=8 sts=4 et sw=4 tw=99:

     3  * This Source Code Form is subject to the terms of the Mozilla Public

     4  * License, v. 2.0. If a copy of the MPL was not distributed with this

     5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     7 #include "jit/EdgeCaseAnalysis.h"

     9 #include "jit/MIR.h"

    10 #include "jit/MIRGraph.h"

    12 using namespace js;

    13 using namespace js::jit;

    15 EdgeCaseAnalysis::EdgeCaseAnalysis(MIRGenerator *mir, MIRGraph &graph)

    16   : mir(mir), graph(graph)

    17 {

    18 }

    20 bool

    21 EdgeCaseAnalysis::analyzeLate()

    22 {

    23     // Renumber definitions for NeedNegativeZeroCheck under analyzeEdgeCasesBackward.

    24     uint32_t nextId = 1;

    26     for (ReversePostorderIterator block(graph.rpoBegin()); block != graph.rpoEnd(); block++) {

    27         if (mir->shouldCancel("Analyze Late (first loop)"))

    28             return false;

    29         for (MDefinitionIterator iter(*block); iter; iter++) {

    30             iter->setId(nextId++);

    31             iter->analyzeEdgeCasesForward();

    32         }

    33         block->lastIns()->setId(nextId++);

    34     }

    36     for (PostorderIterator block(graph.poBegin()); block != graph.poEnd(); block++) {

    37         if (mir->shouldCancel("Analyze Late (second loop)"))

    38             return false;

    39         for (MInstructionReverseIterator riter(block->rbegin()); riter != block->rend(); riter++)

    40             riter->analyzeEdgeCasesBackward();

    41     }

    43     return true;

    44 }

The Tor Browser / file revision

js/src/jit/EdgeCaseAnalysis.cpp@129ffea94266

js/src/jit/EdgeCaseAnalysis.cpp