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[v14.x] Backport V8 8.6 LTS commits #38275

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targos wants to merge 32 commits into from
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[v14.x] Backport V8 8.6 LTS commits #38275

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201c2d9
deps: V8: cherry-pick 516b5d3f9cfe
targos Apr 17, 2021
8e9415c
deps: V8: cherry-pick a59e3ac1d7fa
targos Apr 17, 2021
a8a9562
deps: V8: cherry-pick abb4d0a431c0
targos Apr 17, 2021
7b7d5c1
deps: V8: cherry-pick 33f4064dbad3
targos Apr 17, 2021
a0cd0e6
deps: V8: cherry-pick d724820c1d5d
targos Apr 17, 2021
79cbe4c
deps: V8: cherry-pick 6a4cd97d6691
targos Apr 17, 2021
042ff7b
deps: V8: cherry-pick ed3eedae33d0
targos Apr 17, 2021
3936f4f
deps: V8: cherry-pick 8c725f7b5bbf
targos Apr 17, 2021
df2459d
deps: V8: cherry-pick 3ba21a17ce2f
targos Apr 17, 2021
7249e8c
deps: V8: cherry-pick c449afa1953b
targos Apr 17, 2021
ca4c625
deps: V8: cherry-pick 412ac52d8246
targos Apr 17, 2021
b3307a1
deps: V8: cherry-pick 482e5c7750b3
targos Apr 17, 2021
e319c63
deps: V8: cherry-pick ad2c5dae4688
targos Apr 17, 2021
39627e6
deps: V8: cherry-pick 5c6c99a8dc72
targos Apr 17, 2021
4110028
deps: V8: cherry-pick e527ba4bf8af
targos Apr 17, 2021
6506918
deps: V8: cherry-pick 53c4d057974a
targos Apr 17, 2021
92c9f62
deps: V8: cherry-pick d2283ba066ba
targos Apr 17, 2021
9803b55
deps: V8: cherry-pick 813066946968
targos Apr 17, 2021
14f68be
deps: V8: cherry-pick 5678ebe8f6c4
targos Apr 17, 2021
a461185
deps: V8: cherry-pick 254c7945eea2
targos Apr 17, 2021
022356d
deps: V8: cherry-pick 3066b7b2fcb3
targos Apr 17, 2021
03c1d2e
deps: V8: cherry-pick 1e35f6472510
targos Apr 17, 2021
e7472f1
deps: V8: cherry-pick 8ebd894186ed
targos Apr 17, 2021
c38bbfc
deps: V8: cherry-pick 1a7d55a9a427
targos Apr 17, 2021
695eb84
deps: V8: cherry-pick 93b2105fbe44
targos Apr 17, 2021
dd2fc44
deps: V8: cherry-pick f44fcbf803ac
targos Apr 17, 2021
caca453
deps: V8: cherry-pick 6771d3e31883
targos Apr 17, 2021
02584c6
deps: V8: cherry-pick eddb82330975
targos Apr 17, 2021
3dcf5d8
deps: V8: cherry-pick 4e24c353d812
targos Apr 18, 2021
374a40f
deps: V8: cherry-pick be91c6c50818
targos Apr 18, 2021
6d9800e
build: do not pass mode option to test-v8 command
targos Oct 19, 2020
72d8e9d
deps: V8: cherry-pick bbc59d124ef3
targos Apr 27, 2021
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deps: V8: cherry-pick ad2c5dae4688 
Original commit message:

    Merged: [deoptimizer] Stricter checks during deoptimization

    Revision: 506e893b812e03dbebe34b11d8aa9d4eb6869d89

    BUG=chromium:1161357
    NOTRY=true
    NOPRESUBMIT=true
    NOTREECHECKS=true
    R=​mythria@chromium.org

    (cherry picked from commit 44d052c19df0801fafdf2be54c899db65e79c67a)

    Change-Id: I97b69ae11d85bc0acd4a0c7bd28e1b692433de80
    Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2616219
    Reviewed-by: Mythri Alle <mythria@chromium.org>
    Commit-Queue: Georg Neis <neis@chromium.org>
    Cr-Original-Commit-Position: refs/branch-heads/8.8@{#23}
    Cr-Original-Branched-From: 2dbcdc105b963ee2501c82139eef7e0603977ff0-refs/heads/8.8.278@{#1}
    Cr-Original-Branched-From: 366d30c99049b3f1c673f8a93deb9f879d0fa9f0-refs/heads/master@{#71094}
    Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2649571
    Reviewed-by: Victor-Gabriel Savu <vsavu@google.com>
    Commit-Queue: Achuith Bhandarkar <achuith@chromium.org>
    Cr-Commit-Position: refs/branch-heads/8.6@{#56}
    Cr-Branched-From: a64aed2333abf49e494d2a5ce24bbd14fff19f60-refs/heads/8.6.395@{#1}
    Cr-Branched-From: a626bc036236c9bf92ac7b87dc40c9e538b087e3-refs/heads/master@{#69472}

Refs: v8/v8@ad2c5da
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@targos
targos committed Apr 27, 2021
commit e319c630c8b10cce06f81a914224d22fdaa48aff
2 changes: 1 addition & 1 deletion common.gypi
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Expand Up @@ -36,7 +36,7 @@

# Reset this number to 0 on major V8 upgrades.
# Increment by one for each non-official patch applied to deps/v8.
'v8_embedder_string': '-node.41',
'v8_embedder_string': '-node.42',

##### V8 defaults for Node.js #####

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1 change: 1 addition & 0 deletions deps/v8/src/deoptimizer/deoptimizer.cc
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Expand Up @@ -249,6 +249,7 @@ class ActivationsFinder : public ThreadVisitor {
SafepointEntry safepoint = code.GetSafepointEntry(it.frame()->pc());
int trampoline_pc = safepoint.trampoline_pc();
DCHECK_IMPLIES(code == topmost_, safe_to_deopt_);
CHECK_GE(trampoline_pc, 0);
// Replace the current pc on the stack with the trampoline.
// TODO(v8:10026): avoid replacing a signed pointer.
Address* pc_addr = it.frame()->pc_address();
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