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@{nodejs#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@{nodejs#56}
    Cr-Branched-From: a64aed2333abf49e494d2a5ce24bbd14fff19f60-refs/heads/8.6.395@{#1}
    Cr-Branched-From: a626bc036236c9bf92ac7b87dc40c9e538b087e3-refs/heads/master@{#69472}

Refs: v8/v8@ad2c5da

PR-URL: nodejs#38275
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Jiawen Geng <technicalcute@gmail.com>
Reviewed-By: Shelley Vohr <codebytere@gmail.com>

common.gypi

@@ -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 #####
 

deps/v8/src/deoptimizer/deoptimizer.cc

@@ -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();