deps: V8: cherry-pick ab2340a9b994

Original commit message:

    M86-LTS: [compiler] Fix a bug in VisitSpeculativeIntegerAdditiveOp

    (cherry picked from commit 9313c4ce3f32ad81df1c65becccec7e129181ce3)

    No-Try: true
    No-Presubmit: true
    No-Tree-Checks: true
    Bug: chromium:1199345
    Change-Id: I33bf71b33f43919fec4684054b5bf0a0787930ca
    Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2831478
    Reviewed-by: Nico Hartmann <[email protected]>
    Commit-Queue: Georg Neis <[email protected]>
    Cr-Original-Commit-Position: refs/heads/master@{#74008}
    Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2848412
    Commit-Queue: Artem Sumaneev <[email protected]>
    Reviewed-by: Victor-Gabriel Savu <[email protected]>
    Cr-Commit-Position: refs/branch-heads/8.6@{#86}
    Cr-Branched-From: a64aed2333abf49e494d2a5ce24bbd14fff19f60-refs/heads/8.6.395@{#1}
    Cr-Branched-From: a626bc036236c9bf92ac7b87dc40c9e538b087e3-refs/heads/master@{#69472}

Refs: v8/v8@ab2340a

Author: targos

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.61',
+    'v8_embedder_string': '-node.62',
 
     ##### V8 defaults for Node.js #####
 

deps/v8/src/compiler/simplified-lowering.cc

@@ -1426,10 +1426,15 @@ class RepresentationSelector {
     Type right_feedback_type = TypeOf(node->InputAt(1));
 
     // Using Signed32 as restriction type amounts to promising there won't be
-    // signed overflow. This is incompatible with relying on a Word32
-    // truncation in order to skip the overflow check.
+    // signed overflow. This is incompatible with relying on a Word32 truncation
+    // in order to skip the overflow check.  Similarly, we must not drop -0 from
+    // the result type unless we deopt for -0 inputs.
     Type const restriction =
-        truncation.IsUsedAsWord32() ? Type::Any() : Type::Signed32();
+        truncation.IsUsedAsWord32()
+            ? Type::Any()
+            : (truncation.identify_zeros() == kIdentifyZeros)
+                  ? Type::Signed32OrMinusZero()
+                  : Type::Signed32();
 
     // Handle the case when no int32 checks on inputs are necessary (but
     // an overflow check is needed on the output). Note that we do not