[v11.x backport] deps: V8: cherry-pick 56f6a76

[BridgeAR]

Original commit message:

[turbofan] Fix -0 check for subnormals. Previously we'd check `x` for -0 by testing `(1.0 / x) == -Infinity`, but this will yield the wrong results when `x` is a subnormal, i.e. really close to 0. In CSA we already perform bit checks to test for -0, so teach TurboFan to do the same for comparisons to -0 (via `Object.is`). We introduce a new NumberIsMinusZero simplified operator to handle the case where SimplifiedLowering already knows that the input is a number. Bug: chromium:903043, v8:6882 Change-Id: I0cb7c568029b461a92fc183104d5f359b4bfe7f4 Reviewed-on: https://chromium-review.googlesource.com/c/1328802 Commit-Queue: Benedikt Meurer <[email protected]> Reviewed-by: Sigurd Schneider <[email protected]> Cr-Commit-Position: refs/heads/master@{#57382} 

Refs: v8/v8@56f6a76

Refs: #25268

Checklist

• make -j4 test (UNIX), or vcbuild test (Windows) passes
• tests and/or benchmarks are included
• documentation is changed or added
• commit message follows commit guidelines

[nodejs-github-bot]

@BridgeAR build started: https://ci.nodejs.org/blue/organizations/jenkins/node-test-pull-request-lite-pipeline/detail/node-test-pull-request-lite-pipeline/2103/pipeline

[BridgeAR]

Even though the commit lands cleanly, this relies on some other code. I do not have the time to dig into this @nodejs/v8 could you please check what is missing so this compiles on Node.js 11 (V8 7.1)?