Locally tested, octane results are the same or better when using
branchful decompression in generated code.

The biggest one is DeltaBlue in x64 which improves about 25%.
x64's EarleyBoyer is another important one with ~10% improvement.

Bug: v8:7703
Change-Id: Ie1edd6e216b307a1f5263b22472c0a64f76400fc
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1690955
Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
Reviewed-by: Sigurd Schneider <sigurds@chromium.org>
Cr-Commit-Position: refs/heads/master@{#62577}