Version 4.4.63.23 (cherry-pick)

Merged 5379d8bc

[x64] Fix handling of Smi constants in LSubI and LBitI

BUG=chromium:478612
LOG=N
R=hablich@chromium.org

Review URL: https://codereview.chromium.org/1248293002 .

Cr-Commit-Position: refs/branch-heads/4.4@{#28}
Cr-Branched-From: 2e4c5505-refs/heads/4.4.63@{#1}
Cr-Branched-From: 0208b8e3-refs/heads/master@{#28333}