- Added: Int32x4Mul, Int32x4Min, Int32x4Max, Int32x4Equal, Int32x4NotEqual
 Uint32x4Min, Uint32x4Max
 - Fix I32x4Splat

R=bbudge@chromium.org, bradnelson@chromium.org, mtrofin@chromium.org

Review-Url: https://codereview.chromium.org/2719953002
Cr-Commit-Position: refs/heads/master@{#43827}