Float32x4, Int32x4, Uint32x4:
  load, load1, load2, load3

Int16x8, Int8x16, Uint16x8, Uint8x16:
  load

BUG=v8:4124
LOG=N

Review URL: https://codereview.chromium.org/1302133002

Cr-Commit-Position: refs/heads/master@{#30422}