X87: Megamorphic KeyedLoadIC needs special handling for vector ics

X87: Megamorphic KeyedLoadIC needs special handling for vector ics

port 16843e239d95f5e8eaaa06d2a0a6e371298fe11f (r26381)

original commit message:

  Megamorphic KeyedLoadIC needs special handling for vector ics.

  When --vector-ics is true, we still tail-call to the hand-written
  megamorphic KeyedLoadIC (formerly "generic"). Now that this code uses
  the megamorphic cache, it needs to deal properly with the vector and
  slot registers. Achieve this with a sentinel vectors/slot combo.

BUG=
R=weiliang.lin@intel.com

Committed: https://chromium.googlesource.com/v8/v8/+/b2e15510a845020554ea6b3430f5cf213a08fc54

[chunyang.dai, 2015-02-09 06:22:06]

chunyang.dai@intel.com changed reviewers:
+ weiliang.lin@intel.com

[chunyang.dai, 2015-02-09 06:22:21]

PTAL.

thanks

[Weiliang, 2015-02-09 06:31:00]

The CQ bit was checked by weiliang.lin@intel.com

[Weiliang, 2015-02-09 06:31:00]

lgtm

[commit-bot: I haz the power, 2015-02-09 06:31:47]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/910623002/1

[commit-bot: I haz the power, 2015-02-09 06:34:37]

Patchset 1 (id:??) landed as
https://crrev.com/b2e15510a845020554ea6b3430f5cf213a08fc54
Cr-Commit-Position: refs/heads/master@{#26508}

[chunyang.dai, 2015-02-09 06:34:42]

Committed patchset #1 (id:1) manually as
b2e15510a845020554ea6b3430f5cf213a08fc54 (presubmit successful).