Fix context register allocation in LTransitionElementsKind.

Fix context register allocation in LTransitionElementsKind.

R=yangguo@chromium.org
BUG=chromium:324306
LOG=N

Committed: http://code.google.com/p/v8/source/detail?r=18150

[Michael Starzinger, 2013-11-28 15:35:19]

This is the simplest proposed fix, by telling the register allocator to used
esi/rsi for the context. This increases register pressure slightly and I am
still checking whether if that affects performance.

[Yang, 2013-11-28 15:39:13]

On 2013/11/28 15:35:19, Michael Starzinger wrote:
> This is the simplest proposed fix, by telling the register allocator to used
> esi/rsi for the context. This increases register pressure slightly and I am
> still checking whether if that affects performance.

LGTM.

[Michael Starzinger, 2013-11-29 09:47:49]

Committed patchset #1 manually as r18150 (presubmit successful).