Added vector-based loadic hydrogen stubs. Not yet callable.

Added vector-based loadic hydrogen stubs. Not yet callable.

The next step is to integrate the use of vector[slot] into the IC
infrastructure so it can do the right thing for a vector-based ic.
Then these stubs can be installed. For now, they immediately bail out
to the miss handler.

R=verwaest@chromium.org

Committed: https://code.google.com/p/v8/source/detail?r=23405

[mvstanton, 2014-08-26 12:55:07]

Hi Toon,
This CL adds the 4 required code stubs to the system for vector based load ICs:
the load and keyed load trampoline editions, and the load and keyed load full
vector convention hydrogen code stubs, which immediately bail out to miss
handlers.

This seems to complete a set of new "boilerplate" infrastructure types needed.
Future work will mostly be within existing IC classes.

PTAL, thanks!
--Michael

[Toon Verwaest, 2014-08-26 13:26:57]

lgtm with comment

https://codereview.chromium.org/499343002/diff/40001/src/arm64/code-stubs-arm...
File src/arm64/code-stubs-arm64.cc (right):

https://codereview.chromium.org/499343002/diff/40001/src/arm64/code-stubs-arm...
src/arm64/code-stubs-arm64.cc:4603: void
LoadICTrampolineStub::Generate(MacroAssembler* masm) {
Why not make this virtual?

[mvstanton, 2014-08-26 14:12:57]

Committed patchset #3 manually as 23405 (presubmit successful).