[runtime] Store constructor function index on primitive maps.

[runtime] Store constructor function index on primitive maps.

This way we can greatly simplify the different variants of ToObject in
our codebase and make them more uniform and robust.  Adding a new
primitive doesn't require finding and changing all those places again,
but it is sufficient to setup the constructor function index when
allocating the map.

We use the inobject properties field of Map, which is invalid primitive
maps anyway.

R=jkummerow@chromium.org

Committed: https://crrev.com/6c743b2b39ae4333e9451f99f3edb3e17e7ad2a5
Cr-Commit-Position: refs/heads/master@{#30119}

[Benedikt Meurer, 2015-08-11 13:55:14]

bmeurer@chromium.org changed reviewers:
+ yangguo@chromium.org

[Benedikt Meurer, 2015-08-11 13:55:15]

Hey Jakob, Yang,

This is the CL we talked about offline earlier.
Please take a look.

Thanks,
Benedikt

[Jakob Kummerow, 2015-08-11 16:01:48]

LGTM with comments that you have addressed already :-)

https://codereview.chromium.org/1276533003/diff/1/src/arm/builtins-arm.cc
File src/arm/builtins-arm.cc (right):

https://codereview.chromium.org/1276533003/diff/1/src/arm/builtins-arm.cc#new...
src/arm/builtins-arm.cc:446:
Map::kInObjectPropertiesOrConstructorFunctionIndexOffset *
You want s/Offset/Byte/ here.

https://codereview.chromium.org/1276533003/diff/1/src/arm64/builtins-arm64.cc
File src/arm64/builtins-arm64.cc (right):

https://codereview.chromium.org/1276533003/diff/1/src/arm64/builtins-arm64.cc...
src/arm64/builtins-arm64.cc:440:
Map::kInObjectPropertiesOrConstructorFunctionIndexOffset *
You want s/Offset/Byte/ here.

[Benedikt Meurer, 2015-08-11 19:34:15]

The CQ bit was checked by bmeurer@chromium.org

[commit-bot: I haz the power, 2015-08-11 19:34:36]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1276533003/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1276533003/20001

[commit-bot: I haz the power, 2015-08-11 19:36:12]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2015-08-11 19:36:23]

Patchset 2 (id:??) landed as
https://crrev.com/6c743b2b39ae4333e9451f99f3edb3e17e7ad2a5
Cr-Commit-Position: refs/heads/master@{#30119}