[turbofan] The AstGraphBuilder does not need to care about types.

[turbofan] The AstGraphBuilder does not need to care about types.

AstGraphBuilder::BuildToBoolean() can be optimized easily without types,
especially since the types are only present on some nodes during graph
building. So this optimization is both more efficient and more effective
at the same time. We will probably refactor this code into a separate
optimization method/class later.

R=jarin@chromium.org

Committed: https://crrev.com/f1db38cae07f873e21ac57d2ff0cdc57134906c9
Cr-Commit-Position: refs/heads/master@{#29062}

[Benedikt Meurer, 2015-06-17 05:06:17]

bmeurer@chromium.org changed reviewers:
+ jarin@chromium.org
- mstarzinger@chromium.org

[Jarin, 2015-06-17 05:08:23]

lgtm

[Benedikt Meurer, 2015-06-17 05:10:12]

The CQ bit was checked by bmeurer@chromium.org

[commit-bot: I haz the power, 2015-06-17 05:10:20]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1188503003/1

[commit-bot: I haz the power, 2015-06-17 05:43:21]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-06-17 05:43:39]

Patchset 1 (id:??) landed as
https://crrev.com/f1db38cae07f873e21ac57d2ff0cdc57134906c9
Cr-Commit-Position: refs/heads/master@{#29062}