[turbofan] Greedy: faster compile time.

[turbofan] Greedy: faster compile time.

Avoiding unnecessarily traversing conflicts when doing weight
comparisons. This reduced compile time regressions from a few
multiples to under 10% - at least for zlib.

Committed: https://crrev.com/1145090ad551ff3a8a8ce2e2adc9793eeca2a2c4
Cr-Commit-Position: refs/heads/master@{#30783}

[Mircea Trofin, 2015-09-16 23:32:28]

mtrofin@chromium.org changed reviewers:
+ bmeurer@chromium.org, jarin@chromium.org

[Benedikt Meurer, 2015-09-17 03:52:05]

Nice. LGTM.

[Benedikt Meurer, 2015-09-17 03:52:08]

The CQ bit was checked by bmeurer@chromium.org

[commit-bot: I haz the power, 2015-09-17 03:52:18]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1346263004/40001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1346263004/40001

[commit-bot: I haz the power, 2015-09-17 03:53:56]

Committed patchset #3 (id:40001)

[commit-bot: I haz the power, 2015-09-17 03:54:12]

Patchset 3 (id:??) landed as
https://crrev.com/1145090ad551ff3a8a8ce2e2adc9793eeca2a2c4
Cr-Commit-Position: refs/heads/master@{#30783}