[turbofan] Limit the load/store machine types to the ones we actually use.

[turbofan] Limit the load/store machine types to the ones we actually use.

Committed: https://crrev.com/a86db19e0a6ec9d428834813b138df67ba351edb
Cr-Commit-Position: refs/heads/master@{#30725}

[Jarin, 2015-09-14 13:40:25]

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

[Jarin, 2015-09-14 14:03:18]

Could you take a look, please?

(I tried to rewrite the representation change test not to use the hack with
load, but it looked terrible - I used a select with a float64 use, but I had to
keep it alive with Int32Add - it was too ugly, so I removed it.)

[Benedikt Meurer, 2015-09-15 04:37:40]

LGTM (I'm perfectly fine with removing some of the weird tests there, because
for some of them it's not even clear what they test, and even if you know what
they should test, it's not clear that they actually perform that test).

[Jarin, 2015-09-15 05:43:59]

The CQ bit was checked by jarin@chromium.org

[commit-bot: I haz the power, 2015-09-15 05:44:05]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1333353005/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1333353005/1

[commit-bot: I haz the power, 2015-09-15 05:45:25]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-09-15 05:45:41]

Patchset 1 (id:??) landed as
https://crrev.com/a86db19e0a6ec9d428834813b138df67ba351edb
Cr-Commit-Position: refs/heads/master@{#30725}