[turbofan] add MachineType to AllocatedOperand

[turbofan] add MachineType to AllocatedOperand

- allows the optimization of emitted gap move code since the representation of the value in the register is known
- necessary preparation for vector register allocation
- prepare for slot sharing for any value of the same byte width

BUG=

Committed: https://crrev.com/3a025d1ab6437559f86a464767aa03d2d9789f6f
Cr-Commit-Position: refs/heads/master@{#28137}

[dcarney, 2015-04-29 13:43:49]

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

[dcarney, 2015-04-29 13:43:56]

ptal

[Jarin, 2015-04-29 14:12:34]

lgtm.

https://codereview.chromium.org/1087793002/diff/290001/src/compiler/instructi...
File src/compiler/instruction.cc (right):

https://codereview.chromium.org/1087793002/diff/290001/src/compiler/instructi...
src/compiler/instruction.cc:76: if (FLAG_turbo_trace_allocated_types) {
Do we need the flag? It should be ok to print this always.

[dcarney, 2015-04-29 14:21:52]

The CQ bit was checked by dcarney@chromium.org

[dcarney, 2015-04-29 14:21:52]

The patchset sent to the CQ was uploaded after l-g-t-m from jarin@chromium.org
Link to the patchset: https://codereview.chromium.org/1087793002/#ps310001
(title: "no flag")

[commit-bot: I haz the power, 2015-04-29 14:22:00]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1087793002/310001

[commit-bot: I haz the power, 2015-04-29 14:46:14]

Committed patchset #17 (id:310001)

[commit-bot: I haz the power, 2015-04-29 14:46:28]

Patchset 17 (id:??) landed as
https://crrev.com/3a025d1ab6437559f86a464767aa03d2d9789f6f
Cr-Commit-Position: refs/heads/master@{#28137}

[Michael Achenbach, 2015-04-29 18:28:02]

A revert of this CL (patchset #17 id:310001) has been created in
https://codereview.chromium.org/1119483003/ by machenbach@chromium.org.

The reason for reverting is: [Sheriff] Breaks compile on chromium asan and v8
msan:
http://build.chromium.org/p/client.v8/builders/Linux%20ASAN%20Builder/builds/...
http://build.chromium.org/p/client.v8/builders/V8%20Linux%20-%20arm64%20-%20s....