X87: [turbofan] Make MachineType a pair of enums.

X87: [turbofan] Make MachineType a pair of enums.

  port bb2a830debbff19cf5a510c920ff9ac88d41355c (r32738)

  original commit message:
  MachineType is now a class with two enum fields:
  - MachineRepresentation
  - MachineSemantic

  Both enums are usable on their own, and this change switches some places from using MachineType to use just MachineRepresentation. Most notably:
  - register allocator now uses just the representation.
  - Phi and Select nodes only refer to representations.

BUG=

Committed: https://crrev.com/da7c5a739cfcc307400496973ebf2251bea16710
Cr-Commit-Position: refs/heads/master@{#32778}

[zhengxing.li, 2015-12-11 03:29:19]

zhengxing.li@intel.com changed reviewers:
+ chunyang.dai@intel.com, jarin@chromium.org, weiliang.lin@intel.com

[Weiliang, 2015-12-11 04:45:07]

The CQ bit was checked by weiliang.lin@intel.com

[Weiliang, 2015-12-11 04:45:08]

lgtm

[commit-bot: I haz the power, 2015-12-11 04:45:14]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1520793002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1520793002/1

[commit-bot: I haz the power, 2015-12-11 05:07:33]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-12-11 05:07:55]

Description was changed from

==========
X87: [turbofan] Make MachineType a pair of enums.

  port bb2a830debbff19cf5a510c920ff9ac88d41355c (r32738)

  original commit message:
  MachineType is now a class with two enum fields:
  - MachineRepresentation
  - MachineSemantic

  Both enums are usable on their own, and this change switches some places from
using MachineType to use just MachineRepresentation. Most notably:
  - register allocator now uses just the representation.
  - Phi and Select nodes only refer to representations.

BUG=
==========

to

==========
X87: [turbofan] Make MachineType a pair of enums.

  port bb2a830debbff19cf5a510c920ff9ac88d41355c (r32738)

  original commit message:
  MachineType is now a class with two enum fields:
  - MachineRepresentation
  - MachineSemantic

  Both enums are usable on their own, and this change switches some places from
using MachineType to use just MachineRepresentation. Most notably:
  - register allocator now uses just the representation.
  - Phi and Select nodes only refer to representations.

BUG=

Committed: https://crrev.com/da7c5a739cfcc307400496973ebf2251bea16710
Cr-Commit-Position: refs/heads/master@{#32778}
==========

[commit-bot: I haz the power, 2015-12-11 05:07:55]

Patchset 1 (id:??) landed as
https://crrev.com/da7c5a739cfcc307400496973ebf2251bea16710
Cr-Commit-Position: refs/heads/master@{#32778}