PPC: Store Floats as 4 bytes and Double as 8 bytes for codegen

PPC: Store Floats as 4 bytes and Double as 8 bytes for codegen

R=joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com, mbrandy@us.ibm.com, bjaideep@ca.ibm.com

BUG=

Committed: https://crrev.com/d048ed80c64a7775287d04836da554d7d0e62370
Cr-Commit-Position: refs/heads/master@{#36749}

[JaideepBajwa, 2016-06-06 00:10:47]

PTAL

[john.yan, 2016-06-06 13:08:15]

lgtm with one comment: I think Float32 would be a better name than Single.

[JaideepBajwa, 2016-06-06 13:28:18]

On 2016/06/06 13:08:15, john.yan wrote:
> lgtm with one comment: I think Float32 would be a better name than Single.

I've used single/double to be consistent with isa naming convention, added those
macro functions as part of https://codereview.chromium.org/1962773002

[JaideepBajwa, 2016-06-06 13:28:23]

The CQ bit was checked by bjaideep@ca.ibm.com

[commit-bot: I haz the power, 2016-06-06 13:28:35]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/2043553002/1

[commit-bot: I haz the power, 2016-06-06 13:56:29]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-06-06 13:59:05]

Description was changed from

==========
PPC: Store Floats as 4 bytes and Double as 8 bytes for codegen

R=joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com,
mbrandy@us.ibm.com, bjaideep@ca.ibm.com

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

to

==========
PPC: Store Floats as 4 bytes and Double as 8 bytes for codegen

R=joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com,
mbrandy@us.ibm.com, bjaideep@ca.ibm.com

BUG=

Committed: https://crrev.com/d048ed80c64a7775287d04836da554d7d0e62370
Cr-Commit-Position: refs/heads/master@{#36749}
==========

[commit-bot: I haz the power, 2016-06-06 13:59:06]

Patchset 1 (id:??) landed as
https://crrev.com/d048ed80c64a7775287d04836da554d7d0e62370
Cr-Commit-Position: refs/heads/master@{#36749}