PPC: [wasm] Int64Lowering of Int64Sub.

PPC: [wasm] Int64Lowering of Int64Sub.

Port 33c08596e10f8ed64f8097049ac6c424c0616ee1

Original commit message:
    Int64Sub is lowered to a new turbofan operator, Int32SubPair. The new
    operator takes 4 inputs an generates 2 outputs. The inputs are the low
    word of the left input, high word of the left input, the low word of the
    right input, and high word of the right input. The ouputs are the low
    and high word of the result of the subtraction.

    The implementation is very similar to the implementation of Int64Add.

R=ahaas@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com
BUG=

Committed: https://crrev.com/eb0a2324a1689f8eea35c2f2efc5d503e60062e3
Cr-Commit-Position: refs/heads/master@{#34821}

[MTBrandyberry, 2016-03-16 14:29:27]

Description was changed from

==========
PPC: [wasm] Int64Lowering of Int64Sub.

Port 33c08596e10f8ed64f8097049ac6c424c0616ee1

Original commit message:
    Int64Sub is lowered to a new turbofan operator, Int32SubPair. The new
    operator takes 4 inputs an generates 2 outputs. The inputs are the low
    word of the left input, high word of the left input, the low word of the
    right input, and high word of the right input. The ouputs are the low
    and high word of the result of the subtraction.

    The implementation is very similar to the implementation of Int64Add.

R=ahaas@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com,
michael_dawson@ca.ibm.com
BUG=
==========

to

==========
PPC: [wasm] Int64Lowering of Int64Sub.

Port 33c08596e10f8ed64f8097049ac6c424c0616ee1

Original commit message:
    Int64Sub is lowered to a new turbofan operator, Int32SubPair. The new
    operator takes 4 inputs an generates 2 outputs. The inputs are the low
    word of the left input, high word of the left input, the low word of the
    right input, and high word of the right input. The ouputs are the low
    and high word of the result of the subtraction.

    The implementation is very similar to the implementation of Int64Add.

R=ahaas@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com,
michael_dawson@ca.ibm.com
BUG=
==========

[MTBrandyberry, 2016-03-16 14:29:28]

mbrandy@us.ibm.com changed reviewers:
+ titzer@chromium.org

[MTBrandyberry, 2016-03-16 14:29:53]

PTAL.  Needs owner approval for cctest change.

[MTBrandyberry, 2016-03-16 14:29:57]

The CQ bit was checked by mbrandy@us.ibm.com to run a CQ dry run

[commit-bot: I haz the power, 2016-03-16 14:30:07]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1812473002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1812473002/1

[titzer, 2016-03-16 14:31:07]

On 2016/03/16 14:30:07, commit-bot: I haz the power wrote:
> Dry run: CQ is trying da patch. Follow status at
>  https://chromium-cq-status.appspot.com/patch-status/1812473002/1
> View timeline at
>  https://chromium-cq-status.appspot.com/patch-timeline/1812473002/1

lgtm

[michael_dawson, 2016-03-16 14:45:42]

On 2016/03/16 14:31:07, titzer wrote:
> On 2016/03/16 14:30:07, commit-bot: I haz the power wrote:
> > Dry run: CQ is trying da patch. Follow status at
> >  https://chromium-cq-status.appspot.com/patch-status/1812473002/1
> > View timeline at
> >  https://chromium-cq-status.appspot.com/patch-timeline/1812473002/1
> 
> lgtm

lgtm

[commit-bot: I haz the power, 2016-03-16 14:49:54]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2016-03-16 14:49:55]

Dry run: This issue passed the CQ dry run.

[MTBrandyberry, 2016-03-16 15:14:27]

The CQ bit was checked by mbrandy@us.ibm.com

[commit-bot: I haz the power, 2016-03-16 15:14:36]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1812473002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1812473002/1

[commit-bot: I haz the power, 2016-03-16 15:26:01]

Description was changed from

==========
PPC: [wasm] Int64Lowering of Int64Sub.

Port 33c08596e10f8ed64f8097049ac6c424c0616ee1

Original commit message:
    Int64Sub is lowered to a new turbofan operator, Int32SubPair. The new
    operator takes 4 inputs an generates 2 outputs. The inputs are the low
    word of the left input, high word of the left input, the low word of the
    right input, and high word of the right input. The ouputs are the low
    and high word of the result of the subtraction.

    The implementation is very similar to the implementation of Int64Add.

R=ahaas@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com,
michael_dawson@ca.ibm.com
BUG=
==========

to

==========
PPC: [wasm] Int64Lowering of Int64Sub.

Port 33c08596e10f8ed64f8097049ac6c424c0616ee1

Original commit message:
    Int64Sub is lowered to a new turbofan operator, Int32SubPair. The new
    operator takes 4 inputs an generates 2 outputs. The inputs are the low
    word of the left input, high word of the left input, the low word of the
    right input, and high word of the right input. The ouputs are the low
    and high word of the result of the subtraction.

    The implementation is very similar to the implementation of Int64Add.

R=ahaas@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com,
michael_dawson@ca.ibm.com
BUG=
==========

[commit-bot: I haz the power, 2016-03-16 15:26:02]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-03-16 15:26:30]

Description was changed from

==========
PPC: [wasm] Int64Lowering of Int64Sub.

Port 33c08596e10f8ed64f8097049ac6c424c0616ee1

Original commit message:
    Int64Sub is lowered to a new turbofan operator, Int32SubPair. The new
    operator takes 4 inputs an generates 2 outputs. The inputs are the low
    word of the left input, high word of the left input, the low word of the
    right input, and high word of the right input. The ouputs are the low
    and high word of the result of the subtraction.

    The implementation is very similar to the implementation of Int64Add.

R=ahaas@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com,
michael_dawson@ca.ibm.com
BUG=
==========

to

==========
PPC: [wasm] Int64Lowering of Int64Sub.

Port 33c08596e10f8ed64f8097049ac6c424c0616ee1

Original commit message:
    Int64Sub is lowered to a new turbofan operator, Int32SubPair. The new
    operator takes 4 inputs an generates 2 outputs. The inputs are the low
    word of the left input, high word of the left input, the low word of the
    right input, and high word of the right input. The ouputs are the low
    and high word of the result of the subtraction.

    The implementation is very similar to the implementation of Int64Add.

R=ahaas@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com,
michael_dawson@ca.ibm.com
BUG=

Committed: https://crrev.com/eb0a2324a1689f8eea35c2f2efc5d503e60062e3
Cr-Commit-Position: refs/heads/master@{#34821}
==========

[commit-bot: I haz the power, 2016-03-16 15:26:32]

Patchset 1 (id:??) landed as
https://crrev.com/eb0a2324a1689f8eea35c2f2efc5d503e60062e3
Cr-Commit-Position: refs/heads/master@{#34821}