S390: Decouple Add/Sub/Neg to 32/64 Bit Op

S390: Decouple Add/Sub/Neg to 32/64 Bit Op

1. Decouple kS390_Add/Sub/Neg to
     kS390_Add32/Sub32/Neg32/Add64/Sub64/Neg64
2. Nuke kS390_Add/SubWithOverflow32
3. Add Support for Load-On-Condition to optimize AssembleArchBoolean

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

Committed: https://crrev.com/dc88458120e846f7489dc8969e2ed2db12084a6c
Cr-Commit-Position: refs/heads/master@{#38443}

[john.yan, 2016-08-08 05:08:38]

PTAL

[JaideepBajwa, 2016-08-08 12:45:20]

lgtm

[john.yan, 2016-08-08 13:38:33]

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

[commit-bot: I haz the power, 2016-08-08 13:38:38]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2016-08-08 14:02:57]

Committed patchset #3 (id:40001)

[commit-bot: I haz the power, 2016-08-08 14:05:17]

Description was changed from

==========
S390: Decouple Add/Sub/Neg to 32/64 Bit Op

1. Decouple kS390_Add/Sub/Neg to
     kS390_Add32/Sub32/Neg32/Add64/Sub64/Neg64
2. Nuke kS390_Add/SubWithOverflow32
3. Add Support for Load-On-Condition to optimize AssembleArchBoolean

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

to

==========
S390: Decouple Add/Sub/Neg to 32/64 Bit Op

1. Decouple kS390_Add/Sub/Neg to
     kS390_Add32/Sub32/Neg32/Add64/Sub64/Neg64
2. Nuke kS390_Add/SubWithOverflow32
3. Add Support for Load-On-Condition to optimize AssembleArchBoolean

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

Committed: https://crrev.com/dc88458120e846f7489dc8969e2ed2db12084a6c
Cr-Commit-Position: refs/heads/master@{#38443}
==========

[commit-bot: I haz the power, 2016-08-08 14:05:18]

Patchset 3 (id:??) landed as
https://crrev.com/dc88458120e846f7489dc8969e2ed2db12084a6c
Cr-Commit-Position: refs/heads/master@{#38443}