s390x: Fix the logic to detect INT_MIN in simulator

s390x: Fix the logic to detect INT_MIN in simulator

Converting INT_MIN to positive should cause overflow,
which was not being captured. Fixed the logic to detect
if value is equal to INT_MIN and set the overflow code
accordingly.

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

BUG=
LOG=N

Committed: https://crrev.com/4d6df11f2c8ed0968c0a34a480c5f4a3e1dc3cca
Cr-Commit-Position: refs/heads/master@{#40631}

[JaideepBajwa, 2016-10-27 21:23:57]

PTAL

[john.yan, 2016-10-27 21:30:23]

lgtm

[JaideepBajwa, 2016-10-27 21:31:12]

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

[commit-bot: I haz the power, 2016-10-27 21:31:18]

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, 2016-10-27 22:05:23]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2016-11-17 22:15:59]

Description was changed from

==========
s390x: Fix the logic to detect INT_MIN in simulator

Converting INT_MIN to positive should cause overflow,
which was not being captured. Fixed the logic to detect
if value is equal to INT_MIN and set the overflow code
accordingly.

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

BUG=
LOG=N
==========

to

==========
s390x: Fix the logic to detect INT_MIN in simulator

Converting INT_MIN to positive should cause overflow,
which was not being captured. Fixed the logic to detect
if value is equal to INT_MIN and set the overflow code
accordingly.

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

BUG=
LOG=N

Committed: https://crrev.com/4d6df11f2c8ed0968c0a34a480c5f4a3e1dc3cca
Cr-Commit-Position: refs/heads/master@{#40631}
==========

[commit-bot: I haz the power, 2016-11-17 22:16:00]

Patchset 2 (id:??) landed as
https://crrev.com/4d6df11f2c8ed0968c0a34a480c5f4a3e1dc3cca
Cr-Commit-Position: refs/heads/master@{#40631}