PPC/s390: [turbofan] Change Float64Max/Float64Min to JavaScript semantics.

PPC/s390: [turbofan] Change Float64Max/Float64Min to JavaScript semantics.

Port ba092fb09abb6ba3b7154444510c3b4cbdcf65f5

Original commit message:

    So far we don't have a useful way to inline Math.max or Math.min in
    TurboFan optimized code. This adds new operators NumberMax and NumberMin
    and changes the Float64Max/Float64Min operators to have JavaScript
    semantics instead of the C++ semantics that it had previously.

    This also removes support for recognizing the tenary case in the
    CommonOperatorReducer, since that doesn't seem to have any positive
    impact (and actually doesn't show up in regular JavaScript, where
    people use Math.max/Math.min instead).

    Drive-by-fix: Also nuke the unused Float32Max/Float32Min operators.

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

BUG=
LOG=N

Committed: https://crrev.com/aed69fd919dac8caa76bafc95bdcb9402a890014
Cr-Commit-Position: refs/heads/master@{#37991}

[JaideepBajwa, 2016-07-23 00:35:54]

PTAL

[john.yan, 2016-07-23 00:38:19]

lgtm

[JaideepBajwa, 2016-07-23 00:46:05]

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

[commit-bot: I haz the power, 2016-07-23 00:46:07]

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, 2016-07-23 01:09:12]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-07-23 01:10:24]

Description was changed from

==========
PPC/s390: [turbofan] Change Float64Max/Float64Min to JavaScript semantics.

Port ba092fb09abb6ba3b7154444510c3b4cbdcf65f5

Original commit message:

    So far we don't have a useful way to inline Math.max or Math.min in
    TurboFan optimized code. This adds new operators NumberMax and NumberMin
    and changes the Float64Max/Float64Min operators to have JavaScript
    semantics instead of the C++ semantics that it had previously.

    This also removes support for recognizing the tenary case in the
    CommonOperatorReducer, since that doesn't seem to have any positive
    impact (and actually doesn't show up in regular JavaScript, where
    people use Math.max/Math.min instead).

    Drive-by-fix: Also nuke the unused Float32Max/Float32Min operators.

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

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

to

==========
PPC/s390: [turbofan] Change Float64Max/Float64Min to JavaScript semantics.

Port ba092fb09abb6ba3b7154444510c3b4cbdcf65f5

Original commit message:

    So far we don't have a useful way to inline Math.max or Math.min in
    TurboFan optimized code. This adds new operators NumberMax and NumberMin
    and changes the Float64Max/Float64Min operators to have JavaScript
    semantics instead of the C++ semantics that it had previously.

    This also removes support for recognizing the tenary case in the
    CommonOperatorReducer, since that doesn't seem to have any positive
    impact (and actually doesn't show up in regular JavaScript, where
    people use Math.max/Math.min instead).

    Drive-by-fix: Also nuke the unused Float32Max/Float32Min operators.

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

BUG=
LOG=N

Committed: https://crrev.com/aed69fd919dac8caa76bafc95bdcb9402a890014
Cr-Commit-Position: refs/heads/master@{#37991}
==========

[commit-bot: I haz the power, 2016-07-23 01:10:25]

Patchset 1 (id:??) landed as
https://crrev.com/aed69fd919dac8caa76bafc95bdcb9402a890014
Cr-Commit-Position: refs/heads/master@{#37991}