MIPS: Use neg instruction in r6

MIPS: Use neg instruction in r6

Floating point negate instructions are still present in release 6, only
one format of neg is removed, NEG.PS. Others formats can be used and in
r6 they also change the sign of NaN-like operands as well. This makes r6
generated code simpler for Neg_d and Neg_s macroassembler functions.

BUG=

Committed: https://crrev.com/c37f6f02ed7046fd5492776e372d30f4a08afd0c
Cr-Commit-Position: refs/heads/master@{#38943}

[miran.karic, 2016-08-26 11:58:44]

miran.karic@imgtec.com changed reviewers:
+ akos.palfi@imgtec.com, balazs.kilvady@imgtec.com,
ivica.bogosavljevic@imgtec.com, marija.antic@imgtec.com

[miran.karic, 2016-08-26 11:58:45]

PTAL

[balazs.kilvady, 2016-08-26 12:18:13]

lgtm, I like it :)

[miran.karic, 2016-08-26 12:26:03]

The CQ bit was checked by miran.karic@imgtec.com

[commit-bot: I haz the power, 2016-08-26 12:26:12]

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, 2016-08-26 12:49:35]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-08-26 12:49:54]

Description was changed from

==========
MIPS: Use neg instruction in r6

Floating point negate instructions are still present in release 6, only
one format of neg is removed, NEG.PS. Others formats can be used and in
r6 they also change the sign of NaN-like operands as well. This makes r6
generated code simpler for Neg_d and Neg_s macroassembler functions.

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

to

==========
MIPS: Use neg instruction in r6

Floating point negate instructions are still present in release 6, only
one format of neg is removed, NEG.PS. Others formats can be used and in
r6 they also change the sign of NaN-like operands as well. This makes r6
generated code simpler for Neg_d and Neg_s macroassembler functions.

BUG=

Committed: https://crrev.com/c37f6f02ed7046fd5492776e372d30f4a08afd0c
Cr-Commit-Position: refs/heads/master@{#38943}
==========

[commit-bot: I haz the power, 2016-08-26 12:49:55]

Patchset 1 (id:??) landed as
https://crrev.com/c37f6f02ed7046fd5492776e372d30f4a08afd0c
Cr-Commit-Position: refs/heads/master@{#38943}