MIPS: Fix long branch mode and FPU branches.

MIPS: Fix long branch mode and FPU branches.

- Add long branche mode for FPU branches.
- Fix FPU branches for unordered conditions.
- Provide FPU [un]ordered condition negation schema.

TEST=mjsunit/miror-objects, constant-folding-2, external-array
BUG=

Committed: https://crrev.com/c37f439b70b5b7bb97cbed77c322db787947861c
Cr-Commit-Position: refs/heads/master@{#28241}

[dusmil.imgtec, 2015-05-05 13:27:32]

dusan.milosavljevic@imgtec.com changed reviewers:
+ akos.palfi@imgtec.com, balazs.kilvady@imgtec.com, djordje.pesic@imgtec.com,
paul.lind@imgtec.com

[paul.l..., 2015-05-05 16:07:21]

LGTM, after you fix the one issue commented on....

https://codereview.chromium.org/1120753010/diff/1/src/mips64/macro-assembler-...
File src/mips64/macro-assembler-mips64.cc (right):

https://codereview.chromium.org/1120753010/diff/1/src/mips64/macro-assembler-...
src/mips64/macro-assembler-mips64.cc:1710: c(OLT, sizeField, cmp1, cmp2);
I don't think you mean to delete 'case lt:' here....

(And indentation whacked on following case.)

[dusmil.imgtec, 2015-05-05 18:11:29]

https://codereview.chromium.org/1120753010/diff/1/src/mips64/macro-assembler-...
File src/mips64/macro-assembler-mips64.cc (right):

https://codereview.chromium.org/1120753010/diff/1/src/mips64/macro-assembler-...
src/mips64/macro-assembler-mips64.cc:1710: c(OLT, sizeField, cmp1, cmp2);
On 2015/05/05 16:07:21, paul.l... wrote:
> I don't think you mean to delete 'case lt:' here....
> 
> (And indentation whacked on following case.)

Done.

[paul.l..., 2015-05-05 18:20:01]

lgtm

[dusmil.imgtec, 2015-05-05 18:53:13]

The CQ bit was checked by dusan.milosavljevic@imgtec.com

[commit-bot: I haz the power, 2015-05-05 18:53:35]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1120753010/20001

[commit-bot: I haz the power, 2015-05-05 19:20:47]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2015-05-05 19:21:08]

Patchset 2 (id:??) landed as
https://crrev.com/c37f439b70b5b7bb97cbed77c322db787947861c
Cr-Commit-Position: refs/heads/master@{#28241}