MIPS: Fix missing falthru handling for some branch cases in TF.

MIPS: Fix missing falthru handling for some branch cases in TF.

TEST=mjsunit/asm/embenchen/zlib
BUG=

Committed: https://crrev.com/82339644b24eccad008335a8bcbcfcd6532823f0
Cr-Commit-Position: refs/heads/master@{#29735}

[dusmil.imgtec, 2015-07-17 13:08:20]

dusan.milosavljevic@imgtec.com changed reviewers:
+ akos.palfi@imgtec.com, balazs.kilvady@imgtec.com, jkummerow@chromium.org,
machenbach@chromium.org, paul.lind@imgtec.com

[dusmil.imgtec, 2015-07-17 13:08:21]

PTAL.

[Jakob Kummerow, 2015-07-17 13:14:04]

mjsunit.status LGTM.

Regarding the other changes: you have a 5-way if...else-if... sequence, where
every block ends with the same check. Why not pull that out and put it (once!)
after the last "else"? That would avoid the danger of forgetting it on two of
the five blocks ;-)

[dusmil.imgtec, 2015-07-17 14:37:14]

Right, thanks.

[paul.l..., 2015-07-17 15:32:10]

LGTM.

[dusmil.imgtec, 2015-07-17 15:36:38]

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

[dusmil.imgtec, 2015-07-17 15:36:38]

The patchset sent to the CQ was uploaded after l-g-t-m from
jkummerow@chromium.org
Link to the patchset: https://codereview.chromium.org/1232313007/#ps20001
(title: "Clean the code.")

[commit-bot: I haz the power, 2015-07-17 15:36:47]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1232313007/20001

[commit-bot: I haz the power, 2015-07-17 15:59:35]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2015-07-17 15:59:52]

Patchset 2 (id:??) landed as
https://crrev.com/82339644b24eccad008335a8bcbcfcd6532823f0
Cr-Commit-Position: refs/heads/master@{#29735}