Reduce the number of registers used in MIPS optimizations.

This change is needed by ChromeOS as it introduces -fno-omit-frame-pointer
flag (see This causes
compile error for MIPS, as some MIPS optimization blocks use maximum possible
number of available registers.
Also, this change contains minor GN build fix for MIPS platform regarding the
pitch_filter_mips.c / pitch_filter_c.c file inclusion.


Review URL:

Patch from Ljubomir Papuga <>.

Cr-Commit-Position: refs/heads/master@{#9047}
2 files changed