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In the case of scale factors calculation optimizations, the inline assembly code has instructions which update flags register, but "cc" was not mentioned in the clobber list. When optimizing code, gcc theoretically is allowed to do a comparison before the inline assembly block, and a conditional branch after it which would lead to a problem if the flags register gets clobbered. While this is apparently not happening in practice with the current versions of gcc, the clobber list needs to be corrected. Regarding the other inline assembly blocks. While most likely it is actually unnecessary based on quick review, "cc" is also added there to the clobber list because it should have no impact on performance in practice. It's kind of cargo cult, but relieves us from the need to track the potential updates of flags register in all these places. |
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| bootstrap.sh | ||
| configure.ac | ||
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| GPL | ||
| LGPL | ||
| libpulse-browse.pc.in | ||
| libpulse-mainloop-glib.pc.in | ||
| libpulse-simple.pc.in | ||
| libpulse.pc.in | ||
| LICENSE | ||
| Makefile.am | ||
| orc.mak | ||
| PROTOCOL | ||
| pulseaudio-text.svg | ||
| pulseaudio.svg | ||
| README | ||
| todo | ||
PULSEAUDIO SOUND SERVER WEB SITE: http://pulseaudio.org/ GIT: git://git.0pointer.de/pulseaudio.git GITWEB: http://git.0pointer.de/?p=pulseaudio.git;a=summary MAILING LIST: https://tango.0pointer.de/mailman/listinfo/pulseaudio-discuss GIT COMMITS MAILING LIST: https://tango.0pointer.de/mailman/listinfo/pulseaudio-commits TRAC TICKET CHANGES MAILING LIST: https://tango.0pointer.de/mailman/listinfo/pulseaudio-tickets IRC: #pulseaudio on irc.freenode.org CIA: http://cia.navi.cx/stats/project/polypaudio FRESHMEAT: http://freshmeat.net/projects/pulseaudio/ OHLOH: http://www.ohloh.net/projects/4038 AUTHORS: Several