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[Bug dynamic-link/15128] dynamic loader may clobber floating-point parameters on AArch64


http://sourceware.org/bugzilla/show_bug.cgi?id=15128

--- Comment #4 from Rich Felker <bugdal at aerifal dot cx> 2013-02-11 13:36:22 UTC ---
Putting ridiculous limitations outside of the standard ABI on what registers
may be used by any function that happens to get called during the resolver is
not a valid fix; if nothing else it's too fragile. The resolver is only called
once per symbol. A few extra cycles to save and restore fp registers will not
matter; the savings elsewhere from being able to use vector ops probably more
than compensate anyway.

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