arm-elf-gcc memcpy builtin?

[Grant Edwards]

It appears that our embedded ARM7 application is spending a
significant amount of time is being spent inside memcpy.  I've
tried everything I can think of to get gcc to use builtin
memcpy code, but it just won't.

I've tried various values of -O, I've added -fbuiltin, I've
even tried explictly calling __builtin_memcpy().  Nothing
works.  No matter what I do, gcc just loads up the parameters
and makes a call to memcpy().

Does the ARM back end not know how to do a built-in memcpy?

$ arm-elf-gcc -v
Reading specs from /usr/local/lib/gcc-lib/arm-elf/2.95.2/specs
gcc version 2.95.2 19991024 (release)

-- 
Grant Edwards
grante@visi.com

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