Hi,
When you link against libc there is a filter mechanism that provides
platform specific versions of key libc routines, like mem*. These
routines are located in libc_psr. So if you call libc, you don't need to
worry about using platform specific optimised versions of key routines,
it happens automatically.
If you want to confirm this, profile your app using the performance
analyzer and look at the code that is used for the mem* routines.
Regards,
Darryl.
On 03/30/10 00:34, jf simon wrote:
Hi,
Bart Smaalders wrote:
The libc mem* routines already use VIS instructions to good effect on
SPARC platforms, and platform teams regularly enhance these functions
for both existing and new hardware.
i want to use these VIS enhanced mem* functions on a Niagara T2
system. do i need to specify specific options for sun studio in
CFLAGS? like "-sparcvis" ? or is it just a matter of linking with
the right libc?
in short how to be sure i am indeed using VIS?
thx a lot
-jfs
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Darryl Gove
Compiler Performance Engineering
Blog : http://blogs.sun.com/d/
Books: http://www.sun.com/books/catalog/solaris_app_programming.xml
http://my.safaribooksonline.com/0595352510
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