[Bug libc/6730] New: [PARISC] small atomic.h optimization

["deller at gmx dot de" <sourceware-bugzilla at sourceware dot org>]

In the file ports/sysdeps/unix/sysv/linux/hppa/bits/atomic.h a LWS call is 
done, and then the kernel return value is negated (from - to +) with this 
line:
 sub   %%r0, %%r21, %%r21  
A small optimization is to drop this negation and instead change
 if(lws_errno == EFAULT || lws_errno == ENOSYS)
to 
 if(lws_errno == -EFAULT || lws_errno == -ENOSYS)

-- 
           Summary: [PARISC] small atomic.h optimization
           Product: glibc
           Version: 2.4
            Status: NEW
          Severity: enhancement
          Priority: P2
         Component: libc
        AssignedTo: carlos at systemhalted dot org
        ReportedBy: deller at gmx dot de
                CC: glibc-bugs at sources dot redhat dot com


http://sourceware.org/bugzilla/show_bug.cgi?id=6730

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