[Bug target/37651] __sync_bool_compare_and_swap creates wrong code with -fPIC

[brian at dessent dot net]

------- Comment #2 from brian at dessent dot net  2008-09-25 22:29 -------
Subject: Re:  __sync_bool_compare_and_swap creates wrong code 
 with -fPIC

You get that if the variable is auto, but if it's static the reference
is with a GOTOFF reloc:

        xorl    %edi, %edi
        pushl   %ebx
        call    .L6
.L6:
        popl    %ebx
        addl    $_GLOBAL_OFFSET_TABLE_+[.-.L6], %ebx
        pushl   %ecx
        movl    %edi, %ecx
        xchgl   %ebx, %edi
        lock cmpxchg8b  s_u64.1229@GOTOFF(%ebx)


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37651