> Fair enough, you can add this code if you want. Thanks. Note that this is marginal for Solaris as GCC defaults to -mcpu=v9 on Solaris but, in all other cases, it defaults to -mcpu=v8. I can reproduce the problem on the SPARC/Linux machine 'grobluk' of the CompileFarm:
cpu : TI UltraSparc II (BlackBird) fpu : UltraSparc II integrated FPU prom : OBP 3.2.30 2002/10/25 14:03 type : sun4u ncpus probed : 4 ncpus active : 4 Linux grobluk 2.6.26-2-sparc64-smp #1 SMP Thu Nov 5 03:34:29 UTC 2009 sparc64 GNU/Linux With the pristine compiler, the test passes with -mcpu=v9 but fails otherwise. It passes with the patched compiler. However, I suspect that we would still have problems with newer UltraSparc CPUs supporting full RMO, because the new insn membar_v8 is only half a memory barrier for V9. -- Eric Botcazou
