On Thu, 15 Jan 2009 22:54:44 +0100 Sam Ravnborg <sam@xxxxxxxxxxxx> wrote: > On Thu, Jan 15, 2009 at 01:30:37PM -0800, Andrew Morton wrote: > > > > My sparc64 gcc-3.4.5 cross-compiler has decided to start emitting calls > > to ____ilog2_NaN, due to > > > > eq_context->log_eq_size = ilog2(eq->nent); > > > > in drivers/net/mlx4/eq.c. There's another reference coming out of > > drivers/net/mlx4/srq.s. > > > > I guess this is a gcc bug - it's gone and decided that > > __builtin_constant_p(eq->nent) is true :( > > > > We've had this __builtin_constant_p() bogon occur before now - it > > happened with one or two kmalloc() callsites on x86 for some gcc > > versions, but we seemed to make it go away by some means. > > Googled a bit. > Seems to be influenced by use of -Os versus -O2. > Thanks. <checks> It's happening with both -Os and -O2. -- To unsubscribe from this list: send the line "unsubscribe sparclinux" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
