On Wed, 16 Mar 2005, Mark Mitchell wrote: > > It seems like we are lying about the alignment of the pa, pb, pc > > arguments but I don't see a way around this. > > Make them array arguments, instead of pointer arguments. I'm not sure if GCC > is smart enough to still vectorize them in that case, but that's the right way > to express it. An aligned array-of-floats decays to an aligned > pointer-to-float, i.e., the pointer is known to be aligned, but the object > pointed to is just a float not an aligned float.
And arithmetic on an aligned pointer-to-float should then result in a plain pointer-to-float. We don't yet implement either attributes on array parameters applying to the array not the pointer, or attributes inside the [] of the array parameter applying to the pointer. (This is documented in "Attribute Syntax".) -- Joseph S. Myers http://www.srcf.ucam.org/~jsm28/gcc/ [EMAIL PROTECTED] (personal mail) [EMAIL PROTECTED] (CodeSourcery mail) [EMAIL PROTECTED] (Bugzilla assignments and CCs)
