On Thu, Jun 13, 2013 at 11:37 AM, Alan Modra <amo...@gmail.com> wrote:
> Revised patch with offsettable_ok_by_alignment change, avoiding dumb > idea of using statement expressions. This one actually bootstraps and > passes regression testing. > > * config/rs6000/rs6000.h (enum data_align): New. > (LOCAL_ALIGNMENT, DATA_ALIGNMENT): Use rs6000_data_alignment. > (DATA_ABI_ALIGNMENT): Define. > (CONSTANT_ALIGNMENT): Correct comment. > * config/rs6000/rs6000-protos.h (rs6000_data_alignment): Declare. > * config/rs6000/rs6000.c (rs6000_data_alignment): New function. The revised patch, without the DECL_P part is okay. The original code produced the necessary alignment and neither of us can find any code in public packages that increases the alignment for PPC vector types. While there is the possibility that a user could encounter an object file produced by an older GCC with less strict alignment and a version of GCC with this fix would make an incorrect assumption, this does not seem very likely in practice. Thanks, David
