[Bug c/31319] New: Make big alignment for structs/arrays configurable

[vda dot linux at googlemail dot com]

Hi from busybox project.

We are concerned about gcc sometimes aligning structs and arrays to 256 bits on
i386. We would like to be able to disable it. The proposal is to implement new
x86-specific -m option, -mbigdata_align=N. N specifies how big the struct/array
should be in order to be "strongly" aligned.

Run-tested patch against 4.1.2 is attached.


-- 
           Summary: Make big alignment for structs/arrays configurable
           Product: gcc
           Version: 4.1.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: vda dot linux at googlemail dot com
 GCC build triplet: i386-pc-linux-gnu
  GCC host triplet: i386-pc-linux-gnu
GCC target triplet: i386-pc-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31319