3.4.12 –dbl_align_all[={yes|no}]

Force alignment of data on 8–byte boundaries

The value is either yes or no. If yes, all variables will be aligned on 8–byte boundaries. Default is -dbl_align_all=no.

When compiling for 64-bit environments with -m64, this flag will align quad-precision data on 16-byte boundaries.

This flag does not alter the layout of data in COMMON blocks or user-defined structures.

Use with -dalign to enable added efficiency with multi-word load/stores.

If used, all routines must be compiled with this flag.