[Bug inline-asm/56405] [4.8 Regression] ICE on questionable "m" argument

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56405

--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> 2013-02-20 09:42:51 UTC ---
Created attachment 29507
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=29507
gcc48-pr56405.patch

One possible fix, just handle EXPAND_MEMORY (which apparently is solely used
for inline asm inputs which allow memory, but disallow registers) the same as
EXPAND_WRITE, if it works, fine, if it doesn't work, it is inline asm writer's
bug.  In this particular case we know the pointer is definitely misaligned, but
in other cases we could just expect it to be misaligned, yet it could actually
be aligned e.g. if a base is some pointer.