[Bug target/81273] Wrong code generated for ARM setting volatile struct field with a literal

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81273

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |WAITING
   Last reconfirmed|                            |2017-07-03
     Ever confirmed|0                           |1

--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Your testcase cannot be built.  On GIMPLE ShowBug looks ok so the issue must
be at RTL expansion.  _NOTE_ that *(volatile uint32_t*) makes alignment
guarantees to the access while your TimerRegisters struct is aligned at byte
boundary only!  I suppose you may want
__attribute__((__packed__,aligned(alignof(uint32_t)))))?