http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58041
--- Comment #16 from Bernd Edlinger <bernd.edlinger at hotmail dot de> ---
(In reply to Bill Schmidt from comment #15)
> Bernd, Mikael, Martin: Could you please test this on your respective
> targets?
Congatulations!
it works.
If I compile with -mno-unaligned-access all accesses are
ldrb/strb as it should be.
And if I compile with -mcpu=cortex-a9 -munaligned-access
the code is also OK, no ldmia's any more. The back end seems to
have fixed that for us.
foo:
@ args = 0, pretend = 0, frame = 0
@ frame_needed = 0, uses_anonymous_args = 0
@ link register save eliminated.
add ip, r0, r1, asl #3
ldr r0, [ip, #1] @ unaligned
ldr r1, [ip, #5] @ unaligned
str r2, [ip, #1] @ unaligned
str r3, [ip, #5] @ unaligned
bx lr
which is perfectly OK for cortex-a9.
