[Bug middle-end/54386] Unaligned mem load wrongly generated for inlined inline/static function

["mikpe at it dot uu.se" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54386

Mikael Pettersson <mikpe at it dot uu.se> changed:

           What    |Removed                     |Added
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                 CC|                            |mikpe at it dot uu.se

--- Comment #4 from Mikael Pettersson <mikpe at it dot uu.se> 2012-10-29 22:18:16 UTC ---
(In reply to comment #3)
> I've checked this issue again on rev 192482.  It seems to be target
> independent, as it also happens on ARM.
> The following:
> 
> static inline int readint (int* x)
> {
>   return *x;
> }
> 
> int test (int* x)
> {
>   return readint (x);
> }
> 
> compiles to (-O2):
> 
> test:
>         ldrb    r3, [r0]
>     ldrb    r1, [r0, #1]
>     ldrb    r2, [r0, #2]
>     orr    r3, r3, r1, asl #8
>     ldrb    r0, [r0, #3]
>     orr    r3, r3, r2, asl #16
>     orr    r0, r3, r0, asl #24
>     bx    lr

I see this poor code too on armv5tel-linux-gnueabi with 4.8-20121028.
4.7 and 4.6 generate just two instructions for test: a ldr and bx.