http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55026
Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2012-10-22
CC| |ebotcazou at gcc dot
| |gnu.org
Summary|[Multiple targets] |Useless stores generated
|Inefficient code with |for structures passed by
|structs passed by value |value
Ever Confirmed|0 |1
Severity|normal |enhancement
--- Comment #2 from Eric Botcazou <ebotcazou at gcc dot gnu.org> 2012-10-22
19:08:10 UTC ---
This depends on the internal argument passing mechanism (BLKmode registers vs
PARALLEL) and on the strict-alignment requirements of the architecture. Try:
struct __attribute__((aligned (8))) foo {
int a;
int b;
};
int f(struct foo x)
{
return x.a + x.b;
}
to watch the effects of the latter.
