Alex Gonzalez writes:
> Hi, trying to come up with a testcase we figured out what the problem could
> be.
>
> When the optimizer is on and memcpy sees that it is copying a
> struct with double words in it, it will assume that the struct
> starts on an 8 byte boundary and use double word loa
Hi, trying to come up with a testcase we figured out what the problem could be.
When the optimizer is on and memcpy sees that it is copying a struct
with double words in it, it will assume that the struct starts on an 8
byte boundary and use double word loads and stores. This is a safe
assumption,
On Thursday 09 August 2007, Alex Gonzalez wrote:
> Hi,
>
> I'll try to come up with a short test.
>
> I have narrowed it a bit more. The PVAR structure contains a long long
> variable ( with a sizeof 8 and an alignof 8 for my architecture). If I
> take out the long long variable, the compiler uses
Hi,
I'll try to come up with a short test.
I have narrowed it a bit more. The PVAR structure contains a long long
variable ( with a sizeof 8 and an alignof 8 for my architecture). If I
take out the long long variable, the compiler uses sdl instructions
instead of sd and the exception doesn't happ
Alex Gonzalez wrote:
Hi,
I am seeing an address error exception caused by the gcc optimizer -O1.
I have narrowed it down to the following function:
static void varcopy(PVAR *pvar1, PVAR *pvar2) {
memcpy(pvar1,pvar2,sizeof(PVAR));
}
Being the sizeof(PVAR) 160 bytes.
The exception is cause
"Alex Gonzalez" <[EMAIL PROTECTED]> writes:
> I was under the assumption that the compiler made sure that it doesn't
> store a doubleword that is not aligned on a doubleword boundary. Is
> this a bug in the optimizer?
If the pointers are not correctly aligned for their target type then you
are in
Hi,
I am seeing an address error exception caused by the gcc optimizer -O1.
I have narrowed it down to the following function:
static void varcopy(PVAR *pvar1, PVAR *pvar2) {
memcpy(pvar1,pvar2,sizeof(PVAR));
}
Being the sizeof(PVAR) 160 bytes.
The exception is caused on an sd instruction
