Re: [PATCH] Use __attribute__((malloc)) for gcc 3.2

From: Andi Kleen (ak@muc.de)
Date: Sun Sep 29 2002 - 19:04:02 EST


Jakub Jelinek <jakub@redhat.com> writes:

> On Sun, Sep 29, 2002 at 05:27:31PM +0200, Andi Kleen wrote:
> >
> > gcc 3.2 has an __attribute__((malloc)) function attribute. It tells gcc
> > that a function returns newly allocated memory and that the return pointer
> > cannot alias with any other pointer in the parent function. This often
> > allows gcc to generate better code because the optimizer doesn't need take
> > pointer aliasing in account.
>
> Does this matter when the kernel is compiled with -fno-strict-aliasing?

I don't know. But it's certainly worth trying, isn't it ? Giving the
compiler more information can't be a bad thing.

-Andi
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/



This archive was generated by hypermail 2b29 : Mon Sep 30 2002 - 22:00:43 EST