> Symbols with their address taken are only renamed when they appear as
> virtual operands. So, if you have:
>
> p_3 = (i_5 > 10) ? &a : &b
> a = 4
>
> notice that 'a' is never renamed in the LHS of the assignment. It's
> renamed as a virtual operand:
>
> p_3 = (i_5 > 10) ? &a : &
On Tue, Feb 26, 2008 at 04:44, Fran Baena <[EMAIL PROTECTED]> wrote:
> if ()
> t_1 = & a_1;t_1 points-to { a_1 }
> else
> if ()
> t2_ = & b_1; t_2 points-to { b_1 }
> else
> t_3 = & c_1; t_3 points-to { c_1 }
>
> # t_4 = PHI
> p_1 = t_4; p_1 and t_
>
> When there are no symbols in the pointer's points-to set.
>
I am beginning to realize. But there is something it remains:
1) Once the ssa rename has been done, the alias analysis begins
(points-to sets). Each version of a base pointer has associated its
own points-to set? Like
if ()
t_1 =
On Mon, Feb 25, 2008 at 10:25, Fran Baena <[EMAIL PROTECTED]> wrote:
> If a name tag is associated to a ssa name, ¿when does it make sense to
> version a name tag? (If it does)
When there are no symbols in the pointer's points-to set.
Diego.
If a name tag is associated to a ssa name, ¿when does it make sense to
version a name tag? (If it does)
2008/2/21, Diego Novillo <[EMAIL PROTECTED]>:
> On 2/21/08 1:13 PM, Fran Baena wrote:
> > 2008/2/21, Diego Novillo <[EMAIL PROTECTED]>:
> >> On 2/19/08 2:27 PM, Fran Baena wrote:
> >> > Hi e
On 2/21/08 1:13 PM, Fran Baena wrote:
2008/2/21, Diego Novillo <[EMAIL PROTECTED]>:
On 2/19/08 2:27 PM, Fran Baena wrote:
> Hi everybody,
>
> i am studing how gcc carries out Alias Representation and some questions
appear.
>
> For instance, given this code portion:
>
> if ( ... )
>
2008/2/21, Diego Novillo <[EMAIL PROTECTED]>:
> On 2/19/08 2:27 PM, Fran Baena wrote:
> > Hi everybody,
> >
> > i am studing how gcc carries out Alias Representation and some questions
> appear.
> >
> > For instance, given this code portion:
> >
> > if ( ... )
> >p = &a;
> > else
>
On 2/19/08 2:27 PM, Fran Baena wrote:
Hi everybody,
i am studing how gcc carries out Alias Representation and some questions appear.
For instance, given this code portion:
if ( ... )
p = &a;
else
if ( ... )
p = &b;
else
p = &c;
a = 5;
b = 3;
d = *p4;
My questions are
Hi everybody,
i am studing how gcc carries out Alias Representation and some questions appear.
For instance, given this code portion:
if ( ... )
p = &a;
else
if ( ... )
p = &b;
else
p = &c;
a = 5;
b = 3;
d = *p4;
My questions are:
- both p like *p need a Name Memory T
