Displaying 7 results from an estimated 7 matches for "stmt2".
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2013 Mar 21
2
[LLVMdev] How to describe a pointer that points to All memory(include global memory, heap, stack)?
...global-pointer might point to.
Then I defined several special Virtual Memory Locations: ALL_MEMORY, GLOBAL_MEMORY, STACK_MEMORY, HEAP_MEMORY. ALL_MEMORY contains GLOBAL_MEMORY, STACK_MEMORY, HEAP_MEMORY.
e.g1:
extern int * q;
void f(int * p)
{
int a;
*p = 0; //STMT1
*q = a; //STMT2
}
For above case, both p and q pointed to ALL_MEMORY: p->ALL_MEMORY, q->ALL_MEMORY.
And each STMT has two BitVectors to describe MayDef, MayUse.
(I think the BitVector must be sparse, otherwise the alias-analysis module need too much memory to allocate for all BitVectors.)
For STMT1, the...
2013 Mar 21
0
[LLVMdev] How to describe a pointer that points to All memory(include global memory, heap, stack)?
...to anything is
a single bit flag.
We don't keep sparse bit vectors around just to have a single bit set in them.
>
> e.g1:
> extern int * q;
> void f(int * p)
> {
> int a;
> *p = 0; //STMT1
> *q = a; //STMT2
> }
> For above case, both p and q pointed to ALL_MEMORY: p->ALL_MEMORY, q->ALL_MEMORY.
> And each STMT has two BitVectors to describe MayDef, MayUse.
> (I think the BitVector must be sparse, otherwise the alias-analysis module need too much memory...
2013 Mar 21
2
[LLVMdev] How to describe a pointer that points to All memory(include global memory, heap, stack)?
...around just to have a
> single bit set in them.
>
>
> >
> > e.g1:
> > extern int * q;
> > void f(int * p)
> > {
> > int
> a;
> > *p
> = 0; //STMT1
> > *q
> = a; //STMT2
> > }
> > For above case,
> both p and q pointed to ALL_MEMORY: p->ALL_MEMORY,
> q->ALL_MEMORY.
> > And each STMT has
> two BitVectors to describe MayDef, MayUse.
> > (I think the
> BitVector must be sparse, otherwise the ali...
2013 Mar 22
0
[LLVMdev] How to describe a pointer that points to All memory(include global memory, heap, stack)?
....
>>
>>
>> >
>> > e.g1:
>> > extern int * q;
>> > void f(int * p)
>> > {
>> > int
>> a;
>> > *p
>> = 0; //STMT1
>> > *q
>> = a; //STMT2
>> > }
>> > For above case,
>> both p and q pointed to ALL_MEMORY: p->ALL_MEMORY,
>> q->ALL_MEMORY.
>> > And each STMT has
>> two BitVectors to describe MayDef, MayUse.
>> > (I think the
>> BitVector m...
2013 Mar 13
0
[LLVMdev] How to describe a pointer that points to All memory(include global memory, heap, stack)?
On 3/13/13 4:06 AM, Steven Su wrote:
> Hello, could any one point me following question.
Without any context, your question is difficult to answer. Are you
building a points-to analysis and wanting to know how an alias analysis
might encode the fact that a pointer could alias any other pointer?
-- John T.
>
> e.g:
> void foo(int * p)
> {
> *p = 0;
> }
>
2013 Mar 13
2
[LLVMdev] How to describe a pointer that points to All memory(include global memory, heap, stack)?
Hello, could any one point me following question.
e.g:
void foo(int * p)
{
*p = 0;
}
Here 'p' may point to all memory location.
Could you tell me how to represent the POINT TO set of 'p'?
Here is my solution:
Introduce a memory-class named: Global_Mem, then p pointed to global_mem.
And the MOD set of '*p=0' is
2012 Sep 17
3
Can anyone help why the errors are coming and rectify it?
Hi Everyone,
Can anyone help why the errors are coming and rectify it?
invalid.ids <- c(1,3,5)
if (length(invalid.ids)==0) {
cat("No Errors found")
}
else {