* Segfault inserting a pass
@ 2010-02-17 19:14 Saleel Kudchadker
2010-02-18 2:25 ` Richard Guenther
0 siblings, 1 reply; 2+ messages in thread
From: Saleel Kudchadker @ 2010-02-17 19:14 UTC (permalink / raw)
To: gcc-help, gcc
Hi I am working on calling the instrument function before every
function call automatically. I tried inserting this pass which would
add my function to every edge
//----------------------------------------
static unsigned int spmm_insert(void){
struct cgraph_edge *e;
struct cgraph_node *node = cgraph_node (current_function_decl);
tree x, bind,spmm_type,spmm_decl,ctr_ptr;
x = implicit_built_in_decls[BUILT_IN_PROFILE_FUNC_ENTER];
x = build_call_expr (x, 0);
for (e = node->callees; e; e = e->next_callee){
bsi_insert_on_edge(e, x);
}
/*******************************************************/
This throws me a Segfault error when compiling the code. i am applying
this pass before pass_apply_inline in passes.c
I am new to GCC, Can someone hint me documents or materials I can look
upon to insert this pass.
--
Regards,
Saleel Kudchadker
Graduate Student
School of Computing , Informatics and Decision Systems
Arizona State University
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: Segfault inserting a pass
2010-02-17 19:14 Segfault inserting a pass Saleel Kudchadker
@ 2010-02-18 2:25 ` Richard Guenther
0 siblings, 0 replies; 2+ messages in thread
From: Richard Guenther @ 2010-02-18 2:25 UTC (permalink / raw)
To: Saleel Kudchadker; +Cc: gcc-help, gcc
On Wed, Feb 17, 2010 at 8:00 PM, Saleel Kudchadker <skudchad@asu.edu> wrote:
> Hi I am working on calling the instrument function before every
> function call automatically. I tried inserting this pass which would
> add my function to every edge
>
> //----------------------------------------
>
> static unsigned int spmm_insert(void){
>
>
> struct cgraph_edge *e;
> struct cgraph_node *node = cgraph_node (current_function_decl);
>
> tree x, bind,spmm_type,spmm_decl,ctr_ptr;
> x = implicit_built_in_decls[BUILT_IN_PROFILE_FUNC_ENTER];
> x = build_call_expr (x, 0);
>
> for (e = node->callees; e; e = e->next_callee){
> bsi_insert_on_edge(e, x);
> }
e is a callgraph edge, not an edge in the CFG - that doesn't work and
warnings when compiling the code would have shown that to you.
Richard.
>
> /*******************************************************/
>
> This throws me a Segfault error when compiling the code. i am applying
> this pass before pass_apply_inline in passes.c
> I am new to GCC, Can someone hint me documents or materials I can look
> upon to insert this pass.
>
>
> --
> Regards,
>
> Saleel Kudchadker
> Graduate Student
> School of Computing , Informatics and Decision Systems
> Arizona State University
>
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