On Wed, Feb 12, 2014 at 10:22 PM, Mohsin Khan <mohsin1510@xxxxxxxxx> wrote:
> Hi,
>
> I am developing plugins for the GCC-4.8.2. I am a newbie in plugins.
> I wrote a plugin and tried to count and see the Goto Statements using
> the gimple_stmt_iterator. I get gimple statements printed on my
> stdout, but I am not able to find the line which has goto statements.
Try using gimple_lineno()
> I only get other lines such as variable declaration and logic
> statements, but no goto statements.
> When I open the Gimple/SSA/CFG file seperately using the vim editor
> I find the goto statements are actually present.
> So, can anyone help me. How can I actually get the count of Goto
> statements or atleast access these goto statements using some
> iterator.
> I have used -fdump-tree-all, -fdump-tree-cfg as flags.
>
> Here is the pseudocode:
>
> struct register_pass_info pass_info = {
> &(pass_plugin.pass), /* Address of new pass,
> here, the 'struct
> opt_pass' field of
> 'gimple_opt_pass'
> defined above */
> "ssa", /* Name of the reference
> pass for hooking up
> the new pass. ??? */
> 0, /* Insert the pass at the
> specified instance
> number of the reference
> pass. Do it for
> every instance if it is 0. */
> PASS_POS_INSERT_AFTER /* how to insert the new
> pass: before,
> after, or replace. Here
> we are inserting
> a pass names 'plug' after
> the pass named
> 'pta' */
> };
>
>
> .............
>
> static unsigned int dead_code_elimination (void)
> {
>
> FOR_EACH_BB_FN (bb, cfun)
> {
> // gimple_dump_bb(stdout,bb,0,0);
> // printf("\nIn New BB");
>
> gsi2= gsi_after_labels (bb);
> print_gimple_stmt(stdout,gsi_stmt(gsi2),0,0);
> /*Iterating over each gimple statement in a basic block*/
> for (gsi = gsi_start_bb (bb); !gsi_end_p (gsi); gsi_next (&gsi))
> {
> g = gsi_stmt(gsi);
>
> print_gimple_stmt(stdout,g,0,0);
>
> if (gimple_code(g)==GIMPLE_GOTO)
> printf("\nFound GOTO stmt\n");
>
>
> print_gimple_stmt(stdout,gsi_stmt(gsi),0,0);
> // analyze_gimple_statement (gsi);
> }
> }
> }
