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Re: Compute all gimple statements in which a var is used

On 04/05/2016 08:59 AM, Cristina Georgiana Opriceana wrote:
On Mon, Mar 28, 2016 at 10:55 PM, Richard Biener
<> wrote:
On March 28, 2016 7:23:26 PM GMT+02:00, Cristina Georgiana Opriceana <> wrote:

In order to compute all the statements where a variable is used, is it
enough to rely on the SSA analysis? I tried to do something like this:

FOR_EACH_LOCAL_DECL (cfun, i, var) {
        for (unsigned int i = 0; i < num_ssa_names; i++) {
            if (ssa_name(i) && SSA_NAME_VAR (ssa_name(i)) == var) {
                tree ssa_node = ssa_name(i);
                FOR_EACH_IMM_USE_FAST (use_op, imm_iter, ssa_node) {
                    gimple * use_stmt = USE_STMT(use_op);

No, you'll miss variables not in SSA form.

Could you give me more details on this or maybe some reading material?
As far as I understand, all the VAR_DECL, PARAM_DECL and RESULT_DECL
will be in SSA form.
Only non-addressable _DECL nodes will be in SSA form.

ie, arrays, or objects which have had their address taken will not be in SSA form.


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