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Re: Compute all gimple statements in which a var is used
- From: Richard Biener <richard dot guenther at gmail dot com>
- To: Cristina Georgiana Opriceana <cristina dot opriceana at gmail dot com>,gcc at gcc dot gnu dot org
- Date: Mon, 28 Mar 2016 21:55:12 +0200
- Subject: Re: Compute all gimple statements in which a var is used
- Authentication-results: sourceware.org; auth=none
- References: <CAFA9rWNCv-vM8zHH-hvKA+e+5od3nPh1V8wEM9smiTS5i3LKEQ at mail dot gmail dot com>
On March 28, 2016 7:23:26 PM GMT+02:00, Cristina Georgiana Opriceana <cristina.opriceana@gmail.com> wrote:
>Hello,
>
>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.
Richard.
>Thanks,
>Cristina