visit_list_elements(this, &ir->body);
+ ralloc_free(this->acp);
+ ralloc_free(this->kills);
+
this->kills = orig_kills;
this->acp = orig_acp;
this->killed_all = orig_killed_all;
kill_entry *k;
if (lhs)
- k = new(mem_ctx) kill_entry(var, ir->write_mask);
+ k = new(this->kills) kill_entry(var, ir->write_mask);
else
- k = new(mem_ctx) kill_entry(var, ~0);
+ k = new(this->kills) kill_entry(var, ~0);
kill(k);
}
}
ir_visitor_status
-ir_copy_propagation_elements_visitor::visit_leave(ir_swizzle *ir)
+ir_copy_propagation_elements_visitor::visit_leave(ir_swizzle *)
{
/* Don't visit the values of swizzles since they are handled while
* visiting the swizzle itself.
int swizzle_chan[4];
ir_dereference_variable *deref_var;
ir_variable *source[4] = {NULL, NULL, NULL, NULL};
- int source_chan[4];
+ int source_chan[4] = {0, 0, 0, 0};
int chans;
+ bool noop_swizzle = true;
if (!*ir)
return;
/* Try to find ACP entries covering swizzle_chan[], hoping they're
* the same source variable.
*/
- foreach_list(n, this->acp) {
- acp_entry *entry = (acp_entry *) n;
-
+ foreach_in_list(acp_entry, entry, this->acp) {
if (var == entry->lhs) {
for (int c = 0; c < chans; c++) {
if (entry->write_mask & (1 << swizzle_chan[c])) {
source[c] = entry->rhs;
source_chan[c] = entry->swizzle[swizzle_chan[c]];
+
+ if (source_chan[c] != swizzle_chan[c])
+ noop_swizzle = false;
}
}
}
if (!shader_mem_ctx)
shader_mem_ctx = ralloc_parent(deref_var);
+ /* Don't pointlessly replace the rvalue with itself (or a noop swizzle
+ * of itself, which would just be deleted by opt_noop_swizzle).
+ */
+ if (source[0] == var && noop_swizzle)
+ return;
+
if (debug) {
printf("Copy propagation from:\n");
(*ir)->print();
source_chan[2],
source_chan[3],
chans);
+ progress = true;
if (debug) {
printf("to:\n");
ir_copy_propagation_elements_visitor::visit_enter(ir_call *ir)
{
/* Do copy propagation on call parameters, but skip any out params */
- exec_list_iterator sig_param_iter = ir->callee->parameters.iterator();
- foreach_iter(exec_list_iterator, iter, ir->actual_parameters) {
- ir_variable *sig_param = (ir_variable *)sig_param_iter.get();
- ir_instruction *ir = (ir_instruction *)iter.get();
+ foreach_two_lists(formal_node, &ir->callee->parameters,
+ actual_node, &ir->actual_parameters) {
+ ir_variable *sig_param = (ir_variable *) formal_node;
+ ir_rvalue *ir = (ir_rvalue *) actual_node;
if (sig_param->data.mode != ir_var_function_out
&& sig_param->data.mode != ir_var_function_inout) {
ir->accept(this);
}
- sig_param_iter.next();
}
/* Since we're unlinked, we don't (necessarily) know the side effects of
this->killed_all = false;
/* Populate the initial acp with a copy of the original */
- foreach_list(n, orig_acp) {
- acp_entry *a = (acp_entry *) n;
- this->acp->push_tail(new(this->mem_ctx) acp_entry(a));
+ foreach_in_list(acp_entry, a, orig_acp) {
+ this->acp->push_tail(new(this->acp) acp_entry(a));
}
visit_list_elements(this, instructions);
exec_list *new_kills = this->kills;
this->kills = orig_kills;
+ ralloc_free(this->acp);
this->acp = orig_acp;
this->killed_all = this->killed_all || orig_killed_all;
/* Move the new kills into the parent block's list, removing them
* from the parent's ACP list in the process.
*/
- foreach_list_safe(node, new_kills) {
- kill_entry *k = (kill_entry *)node;
+ foreach_in_list_safe(kill_entry, k, new_kills) {
kill(k);
}
+
+ ralloc_free(new_kills);
}
ir_visitor_status
exec_list *new_kills = this->kills;
this->kills = orig_kills;
+ ralloc_free(this->acp);
this->acp = orig_acp;
this->killed_all = this->killed_all || orig_killed_all;
- foreach_list_safe(node, new_kills) {
- kill_entry *k = (kill_entry *)node;
+ foreach_in_list_safe(kill_entry, k, new_kills) {
kill(k);
}
+ ralloc_free(new_kills);
+
/* already descended into the children. */
return visit_continue_with_parent;
}
void
ir_copy_propagation_elements_visitor::kill(kill_entry *k)
{
- foreach_list_safe(node, acp) {
- acp_entry *entry = (acp_entry *)node;
-
+ foreach_in_list_safe(acp_entry, entry, acp) {
if (entry->lhs == k->var) {
entry->write_mask = entry->write_mask & ~k->write_mask;
if (entry->write_mask == 0) {
if (k->next)
k->remove();
+ ralloc_steal(this->kills, k);
this->kills->push_tail(k);
}