glsl2: Use the parser state as the talloc context for dead code elimination.
This cuts runtime by around 20% from talloc_parent() lookups.
diff --git a/src/glsl/ir_dead_code.cpp b/src/glsl/ir_dead_code.cpp
index 8821304..51fa96d 100644
--- a/src/glsl/ir_dead_code.cpp
+++ b/src/glsl/ir_dead_code.cpp
@@ -71,6 +71,8 @@
/* List of variable_entry */
exec_list variable_list;
+
+ void *mem_ctx;
};
@@ -84,9 +86,7 @@
return entry;
}
- void *ctx = talloc_parent(var);
-
- variable_entry *entry = new(ctx) variable_entry(var);
+ variable_entry *entry = new(mem_ctx) variable_entry(var);
this->variable_list.push_tail(entry);
return entry;
}
@@ -147,11 +147,13 @@
* for usage on an unlinked instruction stream.
*/
bool
-do_dead_code(exec_list *instructions)
+do_dead_code(struct _mesa_glsl_parse_state *state,
+ exec_list *instructions)
{
ir_dead_code_visitor v;
bool progress = false;
+ v.mem_ctx = state;
v.run(instructions);
foreach_iter(exec_list_iterator, iter, v.variable_list) {
@@ -198,7 +200,8 @@
* with global scope.
*/
bool
-do_dead_code_unlinked(exec_list *instructions)
+do_dead_code_unlinked(struct _mesa_glsl_parse_state *state,
+ exec_list *instructions)
{
bool progress = false;
@@ -209,7 +212,7 @@
foreach_iter(exec_list_iterator, sigiter, *f) {
ir_function_signature *sig =
(ir_function_signature *) sigiter.get();
- if (do_dead_code(&sig->body))
+ if (do_dead_code(state, &sig->body))
progress = true;
}
}