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glsl: Skip processing the first function's body in do_dead_functions().

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It can't call anything, so there's no point.
This commit is contained in:
Eric Anholt 2011-03-11 14:08:48 -08:00
parent 11af045ea8
commit c75427f4c8
1 changed files with 10 additions and 1 deletions
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11
src/glsl/opt_dead_functions.cpp
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@ -50,6 +50,7 @@ public:
ir_dead_functions_visitor()
{
this->mem_ctx = ralloc_context(NULL);
this->seen_another_function_signature = false;
}
~ir_dead_functions_visitor()
@ -64,6 +65,8 @@ public:
bool (*predicate)(ir_instruction *ir);
bool seen_another_function_signature;
/* List of signature_entry */
exec_list signature_list;
void *mem_ctx;
@ -94,7 +97,13 @@ ir_dead_functions_visitor::visit_enter(ir_function_signature *ir)
entry->used = true;
}
/* If this is the first signature to look at, no need to descend to see
* if it has calls to another function signature.
*/
if (!this->seen_another_function_signature) {
this->seen_another_function_signature = true;
return visit_continue_with_parent;
}
return visit_continue;
}