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-rw-r--r--src/glsl/ir_if_return.cpp39
1 files changed, 20 insertions, 19 deletions
diff --git a/src/glsl/ir_if_return.cpp b/src/glsl/ir_if_return.cpp
index 293f7aa628..5ab8759958 100644
--- a/src/glsl/ir_if_return.cpp
+++ b/src/glsl/ir_if_return.cpp
@@ -44,10 +44,10 @@ public:
}
ir_visitor_status visit_enter(ir_function_signature *);
- ir_visitor_status visit_enter(ir_if *);
+ ir_visitor_status visit_leave(ir_if *);
- void move_outer_block_inside(ir_instruction *ir,
- exec_list *inner_block);
+ ir_visitor_status move_outer_block_inside(ir_instruction *ir,
+ exec_list *inner_block);
void move_returns_after_block(ir_instruction *ir,
ir_return *then_return,
ir_return *else_return);
@@ -127,18 +127,25 @@ ir_if_return_visitor::move_returns_after_block(ir_instruction *ir,
this->progress = true;
}
-void
+ir_visitor_status
ir_if_return_visitor::move_outer_block_inside(ir_instruction *ir,
exec_list *inner_block)
{
- if (!ir->get_next()->is_tail_sentinel())
- this->progress = true;
+ if (!ir->get_next()->is_tail_sentinel()) {
+ while (!ir->get_next()->is_tail_sentinel()) {
+ ir_instruction *move_ir = (ir_instruction *)ir->get_next();
- while (!ir->get_next()->is_tail_sentinel()) {
- ir_instruction *move_ir = (ir_instruction *)ir->get_next();
+ move_ir->remove();
+ inner_block->push_tail(move_ir);
+ }
- move_ir->remove();
- inner_block->push_tail(move_ir);
+ /* If we move the instructions following ir inside the block, it
+ * will confuse the exec_list iteration in the parent that visited
+ * us. So stop the visit at this point.
+ */
+ return visit_stop;
+ } else {
+ return visit_continue;
}
}
@@ -199,7 +206,7 @@ ir_if_return_visitor::visit_enter(ir_function_signature *ir)
}
ir_visitor_status
-ir_if_return_visitor::visit_enter(ir_if *ir)
+ir_if_return_visitor::visit_leave(ir_if *ir)
{
ir_return *then_return;
ir_return *else_return;
@@ -231,15 +238,9 @@ ir_if_return_visitor::visit_enter(ir_if *ir)
* side, so we'll trigger the above case on the next pass.
*/
if (then_return) {
- move_outer_block_inside(ir, &ir->else_instructions);
+ return move_outer_block_inside(ir, &ir->else_instructions);
} else {
assert(else_return);
- move_outer_block_inside(ir, &ir->then_instructions);
+ return move_outer_block_inside(ir, &ir->then_instructions);
}
-
- /* If we move the instructions following ir inside the block, it
- * will confuse the exec_list iteration in the parent that visited
- * us. So stop the visit at this point.
- */
- return visit_stop;
}