diff options
Diffstat (limited to 'mesalib/src/glsl/opt_dead_functions.cpp')
| -rw-r--r-- | mesalib/src/glsl/opt_dead_functions.cpp | 223 |
1 files changed, 117 insertions, 106 deletions
diff --git a/mesalib/src/glsl/opt_dead_functions.cpp b/mesalib/src/glsl/opt_dead_functions.cpp index 6d41af5c5..3c3eb8904 100644 --- a/mesalib/src/glsl/opt_dead_functions.cpp +++ b/mesalib/src/glsl/opt_dead_functions.cpp @@ -1,109 +1,120 @@ - /*
- * Copyright © 2010 Intel Corporation
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice (including the next
- * paragraph) shall be included in all copies or substantial portions of the
- * Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
- * DEALINGS IN THE SOFTWARE.
- */
-
- /**
- * \file opt_dead_functions.cpp
- *
- * Eliminates unused functions from the linked program.
- */
-
- #include "ir.h"
- #include "ir_visitor.h"
- #include "ir_expression_flattening.h"
- #include "glsl_types.h"
-
- class signature_entry : public exec_node
- {
- public:
- signature_entry(ir_function_signature *sig)
- {
- this->signature = sig;
- this->used = false;
- }
-
- ir_function_signature *signature;
- bool used;
- };
-
- class ir_dead_functions_visitor : public ir_hierarchical_visitor {
- public:
- ir_dead_functions_visitor()
- {
- this->mem_ctx = ralloc_context(NULL);
- }
-
- ~ir_dead_functions_visitor()
- {
- ralloc_free(this->mem_ctx);
- }
-
- virtual ir_visitor_status visit_enter(ir_function_signature *);
- virtual ir_visitor_status visit_enter(ir_call *);
-
- signature_entry *get_signature_entry(ir_function_signature *var);
-
- bool (*predicate)(ir_instruction *ir);
-
- /* List of signature_entry */
- exec_list signature_list;
- void *mem_ctx;
- };
-
-
- signature_entry *
- ir_dead_functions_visitor::get_signature_entry(ir_function_signature *sig)
- {
- foreach_iter(exec_list_iterator, iter, this->signature_list) {
- signature_entry *entry = (signature_entry *)iter.get();
- if (entry->signature == sig)
- return entry;
- }
-
- signature_entry *entry = new(mem_ctx) signature_entry(sig);
- this->signature_list.push_tail(entry);
- return entry;
- }
-
-
- ir_visitor_status
- ir_dead_functions_visitor::visit_enter(ir_function_signature *ir)
- {
- signature_entry *entry = this->get_signature_entry(ir);
-
- if (strcmp(ir->function_name(), "main") == 0) {
- entry->used = true;
- }
-
- return visit_continue;
- }
-
-
- ir_visitor_status
- ir_dead_functions_visitor::visit_enter(ir_call *ir)
- {
- signature_entry *entry = this->get_signature_entry(ir->get_callee());
-
- entry->used = true;
+/*
+ * Copyright © 2010 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+/**
+ * \file opt_dead_functions.cpp
+ *
+ * Eliminates unused functions from the linked program.
+ */
+
+#include "ir.h"
+#include "ir_visitor.h"
+#include "ir_expression_flattening.h"
+#include "glsl_types.h"
+
+class signature_entry : public exec_node
+{
+public:
+ signature_entry(ir_function_signature *sig)
+ {
+ this->signature = sig;
+ this->used = false;
+ }
+
+ ir_function_signature *signature;
+ bool used;
+};
+
+class ir_dead_functions_visitor : public ir_hierarchical_visitor {
+public:
+ ir_dead_functions_visitor()
+ {
+ this->mem_ctx = ralloc_context(NULL);
+ this->seen_another_function_signature = false;
+ }
+
+ ~ir_dead_functions_visitor()
+ {
+ ralloc_free(this->mem_ctx);
+ }
+
+ virtual ir_visitor_status visit_enter(ir_function_signature *);
+ virtual ir_visitor_status visit_enter(ir_call *);
+
+ signature_entry *get_signature_entry(ir_function_signature *var);
+
+ bool (*predicate)(ir_instruction *ir);
+
+ bool seen_another_function_signature;
+
+ /* List of signature_entry */
+ exec_list signature_list;
+ void *mem_ctx;
+};
+
+
+signature_entry *
+ir_dead_functions_visitor::get_signature_entry(ir_function_signature *sig)
+{
+ foreach_iter(exec_list_iterator, iter, this->signature_list) {
+ signature_entry *entry = (signature_entry *)iter.get();
+ if (entry->signature == sig)
+ return entry;
+ }
+
+ signature_entry *entry = new(mem_ctx) signature_entry(sig);
+ this->signature_list.push_tail(entry);
+ return entry;
+}
+
+
+ir_visitor_status
+ir_dead_functions_visitor::visit_enter(ir_function_signature *ir)
+{
+ signature_entry *entry = this->get_signature_entry(ir);
+
+ if (strcmp(ir->function_name(), "main") == 0) {
+ 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;
+}
+
+
+ir_visitor_status
+ir_dead_functions_visitor::visit_enter(ir_call *ir)
+{
+ signature_entry *entry = this->get_signature_entry(ir->get_callee());
+
+ entry->used = true;
return visit_continue;
}
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