1 files changed, 133 insertions, 0 deletions
diff --git a/src/gallium/drivers/r600/sb/sb_dce_cleanup.cpp b/src/gallium/drivers/r600/sb/sb_dce_cleanup.cpp
new file mode 100644
index 00000000000..acd6613166f
--- /dev/null
+++ b/src/gallium/drivers/r600/sb/sb_dce_cleanup.cpp
@@ -0,0 +1,133 @@
+/*
+ * Copyright 2013 Vadim Girlin <[email protected]>
+ *
+ * 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
+ * on the rights to use, copy, modify, merge, publish, distribute, sub
+ * license, 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 NON-INFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHOR(S) AND/OR THEIR SUPPLIERS 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.
+ *
+ * Authors:
+ *      Vadim Girlin
+ */
+
+#include "sb_shader.h"
+
+#include "sb_pass.h"
+
+namespace r600_sb {
+
+bool dce_cleanup::visit(node& n, bool enter) {
+	if (enter) {
+	} else {
+		if (n.flags & NF_DEAD)
+			n.remove();
+		else
+			cleanup_dst(n);
+	}
+	return true;
+}
+
+bool dce_cleanup::visit(alu_group_node& n, bool enter) {
+	if (enter) {
+	} else {
+		n.expand();
+	}
+	return true;
+}
+
+bool dce_cleanup::visit(cf_node& n, bool enter) {
+	if (enter) {
+		if (n.flags & NF_DEAD)
+			n.remove();
+		else
+			cleanup_dst(n);
+	} else {
+		if (n.bc.op_ptr->flags & (CF_CLAUSE | CF_BRANCH | CF_LOOP))
+			n.expand();
+	}
+	return true;
+}
+
+bool dce_cleanup::visit(alu_node& n, bool enter) {
+	if (enter) {
+	} else {
+		if (n.flags & NF_DEAD)
+			n.remove();
+		else
+			cleanup_dst(n);
+	}
+	return true;
+}
+
+bool dce_cleanup::visit(alu_packed_node& n, bool enter) {
+	if (enter) {
+	} else {
+		if (n.flags & NF_DEAD)
+			n.remove();
+		else
+			cleanup_dst(n);
+	}
+	return false;
+}
+
+bool dce_cleanup::visit(fetch_node& n, bool enter) {
+	if (enter) {
+	} else {
+		if (n.flags & NF_DEAD)
+			n.remove();
+		else
+			cleanup_dst(n);
+	}
+	return true;
+}
+
+bool dce_cleanup::visit(region_node& n, bool enter) {
+	if (enter) {
+		if (n.loop_phi)
+			run_on(*n.loop_phi);
+	} else {
+		if (n.phi)
+			run_on(*n.phi);
+	}
+	return true;
+}
+
+void dce_cleanup::cleanup_dst(node& n) {
+	cleanup_dst_vec(n.dst);
+}
+
+bool dce_cleanup::visit(container_node& n, bool enter) {
+	if (enter) {
+		cleanup_dst(n);
+	} else {
+
+	}
+	return true;
+}
+
+void dce_cleanup::cleanup_dst_vec(vvec& vv) {
+	for (vvec::iterator I = vv.begin(), E = vv.end(); I != E; ++I) {
+		value* &v = *I;
+		if (!v)
+			continue;
+
+		if (v->is_dead())
+			v = NULL;
+	}
+}
+
+} // namespace r600_sb