1 files changed, 106 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/r300/compiler/radeon_dataflow.c b/src/mesa/drivers/dri/r300/compiler/radeon_dataflow.c
new file mode 100644
index 00000000000..af6777a7bd3
--- /dev/null
+++ b/src/mesa/drivers/dri/r300/compiler/radeon_dataflow.c
@@ -0,0 +1,106 @@
+/*
+ * Copyright (C) 2009 Nicolai Haehnle.
+ *
+ * All Rights Reserved.
+ *
+ * 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 COPYRIGHT OWNER(S) AND/OR ITS 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.
+ *
+ */
+
+#include "radeon_dataflow.h"
+
+#include "radeon_compiler.h"
+
+
+static void add_ref_to_vector(struct rc_dataflow_ref * ref, struct rc_dataflow_vector * vector)
+{
+	ref->Vector = vector;
+	ref->Prev = &vector->Refs;
+	ref->Next = vector->Refs.Next;
+	ref->Prev->Next = ref;
+	ref->Next->Prev = ref;
+}
+
+struct rc_dataflow_ref * rc_dataflow_create_ref(struct radeon_compiler * c,
+		struct rc_dataflow_vector * vector, struct rc_instruction * inst)
+{
+	struct rc_dataflow_ref * ref = memory_pool_malloc(&c->Pool, sizeof(struct rc_dataflow_ref));
+	ref->ReadInstruction = inst;
+	ref->UseMask = 0;
+
+	add_ref_to_vector(ref, vector);
+
+	return ref;
+}
+
+struct rc_dataflow_vector * rc_dataflow_create_vector(struct radeon_compiler * c,
+		rc_register_file file, unsigned int index, struct rc_instruction * inst)
+{
+	struct rc_dataflow_vector * vec = memory_pool_malloc(&c->Pool, sizeof(struct rc_dataflow_vector));
+
+	memset(vec, 0, sizeof(struct rc_dataflow_vector));
+	vec->File = file;
+	vec->Index = index;
+	vec->WriteInstruction = inst;
+
+	vec->Refs.Next = vec->Refs.Prev = &vec->Refs;
+
+	return vec;
+}
+
+void rc_dataflow_remove_ref(struct rc_dataflow_ref * ref)
+{
+	ref->Prev->Next = ref->Next;
+	ref->Next->Prev = ref->Prev;
+}
+
+void rc_dataflow_remove_instruction(struct rc_instruction * inst)
+{
+	for(unsigned int i = 0; i < 3; ++i) {
+		if (inst->Dataflow.SrcReg[i]) {
+			rc_dataflow_remove_ref(inst->Dataflow.SrcReg[i]);
+			inst->Dataflow.SrcReg[i] = 0;
+		}
+		if (inst->Dataflow.SrcRegAddress[i]) {
+			rc_dataflow_remove_ref(inst->Dataflow.SrcRegAddress[i]);
+			inst->Dataflow.SrcRegAddress[i] = 0;
+		}
+	}
+
+	if (inst->Dataflow.DstReg) {
+		while(inst->Dataflow.DstReg->Refs.Next != &inst->Dataflow.DstReg->Refs) {
+			struct rc_dataflow_ref * ref = inst->Dataflow.DstReg->Refs.Next;
+			rc_dataflow_remove_ref(ref);
+			if (inst->Dataflow.DstRegPrev)
+				add_ref_to_vector(ref, inst->Dataflow.DstRegPrev->Vector);
+		}
+
+		inst->Dataflow.DstReg->WriteInstruction = 0;
+		inst->Dataflow.DstReg = 0;
+	}
+
+	if (inst->Dataflow.DstRegPrev) {
+		rc_dataflow_remove_ref(inst->Dataflow.DstRegPrev);
+		inst->Dataflow.DstRegPrev = 0;
+	}
+
+	inst->Dataflow.DstRegAliased = 0;
+}