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/*
* 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;
}
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