diff options
Diffstat (limited to 'src/mesa/drivers/dri/r300/compiler/radeon_dataflow.h')
| -rw-r--r-- | src/mesa/drivers/dri/r300/compiler/radeon_dataflow.h | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/r300/compiler/radeon_dataflow.h b/src/mesa/drivers/dri/r300/compiler/radeon_dataflow.h new file mode 100644 index 0000000000..c9856affe8 --- /dev/null +++ b/src/mesa/drivers/dri/r300/compiler/radeon_dataflow.h @@ -0,0 +1,113 @@ +/* + * 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. + * + */ + +#ifndef RADEON_DATAFLOW_H +#define RADEON_DATAFLOW_H + +#include "radeon_program_constants.h" + +struct radeon_compiler; +struct rc_instruction; +struct rc_swizzle_caps; + +struct rc_dataflow_vector; + +struct rc_dataflow_ref { + struct rc_dataflow_vector * Vector; + + /** + * Linked list of references to the above-mentioned vector. + * The linked list is \em not sorted. + */ + /*@{*/ + struct rc_dataflow_ref * Prev; + struct rc_dataflow_ref * Next; + /*@}*/ + + unsigned int UseMask:4; + struct rc_instruction * ReadInstruction; +}; + +struct rc_dataflow_vector { + rc_register_file File:3; + unsigned int Index:RC_REGISTER_INDEX_BITS; + + /** For private use in compiler passes. MUST BE RESET TO 0 by the end of each pass. + * The annotate pass uses this bit to track whether a vector is in the + * update stack. + */ + unsigned int PassBit:1; + /** Which of the components have been written with useful values */ + unsigned int ValidMask:4; + /** Which of the components are used downstream */ + unsigned int UseMask:4; + /** The instruction that produced this vector */ + struct rc_instruction * WriteInstruction; + + /** Linked list of references to this vector */ + struct rc_dataflow_ref Refs; +}; + +struct rc_instruction_dataflow { + struct rc_dataflow_ref * SrcReg[3]; + struct rc_dataflow_ref * SrcRegAddress[3]; + + /** Reference the components of the destination register + * that are carried over without being overwritten */ + struct rc_dataflow_ref * DstRegPrev; + /** Indicates whether the destination register was in use + * before this instruction */ + unsigned int DstRegAliased:1; + struct rc_dataflow_vector * DstReg; +}; + +/** + * General functions for manipulating the dataflow structures. + */ +/*@{*/ +struct rc_dataflow_ref * rc_dataflow_create_ref(struct radeon_compiler * c, + struct rc_dataflow_vector * vector, struct rc_instruction * inst); +struct rc_dataflow_vector * rc_dataflow_create_vector(struct radeon_compiler * c, + rc_register_file file, unsigned int index, struct rc_instruction * inst); +void rc_dataflow_remove_ref(struct rc_dataflow_ref * ref); + +void rc_dataflow_remove_instruction(struct rc_instruction * inst); +/*@}*/ + + +/** + * Compiler passes based on dataflow structures. + */ +/*@{*/ +typedef void (*rc_dataflow_mark_outputs_fn)(void * userdata, void * data, + void (*mark_fn)(void * data, unsigned int index, unsigned int mask)); +void rc_dataflow_annotate(struct radeon_compiler * c, rc_dataflow_mark_outputs_fn dce, void * userdata); +void rc_dataflow_dealias(struct radeon_compiler * c); +void rc_dataflow_swizzles(struct radeon_compiler * c); +/*@}*/ + +#endif /* RADEON_DATAFLOW_H */ |