| 0,0 → 1,88 |
|---|
| /* |
| * Copyright 2011 Tom Stellard <tstellar@gmail.com> |
| * |
| * 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_compiler.h" |
| #include "radeon_compiler_util.h" |
| #include "radeon_opcodes.h" |
| #include "radeon_program_pair.h" |
| |
| static void mark_used_presub(struct rc_pair_sub_instruction * sub) |
| { |
| if (sub->Src[RC_PAIR_PRESUB_SRC].Used) { |
| unsigned int presub_reg_count = rc_presubtract_src_reg_count( |
| sub->Src[RC_PAIR_PRESUB_SRC].Index); |
| unsigned int i; |
| for (i = 0; i < presub_reg_count; i++) { |
| sub->Src[i].Used = 1; |
| } |
| } |
| } |
| |
| static void mark_used( |
| struct rc_instruction * inst, |
| struct rc_pair_sub_instruction * sub) |
| { |
| unsigned int i; |
| const struct rc_opcode_info * info = rc_get_opcode_info(sub->Opcode); |
| for (i = 0; i < info->NumSrcRegs; i++) { |
| unsigned int src_type = rc_source_type_swz(sub->Arg[i].Swizzle); |
| if (src_type & RC_SOURCE_RGB) { |
| inst->U.P.RGB.Src[sub->Arg[i].Source].Used = 1; |
| } |
| |
| if (src_type & RC_SOURCE_ALPHA) { |
| inst->U.P.Alpha.Src[sub->Arg[i].Source].Used = 1; |
| } |
| } |
| } |
| |
| /** |
| * This pass finds sources that are not used by their instruction and marks |
| * them as unused. |
| */ |
| void rc_pair_remove_dead_sources(struct radeon_compiler * c, void *user) |
| { |
| struct rc_instruction * inst; |
| for (inst = c->Program.Instructions.Next; |
| inst != &c->Program.Instructions; |
| inst = inst->Next) { |
| unsigned int i; |
| if (inst->Type == RC_INSTRUCTION_NORMAL) |
| continue; |
| |
| /* Mark all sources as unused */ |
| for (i = 0; i < 4; i++) { |
| inst->U.P.RGB.Src[i].Used = 0; |
| inst->U.P.Alpha.Src[i].Used = 0; |
| } |
| mark_used(inst, &inst->U.P.RGB); |
| mark_used(inst, &inst->U.P.Alpha); |
| |
| mark_used_presub(&inst->U.P.RGB); |
| mark_used_presub(&inst->U.P.Alpha); |
| } |
| } |