diff options
author | Nicolai Hähnle <nhaehnle@gmail.com> | 2009-10-11 14:18:11 +0200 |
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committer | Marek Olšák <maraeo@gmail.com> | 2010-04-19 00:34:02 +0200 |
commit | 4d7ed844313a4be64e9162369c935ce750cd9b06 (patch) | |
tree | f6529de79e3ccd5768c0a20849f4fec7b4edd694 /src/mesa/drivers | |
parent | eeabe9d1797765056dcf0ca70ad5fc11b3aa758d (diff) | |
download | external_mesa3d-4d7ed844313a4be64e9162369c935ce750cd9b06.zip external_mesa3d-4d7ed844313a4be64e9162369c935ce750cd9b06.tar.gz external_mesa3d-4d7ed844313a4be64e9162369c935ce750cd9b06.tar.bz2 |
r300/compiler: Implement branch emulation for R300 fragment programs
Signed-off-by: Nicolai Hähnle <nhaehnle@gmail.com>
Diffstat (limited to 'src/mesa/drivers')
8 files changed, 512 insertions, 104 deletions
diff --git a/src/mesa/drivers/dri/r300/compiler/Makefile b/src/mesa/drivers/dri/r300/compiler/Makefile index c8acd3a..e432afc 100644 --- a/src/mesa/drivers/dri/r300/compiler/Makefile +++ b/src/mesa/drivers/dri/r300/compiler/Makefile @@ -8,6 +8,7 @@ LIBNAME = r300compiler C_SOURCES = \ radeon_code.c \ radeon_compiler.c \ + radeon_emulate_branches.c \ radeon_program.c \ radeon_program_print.c \ radeon_opcodes.c \ diff --git a/src/mesa/drivers/dri/r300/compiler/memory_pool.h b/src/mesa/drivers/dri/r300/compiler/memory_pool.h index ce23c31..42344d0 100644 --- a/src/mesa/drivers/dri/r300/compiler/memory_pool.h +++ b/src/mesa/drivers/dri/r300/compiler/memory_pool.h @@ -46,4 +46,35 @@ void memory_pool_init(struct memory_pool * pool); void memory_pool_destroy(struct memory_pool * pool); void * memory_pool_malloc(struct memory_pool * pool, unsigned int bytes); + +/** + * Generic helper for growing an array that has separate size/count + * and reserved counters to accomodate up to num new element. + * + * type * Array; + * unsigned int Size; + * unsigned int Reserved; + * + * memory_pool_array_reserve(pool, type, Array, Size, Reserved, k); + * assert(Size + k < Reserved); + * + * \note Size is not changed by this macro. + * + * \warning Array, Size, Reserved have to be lvalues and may be evaluated + * several times. + */ +#define memory_pool_array_reserve(pool, type, array, size, reserved, num) do { \ + unsigned int _num = (num); \ + if ((size) + _num > (reserved)) { \ + unsigned int newreserve = (reserved) * 2; \ + type * newarray; \ + if (newreserve < _num) \ + newreserve = 4 * _num; /* arbitrary heuristic */ \ + newarray = memory_pool_malloc((pool), newreserve * sizeof(type)); \ + memcpy(newarray, (array), (size) * sizeof(type)); \ + (array) = newarray; \ + (reserved) = newreserve; \ + } \ +} while(0) + #endif /* MEMORY_POOL_H */ diff --git a/src/mesa/drivers/dri/r300/compiler/r3xx_fragprog.c b/src/mesa/drivers/dri/r300/compiler/r3xx_fragprog.c index 5fe10db..1e10534 100644 --- a/src/mesa/drivers/dri/r300/compiler/r3xx_fragprog.c +++ b/src/mesa/drivers/dri/r300/compiler/r3xx_fragprog.c @@ -25,6 +25,7 @@ #include <stdio.h> #include "radeon_dataflow.h" +#include "radeon_emulate_branches.h" #include "radeon_program_alu.h" #include "radeon_program_tex.h" #include "r300_fragprog.h" @@ -85,6 +86,14 @@ static void rewrite_depth_out(struct r300_fragment_program_compiler * c) } } +static void debug_program_log(struct r300_fragment_program_compiler* c, const char * where) +{ + if (c->Base.Debug) { + fprintf(stderr, "Fragment Program: %s\n", where); + rc_print_program(&c->Base.Program); + } +} + void r3xx_compile_fragment_program(struct r300_fragment_program_compiler* c) { rewrite_depth_out(c); @@ -106,6 +115,10 @@ void r3xx_compile_fragment_program(struct r300_fragment_program_compiler* c) }; radeonLocalTransform(&c->Base, 2, transformations); + debug_program_log(c, "before emulate branches"); + + rc_emulate_branches(&c->Base); + c->Base.SwizzleCaps = &r300_swizzle_caps; } @@ -119,62 +132,41 @@ void r3xx_compile_fragment_program(struct r300_fragment_program_compiler* c) common_transformations[0].function = &radeonTransformALU; radeonLocalTransform(&c->Base, 1, common_transformations); - if (c->Base.Debug) { - fprintf(stderr, "Fragment Program: After native rewrite:\n"); - rc_print_program(&c->Base.Program); - fflush(stderr); - } + if (c->Base.Error) + return; + + debug_program_log(c, "after native rewrite"); rc_dataflow_deadcode(&c->Base, &dataflow_outputs_mark_use, c); if (c->Base.Error) return; - if (c->Base.Debug) { - fprintf(stderr, "Fragment Program: After deadcode:\n"); - rc_print_program(&c->Base.Program); - fflush(stderr); - } + debug_program_log(c, "after deadcode"); rc_dataflow_swizzles(&c->Base); if (c->Base.Error) return; - if (c->Base.Debug) { - fprintf(stderr, "Compiler: after dataflow passes:\n"); - rc_print_program(&c->Base.Program); - fflush(stderr); - } + debug_program_log(c, "after dataflow passes"); rc_pair_translate(c); if (c->Base.Error) return; - if (c->Base.Debug) { - fprintf(stderr, "Compiler: after pair translate:\n"); - rc_print_program(&c->Base.Program); - fflush(stderr); - } + debug_program_log(c, "after pair translate"); rc_pair_schedule(c); if (c->Base.Error) return; - if (c->Base.Debug) { - fprintf(stderr, "Compiler: after pair scheduling:\n"); - rc_print_program(&c->Base.Program); - fflush(stderr); - } + debug_program_log(c, "after pair scheduling"); rc_pair_regalloc(c, c->max_temp_regs); if (c->Base.Error) return; - if (c->Base.Debug) { - fprintf(stderr, "Compiler: after pair register allocation:\n"); - rc_print_program(&c->Base.Program); - fflush(stderr); - } + debug_program_log(c, "after register allocation"); if (c->is_r500) { r500BuildFragmentProgramHwCode(c); diff --git a/src/mesa/drivers/dri/r300/compiler/radeon_dataflow.c b/src/mesa/drivers/dri/r300/compiler/radeon_dataflow.c index cce9166..16e2f3a 100644 --- a/src/mesa/drivers/dri/r300/compiler/radeon_dataflow.c +++ b/src/mesa/drivers/dri/r300/compiler/radeon_dataflow.c @@ -160,3 +160,92 @@ void rc_for_all_writes(struct rc_instruction * inst, rc_read_write_fn cb, void * writes_pair(inst, cb, userdata); } } + + +static void remap_normal_instruction(struct rc_instruction * fullinst, + rc_remap_register_fn cb, void * userdata) +{ + struct rc_sub_instruction * inst = &fullinst->U.I; + const struct rc_opcode_info * opcode = rc_get_opcode_info(inst->Opcode); + + if (opcode->HasDstReg) { + rc_register_file file = inst->DstReg.File; + unsigned int index = inst->DstReg.Index; + + cb(userdata, fullinst, &file, &index); + + inst->DstReg.File = file; + inst->DstReg.Index = index; + } + + for(unsigned int src = 0; src < opcode->NumSrcRegs; ++src) { + rc_register_file file = inst->SrcReg[src].File; + unsigned int index = inst->SrcReg[src].Index; + + cb(userdata, fullinst, &file, &index); + + inst->SrcReg[src].File = file; + inst->SrcReg[src].Index = index; + } +} + +static void remap_pair_instruction(struct rc_instruction * fullinst, + rc_remap_register_fn cb, void * userdata) +{ + struct rc_pair_instruction * inst = &fullinst->U.P; + + if (inst->RGB.WriteMask) { + rc_register_file file = RC_FILE_TEMPORARY; + unsigned int index = inst->RGB.DestIndex; + + cb(userdata, fullinst, &file, &index); + + inst->RGB.DestIndex = index; + } + + if (inst->Alpha.WriteMask) { + rc_register_file file = RC_FILE_TEMPORARY; + unsigned int index = inst->Alpha.DestIndex; + + cb(userdata, fullinst, &file, &index); + + inst->Alpha.DestIndex = index; + } + + for(unsigned int src = 0; src < 3; ++src) { + if (inst->RGB.Src[src].Used) { + rc_register_file file = inst->RGB.Src[src].File; + unsigned int index = inst->RGB.Src[src].Index; + + cb(userdata, fullinst, &file, &index); + + inst->RGB.Src[src].File = file; + inst->RGB.Src[src].Index = index; + } + + if (inst->Alpha.Src[src].Used) { + rc_register_file file = inst->Alpha.Src[src].File; + unsigned int index = inst->Alpha.Src[src].Index; + + cb(userdata, fullinst, &file, &index); + + inst->Alpha.Src[src].File = file; + inst->Alpha.Src[src].Index = index; + } + } +} + + +/** + * Remap all register accesses according to the given function. + * That is, call the function \p cb for each referenced register (both read and written) + * and update the given instruction \p inst accordingly + * if it modifies its \ref pfile and \ref pindex contents. + */ +void rc_remap_registers(struct rc_instruction * inst, rc_remap_register_fn cb, void * userdata) +{ + if (inst->Type == RC_INSTRUCTION_NORMAL) + remap_normal_instruction(inst, cb, userdata); + else + remap_pair_instruction(inst, cb, userdata); +} diff --git a/src/mesa/drivers/dri/r300/compiler/radeon_dataflow.h b/src/mesa/drivers/dri/r300/compiler/radeon_dataflow.h index 5aa4cb6..62cda20 100644 --- a/src/mesa/drivers/dri/r300/compiler/radeon_dataflow.h +++ b/src/mesa/drivers/dri/r300/compiler/radeon_dataflow.h @@ -36,13 +36,17 @@ struct rc_swizzle_caps; /** - * Help analyze the register accesses of instructions. + * Help analyze and modify the register accesses of instructions. */ /*@{*/ typedef void (*rc_read_write_fn)(void * userdata, struct rc_instruction * inst, rc_register_file file, unsigned int index, unsigned int chan); void rc_for_all_reads(struct rc_instruction * inst, rc_read_write_fn cb, void * userdata); void rc_for_all_writes(struct rc_instruction * inst, rc_read_write_fn cb, void * userdata); + +typedef void (*rc_remap_register_fn)(void * userdata, struct rc_instruction * inst, + rc_register_file * pfile, unsigned int * pindex); +void rc_remap_registers(struct rc_instruction * inst, rc_remap_register_fn cb, void * userdata); /*@}*/ diff --git a/src/mesa/drivers/dri/r300/compiler/radeon_emulate_branches.c b/src/mesa/drivers/dri/r300/compiler/radeon_emulate_branches.c new file mode 100644 index 0000000..d889612 --- /dev/null +++ b/src/mesa/drivers/dri/r300/compiler/radeon_emulate_branches.c @@ -0,0 +1,331 @@ +/* + * Copyright 2009 Nicolai Hähnle <nhaehnle@gmail.com> + * + * 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. */ + +#include "radeon_emulate_branches.h" + +#include <stdio.h> + +#include "radeon_compiler.h" +#include "radeon_dataflow.h" + +#define VERBOSE 0 + +#define DBG(...) do { if (VERBOSE) fprintf(stderr, __VA_ARGS__); } while(0) + + +struct proxy_info { + unsigned int Proxied:1; + unsigned int Index:RC_REGISTER_INDEX_BITS; +}; + +struct register_proxies { + struct proxy_info Temporary[RC_REGISTER_MAX_INDEX]; +}; + +struct branch_info { + struct rc_instruction * If; + struct rc_instruction * Else; +}; + +struct emulate_branch_state { + struct radeon_compiler * C; + + struct branch_info * Branches; + unsigned int BranchCount; + unsigned int BranchReserved; +}; + + +static void handle_if(struct emulate_branch_state * s, struct rc_instruction * inst) +{ + memory_pool_array_reserve(&s->C->Pool, struct branch_info, + s->Branches, s->BranchCount, s->BranchReserved, 1); + + DBG("%s\n", __FUNCTION__); + + struct branch_info * branch = &s->Branches[s->BranchCount++]; + memset(branch, 0, sizeof(struct branch_info)); + branch->If = inst; + + /* Make a safety copy of the decision register, because we will need + * it at ENDIF time and it might be overwritten in both branches. */ + struct rc_instruction * inst_mov = rc_insert_new_instruction(s->C, inst->Prev); + inst_mov->U.I.Opcode = RC_OPCODE_MOV; + inst_mov->U.I.DstReg.File = RC_FILE_TEMPORARY; + inst_mov->U.I.DstReg.Index = rc_find_free_temporary(s->C); + inst_mov->U.I.DstReg.WriteMask = RC_MASK_X; + inst_mov->U.I.SrcReg[0] = inst->U.I.SrcReg[0]; + + inst->U.I.SrcReg[0].File = RC_FILE_TEMPORARY; + inst->U.I.SrcReg[0].Index = inst_mov->U.I.DstReg.Index; + inst->U.I.SrcReg[0].Swizzle = 0; + inst->U.I.SrcReg[0].Abs = 0; + inst->U.I.SrcReg[0].Negate = 0; +} + +static void handle_else(struct emulate_branch_state * s, struct rc_instruction * inst) +{ + if (!s->BranchCount) { + rc_error(s->C, "Encountered ELSE outside of branches"); + return; + } + + DBG("%s\n", __FUNCTION__); + + struct branch_info * branch = &s->Branches[s->BranchCount - 1]; + branch->Else = inst; +} + + +struct state_and_proxies { + struct emulate_branch_state * S; + struct register_proxies * Proxies; +}; + +static struct proxy_info * get_proxy_info(struct state_and_proxies * sap, + rc_register_file file, unsigned int index) +{ + if (file == RC_FILE_TEMPORARY) { + return &sap->Proxies->Temporary[index]; + } else { + return 0; + } +} + +static void scan_write(void * userdata, struct rc_instruction * inst, + rc_register_file file, unsigned int index, unsigned int comp) +{ + struct state_and_proxies * sap = userdata; + struct proxy_info * proxy = get_proxy_info(sap, file, index); + + if (proxy && !proxy->Proxied) { + proxy->Proxied = 1; + proxy->Index = rc_find_free_temporary(sap->S->C); + } +} + +static void remap_proxy_function(void * userdata, struct rc_instruction * inst, + rc_register_file * pfile, unsigned int * pindex) +{ + struct state_and_proxies * sap = userdata; + struct proxy_info * proxy = get_proxy_info(sap, *pfile, *pindex); + + if (proxy && proxy->Proxied) { + *pfile = RC_FILE_TEMPORARY; + *pindex = proxy->Index; + } +} + +/** + * Redirect all writes in the instruction range [begin, end) to proxy + * temporary registers. + */ +static void allocate_and_insert_proxies(struct emulate_branch_state * s, + struct register_proxies * proxies, + struct rc_instruction * begin, + struct rc_instruction * end) +{ + struct state_and_proxies sap; + + sap.S = s; + sap.Proxies = proxies; + + for(struct rc_instruction * inst = begin; inst != end; inst = inst->Next) { + rc_for_all_writes(inst, scan_write, &sap); + rc_remap_registers(inst, remap_proxy_function, &sap); + } + + for(unsigned int index = 0; index < RC_REGISTER_MAX_INDEX; ++index) { + if (proxies->Temporary[index].Proxied) { + struct rc_instruction * inst_mov = rc_insert_new_instruction(s->C, begin->Prev); + inst_mov->U.I.Opcode = RC_OPCODE_MOV; + inst_mov->U.I.DstReg.File = RC_FILE_TEMPORARY; + inst_mov->U.I.DstReg.Index = proxies->Temporary[index].Index; + inst_mov->U.I.DstReg.WriteMask = RC_MASK_XYZW; + inst_mov->U.I.SrcReg[0].File = RC_FILE_TEMPORARY; + inst_mov->U.I.SrcReg[0].Index = index; + } + } +} + + +static void inject_cmp(struct emulate_branch_state * s, + struct rc_instruction * inst_if, + struct rc_instruction * inst_endif, + rc_register_file file, unsigned int index, + struct proxy_info ifproxy, + struct proxy_info elseproxy) +{ + struct rc_instruction * inst_cmp = rc_insert_new_instruction(s->C, inst_endif); + inst_cmp->U.I.Opcode = RC_OPCODE_CMP; + inst_cmp->U.I.DstReg.File = file; + inst_cmp->U.I.DstReg.Index = index; + inst_cmp->U.I.DstReg.WriteMask = RC_MASK_XYZW; + inst_cmp->U.I.SrcReg[0] = inst_if->U.I.SrcReg[0]; + inst_cmp->U.I.SrcReg[0].Abs = 1; + inst_cmp->U.I.SrcReg[0].Negate = RC_MASK_XYZW; + inst_cmp->U.I.SrcReg[1].File = RC_FILE_TEMPORARY; + inst_cmp->U.I.SrcReg[1].Index = ifproxy.Proxied ? ifproxy.Index : index; + inst_cmp->U.I.SrcReg[2].File = RC_FILE_TEMPORARY; + inst_cmp->U.I.SrcReg[2].Index = elseproxy.Proxied ? elseproxy.Index : index; +} + +static void handle_endif(struct emulate_branch_state * s, struct rc_instruction * inst) +{ + if (!s->BranchCount) { + rc_error(s->C, "Encountered ENDIF outside of branches"); + return; + } + + DBG("%s\n", __FUNCTION__); + + struct branch_info * branch = &s->Branches[s->BranchCount - 1]; + struct register_proxies IfProxies; + struct register_proxies ElseProxies; + + memset(&IfProxies, 0, sizeof(IfProxies)); + memset(&ElseProxies, 0, sizeof(ElseProxies)); + + allocate_and_insert_proxies(s, &IfProxies, branch->If->Next, branch->Else ? branch->Else : inst); + + if (branch->Else) + allocate_and_insert_proxies(s, &ElseProxies, branch->Else->Next, inst); + + /* Insert the CMP instructions at the end. */ + for(unsigned int index = 0; index < RC_REGISTER_MAX_INDEX; ++index) { + if (IfProxies.Temporary[index].Proxied || ElseProxies.Temporary[index].Proxied) { + inject_cmp(s, branch->If, inst, RC_FILE_TEMPORARY, index, + IfProxies.Temporary[index], ElseProxies.Temporary[index]); + } + } + + /* Remove all traces of the branch instructions */ + rc_remove_instruction(branch->If); + if (branch->Else) + rc_remove_instruction(branch->Else); + rc_remove_instruction(inst); + + s->BranchCount--; + + if (VERBOSE) { + DBG("Program after ENDIF handling:\n"); + rc_print_program(&s->C->Program); + } +} + + +struct remap_output_data { + unsigned int Output:RC_REGISTER_INDEX_BITS; + unsigned int Temporary:RC_REGISTER_INDEX_BITS; +}; + +static void remap_output_function(void * userdata, struct rc_instruction * inst, + rc_register_file * pfile, unsigned int * pindex) +{ + struct remap_output_data * data = userdata; + + if (*pfile == RC_FILE_OUTPUT && *pindex == data->Output) { + *pfile = RC_FILE_TEMPORARY; + *pindex = data->Temporary; + } +} + + +/** + * Output registers cannot be read from and so cannot be dealt with like + * temporary registers. + * + * We do the simplest thing: If an output registers is written within + * a branch, then *all* writes to this register are proxied to a + * temporary register, and a final MOV is appended to the end of + * the program. + */ +static void fix_output_writes(struct emulate_branch_state * s, struct rc_instruction * inst) +{ + if (!s->BranchCount) + return; + + const struct rc_opcode_info * opcode = rc_get_opcode_info(inst->U.I.Opcode); + + if (!opcode->HasDstReg) + return; + + if (inst->U.I.DstReg.File == RC_FILE_OUTPUT) { + struct remap_output_data remap; + + remap.Output = inst->U.I.DstReg.Index; + remap.Temporary = rc_find_free_temporary(s->C); + + for(struct rc_instruction * inst = s->C->Program.Instructions.Next; + inst != &s->C->Program.Instructions; + inst = inst->Next) { + rc_remap_registers(inst, &remap_output_function, &remap); + } + + struct rc_instruction * inst_mov = rc_insert_new_instruction(s->C, s->C->Program.Instructions.Prev); + inst_mov->U.I.Opcode = RC_OPCODE_MOV; + inst_mov->U.I.DstReg.File = RC_FILE_OUTPUT; + inst_mov->U.I.DstReg.Index = remap.Output; + inst_mov->U.I.DstReg.WriteMask = RC_MASK_XYZW; + inst_mov->U.I.SrcReg[0].File = RC_FILE_TEMPORARY; + inst_mov->U.I.SrcReg[0].Index = remap.Temporary; + } +} + +/** + * Remove branch instructions; instead, execute both branches + * on different register sets and choose between their results + * using CMP instructions in place of the original ENDIF. + */ +void rc_emulate_branches(struct radeon_compiler * c) +{ + struct emulate_branch_state s; + + memset(&s, 0, sizeof(s)); + s.C = c; + + /* Untypical loop because we may remove the current instruction */ + struct rc_instruction * ptr = c->Program.Instructions.Next; + while(ptr != &c->Program.Instructions) { + struct rc_instruction * inst = ptr; + ptr = ptr->Next; + + if (inst->Type == RC_INSTRUCTION_NORMAL) { + switch(inst->U.I.Opcode) { + case RC_OPCODE_IF: + handle_if(&s, inst); + break; + case RC_OPCODE_ELSE: + handle_else(&s, inst); + break; + case RC_OPCODE_ENDIF: + handle_endif(&s, inst); + break; + default: + fix_output_writes(&s, inst); + break; + } + } else { + rc_error(c, "%s: unhandled instruction type\n", __FUNCTION__); + } + } +} diff --git a/src/mesa/drivers/dri/r300/compiler/radeon_emulate_branches.h b/src/mesa/drivers/dri/r300/compiler/radeon_emulate_branches.h new file mode 100644 index 0000000..e07279f --- /dev/null +++ b/src/mesa/drivers/dri/r300/compiler/radeon_emulate_branches.h @@ -0,0 +1,30 @@ +/* + * Copyright 2009 Nicolai Hähnle <nhaehnle@gmail.com> + * + * 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. */ + +#ifndef RADEON_EMULATE_BRANCHES_H +#define RADEON_EMULATE_BRANCHES_H + +struct radeon_compiler; + +void rc_emulate_branches(struct radeon_compiler * c); + +#endif /* RADEON_EMULATE_BRANCHES_H */ diff --git a/src/mesa/drivers/dri/r300/compiler/radeon_pair_regalloc.c b/src/mesa/drivers/dri/r300/compiler/radeon_pair_regalloc.c index b2fe7f7..fdfee86 100644 --- a/src/mesa/drivers/dri/r300/compiler/radeon_pair_regalloc.c +++ b/src/mesa/drivers/dri/r300/compiler/radeon_pair_regalloc.c @@ -196,9 +196,10 @@ static void compute_live_intervals(struct regalloc_state * s) } } -static void rewrite_register(struct regalloc_state * s, +static void remap_register(void * data, struct rc_instruction * inst, rc_register_file * file, unsigned int * index) { + struct regalloc_state * s = data; const struct register_info * reg; if (*file == RC_FILE_TEMPORARY) @@ -214,74 +215,6 @@ static void rewrite_register(struct regalloc_state * s, } } -static void rewrite_normal_instruction(struct regalloc_state * s, struct rc_sub_instruction * inst) -{ - const struct rc_opcode_info * opcode = rc_get_opcode_info(inst->Opcode); - - if (opcode->HasDstReg) { - rc_register_file file = inst->DstReg.File; - unsigned int index = inst->DstReg.Index; - - rewrite_register(s, &file, &index); - - inst->DstReg.File = file; - inst->DstReg.Index = index; - } - - for(unsigned int src = 0; src < opcode->NumSrcRegs; ++src) { - rc_register_file file = inst->SrcReg[src].File; - unsigned int index = inst->SrcReg[src].Index; - - rewrite_register(s, &file, &index); - - inst->SrcReg[src].File = file; - inst->SrcReg[src].Index = index; - } -} - -static void rewrite_pair_instruction(struct regalloc_state * s, struct rc_pair_instruction * inst) -{ - if (inst->RGB.WriteMask) { - rc_register_file file = RC_FILE_TEMPORARY; - unsigned int index = inst->RGB.DestIndex; - - rewrite_register(s, &file, &index); - - inst->RGB.DestIndex = index; - } - - if (inst->Alpha.WriteMask) { - rc_register_file file = RC_FILE_TEMPORARY; - unsigned int index = inst->Alpha.DestIndex; - - rewrite_register(s, &file, &index); - - inst->Alpha.DestIndex = index; - } - - for(unsigned int src = 0; src < 3; ++src) { - if (inst->RGB.Src[src].Used) { - rc_register_file file = inst->RGB.Src[src].File; - unsigned int index = inst->RGB.Src[src].Index; - - rewrite_register(s, &file, &index); - - inst->RGB.Src[src].File = file; - inst->RGB.Src[src].Index = index; - } - - if (inst->Alpha.Src[src].Used) { - rc_register_file file = inst->Alpha.Src[src].File; - unsigned int index = inst->Alpha.Src[src].Index; - - rewrite_register(s, &file, &index); - - inst->Alpha.Src[src].File = file; - inst->Alpha.Src[src].Index = index; - } - } -} - static void do_regalloc(struct regalloc_state * s) { /* Simple and stupid greedy register allocation */ @@ -310,10 +243,7 @@ static void do_regalloc(struct regalloc_state * s) for(struct rc_instruction * inst = s->C->Program.Instructions.Next; inst != &s->C->Program.Instructions; inst = inst->Next) { - if (inst->Type == RC_INSTRUCTION_NORMAL) - rewrite_normal_instruction(s, &inst->U.I); - else - rewrite_pair_instruction(s, &inst->U.P); + rc_remap_registers(inst, &remap_register, s); } } |