diff options
Diffstat (limited to 'src/mesa/drivers/dri/r300/compiler/radeon_optimize.c')
| -rw-r--r-- | src/mesa/drivers/dri/r300/compiler/radeon_optimize.c | 700 |
1 files changed, 0 insertions, 700 deletions
diff --git a/src/mesa/drivers/dri/r300/compiler/radeon_optimize.c b/src/mesa/drivers/dri/r300/compiler/radeon_optimize.c deleted file mode 100644 index 39dcb21d4f4..00000000000 --- a/src/mesa/drivers/dri/r300/compiler/radeon_optimize.c +++ /dev/null @@ -1,700 +0,0 @@ -/* - * Copyright (C) 2009 Nicolai Haehnle. - * Copyright 2010 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_dataflow.h" - -#include "radeon_compiler.h" -#include "radeon_compiler_util.h" -#include "radeon_swizzle.h" - -struct src_clobbered_reads_cb_data { - rc_register_file File; - unsigned int Index; - unsigned int Mask; - struct rc_reader_data * ReaderData; -}; - -typedef void (*rc_presub_replace_fn)(struct rc_instruction *, - struct rc_instruction *, - unsigned int); - -static struct rc_src_register chain_srcregs(struct rc_src_register outer, struct rc_src_register inner) -{ - struct rc_src_register combine; - combine.File = inner.File; - combine.Index = inner.Index; - combine.RelAddr = inner.RelAddr; - if (outer.Abs) { - combine.Abs = 1; - combine.Negate = outer.Negate; - } else { - combine.Abs = inner.Abs; - combine.Negate = swizzle_mask(outer.Swizzle, inner.Negate); - combine.Negate ^= outer.Negate; - } - combine.Swizzle = combine_swizzles(inner.Swizzle, outer.Swizzle); - return combine; -} - -static void copy_propagate_scan_read(void * data, struct rc_instruction * inst, - struct rc_src_register * src) -{ - rc_register_file file = src->File; - struct rc_reader_data * reader_data = data; - - if(!rc_inst_can_use_presub(inst, - reader_data->Writer->U.I.PreSub.Opcode, - rc_swizzle_to_writemask(src->Swizzle), - src, - &reader_data->Writer->U.I.PreSub.SrcReg[0], - &reader_data->Writer->U.I.PreSub.SrcReg[1])) { - reader_data->Abort = 1; - return; - } - - /* XXX This could probably be handled better. */ - if (file == RC_FILE_ADDRESS) { - reader_data->Abort = 1; - return; - } - - /* These instructions cannot read from the constants file. - * see radeonTransformTEX() - */ - if(reader_data->Writer->U.I.SrcReg[0].File != RC_FILE_TEMPORARY && - reader_data->Writer->U.I.SrcReg[0].File != RC_FILE_INPUT && - (inst->U.I.Opcode == RC_OPCODE_TEX || - inst->U.I.Opcode == RC_OPCODE_TXB || - inst->U.I.Opcode == RC_OPCODE_TXP || - inst->U.I.Opcode == RC_OPCODE_TXD || - inst->U.I.Opcode == RC_OPCODE_TXL || - inst->U.I.Opcode == RC_OPCODE_KIL)){ - reader_data->Abort = 1; - return; - } -} - -static void src_clobbered_reads_cb( - void * data, - struct rc_instruction * inst, - struct rc_src_register * src) -{ - struct src_clobbered_reads_cb_data * sc_data = data; - - if (src->File == sc_data->File - && src->Index == sc_data->Index - && (rc_swizzle_to_writemask(src->Swizzle) & sc_data->Mask)) { - - sc_data->ReaderData->AbortOnRead = RC_MASK_XYZW; - } - - if (src->RelAddr && sc_data->File == RC_FILE_ADDRESS) { - sc_data->ReaderData->AbortOnRead = RC_MASK_XYZW; - } -} - -static void is_src_clobbered_scan_write( - void * data, - struct rc_instruction * inst, - rc_register_file file, - unsigned int index, - unsigned int mask) -{ - struct src_clobbered_reads_cb_data sc_data; - struct rc_reader_data * reader_data = data; - sc_data.File = file; - sc_data.Index = index; - sc_data.Mask = mask; - sc_data.ReaderData = reader_data; - rc_for_all_reads_src(reader_data->Writer, - src_clobbered_reads_cb, &sc_data); -} - -static void copy_propagate(struct radeon_compiler * c, struct rc_instruction * inst_mov) -{ - struct rc_reader_data reader_data; - unsigned int i; - - if (inst_mov->U.I.DstReg.File != RC_FILE_TEMPORARY || - inst_mov->U.I.WriteALUResult || - inst_mov->U.I.SaturateMode) - return; - - /* Get a list of all the readers of this MOV instruction. */ - reader_data.ExitOnAbort = 1; - rc_get_readers(c, inst_mov, &reader_data, - copy_propagate_scan_read, NULL, - is_src_clobbered_scan_write); - - if (reader_data.Abort || reader_data.ReaderCount == 0) - return; - - /* Propagate the MOV instruction. */ - for (i = 0; i < reader_data.ReaderCount; i++) { - struct rc_instruction * inst = reader_data.Readers[i].Inst; - *reader_data.Readers[i].U.I.Src = chain_srcregs(*reader_data.Readers[i].U.I.Src, inst_mov->U.I.SrcReg[0]); - - if (inst_mov->U.I.SrcReg[0].File == RC_FILE_PRESUB) - inst->U.I.PreSub = inst_mov->U.I.PreSub; - } - - /* Finally, remove the original MOV instruction */ - rc_remove_instruction(inst_mov); -} - -/** - * Check if a source register is actually always the same - * swizzle constant. - */ -static int is_src_uniform_constant(struct rc_src_register src, - rc_swizzle * pswz, unsigned int * pnegate) -{ - int have_used = 0; - - if (src.File != RC_FILE_NONE) { - *pswz = 0; - return 0; - } - - for(unsigned int chan = 0; chan < 4; ++chan) { - unsigned int swz = GET_SWZ(src.Swizzle, chan); - if (swz < 4) { - *pswz = 0; - return 0; - } - if (swz == RC_SWIZZLE_UNUSED) - continue; - - if (!have_used) { - *pswz = swz; - *pnegate = GET_BIT(src.Negate, chan); - have_used = 1; - } else { - if (swz != *pswz || *pnegate != GET_BIT(src.Negate, chan)) { - *pswz = 0; - return 0; - } - } - } - - return 1; -} - -static void constant_folding_mad(struct rc_instruction * inst) -{ - rc_swizzle swz = 0; - unsigned int negate= 0; - - if (is_src_uniform_constant(inst->U.I.SrcReg[2], &swz, &negate)) { - if (swz == RC_SWIZZLE_ZERO) { - inst->U.I.Opcode = RC_OPCODE_MUL; - return; - } - } - - if (is_src_uniform_constant(inst->U.I.SrcReg[1], &swz, &negate)) { - if (swz == RC_SWIZZLE_ONE) { - inst->U.I.Opcode = RC_OPCODE_ADD; - if (negate) - inst->U.I.SrcReg[0].Negate ^= RC_MASK_XYZW; - inst->U.I.SrcReg[1] = inst->U.I.SrcReg[2]; - return; - } else if (swz == RC_SWIZZLE_ZERO) { - inst->U.I.Opcode = RC_OPCODE_MOV; - inst->U.I.SrcReg[0] = inst->U.I.SrcReg[2]; - return; - } - } - - if (is_src_uniform_constant(inst->U.I.SrcReg[0], &swz, &negate)) { - if (swz == RC_SWIZZLE_ONE) { - inst->U.I.Opcode = RC_OPCODE_ADD; - if (negate) - inst->U.I.SrcReg[1].Negate ^= RC_MASK_XYZW; - inst->U.I.SrcReg[0] = inst->U.I.SrcReg[2]; - return; - } else if (swz == RC_SWIZZLE_ZERO) { - inst->U.I.Opcode = RC_OPCODE_MOV; - inst->U.I.SrcReg[0] = inst->U.I.SrcReg[2]; - return; - } - } -} - -static void constant_folding_mul(struct rc_instruction * inst) -{ - rc_swizzle swz = 0; - unsigned int negate = 0; - - if (is_src_uniform_constant(inst->U.I.SrcReg[0], &swz, &negate)) { - if (swz == RC_SWIZZLE_ONE) { - inst->U.I.Opcode = RC_OPCODE_MOV; - inst->U.I.SrcReg[0] = inst->U.I.SrcReg[1]; - if (negate) - inst->U.I.SrcReg[0].Negate ^= RC_MASK_XYZW; - return; - } else if (swz == RC_SWIZZLE_ZERO) { - inst->U.I.Opcode = RC_OPCODE_MOV; - inst->U.I.SrcReg[0].Swizzle = RC_SWIZZLE_0000; - return; - } - } - - if (is_src_uniform_constant(inst->U.I.SrcReg[1], &swz, &negate)) { - if (swz == RC_SWIZZLE_ONE) { - inst->U.I.Opcode = RC_OPCODE_MOV; - if (negate) - inst->U.I.SrcReg[0].Negate ^= RC_MASK_XYZW; - return; - } else if (swz == RC_SWIZZLE_ZERO) { - inst->U.I.Opcode = RC_OPCODE_MOV; - inst->U.I.SrcReg[0].Swizzle = RC_SWIZZLE_0000; - return; - } - } -} - -static void constant_folding_add(struct rc_instruction * inst) -{ - rc_swizzle swz = 0; - unsigned int negate = 0; - - if (is_src_uniform_constant(inst->U.I.SrcReg[0], &swz, &negate)) { - if (swz == RC_SWIZZLE_ZERO) { - inst->U.I.Opcode = RC_OPCODE_MOV; - inst->U.I.SrcReg[0] = inst->U.I.SrcReg[1]; - return; - } - } - - if (is_src_uniform_constant(inst->U.I.SrcReg[1], &swz, &negate)) { - if (swz == RC_SWIZZLE_ZERO) { - inst->U.I.Opcode = RC_OPCODE_MOV; - return; - } - } -} - -/** - * Replace 0.0, 1.0 and 0.5 immediate constants by their - * respective swizzles. Simplify instructions like ADD dst, src, 0; - */ -static void constant_folding(struct radeon_compiler * c, struct rc_instruction * inst) -{ - const struct rc_opcode_info * opcode = rc_get_opcode_info(inst->U.I.Opcode); - unsigned int i; - - /* Replace 0.0, 1.0 and 0.5 immediates by their explicit swizzles */ - for(unsigned int src = 0; src < opcode->NumSrcRegs; ++src) { - struct rc_constant * constant; - struct rc_src_register newsrc; - int have_real_reference; - unsigned int chan; - - /* If there are only 0, 0.5, 1, or _ swizzles, mark the source as a constant. */ - for (chan = 0; chan < 4; ++chan) - if (GET_SWZ(inst->U.I.SrcReg[src].Swizzle, chan) <= 3) - break; - if (chan == 4) { - inst->U.I.SrcReg[src].File = RC_FILE_NONE; - continue; - } - - /* Convert immediates to swizzles. */ - if (inst->U.I.SrcReg[src].File != RC_FILE_CONSTANT || - inst->U.I.SrcReg[src].RelAddr || - inst->U.I.SrcReg[src].Index >= c->Program.Constants.Count) - continue; - - constant = - &c->Program.Constants.Constants[inst->U.I.SrcReg[src].Index]; - - if (constant->Type != RC_CONSTANT_IMMEDIATE) - continue; - - newsrc = inst->U.I.SrcReg[src]; - have_real_reference = 0; - for (chan = 0; chan < 4; ++chan) { - unsigned int swz = GET_SWZ(newsrc.Swizzle, chan); - unsigned int newswz; - float imm; - float baseimm; - - if (swz >= 4) - continue; - - imm = constant->u.Immediate[swz]; - baseimm = imm; - if (imm < 0.0) - baseimm = -baseimm; - - if (baseimm == 0.0) { - newswz = RC_SWIZZLE_ZERO; - } else if (baseimm == 1.0) { - newswz = RC_SWIZZLE_ONE; - } else if (baseimm == 0.5 && c->has_half_swizzles) { - newswz = RC_SWIZZLE_HALF; - } else { - have_real_reference = 1; - continue; - } - - SET_SWZ(newsrc.Swizzle, chan, newswz); - if (imm < 0.0 && !newsrc.Abs) - newsrc.Negate ^= 1 << chan; - } - - if (!have_real_reference) { - newsrc.File = RC_FILE_NONE; - newsrc.Index = 0; - } - - /* don't make the swizzle worse */ - if (!c->SwizzleCaps->IsNative(inst->U.I.Opcode, newsrc) && - c->SwizzleCaps->IsNative(inst->U.I.Opcode, inst->U.I.SrcReg[src])) - continue; - - inst->U.I.SrcReg[src] = newsrc; - } - - /* Simplify instructions based on constants */ - if (inst->U.I.Opcode == RC_OPCODE_MAD) - constant_folding_mad(inst); - - /* note: MAD can simplify to MUL or ADD */ - if (inst->U.I.Opcode == RC_OPCODE_MUL) - constant_folding_mul(inst); - else if (inst->U.I.Opcode == RC_OPCODE_ADD) - constant_folding_add(inst); - - /* In case this instruction has been converted, make sure all of the - * registers that are no longer used are empty. */ - opcode = rc_get_opcode_info(inst->U.I.Opcode); - for(i = opcode->NumSrcRegs; i < 3; i++) { - memset(&inst->U.I.SrcReg[i], 0, sizeof(struct rc_src_register)); - } -} - -/** - * If src and dst use the same register, this function returns a writemask that - * indicates wich components are read by src. Otherwise zero is returned. - */ -static unsigned int src_reads_dst_mask(struct rc_src_register src, - struct rc_dst_register dst) -{ - if (dst.File != src.File || dst.Index != src.Index) { - return 0; - } - return rc_swizzle_to_writemask(src.Swizzle); -} - -/* Return 1 if the source registers has a constant swizzle (e.g. 0, 0.5, 1.0) - * in any of its channels. Return 0 otherwise. */ -static int src_has_const_swz(struct rc_src_register src) { - int chan; - for(chan = 0; chan < 4; chan++) { - unsigned int swz = GET_SWZ(src.Swizzle, chan); - if (swz == RC_SWIZZLE_ZERO || swz == RC_SWIZZLE_HALF - || swz == RC_SWIZZLE_ONE) { - return 1; - } - } - return 0; -} - -static void presub_scan_read( - void * data, - struct rc_instruction * inst, - struct rc_src_register * src) -{ - struct rc_reader_data * reader_data = data; - rc_presubtract_op * presub_opcode = reader_data->CbData; - - if (!rc_inst_can_use_presub(inst, *presub_opcode, - reader_data->Writer->U.I.DstReg.WriteMask, - src, - &reader_data->Writer->U.I.SrcReg[0], - &reader_data->Writer->U.I.SrcReg[1])) { - reader_data->Abort = 1; - return; - } -} - -static int presub_helper( - struct radeon_compiler * c, - struct rc_instruction * inst_add, - rc_presubtract_op presub_opcode, - rc_presub_replace_fn presub_replace) -{ - struct rc_reader_data reader_data; - unsigned int i; - rc_presubtract_op cb_op = presub_opcode; - - reader_data.CbData = &cb_op; - reader_data.ExitOnAbort = 1; - rc_get_readers(c, inst_add, &reader_data, presub_scan_read, NULL, - is_src_clobbered_scan_write); - - if (reader_data.Abort || reader_data.ReaderCount == 0) - return 0; - - for(i = 0; i < reader_data.ReaderCount; i++) { - unsigned int src_index; - struct rc_reader reader = reader_data.Readers[i]; - const struct rc_opcode_info * info = - rc_get_opcode_info(reader.Inst->U.I.Opcode); - - for (src_index = 0; src_index < info->NumSrcRegs; src_index++) { - if (&reader.Inst->U.I.SrcReg[src_index] == reader.U.I.Src) - presub_replace(inst_add, reader.Inst, src_index); - } - } - return 1; -} - -/* This function assumes that inst_add->U.I.SrcReg[0] and - * inst_add->U.I.SrcReg[1] aren't both negative. */ -static void presub_replace_add( - struct rc_instruction * inst_add, - struct rc_instruction * inst_reader, - unsigned int src_index) -{ - rc_presubtract_op presub_opcode; - if (inst_add->U.I.SrcReg[1].Negate || inst_add->U.I.SrcReg[0].Negate) - presub_opcode = RC_PRESUB_SUB; - else - presub_opcode = RC_PRESUB_ADD; - - if (inst_add->U.I.SrcReg[1].Negate) { - inst_reader->U.I.PreSub.SrcReg[0] = inst_add->U.I.SrcReg[1]; - inst_reader->U.I.PreSub.SrcReg[1] = inst_add->U.I.SrcReg[0]; - } else { - inst_reader->U.I.PreSub.SrcReg[0] = inst_add->U.I.SrcReg[0]; - inst_reader->U.I.PreSub.SrcReg[1] = inst_add->U.I.SrcReg[1]; - } - inst_reader->U.I.PreSub.SrcReg[0].Negate = 0; - inst_reader->U.I.PreSub.SrcReg[1].Negate = 0; - inst_reader->U.I.PreSub.Opcode = presub_opcode; - inst_reader->U.I.SrcReg[src_index] = - chain_srcregs(inst_reader->U.I.SrcReg[src_index], - inst_reader->U.I.PreSub.SrcReg[0]); - inst_reader->U.I.SrcReg[src_index].File = RC_FILE_PRESUB; - inst_reader->U.I.SrcReg[src_index].Index = presub_opcode; -} - -static int is_presub_candidate( - struct radeon_compiler * c, - struct rc_instruction * inst) -{ - const struct rc_opcode_info * info = rc_get_opcode_info(inst->U.I.Opcode); - unsigned int i; - unsigned int is_constant[2] = {0, 0}; - - assert(inst->U.I.Opcode == RC_OPCODE_ADD); - - if (inst->U.I.PreSub.Opcode != RC_PRESUB_NONE - || inst->U.I.SaturateMode - || inst->U.I.WriteALUResult) { - return 0; - } - - /* If both sources use a constant swizzle, then we can't convert it to - * a presubtract operation. In fact for the ADD and SUB presubtract - * operations neither source can contain a constant swizzle. This - * specific case is checked in peephole_add_presub_add() when - * we make sure the swizzles for both sources are equal, so we - * don't need to worry about it here. */ - for (i = 0; i < 2; i++) { - int chan; - for (chan = 0; chan < 4; chan++) { - rc_swizzle swz = - get_swz(inst->U.I.SrcReg[i].Swizzle, chan); - if (swz == RC_SWIZZLE_ONE - || swz == RC_SWIZZLE_ZERO - || swz == RC_SWIZZLE_HALF) { - is_constant[i] = 1; - } - } - } - if (is_constant[0] && is_constant[1]) - return 0; - - for(i = 0; i < info->NumSrcRegs; i++) { - struct rc_src_register src = inst->U.I.SrcReg[i]; - if (src_reads_dst_mask(src, inst->U.I.DstReg)) - return 0; - - src.File = RC_FILE_PRESUB; - if (!c->SwizzleCaps->IsNative(inst->U.I.Opcode, src)) - return 0; - } - return 1; -} - -static int peephole_add_presub_add( - struct radeon_compiler * c, - struct rc_instruction * inst_add) -{ - unsigned dstmask = inst_add->U.I.DstReg.WriteMask; - unsigned src0_neg = inst_add->U.I.SrcReg[0].Negate & dstmask; - unsigned src1_neg = inst_add->U.I.SrcReg[1].Negate & dstmask; - - if (inst_add->U.I.SrcReg[0].Swizzle != inst_add->U.I.SrcReg[1].Swizzle) - return 0; - - /* src0 and src1 can't have absolute values */ - if (inst_add->U.I.SrcReg[0].Abs || inst_add->U.I.SrcReg[1].Abs) - return 0; - - /* presub_replace_add() assumes only one is negative */ - if (inst_add->U.I.SrcReg[0].Negate && inst_add->U.I.SrcReg[1].Negate) - return 0; - - /* if src0 is negative, at least all bits of dstmask have to be set */ - if (inst_add->U.I.SrcReg[0].Negate && src0_neg != dstmask) - return 0; - - /* if src1 is negative, at least all bits of dstmask have to be set */ - if (inst_add->U.I.SrcReg[1].Negate && src1_neg != dstmask) - return 0; - - if (!is_presub_candidate(c, inst_add)) - return 0; - - if (presub_helper(c, inst_add, RC_PRESUB_ADD, presub_replace_add)) { - rc_remove_instruction(inst_add); - return 1; - } - return 0; -} - -static void presub_replace_inv( - struct rc_instruction * inst_add, - struct rc_instruction * inst_reader, - unsigned int src_index) -{ - /* We must be careful not to modify inst_add, since it - * is possible it will remain part of the program.*/ - inst_reader->U.I.PreSub.SrcReg[0] = inst_add->U.I.SrcReg[1]; - inst_reader->U.I.PreSub.SrcReg[0].Negate = 0; - inst_reader->U.I.PreSub.Opcode = RC_PRESUB_INV; - inst_reader->U.I.SrcReg[src_index] = chain_srcregs(inst_reader->U.I.SrcReg[src_index], - inst_reader->U.I.PreSub.SrcReg[0]); - - inst_reader->U.I.SrcReg[src_index].File = RC_FILE_PRESUB; - inst_reader->U.I.SrcReg[src_index].Index = RC_PRESUB_INV; -} - -/** - * PRESUB_INV: ADD TEMP[0], none.1, -TEMP[1] - * Use the presubtract 1 - src0 for all readers of TEMP[0]. The first source - * of the add instruction must have the constatnt 1 swizzle. This function - * does not check const registers to see if their value is 1.0, so it should - * be called after the constant_folding optimization. - * @return - * 0 if the ADD instruction is still part of the program. - * 1 if the ADD instruction is no longer part of the program. - */ -static int peephole_add_presub_inv( - struct radeon_compiler * c, - struct rc_instruction * inst_add) -{ - unsigned int i, swz; - - if (!is_presub_candidate(c, inst_add)) - return 0; - - /* Check if src0 is 1. */ - /* XXX It would be nice to use is_src_uniform_constant here, but that - * function only works if the register's file is RC_FILE_NONE */ - for(i = 0; i < 4; i++ ) { - swz = GET_SWZ(inst_add->U.I.SrcReg[0].Swizzle, i); - if(((1 << i) & inst_add->U.I.DstReg.WriteMask) - && swz != RC_SWIZZLE_ONE) { - return 0; - } - } - - /* Check src1. */ - if ((inst_add->U.I.SrcReg[1].Negate & inst_add->U.I.DstReg.WriteMask) != - inst_add->U.I.DstReg.WriteMask - || inst_add->U.I.SrcReg[1].Abs - || (inst_add->U.I.SrcReg[1].File != RC_FILE_TEMPORARY - && inst_add->U.I.SrcReg[1].File != RC_FILE_CONSTANT) - || src_has_const_swz(inst_add->U.I.SrcReg[1])) { - - return 0; - } - - if (presub_helper(c, inst_add, RC_PRESUB_INV, presub_replace_inv)) { - rc_remove_instruction(inst_add); - return 1; - } - return 0; -} - -/** - * @return - * 0 if inst is still part of the program. - * 1 if inst is no longer part of the program. - */ -static int peephole(struct radeon_compiler * c, struct rc_instruction * inst) -{ - switch(inst->U.I.Opcode){ - case RC_OPCODE_ADD: - if (c->has_presub) { - if(peephole_add_presub_inv(c, inst)) - return 1; - if(peephole_add_presub_add(c, inst)) - return 1; - } - break; - default: - break; - } - return 0; -} - -void rc_optimize(struct radeon_compiler * c, void *user) -{ - struct rc_instruction * inst = c->Program.Instructions.Next; - while(inst != &c->Program.Instructions) { - struct rc_instruction * cur = inst; - inst = inst->Next; - - constant_folding(c, cur); - - if(peephole(c, cur)) - continue; - - if (cur->U.I.Opcode == RC_OPCODE_MOV) { - copy_propagate(c, cur); - /* cur may no longer be part of the program */ - } - } -} |