| /* |
| * 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" |
| #include "radeon_swizzle.h" |
| |
| |
| static void rewrite_source(struct radeon_compiler * c, |
| struct rc_instruction * inst, unsigned src) |
| { |
| struct rc_swizzle_split split; |
| unsigned int tempreg = rc_find_free_temporary(c); |
| unsigned int usemask; |
| |
| usemask = 0; |
| for(unsigned int chan = 0; chan < 4; ++chan) { |
| if (GET_SWZ(inst->U.I.SrcReg[src].Swizzle, chan) != RC_SWIZZLE_UNUSED) |
| usemask |= 1 << chan; |
| } |
| |
| c->SwizzleCaps->Split(inst->U.I.SrcReg[src], usemask, &split); |
| |
| for(unsigned int phase = 0; phase < split.NumPhases; ++phase) { |
| struct rc_instruction * mov = rc_insert_new_instruction(c, inst->Prev); |
| unsigned int phase_refmask; |
| unsigned int masked_negate; |
| |
| mov->U.I.Opcode = RC_OPCODE_MOV; |
| mov->U.I.DstReg.File = RC_FILE_TEMPORARY; |
| mov->U.I.DstReg.Index = tempreg; |
| mov->U.I.DstReg.WriteMask = split.Phase[phase]; |
| mov->U.I.SrcReg[0] = inst->U.I.SrcReg[src]; |
| mov->U.I.PreSub = inst->U.I.PreSub; |
| |
| phase_refmask = 0; |
| for(unsigned int chan = 0; chan < 4; ++chan) { |
| if (!GET_BIT(split.Phase[phase], chan)) |
| SET_SWZ(mov->U.I.SrcReg[0].Swizzle, chan, RC_SWIZZLE_UNUSED); |
| else |
| phase_refmask |= 1 << GET_SWZ(mov->U.I.SrcReg[0].Swizzle, chan); |
| } |
| |
| phase_refmask &= RC_MASK_XYZW; |
| |
| masked_negate = split.Phase[phase] & mov->U.I.SrcReg[0].Negate; |
| if (masked_negate == 0) |
| mov->U.I.SrcReg[0].Negate = 0; |
| else if (masked_negate == split.Phase[phase]) |
| mov->U.I.SrcReg[0].Negate = RC_MASK_XYZW; |
| |
| } |
| |
| inst->U.I.SrcReg[src].File = RC_FILE_TEMPORARY; |
| inst->U.I.SrcReg[src].Index = tempreg; |
| inst->U.I.SrcReg[src].Swizzle = 0; |
| inst->U.I.SrcReg[src].Negate = RC_MASK_NONE; |
| inst->U.I.SrcReg[src].Abs = 0; |
| for(unsigned int chan = 0; chan < 4; ++chan) { |
| SET_SWZ(inst->U.I.SrcReg[src].Swizzle, chan, |
| GET_BIT(usemask, chan) ? chan : RC_SWIZZLE_UNUSED); |
| } |
| } |
| |
| void rc_dataflow_swizzles(struct radeon_compiler * c, void *user) |
| { |
| struct rc_instruction * inst; |
| |
| for(inst = c->Program.Instructions.Next; inst != &c->Program.Instructions; inst = inst->Next) { |
| const struct rc_opcode_info * opcode = rc_get_opcode_info(inst->U.I.Opcode); |
| unsigned int src; |
| |
| for(src = 0; src < opcode->NumSrcRegs; ++src) { |
| if (!c->SwizzleCaps->IsNative(inst->U.I.Opcode, inst->U.I.SrcReg[src])) |
| rewrite_source(c, inst, src); |
| } |
| } |
| } |