File: | lib/Target/AMDGPU/R600InstrInfo.cpp |
Warning: | line 407, column 5 Undefined or garbage value returned to caller |
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1 | //===-- R600InstrInfo.cpp - R600 Instruction Information ------------------===// | |||
2 | // | |||
3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. | |||
4 | // See https://llvm.org/LICENSE.txt for license information. | |||
5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception | |||
6 | // | |||
7 | //===----------------------------------------------------------------------===// | |||
8 | // | |||
9 | /// \file | |||
10 | /// R600 Implementation of TargetInstrInfo. | |||
11 | // | |||
12 | //===----------------------------------------------------------------------===// | |||
13 | ||||
14 | #include "R600InstrInfo.h" | |||
15 | #include "AMDGPU.h" | |||
16 | #include "AMDGPUInstrInfo.h" | |||
17 | #include "AMDGPUSubtarget.h" | |||
18 | #include "R600Defines.h" | |||
19 | #include "R600FrameLowering.h" | |||
20 | #include "R600RegisterInfo.h" | |||
21 | #include "MCTargetDesc/AMDGPUMCTargetDesc.h" | |||
22 | #include "Utils/AMDGPUBaseInfo.h" | |||
23 | #include "llvm/ADT/BitVector.h" | |||
24 | #include "llvm/ADT/SmallSet.h" | |||
25 | #include "llvm/ADT/SmallVector.h" | |||
26 | #include "llvm/CodeGen/MachineBasicBlock.h" | |||
27 | #include "llvm/CodeGen/MachineFrameInfo.h" | |||
28 | #include "llvm/CodeGen/MachineFunction.h" | |||
29 | #include "llvm/CodeGen/MachineInstr.h" | |||
30 | #include "llvm/CodeGen/MachineInstrBuilder.h" | |||
31 | #include "llvm/CodeGen/MachineOperand.h" | |||
32 | #include "llvm/CodeGen/MachineRegisterInfo.h" | |||
33 | #include "llvm/CodeGen/TargetRegisterInfo.h" | |||
34 | #include "llvm/CodeGen/TargetSubtargetInfo.h" | |||
35 | #include "llvm/Support/ErrorHandling.h" | |||
36 | #include <algorithm> | |||
37 | #include <cassert> | |||
38 | #include <cstdint> | |||
39 | #include <cstring> | |||
40 | #include <iterator> | |||
41 | #include <utility> | |||
42 | #include <vector> | |||
43 | ||||
44 | using namespace llvm; | |||
45 | ||||
46 | #define GET_INSTRINFO_CTOR_DTOR | |||
47 | #include "R600GenDFAPacketizer.inc" | |||
48 | ||||
49 | #define GET_INSTRINFO_CTOR_DTOR | |||
50 | #define GET_INSTRMAP_INFO | |||
51 | #define GET_INSTRINFO_NAMED_OPS | |||
52 | #include "R600GenInstrInfo.inc" | |||
53 | ||||
54 | R600InstrInfo::R600InstrInfo(const R600Subtarget &ST) | |||
55 | : R600GenInstrInfo(-1, -1), RI(), ST(ST) {} | |||
56 | ||||
57 | bool R600InstrInfo::isVector(const MachineInstr &MI) const { | |||
58 | return get(MI.getOpcode()).TSFlags & R600_InstFlag::VECTOR; | |||
59 | } | |||
60 | ||||
61 | void R600InstrInfo::copyPhysReg(MachineBasicBlock &MBB, | |||
62 | MachineBasicBlock::iterator MI, | |||
63 | const DebugLoc &DL, unsigned DestReg, | |||
64 | unsigned SrcReg, bool KillSrc) const { | |||
65 | unsigned VectorComponents = 0; | |||
66 | if ((R600::R600_Reg128RegClass.contains(DestReg) || | |||
67 | R600::R600_Reg128VerticalRegClass.contains(DestReg)) && | |||
68 | (R600::R600_Reg128RegClass.contains(SrcReg) || | |||
69 | R600::R600_Reg128VerticalRegClass.contains(SrcReg))) { | |||
70 | VectorComponents = 4; | |||
71 | } else if((R600::R600_Reg64RegClass.contains(DestReg) || | |||
72 | R600::R600_Reg64VerticalRegClass.contains(DestReg)) && | |||
73 | (R600::R600_Reg64RegClass.contains(SrcReg) || | |||
74 | R600::R600_Reg64VerticalRegClass.contains(SrcReg))) { | |||
75 | VectorComponents = 2; | |||
76 | } | |||
77 | ||||
78 | if (VectorComponents > 0) { | |||
79 | for (unsigned I = 0; I < VectorComponents; I++) { | |||
80 | unsigned SubRegIndex = AMDGPURegisterInfo::getSubRegFromChannel(I); | |||
81 | buildDefaultInstruction(MBB, MI, R600::MOV, | |||
82 | RI.getSubReg(DestReg, SubRegIndex), | |||
83 | RI.getSubReg(SrcReg, SubRegIndex)) | |||
84 | .addReg(DestReg, | |||
85 | RegState::Define | RegState::Implicit); | |||
86 | } | |||
87 | } else { | |||
88 | MachineInstr *NewMI = buildDefaultInstruction(MBB, MI, R600::MOV, | |||
89 | DestReg, SrcReg); | |||
90 | NewMI->getOperand(getOperandIdx(*NewMI, R600::OpName::src0)) | |||
91 | .setIsKill(KillSrc); | |||
92 | } | |||
93 | } | |||
94 | ||||
95 | /// \returns true if \p MBBI can be moved into a new basic. | |||
96 | bool R600InstrInfo::isLegalToSplitMBBAt(MachineBasicBlock &MBB, | |||
97 | MachineBasicBlock::iterator MBBI) const { | |||
98 | for (MachineInstr::const_mop_iterator I = MBBI->operands_begin(), | |||
99 | E = MBBI->operands_end(); I != E; ++I) { | |||
100 | if (I->isReg() && !TargetRegisterInfo::isVirtualRegister(I->getReg()) && | |||
101 | I->isUse() && RI.isPhysRegLiveAcrossClauses(I->getReg())) | |||
102 | return false; | |||
103 | } | |||
104 | return true; | |||
105 | } | |||
106 | ||||
107 | bool R600InstrInfo::isMov(unsigned Opcode) const { | |||
108 | switch(Opcode) { | |||
109 | default: | |||
110 | return false; | |||
111 | case R600::MOV: | |||
112 | case R600::MOV_IMM_F32: | |||
113 | case R600::MOV_IMM_I32: | |||
114 | return true; | |||
115 | } | |||
116 | } | |||
117 | ||||
118 | bool R600InstrInfo::isReductionOp(unsigned Opcode) const { | |||
119 | return false; | |||
120 | } | |||
121 | ||||
122 | bool R600InstrInfo::isCubeOp(unsigned Opcode) const { | |||
123 | switch(Opcode) { | |||
124 | default: return false; | |||
125 | case R600::CUBE_r600_pseudo: | |||
126 | case R600::CUBE_r600_real: | |||
127 | case R600::CUBE_eg_pseudo: | |||
128 | case R600::CUBE_eg_real: | |||
129 | return true; | |||
130 | } | |||
131 | } | |||
132 | ||||
133 | bool R600InstrInfo::isALUInstr(unsigned Opcode) const { | |||
134 | unsigned TargetFlags = get(Opcode).TSFlags; | |||
135 | ||||
136 | return (TargetFlags & R600_InstFlag::ALU_INST); | |||
137 | } | |||
138 | ||||
139 | bool R600InstrInfo::hasInstrModifiers(unsigned Opcode) const { | |||
140 | unsigned TargetFlags = get(Opcode).TSFlags; | |||
141 | ||||
142 | return ((TargetFlags & R600_InstFlag::OP1) | | |||
143 | (TargetFlags & R600_InstFlag::OP2) | | |||
144 | (TargetFlags & R600_InstFlag::OP3)); | |||
145 | } | |||
146 | ||||
147 | bool R600InstrInfo::isLDSInstr(unsigned Opcode) const { | |||
148 | unsigned TargetFlags = get(Opcode).TSFlags; | |||
149 | ||||
150 | return ((TargetFlags & R600_InstFlag::LDS_1A) | | |||
151 | (TargetFlags & R600_InstFlag::LDS_1A1D) | | |||
152 | (TargetFlags & R600_InstFlag::LDS_1A2D)); | |||
153 | } | |||
154 | ||||
155 | bool R600InstrInfo::isLDSRetInstr(unsigned Opcode) const { | |||
156 | return isLDSInstr(Opcode) && getOperandIdx(Opcode, R600::OpName::dst) != -1; | |||
157 | } | |||
158 | ||||
159 | bool R600InstrInfo::canBeConsideredALU(const MachineInstr &MI) const { | |||
160 | if (isALUInstr(MI.getOpcode())) | |||
161 | return true; | |||
162 | if (isVector(MI) || isCubeOp(MI.getOpcode())) | |||
163 | return true; | |||
164 | switch (MI.getOpcode()) { | |||
165 | case R600::PRED_X: | |||
166 | case R600::INTERP_PAIR_XY: | |||
167 | case R600::INTERP_PAIR_ZW: | |||
168 | case R600::INTERP_VEC_LOAD: | |||
169 | case R600::COPY: | |||
170 | case R600::DOT_4: | |||
171 | return true; | |||
172 | default: | |||
173 | return false; | |||
174 | } | |||
175 | } | |||
176 | ||||
177 | bool R600InstrInfo::isTransOnly(unsigned Opcode) const { | |||
178 | if (ST.hasCaymanISA()) | |||
179 | return false; | |||
180 | return (get(Opcode).getSchedClass() == R600::Sched::TransALU); | |||
181 | } | |||
182 | ||||
183 | bool R600InstrInfo::isTransOnly(const MachineInstr &MI) const { | |||
184 | return isTransOnly(MI.getOpcode()); | |||
185 | } | |||
186 | ||||
187 | bool R600InstrInfo::isVectorOnly(unsigned Opcode) const { | |||
188 | return (get(Opcode).getSchedClass() == R600::Sched::VecALU); | |||
189 | } | |||
190 | ||||
191 | bool R600InstrInfo::isVectorOnly(const MachineInstr &MI) const { | |||
192 | return isVectorOnly(MI.getOpcode()); | |||
193 | } | |||
194 | ||||
195 | bool R600InstrInfo::isExport(unsigned Opcode) const { | |||
196 | return (get(Opcode).TSFlags & R600_InstFlag::IS_EXPORT); | |||
197 | } | |||
198 | ||||
199 | bool R600InstrInfo::usesVertexCache(unsigned Opcode) const { | |||
200 | return ST.hasVertexCache() && IS_VTX(get(Opcode))((get(Opcode)).TSFlags & R600_InstFlag::VTX_INST); | |||
201 | } | |||
202 | ||||
203 | bool R600InstrInfo::usesVertexCache(const MachineInstr &MI) const { | |||
204 | const MachineFunction *MF = MI.getParent()->getParent(); | |||
205 | return !AMDGPU::isCompute(MF->getFunction().getCallingConv()) && | |||
206 | usesVertexCache(MI.getOpcode()); | |||
207 | } | |||
208 | ||||
209 | bool R600InstrInfo::usesTextureCache(unsigned Opcode) const { | |||
210 | return (!ST.hasVertexCache() && IS_VTX(get(Opcode))((get(Opcode)).TSFlags & R600_InstFlag::VTX_INST)) || IS_TEX(get(Opcode))((get(Opcode)).TSFlags & R600_InstFlag::TEX_INST); | |||
211 | } | |||
212 | ||||
213 | bool R600InstrInfo::usesTextureCache(const MachineInstr &MI) const { | |||
214 | const MachineFunction *MF = MI.getParent()->getParent(); | |||
215 | return (AMDGPU::isCompute(MF->getFunction().getCallingConv()) && | |||
216 | usesVertexCache(MI.getOpcode())) || | |||
217 | usesTextureCache(MI.getOpcode()); | |||
218 | } | |||
219 | ||||
220 | bool R600InstrInfo::mustBeLastInClause(unsigned Opcode) const { | |||
221 | switch (Opcode) { | |||
222 | case R600::KILLGT: | |||
223 | case R600::GROUP_BARRIER: | |||
224 | return true; | |||
225 | default: | |||
226 | return false; | |||
227 | } | |||
228 | } | |||
229 | ||||
230 | bool R600InstrInfo::usesAddressRegister(MachineInstr &MI) const { | |||
231 | return MI.findRegisterUseOperandIdx(R600::AR_X, false, &RI) != -1; | |||
232 | } | |||
233 | ||||
234 | bool R600InstrInfo::definesAddressRegister(MachineInstr &MI) const { | |||
235 | return MI.findRegisterDefOperandIdx(R600::AR_X, false, false, &RI) != -1; | |||
236 | } | |||
237 | ||||
238 | bool R600InstrInfo::readsLDSSrcReg(const MachineInstr &MI) const { | |||
239 | if (!isALUInstr(MI.getOpcode())) { | |||
240 | return false; | |||
241 | } | |||
242 | for (MachineInstr::const_mop_iterator I = MI.operands_begin(), | |||
243 | E = MI.operands_end(); | |||
244 | I != E; ++I) { | |||
245 | if (!I->isReg() || !I->isUse() || | |||
246 | TargetRegisterInfo::isVirtualRegister(I->getReg())) | |||
247 | continue; | |||
248 | ||||
249 | if (R600::R600_LDS_SRC_REGRegClass.contains(I->getReg())) | |||
250 | return true; | |||
251 | } | |||
252 | return false; | |||
253 | } | |||
254 | ||||
255 | int R600InstrInfo::getSelIdx(unsigned Opcode, unsigned SrcIdx) const { | |||
256 | static const unsigned SrcSelTable[][2] = { | |||
257 | {R600::OpName::src0, R600::OpName::src0_sel}, | |||
258 | {R600::OpName::src1, R600::OpName::src1_sel}, | |||
259 | {R600::OpName::src2, R600::OpName::src2_sel}, | |||
260 | {R600::OpName::src0_X, R600::OpName::src0_sel_X}, | |||
261 | {R600::OpName::src0_Y, R600::OpName::src0_sel_Y}, | |||
262 | {R600::OpName::src0_Z, R600::OpName::src0_sel_Z}, | |||
263 | {R600::OpName::src0_W, R600::OpName::src0_sel_W}, | |||
264 | {R600::OpName::src1_X, R600::OpName::src1_sel_X}, | |||
265 | {R600::OpName::src1_Y, R600::OpName::src1_sel_Y}, | |||
266 | {R600::OpName::src1_Z, R600::OpName::src1_sel_Z}, | |||
267 | {R600::OpName::src1_W, R600::OpName::src1_sel_W} | |||
268 | }; | |||
269 | ||||
270 | for (const auto &Row : SrcSelTable) { | |||
271 | if (getOperandIdx(Opcode, Row[0]) == (int)SrcIdx) { | |||
272 | return getOperandIdx(Opcode, Row[1]); | |||
273 | } | |||
274 | } | |||
275 | return -1; | |||
276 | } | |||
277 | ||||
278 | SmallVector<std::pair<MachineOperand *, int64_t>, 3> | |||
279 | R600InstrInfo::getSrcs(MachineInstr &MI) const { | |||
280 | SmallVector<std::pair<MachineOperand *, int64_t>, 3> Result; | |||
281 | ||||
282 | if (MI.getOpcode() == R600::DOT_4) { | |||
283 | static const unsigned OpTable[8][2] = { | |||
284 | {R600::OpName::src0_X, R600::OpName::src0_sel_X}, | |||
285 | {R600::OpName::src0_Y, R600::OpName::src0_sel_Y}, | |||
286 | {R600::OpName::src0_Z, R600::OpName::src0_sel_Z}, | |||
287 | {R600::OpName::src0_W, R600::OpName::src0_sel_W}, | |||
288 | {R600::OpName::src1_X, R600::OpName::src1_sel_X}, | |||
289 | {R600::OpName::src1_Y, R600::OpName::src1_sel_Y}, | |||
290 | {R600::OpName::src1_Z, R600::OpName::src1_sel_Z}, | |||
291 | {R600::OpName::src1_W, R600::OpName::src1_sel_W}, | |||
292 | }; | |||
293 | ||||
294 | for (unsigned j = 0; j < 8; j++) { | |||
295 | MachineOperand &MO = | |||
296 | MI.getOperand(getOperandIdx(MI.getOpcode(), OpTable[j][0])); | |||
297 | unsigned Reg = MO.getReg(); | |||
298 | if (Reg == R600::ALU_CONST) { | |||
299 | MachineOperand &Sel = | |||
300 | MI.getOperand(getOperandIdx(MI.getOpcode(), OpTable[j][1])); | |||
301 | Result.push_back(std::make_pair(&MO, Sel.getImm())); | |||
302 | continue; | |||
303 | } | |||
304 | ||||
305 | } | |||
306 | return Result; | |||
307 | } | |||
308 | ||||
309 | static const unsigned OpTable[3][2] = { | |||
310 | {R600::OpName::src0, R600::OpName::src0_sel}, | |||
311 | {R600::OpName::src1, R600::OpName::src1_sel}, | |||
312 | {R600::OpName::src2, R600::OpName::src2_sel}, | |||
313 | }; | |||
314 | ||||
315 | for (unsigned j = 0; j < 3; j++) { | |||
316 | int SrcIdx = getOperandIdx(MI.getOpcode(), OpTable[j][0]); | |||
317 | if (SrcIdx < 0) | |||
318 | break; | |||
319 | MachineOperand &MO = MI.getOperand(SrcIdx); | |||
320 | unsigned Reg = MO.getReg(); | |||
321 | if (Reg == R600::ALU_CONST) { | |||
322 | MachineOperand &Sel = | |||
323 | MI.getOperand(getOperandIdx(MI.getOpcode(), OpTable[j][1])); | |||
324 | Result.push_back(std::make_pair(&MO, Sel.getImm())); | |||
325 | continue; | |||
326 | } | |||
327 | if (Reg == R600::ALU_LITERAL_X) { | |||
328 | MachineOperand &Operand = | |||
329 | MI.getOperand(getOperandIdx(MI.getOpcode(), R600::OpName::literal)); | |||
330 | if (Operand.isImm()) { | |||
331 | Result.push_back(std::make_pair(&MO, Operand.getImm())); | |||
332 | continue; | |||
333 | } | |||
334 | assert(Operand.isGlobal())((Operand.isGlobal()) ? static_cast<void> (0) : __assert_fail ("Operand.isGlobal()", "/build/llvm-toolchain-snapshot-9~svn359999/lib/Target/AMDGPU/R600InstrInfo.cpp" , 334, __PRETTY_FUNCTION__)); | |||
335 | } | |||
336 | Result.push_back(std::make_pair(&MO, 0)); | |||
337 | } | |||
338 | return Result; | |||
339 | } | |||
340 | ||||
341 | std::vector<std::pair<int, unsigned>> | |||
342 | R600InstrInfo::ExtractSrcs(MachineInstr &MI, | |||
343 | const DenseMap<unsigned, unsigned> &PV, | |||
344 | unsigned &ConstCount) const { | |||
345 | ConstCount = 0; | |||
346 | const std::pair<int, unsigned> DummyPair(-1, 0); | |||
347 | std::vector<std::pair<int, unsigned>> Result; | |||
348 | unsigned i = 0; | |||
349 | for (const auto &Src : getSrcs(MI)) { | |||
350 | ++i; | |||
351 | unsigned Reg = Src.first->getReg(); | |||
352 | int Index = RI.getEncodingValue(Reg) & 0xff; | |||
353 | if (Reg == R600::OQAP) { | |||
354 | Result.push_back(std::make_pair(Index, 0U)); | |||
355 | } | |||
356 | if (PV.find(Reg) != PV.end()) { | |||
357 | // 255 is used to tells its a PS/PV reg | |||
358 | Result.push_back(std::make_pair(255, 0U)); | |||
359 | continue; | |||
360 | } | |||
361 | if (Index > 127) { | |||
362 | ConstCount++; | |||
363 | Result.push_back(DummyPair); | |||
364 | continue; | |||
365 | } | |||
366 | unsigned Chan = RI.getHWRegChan(Reg); | |||
367 | Result.push_back(std::make_pair(Index, Chan)); | |||
368 | } | |||
369 | for (; i < 3; ++i) | |||
370 | Result.push_back(DummyPair); | |||
371 | return Result; | |||
372 | } | |||
373 | ||||
374 | static std::vector<std::pair<int, unsigned>> | |||
375 | Swizzle(std::vector<std::pair<int, unsigned>> Src, | |||
376 | R600InstrInfo::BankSwizzle Swz) { | |||
377 | if (Src[0] == Src[1]) | |||
378 | Src[1].first = -1; | |||
379 | switch (Swz) { | |||
380 | case R600InstrInfo::ALU_VEC_012_SCL_210: | |||
381 | break; | |||
382 | case R600InstrInfo::ALU_VEC_021_SCL_122: | |||
383 | std::swap(Src[1], Src[2]); | |||
384 | break; | |||
385 | case R600InstrInfo::ALU_VEC_102_SCL_221: | |||
386 | std::swap(Src[0], Src[1]); | |||
387 | break; | |||
388 | case R600InstrInfo::ALU_VEC_120_SCL_212: | |||
389 | std::swap(Src[0], Src[1]); | |||
390 | std::swap(Src[0], Src[2]); | |||
391 | break; | |||
392 | case R600InstrInfo::ALU_VEC_201: | |||
393 | std::swap(Src[0], Src[2]); | |||
394 | std::swap(Src[0], Src[1]); | |||
395 | break; | |||
396 | case R600InstrInfo::ALU_VEC_210: | |||
397 | std::swap(Src[0], Src[2]); | |||
398 | break; | |||
399 | } | |||
400 | return Src; | |||
401 | } | |||
402 | ||||
403 | static unsigned getTransSwizzle(R600InstrInfo::BankSwizzle Swz, unsigned Op) { | |||
404 | switch (Swz) { | |||
405 | case R600InstrInfo::ALU_VEC_012_SCL_210: { | |||
406 | unsigned Cycles[3] = { 2, 1, 0}; | |||
407 | return Cycles[Op]; | |||
| ||||
408 | } | |||
409 | case R600InstrInfo::ALU_VEC_021_SCL_122: { | |||
410 | unsigned Cycles[3] = { 1, 2, 2}; | |||
411 | return Cycles[Op]; | |||
412 | } | |||
413 | case R600InstrInfo::ALU_VEC_120_SCL_212: { | |||
414 | unsigned Cycles[3] = { 2, 1, 2}; | |||
415 | return Cycles[Op]; | |||
416 | } | |||
417 | case R600InstrInfo::ALU_VEC_102_SCL_221: { | |||
418 | unsigned Cycles[3] = { 2, 2, 1}; | |||
419 | return Cycles[Op]; | |||
420 | } | |||
421 | default: | |||
422 | llvm_unreachable("Wrong Swizzle for Trans Slot")::llvm::llvm_unreachable_internal("Wrong Swizzle for Trans Slot" , "/build/llvm-toolchain-snapshot-9~svn359999/lib/Target/AMDGPU/R600InstrInfo.cpp" , 422); | |||
423 | } | |||
424 | } | |||
425 | ||||
426 | /// returns how many MIs (whose inputs are represented by IGSrcs) can be packed | |||
427 | /// in the same Instruction Group while meeting read port limitations given a | |||
428 | /// Swz swizzle sequence. | |||
429 | unsigned R600InstrInfo::isLegalUpTo( | |||
430 | const std::vector<std::vector<std::pair<int, unsigned>>> &IGSrcs, | |||
431 | const std::vector<R600InstrInfo::BankSwizzle> &Swz, | |||
432 | const std::vector<std::pair<int, unsigned>> &TransSrcs, | |||
433 | R600InstrInfo::BankSwizzle TransSwz) const { | |||
434 | int Vector[4][3]; | |||
435 | memset(Vector, -1, sizeof(Vector)); | |||
436 | for (unsigned i = 0, e = IGSrcs.size(); i < e; i++) { | |||
437 | const std::vector<std::pair<int, unsigned>> &Srcs = | |||
438 | Swizzle(IGSrcs[i], Swz[i]); | |||
439 | for (unsigned j = 0; j < 3; j++) { | |||
440 | const std::pair<int, unsigned> &Src = Srcs[j]; | |||
441 | if (Src.first < 0 || Src.first == 255) | |||
442 | continue; | |||
443 | if (Src.first == GET_REG_INDEX(RI.getEncodingValue(R600::OQAP))((RI.getEncodingValue(R600::OQAP)) & 0x1ff)) { | |||
444 | if (Swz[i] != R600InstrInfo::ALU_VEC_012_SCL_210 && | |||
445 | Swz[i] != R600InstrInfo::ALU_VEC_021_SCL_122) { | |||
446 | // The value from output queue A (denoted by register OQAP) can | |||
447 | // only be fetched during the first cycle. | |||
448 | return false; | |||
449 | } | |||
450 | // OQAP does not count towards the normal read port restrictions | |||
451 | continue; | |||
452 | } | |||
453 | if (Vector[Src.second][j] < 0) | |||
454 | Vector[Src.second][j] = Src.first; | |||
455 | if (Vector[Src.second][j] != Src.first) | |||
456 | return i; | |||
457 | } | |||
458 | } | |||
459 | // Now check Trans Alu | |||
460 | for (unsigned i = 0, e = TransSrcs.size(); i < e; ++i) { | |||
461 | const std::pair<int, unsigned> &Src = TransSrcs[i]; | |||
462 | unsigned Cycle = getTransSwizzle(TransSwz, i); | |||
463 | if (Src.first < 0) | |||
464 | continue; | |||
465 | if (Src.first == 255) | |||
466 | continue; | |||
467 | if (Vector[Src.second][Cycle] < 0) | |||
468 | Vector[Src.second][Cycle] = Src.first; | |||
469 | if (Vector[Src.second][Cycle] != Src.first) | |||
470 | return IGSrcs.size() - 1; | |||
471 | } | |||
472 | return IGSrcs.size(); | |||
473 | } | |||
474 | ||||
475 | /// Given a swizzle sequence SwzCandidate and an index Idx, returns the next | |||
476 | /// (in lexicographic term) swizzle sequence assuming that all swizzles after | |||
477 | /// Idx can be skipped | |||
478 | static bool | |||
479 | NextPossibleSolution( | |||
480 | std::vector<R600InstrInfo::BankSwizzle> &SwzCandidate, | |||
481 | unsigned Idx) { | |||
482 | assert(Idx < SwzCandidate.size())((Idx < SwzCandidate.size()) ? static_cast<void> (0) : __assert_fail ("Idx < SwzCandidate.size()", "/build/llvm-toolchain-snapshot-9~svn359999/lib/Target/AMDGPU/R600InstrInfo.cpp" , 482, __PRETTY_FUNCTION__)); | |||
483 | int ResetIdx = Idx; | |||
484 | while (ResetIdx > -1 && SwzCandidate[ResetIdx] == R600InstrInfo::ALU_VEC_210) | |||
485 | ResetIdx --; | |||
486 | for (unsigned i = ResetIdx + 1, e = SwzCandidate.size(); i < e; i++) { | |||
487 | SwzCandidate[i] = R600InstrInfo::ALU_VEC_012_SCL_210; | |||
488 | } | |||
489 | if (ResetIdx == -1) | |||
490 | return false; | |||
491 | int NextSwizzle = SwzCandidate[ResetIdx] + 1; | |||
492 | SwzCandidate[ResetIdx] = (R600InstrInfo::BankSwizzle)NextSwizzle; | |||
493 | return true; | |||
494 | } | |||
495 | ||||
496 | /// Enumerate all possible Swizzle sequence to find one that can meet all | |||
497 | /// read port requirements. | |||
498 | bool R600InstrInfo::FindSwizzleForVectorSlot( | |||
499 | const std::vector<std::vector<std::pair<int, unsigned>>> &IGSrcs, | |||
500 | std::vector<R600InstrInfo::BankSwizzle> &SwzCandidate, | |||
501 | const std::vector<std::pair<int, unsigned>> &TransSrcs, | |||
502 | R600InstrInfo::BankSwizzle TransSwz) const { | |||
503 | unsigned ValidUpTo = 0; | |||
504 | do { | |||
505 | ValidUpTo = isLegalUpTo(IGSrcs, SwzCandidate, TransSrcs, TransSwz); | |||
506 | if (ValidUpTo == IGSrcs.size()) | |||
507 | return true; | |||
508 | } while (NextPossibleSolution(SwzCandidate, ValidUpTo)); | |||
509 | return false; | |||
510 | } | |||
511 | ||||
512 | /// Instructions in Trans slot can't read gpr at cycle 0 if they also read | |||
513 | /// a const, and can't read a gpr at cycle 1 if they read 2 const. | |||
514 | static bool | |||
515 | isConstCompatible(R600InstrInfo::BankSwizzle TransSwz, | |||
516 | const std::vector<std::pair<int, unsigned>> &TransOps, | |||
517 | unsigned ConstCount) { | |||
518 | // TransALU can't read 3 constants | |||
519 | if (ConstCount > 2) | |||
520 | return false; | |||
521 | for (unsigned i = 0, e = TransOps.size(); i < e; ++i) { | |||
522 | const std::pair<int, unsigned> &Src = TransOps[i]; | |||
523 | unsigned Cycle = getTransSwizzle(TransSwz, i); | |||
524 | if (Src.first < 0) | |||
525 | continue; | |||
526 | if (ConstCount > 0 && Cycle == 0) | |||
527 | return false; | |||
528 | if (ConstCount > 1 && Cycle == 1) | |||
529 | return false; | |||
530 | } | |||
531 | return true; | |||
532 | } | |||
533 | ||||
534 | bool | |||
535 | R600InstrInfo::fitsReadPortLimitations(const std::vector<MachineInstr *> &IG, | |||
536 | const DenseMap<unsigned, unsigned> &PV, | |||
537 | std::vector<BankSwizzle> &ValidSwizzle, | |||
538 | bool isLastAluTrans) | |||
539 | const { | |||
540 | //Todo : support shared src0 - src1 operand | |||
541 | ||||
542 | std::vector<std::vector<std::pair<int, unsigned>>> IGSrcs; | |||
543 | ValidSwizzle.clear(); | |||
544 | unsigned ConstCount; | |||
545 | BankSwizzle TransBS = ALU_VEC_012_SCL_210; | |||
546 | for (unsigned i = 0, e = IG.size(); i < e; ++i) { | |||
| ||||
547 | IGSrcs.push_back(ExtractSrcs(*IG[i], PV, ConstCount)); | |||
548 | unsigned Op = getOperandIdx(IG[i]->getOpcode(), | |||
549 | R600::OpName::bank_swizzle); | |||
550 | ValidSwizzle.push_back( (R600InstrInfo::BankSwizzle) | |||
551 | IG[i]->getOperand(Op).getImm()); | |||
552 | } | |||
553 | std::vector<std::pair<int, unsigned>> TransOps; | |||
554 | if (!isLastAluTrans) | |||
555 | return FindSwizzleForVectorSlot(IGSrcs, ValidSwizzle, TransOps, TransBS); | |||
556 | ||||
557 | TransOps = std::move(IGSrcs.back()); | |||
558 | IGSrcs.pop_back(); | |||
559 | ValidSwizzle.pop_back(); | |||
560 | ||||
561 | static const R600InstrInfo::BankSwizzle TransSwz[] = { | |||
562 | ALU_VEC_012_SCL_210, | |||
563 | ALU_VEC_021_SCL_122, | |||
564 | ALU_VEC_120_SCL_212, | |||
565 | ALU_VEC_102_SCL_221 | |||
566 | }; | |||
567 | for (unsigned i = 0; i < 4; i++) { | |||
568 | TransBS = TransSwz[i]; | |||
569 | if (!isConstCompatible(TransBS, TransOps, ConstCount)) | |||
570 | continue; | |||
571 | bool Result = FindSwizzleForVectorSlot(IGSrcs, ValidSwizzle, TransOps, | |||
572 | TransBS); | |||
573 | if (Result) { | |||
574 | ValidSwizzle.push_back(TransBS); | |||
575 | return true; | |||
576 | } | |||
577 | } | |||
578 | ||||
579 | return false; | |||
580 | } | |||
581 | ||||
582 | bool | |||
583 | R600InstrInfo::fitsConstReadLimitations(const std::vector<unsigned> &Consts) | |||
584 | const { | |||
585 | assert (Consts.size() <= 12 && "Too many operands in instructions group")((Consts.size() <= 12 && "Too many operands in instructions group" ) ? static_cast<void> (0) : __assert_fail ("Consts.size() <= 12 && \"Too many operands in instructions group\"" , "/build/llvm-toolchain-snapshot-9~svn359999/lib/Target/AMDGPU/R600InstrInfo.cpp" , 585, __PRETTY_FUNCTION__)); | |||
586 | unsigned Pair1 = 0, Pair2 = 0; | |||
587 | for (unsigned i = 0, n = Consts.size(); i < n; ++i) { | |||
588 | unsigned ReadConstHalf = Consts[i] & 2; | |||
589 | unsigned ReadConstIndex = Consts[i] & (~3); | |||
590 | unsigned ReadHalfConst = ReadConstIndex | ReadConstHalf; | |||
591 | if (!Pair1) { | |||
592 | Pair1 = ReadHalfConst; | |||
593 | continue; | |||
594 | } | |||
595 | if (Pair1 == ReadHalfConst) | |||
596 | continue; | |||
597 | if (!Pair2) { | |||
598 | Pair2 = ReadHalfConst; | |||
599 | continue; | |||
600 | } | |||
601 | if (Pair2 != ReadHalfConst) | |||
602 | return false; | |||
603 | } | |||
604 | return true; | |||
605 | } | |||
606 | ||||
607 | bool | |||
608 | R600InstrInfo::fitsConstReadLimitations(const std::vector<MachineInstr *> &MIs) | |||
609 | const { | |||
610 | std::vector<unsigned> Consts; | |||
611 | SmallSet<int64_t, 4> Literals; | |||
612 | for (unsigned i = 0, n = MIs.size(); i < n; i++) { | |||
613 | MachineInstr &MI = *MIs[i]; | |||
614 | if (!isALUInstr(MI.getOpcode())) | |||
615 | continue; | |||
616 | ||||
617 | for (const auto &Src : getSrcs(MI)) { | |||
618 | if (Src.first->getReg() == R600::ALU_LITERAL_X) | |||
619 | Literals.insert(Src.second); | |||
620 | if (Literals.size() > 4) | |||
621 | return false; | |||
622 | if (Src.first->getReg() == R600::ALU_CONST) | |||
623 | Consts.push_back(Src.second); | |||
624 | if (R600::R600_KC0RegClass.contains(Src.first->getReg()) || | |||
625 | R600::R600_KC1RegClass.contains(Src.first->getReg())) { | |||
626 | unsigned Index = RI.getEncodingValue(Src.first->getReg()) & 0xff; | |||
627 | unsigned Chan = RI.getHWRegChan(Src.first->getReg()); | |||
628 | Consts.push_back((Index << 2) | Chan); | |||
629 | } | |||
630 | } | |||
631 | } | |||
632 | return fitsConstReadLimitations(Consts); | |||
633 | } | |||
634 | ||||
635 | DFAPacketizer * | |||
636 | R600InstrInfo::CreateTargetScheduleState(const TargetSubtargetInfo &STI) const { | |||
637 | const InstrItineraryData *II = STI.getInstrItineraryData(); | |||
638 | return static_cast<const R600Subtarget &>(STI).createDFAPacketizer(II); | |||
639 | } | |||
640 | ||||
641 | static bool | |||
642 | isPredicateSetter(unsigned Opcode) { | |||
643 | switch (Opcode) { | |||
644 | case R600::PRED_X: | |||
645 | return true; | |||
646 | default: | |||
647 | return false; | |||
648 | } | |||
649 | } | |||
650 | ||||
651 | static MachineInstr * | |||
652 | findFirstPredicateSetterFrom(MachineBasicBlock &MBB, | |||
653 | MachineBasicBlock::iterator I) { | |||
654 | while (I != MBB.begin()) { | |||
655 | --I; | |||
656 | MachineInstr &MI = *I; | |||
657 | if (isPredicateSetter(MI.getOpcode())) | |||
658 | return &MI; | |||
659 | } | |||
660 | ||||
661 | return nullptr; | |||
662 | } | |||
663 | ||||
664 | static | |||
665 | bool isJump(unsigned Opcode) { | |||
666 | return Opcode == R600::JUMP || Opcode == R600::JUMP_COND; | |||
667 | } | |||
668 | ||||
669 | static bool isBranch(unsigned Opcode) { | |||
670 | return Opcode == R600::BRANCH || Opcode == R600::BRANCH_COND_i32 || | |||
671 | Opcode == R600::BRANCH_COND_f32; | |||
672 | } | |||
673 | ||||
674 | bool R600InstrInfo::analyzeBranch(MachineBasicBlock &MBB, | |||
675 | MachineBasicBlock *&TBB, | |||
676 | MachineBasicBlock *&FBB, | |||
677 | SmallVectorImpl<MachineOperand> &Cond, | |||
678 | bool AllowModify) const { | |||
679 | // Most of the following comes from the ARM implementation of AnalyzeBranch | |||
680 | ||||
681 | // If the block has no terminators, it just falls into the block after it. | |||
682 | MachineBasicBlock::iterator I = MBB.getLastNonDebugInstr(); | |||
683 | if (I == MBB.end()) | |||
684 | return false; | |||
685 | ||||
686 | // R600::BRANCH* instructions are only available after isel and are not | |||
687 | // handled | |||
688 | if (isBranch(I->getOpcode())) | |||
689 | return true; | |||
690 | if (!isJump(I->getOpcode())) { | |||
691 | return false; | |||
692 | } | |||
693 | ||||
694 | // Remove successive JUMP | |||
695 | while (I != MBB.begin() && std::prev(I)->getOpcode() == R600::JUMP) { | |||
696 | MachineBasicBlock::iterator PriorI = std::prev(I); | |||
697 | if (AllowModify) | |||
698 | I->removeFromParent(); | |||
699 | I = PriorI; | |||
700 | } | |||
701 | MachineInstr &LastInst = *I; | |||
702 | ||||
703 | // If there is only one terminator instruction, process it. | |||
704 | unsigned LastOpc = LastInst.getOpcode(); | |||
705 | if (I == MBB.begin() || !isJump((--I)->getOpcode())) { | |||
706 | if (LastOpc == R600::JUMP) { | |||
707 | TBB = LastInst.getOperand(0).getMBB(); | |||
708 | return false; | |||
709 | } else if (LastOpc == R600::JUMP_COND) { | |||
710 | auto predSet = I; | |||
711 | while (!isPredicateSetter(predSet->getOpcode())) { | |||
712 | predSet = --I; | |||
713 | } | |||
714 | TBB = LastInst.getOperand(0).getMBB(); | |||
715 | Cond.push_back(predSet->getOperand(1)); | |||
716 | Cond.push_back(predSet->getOperand(2)); | |||
717 | Cond.push_back(MachineOperand::CreateReg(R600::PRED_SEL_ONE, false)); | |||
718 | return false; | |||
719 | } | |||
720 | return true; // Can't handle indirect branch. | |||
721 | } | |||
722 | ||||
723 | // Get the instruction before it if it is a terminator. | |||
724 | MachineInstr &SecondLastInst = *I; | |||
725 | unsigned SecondLastOpc = SecondLastInst.getOpcode(); | |||
726 | ||||
727 | // If the block ends with a B and a Bcc, handle it. | |||
728 | if (SecondLastOpc == R600::JUMP_COND && LastOpc == R600::JUMP) { | |||
729 | auto predSet = --I; | |||
730 | while (!isPredicateSetter(predSet->getOpcode())) { | |||
731 | predSet = --I; | |||
732 | } | |||
733 | TBB = SecondLastInst.getOperand(0).getMBB(); | |||
734 | FBB = LastInst.getOperand(0).getMBB(); | |||
735 | Cond.push_back(predSet->getOperand(1)); | |||
736 | Cond.push_back(predSet->getOperand(2)); | |||
737 | Cond.push_back(MachineOperand::CreateReg(R600::PRED_SEL_ONE, false)); | |||
738 | return false; | |||
739 | } | |||
740 | ||||
741 | // Otherwise, can't handle this. | |||
742 | return true; | |||
743 | } | |||
744 | ||||
745 | static | |||
746 | MachineBasicBlock::iterator FindLastAluClause(MachineBasicBlock &MBB) { | |||
747 | for (MachineBasicBlock::reverse_iterator It = MBB.rbegin(), E = MBB.rend(); | |||
748 | It != E; ++It) { | |||
749 | if (It->getOpcode() == R600::CF_ALU || | |||
750 | It->getOpcode() == R600::CF_ALU_PUSH_BEFORE) | |||
751 | return It.getReverse(); | |||
752 | } | |||
753 | return MBB.end(); | |||
754 | } | |||
755 | ||||
756 | unsigned R600InstrInfo::insertBranch(MachineBasicBlock &MBB, | |||
757 | MachineBasicBlock *TBB, | |||
758 | MachineBasicBlock *FBB, | |||
759 | ArrayRef<MachineOperand> Cond, | |||
760 | const DebugLoc &DL, | |||
761 | int *BytesAdded) const { | |||
762 | assert(TBB && "insertBranch must not be told to insert a fallthrough")((TBB && "insertBranch must not be told to insert a fallthrough" ) ? static_cast<void> (0) : __assert_fail ("TBB && \"insertBranch must not be told to insert a fallthrough\"" , "/build/llvm-toolchain-snapshot-9~svn359999/lib/Target/AMDGPU/R600InstrInfo.cpp" , 762, __PRETTY_FUNCTION__)); | |||
763 | assert(!BytesAdded && "code size not handled")((!BytesAdded && "code size not handled") ? static_cast <void> (0) : __assert_fail ("!BytesAdded && \"code size not handled\"" , "/build/llvm-toolchain-snapshot-9~svn359999/lib/Target/AMDGPU/R600InstrInfo.cpp" , 763, __PRETTY_FUNCTION__)); | |||
764 | ||||
765 | if (!FBB) { | |||
766 | if (Cond.empty()) { | |||
767 | BuildMI(&MBB, DL, get(R600::JUMP)).addMBB(TBB); | |||
768 | return 1; | |||
769 | } else { | |||
770 | MachineInstr *PredSet = findFirstPredicateSetterFrom(MBB, MBB.end()); | |||
771 | assert(PredSet && "No previous predicate !")((PredSet && "No previous predicate !") ? static_cast <void> (0) : __assert_fail ("PredSet && \"No previous predicate !\"" , "/build/llvm-toolchain-snapshot-9~svn359999/lib/Target/AMDGPU/R600InstrInfo.cpp" , 771, __PRETTY_FUNCTION__)); | |||
772 | addFlag(*PredSet, 0, MO_FLAG_PUSH(1 << 4)); | |||
773 | PredSet->getOperand(2).setImm(Cond[1].getImm()); | |||
774 | ||||
775 | BuildMI(&MBB, DL, get(R600::JUMP_COND)) | |||
776 | .addMBB(TBB) | |||
777 | .addReg(R600::PREDICATE_BIT, RegState::Kill); | |||
778 | MachineBasicBlock::iterator CfAlu = FindLastAluClause(MBB); | |||
779 | if (CfAlu == MBB.end()) | |||
780 | return 1; | |||
781 | assert (CfAlu->getOpcode() == R600::CF_ALU)((CfAlu->getOpcode() == R600::CF_ALU) ? static_cast<void > (0) : __assert_fail ("CfAlu->getOpcode() == R600::CF_ALU" , "/build/llvm-toolchain-snapshot-9~svn359999/lib/Target/AMDGPU/R600InstrInfo.cpp" , 781, __PRETTY_FUNCTION__)); | |||
782 | CfAlu->setDesc(get(R600::CF_ALU_PUSH_BEFORE)); | |||
783 | return 1; | |||
784 | } | |||
785 | } else { | |||
786 | MachineInstr *PredSet = findFirstPredicateSetterFrom(MBB, MBB.end()); | |||
787 | assert(PredSet && "No previous predicate !")((PredSet && "No previous predicate !") ? static_cast <void> (0) : __assert_fail ("PredSet && \"No previous predicate !\"" , "/build/llvm-toolchain-snapshot-9~svn359999/lib/Target/AMDGPU/R600InstrInfo.cpp" , 787, __PRETTY_FUNCTION__)); | |||
788 | addFlag(*PredSet, 0, MO_FLAG_PUSH(1 << 4)); | |||
789 | PredSet->getOperand(2).setImm(Cond[1].getImm()); | |||
790 | BuildMI(&MBB, DL, get(R600::JUMP_COND)) | |||
791 | .addMBB(TBB) | |||
792 | .addReg(R600::PREDICATE_BIT, RegState::Kill); | |||
793 | BuildMI(&MBB, DL, get(R600::JUMP)).addMBB(FBB); | |||
794 | MachineBasicBlock::iterator CfAlu = FindLastAluClause(MBB); | |||
795 | if (CfAlu == MBB.end()) | |||
796 | return 2; | |||
797 | assert (CfAlu->getOpcode() == R600::CF_ALU)((CfAlu->getOpcode() == R600::CF_ALU) ? static_cast<void > (0) : __assert_fail ("CfAlu->getOpcode() == R600::CF_ALU" , "/build/llvm-toolchain-snapshot-9~svn359999/lib/Target/AMDGPU/R600InstrInfo.cpp" , 797, __PRETTY_FUNCTION__)); | |||
798 | CfAlu->setDesc(get(R600::CF_ALU_PUSH_BEFORE)); | |||
799 | return 2; | |||
800 | } | |||
801 | } | |||
802 | ||||
803 | unsigned R600InstrInfo::removeBranch(MachineBasicBlock &MBB, | |||
804 | int *BytesRemoved) const { | |||
805 | assert(!BytesRemoved && "code size not handled")((!BytesRemoved && "code size not handled") ? static_cast <void> (0) : __assert_fail ("!BytesRemoved && \"code size not handled\"" , "/build/llvm-toolchain-snapshot-9~svn359999/lib/Target/AMDGPU/R600InstrInfo.cpp" , 805, __PRETTY_FUNCTION__)); | |||
806 | ||||
807 | // Note : we leave PRED* instructions there. | |||
808 | // They may be needed when predicating instructions. | |||
809 | ||||
810 | MachineBasicBlock::iterator I = MBB.end(); | |||
811 | ||||
812 | if (I == MBB.begin()) { | |||
813 | return 0; | |||
814 | } | |||
815 | --I; | |||
816 | switch (I->getOpcode()) { | |||
817 | default: | |||
818 | return 0; | |||
819 | case R600::JUMP_COND: { | |||
820 | MachineInstr *predSet = findFirstPredicateSetterFrom(MBB, I); | |||
821 | clearFlag(*predSet, 0, MO_FLAG_PUSH(1 << 4)); | |||
822 | I->eraseFromParent(); | |||
823 | MachineBasicBlock::iterator CfAlu = FindLastAluClause(MBB); | |||
824 | if (CfAlu == MBB.end()) | |||
825 | break; | |||
826 | assert (CfAlu->getOpcode() == R600::CF_ALU_PUSH_BEFORE)((CfAlu->getOpcode() == R600::CF_ALU_PUSH_BEFORE) ? static_cast <void> (0) : __assert_fail ("CfAlu->getOpcode() == R600::CF_ALU_PUSH_BEFORE" , "/build/llvm-toolchain-snapshot-9~svn359999/lib/Target/AMDGPU/R600InstrInfo.cpp" , 826, __PRETTY_FUNCTION__)); | |||
827 | CfAlu->setDesc(get(R600::CF_ALU)); | |||
828 | break; | |||
829 | } | |||
830 | case R600::JUMP: | |||
831 | I->eraseFromParent(); | |||
832 | break; | |||
833 | } | |||
834 | I = MBB.end(); | |||
835 | ||||
836 | if (I == MBB.begin()) { | |||
837 | return 1; | |||
838 | } | |||
839 | --I; | |||
840 | switch (I->getOpcode()) { | |||
841 | // FIXME: only one case?? | |||
842 | default: | |||
843 | return 1; | |||
844 | case R600::JUMP_COND: { | |||
845 | MachineInstr *predSet = findFirstPredicateSetterFrom(MBB, I); | |||
846 | clearFlag(*predSet, 0, MO_FLAG_PUSH(1 << 4)); | |||
847 | I->eraseFromParent(); | |||
848 | MachineBasicBlock::iterator CfAlu = FindLastAluClause(MBB); | |||
849 | if (CfAlu == MBB.end()) | |||
850 | break; | |||
851 | assert (CfAlu->getOpcode() == R600::CF_ALU_PUSH_BEFORE)((CfAlu->getOpcode() == R600::CF_ALU_PUSH_BEFORE) ? static_cast <void> (0) : __assert_fail ("CfAlu->getOpcode() == R600::CF_ALU_PUSH_BEFORE" , "/build/llvm-toolchain-snapshot-9~svn359999/lib/Target/AMDGPU/R600InstrInfo.cpp" , 851, __PRETTY_FUNCTION__)); | |||
852 | CfAlu->setDesc(get(R600::CF_ALU)); | |||
853 | break; | |||
854 | } | |||
855 | case R600::JUMP: | |||
856 | I->eraseFromParent(); | |||
857 | break; | |||
858 | } | |||
859 | return 2; | |||
860 | } | |||
861 | ||||
862 | bool R600InstrInfo::isPredicated(const MachineInstr &MI) const { | |||
863 | int idx = MI.findFirstPredOperandIdx(); | |||
864 | if (idx < 0) | |||
865 | return false; | |||
866 | ||||
867 | unsigned Reg = MI.getOperand(idx).getReg(); | |||
868 | switch (Reg) { | |||
869 | default: return false; | |||
870 | case R600::PRED_SEL_ONE: | |||
871 | case R600::PRED_SEL_ZERO: | |||
872 | case R600::PREDICATE_BIT: | |||
873 | return true; | |||
874 | } | |||
875 | } | |||
876 | ||||
877 | bool R600InstrInfo::isPredicable(const MachineInstr &MI) const { | |||
878 | // XXX: KILL* instructions can be predicated, but they must be the last | |||
879 | // instruction in a clause, so this means any instructions after them cannot | |||
880 | // be predicated. Until we have proper support for instruction clauses in the | |||
881 | // backend, we will mark KILL* instructions as unpredicable. | |||
882 | ||||
883 | if (MI.getOpcode() == R600::KILLGT) { | |||
884 | return false; | |||
885 | } else if (MI.getOpcode() == R600::CF_ALU) { | |||
886 | // If the clause start in the middle of MBB then the MBB has more | |||
887 | // than a single clause, unable to predicate several clauses. | |||
888 | if (MI.getParent()->begin() != MachineBasicBlock::const_iterator(MI)) | |||
889 | return false; | |||
890 | // TODO: We don't support KC merging atm | |||
891 | return MI.getOperand(3).getImm() == 0 && MI.getOperand(4).getImm() == 0; | |||
892 | } else if (isVector(MI)) { | |||
893 | return false; | |||
894 | } else { | |||
895 | return TargetInstrInfo::isPredicable(MI); | |||
896 | } | |||
897 | } | |||
898 | ||||
899 | bool | |||
900 | R600InstrInfo::isProfitableToIfCvt(MachineBasicBlock &MBB, | |||
901 | unsigned NumCycles, | |||
902 | unsigned ExtraPredCycles, | |||
903 | BranchProbability Probability) const{ | |||
904 | return true; | |||
905 | } | |||
906 | ||||
907 | bool | |||
908 | R600InstrInfo::isProfitableToIfCvt(MachineBasicBlock &TMBB, | |||
909 | unsigned NumTCycles, | |||
910 | unsigned ExtraTCycles, | |||
911 | MachineBasicBlock &FMBB, | |||
912 | unsigned NumFCycles, | |||
913 | unsigned ExtraFCycles, | |||
914 | BranchProbability Probability) const { | |||
915 | return true; | |||
916 | } | |||
917 | ||||
918 | bool | |||
919 | R600InstrInfo::isProfitableToDupForIfCvt(MachineBasicBlock &MBB, | |||
920 | unsigned NumCycles, | |||
921 | BranchProbability Probability) | |||
922 | const { | |||
923 | return true; | |||
924 | } | |||
925 | ||||
926 | bool | |||
927 | R600InstrInfo::isProfitableToUnpredicate(MachineBasicBlock &TMBB, | |||
928 | MachineBasicBlock &FMBB) const { | |||
929 | return false; | |||
930 | } | |||
931 | ||||
932 | bool | |||
933 | R600InstrInfo::reverseBranchCondition(SmallVectorImpl<MachineOperand> &Cond) const { | |||
934 | MachineOperand &MO = Cond[1]; | |||
935 | switch (MO.getImm()) { | |||
936 | case R600::PRED_SETE_INT: | |||
937 | MO.setImm(R600::PRED_SETNE_INT); | |||
938 | break; | |||
939 | case R600::PRED_SETNE_INT: | |||
940 | MO.setImm(R600::PRED_SETE_INT); | |||
941 | break; | |||
942 | case R600::PRED_SETE: | |||
943 | MO.setImm(R600::PRED_SETNE); | |||
944 | break; | |||
945 | case R600::PRED_SETNE: | |||
946 | MO.setImm(R600::PRED_SETE); | |||
947 | break; | |||
948 | default: | |||
949 | return true; | |||
950 | } | |||
951 | ||||
952 | MachineOperand &MO2 = Cond[2]; | |||
953 | switch (MO2.getReg()) { | |||
954 | case R600::PRED_SEL_ZERO: | |||
955 | MO2.setReg(R600::PRED_SEL_ONE); | |||
956 | break; | |||
957 | case R600::PRED_SEL_ONE: | |||
958 | MO2.setReg(R600::PRED_SEL_ZERO); | |||
959 | break; | |||
960 | default: | |||
961 | return true; | |||
962 | } | |||
963 | return false; | |||
964 | } | |||
965 | ||||
966 | bool R600InstrInfo::DefinesPredicate(MachineInstr &MI, | |||
967 | std::vector<MachineOperand> &Pred) const { | |||
968 | return isPredicateSetter(MI.getOpcode()); | |||
969 | } | |||
970 | ||||
971 | bool R600InstrInfo::PredicateInstruction(MachineInstr &MI, | |||
972 | ArrayRef<MachineOperand> Pred) const { | |||
973 | int PIdx = MI.findFirstPredOperandIdx(); | |||
974 | ||||
975 | if (MI.getOpcode() == R600::CF_ALU) { | |||
976 | MI.getOperand(8).setImm(0); | |||
977 | return true; | |||
978 | } | |||
979 | ||||
980 | if (MI.getOpcode() == R600::DOT_4) { | |||
981 | MI.getOperand(getOperandIdx(MI, R600::OpName::pred_sel_X)) | |||
982 | .setReg(Pred[2].getReg()); | |||
983 | MI.getOperand(getOperandIdx(MI, R600::OpName::pred_sel_Y)) | |||
984 | .setReg(Pred[2].getReg()); | |||
985 | MI.getOperand(getOperandIdx(MI, R600::OpName::pred_sel_Z)) | |||
986 | .setReg(Pred[2].getReg()); | |||
987 | MI.getOperand(getOperandIdx(MI, R600::OpName::pred_sel_W)) | |||
988 | .setReg(Pred[2].getReg()); | |||
989 | MachineInstrBuilder MIB(*MI.getParent()->getParent(), MI); | |||
990 | MIB.addReg(R600::PREDICATE_BIT, RegState::Implicit); | |||
991 | return true; | |||
992 | } | |||
993 | ||||
994 | if (PIdx != -1) { | |||
995 | MachineOperand &PMO = MI.getOperand(PIdx); | |||
996 | PMO.setReg(Pred[2].getReg()); | |||
997 | MachineInstrBuilder MIB(*MI.getParent()->getParent(), MI); | |||
998 | MIB.addReg(R600::PREDICATE_BIT, RegState::Implicit); | |||
999 | return true; | |||
1000 | } | |||
1001 | ||||
1002 | return false; | |||
1003 | } | |||
1004 | ||||
1005 | unsigned int R600InstrInfo::getPredicationCost(const MachineInstr &) const { | |||
1006 | return 2; | |||
1007 | } | |||
1008 | ||||
1009 | unsigned int R600InstrInfo::getInstrLatency(const InstrItineraryData *ItinData, | |||
1010 | const MachineInstr &, | |||
1011 | unsigned *PredCost) const { | |||
1012 | if (PredCost) | |||
1013 | *PredCost = 2; | |||
1014 | return 2; | |||
1015 | } | |||
1016 | ||||
1017 | unsigned R600InstrInfo::calculateIndirectAddress(unsigned RegIndex, | |||
1018 | unsigned Channel) const { | |||
1019 | assert(Channel == 0)((Channel == 0) ? static_cast<void> (0) : __assert_fail ("Channel == 0", "/build/llvm-toolchain-snapshot-9~svn359999/lib/Target/AMDGPU/R600InstrInfo.cpp" , 1019, __PRETTY_FUNCTION__)); | |||
1020 | return RegIndex; | |||
1021 | } | |||
1022 | ||||
1023 | bool R600InstrInfo::expandPostRAPseudo(MachineInstr &MI) const { | |||
1024 | switch (MI.getOpcode()) { | |||
1025 | default: { | |||
1026 | MachineBasicBlock *MBB = MI.getParent(); | |||
1027 | int OffsetOpIdx = | |||
1028 | R600::getNamedOperandIdx(MI.getOpcode(), R600::OpName::addr); | |||
1029 | // addr is a custom operand with multiple MI operands, and only the | |||
1030 | // first MI operand is given a name. | |||
1031 | int RegOpIdx = OffsetOpIdx + 1; | |||
1032 | int ChanOpIdx = | |||
1033 | R600::getNamedOperandIdx(MI.getOpcode(), R600::OpName::chan); | |||
1034 | if (isRegisterLoad(MI)) { | |||
1035 | int DstOpIdx = | |||
1036 | R600::getNamedOperandIdx(MI.getOpcode(), R600::OpName::dst); | |||
1037 | unsigned RegIndex = MI.getOperand(RegOpIdx).getImm(); | |||
1038 | unsigned Channel = MI.getOperand(ChanOpIdx).getImm(); | |||
1039 | unsigned Address = calculateIndirectAddress(RegIndex, Channel); | |||
1040 | unsigned OffsetReg = MI.getOperand(OffsetOpIdx).getReg(); | |||
1041 | if (OffsetReg == R600::INDIRECT_BASE_ADDR) { | |||
1042 | buildMovInstr(MBB, MI, MI.getOperand(DstOpIdx).getReg(), | |||
1043 | getIndirectAddrRegClass()->getRegister(Address)); | |||
1044 | } else { | |||
1045 | buildIndirectRead(MBB, MI, MI.getOperand(DstOpIdx).getReg(), Address, | |||
1046 | OffsetReg); | |||
1047 | } | |||
1048 | } else if (isRegisterStore(MI)) { | |||
1049 | int ValOpIdx = | |||
1050 | R600::getNamedOperandIdx(MI.getOpcode(), R600::OpName::val); | |||
1051 | unsigned RegIndex = MI.getOperand(RegOpIdx).getImm(); | |||
1052 | unsigned Channel = MI.getOperand(ChanOpIdx).getImm(); | |||
1053 | unsigned Address = calculateIndirectAddress(RegIndex, Channel); | |||
1054 | unsigned OffsetReg = MI.getOperand(OffsetOpIdx).getReg(); | |||
1055 | if (OffsetReg == R600::INDIRECT_BASE_ADDR) { | |||
1056 | buildMovInstr(MBB, MI, getIndirectAddrRegClass()->getRegister(Address), | |||
1057 | MI.getOperand(ValOpIdx).getReg()); | |||
1058 | } else { | |||
1059 | buildIndirectWrite(MBB, MI, MI.getOperand(ValOpIdx).getReg(), | |||
1060 | calculateIndirectAddress(RegIndex, Channel), | |||
1061 | OffsetReg); | |||
1062 | } | |||
1063 | } else { | |||
1064 | return false; | |||
1065 | } | |||
1066 | ||||
1067 | MBB->erase(MI); | |||
1068 | return true; | |||
1069 | } | |||
1070 | case R600::R600_EXTRACT_ELT_V2: | |||
1071 | case R600::R600_EXTRACT_ELT_V4: | |||
1072 | buildIndirectRead(MI.getParent(), MI, MI.getOperand(0).getReg(), | |||
1073 | RI.getHWRegIndex(MI.getOperand(1).getReg()), // Address | |||
1074 | MI.getOperand(2).getReg(), | |||
1075 | RI.getHWRegChan(MI.getOperand(1).getReg())); | |||
1076 | break; | |||
1077 | case R600::R600_INSERT_ELT_V2: | |||
1078 | case R600::R600_INSERT_ELT_V4: | |||
1079 | buildIndirectWrite(MI.getParent(), MI, MI.getOperand(2).getReg(), // Value | |||
1080 | RI.getHWRegIndex(MI.getOperand(1).getReg()), // Address | |||
1081 | MI.getOperand(3).getReg(), // Offset | |||
1082 | RI.getHWRegChan(MI.getOperand(1).getReg())); // Channel | |||
1083 | break; | |||
1084 | } | |||
1085 | MI.eraseFromParent(); | |||
1086 | return true; | |||
1087 | } | |||
1088 | ||||
1089 | void R600InstrInfo::reserveIndirectRegisters(BitVector &Reserved, | |||
1090 | const MachineFunction &MF, | |||
1091 | const R600RegisterInfo &TRI) const { | |||
1092 | const R600Subtarget &ST = MF.getSubtarget<R600Subtarget>(); | |||
1093 | const R600FrameLowering *TFL = ST.getFrameLowering(); | |||
1094 | ||||
1095 | unsigned StackWidth = TFL->getStackWidth(MF); | |||
1096 | int End = getIndirectIndexEnd(MF); | |||
1097 | ||||
1098 | if (End == -1) | |||
1099 | return; | |||
1100 | ||||
1101 | for (int Index = getIndirectIndexBegin(MF); Index <= End; ++Index) { | |||
1102 | for (unsigned Chan = 0; Chan < StackWidth; ++Chan) { | |||
1103 | unsigned Reg = R600::R600_TReg32RegClass.getRegister((4 * Index) + Chan); | |||
1104 | TRI.reserveRegisterTuples(Reserved, Reg); | |||
1105 | } | |||
1106 | } | |||
1107 | } | |||
1108 | ||||
1109 | const TargetRegisterClass *R600InstrInfo::getIndirectAddrRegClass() const { | |||
1110 | return &R600::R600_TReg32_XRegClass; | |||
1111 | } | |||
1112 | ||||
1113 | MachineInstrBuilder R600InstrInfo::buildIndirectWrite(MachineBasicBlock *MBB, | |||
1114 | MachineBasicBlock::iterator I, | |||
1115 | unsigned ValueReg, unsigned Address, | |||
1116 | unsigned OffsetReg) const { | |||
1117 | return buildIndirectWrite(MBB, I, ValueReg, Address, OffsetReg, 0); | |||
1118 | } | |||
1119 | ||||
1120 | MachineInstrBuilder R600InstrInfo::buildIndirectWrite(MachineBasicBlock *MBB, | |||
1121 | MachineBasicBlock::iterator I, | |||
1122 | unsigned ValueReg, unsigned Address, | |||
1123 | unsigned OffsetReg, | |||
1124 | unsigned AddrChan) const { | |||
1125 | unsigned AddrReg; | |||
1126 | switch (AddrChan) { | |||
1127 | default: llvm_unreachable("Invalid Channel")::llvm::llvm_unreachable_internal("Invalid Channel", "/build/llvm-toolchain-snapshot-9~svn359999/lib/Target/AMDGPU/R600InstrInfo.cpp" , 1127); | |||
1128 | case 0: AddrReg = R600::R600_AddrRegClass.getRegister(Address); break; | |||
1129 | case 1: AddrReg = R600::R600_Addr_YRegClass.getRegister(Address); break; | |||
1130 | case 2: AddrReg = R600::R600_Addr_ZRegClass.getRegister(Address); break; | |||
1131 | case 3: AddrReg = R600::R600_Addr_WRegClass.getRegister(Address); break; | |||
1132 | } | |||
1133 | MachineInstr *MOVA = buildDefaultInstruction(*MBB, I, R600::MOVA_INT_eg, | |||
1134 | R600::AR_X, OffsetReg); | |||
1135 | setImmOperand(*MOVA, R600::OpName::write, 0); | |||
1136 | ||||
1137 | MachineInstrBuilder Mov = buildDefaultInstruction(*MBB, I, R600::MOV, | |||
1138 | AddrReg, ValueReg) | |||
1139 | .addReg(R600::AR_X, | |||
1140 | RegState::Implicit | RegState::Kill); | |||
1141 | setImmOperand(*Mov, R600::OpName::dst_rel, 1); | |||
1142 | return Mov; | |||
1143 | } | |||
1144 | ||||
1145 | MachineInstrBuilder R600InstrInfo::buildIndirectRead(MachineBasicBlock *MBB, | |||
1146 | MachineBasicBlock::iterator I, | |||
1147 | unsigned ValueReg, unsigned Address, | |||
1148 | unsigned OffsetReg) const { | |||
1149 | return buildIndirectRead(MBB, I, ValueReg, Address, OffsetReg, 0); | |||
1150 | } | |||
1151 | ||||
1152 | MachineInstrBuilder R600InstrInfo::buildIndirectRead(MachineBasicBlock *MBB, | |||
1153 | MachineBasicBlock::iterator I, | |||
1154 | unsigned ValueReg, unsigned Address, | |||
1155 | unsigned OffsetReg, | |||
1156 | unsigned AddrChan) const { | |||
1157 | unsigned AddrReg; | |||
1158 | switch (AddrChan) { | |||
1159 | default: llvm_unreachable("Invalid Channel")::llvm::llvm_unreachable_internal("Invalid Channel", "/build/llvm-toolchain-snapshot-9~svn359999/lib/Target/AMDGPU/R600InstrInfo.cpp" , 1159); | |||
1160 | case 0: AddrReg = R600::R600_AddrRegClass.getRegister(Address); break; | |||
1161 | case 1: AddrReg = R600::R600_Addr_YRegClass.getRegister(Address); break; | |||
1162 | case 2: AddrReg = R600::R600_Addr_ZRegClass.getRegister(Address); break; | |||
1163 | case 3: AddrReg = R600::R600_Addr_WRegClass.getRegister(Address); break; | |||
1164 | } | |||
1165 | MachineInstr *MOVA = buildDefaultInstruction(*MBB, I, R600::MOVA_INT_eg, | |||
1166 | R600::AR_X, | |||
1167 | OffsetReg); | |||
1168 | setImmOperand(*MOVA, R600::OpName::write, 0); | |||
1169 | MachineInstrBuilder Mov = buildDefaultInstruction(*MBB, I, R600::MOV, | |||
1170 | ValueReg, | |||
1171 | AddrReg) | |||
1172 | .addReg(R600::AR_X, | |||
1173 | RegState::Implicit | RegState::Kill); | |||
1174 | setImmOperand(*Mov, R600::OpName::src0_rel, 1); | |||
1175 | ||||
1176 | return Mov; | |||
1177 | } | |||
1178 | ||||
1179 | int R600InstrInfo::getIndirectIndexBegin(const MachineFunction &MF) const { | |||
1180 | const MachineRegisterInfo &MRI = MF.getRegInfo(); | |||
1181 | const MachineFrameInfo &MFI = MF.getFrameInfo(); | |||
1182 | int Offset = -1; | |||
1183 | ||||
1184 | if (MFI.getNumObjects() == 0) { | |||
1185 | return -1; | |||
1186 | } | |||
1187 | ||||
1188 | if (MRI.livein_empty()) { | |||
1189 | return 0; | |||
1190 | } | |||
1191 | ||||
1192 | const TargetRegisterClass *IndirectRC = getIndirectAddrRegClass(); | |||
1193 | for (std::pair<unsigned, unsigned> LI : MRI.liveins()) { | |||
1194 | unsigned Reg = LI.first; | |||
1195 | if (TargetRegisterInfo::isVirtualRegister(Reg) || | |||
1196 | !IndirectRC->contains(Reg)) | |||
1197 | continue; | |||
1198 | ||||
1199 | unsigned RegIndex; | |||
1200 | unsigned RegEnd; | |||
1201 | for (RegIndex = 0, RegEnd = IndirectRC->getNumRegs(); RegIndex != RegEnd; | |||
1202 | ++RegIndex) { | |||
1203 | if (IndirectRC->getRegister(RegIndex) == Reg) | |||
1204 | break; | |||
1205 | } | |||
1206 | Offset = std::max(Offset, (int)RegIndex); | |||
1207 | } | |||
1208 | ||||
1209 | return Offset + 1; | |||
1210 | } | |||
1211 | ||||
1212 | int R600InstrInfo::getIndirectIndexEnd(const MachineFunction &MF) const { | |||
1213 | int Offset = 0; | |||
1214 | const MachineFrameInfo &MFI = MF.getFrameInfo(); | |||
1215 | ||||
1216 | // Variable sized objects are not supported | |||
1217 | if (MFI.hasVarSizedObjects()) { | |||
1218 | return -1; | |||
1219 | } | |||
1220 | ||||
1221 | if (MFI.getNumObjects() == 0) { | |||
1222 | return -1; | |||
1223 | } | |||
1224 | ||||
1225 | const R600Subtarget &ST = MF.getSubtarget<R600Subtarget>(); | |||
1226 | const R600FrameLowering *TFL = ST.getFrameLowering(); | |||
1227 | ||||
1228 | unsigned IgnoredFrameReg; | |||
1229 | Offset = TFL->getFrameIndexReference(MF, -1, IgnoredFrameReg); | |||
1230 | ||||
1231 | return getIndirectIndexBegin(MF) + Offset; | |||
1232 | } | |||
1233 | ||||
1234 | unsigned R600InstrInfo::getMaxAlusPerClause() const { | |||
1235 | return 115; | |||
1236 | } | |||
1237 | ||||
1238 | MachineInstrBuilder R600InstrInfo::buildDefaultInstruction(MachineBasicBlock &MBB, | |||
1239 | MachineBasicBlock::iterator I, | |||
1240 | unsigned Opcode, | |||
1241 | unsigned DstReg, | |||
1242 | unsigned Src0Reg, | |||
1243 | unsigned Src1Reg) const { | |||
1244 | MachineInstrBuilder MIB = BuildMI(MBB, I, MBB.findDebugLoc(I), get(Opcode), | |||
1245 | DstReg); // $dst | |||
1246 | ||||
1247 | if (Src1Reg) { | |||
1248 | MIB.addImm(0) // $update_exec_mask | |||
1249 | .addImm(0); // $update_predicate | |||
1250 | } | |||
1251 | MIB.addImm(1) // $write | |||
1252 | .addImm(0) // $omod | |||
1253 | .addImm(0) // $dst_rel | |||
1254 | .addImm(0) // $dst_clamp | |||
1255 | .addReg(Src0Reg) // $src0 | |||
1256 | .addImm(0) // $src0_neg | |||
1257 | .addImm(0) // $src0_rel | |||
1258 | .addImm(0) // $src0_abs | |||
1259 | .addImm(-1); // $src0_sel | |||
1260 | ||||
1261 | if (Src1Reg) { | |||
1262 | MIB.addReg(Src1Reg) // $src1 | |||
1263 | .addImm(0) // $src1_neg | |||
1264 | .addImm(0) // $src1_rel | |||
1265 | .addImm(0) // $src1_abs | |||
1266 | .addImm(-1); // $src1_sel | |||
1267 | } | |||
1268 | ||||
1269 | //XXX: The r600g finalizer expects this to be 1, once we've moved the | |||
1270 | //scheduling to the backend, we can change the default to 0. | |||
1271 | MIB.addImm(1) // $last | |||
1272 | .addReg(R600::PRED_SEL_OFF) // $pred_sel | |||
1273 | .addImm(0) // $literal | |||
1274 | .addImm(0); // $bank_swizzle | |||
1275 | ||||
1276 | return MIB; | |||
1277 | } | |||
1278 | ||||
1279 | #define OPERAND_CASE(Label) \ | |||
1280 | case Label: { \ | |||
1281 | static const unsigned Ops[] = \ | |||
1282 | { \ | |||
1283 | Label##_X, \ | |||
1284 | Label##_Y, \ | |||
1285 | Label##_Z, \ | |||
1286 | Label##_W \ | |||
1287 | }; \ | |||
1288 | return Ops[Slot]; \ | |||
1289 | } | |||
1290 | ||||
1291 | static unsigned getSlotedOps(unsigned Op, unsigned Slot) { | |||
1292 | switch (Op) { | |||
1293 | OPERAND_CASE(R600::OpName::update_exec_mask) | |||
1294 | OPERAND_CASE(R600::OpName::update_pred) | |||
1295 | OPERAND_CASE(R600::OpName::write) | |||
1296 | OPERAND_CASE(R600::OpName::omod) | |||
1297 | OPERAND_CASE(R600::OpName::dst_rel) | |||
1298 | OPERAND_CASE(R600::OpName::clamp) | |||
1299 | OPERAND_CASE(R600::OpName::src0) | |||
1300 | OPERAND_CASE(R600::OpName::src0_neg) | |||
1301 | OPERAND_CASE(R600::OpName::src0_rel) | |||
1302 | OPERAND_CASE(R600::OpName::src0_abs) | |||
1303 | OPERAND_CASE(R600::OpName::src0_sel) | |||
1304 | OPERAND_CASE(R600::OpName::src1) | |||
1305 | OPERAND_CASE(R600::OpName::src1_neg) | |||
1306 | OPERAND_CASE(R600::OpName::src1_rel) | |||
1307 | OPERAND_CASE(R600::OpName::src1_abs) | |||
1308 | OPERAND_CASE(R600::OpName::src1_sel) | |||
1309 | OPERAND_CASE(R600::OpName::pred_sel) | |||
1310 | default: | |||
1311 | llvm_unreachable("Wrong Operand")::llvm::llvm_unreachable_internal("Wrong Operand", "/build/llvm-toolchain-snapshot-9~svn359999/lib/Target/AMDGPU/R600InstrInfo.cpp" , 1311); | |||
1312 | } | |||
1313 | } | |||
1314 | ||||
1315 | #undef OPERAND_CASE | |||
1316 | ||||
1317 | MachineInstr *R600InstrInfo::buildSlotOfVectorInstruction( | |||
1318 | MachineBasicBlock &MBB, MachineInstr *MI, unsigned Slot, unsigned DstReg) | |||
1319 | const { | |||
1320 | assert (MI->getOpcode() == R600::DOT_4 && "Not Implemented")((MI->getOpcode() == R600::DOT_4 && "Not Implemented" ) ? static_cast<void> (0) : __assert_fail ("MI->getOpcode() == R600::DOT_4 && \"Not Implemented\"" , "/build/llvm-toolchain-snapshot-9~svn359999/lib/Target/AMDGPU/R600InstrInfo.cpp" , 1320, __PRETTY_FUNCTION__)); | |||
1321 | unsigned Opcode; | |||
1322 | if (ST.getGeneration() <= AMDGPUSubtarget::R700) | |||
1323 | Opcode = R600::DOT4_r600; | |||
1324 | else | |||
1325 | Opcode = R600::DOT4_eg; | |||
1326 | MachineBasicBlock::iterator I = MI; | |||
1327 | MachineOperand &Src0 = MI->getOperand( | |||
1328 | getOperandIdx(MI->getOpcode(), getSlotedOps(R600::OpName::src0, Slot))); | |||
1329 | MachineOperand &Src1 = MI->getOperand( | |||
1330 | getOperandIdx(MI->getOpcode(), getSlotedOps(R600::OpName::src1, Slot))); | |||
1331 | MachineInstr *MIB = buildDefaultInstruction( | |||
1332 | MBB, I, Opcode, DstReg, Src0.getReg(), Src1.getReg()); | |||
1333 | static const unsigned Operands[14] = { | |||
1334 | R600::OpName::update_exec_mask, | |||
1335 | R600::OpName::update_pred, | |||
1336 | R600::OpName::write, | |||
1337 | R600::OpName::omod, | |||
1338 | R600::OpName::dst_rel, | |||
1339 | R600::OpName::clamp, | |||
1340 | R600::OpName::src0_neg, | |||
1341 | R600::OpName::src0_rel, | |||
1342 | R600::OpName::src0_abs, | |||
1343 | R600::OpName::src0_sel, | |||
1344 | R600::OpName::src1_neg, | |||
1345 | R600::OpName::src1_rel, | |||
1346 | R600::OpName::src1_abs, | |||
1347 | R600::OpName::src1_sel, | |||
1348 | }; | |||
1349 | ||||
1350 | MachineOperand &MO = MI->getOperand(getOperandIdx(MI->getOpcode(), | |||
1351 | getSlotedOps(R600::OpName::pred_sel, Slot))); | |||
1352 | MIB->getOperand(getOperandIdx(Opcode, R600::OpName::pred_sel)) | |||
1353 | .setReg(MO.getReg()); | |||
1354 | ||||
1355 | for (unsigned i = 0; i < 14; i++) { | |||
1356 | MachineOperand &MO = MI->getOperand( | |||
1357 | getOperandIdx(MI->getOpcode(), getSlotedOps(Operands[i], Slot))); | |||
1358 | assert (MO.isImm())((MO.isImm()) ? static_cast<void> (0) : __assert_fail ( "MO.isImm()", "/build/llvm-toolchain-snapshot-9~svn359999/lib/Target/AMDGPU/R600InstrInfo.cpp" , 1358, __PRETTY_FUNCTION__)); | |||
1359 | setImmOperand(*MIB, Operands[i], MO.getImm()); | |||
1360 | } | |||
1361 | MIB->getOperand(20).setImm(0); | |||
1362 | return MIB; | |||
1363 | } | |||
1364 | ||||
1365 | MachineInstr *R600InstrInfo::buildMovImm(MachineBasicBlock &BB, | |||
1366 | MachineBasicBlock::iterator I, | |||
1367 | unsigned DstReg, | |||
1368 | uint64_t Imm) const { | |||
1369 | MachineInstr *MovImm = buildDefaultInstruction(BB, I, R600::MOV, DstReg, | |||
1370 | R600::ALU_LITERAL_X); | |||
1371 | setImmOperand(*MovImm, R600::OpName::literal, Imm); | |||
1372 | return MovImm; | |||
1373 | } | |||
1374 | ||||
1375 | MachineInstr *R600InstrInfo::buildMovInstr(MachineBasicBlock *MBB, | |||
1376 | MachineBasicBlock::iterator I, | |||
1377 | unsigned DstReg, unsigned SrcReg) const { | |||
1378 | return buildDefaultInstruction(*MBB, I, R600::MOV, DstReg, SrcReg); | |||
1379 | } | |||
1380 | ||||
1381 | int R600InstrInfo::getOperandIdx(const MachineInstr &MI, unsigned Op) const { | |||
1382 | return getOperandIdx(MI.getOpcode(), Op); | |||
1383 | } | |||
1384 | ||||
1385 | int R600InstrInfo::getOperandIdx(unsigned Opcode, unsigned Op) const { | |||
1386 | return R600::getNamedOperandIdx(Opcode, Op); | |||
1387 | } | |||
1388 | ||||
1389 | void R600InstrInfo::setImmOperand(MachineInstr &MI, unsigned Op, | |||
1390 | int64_t Imm) const { | |||
1391 | int Idx = getOperandIdx(MI, Op); | |||
1392 | assert(Idx != -1 && "Operand not supported for this instruction.")((Idx != -1 && "Operand not supported for this instruction." ) ? static_cast<void> (0) : __assert_fail ("Idx != -1 && \"Operand not supported for this instruction.\"" , "/build/llvm-toolchain-snapshot-9~svn359999/lib/Target/AMDGPU/R600InstrInfo.cpp" , 1392, __PRETTY_FUNCTION__)); | |||
1393 | assert(MI.getOperand(Idx).isImm())((MI.getOperand(Idx).isImm()) ? static_cast<void> (0) : __assert_fail ("MI.getOperand(Idx).isImm()", "/build/llvm-toolchain-snapshot-9~svn359999/lib/Target/AMDGPU/R600InstrInfo.cpp" , 1393, __PRETTY_FUNCTION__)); | |||
1394 | MI.getOperand(Idx).setImm(Imm); | |||
1395 | } | |||
1396 | ||||
1397 | //===----------------------------------------------------------------------===// | |||
1398 | // Instruction flag getters/setters | |||
1399 | //===----------------------------------------------------------------------===// | |||
1400 | ||||
1401 | MachineOperand &R600InstrInfo::getFlagOp(MachineInstr &MI, unsigned SrcIdx, | |||
1402 | unsigned Flag) const { | |||
1403 | unsigned TargetFlags = get(MI.getOpcode()).TSFlags; | |||
1404 | int FlagIndex = 0; | |||
1405 | if (Flag != 0) { | |||
1406 | // If we pass something other than the default value of Flag to this | |||
1407 | // function, it means we are want to set a flag on an instruction | |||
1408 | // that uses native encoding. | |||
1409 | assert(HAS_NATIVE_OPERANDS(TargetFlags))((((TargetFlags) & R600_InstFlag::NATIVE_OPERANDS)) ? static_cast <void> (0) : __assert_fail ("HAS_NATIVE_OPERANDS(TargetFlags)" , "/build/llvm-toolchain-snapshot-9~svn359999/lib/Target/AMDGPU/R600InstrInfo.cpp" , 1409, __PRETTY_FUNCTION__)); | |||
1410 | bool IsOP3 = (TargetFlags & R600_InstFlag::OP3) == R600_InstFlag::OP3; | |||
1411 | switch (Flag) { | |||
1412 | case MO_FLAG_CLAMP(1 << 0): | |||
1413 | FlagIndex = getOperandIdx(MI, R600::OpName::clamp); | |||
1414 | break; | |||
1415 | case MO_FLAG_MASK(1 << 3): | |||
1416 | FlagIndex = getOperandIdx(MI, R600::OpName::write); | |||
1417 | break; | |||
1418 | case MO_FLAG_NOT_LAST(1 << 5): | |||
1419 | case MO_FLAG_LAST(1 << 6): | |||
1420 | FlagIndex = getOperandIdx(MI, R600::OpName::last); | |||
1421 | break; | |||
1422 | case MO_FLAG_NEG(1 << 1): | |||
1423 | switch (SrcIdx) { | |||
1424 | case 0: | |||
1425 | FlagIndex = getOperandIdx(MI, R600::OpName::src0_neg); | |||
1426 | break; | |||
1427 | case 1: | |||
1428 | FlagIndex = getOperandIdx(MI, R600::OpName::src1_neg); | |||
1429 | break; | |||
1430 | case 2: | |||
1431 | FlagIndex = getOperandIdx(MI, R600::OpName::src2_neg); | |||
1432 | break; | |||
1433 | } | |||
1434 | break; | |||
1435 | ||||
1436 | case MO_FLAG_ABS(1 << 2): | |||
1437 | assert(!IsOP3 && "Cannot set absolute value modifier for OP3 "((!IsOP3 && "Cannot set absolute value modifier for OP3 " "instructions.") ? static_cast<void> (0) : __assert_fail ("!IsOP3 && \"Cannot set absolute value modifier for OP3 \" \"instructions.\"" , "/build/llvm-toolchain-snapshot-9~svn359999/lib/Target/AMDGPU/R600InstrInfo.cpp" , 1438, __PRETTY_FUNCTION__)) | |||
1438 | "instructions.")((!IsOP3 && "Cannot set absolute value modifier for OP3 " "instructions.") ? static_cast<void> (0) : __assert_fail ("!IsOP3 && \"Cannot set absolute value modifier for OP3 \" \"instructions.\"" , "/build/llvm-toolchain-snapshot-9~svn359999/lib/Target/AMDGPU/R600InstrInfo.cpp" , 1438, __PRETTY_FUNCTION__)); | |||
1439 | (void)IsOP3; | |||
1440 | switch (SrcIdx) { | |||
1441 | case 0: | |||
1442 | FlagIndex = getOperandIdx(MI, R600::OpName::src0_abs); | |||
1443 | break; | |||
1444 | case 1: | |||
1445 | FlagIndex = getOperandIdx(MI, R600::OpName::src1_abs); | |||
1446 | break; | |||
1447 | } | |||
1448 | break; | |||
1449 | ||||
1450 | default: | |||
1451 | FlagIndex = -1; | |||
1452 | break; | |||
1453 | } | |||
1454 | assert(FlagIndex != -1 && "Flag not supported for this instruction")((FlagIndex != -1 && "Flag not supported for this instruction" ) ? static_cast<void> (0) : __assert_fail ("FlagIndex != -1 && \"Flag not supported for this instruction\"" , "/build/llvm-toolchain-snapshot-9~svn359999/lib/Target/AMDGPU/R600InstrInfo.cpp" , 1454, __PRETTY_FUNCTION__)); | |||
1455 | } else { | |||
1456 | FlagIndex = GET_FLAG_OPERAND_IDX(TargetFlags)(((TargetFlags) >> 7) & 0x3); | |||
1457 | assert(FlagIndex != 0 &&((FlagIndex != 0 && "Instruction flags not supported for this instruction" ) ? static_cast<void> (0) : __assert_fail ("FlagIndex != 0 && \"Instruction flags not supported for this instruction\"" , "/build/llvm-toolchain-snapshot-9~svn359999/lib/Target/AMDGPU/R600InstrInfo.cpp" , 1458, __PRETTY_FUNCTION__)) | |||
1458 | "Instruction flags not supported for this instruction")((FlagIndex != 0 && "Instruction flags not supported for this instruction" ) ? static_cast<void> (0) : __assert_fail ("FlagIndex != 0 && \"Instruction flags not supported for this instruction\"" , "/build/llvm-toolchain-snapshot-9~svn359999/lib/Target/AMDGPU/R600InstrInfo.cpp" , 1458, __PRETTY_FUNCTION__)); | |||
1459 | } | |||
1460 | ||||
1461 | MachineOperand &FlagOp = MI.getOperand(FlagIndex); | |||
1462 | assert(FlagOp.isImm())((FlagOp.isImm()) ? static_cast<void> (0) : __assert_fail ("FlagOp.isImm()", "/build/llvm-toolchain-snapshot-9~svn359999/lib/Target/AMDGPU/R600InstrInfo.cpp" , 1462, __PRETTY_FUNCTION__)); | |||
1463 | return FlagOp; | |||
1464 | } | |||
1465 | ||||
1466 | void R600InstrInfo::addFlag(MachineInstr &MI, unsigned Operand, | |||
1467 | unsigned Flag) const { | |||
1468 | unsigned TargetFlags = get(MI.getOpcode()).TSFlags; | |||
1469 | if (Flag == 0) { | |||
1470 | return; | |||
1471 | } | |||
1472 | if (HAS_NATIVE_OPERANDS(TargetFlags)((TargetFlags) & R600_InstFlag::NATIVE_OPERANDS)) { | |||
1473 | MachineOperand &FlagOp = getFlagOp(MI, Operand, Flag); | |||
1474 | if (Flag == MO_FLAG_NOT_LAST(1 << 5)) { | |||
1475 | clearFlag(MI, Operand, MO_FLAG_LAST(1 << 6)); | |||
1476 | } else if (Flag == MO_FLAG_MASK(1 << 3)) { | |||
1477 | clearFlag(MI, Operand, Flag); | |||
1478 | } else { | |||
1479 | FlagOp.setImm(1); | |||
1480 | } | |||
1481 | } else { | |||
1482 | MachineOperand &FlagOp = getFlagOp(MI, Operand); | |||
1483 | FlagOp.setImm(FlagOp.getImm() | (Flag << (NUM_MO_FLAGS7 * Operand))); | |||
1484 | } | |||
1485 | } | |||
1486 | ||||
1487 | void R600InstrInfo::clearFlag(MachineInstr &MI, unsigned Operand, | |||
1488 | unsigned Flag) const { | |||
1489 | unsigned TargetFlags = get(MI.getOpcode()).TSFlags; | |||
1490 | if (HAS_NATIVE_OPERANDS(TargetFlags)((TargetFlags) & R600_InstFlag::NATIVE_OPERANDS)) { | |||
1491 | MachineOperand &FlagOp = getFlagOp(MI, Operand, Flag); | |||
1492 | FlagOp.setImm(0); | |||
1493 | } else { | |||
1494 | MachineOperand &FlagOp = getFlagOp(MI); | |||
1495 | unsigned InstFlags = FlagOp.getImm(); | |||
1496 | InstFlags &= ~(Flag << (NUM_MO_FLAGS7 * Operand)); | |||
1497 | FlagOp.setImm(InstFlags); | |||
1498 | } | |||
1499 | } | |||
1500 | ||||
1501 | unsigned R600InstrInfo::getAddressSpaceForPseudoSourceKind( | |||
1502 | unsigned Kind) const { | |||
1503 | switch (Kind) { | |||
1504 | case PseudoSourceValue::Stack: | |||
1505 | case PseudoSourceValue::FixedStack: | |||
1506 | return AMDGPUAS::PRIVATE_ADDRESS; | |||
1507 | case PseudoSourceValue::ConstantPool: | |||
1508 | case PseudoSourceValue::GOT: | |||
1509 | case PseudoSourceValue::JumpTable: | |||
1510 | case PseudoSourceValue::GlobalValueCallEntry: | |||
1511 | case PseudoSourceValue::ExternalSymbolCallEntry: | |||
1512 | case PseudoSourceValue::TargetCustom: | |||
1513 | return AMDGPUAS::CONSTANT_ADDRESS; | |||
1514 | } | |||
1515 | ||||
1516 | llvm_unreachable("Invalid pseudo source kind")::llvm::llvm_unreachable_internal("Invalid pseudo source kind" , "/build/llvm-toolchain-snapshot-9~svn359999/lib/Target/AMDGPU/R600InstrInfo.cpp" , 1516); | |||
1517 | } |