Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1 | // Copyright 2014 the V8 project authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
| 5 | #include "src/compiler/code-generator.h" |
| 6 | |
| 7 | #include "src/arm/macro-assembler-arm.h" |
| 8 | #include "src/compiler/code-generator-impl.h" |
| 9 | #include "src/compiler/gap-resolver.h" |
| 10 | #include "src/compiler/node-matchers.h" |
| 11 | #include "src/compiler/node-properties-inl.h" |
| 12 | #include "src/scopes.h" |
| 13 | |
| 14 | namespace v8 { |
| 15 | namespace internal { |
| 16 | namespace compiler { |
| 17 | |
| 18 | #define __ masm()-> |
| 19 | |
| 20 | |
| 21 | #define kScratchReg r9 |
| 22 | |
| 23 | |
| 24 | // Adds Arm-specific methods to convert InstructionOperands. |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 25 | class ArmOperandConverter FINAL : public InstructionOperandConverter { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 26 | public: |
| 27 | ArmOperandConverter(CodeGenerator* gen, Instruction* instr) |
| 28 | : InstructionOperandConverter(gen, instr) {} |
| 29 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 30 | SwVfpRegister OutputFloat32Register(int index = 0) { |
| 31 | return ToFloat32Register(instr_->OutputAt(index)); |
| 32 | } |
| 33 | |
| 34 | SwVfpRegister InputFloat32Register(int index) { |
| 35 | return ToFloat32Register(instr_->InputAt(index)); |
| 36 | } |
| 37 | |
| 38 | SwVfpRegister ToFloat32Register(InstructionOperand* op) { |
| 39 | return ToFloat64Register(op).low(); |
| 40 | } |
| 41 | |
| 42 | LowDwVfpRegister OutputFloat64Register(int index = 0) { |
| 43 | return ToFloat64Register(instr_->OutputAt(index)); |
| 44 | } |
| 45 | |
| 46 | LowDwVfpRegister InputFloat64Register(int index) { |
| 47 | return ToFloat64Register(instr_->InputAt(index)); |
| 48 | } |
| 49 | |
| 50 | LowDwVfpRegister ToFloat64Register(InstructionOperand* op) { |
| 51 | return LowDwVfpRegister::from_code(ToDoubleRegister(op).code()); |
| 52 | } |
| 53 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 54 | SBit OutputSBit() const { |
| 55 | switch (instr_->flags_mode()) { |
| 56 | case kFlags_branch: |
| 57 | case kFlags_set: |
| 58 | return SetCC; |
| 59 | case kFlags_none: |
| 60 | return LeaveCC; |
| 61 | } |
| 62 | UNREACHABLE(); |
| 63 | return LeaveCC; |
| 64 | } |
| 65 | |
| 66 | Operand InputImmediate(int index) { |
| 67 | Constant constant = ToConstant(instr_->InputAt(index)); |
| 68 | switch (constant.type()) { |
| 69 | case Constant::kInt32: |
| 70 | return Operand(constant.ToInt32()); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 71 | case Constant::kFloat32: |
| 72 | return Operand( |
| 73 | isolate()->factory()->NewNumber(constant.ToFloat32(), TENURED)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 74 | case Constant::kFloat64: |
| 75 | return Operand( |
| 76 | isolate()->factory()->NewNumber(constant.ToFloat64(), TENURED)); |
| 77 | case Constant::kInt64: |
| 78 | case Constant::kExternalReference: |
| 79 | case Constant::kHeapObject: |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 80 | case Constant::kRpoNumber: |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 81 | break; |
| 82 | } |
| 83 | UNREACHABLE(); |
| 84 | return Operand::Zero(); |
| 85 | } |
| 86 | |
| 87 | Operand InputOperand2(int first_index) { |
| 88 | const int index = first_index; |
| 89 | switch (AddressingModeField::decode(instr_->opcode())) { |
| 90 | case kMode_None: |
| 91 | case kMode_Offset_RI: |
| 92 | case kMode_Offset_RR: |
| 93 | break; |
| 94 | case kMode_Operand2_I: |
| 95 | return InputImmediate(index + 0); |
| 96 | case kMode_Operand2_R: |
| 97 | return Operand(InputRegister(index + 0)); |
| 98 | case kMode_Operand2_R_ASR_I: |
| 99 | return Operand(InputRegister(index + 0), ASR, InputInt5(index + 1)); |
| 100 | case kMode_Operand2_R_ASR_R: |
| 101 | return Operand(InputRegister(index + 0), ASR, InputRegister(index + 1)); |
| 102 | case kMode_Operand2_R_LSL_I: |
| 103 | return Operand(InputRegister(index + 0), LSL, InputInt5(index + 1)); |
| 104 | case kMode_Operand2_R_LSL_R: |
| 105 | return Operand(InputRegister(index + 0), LSL, InputRegister(index + 1)); |
| 106 | case kMode_Operand2_R_LSR_I: |
| 107 | return Operand(InputRegister(index + 0), LSR, InputInt5(index + 1)); |
| 108 | case kMode_Operand2_R_LSR_R: |
| 109 | return Operand(InputRegister(index + 0), LSR, InputRegister(index + 1)); |
| 110 | case kMode_Operand2_R_ROR_I: |
| 111 | return Operand(InputRegister(index + 0), ROR, InputInt5(index + 1)); |
| 112 | case kMode_Operand2_R_ROR_R: |
| 113 | return Operand(InputRegister(index + 0), ROR, InputRegister(index + 1)); |
| 114 | } |
| 115 | UNREACHABLE(); |
| 116 | return Operand::Zero(); |
| 117 | } |
| 118 | |
| 119 | MemOperand InputOffset(int* first_index) { |
| 120 | const int index = *first_index; |
| 121 | switch (AddressingModeField::decode(instr_->opcode())) { |
| 122 | case kMode_None: |
| 123 | case kMode_Operand2_I: |
| 124 | case kMode_Operand2_R: |
| 125 | case kMode_Operand2_R_ASR_I: |
| 126 | case kMode_Operand2_R_ASR_R: |
| 127 | case kMode_Operand2_R_LSL_I: |
| 128 | case kMode_Operand2_R_LSL_R: |
| 129 | case kMode_Operand2_R_LSR_I: |
| 130 | case kMode_Operand2_R_LSR_R: |
| 131 | case kMode_Operand2_R_ROR_I: |
| 132 | case kMode_Operand2_R_ROR_R: |
| 133 | break; |
| 134 | case kMode_Offset_RI: |
| 135 | *first_index += 2; |
| 136 | return MemOperand(InputRegister(index + 0), InputInt32(index + 1)); |
| 137 | case kMode_Offset_RR: |
| 138 | *first_index += 2; |
| 139 | return MemOperand(InputRegister(index + 0), InputRegister(index + 1)); |
| 140 | } |
| 141 | UNREACHABLE(); |
| 142 | return MemOperand(r0); |
| 143 | } |
| 144 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 145 | MemOperand InputOffset(int first_index = 0) { |
| 146 | return InputOffset(&first_index); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 147 | } |
| 148 | |
| 149 | MemOperand ToMemOperand(InstructionOperand* op) const { |
| 150 | DCHECK(op != NULL); |
| 151 | DCHECK(!op->IsRegister()); |
| 152 | DCHECK(!op->IsDoubleRegister()); |
| 153 | DCHECK(op->IsStackSlot() || op->IsDoubleStackSlot()); |
| 154 | // The linkage computes where all spill slots are located. |
| 155 | FrameOffset offset = linkage()->GetFrameOffset(op->index(), frame(), 0); |
| 156 | return MemOperand(offset.from_stack_pointer() ? sp : fp, offset.offset()); |
| 157 | } |
| 158 | }; |
| 159 | |
| 160 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 161 | namespace { |
| 162 | |
| 163 | class OutOfLineLoadFloat32 FINAL : public OutOfLineCode { |
| 164 | public: |
| 165 | OutOfLineLoadFloat32(CodeGenerator* gen, SwVfpRegister result) |
| 166 | : OutOfLineCode(gen), result_(result) {} |
| 167 | |
| 168 | void Generate() FINAL { |
| 169 | __ vmov(result_, std::numeric_limits<float>::quiet_NaN()); |
| 170 | } |
| 171 | |
| 172 | private: |
| 173 | SwVfpRegister const result_; |
| 174 | }; |
| 175 | |
| 176 | |
| 177 | class OutOfLineLoadFloat64 FINAL : public OutOfLineCode { |
| 178 | public: |
| 179 | OutOfLineLoadFloat64(CodeGenerator* gen, DwVfpRegister result) |
| 180 | : OutOfLineCode(gen), result_(result) {} |
| 181 | |
| 182 | void Generate() FINAL { |
| 183 | __ vmov(result_, std::numeric_limits<double>::quiet_NaN(), kScratchReg); |
| 184 | } |
| 185 | |
| 186 | private: |
| 187 | DwVfpRegister const result_; |
| 188 | }; |
| 189 | |
| 190 | |
| 191 | class OutOfLineLoadInteger FINAL : public OutOfLineCode { |
| 192 | public: |
| 193 | OutOfLineLoadInteger(CodeGenerator* gen, Register result) |
| 194 | : OutOfLineCode(gen), result_(result) {} |
| 195 | |
| 196 | void Generate() FINAL { __ mov(result_, Operand::Zero()); } |
| 197 | |
| 198 | private: |
| 199 | Register const result_; |
| 200 | }; |
| 201 | |
| 202 | } // namespace |
| 203 | |
| 204 | |
| 205 | #define ASSEMBLE_CHECKED_LOAD_FLOAT(width) \ |
| 206 | do { \ |
| 207 | auto result = i.OutputFloat##width##Register(); \ |
| 208 | auto offset = i.InputRegister(0); \ |
| 209 | if (instr->InputAt(1)->IsRegister()) { \ |
| 210 | __ cmp(offset, i.InputRegister(1)); \ |
| 211 | } else { \ |
| 212 | __ cmp(offset, i.InputImmediate(1)); \ |
| 213 | } \ |
| 214 | auto ool = new (zone()) OutOfLineLoadFloat##width(this, result); \ |
| 215 | __ b(hs, ool->entry()); \ |
| 216 | __ vldr(result, i.InputOffset(2)); \ |
| 217 | __ bind(ool->exit()); \ |
| 218 | DCHECK_EQ(LeaveCC, i.OutputSBit()); \ |
| 219 | } while (0) |
| 220 | |
| 221 | |
| 222 | #define ASSEMBLE_CHECKED_LOAD_INTEGER(asm_instr) \ |
| 223 | do { \ |
| 224 | auto result = i.OutputRegister(); \ |
| 225 | auto offset = i.InputRegister(0); \ |
| 226 | if (instr->InputAt(1)->IsRegister()) { \ |
| 227 | __ cmp(offset, i.InputRegister(1)); \ |
| 228 | } else { \ |
| 229 | __ cmp(offset, i.InputImmediate(1)); \ |
| 230 | } \ |
| 231 | auto ool = new (zone()) OutOfLineLoadInteger(this, result); \ |
| 232 | __ b(hs, ool->entry()); \ |
| 233 | __ asm_instr(result, i.InputOffset(2)); \ |
| 234 | __ bind(ool->exit()); \ |
| 235 | DCHECK_EQ(LeaveCC, i.OutputSBit()); \ |
| 236 | } while (0) |
| 237 | |
| 238 | |
| 239 | #define ASSEMBLE_CHECKED_STORE_FLOAT(width) \ |
| 240 | do { \ |
| 241 | auto offset = i.InputRegister(0); \ |
| 242 | if (instr->InputAt(1)->IsRegister()) { \ |
| 243 | __ cmp(offset, i.InputRegister(1)); \ |
| 244 | } else { \ |
| 245 | __ cmp(offset, i.InputImmediate(1)); \ |
| 246 | } \ |
| 247 | auto value = i.InputFloat##width##Register(2); \ |
| 248 | __ vstr(value, i.InputOffset(3), lo); \ |
| 249 | DCHECK_EQ(LeaveCC, i.OutputSBit()); \ |
| 250 | } while (0) |
| 251 | |
| 252 | |
| 253 | #define ASSEMBLE_CHECKED_STORE_INTEGER(asm_instr) \ |
| 254 | do { \ |
| 255 | auto offset = i.InputRegister(0); \ |
| 256 | if (instr->InputAt(1)->IsRegister()) { \ |
| 257 | __ cmp(offset, i.InputRegister(1)); \ |
| 258 | } else { \ |
| 259 | __ cmp(offset, i.InputImmediate(1)); \ |
| 260 | } \ |
| 261 | auto value = i.InputRegister(2); \ |
| 262 | __ asm_instr(value, i.InputOffset(3), lo); \ |
| 263 | DCHECK_EQ(LeaveCC, i.OutputSBit()); \ |
| 264 | } while (0) |
| 265 | |
| 266 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 267 | // Assembles an instruction after register allocation, producing machine code. |
| 268 | void CodeGenerator::AssembleArchInstruction(Instruction* instr) { |
| 269 | ArmOperandConverter i(this, instr); |
| 270 | |
| 271 | switch (ArchOpcodeField::decode(instr->opcode())) { |
| 272 | case kArchCallCodeObject: { |
| 273 | EnsureSpaceForLazyDeopt(); |
| 274 | if (instr->InputAt(0)->IsImmediate()) { |
| 275 | __ Call(Handle<Code>::cast(i.InputHeapObject(0)), |
| 276 | RelocInfo::CODE_TARGET); |
| 277 | } else { |
| 278 | __ add(ip, i.InputRegister(0), |
| 279 | Operand(Code::kHeaderSize - kHeapObjectTag)); |
| 280 | __ Call(ip); |
| 281 | } |
| 282 | AddSafepointAndDeopt(instr); |
| 283 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 284 | break; |
| 285 | } |
| 286 | case kArchCallJSFunction: { |
| 287 | EnsureSpaceForLazyDeopt(); |
| 288 | Register func = i.InputRegister(0); |
| 289 | if (FLAG_debug_code) { |
| 290 | // Check the function's context matches the context argument. |
| 291 | __ ldr(kScratchReg, FieldMemOperand(func, JSFunction::kContextOffset)); |
| 292 | __ cmp(cp, kScratchReg); |
| 293 | __ Assert(eq, kWrongFunctionContext); |
| 294 | } |
| 295 | __ ldr(ip, FieldMemOperand(func, JSFunction::kCodeEntryOffset)); |
| 296 | __ Call(ip); |
| 297 | AddSafepointAndDeopt(instr); |
| 298 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 299 | break; |
| 300 | } |
| 301 | case kArchJmp: |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 302 | AssembleArchJump(i.InputRpo(0)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 303 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 304 | break; |
| 305 | case kArchNop: |
| 306 | // don't emit code for nops. |
| 307 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 308 | break; |
| 309 | case kArchRet: |
| 310 | AssembleReturn(); |
| 311 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 312 | break; |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 313 | case kArchStackPointer: |
| 314 | __ mov(i.OutputRegister(), sp); |
| 315 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 316 | break; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 317 | case kArchTruncateDoubleToI: |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 318 | __ TruncateDoubleToI(i.OutputRegister(), i.InputFloat64Register(0)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 319 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 320 | break; |
| 321 | case kArmAdd: |
| 322 | __ add(i.OutputRegister(), i.InputRegister(0), i.InputOperand2(1), |
| 323 | i.OutputSBit()); |
| 324 | break; |
| 325 | case kArmAnd: |
| 326 | __ and_(i.OutputRegister(), i.InputRegister(0), i.InputOperand2(1), |
| 327 | i.OutputSBit()); |
| 328 | break; |
| 329 | case kArmBic: |
| 330 | __ bic(i.OutputRegister(), i.InputRegister(0), i.InputOperand2(1), |
| 331 | i.OutputSBit()); |
| 332 | break; |
| 333 | case kArmMul: |
| 334 | __ mul(i.OutputRegister(), i.InputRegister(0), i.InputRegister(1), |
| 335 | i.OutputSBit()); |
| 336 | break; |
| 337 | case kArmMla: |
| 338 | __ mla(i.OutputRegister(), i.InputRegister(0), i.InputRegister(1), |
| 339 | i.InputRegister(2), i.OutputSBit()); |
| 340 | break; |
| 341 | case kArmMls: { |
| 342 | CpuFeatureScope scope(masm(), MLS); |
| 343 | __ mls(i.OutputRegister(), i.InputRegister(0), i.InputRegister(1), |
| 344 | i.InputRegister(2)); |
| 345 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 346 | break; |
| 347 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 348 | case kArmSmmul: |
| 349 | __ smmul(i.OutputRegister(), i.InputRegister(0), i.InputRegister(1)); |
| 350 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 351 | break; |
| 352 | case kArmSmmla: |
| 353 | __ smmla(i.OutputRegister(), i.InputRegister(0), i.InputRegister(1), |
| 354 | i.InputRegister(2)); |
| 355 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 356 | break; |
| 357 | case kArmUmull: |
| 358 | __ umull(i.OutputRegister(0), i.OutputRegister(1), i.InputRegister(0), |
| 359 | i.InputRegister(1), i.OutputSBit()); |
| 360 | break; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 361 | case kArmSdiv: { |
| 362 | CpuFeatureScope scope(masm(), SUDIV); |
| 363 | __ sdiv(i.OutputRegister(), i.InputRegister(0), i.InputRegister(1)); |
| 364 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 365 | break; |
| 366 | } |
| 367 | case kArmUdiv: { |
| 368 | CpuFeatureScope scope(masm(), SUDIV); |
| 369 | __ udiv(i.OutputRegister(), i.InputRegister(0), i.InputRegister(1)); |
| 370 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 371 | break; |
| 372 | } |
| 373 | case kArmMov: |
| 374 | __ Move(i.OutputRegister(), i.InputOperand2(0), i.OutputSBit()); |
| 375 | break; |
| 376 | case kArmMvn: |
| 377 | __ mvn(i.OutputRegister(), i.InputOperand2(0), i.OutputSBit()); |
| 378 | break; |
| 379 | case kArmOrr: |
| 380 | __ orr(i.OutputRegister(), i.InputRegister(0), i.InputOperand2(1), |
| 381 | i.OutputSBit()); |
| 382 | break; |
| 383 | case kArmEor: |
| 384 | __ eor(i.OutputRegister(), i.InputRegister(0), i.InputOperand2(1), |
| 385 | i.OutputSBit()); |
| 386 | break; |
| 387 | case kArmSub: |
| 388 | __ sub(i.OutputRegister(), i.InputRegister(0), i.InputOperand2(1), |
| 389 | i.OutputSBit()); |
| 390 | break; |
| 391 | case kArmRsb: |
| 392 | __ rsb(i.OutputRegister(), i.InputRegister(0), i.InputOperand2(1), |
| 393 | i.OutputSBit()); |
| 394 | break; |
| 395 | case kArmBfc: { |
| 396 | CpuFeatureScope scope(masm(), ARMv7); |
| 397 | __ bfc(i.OutputRegister(), i.InputInt8(1), i.InputInt8(2)); |
| 398 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 399 | break; |
| 400 | } |
| 401 | case kArmUbfx: { |
| 402 | CpuFeatureScope scope(masm(), ARMv7); |
| 403 | __ ubfx(i.OutputRegister(), i.InputRegister(0), i.InputInt8(1), |
| 404 | i.InputInt8(2)); |
| 405 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 406 | break; |
| 407 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 408 | case kArmSxtb: |
| 409 | __ sxtb(i.OutputRegister(), i.InputRegister(0), i.InputInt32(1)); |
| 410 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 411 | break; |
| 412 | case kArmSxth: |
| 413 | __ sxth(i.OutputRegister(), i.InputRegister(0), i.InputInt32(1)); |
| 414 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 415 | break; |
| 416 | case kArmSxtab: |
| 417 | __ sxtab(i.OutputRegister(), i.InputRegister(0), i.InputRegister(1), |
| 418 | i.InputInt32(2)); |
| 419 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 420 | break; |
| 421 | case kArmSxtah: |
| 422 | __ sxtah(i.OutputRegister(), i.InputRegister(0), i.InputRegister(1), |
| 423 | i.InputInt32(2)); |
| 424 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 425 | break; |
| 426 | case kArmUxtb: |
| 427 | __ uxtb(i.OutputRegister(), i.InputRegister(0), i.InputInt32(1)); |
| 428 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 429 | break; |
| 430 | case kArmUxth: |
| 431 | __ uxth(i.OutputRegister(), i.InputRegister(0), i.InputInt32(1)); |
| 432 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 433 | break; |
| 434 | case kArmUxtab: |
| 435 | __ uxtab(i.OutputRegister(), i.InputRegister(0), i.InputRegister(1), |
| 436 | i.InputInt32(2)); |
| 437 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 438 | break; |
| 439 | case kArmUxtah: |
| 440 | __ uxtah(i.OutputRegister(), i.InputRegister(0), i.InputRegister(1), |
| 441 | i.InputInt32(2)); |
| 442 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 443 | break; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 444 | case kArmCmp: |
| 445 | __ cmp(i.InputRegister(0), i.InputOperand2(1)); |
| 446 | DCHECK_EQ(SetCC, i.OutputSBit()); |
| 447 | break; |
| 448 | case kArmCmn: |
| 449 | __ cmn(i.InputRegister(0), i.InputOperand2(1)); |
| 450 | DCHECK_EQ(SetCC, i.OutputSBit()); |
| 451 | break; |
| 452 | case kArmTst: |
| 453 | __ tst(i.InputRegister(0), i.InputOperand2(1)); |
| 454 | DCHECK_EQ(SetCC, i.OutputSBit()); |
| 455 | break; |
| 456 | case kArmTeq: |
| 457 | __ teq(i.InputRegister(0), i.InputOperand2(1)); |
| 458 | DCHECK_EQ(SetCC, i.OutputSBit()); |
| 459 | break; |
| 460 | case kArmVcmpF64: |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 461 | __ VFPCompareAndSetFlags(i.InputFloat64Register(0), |
| 462 | i.InputFloat64Register(1)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 463 | DCHECK_EQ(SetCC, i.OutputSBit()); |
| 464 | break; |
| 465 | case kArmVaddF64: |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 466 | __ vadd(i.OutputFloat64Register(), i.InputFloat64Register(0), |
| 467 | i.InputFloat64Register(1)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 468 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 469 | break; |
| 470 | case kArmVsubF64: |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 471 | __ vsub(i.OutputFloat64Register(), i.InputFloat64Register(0), |
| 472 | i.InputFloat64Register(1)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 473 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 474 | break; |
| 475 | case kArmVmulF64: |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 476 | __ vmul(i.OutputFloat64Register(), i.InputFloat64Register(0), |
| 477 | i.InputFloat64Register(1)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 478 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 479 | break; |
| 480 | case kArmVmlaF64: |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 481 | __ vmla(i.OutputFloat64Register(), i.InputFloat64Register(1), |
| 482 | i.InputFloat64Register(2)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 483 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 484 | break; |
| 485 | case kArmVmlsF64: |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 486 | __ vmls(i.OutputFloat64Register(), i.InputFloat64Register(1), |
| 487 | i.InputFloat64Register(2)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 488 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 489 | break; |
| 490 | case kArmVdivF64: |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 491 | __ vdiv(i.OutputFloat64Register(), i.InputFloat64Register(0), |
| 492 | i.InputFloat64Register(1)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 493 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 494 | break; |
| 495 | case kArmVmodF64: { |
| 496 | // TODO(bmeurer): We should really get rid of this special instruction, |
| 497 | // and generate a CallAddress instruction instead. |
| 498 | FrameScope scope(masm(), StackFrame::MANUAL); |
| 499 | __ PrepareCallCFunction(0, 2, kScratchReg); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 500 | __ MovToFloatParameters(i.InputFloat64Register(0), |
| 501 | i.InputFloat64Register(1)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 502 | __ CallCFunction(ExternalReference::mod_two_doubles_operation(isolate()), |
| 503 | 0, 2); |
| 504 | // Move the result in the double result register. |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 505 | __ MovFromFloatResult(i.OutputFloat64Register()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 506 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 507 | break; |
| 508 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 509 | case kArmVsqrtF64: |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 510 | __ vsqrt(i.OutputFloat64Register(), i.InputFloat64Register(0)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 511 | break; |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 512 | case kArmVfloorF64: |
| 513 | __ vrintm(i.OutputFloat64Register(), i.InputFloat64Register(0)); |
| 514 | break; |
| 515 | case kArmVceilF64: |
| 516 | __ vrintp(i.OutputFloat64Register(), i.InputFloat64Register(0)); |
| 517 | break; |
| 518 | case kArmVroundTruncateF64: |
| 519 | __ vrintz(i.OutputFloat64Register(), i.InputFloat64Register(0)); |
| 520 | break; |
| 521 | case kArmVroundTiesAwayF64: |
| 522 | __ vrinta(i.OutputFloat64Register(), i.InputFloat64Register(0)); |
| 523 | break; |
| 524 | case kArmVnegF64: |
| 525 | __ vneg(i.OutputFloat64Register(), i.InputFloat64Register(0)); |
| 526 | break; |
| 527 | case kArmVcvtF32F64: { |
| 528 | __ vcvt_f32_f64(i.OutputFloat32Register(), i.InputFloat64Register(0)); |
| 529 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 530 | break; |
| 531 | } |
| 532 | case kArmVcvtF64F32: { |
| 533 | __ vcvt_f64_f32(i.OutputFloat64Register(), i.InputFloat32Register(0)); |
| 534 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 535 | break; |
| 536 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 537 | case kArmVcvtF64S32: { |
| 538 | SwVfpRegister scratch = kScratchDoubleReg.low(); |
| 539 | __ vmov(scratch, i.InputRegister(0)); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 540 | __ vcvt_f64_s32(i.OutputFloat64Register(), scratch); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 541 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 542 | break; |
| 543 | } |
| 544 | case kArmVcvtF64U32: { |
| 545 | SwVfpRegister scratch = kScratchDoubleReg.low(); |
| 546 | __ vmov(scratch, i.InputRegister(0)); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 547 | __ vcvt_f64_u32(i.OutputFloat64Register(), scratch); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 548 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 549 | break; |
| 550 | } |
| 551 | case kArmVcvtS32F64: { |
| 552 | SwVfpRegister scratch = kScratchDoubleReg.low(); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 553 | __ vcvt_s32_f64(scratch, i.InputFloat64Register(0)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 554 | __ vmov(i.OutputRegister(), scratch); |
| 555 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 556 | break; |
| 557 | } |
| 558 | case kArmVcvtU32F64: { |
| 559 | SwVfpRegister scratch = kScratchDoubleReg.low(); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 560 | __ vcvt_u32_f64(scratch, i.InputFloat64Register(0)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 561 | __ vmov(i.OutputRegister(), scratch); |
| 562 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 563 | break; |
| 564 | } |
| 565 | case kArmLdrb: |
| 566 | __ ldrb(i.OutputRegister(), i.InputOffset()); |
| 567 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 568 | break; |
| 569 | case kArmLdrsb: |
| 570 | __ ldrsb(i.OutputRegister(), i.InputOffset()); |
| 571 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 572 | break; |
| 573 | case kArmStrb: { |
| 574 | int index = 0; |
| 575 | MemOperand operand = i.InputOffset(&index); |
| 576 | __ strb(i.InputRegister(index), operand); |
| 577 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 578 | break; |
| 579 | } |
| 580 | case kArmLdrh: |
| 581 | __ ldrh(i.OutputRegister(), i.InputOffset()); |
| 582 | break; |
| 583 | case kArmLdrsh: |
| 584 | __ ldrsh(i.OutputRegister(), i.InputOffset()); |
| 585 | break; |
| 586 | case kArmStrh: { |
| 587 | int index = 0; |
| 588 | MemOperand operand = i.InputOffset(&index); |
| 589 | __ strh(i.InputRegister(index), operand); |
| 590 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 591 | break; |
| 592 | } |
| 593 | case kArmLdr: |
| 594 | __ ldr(i.OutputRegister(), i.InputOffset()); |
| 595 | break; |
| 596 | case kArmStr: { |
| 597 | int index = 0; |
| 598 | MemOperand operand = i.InputOffset(&index); |
| 599 | __ str(i.InputRegister(index), operand); |
| 600 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 601 | break; |
| 602 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 603 | case kArmVldrF32: { |
| 604 | __ vldr(i.OutputFloat32Register(), i.InputOffset()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 605 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 606 | break; |
| 607 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 608 | case kArmVstrF32: { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 609 | int index = 0; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 610 | MemOperand operand = i.InputOffset(&index); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 611 | __ vstr(i.InputFloat32Register(index), operand); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 612 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 613 | break; |
| 614 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 615 | case kArmVldrF64: |
| 616 | __ vldr(i.OutputFloat64Register(), i.InputOffset()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 617 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 618 | break; |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 619 | case kArmVstrF64: { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 620 | int index = 0; |
| 621 | MemOperand operand = i.InputOffset(&index); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 622 | __ vstr(i.InputFloat64Register(index), operand); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 623 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 624 | break; |
| 625 | } |
| 626 | case kArmPush: |
| 627 | __ Push(i.InputRegister(0)); |
| 628 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 629 | break; |
| 630 | case kArmStoreWriteBarrier: { |
| 631 | Register object = i.InputRegister(0); |
| 632 | Register index = i.InputRegister(1); |
| 633 | Register value = i.InputRegister(2); |
| 634 | __ add(index, object, index); |
| 635 | __ str(value, MemOperand(index)); |
| 636 | SaveFPRegsMode mode = |
| 637 | frame()->DidAllocateDoubleRegisters() ? kSaveFPRegs : kDontSaveFPRegs; |
| 638 | LinkRegisterStatus lr_status = kLRHasNotBeenSaved; |
| 639 | __ RecordWrite(object, index, value, lr_status, mode); |
| 640 | DCHECK_EQ(LeaveCC, i.OutputSBit()); |
| 641 | break; |
| 642 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 643 | case kCheckedLoadInt8: |
| 644 | ASSEMBLE_CHECKED_LOAD_INTEGER(ldrsb); |
| 645 | break; |
| 646 | case kCheckedLoadUint8: |
| 647 | ASSEMBLE_CHECKED_LOAD_INTEGER(ldrb); |
| 648 | break; |
| 649 | case kCheckedLoadInt16: |
| 650 | ASSEMBLE_CHECKED_LOAD_INTEGER(ldrsh); |
| 651 | break; |
| 652 | case kCheckedLoadUint16: |
| 653 | ASSEMBLE_CHECKED_LOAD_INTEGER(ldrh); |
| 654 | break; |
| 655 | case kCheckedLoadWord32: |
| 656 | ASSEMBLE_CHECKED_LOAD_INTEGER(ldr); |
| 657 | break; |
| 658 | case kCheckedLoadFloat32: |
| 659 | ASSEMBLE_CHECKED_LOAD_FLOAT(32); |
| 660 | break; |
| 661 | case kCheckedLoadFloat64: |
| 662 | ASSEMBLE_CHECKED_LOAD_FLOAT(64); |
| 663 | break; |
| 664 | case kCheckedStoreWord8: |
| 665 | ASSEMBLE_CHECKED_STORE_INTEGER(strb); |
| 666 | break; |
| 667 | case kCheckedStoreWord16: |
| 668 | ASSEMBLE_CHECKED_STORE_INTEGER(strh); |
| 669 | break; |
| 670 | case kCheckedStoreWord32: |
| 671 | ASSEMBLE_CHECKED_STORE_INTEGER(str); |
| 672 | break; |
| 673 | case kCheckedStoreFloat32: |
| 674 | ASSEMBLE_CHECKED_STORE_FLOAT(32); |
| 675 | break; |
| 676 | case kCheckedStoreFloat64: |
| 677 | ASSEMBLE_CHECKED_STORE_FLOAT(64); |
| 678 | break; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 679 | } |
| 680 | } |
| 681 | |
| 682 | |
| 683 | // Assembles branches after an instruction. |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 684 | void CodeGenerator::AssembleArchBranch(Instruction* instr, BranchInfo* branch) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 685 | ArmOperandConverter i(this, instr); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 686 | Label* tlabel = branch->true_label; |
| 687 | Label* flabel = branch->false_label; |
| 688 | switch (branch->condition) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 689 | case kUnorderedEqual: |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 690 | // The "eq" condition will not catch the unordered case. |
| 691 | // The jump/fall through to false label will be used if the comparison |
| 692 | // was unordered. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 693 | case kEqual: |
| 694 | __ b(eq, tlabel); |
| 695 | break; |
| 696 | case kUnorderedNotEqual: |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 697 | // Unordered or not equal can be tested with "ne" condtion. |
| 698 | // See ARMv7 manual A8.3 - Conditional execution. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 699 | case kNotEqual: |
| 700 | __ b(ne, tlabel); |
| 701 | break; |
| 702 | case kSignedLessThan: |
| 703 | __ b(lt, tlabel); |
| 704 | break; |
| 705 | case kSignedGreaterThanOrEqual: |
| 706 | __ b(ge, tlabel); |
| 707 | break; |
| 708 | case kSignedLessThanOrEqual: |
| 709 | __ b(le, tlabel); |
| 710 | break; |
| 711 | case kSignedGreaterThan: |
| 712 | __ b(gt, tlabel); |
| 713 | break; |
| 714 | case kUnorderedLessThan: |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 715 | // The "lo" condition will not catch the unordered case. |
| 716 | // The jump/fall through to false label will be used if the comparison |
| 717 | // was unordered. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 718 | case kUnsignedLessThan: |
| 719 | __ b(lo, tlabel); |
| 720 | break; |
| 721 | case kUnorderedGreaterThanOrEqual: |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 722 | // Unordered, greater than or equal can be tested with "hs" condtion. |
| 723 | // See ARMv7 manual A8.3 - Conditional execution. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 724 | case kUnsignedGreaterThanOrEqual: |
| 725 | __ b(hs, tlabel); |
| 726 | break; |
| 727 | case kUnorderedLessThanOrEqual: |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 728 | // The "ls" condition will not catch the unordered case. |
| 729 | // The jump/fall through to false label will be used if the comparison |
| 730 | // was unordered. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 731 | case kUnsignedLessThanOrEqual: |
| 732 | __ b(ls, tlabel); |
| 733 | break; |
| 734 | case kUnorderedGreaterThan: |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 735 | // Unordered or greater than can be tested with "hi" condtion. |
| 736 | // See ARMv7 manual A8.3 - Conditional execution. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 737 | case kUnsignedGreaterThan: |
| 738 | __ b(hi, tlabel); |
| 739 | break; |
| 740 | case kOverflow: |
| 741 | __ b(vs, tlabel); |
| 742 | break; |
| 743 | case kNotOverflow: |
| 744 | __ b(vc, tlabel); |
| 745 | break; |
| 746 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 747 | if (!branch->fallthru) __ b(flabel); // no fallthru to flabel. |
| 748 | } |
| 749 | |
| 750 | |
| 751 | void CodeGenerator::AssembleArchJump(BasicBlock::RpoNumber target) { |
| 752 | if (!IsNextInAssemblyOrder(target)) __ b(GetLabel(target)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 753 | } |
| 754 | |
| 755 | |
| 756 | // Assembles boolean materializations after an instruction. |
| 757 | void CodeGenerator::AssembleArchBoolean(Instruction* instr, |
| 758 | FlagsCondition condition) { |
| 759 | ArmOperandConverter i(this, instr); |
| 760 | Label done; |
| 761 | |
| 762 | // Materialize a full 32-bit 1 or 0 value. The result register is always the |
| 763 | // last output of the instruction. |
| 764 | Label check; |
| 765 | DCHECK_NE(0, instr->OutputCount()); |
| 766 | Register reg = i.OutputRegister(instr->OutputCount() - 1); |
| 767 | Condition cc = kNoCondition; |
| 768 | switch (condition) { |
| 769 | case kUnorderedEqual: |
| 770 | __ b(vc, &check); |
| 771 | __ mov(reg, Operand(0)); |
| 772 | __ b(&done); |
| 773 | // Fall through. |
| 774 | case kEqual: |
| 775 | cc = eq; |
| 776 | break; |
| 777 | case kUnorderedNotEqual: |
| 778 | __ b(vc, &check); |
| 779 | __ mov(reg, Operand(1)); |
| 780 | __ b(&done); |
| 781 | // Fall through. |
| 782 | case kNotEqual: |
| 783 | cc = ne; |
| 784 | break; |
| 785 | case kSignedLessThan: |
| 786 | cc = lt; |
| 787 | break; |
| 788 | case kSignedGreaterThanOrEqual: |
| 789 | cc = ge; |
| 790 | break; |
| 791 | case kSignedLessThanOrEqual: |
| 792 | cc = le; |
| 793 | break; |
| 794 | case kSignedGreaterThan: |
| 795 | cc = gt; |
| 796 | break; |
| 797 | case kUnorderedLessThan: |
| 798 | __ b(vc, &check); |
| 799 | __ mov(reg, Operand(0)); |
| 800 | __ b(&done); |
| 801 | // Fall through. |
| 802 | case kUnsignedLessThan: |
| 803 | cc = lo; |
| 804 | break; |
| 805 | case kUnorderedGreaterThanOrEqual: |
| 806 | __ b(vc, &check); |
| 807 | __ mov(reg, Operand(1)); |
| 808 | __ b(&done); |
| 809 | // Fall through. |
| 810 | case kUnsignedGreaterThanOrEqual: |
| 811 | cc = hs; |
| 812 | break; |
| 813 | case kUnorderedLessThanOrEqual: |
| 814 | __ b(vc, &check); |
| 815 | __ mov(reg, Operand(0)); |
| 816 | __ b(&done); |
| 817 | // Fall through. |
| 818 | case kUnsignedLessThanOrEqual: |
| 819 | cc = ls; |
| 820 | break; |
| 821 | case kUnorderedGreaterThan: |
| 822 | __ b(vc, &check); |
| 823 | __ mov(reg, Operand(1)); |
| 824 | __ b(&done); |
| 825 | // Fall through. |
| 826 | case kUnsignedGreaterThan: |
| 827 | cc = hi; |
| 828 | break; |
| 829 | case kOverflow: |
| 830 | cc = vs; |
| 831 | break; |
| 832 | case kNotOverflow: |
| 833 | cc = vc; |
| 834 | break; |
| 835 | } |
| 836 | __ bind(&check); |
| 837 | __ mov(reg, Operand(0)); |
| 838 | __ mov(reg, Operand(1), LeaveCC, cc); |
| 839 | __ bind(&done); |
| 840 | } |
| 841 | |
| 842 | |
| 843 | void CodeGenerator::AssembleDeoptimizerCall(int deoptimization_id) { |
| 844 | Address deopt_entry = Deoptimizer::GetDeoptimizationEntry( |
| 845 | isolate(), deoptimization_id, Deoptimizer::LAZY); |
| 846 | __ Call(deopt_entry, RelocInfo::RUNTIME_ENTRY); |
| 847 | } |
| 848 | |
| 849 | |
| 850 | void CodeGenerator::AssemblePrologue() { |
| 851 | CallDescriptor* descriptor = linkage()->GetIncomingDescriptor(); |
| 852 | if (descriptor->kind() == CallDescriptor::kCallAddress) { |
| 853 | bool saved_pp; |
| 854 | if (FLAG_enable_ool_constant_pool) { |
| 855 | __ Push(lr, fp, pp); |
| 856 | // Adjust FP to point to saved FP. |
| 857 | __ sub(fp, sp, Operand(StandardFrameConstants::kConstantPoolOffset)); |
| 858 | saved_pp = true; |
| 859 | } else { |
| 860 | __ Push(lr, fp); |
| 861 | __ mov(fp, sp); |
| 862 | saved_pp = false; |
| 863 | } |
| 864 | const RegList saves = descriptor->CalleeSavedRegisters(); |
| 865 | if (saves != 0 || saved_pp) { |
| 866 | // Save callee-saved registers. |
| 867 | int register_save_area_size = saved_pp ? kPointerSize : 0; |
| 868 | for (int i = Register::kNumRegisters - 1; i >= 0; i--) { |
| 869 | if (!((1 << i) & saves)) continue; |
| 870 | register_save_area_size += kPointerSize; |
| 871 | } |
| 872 | frame()->SetRegisterSaveAreaSize(register_save_area_size); |
| 873 | __ stm(db_w, sp, saves); |
| 874 | } |
| 875 | } else if (descriptor->IsJSFunctionCall()) { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 876 | CompilationInfo* info = this->info(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 877 | __ Prologue(info->IsCodePreAgingActive()); |
| 878 | frame()->SetRegisterSaveAreaSize( |
| 879 | StandardFrameConstants::kFixedFrameSizeFromFp); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 880 | } else { |
| 881 | __ StubPrologue(); |
| 882 | frame()->SetRegisterSaveAreaSize( |
| 883 | StandardFrameConstants::kFixedFrameSizeFromFp); |
| 884 | } |
| 885 | int stack_slots = frame()->GetSpillSlotCount(); |
| 886 | if (stack_slots > 0) { |
| 887 | __ sub(sp, sp, Operand(stack_slots * kPointerSize)); |
| 888 | } |
| 889 | } |
| 890 | |
| 891 | |
| 892 | void CodeGenerator::AssembleReturn() { |
| 893 | CallDescriptor* descriptor = linkage()->GetIncomingDescriptor(); |
| 894 | if (descriptor->kind() == CallDescriptor::kCallAddress) { |
| 895 | if (frame()->GetRegisterSaveAreaSize() > 0) { |
| 896 | // Remove this frame's spill slots first. |
| 897 | int stack_slots = frame()->GetSpillSlotCount(); |
| 898 | if (stack_slots > 0) { |
| 899 | __ add(sp, sp, Operand(stack_slots * kPointerSize)); |
| 900 | } |
| 901 | // Restore registers. |
| 902 | const RegList saves = descriptor->CalleeSavedRegisters(); |
| 903 | if (saves != 0) { |
| 904 | __ ldm(ia_w, sp, saves); |
| 905 | } |
| 906 | } |
| 907 | __ LeaveFrame(StackFrame::MANUAL); |
| 908 | __ Ret(); |
| 909 | } else { |
| 910 | __ LeaveFrame(StackFrame::MANUAL); |
| 911 | int pop_count = descriptor->IsJSFunctionCall() |
| 912 | ? static_cast<int>(descriptor->JSParameterCount()) |
| 913 | : 0; |
| 914 | __ Drop(pop_count); |
| 915 | __ Ret(); |
| 916 | } |
| 917 | } |
| 918 | |
| 919 | |
| 920 | void CodeGenerator::AssembleMove(InstructionOperand* source, |
| 921 | InstructionOperand* destination) { |
| 922 | ArmOperandConverter g(this, NULL); |
| 923 | // Dispatch on the source and destination operand kinds. Not all |
| 924 | // combinations are possible. |
| 925 | if (source->IsRegister()) { |
| 926 | DCHECK(destination->IsRegister() || destination->IsStackSlot()); |
| 927 | Register src = g.ToRegister(source); |
| 928 | if (destination->IsRegister()) { |
| 929 | __ mov(g.ToRegister(destination), src); |
| 930 | } else { |
| 931 | __ str(src, g.ToMemOperand(destination)); |
| 932 | } |
| 933 | } else if (source->IsStackSlot()) { |
| 934 | DCHECK(destination->IsRegister() || destination->IsStackSlot()); |
| 935 | MemOperand src = g.ToMemOperand(source); |
| 936 | if (destination->IsRegister()) { |
| 937 | __ ldr(g.ToRegister(destination), src); |
| 938 | } else { |
| 939 | Register temp = kScratchReg; |
| 940 | __ ldr(temp, src); |
| 941 | __ str(temp, g.ToMemOperand(destination)); |
| 942 | } |
| 943 | } else if (source->IsConstant()) { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 944 | Constant src = g.ToConstant(source); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 945 | if (destination->IsRegister() || destination->IsStackSlot()) { |
| 946 | Register dst = |
| 947 | destination->IsRegister() ? g.ToRegister(destination) : kScratchReg; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 948 | switch (src.type()) { |
| 949 | case Constant::kInt32: |
| 950 | __ mov(dst, Operand(src.ToInt32())); |
| 951 | break; |
| 952 | case Constant::kInt64: |
| 953 | UNREACHABLE(); |
| 954 | break; |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 955 | case Constant::kFloat32: |
| 956 | __ Move(dst, |
| 957 | isolate()->factory()->NewNumber(src.ToFloat32(), TENURED)); |
| 958 | break; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 959 | case Constant::kFloat64: |
| 960 | __ Move(dst, |
| 961 | isolate()->factory()->NewNumber(src.ToFloat64(), TENURED)); |
| 962 | break; |
| 963 | case Constant::kExternalReference: |
| 964 | __ mov(dst, Operand(src.ToExternalReference())); |
| 965 | break; |
| 966 | case Constant::kHeapObject: |
| 967 | __ Move(dst, src.ToHeapObject()); |
| 968 | break; |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 969 | case Constant::kRpoNumber: |
| 970 | UNREACHABLE(); // TODO(dcarney): loading RPO constants on arm. |
| 971 | break; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 972 | } |
| 973 | if (destination->IsStackSlot()) __ str(dst, g.ToMemOperand(destination)); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 974 | } else if (src.type() == Constant::kFloat32) { |
| 975 | if (destination->IsDoubleStackSlot()) { |
| 976 | MemOperand dst = g.ToMemOperand(destination); |
| 977 | __ mov(ip, Operand(bit_cast<int32_t>(src.ToFloat32()))); |
| 978 | __ str(ip, dst); |
| 979 | } else { |
| 980 | SwVfpRegister dst = g.ToFloat32Register(destination); |
| 981 | __ vmov(dst, src.ToFloat32()); |
| 982 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 983 | } else { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 984 | DCHECK_EQ(Constant::kFloat64, src.type()); |
| 985 | DwVfpRegister dst = destination->IsDoubleRegister() |
| 986 | ? g.ToFloat64Register(destination) |
| 987 | : kScratchDoubleReg; |
| 988 | __ vmov(dst, src.ToFloat64(), kScratchReg); |
| 989 | if (destination->IsDoubleStackSlot()) { |
| 990 | __ vstr(dst, g.ToMemOperand(destination)); |
| 991 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 992 | } |
| 993 | } else if (source->IsDoubleRegister()) { |
| 994 | DwVfpRegister src = g.ToDoubleRegister(source); |
| 995 | if (destination->IsDoubleRegister()) { |
| 996 | DwVfpRegister dst = g.ToDoubleRegister(destination); |
| 997 | __ Move(dst, src); |
| 998 | } else { |
| 999 | DCHECK(destination->IsDoubleStackSlot()); |
| 1000 | __ vstr(src, g.ToMemOperand(destination)); |
| 1001 | } |
| 1002 | } else if (source->IsDoubleStackSlot()) { |
| 1003 | DCHECK(destination->IsDoubleRegister() || destination->IsDoubleStackSlot()); |
| 1004 | MemOperand src = g.ToMemOperand(source); |
| 1005 | if (destination->IsDoubleRegister()) { |
| 1006 | __ vldr(g.ToDoubleRegister(destination), src); |
| 1007 | } else { |
| 1008 | DwVfpRegister temp = kScratchDoubleReg; |
| 1009 | __ vldr(temp, src); |
| 1010 | __ vstr(temp, g.ToMemOperand(destination)); |
| 1011 | } |
| 1012 | } else { |
| 1013 | UNREACHABLE(); |
| 1014 | } |
| 1015 | } |
| 1016 | |
| 1017 | |
| 1018 | void CodeGenerator::AssembleSwap(InstructionOperand* source, |
| 1019 | InstructionOperand* destination) { |
| 1020 | ArmOperandConverter g(this, NULL); |
| 1021 | // Dispatch on the source and destination operand kinds. Not all |
| 1022 | // combinations are possible. |
| 1023 | if (source->IsRegister()) { |
| 1024 | // Register-register. |
| 1025 | Register temp = kScratchReg; |
| 1026 | Register src = g.ToRegister(source); |
| 1027 | if (destination->IsRegister()) { |
| 1028 | Register dst = g.ToRegister(destination); |
| 1029 | __ Move(temp, src); |
| 1030 | __ Move(src, dst); |
| 1031 | __ Move(dst, temp); |
| 1032 | } else { |
| 1033 | DCHECK(destination->IsStackSlot()); |
| 1034 | MemOperand dst = g.ToMemOperand(destination); |
| 1035 | __ mov(temp, src); |
| 1036 | __ ldr(src, dst); |
| 1037 | __ str(temp, dst); |
| 1038 | } |
| 1039 | } else if (source->IsStackSlot()) { |
| 1040 | DCHECK(destination->IsStackSlot()); |
| 1041 | Register temp_0 = kScratchReg; |
| 1042 | SwVfpRegister temp_1 = kScratchDoubleReg.low(); |
| 1043 | MemOperand src = g.ToMemOperand(source); |
| 1044 | MemOperand dst = g.ToMemOperand(destination); |
| 1045 | __ ldr(temp_0, src); |
| 1046 | __ vldr(temp_1, dst); |
| 1047 | __ str(temp_0, dst); |
| 1048 | __ vstr(temp_1, src); |
| 1049 | } else if (source->IsDoubleRegister()) { |
| 1050 | DwVfpRegister temp = kScratchDoubleReg; |
| 1051 | DwVfpRegister src = g.ToDoubleRegister(source); |
| 1052 | if (destination->IsDoubleRegister()) { |
| 1053 | DwVfpRegister dst = g.ToDoubleRegister(destination); |
| 1054 | __ Move(temp, src); |
| 1055 | __ Move(src, dst); |
| 1056 | __ Move(dst, temp); |
| 1057 | } else { |
| 1058 | DCHECK(destination->IsDoubleStackSlot()); |
| 1059 | MemOperand dst = g.ToMemOperand(destination); |
| 1060 | __ Move(temp, src); |
| 1061 | __ vldr(src, dst); |
| 1062 | __ vstr(temp, dst); |
| 1063 | } |
| 1064 | } else if (source->IsDoubleStackSlot()) { |
| 1065 | DCHECK(destination->IsDoubleStackSlot()); |
| 1066 | Register temp_0 = kScratchReg; |
| 1067 | DwVfpRegister temp_1 = kScratchDoubleReg; |
| 1068 | MemOperand src0 = g.ToMemOperand(source); |
| 1069 | MemOperand src1(src0.rn(), src0.offset() + kPointerSize); |
| 1070 | MemOperand dst0 = g.ToMemOperand(destination); |
| 1071 | MemOperand dst1(dst0.rn(), dst0.offset() + kPointerSize); |
| 1072 | __ vldr(temp_1, dst0); // Save destination in temp_1. |
| 1073 | __ ldr(temp_0, src0); // Then use temp_0 to copy source to destination. |
| 1074 | __ str(temp_0, dst0); |
| 1075 | __ ldr(temp_0, src1); |
| 1076 | __ str(temp_0, dst1); |
| 1077 | __ vstr(temp_1, src0); |
| 1078 | } else { |
| 1079 | // No other combinations are possible. |
| 1080 | UNREACHABLE(); |
| 1081 | } |
| 1082 | } |
| 1083 | |
| 1084 | |
| 1085 | void CodeGenerator::AddNopForSmiCodeInlining() { |
| 1086 | // On 32-bit ARM we do not insert nops for inlined Smi code. |
| 1087 | } |
| 1088 | |
| 1089 | |
| 1090 | void CodeGenerator::EnsureSpaceForLazyDeopt() { |
| 1091 | int space_needed = Deoptimizer::patch_size(); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 1092 | if (!info()->IsStub()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1093 | // Ensure that we have enough space after the previous lazy-bailout |
| 1094 | // instruction for patching the code here. |
| 1095 | int current_pc = masm()->pc_offset(); |
| 1096 | if (current_pc < last_lazy_deopt_pc_ + space_needed) { |
| 1097 | // Block literal pool emission for duration of padding. |
| 1098 | v8::internal::Assembler::BlockConstPoolScope block_const_pool(masm()); |
| 1099 | int padding_size = last_lazy_deopt_pc_ + space_needed - current_pc; |
| 1100 | DCHECK_EQ(0, padding_size % v8::internal::Assembler::kInstrSize); |
| 1101 | while (padding_size > 0) { |
| 1102 | __ nop(); |
| 1103 | padding_size -= v8::internal::Assembler::kInstrSize; |
| 1104 | } |
| 1105 | } |
| 1106 | } |
| 1107 | MarkLazyDeoptSite(); |
| 1108 | } |
| 1109 | |
| 1110 | #undef __ |
| 1111 | |
| 1112 | } // namespace compiler |
| 1113 | } // namespace internal |
| 1114 | } // namespace v8 |