Andreas Gampe | 71fb52f | 2014-12-29 17:43:08 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2015 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | #include "intrinsics_x86_64.h" |
| 18 | |
Andreas Gampe | 21030dd | 2015-05-07 14:46:15 -0700 | [diff] [blame] | 19 | #include <limits> |
| 20 | |
Mark Mendell | fb8d279 | 2015-03-31 22:16:59 -0400 | [diff] [blame] | 21 | #include "arch/x86_64/instruction_set_features_x86_64.h" |
Andreas Gampe | 71fb52f | 2014-12-29 17:43:08 -0800 | [diff] [blame] | 22 | #include "code_generator_x86_64.h" |
| 23 | #include "entrypoints/quick/quick_entrypoints.h" |
| 24 | #include "intrinsics.h" |
| 25 | #include "mirror/array-inl.h" |
| 26 | #include "mirror/art_method.h" |
| 27 | #include "mirror/string.h" |
| 28 | #include "thread.h" |
| 29 | #include "utils/x86_64/assembler_x86_64.h" |
| 30 | #include "utils/x86_64/constants_x86_64.h" |
| 31 | |
| 32 | namespace art { |
| 33 | |
| 34 | namespace x86_64 { |
| 35 | |
Mark Mendell | fb8d279 | 2015-03-31 22:16:59 -0400 | [diff] [blame] | 36 | IntrinsicLocationsBuilderX86_64::IntrinsicLocationsBuilderX86_64(CodeGeneratorX86_64* codegen) |
| 37 | : arena_(codegen->GetGraph()->GetArena()), codegen_(codegen) { |
| 38 | } |
| 39 | |
| 40 | |
Andreas Gampe | 71fb52f | 2014-12-29 17:43:08 -0800 | [diff] [blame] | 41 | X86_64Assembler* IntrinsicCodeGeneratorX86_64::GetAssembler() { |
| 42 | return reinterpret_cast<X86_64Assembler*>(codegen_->GetAssembler()); |
| 43 | } |
| 44 | |
Andreas Gampe | 878d58c | 2015-01-15 23:24:00 -0800 | [diff] [blame] | 45 | ArenaAllocator* IntrinsicCodeGeneratorX86_64::GetAllocator() { |
Andreas Gampe | 71fb52f | 2014-12-29 17:43:08 -0800 | [diff] [blame] | 46 | return codegen_->GetGraph()->GetArena(); |
| 47 | } |
| 48 | |
| 49 | bool IntrinsicLocationsBuilderX86_64::TryDispatch(HInvoke* invoke) { |
| 50 | Dispatch(invoke); |
| 51 | const LocationSummary* res = invoke->GetLocations(); |
| 52 | return res != nullptr && res->Intrinsified(); |
| 53 | } |
| 54 | |
| 55 | #define __ reinterpret_cast<X86_64Assembler*>(codegen->GetAssembler())-> |
| 56 | |
| 57 | // TODO: trg as memory. |
| 58 | static void MoveFromReturnRegister(Location trg, |
| 59 | Primitive::Type type, |
| 60 | CodeGeneratorX86_64* codegen) { |
| 61 | if (!trg.IsValid()) { |
| 62 | DCHECK(type == Primitive::kPrimVoid); |
| 63 | return; |
| 64 | } |
| 65 | |
| 66 | switch (type) { |
| 67 | case Primitive::kPrimBoolean: |
| 68 | case Primitive::kPrimByte: |
| 69 | case Primitive::kPrimChar: |
| 70 | case Primitive::kPrimShort: |
| 71 | case Primitive::kPrimInt: |
| 72 | case Primitive::kPrimNot: { |
| 73 | CpuRegister trg_reg = trg.AsRegister<CpuRegister>(); |
| 74 | if (trg_reg.AsRegister() != RAX) { |
| 75 | __ movl(trg_reg, CpuRegister(RAX)); |
| 76 | } |
| 77 | break; |
| 78 | } |
| 79 | case Primitive::kPrimLong: { |
| 80 | CpuRegister trg_reg = trg.AsRegister<CpuRegister>(); |
| 81 | if (trg_reg.AsRegister() != RAX) { |
| 82 | __ movq(trg_reg, CpuRegister(RAX)); |
| 83 | } |
| 84 | break; |
| 85 | } |
| 86 | |
| 87 | case Primitive::kPrimVoid: |
| 88 | LOG(FATAL) << "Unexpected void type for valid location " << trg; |
| 89 | UNREACHABLE(); |
| 90 | |
| 91 | case Primitive::kPrimDouble: { |
| 92 | XmmRegister trg_reg = trg.AsFpuRegister<XmmRegister>(); |
| 93 | if (trg_reg.AsFloatRegister() != XMM0) { |
| 94 | __ movsd(trg_reg, XmmRegister(XMM0)); |
| 95 | } |
| 96 | break; |
| 97 | } |
| 98 | case Primitive::kPrimFloat: { |
| 99 | XmmRegister trg_reg = trg.AsFpuRegister<XmmRegister>(); |
| 100 | if (trg_reg.AsFloatRegister() != XMM0) { |
| 101 | __ movss(trg_reg, XmmRegister(XMM0)); |
| 102 | } |
| 103 | break; |
| 104 | } |
| 105 | } |
| 106 | } |
| 107 | |
Roland Levillain | ec525fc | 2015-04-28 15:50:20 +0100 | [diff] [blame] | 108 | static void MoveArguments(HInvoke* invoke, CodeGeneratorX86_64* codegen) { |
Roland Levillain | 2d27c8e | 2015-04-28 15:48:45 +0100 | [diff] [blame] | 109 | InvokeDexCallingConventionVisitorX86_64 calling_convention_visitor; |
Roland Levillain | ec525fc | 2015-04-28 15:50:20 +0100 | [diff] [blame] | 110 | IntrinsicVisitor::MoveArguments(invoke, codegen, &calling_convention_visitor); |
Andreas Gampe | 71fb52f | 2014-12-29 17:43:08 -0800 | [diff] [blame] | 111 | } |
| 112 | |
| 113 | // Slow-path for fallback (calling the managed code to handle the intrinsic) in an intrinsified |
| 114 | // call. This will copy the arguments into the positions for a regular call. |
| 115 | // |
| 116 | // Note: The actual parameters are required to be in the locations given by the invoke's location |
| 117 | // summary. If an intrinsic modifies those locations before a slowpath call, they must be |
| 118 | // restored! |
| 119 | class IntrinsicSlowPathX86_64 : public SlowPathCodeX86_64 { |
| 120 | public: |
| 121 | explicit IntrinsicSlowPathX86_64(HInvoke* invoke) : invoke_(invoke) { } |
| 122 | |
| 123 | void EmitNativeCode(CodeGenerator* codegen_in) OVERRIDE { |
| 124 | CodeGeneratorX86_64* codegen = down_cast<CodeGeneratorX86_64*>(codegen_in); |
| 125 | __ Bind(GetEntryLabel()); |
| 126 | |
Nicolas Geoffray | a8ac913 | 2015-03-13 16:36:36 +0000 | [diff] [blame] | 127 | SaveLiveRegisters(codegen, invoke_->GetLocations()); |
Andreas Gampe | 71fb52f | 2014-12-29 17:43:08 -0800 | [diff] [blame] | 128 | |
Roland Levillain | ec525fc | 2015-04-28 15:50:20 +0100 | [diff] [blame] | 129 | MoveArguments(invoke_, codegen); |
Andreas Gampe | 71fb52f | 2014-12-29 17:43:08 -0800 | [diff] [blame] | 130 | |
| 131 | if (invoke_->IsInvokeStaticOrDirect()) { |
| 132 | codegen->GenerateStaticOrDirectCall(invoke_->AsInvokeStaticOrDirect(), CpuRegister(RDI)); |
Nicolas Geoffray | a8ac913 | 2015-03-13 16:36:36 +0000 | [diff] [blame] | 133 | RecordPcInfo(codegen, invoke_, invoke_->GetDexPc()); |
Andreas Gampe | 71fb52f | 2014-12-29 17:43:08 -0800 | [diff] [blame] | 134 | } else { |
| 135 | UNIMPLEMENTED(FATAL) << "Non-direct intrinsic slow-path not yet implemented"; |
| 136 | UNREACHABLE(); |
| 137 | } |
| 138 | |
| 139 | // Copy the result back to the expected output. |
| 140 | Location out = invoke_->GetLocations()->Out(); |
| 141 | if (out.IsValid()) { |
| 142 | DCHECK(out.IsRegister()); // TODO: Replace this when we support output in memory. |
| 143 | DCHECK(!invoke_->GetLocations()->GetLiveRegisters()->ContainsCoreRegister(out.reg())); |
| 144 | MoveFromReturnRegister(out, invoke_->GetType(), codegen); |
| 145 | } |
| 146 | |
Nicolas Geoffray | a8ac913 | 2015-03-13 16:36:36 +0000 | [diff] [blame] | 147 | RestoreLiveRegisters(codegen, invoke_->GetLocations()); |
Andreas Gampe | 71fb52f | 2014-12-29 17:43:08 -0800 | [diff] [blame] | 148 | __ jmp(GetExitLabel()); |
| 149 | } |
| 150 | |
| 151 | private: |
| 152 | // The instruction where this slow path is happening. |
| 153 | HInvoke* const invoke_; |
| 154 | |
| 155 | DISALLOW_COPY_AND_ASSIGN(IntrinsicSlowPathX86_64); |
| 156 | }; |
| 157 | |
| 158 | #undef __ |
| 159 | #define __ assembler-> |
| 160 | |
| 161 | static void CreateFPToIntLocations(ArenaAllocator* arena, HInvoke* invoke) { |
| 162 | LocationSummary* locations = new (arena) LocationSummary(invoke, |
| 163 | LocationSummary::kNoCall, |
| 164 | kIntrinsified); |
| 165 | locations->SetInAt(0, Location::RequiresFpuRegister()); |
| 166 | locations->SetOut(Location::RequiresRegister()); |
| 167 | } |
| 168 | |
| 169 | static void CreateIntToFPLocations(ArenaAllocator* arena, HInvoke* invoke) { |
| 170 | LocationSummary* locations = new (arena) LocationSummary(invoke, |
| 171 | LocationSummary::kNoCall, |
| 172 | kIntrinsified); |
| 173 | locations->SetInAt(0, Location::RequiresRegister()); |
| 174 | locations->SetOut(Location::RequiresFpuRegister()); |
| 175 | } |
| 176 | |
| 177 | static void MoveFPToInt(LocationSummary* locations, bool is64bit, X86_64Assembler* assembler) { |
| 178 | Location input = locations->InAt(0); |
| 179 | Location output = locations->Out(); |
| 180 | __ movd(output.AsRegister<CpuRegister>(), input.AsFpuRegister<XmmRegister>(), is64bit); |
| 181 | } |
| 182 | |
| 183 | static void MoveIntToFP(LocationSummary* locations, bool is64bit, X86_64Assembler* assembler) { |
| 184 | Location input = locations->InAt(0); |
| 185 | Location output = locations->Out(); |
| 186 | __ movd(output.AsFpuRegister<XmmRegister>(), input.AsRegister<CpuRegister>(), is64bit); |
| 187 | } |
| 188 | |
| 189 | void IntrinsicLocationsBuilderX86_64::VisitDoubleDoubleToRawLongBits(HInvoke* invoke) { |
| 190 | CreateFPToIntLocations(arena_, invoke); |
| 191 | } |
| 192 | void IntrinsicLocationsBuilderX86_64::VisitDoubleLongBitsToDouble(HInvoke* invoke) { |
| 193 | CreateIntToFPLocations(arena_, invoke); |
| 194 | } |
| 195 | |
| 196 | void IntrinsicCodeGeneratorX86_64::VisitDoubleDoubleToRawLongBits(HInvoke* invoke) { |
| 197 | MoveFPToInt(invoke->GetLocations(), true, GetAssembler()); |
| 198 | } |
| 199 | void IntrinsicCodeGeneratorX86_64::VisitDoubleLongBitsToDouble(HInvoke* invoke) { |
| 200 | MoveIntToFP(invoke->GetLocations(), true, GetAssembler()); |
| 201 | } |
| 202 | |
| 203 | void IntrinsicLocationsBuilderX86_64::VisitFloatFloatToRawIntBits(HInvoke* invoke) { |
| 204 | CreateFPToIntLocations(arena_, invoke); |
| 205 | } |
| 206 | void IntrinsicLocationsBuilderX86_64::VisitFloatIntBitsToFloat(HInvoke* invoke) { |
| 207 | CreateIntToFPLocations(arena_, invoke); |
| 208 | } |
| 209 | |
| 210 | void IntrinsicCodeGeneratorX86_64::VisitFloatFloatToRawIntBits(HInvoke* invoke) { |
| 211 | MoveFPToInt(invoke->GetLocations(), false, GetAssembler()); |
| 212 | } |
| 213 | void IntrinsicCodeGeneratorX86_64::VisitFloatIntBitsToFloat(HInvoke* invoke) { |
| 214 | MoveIntToFP(invoke->GetLocations(), false, GetAssembler()); |
| 215 | } |
| 216 | |
| 217 | static void CreateIntToIntLocations(ArenaAllocator* arena, HInvoke* invoke) { |
| 218 | LocationSummary* locations = new (arena) LocationSummary(invoke, |
| 219 | LocationSummary::kNoCall, |
| 220 | kIntrinsified); |
| 221 | locations->SetInAt(0, Location::RequiresRegister()); |
| 222 | locations->SetOut(Location::SameAsFirstInput()); |
| 223 | } |
| 224 | |
| 225 | static void GenReverseBytes(LocationSummary* locations, |
| 226 | Primitive::Type size, |
| 227 | X86_64Assembler* assembler) { |
| 228 | CpuRegister out = locations->Out().AsRegister<CpuRegister>(); |
| 229 | |
| 230 | switch (size) { |
| 231 | case Primitive::kPrimShort: |
| 232 | // TODO: Can be done with an xchg of 8b registers. This is straight from Quick. |
| 233 | __ bswapl(out); |
| 234 | __ sarl(out, Immediate(16)); |
| 235 | break; |
| 236 | case Primitive::kPrimInt: |
| 237 | __ bswapl(out); |
| 238 | break; |
| 239 | case Primitive::kPrimLong: |
| 240 | __ bswapq(out); |
| 241 | break; |
| 242 | default: |
| 243 | LOG(FATAL) << "Unexpected size for reverse-bytes: " << size; |
| 244 | UNREACHABLE(); |
| 245 | } |
| 246 | } |
| 247 | |
| 248 | void IntrinsicLocationsBuilderX86_64::VisitIntegerReverseBytes(HInvoke* invoke) { |
| 249 | CreateIntToIntLocations(arena_, invoke); |
| 250 | } |
| 251 | |
| 252 | void IntrinsicCodeGeneratorX86_64::VisitIntegerReverseBytes(HInvoke* invoke) { |
| 253 | GenReverseBytes(invoke->GetLocations(), Primitive::kPrimInt, GetAssembler()); |
| 254 | } |
| 255 | |
| 256 | void IntrinsicLocationsBuilderX86_64::VisitLongReverseBytes(HInvoke* invoke) { |
| 257 | CreateIntToIntLocations(arena_, invoke); |
| 258 | } |
| 259 | |
| 260 | void IntrinsicCodeGeneratorX86_64::VisitLongReverseBytes(HInvoke* invoke) { |
| 261 | GenReverseBytes(invoke->GetLocations(), Primitive::kPrimLong, GetAssembler()); |
| 262 | } |
| 263 | |
| 264 | void IntrinsicLocationsBuilderX86_64::VisitShortReverseBytes(HInvoke* invoke) { |
| 265 | CreateIntToIntLocations(arena_, invoke); |
| 266 | } |
| 267 | |
| 268 | void IntrinsicCodeGeneratorX86_64::VisitShortReverseBytes(HInvoke* invoke) { |
| 269 | GenReverseBytes(invoke->GetLocations(), Primitive::kPrimShort, GetAssembler()); |
| 270 | } |
| 271 | |
| 272 | |
| 273 | // TODO: Consider Quick's way of doing Double abs through integer operations, as the immediate we |
| 274 | // need is 64b. |
| 275 | |
| 276 | static void CreateFloatToFloatPlusTemps(ArenaAllocator* arena, HInvoke* invoke) { |
| 277 | // TODO: Enable memory operations when the assembler supports them. |
| 278 | LocationSummary* locations = new (arena) LocationSummary(invoke, |
| 279 | LocationSummary::kNoCall, |
| 280 | kIntrinsified); |
| 281 | locations->SetInAt(0, Location::RequiresFpuRegister()); |
| 282 | // TODO: Allow x86 to work with memory. This requires assembler support, see below. |
| 283 | // locations->SetInAt(0, Location::Any()); // X86 can work on memory directly. |
| 284 | locations->SetOut(Location::SameAsFirstInput()); |
Mark Mendell | f55c3e0 | 2015-03-26 21:07:46 -0400 | [diff] [blame] | 285 | locations->AddTemp(Location::RequiresFpuRegister()); // FP reg to hold mask. |
Andreas Gampe | 71fb52f | 2014-12-29 17:43:08 -0800 | [diff] [blame] | 286 | } |
| 287 | |
Mark Mendell | 39dcf55 | 2015-04-09 20:42:42 -0400 | [diff] [blame] | 288 | static void MathAbsFP(LocationSummary* locations, |
| 289 | bool is64bit, |
| 290 | X86_64Assembler* assembler, |
| 291 | CodeGeneratorX86_64* codegen) { |
Andreas Gampe | 71fb52f | 2014-12-29 17:43:08 -0800 | [diff] [blame] | 292 | Location output = locations->Out(); |
Andreas Gampe | 71fb52f | 2014-12-29 17:43:08 -0800 | [diff] [blame] | 293 | |
| 294 | if (output.IsFpuRegister()) { |
| 295 | // In-register |
Mark Mendell | f55c3e0 | 2015-03-26 21:07:46 -0400 | [diff] [blame] | 296 | XmmRegister xmm_temp = locations->GetTemp(0).AsFpuRegister<XmmRegister>(); |
Andreas Gampe | 71fb52f | 2014-12-29 17:43:08 -0800 | [diff] [blame] | 297 | |
Mark Mendell | 39dcf55 | 2015-04-09 20:42:42 -0400 | [diff] [blame] | 298 | // TODO: Can mask directly with constant area using pand if we can guarantee |
| 299 | // that the literal is aligned on a 16 byte boundary. This will avoid a |
| 300 | // temporary. |
Andreas Gampe | 71fb52f | 2014-12-29 17:43:08 -0800 | [diff] [blame] | 301 | if (is64bit) { |
Mark Mendell | f55c3e0 | 2015-03-26 21:07:46 -0400 | [diff] [blame] | 302 | __ movsd(xmm_temp, codegen->LiteralInt64Address(INT64_C(0x7FFFFFFFFFFFFFFF))); |
Andreas Gampe | 71fb52f | 2014-12-29 17:43:08 -0800 | [diff] [blame] | 303 | __ andpd(output.AsFpuRegister<XmmRegister>(), xmm_temp); |
| 304 | } else { |
Mark Mendell | f55c3e0 | 2015-03-26 21:07:46 -0400 | [diff] [blame] | 305 | __ movss(xmm_temp, codegen->LiteralInt32Address(INT32_C(0x7FFFFFFF))); |
Andreas Gampe | 71fb52f | 2014-12-29 17:43:08 -0800 | [diff] [blame] | 306 | __ andps(output.AsFpuRegister<XmmRegister>(), xmm_temp); |
| 307 | } |
| 308 | } else { |
| 309 | // TODO: update when assember support is available. |
| 310 | UNIMPLEMENTED(FATAL) << "Needs assembler support."; |
| 311 | // Once assembler support is available, in-memory operations look like this: |
| 312 | // if (is64bit) { |
| 313 | // DCHECK(output.IsDoubleStackSlot()); |
| 314 | // // No 64b and with literal. |
| 315 | // __ movq(cpu_temp, Immediate(INT64_C(0x7FFFFFFFFFFFFFFF))); |
| 316 | // __ andq(Address(CpuRegister(RSP), output.GetStackIndex()), cpu_temp); |
| 317 | // } else { |
| 318 | // DCHECK(output.IsStackSlot()); |
| 319 | // // Can use and with a literal directly. |
| 320 | // __ andl(Address(CpuRegister(RSP), output.GetStackIndex()), Immediate(INT64_C(0x7FFFFFFF))); |
| 321 | // } |
| 322 | } |
| 323 | } |
| 324 | |
| 325 | void IntrinsicLocationsBuilderX86_64::VisitMathAbsDouble(HInvoke* invoke) { |
| 326 | CreateFloatToFloatPlusTemps(arena_, invoke); |
| 327 | } |
| 328 | |
| 329 | void IntrinsicCodeGeneratorX86_64::VisitMathAbsDouble(HInvoke* invoke) { |
Mark Mendell | f55c3e0 | 2015-03-26 21:07:46 -0400 | [diff] [blame] | 330 | MathAbsFP(invoke->GetLocations(), true, GetAssembler(), codegen_); |
Andreas Gampe | 71fb52f | 2014-12-29 17:43:08 -0800 | [diff] [blame] | 331 | } |
| 332 | |
| 333 | void IntrinsicLocationsBuilderX86_64::VisitMathAbsFloat(HInvoke* invoke) { |
| 334 | CreateFloatToFloatPlusTemps(arena_, invoke); |
| 335 | } |
| 336 | |
| 337 | void IntrinsicCodeGeneratorX86_64::VisitMathAbsFloat(HInvoke* invoke) { |
Mark Mendell | f55c3e0 | 2015-03-26 21:07:46 -0400 | [diff] [blame] | 338 | MathAbsFP(invoke->GetLocations(), false, GetAssembler(), codegen_); |
Andreas Gampe | 71fb52f | 2014-12-29 17:43:08 -0800 | [diff] [blame] | 339 | } |
| 340 | |
| 341 | static void CreateIntToIntPlusTemp(ArenaAllocator* arena, HInvoke* invoke) { |
| 342 | LocationSummary* locations = new (arena) LocationSummary(invoke, |
| 343 | LocationSummary::kNoCall, |
| 344 | kIntrinsified); |
| 345 | locations->SetInAt(0, Location::RequiresRegister()); |
| 346 | locations->SetOut(Location::SameAsFirstInput()); |
| 347 | locations->AddTemp(Location::RequiresRegister()); |
| 348 | } |
| 349 | |
| 350 | static void GenAbsInteger(LocationSummary* locations, bool is64bit, X86_64Assembler* assembler) { |
| 351 | Location output = locations->Out(); |
| 352 | CpuRegister out = output.AsRegister<CpuRegister>(); |
| 353 | CpuRegister mask = locations->GetTemp(0).AsRegister<CpuRegister>(); |
| 354 | |
| 355 | if (is64bit) { |
| 356 | // Create mask. |
| 357 | __ movq(mask, out); |
| 358 | __ sarq(mask, Immediate(63)); |
| 359 | // Add mask. |
| 360 | __ addq(out, mask); |
| 361 | __ xorq(out, mask); |
| 362 | } else { |
| 363 | // Create mask. |
| 364 | __ movl(mask, out); |
| 365 | __ sarl(mask, Immediate(31)); |
| 366 | // Add mask. |
| 367 | __ addl(out, mask); |
| 368 | __ xorl(out, mask); |
| 369 | } |
| 370 | } |
| 371 | |
| 372 | void IntrinsicLocationsBuilderX86_64::VisitMathAbsInt(HInvoke* invoke) { |
| 373 | CreateIntToIntPlusTemp(arena_, invoke); |
| 374 | } |
| 375 | |
| 376 | void IntrinsicCodeGeneratorX86_64::VisitMathAbsInt(HInvoke* invoke) { |
| 377 | GenAbsInteger(invoke->GetLocations(), false, GetAssembler()); |
| 378 | } |
| 379 | |
| 380 | void IntrinsicLocationsBuilderX86_64::VisitMathAbsLong(HInvoke* invoke) { |
| 381 | CreateIntToIntPlusTemp(arena_, invoke); |
| 382 | } |
| 383 | |
| 384 | void IntrinsicCodeGeneratorX86_64::VisitMathAbsLong(HInvoke* invoke) { |
| 385 | GenAbsInteger(invoke->GetLocations(), true, GetAssembler()); |
| 386 | } |
| 387 | |
Mark Mendell | 39dcf55 | 2015-04-09 20:42:42 -0400 | [diff] [blame] | 388 | static void GenMinMaxFP(LocationSummary* locations, |
| 389 | bool is_min, |
| 390 | bool is_double, |
| 391 | X86_64Assembler* assembler, |
| 392 | CodeGeneratorX86_64* codegen) { |
Andreas Gampe | 71fb52f | 2014-12-29 17:43:08 -0800 | [diff] [blame] | 393 | Location op1_loc = locations->InAt(0); |
| 394 | Location op2_loc = locations->InAt(1); |
| 395 | Location out_loc = locations->Out(); |
| 396 | XmmRegister out = out_loc.AsFpuRegister<XmmRegister>(); |
| 397 | |
| 398 | // Shortcut for same input locations. |
| 399 | if (op1_loc.Equals(op2_loc)) { |
| 400 | DCHECK(out_loc.Equals(op1_loc)); |
| 401 | return; |
| 402 | } |
| 403 | |
| 404 | // (out := op1) |
| 405 | // out <=? op2 |
| 406 | // if Nan jmp Nan_label |
| 407 | // if out is min jmp done |
| 408 | // if op2 is min jmp op2_label |
| 409 | // handle -0/+0 |
| 410 | // jmp done |
| 411 | // Nan_label: |
| 412 | // out := NaN |
| 413 | // op2_label: |
| 414 | // out := op2 |
| 415 | // done: |
| 416 | // |
| 417 | // This removes one jmp, but needs to copy one input (op1) to out. |
| 418 | // |
Mark Mendell | f55c3e0 | 2015-03-26 21:07:46 -0400 | [diff] [blame] | 419 | // TODO: This is straight from Quick. Make NaN an out-of-line slowpath? |
Andreas Gampe | 71fb52f | 2014-12-29 17:43:08 -0800 | [diff] [blame] | 420 | |
| 421 | XmmRegister op2 = op2_loc.AsFpuRegister<XmmRegister>(); |
| 422 | |
| 423 | Label nan, done, op2_label; |
| 424 | if (is_double) { |
| 425 | __ ucomisd(out, op2); |
| 426 | } else { |
| 427 | __ ucomiss(out, op2); |
| 428 | } |
| 429 | |
| 430 | __ j(Condition::kParityEven, &nan); |
| 431 | |
| 432 | __ j(is_min ? Condition::kAbove : Condition::kBelow, &op2_label); |
| 433 | __ j(is_min ? Condition::kBelow : Condition::kAbove, &done); |
| 434 | |
| 435 | // Handle 0.0/-0.0. |
| 436 | if (is_min) { |
| 437 | if (is_double) { |
| 438 | __ orpd(out, op2); |
| 439 | } else { |
| 440 | __ orps(out, op2); |
| 441 | } |
| 442 | } else { |
| 443 | if (is_double) { |
| 444 | __ andpd(out, op2); |
| 445 | } else { |
| 446 | __ andps(out, op2); |
| 447 | } |
| 448 | } |
| 449 | __ jmp(&done); |
| 450 | |
| 451 | // NaN handling. |
| 452 | __ Bind(&nan); |
Andreas Gampe | 71fb52f | 2014-12-29 17:43:08 -0800 | [diff] [blame] | 453 | if (is_double) { |
Mark Mendell | f55c3e0 | 2015-03-26 21:07:46 -0400 | [diff] [blame] | 454 | __ movsd(out, codegen->LiteralInt64Address(INT64_C(0x7FF8000000000000))); |
Andreas Gampe | 71fb52f | 2014-12-29 17:43:08 -0800 | [diff] [blame] | 455 | } else { |
Mark Mendell | f55c3e0 | 2015-03-26 21:07:46 -0400 | [diff] [blame] | 456 | __ movss(out, codegen->LiteralInt32Address(INT32_C(0x7FC00000))); |
Andreas Gampe | 71fb52f | 2014-12-29 17:43:08 -0800 | [diff] [blame] | 457 | } |
Andreas Gampe | 71fb52f | 2014-12-29 17:43:08 -0800 | [diff] [blame] | 458 | __ jmp(&done); |
| 459 | |
| 460 | // out := op2; |
| 461 | __ Bind(&op2_label); |
| 462 | if (is_double) { |
| 463 | __ movsd(out, op2); |
| 464 | } else { |
| 465 | __ movss(out, op2); |
| 466 | } |
| 467 | |
| 468 | // Done. |
| 469 | __ Bind(&done); |
| 470 | } |
| 471 | |
Mark Mendell | f55c3e0 | 2015-03-26 21:07:46 -0400 | [diff] [blame] | 472 | static void CreateFPFPToFP(ArenaAllocator* arena, HInvoke* invoke) { |
Andreas Gampe | 71fb52f | 2014-12-29 17:43:08 -0800 | [diff] [blame] | 473 | LocationSummary* locations = new (arena) LocationSummary(invoke, |
| 474 | LocationSummary::kNoCall, |
| 475 | kIntrinsified); |
| 476 | locations->SetInAt(0, Location::RequiresFpuRegister()); |
| 477 | locations->SetInAt(1, Location::RequiresFpuRegister()); |
| 478 | // The following is sub-optimal, but all we can do for now. It would be fine to also accept |
| 479 | // the second input to be the output (we can simply swap inputs). |
| 480 | locations->SetOut(Location::SameAsFirstInput()); |
Andreas Gampe | 71fb52f | 2014-12-29 17:43:08 -0800 | [diff] [blame] | 481 | } |
| 482 | |
| 483 | void IntrinsicLocationsBuilderX86_64::VisitMathMinDoubleDouble(HInvoke* invoke) { |
Mark Mendell | f55c3e0 | 2015-03-26 21:07:46 -0400 | [diff] [blame] | 484 | CreateFPFPToFP(arena_, invoke); |
Andreas Gampe | 71fb52f | 2014-12-29 17:43:08 -0800 | [diff] [blame] | 485 | } |
| 486 | |
| 487 | void IntrinsicCodeGeneratorX86_64::VisitMathMinDoubleDouble(HInvoke* invoke) { |
Mark Mendell | f55c3e0 | 2015-03-26 21:07:46 -0400 | [diff] [blame] | 488 | GenMinMaxFP(invoke->GetLocations(), true, true, GetAssembler(), codegen_); |
Andreas Gampe | 71fb52f | 2014-12-29 17:43:08 -0800 | [diff] [blame] | 489 | } |
| 490 | |
| 491 | void IntrinsicLocationsBuilderX86_64::VisitMathMinFloatFloat(HInvoke* invoke) { |
Mark Mendell | f55c3e0 | 2015-03-26 21:07:46 -0400 | [diff] [blame] | 492 | CreateFPFPToFP(arena_, invoke); |
Andreas Gampe | 71fb52f | 2014-12-29 17:43:08 -0800 | [diff] [blame] | 493 | } |
| 494 | |
| 495 | void IntrinsicCodeGeneratorX86_64::VisitMathMinFloatFloat(HInvoke* invoke) { |
Mark Mendell | f55c3e0 | 2015-03-26 21:07:46 -0400 | [diff] [blame] | 496 | GenMinMaxFP(invoke->GetLocations(), true, false, GetAssembler(), codegen_); |
Andreas Gampe | 71fb52f | 2014-12-29 17:43:08 -0800 | [diff] [blame] | 497 | } |
| 498 | |
| 499 | void IntrinsicLocationsBuilderX86_64::VisitMathMaxDoubleDouble(HInvoke* invoke) { |
Mark Mendell | f55c3e0 | 2015-03-26 21:07:46 -0400 | [diff] [blame] | 500 | CreateFPFPToFP(arena_, invoke); |
Andreas Gampe | 71fb52f | 2014-12-29 17:43:08 -0800 | [diff] [blame] | 501 | } |
| 502 | |
| 503 | void IntrinsicCodeGeneratorX86_64::VisitMathMaxDoubleDouble(HInvoke* invoke) { |
Mark Mendell | f55c3e0 | 2015-03-26 21:07:46 -0400 | [diff] [blame] | 504 | GenMinMaxFP(invoke->GetLocations(), false, true, GetAssembler(), codegen_); |
Andreas Gampe | 71fb52f | 2014-12-29 17:43:08 -0800 | [diff] [blame] | 505 | } |
| 506 | |
| 507 | void IntrinsicLocationsBuilderX86_64::VisitMathMaxFloatFloat(HInvoke* invoke) { |
Mark Mendell | f55c3e0 | 2015-03-26 21:07:46 -0400 | [diff] [blame] | 508 | CreateFPFPToFP(arena_, invoke); |
Andreas Gampe | 71fb52f | 2014-12-29 17:43:08 -0800 | [diff] [blame] | 509 | } |
| 510 | |
| 511 | void IntrinsicCodeGeneratorX86_64::VisitMathMaxFloatFloat(HInvoke* invoke) { |
Mark Mendell | f55c3e0 | 2015-03-26 21:07:46 -0400 | [diff] [blame] | 512 | GenMinMaxFP(invoke->GetLocations(), false, false, GetAssembler(), codegen_); |
Andreas Gampe | 71fb52f | 2014-12-29 17:43:08 -0800 | [diff] [blame] | 513 | } |
| 514 | |
| 515 | static void GenMinMax(LocationSummary* locations, bool is_min, bool is_long, |
| 516 | X86_64Assembler* assembler) { |
| 517 | Location op1_loc = locations->InAt(0); |
| 518 | Location op2_loc = locations->InAt(1); |
| 519 | |
| 520 | // Shortcut for same input locations. |
| 521 | if (op1_loc.Equals(op2_loc)) { |
| 522 | // Can return immediately, as op1_loc == out_loc. |
| 523 | // Note: if we ever support separate registers, e.g., output into memory, we need to check for |
| 524 | // a copy here. |
| 525 | DCHECK(locations->Out().Equals(op1_loc)); |
| 526 | return; |
| 527 | } |
| 528 | |
| 529 | CpuRegister out = locations->Out().AsRegister<CpuRegister>(); |
| 530 | CpuRegister op2 = op2_loc.AsRegister<CpuRegister>(); |
| 531 | |
| 532 | // (out := op1) |
| 533 | // out <=? op2 |
| 534 | // if out is min jmp done |
| 535 | // out := op2 |
| 536 | // done: |
| 537 | |
| 538 | if (is_long) { |
| 539 | __ cmpq(out, op2); |
| 540 | } else { |
| 541 | __ cmpl(out, op2); |
| 542 | } |
| 543 | |
| 544 | __ cmov(is_min ? Condition::kGreater : Condition::kLess, out, op2, is_long); |
| 545 | } |
| 546 | |
| 547 | static void CreateIntIntToIntLocations(ArenaAllocator* arena, HInvoke* invoke) { |
| 548 | LocationSummary* locations = new (arena) LocationSummary(invoke, |
| 549 | LocationSummary::kNoCall, |
| 550 | kIntrinsified); |
| 551 | locations->SetInAt(0, Location::RequiresRegister()); |
| 552 | locations->SetInAt(1, Location::RequiresRegister()); |
| 553 | locations->SetOut(Location::SameAsFirstInput()); |
| 554 | } |
| 555 | |
| 556 | void IntrinsicLocationsBuilderX86_64::VisitMathMinIntInt(HInvoke* invoke) { |
| 557 | CreateIntIntToIntLocations(arena_, invoke); |
| 558 | } |
| 559 | |
| 560 | void IntrinsicCodeGeneratorX86_64::VisitMathMinIntInt(HInvoke* invoke) { |
| 561 | GenMinMax(invoke->GetLocations(), true, false, GetAssembler()); |
| 562 | } |
| 563 | |
| 564 | void IntrinsicLocationsBuilderX86_64::VisitMathMinLongLong(HInvoke* invoke) { |
| 565 | CreateIntIntToIntLocations(arena_, invoke); |
| 566 | } |
| 567 | |
| 568 | void IntrinsicCodeGeneratorX86_64::VisitMathMinLongLong(HInvoke* invoke) { |
| 569 | GenMinMax(invoke->GetLocations(), true, true, GetAssembler()); |
| 570 | } |
| 571 | |
| 572 | void IntrinsicLocationsBuilderX86_64::VisitMathMaxIntInt(HInvoke* invoke) { |
| 573 | CreateIntIntToIntLocations(arena_, invoke); |
| 574 | } |
| 575 | |
| 576 | void IntrinsicCodeGeneratorX86_64::VisitMathMaxIntInt(HInvoke* invoke) { |
| 577 | GenMinMax(invoke->GetLocations(), false, false, GetAssembler()); |
| 578 | } |
| 579 | |
| 580 | void IntrinsicLocationsBuilderX86_64::VisitMathMaxLongLong(HInvoke* invoke) { |
| 581 | CreateIntIntToIntLocations(arena_, invoke); |
| 582 | } |
| 583 | |
| 584 | void IntrinsicCodeGeneratorX86_64::VisitMathMaxLongLong(HInvoke* invoke) { |
| 585 | GenMinMax(invoke->GetLocations(), false, true, GetAssembler()); |
| 586 | } |
| 587 | |
| 588 | static void CreateFPToFPLocations(ArenaAllocator* arena, HInvoke* invoke) { |
| 589 | LocationSummary* locations = new (arena) LocationSummary(invoke, |
| 590 | LocationSummary::kNoCall, |
| 591 | kIntrinsified); |
| 592 | locations->SetInAt(0, Location::RequiresFpuRegister()); |
| 593 | locations->SetOut(Location::RequiresFpuRegister()); |
| 594 | } |
| 595 | |
| 596 | void IntrinsicLocationsBuilderX86_64::VisitMathSqrt(HInvoke* invoke) { |
| 597 | CreateFPToFPLocations(arena_, invoke); |
| 598 | } |
| 599 | |
| 600 | void IntrinsicCodeGeneratorX86_64::VisitMathSqrt(HInvoke* invoke) { |
| 601 | LocationSummary* locations = invoke->GetLocations(); |
| 602 | XmmRegister in = locations->InAt(0).AsFpuRegister<XmmRegister>(); |
| 603 | XmmRegister out = locations->Out().AsFpuRegister<XmmRegister>(); |
| 604 | |
| 605 | GetAssembler()->sqrtsd(out, in); |
| 606 | } |
| 607 | |
Mark Mendell | fb8d279 | 2015-03-31 22:16:59 -0400 | [diff] [blame] | 608 | static void InvokeOutOfLineIntrinsic(CodeGeneratorX86_64* codegen, HInvoke* invoke) { |
Roland Levillain | ec525fc | 2015-04-28 15:50:20 +0100 | [diff] [blame] | 609 | MoveArguments(invoke, codegen); |
Mark Mendell | fb8d279 | 2015-03-31 22:16:59 -0400 | [diff] [blame] | 610 | |
| 611 | DCHECK(invoke->IsInvokeStaticOrDirect()); |
| 612 | codegen->GenerateStaticOrDirectCall(invoke->AsInvokeStaticOrDirect(), CpuRegister(RDI)); |
| 613 | codegen->RecordPcInfo(invoke, invoke->GetDexPc()); |
| 614 | |
| 615 | // Copy the result back to the expected output. |
| 616 | Location out = invoke->GetLocations()->Out(); |
| 617 | if (out.IsValid()) { |
| 618 | DCHECK(out.IsRegister()); |
| 619 | MoveFromReturnRegister(out, invoke->GetType(), codegen); |
| 620 | } |
| 621 | } |
| 622 | |
| 623 | static void CreateSSE41FPToFPLocations(ArenaAllocator* arena, |
| 624 | HInvoke* invoke, |
| 625 | CodeGeneratorX86_64* codegen) { |
| 626 | // Do we have instruction support? |
| 627 | if (codegen->GetInstructionSetFeatures().HasSSE4_1()) { |
| 628 | CreateFPToFPLocations(arena, invoke); |
| 629 | return; |
| 630 | } |
| 631 | |
| 632 | // We have to fall back to a call to the intrinsic. |
| 633 | LocationSummary* locations = new (arena) LocationSummary(invoke, |
| 634 | LocationSummary::kCall); |
| 635 | InvokeRuntimeCallingConvention calling_convention; |
| 636 | locations->SetInAt(0, Location::RegisterLocation(calling_convention.GetFpuRegisterAt(0))); |
| 637 | locations->SetOut(Location::FpuRegisterLocation(XMM0)); |
| 638 | // Needs to be RDI for the invoke. |
| 639 | locations->AddTemp(Location::RegisterLocation(RDI)); |
| 640 | } |
| 641 | |
| 642 | static void GenSSE41FPToFPIntrinsic(CodeGeneratorX86_64* codegen, |
| 643 | HInvoke* invoke, |
| 644 | X86_64Assembler* assembler, |
| 645 | int round_mode) { |
| 646 | LocationSummary* locations = invoke->GetLocations(); |
| 647 | if (locations->WillCall()) { |
| 648 | InvokeOutOfLineIntrinsic(codegen, invoke); |
| 649 | } else { |
| 650 | XmmRegister in = locations->InAt(0).AsFpuRegister<XmmRegister>(); |
| 651 | XmmRegister out = locations->Out().AsFpuRegister<XmmRegister>(); |
| 652 | __ roundsd(out, in, Immediate(round_mode)); |
| 653 | } |
| 654 | } |
| 655 | |
| 656 | void IntrinsicLocationsBuilderX86_64::VisitMathCeil(HInvoke* invoke) { |
| 657 | CreateSSE41FPToFPLocations(arena_, invoke, codegen_); |
| 658 | } |
| 659 | |
| 660 | void IntrinsicCodeGeneratorX86_64::VisitMathCeil(HInvoke* invoke) { |
| 661 | GenSSE41FPToFPIntrinsic(codegen_, invoke, GetAssembler(), 2); |
| 662 | } |
| 663 | |
| 664 | void IntrinsicLocationsBuilderX86_64::VisitMathFloor(HInvoke* invoke) { |
| 665 | CreateSSE41FPToFPLocations(arena_, invoke, codegen_); |
| 666 | } |
| 667 | |
| 668 | void IntrinsicCodeGeneratorX86_64::VisitMathFloor(HInvoke* invoke) { |
| 669 | GenSSE41FPToFPIntrinsic(codegen_, invoke, GetAssembler(), 1); |
| 670 | } |
| 671 | |
| 672 | void IntrinsicLocationsBuilderX86_64::VisitMathRint(HInvoke* invoke) { |
| 673 | CreateSSE41FPToFPLocations(arena_, invoke, codegen_); |
| 674 | } |
| 675 | |
| 676 | void IntrinsicCodeGeneratorX86_64::VisitMathRint(HInvoke* invoke) { |
| 677 | GenSSE41FPToFPIntrinsic(codegen_, invoke, GetAssembler(), 0); |
| 678 | } |
| 679 | |
| 680 | static void CreateSSE41FPToIntLocations(ArenaAllocator* arena, |
| 681 | HInvoke* invoke, |
| 682 | CodeGeneratorX86_64* codegen) { |
| 683 | // Do we have instruction support? |
| 684 | if (codegen->GetInstructionSetFeatures().HasSSE4_1()) { |
| 685 | LocationSummary* locations = new (arena) LocationSummary(invoke, |
| 686 | LocationSummary::kNoCall, |
| 687 | kIntrinsified); |
| 688 | locations->SetInAt(0, Location::RequiresFpuRegister()); |
| 689 | locations->SetOut(Location::RequiresFpuRegister()); |
| 690 | locations->AddTemp(Location::RequiresFpuRegister()); |
Mark Mendell | fb8d279 | 2015-03-31 22:16:59 -0400 | [diff] [blame] | 691 | return; |
| 692 | } |
| 693 | |
| 694 | // We have to fall back to a call to the intrinsic. |
| 695 | LocationSummary* locations = new (arena) LocationSummary(invoke, |
| 696 | LocationSummary::kCall); |
| 697 | InvokeRuntimeCallingConvention calling_convention; |
| 698 | locations->SetInAt(0, Location::RegisterLocation(calling_convention.GetFpuRegisterAt(0))); |
| 699 | locations->SetOut(Location::RegisterLocation(RAX)); |
| 700 | // Needs to be RDI for the invoke. |
| 701 | locations->AddTemp(Location::RegisterLocation(RDI)); |
| 702 | } |
| 703 | |
| 704 | void IntrinsicLocationsBuilderX86_64::VisitMathRoundFloat(HInvoke* invoke) { |
| 705 | CreateSSE41FPToIntLocations(arena_, invoke, codegen_); |
| 706 | } |
| 707 | |
| 708 | void IntrinsicCodeGeneratorX86_64::VisitMathRoundFloat(HInvoke* invoke) { |
| 709 | LocationSummary* locations = invoke->GetLocations(); |
| 710 | if (locations->WillCall()) { |
| 711 | InvokeOutOfLineIntrinsic(codegen_, invoke); |
| 712 | return; |
| 713 | } |
| 714 | |
| 715 | // Implement RoundFloat as t1 = floor(input + 0.5f); convert to int. |
| 716 | XmmRegister in = locations->InAt(0).AsFpuRegister<XmmRegister>(); |
| 717 | CpuRegister out = locations->Out().AsRegister<CpuRegister>(); |
Mark Mendell | 40741f3 | 2015-04-20 22:10:34 -0400 | [diff] [blame] | 718 | XmmRegister inPlusPointFive = locations->GetTemp(0).AsFpuRegister<XmmRegister>(); |
Mark Mendell | fb8d279 | 2015-03-31 22:16:59 -0400 | [diff] [blame] | 719 | Label done, nan; |
| 720 | X86_64Assembler* assembler = GetAssembler(); |
| 721 | |
Mark Mendell | 40741f3 | 2015-04-20 22:10:34 -0400 | [diff] [blame] | 722 | // Load 0.5 into inPlusPointFive. |
| 723 | __ movss(inPlusPointFive, codegen_->LiteralFloatAddress(0.5f)); |
Mark Mendell | fb8d279 | 2015-03-31 22:16:59 -0400 | [diff] [blame] | 724 | |
| 725 | // Add in the input. |
| 726 | __ addss(inPlusPointFive, in); |
| 727 | |
| 728 | // And truncate to an integer. |
| 729 | __ roundss(inPlusPointFive, inPlusPointFive, Immediate(1)); |
| 730 | |
Mark Mendell | fb8d279 | 2015-03-31 22:16:59 -0400 | [diff] [blame] | 731 | // if inPlusPointFive >= maxInt goto done |
Mark Mendell | 40741f3 | 2015-04-20 22:10:34 -0400 | [diff] [blame] | 732 | __ comiss(inPlusPointFive, codegen_->LiteralFloatAddress(static_cast<float>(kPrimIntMax))); |
Mark Mendell | fb8d279 | 2015-03-31 22:16:59 -0400 | [diff] [blame] | 733 | __ j(kAboveEqual, &done); |
| 734 | |
| 735 | // if input == NaN goto nan |
| 736 | __ j(kUnordered, &nan); |
| 737 | |
| 738 | // output = float-to-int-truncate(input) |
| 739 | __ cvttss2si(out, inPlusPointFive); |
| 740 | __ jmp(&done); |
| 741 | __ Bind(&nan); |
| 742 | |
| 743 | // output = 0 |
| 744 | __ xorl(out, out); |
| 745 | __ Bind(&done); |
| 746 | } |
| 747 | |
| 748 | void IntrinsicLocationsBuilderX86_64::VisitMathRoundDouble(HInvoke* invoke) { |
| 749 | CreateSSE41FPToIntLocations(arena_, invoke, codegen_); |
| 750 | } |
| 751 | |
| 752 | void IntrinsicCodeGeneratorX86_64::VisitMathRoundDouble(HInvoke* invoke) { |
| 753 | LocationSummary* locations = invoke->GetLocations(); |
| 754 | if (locations->WillCall()) { |
| 755 | InvokeOutOfLineIntrinsic(codegen_, invoke); |
| 756 | return; |
| 757 | } |
| 758 | |
| 759 | // Implement RoundDouble as t1 = floor(input + 0.5); convert to long. |
| 760 | XmmRegister in = locations->InAt(0).AsFpuRegister<XmmRegister>(); |
| 761 | CpuRegister out = locations->Out().AsRegister<CpuRegister>(); |
Mark Mendell | 40741f3 | 2015-04-20 22:10:34 -0400 | [diff] [blame] | 762 | XmmRegister inPlusPointFive = locations->GetTemp(0).AsFpuRegister<XmmRegister>(); |
Mark Mendell | fb8d279 | 2015-03-31 22:16:59 -0400 | [diff] [blame] | 763 | Label done, nan; |
| 764 | X86_64Assembler* assembler = GetAssembler(); |
| 765 | |
Mark Mendell | 40741f3 | 2015-04-20 22:10:34 -0400 | [diff] [blame] | 766 | // Load 0.5 into inPlusPointFive. |
| 767 | __ movsd(inPlusPointFive, codegen_->LiteralDoubleAddress(0.5)); |
Mark Mendell | fb8d279 | 2015-03-31 22:16:59 -0400 | [diff] [blame] | 768 | |
| 769 | // Add in the input. |
| 770 | __ addsd(inPlusPointFive, in); |
| 771 | |
| 772 | // And truncate to an integer. |
| 773 | __ roundsd(inPlusPointFive, inPlusPointFive, Immediate(1)); |
| 774 | |
Mark Mendell | fb8d279 | 2015-03-31 22:16:59 -0400 | [diff] [blame] | 775 | // if inPlusPointFive >= maxLong goto done |
Mark Mendell | 40741f3 | 2015-04-20 22:10:34 -0400 | [diff] [blame] | 776 | __ comisd(inPlusPointFive, codegen_->LiteralDoubleAddress(static_cast<double>(kPrimLongMax))); |
Mark Mendell | fb8d279 | 2015-03-31 22:16:59 -0400 | [diff] [blame] | 777 | __ j(kAboveEqual, &done); |
| 778 | |
| 779 | // if input == NaN goto nan |
| 780 | __ j(kUnordered, &nan); |
| 781 | |
| 782 | // output = double-to-long-truncate(input) |
| 783 | __ cvttsd2si(out, inPlusPointFive, true); |
| 784 | __ jmp(&done); |
| 785 | __ Bind(&nan); |
| 786 | |
| 787 | // output = 0 |
Mark Mendell | 92e83bf | 2015-05-07 11:25:03 -0400 | [diff] [blame] | 788 | __ xorl(out, out); |
Mark Mendell | fb8d279 | 2015-03-31 22:16:59 -0400 | [diff] [blame] | 789 | __ Bind(&done); |
| 790 | } |
| 791 | |
Andreas Gampe | 71fb52f | 2014-12-29 17:43:08 -0800 | [diff] [blame] | 792 | void IntrinsicLocationsBuilderX86_64::VisitStringCharAt(HInvoke* invoke) { |
| 793 | // The inputs plus one temp. |
| 794 | LocationSummary* locations = new (arena_) LocationSummary(invoke, |
| 795 | LocationSummary::kCallOnSlowPath, |
| 796 | kIntrinsified); |
| 797 | locations->SetInAt(0, Location::RequiresRegister()); |
| 798 | locations->SetInAt(1, Location::RequiresRegister()); |
| 799 | locations->SetOut(Location::SameAsFirstInput()); |
| 800 | locations->AddTemp(Location::RequiresRegister()); |
| 801 | } |
| 802 | |
| 803 | void IntrinsicCodeGeneratorX86_64::VisitStringCharAt(HInvoke* invoke) { |
| 804 | LocationSummary* locations = invoke->GetLocations(); |
| 805 | |
| 806 | // Location of reference to data array |
| 807 | const int32_t value_offset = mirror::String::ValueOffset().Int32Value(); |
| 808 | // Location of count |
| 809 | const int32_t count_offset = mirror::String::CountOffset().Int32Value(); |
Andreas Gampe | 71fb52f | 2014-12-29 17:43:08 -0800 | [diff] [blame] | 810 | |
| 811 | CpuRegister obj = locations->InAt(0).AsRegister<CpuRegister>(); |
| 812 | CpuRegister idx = locations->InAt(1).AsRegister<CpuRegister>(); |
| 813 | CpuRegister out = locations->Out().AsRegister<CpuRegister>(); |
Andreas Gampe | 71fb52f | 2014-12-29 17:43:08 -0800 | [diff] [blame] | 814 | |
Andreas Gampe | 71fb52f | 2014-12-29 17:43:08 -0800 | [diff] [blame] | 815 | // TODO: Maybe we can support range check elimination. Overall, though, I think it's not worth |
| 816 | // the cost. |
| 817 | // TODO: For simplicity, the index parameter is requested in a register, so different from Quick |
| 818 | // we will not optimize the code for constants (which would save a register). |
| 819 | |
Andreas Gampe | 878d58c | 2015-01-15 23:24:00 -0800 | [diff] [blame] | 820 | SlowPathCodeX86_64* slow_path = new (GetAllocator()) IntrinsicSlowPathX86_64(invoke); |
Andreas Gampe | 71fb52f | 2014-12-29 17:43:08 -0800 | [diff] [blame] | 821 | codegen_->AddSlowPath(slow_path); |
| 822 | |
| 823 | X86_64Assembler* assembler = GetAssembler(); |
| 824 | |
| 825 | __ cmpl(idx, Address(obj, count_offset)); |
Andreas Gampe | 878d58c | 2015-01-15 23:24:00 -0800 | [diff] [blame] | 826 | codegen_->MaybeRecordImplicitNullCheck(invoke); |
Andreas Gampe | 71fb52f | 2014-12-29 17:43:08 -0800 | [diff] [blame] | 827 | __ j(kAboveEqual, slow_path->GetEntryLabel()); |
| 828 | |
Jeff Hao | 848f70a | 2014-01-15 13:49:50 -0800 | [diff] [blame] | 829 | // out = out[2*idx]. |
| 830 | __ movzxw(out, Address(out, idx, ScaleFactor::TIMES_2, value_offset)); |
Andreas Gampe | 71fb52f | 2014-12-29 17:43:08 -0800 | [diff] [blame] | 831 | |
| 832 | __ Bind(slow_path->GetExitLabel()); |
| 833 | } |
| 834 | |
Nicolas Geoffray | d75948a | 2015-03-27 09:53:16 +0000 | [diff] [blame] | 835 | void IntrinsicLocationsBuilderX86_64::VisitStringCompareTo(HInvoke* invoke) { |
| 836 | LocationSummary* locations = new (arena_) LocationSummary(invoke, |
| 837 | LocationSummary::kCall, |
| 838 | kIntrinsified); |
| 839 | InvokeRuntimeCallingConvention calling_convention; |
| 840 | locations->SetInAt(0, Location::RegisterLocation(calling_convention.GetRegisterAt(0))); |
| 841 | locations->SetInAt(1, Location::RegisterLocation(calling_convention.GetRegisterAt(1))); |
| 842 | locations->SetOut(Location::RegisterLocation(RAX)); |
| 843 | } |
| 844 | |
| 845 | void IntrinsicCodeGeneratorX86_64::VisitStringCompareTo(HInvoke* invoke) { |
| 846 | X86_64Assembler* assembler = GetAssembler(); |
| 847 | LocationSummary* locations = invoke->GetLocations(); |
| 848 | |
Nicolas Geoffray | 512e04d | 2015-03-27 17:21:24 +0000 | [diff] [blame] | 849 | // Note that the null check must have been done earlier. |
Calin Juravle | 641547a | 2015-04-21 22:08:51 +0100 | [diff] [blame] | 850 | DCHECK(!invoke->CanDoImplicitNullCheckOn(invoke->InputAt(0))); |
Nicolas Geoffray | d75948a | 2015-03-27 09:53:16 +0000 | [diff] [blame] | 851 | |
| 852 | CpuRegister argument = locations->InAt(1).AsRegister<CpuRegister>(); |
| 853 | __ testl(argument, argument); |
| 854 | SlowPathCodeX86_64* slow_path = new (GetAllocator()) IntrinsicSlowPathX86_64(invoke); |
| 855 | codegen_->AddSlowPath(slow_path); |
| 856 | __ j(kEqual, slow_path->GetEntryLabel()); |
| 857 | |
| 858 | __ gs()->call(Address::Absolute( |
| 859 | QUICK_ENTRYPOINT_OFFSET(kX86_64WordSize, pStringCompareTo), true)); |
| 860 | __ Bind(slow_path->GetExitLabel()); |
| 861 | } |
| 862 | |
Andreas Gampe | 21030dd | 2015-05-07 14:46:15 -0700 | [diff] [blame] | 863 | static void CreateStringIndexOfLocations(HInvoke* invoke, |
| 864 | ArenaAllocator* allocator, |
| 865 | bool start_at_zero) { |
| 866 | LocationSummary* locations = new (allocator) LocationSummary(invoke, |
| 867 | LocationSummary::kCallOnSlowPath, |
| 868 | kIntrinsified); |
| 869 | // The data needs to be in RDI for scasw. So request that the string is there, anyways. |
| 870 | locations->SetInAt(0, Location::RegisterLocation(RDI)); |
| 871 | // If we look for a constant char, we'll still have to copy it into RAX. So just request the |
| 872 | // allocator to do that, anyways. We can still do the constant check by checking the parameter |
| 873 | // of the instruction explicitly. |
| 874 | // Note: This works as we don't clobber RAX anywhere. |
| 875 | locations->SetInAt(1, Location::RegisterLocation(RAX)); |
| 876 | if (!start_at_zero) { |
| 877 | locations->SetInAt(2, Location::RequiresRegister()); // The starting index. |
| 878 | } |
| 879 | // As we clobber RDI during execution anyways, also use it as the output. |
| 880 | locations->SetOut(Location::SameAsFirstInput()); |
| 881 | |
| 882 | // repne scasw uses RCX as the counter. |
| 883 | locations->AddTemp(Location::RegisterLocation(RCX)); |
| 884 | // Need another temporary to be able to compute the result. |
| 885 | locations->AddTemp(Location::RequiresRegister()); |
| 886 | } |
| 887 | |
| 888 | static void GenerateStringIndexOf(HInvoke* invoke, |
| 889 | X86_64Assembler* assembler, |
| 890 | CodeGeneratorX86_64* codegen, |
| 891 | ArenaAllocator* allocator, |
| 892 | bool start_at_zero) { |
| 893 | LocationSummary* locations = invoke->GetLocations(); |
| 894 | |
| 895 | // Note that the null check must have been done earlier. |
| 896 | DCHECK(!invoke->CanDoImplicitNullCheckOn(invoke->InputAt(0))); |
| 897 | |
| 898 | CpuRegister string_obj = locations->InAt(0).AsRegister<CpuRegister>(); |
| 899 | CpuRegister search_value = locations->InAt(1).AsRegister<CpuRegister>(); |
| 900 | CpuRegister counter = locations->GetTemp(0).AsRegister<CpuRegister>(); |
| 901 | CpuRegister string_length = locations->GetTemp(1).AsRegister<CpuRegister>(); |
| 902 | CpuRegister out = locations->Out().AsRegister<CpuRegister>(); |
| 903 | |
| 904 | // Check our assumptions for registers. |
| 905 | DCHECK_EQ(string_obj.AsRegister(), RDI); |
| 906 | DCHECK_EQ(search_value.AsRegister(), RAX); |
| 907 | DCHECK_EQ(counter.AsRegister(), RCX); |
| 908 | DCHECK_EQ(out.AsRegister(), RDI); |
| 909 | |
| 910 | // Check for code points > 0xFFFF. Either a slow-path check when we don't know statically, |
| 911 | // or directly dispatch if we have a constant. |
| 912 | SlowPathCodeX86_64* slow_path = nullptr; |
| 913 | if (invoke->InputAt(1)->IsIntConstant()) { |
| 914 | if (static_cast<uint32_t>(invoke->InputAt(1)->AsIntConstant()->GetValue()) > |
| 915 | std::numeric_limits<uint16_t>::max()) { |
| 916 | // Always needs the slow-path. We could directly dispatch to it, but this case should be |
| 917 | // rare, so for simplicity just put the full slow-path down and branch unconditionally. |
| 918 | slow_path = new (allocator) IntrinsicSlowPathX86_64(invoke); |
| 919 | codegen->AddSlowPath(slow_path); |
| 920 | __ jmp(slow_path->GetEntryLabel()); |
| 921 | __ Bind(slow_path->GetExitLabel()); |
| 922 | return; |
| 923 | } |
| 924 | } else { |
| 925 | __ cmpl(search_value, Immediate(std::numeric_limits<uint16_t>::max())); |
| 926 | slow_path = new (allocator) IntrinsicSlowPathX86_64(invoke); |
| 927 | codegen->AddSlowPath(slow_path); |
| 928 | __ j(kAbove, slow_path->GetEntryLabel()); |
| 929 | } |
| 930 | |
| 931 | // From here down, we know that we are looking for a char that fits in 16 bits. |
| 932 | // Location of reference to data array within the String object. |
| 933 | int32_t value_offset = mirror::String::ValueOffset().Int32Value(); |
| 934 | // Location of count within the String object. |
| 935 | int32_t count_offset = mirror::String::CountOffset().Int32Value(); |
| 936 | |
| 937 | // Load string length, i.e., the count field of the string. |
| 938 | __ movl(string_length, Address(string_obj, count_offset)); |
| 939 | |
| 940 | // Do a length check. |
| 941 | // TODO: Support jecxz. |
| 942 | Label not_found_label; |
| 943 | __ testl(string_length, string_length); |
| 944 | __ j(kEqual, ¬_found_label); |
| 945 | |
| 946 | if (start_at_zero) { |
| 947 | // Number of chars to scan is the same as the string length. |
| 948 | __ movl(counter, string_length); |
| 949 | |
| 950 | // Move to the start of the string. |
| 951 | __ addq(string_obj, Immediate(value_offset)); |
| 952 | } else { |
| 953 | CpuRegister start_index = locations->InAt(2).AsRegister<CpuRegister>(); |
| 954 | |
| 955 | // Do a start_index check. |
| 956 | __ cmpl(start_index, string_length); |
| 957 | __ j(kGreaterEqual, ¬_found_label); |
| 958 | |
| 959 | // Ensure we have a start index >= 0; |
| 960 | __ xorl(counter, counter); |
| 961 | __ cmpl(start_index, Immediate(0)); |
| 962 | __ cmov(kGreater, counter, start_index, false); // 32-bit copy is enough. |
| 963 | |
| 964 | // Move to the start of the string: string_obj + value_offset + 2 * start_index. |
| 965 | __ leaq(string_obj, Address(string_obj, counter, ScaleFactor::TIMES_2, value_offset)); |
| 966 | |
| 967 | // Now update ecx, the work counter: it's gonna be string.length - start_index. |
| 968 | __ negq(counter); // Needs to be 64-bit negation, as the address computation is 64-bit. |
| 969 | __ leaq(counter, Address(string_length, counter, ScaleFactor::TIMES_1, 0)); |
| 970 | } |
| 971 | |
| 972 | // Everything is set up for repne scasw: |
| 973 | // * Comparison address in RDI. |
| 974 | // * Counter in ECX. |
| 975 | __ repne_scasw(); |
| 976 | |
| 977 | // Did we find a match? |
| 978 | __ j(kNotEqual, ¬_found_label); |
| 979 | |
| 980 | // Yes, we matched. Compute the index of the result. |
| 981 | __ subl(string_length, counter); |
| 982 | __ leal(out, Address(string_length, -1)); |
| 983 | |
| 984 | Label done; |
| 985 | __ jmp(&done); |
| 986 | |
| 987 | // Failed to match; return -1. |
| 988 | __ Bind(¬_found_label); |
| 989 | __ movl(out, Immediate(-1)); |
| 990 | |
| 991 | // And join up at the end. |
| 992 | __ Bind(&done); |
| 993 | if (slow_path != nullptr) { |
| 994 | __ Bind(slow_path->GetExitLabel()); |
| 995 | } |
| 996 | } |
| 997 | |
| 998 | void IntrinsicLocationsBuilderX86_64::VisitStringIndexOf(HInvoke* invoke) { |
| 999 | CreateStringIndexOfLocations(invoke, arena_, true); |
| 1000 | } |
| 1001 | |
| 1002 | void IntrinsicCodeGeneratorX86_64::VisitStringIndexOf(HInvoke* invoke) { |
| 1003 | GenerateStringIndexOf(invoke, GetAssembler(), codegen_, GetAllocator(), true); |
| 1004 | } |
| 1005 | |
| 1006 | void IntrinsicLocationsBuilderX86_64::VisitStringIndexOfAfter(HInvoke* invoke) { |
| 1007 | CreateStringIndexOfLocations(invoke, arena_, false); |
| 1008 | } |
| 1009 | |
| 1010 | void IntrinsicCodeGeneratorX86_64::VisitStringIndexOfAfter(HInvoke* invoke) { |
| 1011 | GenerateStringIndexOf(invoke, GetAssembler(), codegen_, GetAllocator(), false); |
| 1012 | } |
| 1013 | |
Jeff Hao | 848f70a | 2014-01-15 13:49:50 -0800 | [diff] [blame] | 1014 | void IntrinsicLocationsBuilderX86_64::VisitStringNewStringFromBytes(HInvoke* invoke) { |
| 1015 | LocationSummary* locations = new (arena_) LocationSummary(invoke, |
| 1016 | LocationSummary::kCall, |
| 1017 | kIntrinsified); |
| 1018 | InvokeRuntimeCallingConvention calling_convention; |
| 1019 | locations->SetInAt(0, Location::RegisterLocation(calling_convention.GetRegisterAt(0))); |
| 1020 | locations->SetInAt(1, Location::RegisterLocation(calling_convention.GetRegisterAt(1))); |
| 1021 | locations->SetInAt(2, Location::RegisterLocation(calling_convention.GetRegisterAt(2))); |
| 1022 | locations->SetInAt(3, Location::RegisterLocation(calling_convention.GetRegisterAt(3))); |
| 1023 | locations->SetOut(Location::RegisterLocation(RAX)); |
| 1024 | } |
| 1025 | |
| 1026 | void IntrinsicCodeGeneratorX86_64::VisitStringNewStringFromBytes(HInvoke* invoke) { |
| 1027 | X86_64Assembler* assembler = GetAssembler(); |
| 1028 | LocationSummary* locations = invoke->GetLocations(); |
| 1029 | |
| 1030 | CpuRegister byte_array = locations->InAt(0).AsRegister<CpuRegister>(); |
| 1031 | __ testl(byte_array, byte_array); |
| 1032 | SlowPathCodeX86_64* slow_path = new (GetAllocator()) IntrinsicSlowPathX86_64(invoke); |
| 1033 | codegen_->AddSlowPath(slow_path); |
| 1034 | __ j(kEqual, slow_path->GetEntryLabel()); |
| 1035 | |
| 1036 | __ gs()->call(Address::Absolute( |
| 1037 | QUICK_ENTRYPOINT_OFFSET(kX86_64WordSize, pAllocStringFromBytes), true)); |
| 1038 | codegen_->RecordPcInfo(invoke, invoke->GetDexPc()); |
| 1039 | __ Bind(slow_path->GetExitLabel()); |
| 1040 | } |
| 1041 | |
| 1042 | void IntrinsicLocationsBuilderX86_64::VisitStringNewStringFromChars(HInvoke* invoke) { |
| 1043 | LocationSummary* locations = new (arena_) LocationSummary(invoke, |
| 1044 | LocationSummary::kCall, |
| 1045 | kIntrinsified); |
| 1046 | InvokeRuntimeCallingConvention calling_convention; |
| 1047 | locations->SetInAt(0, Location::RegisterLocation(calling_convention.GetRegisterAt(0))); |
| 1048 | locations->SetInAt(1, Location::RegisterLocation(calling_convention.GetRegisterAt(1))); |
| 1049 | locations->SetInAt(2, Location::RegisterLocation(calling_convention.GetRegisterAt(2))); |
| 1050 | locations->SetOut(Location::RegisterLocation(RAX)); |
| 1051 | } |
| 1052 | |
| 1053 | void IntrinsicCodeGeneratorX86_64::VisitStringNewStringFromChars(HInvoke* invoke) { |
| 1054 | X86_64Assembler* assembler = GetAssembler(); |
| 1055 | |
| 1056 | __ gs()->call(Address::Absolute( |
| 1057 | QUICK_ENTRYPOINT_OFFSET(kX86_64WordSize, pAllocStringFromChars), true)); |
| 1058 | codegen_->RecordPcInfo(invoke, invoke->GetDexPc()); |
| 1059 | } |
| 1060 | |
| 1061 | void IntrinsicLocationsBuilderX86_64::VisitStringNewStringFromString(HInvoke* invoke) { |
| 1062 | LocationSummary* locations = new (arena_) LocationSummary(invoke, |
| 1063 | LocationSummary::kCall, |
| 1064 | kIntrinsified); |
| 1065 | InvokeRuntimeCallingConvention calling_convention; |
| 1066 | locations->SetInAt(0, Location::RegisterLocation(calling_convention.GetRegisterAt(0))); |
| 1067 | locations->SetOut(Location::RegisterLocation(RAX)); |
| 1068 | } |
| 1069 | |
| 1070 | void IntrinsicCodeGeneratorX86_64::VisitStringNewStringFromString(HInvoke* invoke) { |
| 1071 | X86_64Assembler* assembler = GetAssembler(); |
| 1072 | LocationSummary* locations = invoke->GetLocations(); |
| 1073 | |
| 1074 | CpuRegister string_to_copy = locations->InAt(0).AsRegister<CpuRegister>(); |
| 1075 | __ testl(string_to_copy, string_to_copy); |
| 1076 | SlowPathCodeX86_64* slow_path = new (GetAllocator()) IntrinsicSlowPathX86_64(invoke); |
| 1077 | codegen_->AddSlowPath(slow_path); |
| 1078 | __ j(kEqual, slow_path->GetEntryLabel()); |
| 1079 | |
| 1080 | __ gs()->call(Address::Absolute( |
| 1081 | QUICK_ENTRYPOINT_OFFSET(kX86_64WordSize, pAllocStringFromString), true)); |
| 1082 | codegen_->RecordPcInfo(invoke, invoke->GetDexPc()); |
| 1083 | __ Bind(slow_path->GetExitLabel()); |
| 1084 | } |
| 1085 | |
Andreas Gampe | 71fb52f | 2014-12-29 17:43:08 -0800 | [diff] [blame] | 1086 | static void GenPeek(LocationSummary* locations, Primitive::Type size, X86_64Assembler* assembler) { |
| 1087 | CpuRegister address = locations->InAt(0).AsRegister<CpuRegister>(); |
| 1088 | CpuRegister out = locations->Out().AsRegister<CpuRegister>(); // == address, here for clarity. |
| 1089 | // x86 allows unaligned access. We do not have to check the input or use specific instructions |
| 1090 | // to avoid a SIGBUS. |
| 1091 | switch (size) { |
| 1092 | case Primitive::kPrimByte: |
| 1093 | __ movsxb(out, Address(address, 0)); |
| 1094 | break; |
| 1095 | case Primitive::kPrimShort: |
| 1096 | __ movsxw(out, Address(address, 0)); |
| 1097 | break; |
| 1098 | case Primitive::kPrimInt: |
| 1099 | __ movl(out, Address(address, 0)); |
| 1100 | break; |
| 1101 | case Primitive::kPrimLong: |
| 1102 | __ movq(out, Address(address, 0)); |
| 1103 | break; |
| 1104 | default: |
| 1105 | LOG(FATAL) << "Type not recognized for peek: " << size; |
| 1106 | UNREACHABLE(); |
| 1107 | } |
| 1108 | } |
| 1109 | |
| 1110 | void IntrinsicLocationsBuilderX86_64::VisitMemoryPeekByte(HInvoke* invoke) { |
| 1111 | CreateIntToIntLocations(arena_, invoke); |
| 1112 | } |
| 1113 | |
| 1114 | void IntrinsicCodeGeneratorX86_64::VisitMemoryPeekByte(HInvoke* invoke) { |
| 1115 | GenPeek(invoke->GetLocations(), Primitive::kPrimByte, GetAssembler()); |
| 1116 | } |
| 1117 | |
| 1118 | void IntrinsicLocationsBuilderX86_64::VisitMemoryPeekIntNative(HInvoke* invoke) { |
| 1119 | CreateIntToIntLocations(arena_, invoke); |
| 1120 | } |
| 1121 | |
| 1122 | void IntrinsicCodeGeneratorX86_64::VisitMemoryPeekIntNative(HInvoke* invoke) { |
| 1123 | GenPeek(invoke->GetLocations(), Primitive::kPrimInt, GetAssembler()); |
| 1124 | } |
| 1125 | |
| 1126 | void IntrinsicLocationsBuilderX86_64::VisitMemoryPeekLongNative(HInvoke* invoke) { |
| 1127 | CreateIntToIntLocations(arena_, invoke); |
| 1128 | } |
| 1129 | |
| 1130 | void IntrinsicCodeGeneratorX86_64::VisitMemoryPeekLongNative(HInvoke* invoke) { |
| 1131 | GenPeek(invoke->GetLocations(), Primitive::kPrimLong, GetAssembler()); |
| 1132 | } |
| 1133 | |
| 1134 | void IntrinsicLocationsBuilderX86_64::VisitMemoryPeekShortNative(HInvoke* invoke) { |
| 1135 | CreateIntToIntLocations(arena_, invoke); |
| 1136 | } |
| 1137 | |
| 1138 | void IntrinsicCodeGeneratorX86_64::VisitMemoryPeekShortNative(HInvoke* invoke) { |
| 1139 | GenPeek(invoke->GetLocations(), Primitive::kPrimShort, GetAssembler()); |
| 1140 | } |
| 1141 | |
| 1142 | static void CreateIntIntToVoidLocations(ArenaAllocator* arena, HInvoke* invoke) { |
| 1143 | LocationSummary* locations = new (arena) LocationSummary(invoke, |
| 1144 | LocationSummary::kNoCall, |
| 1145 | kIntrinsified); |
| 1146 | locations->SetInAt(0, Location::RequiresRegister()); |
Mark Mendell | 40741f3 | 2015-04-20 22:10:34 -0400 | [diff] [blame] | 1147 | locations->SetInAt(1, Location::RegisterOrInt32LongConstant(invoke->InputAt(1))); |
Andreas Gampe | 71fb52f | 2014-12-29 17:43:08 -0800 | [diff] [blame] | 1148 | } |
| 1149 | |
| 1150 | static void GenPoke(LocationSummary* locations, Primitive::Type size, X86_64Assembler* assembler) { |
| 1151 | CpuRegister address = locations->InAt(0).AsRegister<CpuRegister>(); |
Mark Mendell | 40741f3 | 2015-04-20 22:10:34 -0400 | [diff] [blame] | 1152 | Location value = locations->InAt(1); |
Andreas Gampe | 71fb52f | 2014-12-29 17:43:08 -0800 | [diff] [blame] | 1153 | // x86 allows unaligned access. We do not have to check the input or use specific instructions |
| 1154 | // to avoid a SIGBUS. |
| 1155 | switch (size) { |
| 1156 | case Primitive::kPrimByte: |
Mark Mendell | 40741f3 | 2015-04-20 22:10:34 -0400 | [diff] [blame] | 1157 | if (value.IsConstant()) { |
| 1158 | __ movb(Address(address, 0), |
| 1159 | Immediate(CodeGenerator::GetInt32ValueOf(value.GetConstant()))); |
| 1160 | } else { |
| 1161 | __ movb(Address(address, 0), value.AsRegister<CpuRegister>()); |
| 1162 | } |
Andreas Gampe | 71fb52f | 2014-12-29 17:43:08 -0800 | [diff] [blame] | 1163 | break; |
| 1164 | case Primitive::kPrimShort: |
Mark Mendell | 40741f3 | 2015-04-20 22:10:34 -0400 | [diff] [blame] | 1165 | if (value.IsConstant()) { |
| 1166 | __ movw(Address(address, 0), |
| 1167 | Immediate(CodeGenerator::GetInt32ValueOf(value.GetConstant()))); |
| 1168 | } else { |
| 1169 | __ movw(Address(address, 0), value.AsRegister<CpuRegister>()); |
| 1170 | } |
Andreas Gampe | 71fb52f | 2014-12-29 17:43:08 -0800 | [diff] [blame] | 1171 | break; |
| 1172 | case Primitive::kPrimInt: |
Mark Mendell | 40741f3 | 2015-04-20 22:10:34 -0400 | [diff] [blame] | 1173 | if (value.IsConstant()) { |
| 1174 | __ movl(Address(address, 0), |
| 1175 | Immediate(CodeGenerator::GetInt32ValueOf(value.GetConstant()))); |
| 1176 | } else { |
| 1177 | __ movl(Address(address, 0), value.AsRegister<CpuRegister>()); |
| 1178 | } |
Andreas Gampe | 71fb52f | 2014-12-29 17:43:08 -0800 | [diff] [blame] | 1179 | break; |
| 1180 | case Primitive::kPrimLong: |
Mark Mendell | 40741f3 | 2015-04-20 22:10:34 -0400 | [diff] [blame] | 1181 | if (value.IsConstant()) { |
| 1182 | int64_t v = value.GetConstant()->AsLongConstant()->GetValue(); |
| 1183 | DCHECK(IsInt<32>(v)); |
| 1184 | int32_t v_32 = v; |
| 1185 | __ movq(Address(address, 0), Immediate(v_32)); |
| 1186 | } else { |
| 1187 | __ movq(Address(address, 0), value.AsRegister<CpuRegister>()); |
| 1188 | } |
Andreas Gampe | 71fb52f | 2014-12-29 17:43:08 -0800 | [diff] [blame] | 1189 | break; |
| 1190 | default: |
| 1191 | LOG(FATAL) << "Type not recognized for poke: " << size; |
| 1192 | UNREACHABLE(); |
| 1193 | } |
| 1194 | } |
| 1195 | |
| 1196 | void IntrinsicLocationsBuilderX86_64::VisitMemoryPokeByte(HInvoke* invoke) { |
| 1197 | CreateIntIntToVoidLocations(arena_, invoke); |
| 1198 | } |
| 1199 | |
| 1200 | void IntrinsicCodeGeneratorX86_64::VisitMemoryPokeByte(HInvoke* invoke) { |
| 1201 | GenPoke(invoke->GetLocations(), Primitive::kPrimByte, GetAssembler()); |
| 1202 | } |
| 1203 | |
| 1204 | void IntrinsicLocationsBuilderX86_64::VisitMemoryPokeIntNative(HInvoke* invoke) { |
| 1205 | CreateIntIntToVoidLocations(arena_, invoke); |
| 1206 | } |
| 1207 | |
| 1208 | void IntrinsicCodeGeneratorX86_64::VisitMemoryPokeIntNative(HInvoke* invoke) { |
| 1209 | GenPoke(invoke->GetLocations(), Primitive::kPrimInt, GetAssembler()); |
| 1210 | } |
| 1211 | |
| 1212 | void IntrinsicLocationsBuilderX86_64::VisitMemoryPokeLongNative(HInvoke* invoke) { |
| 1213 | CreateIntIntToVoidLocations(arena_, invoke); |
| 1214 | } |
| 1215 | |
| 1216 | void IntrinsicCodeGeneratorX86_64::VisitMemoryPokeLongNative(HInvoke* invoke) { |
| 1217 | GenPoke(invoke->GetLocations(), Primitive::kPrimLong, GetAssembler()); |
| 1218 | } |
| 1219 | |
| 1220 | void IntrinsicLocationsBuilderX86_64::VisitMemoryPokeShortNative(HInvoke* invoke) { |
| 1221 | CreateIntIntToVoidLocations(arena_, invoke); |
| 1222 | } |
| 1223 | |
| 1224 | void IntrinsicCodeGeneratorX86_64::VisitMemoryPokeShortNative(HInvoke* invoke) { |
| 1225 | GenPoke(invoke->GetLocations(), Primitive::kPrimShort, GetAssembler()); |
| 1226 | } |
| 1227 | |
| 1228 | void IntrinsicLocationsBuilderX86_64::VisitThreadCurrentThread(HInvoke* invoke) { |
| 1229 | LocationSummary* locations = new (arena_) LocationSummary(invoke, |
| 1230 | LocationSummary::kNoCall, |
| 1231 | kIntrinsified); |
| 1232 | locations->SetOut(Location::RequiresRegister()); |
| 1233 | } |
| 1234 | |
| 1235 | void IntrinsicCodeGeneratorX86_64::VisitThreadCurrentThread(HInvoke* invoke) { |
| 1236 | CpuRegister out = invoke->GetLocations()->Out().AsRegister<CpuRegister>(); |
| 1237 | GetAssembler()->gs()->movl(out, Address::Absolute(Thread::PeerOffset<kX86_64WordSize>(), true)); |
| 1238 | } |
| 1239 | |
Andreas Gampe | 878d58c | 2015-01-15 23:24:00 -0800 | [diff] [blame] | 1240 | static void GenUnsafeGet(LocationSummary* locations, Primitive::Type type, |
Andreas Gampe | 71fb52f | 2014-12-29 17:43:08 -0800 | [diff] [blame] | 1241 | bool is_volatile ATTRIBUTE_UNUSED, X86_64Assembler* assembler) { |
| 1242 | CpuRegister base = locations->InAt(1).AsRegister<CpuRegister>(); |
| 1243 | CpuRegister offset = locations->InAt(2).AsRegister<CpuRegister>(); |
| 1244 | CpuRegister trg = locations->Out().AsRegister<CpuRegister>(); |
| 1245 | |
Andreas Gampe | 878d58c | 2015-01-15 23:24:00 -0800 | [diff] [blame] | 1246 | switch (type) { |
| 1247 | case Primitive::kPrimInt: |
| 1248 | case Primitive::kPrimNot: |
| 1249 | __ movl(trg, Address(base, offset, ScaleFactor::TIMES_1, 0)); |
| 1250 | break; |
| 1251 | |
| 1252 | case Primitive::kPrimLong: |
| 1253 | __ movq(trg, Address(base, offset, ScaleFactor::TIMES_1, 0)); |
| 1254 | break; |
| 1255 | |
| 1256 | default: |
| 1257 | LOG(FATAL) << "Unsupported op size " << type; |
| 1258 | UNREACHABLE(); |
Andreas Gampe | 71fb52f | 2014-12-29 17:43:08 -0800 | [diff] [blame] | 1259 | } |
| 1260 | } |
| 1261 | |
| 1262 | static void CreateIntIntIntToIntLocations(ArenaAllocator* arena, HInvoke* invoke) { |
| 1263 | LocationSummary* locations = new (arena) LocationSummary(invoke, |
| 1264 | LocationSummary::kNoCall, |
| 1265 | kIntrinsified); |
Andreas Gampe | 878d58c | 2015-01-15 23:24:00 -0800 | [diff] [blame] | 1266 | locations->SetInAt(0, Location::NoLocation()); // Unused receiver. |
Andreas Gampe | 71fb52f | 2014-12-29 17:43:08 -0800 | [diff] [blame] | 1267 | locations->SetInAt(1, Location::RequiresRegister()); |
| 1268 | locations->SetInAt(2, Location::RequiresRegister()); |
Andreas Gampe | 878d58c | 2015-01-15 23:24:00 -0800 | [diff] [blame] | 1269 | locations->SetOut(Location::RequiresRegister()); |
Andreas Gampe | 71fb52f | 2014-12-29 17:43:08 -0800 | [diff] [blame] | 1270 | } |
| 1271 | |
| 1272 | void IntrinsicLocationsBuilderX86_64::VisitUnsafeGet(HInvoke* invoke) { |
| 1273 | CreateIntIntIntToIntLocations(arena_, invoke); |
| 1274 | } |
| 1275 | void IntrinsicLocationsBuilderX86_64::VisitUnsafeGetVolatile(HInvoke* invoke) { |
| 1276 | CreateIntIntIntToIntLocations(arena_, invoke); |
| 1277 | } |
| 1278 | void IntrinsicLocationsBuilderX86_64::VisitUnsafeGetLong(HInvoke* invoke) { |
| 1279 | CreateIntIntIntToIntLocations(arena_, invoke); |
| 1280 | } |
| 1281 | void IntrinsicLocationsBuilderX86_64::VisitUnsafeGetLongVolatile(HInvoke* invoke) { |
| 1282 | CreateIntIntIntToIntLocations(arena_, invoke); |
| 1283 | } |
Andreas Gampe | 878d58c | 2015-01-15 23:24:00 -0800 | [diff] [blame] | 1284 | void IntrinsicLocationsBuilderX86_64::VisitUnsafeGetObject(HInvoke* invoke) { |
| 1285 | CreateIntIntIntToIntLocations(arena_, invoke); |
| 1286 | } |
| 1287 | void IntrinsicLocationsBuilderX86_64::VisitUnsafeGetObjectVolatile(HInvoke* invoke) { |
| 1288 | CreateIntIntIntToIntLocations(arena_, invoke); |
| 1289 | } |
| 1290 | |
Andreas Gampe | 71fb52f | 2014-12-29 17:43:08 -0800 | [diff] [blame] | 1291 | |
| 1292 | void IntrinsicCodeGeneratorX86_64::VisitUnsafeGet(HInvoke* invoke) { |
Andreas Gampe | 878d58c | 2015-01-15 23:24:00 -0800 | [diff] [blame] | 1293 | GenUnsafeGet(invoke->GetLocations(), Primitive::kPrimInt, false, GetAssembler()); |
Andreas Gampe | 71fb52f | 2014-12-29 17:43:08 -0800 | [diff] [blame] | 1294 | } |
| 1295 | void IntrinsicCodeGeneratorX86_64::VisitUnsafeGetVolatile(HInvoke* invoke) { |
Andreas Gampe | 878d58c | 2015-01-15 23:24:00 -0800 | [diff] [blame] | 1296 | GenUnsafeGet(invoke->GetLocations(), Primitive::kPrimInt, true, GetAssembler()); |
Andreas Gampe | 71fb52f | 2014-12-29 17:43:08 -0800 | [diff] [blame] | 1297 | } |
| 1298 | void IntrinsicCodeGeneratorX86_64::VisitUnsafeGetLong(HInvoke* invoke) { |
Andreas Gampe | 878d58c | 2015-01-15 23:24:00 -0800 | [diff] [blame] | 1299 | GenUnsafeGet(invoke->GetLocations(), Primitive::kPrimLong, false, GetAssembler()); |
Andreas Gampe | 71fb52f | 2014-12-29 17:43:08 -0800 | [diff] [blame] | 1300 | } |
| 1301 | void IntrinsicCodeGeneratorX86_64::VisitUnsafeGetLongVolatile(HInvoke* invoke) { |
Andreas Gampe | 878d58c | 2015-01-15 23:24:00 -0800 | [diff] [blame] | 1302 | GenUnsafeGet(invoke->GetLocations(), Primitive::kPrimLong, true, GetAssembler()); |
Andreas Gampe | 71fb52f | 2014-12-29 17:43:08 -0800 | [diff] [blame] | 1303 | } |
Andreas Gampe | 878d58c | 2015-01-15 23:24:00 -0800 | [diff] [blame] | 1304 | void IntrinsicCodeGeneratorX86_64::VisitUnsafeGetObject(HInvoke* invoke) { |
| 1305 | GenUnsafeGet(invoke->GetLocations(), Primitive::kPrimNot, false, GetAssembler()); |
| 1306 | } |
| 1307 | void IntrinsicCodeGeneratorX86_64::VisitUnsafeGetObjectVolatile(HInvoke* invoke) { |
| 1308 | GenUnsafeGet(invoke->GetLocations(), Primitive::kPrimNot, true, GetAssembler()); |
| 1309 | } |
| 1310 | |
Andreas Gampe | 71fb52f | 2014-12-29 17:43:08 -0800 | [diff] [blame] | 1311 | |
| 1312 | static void CreateIntIntIntIntToVoidPlusTempsLocations(ArenaAllocator* arena, |
| 1313 | Primitive::Type type, |
| 1314 | HInvoke* invoke) { |
| 1315 | LocationSummary* locations = new (arena) LocationSummary(invoke, |
| 1316 | LocationSummary::kNoCall, |
| 1317 | kIntrinsified); |
Andreas Gampe | 878d58c | 2015-01-15 23:24:00 -0800 | [diff] [blame] | 1318 | locations->SetInAt(0, Location::NoLocation()); // Unused receiver. |
Andreas Gampe | 71fb52f | 2014-12-29 17:43:08 -0800 | [diff] [blame] | 1319 | locations->SetInAt(1, Location::RequiresRegister()); |
| 1320 | locations->SetInAt(2, Location::RequiresRegister()); |
| 1321 | locations->SetInAt(3, Location::RequiresRegister()); |
| 1322 | if (type == Primitive::kPrimNot) { |
| 1323 | // Need temp registers for card-marking. |
| 1324 | locations->AddTemp(Location::RequiresRegister()); |
| 1325 | locations->AddTemp(Location::RequiresRegister()); |
| 1326 | } |
| 1327 | } |
| 1328 | |
| 1329 | void IntrinsicLocationsBuilderX86_64::VisitUnsafePut(HInvoke* invoke) { |
| 1330 | CreateIntIntIntIntToVoidPlusTempsLocations(arena_, Primitive::kPrimInt, invoke); |
| 1331 | } |
| 1332 | void IntrinsicLocationsBuilderX86_64::VisitUnsafePutOrdered(HInvoke* invoke) { |
| 1333 | CreateIntIntIntIntToVoidPlusTempsLocations(arena_, Primitive::kPrimInt, invoke); |
| 1334 | } |
| 1335 | void IntrinsicLocationsBuilderX86_64::VisitUnsafePutVolatile(HInvoke* invoke) { |
| 1336 | CreateIntIntIntIntToVoidPlusTempsLocations(arena_, Primitive::kPrimInt, invoke); |
| 1337 | } |
| 1338 | void IntrinsicLocationsBuilderX86_64::VisitUnsafePutObject(HInvoke* invoke) { |
| 1339 | CreateIntIntIntIntToVoidPlusTempsLocations(arena_, Primitive::kPrimNot, invoke); |
| 1340 | } |
| 1341 | void IntrinsicLocationsBuilderX86_64::VisitUnsafePutObjectOrdered(HInvoke* invoke) { |
| 1342 | CreateIntIntIntIntToVoidPlusTempsLocations(arena_, Primitive::kPrimNot, invoke); |
| 1343 | } |
| 1344 | void IntrinsicLocationsBuilderX86_64::VisitUnsafePutObjectVolatile(HInvoke* invoke) { |
| 1345 | CreateIntIntIntIntToVoidPlusTempsLocations(arena_, Primitive::kPrimNot, invoke); |
| 1346 | } |
| 1347 | void IntrinsicLocationsBuilderX86_64::VisitUnsafePutLong(HInvoke* invoke) { |
| 1348 | CreateIntIntIntIntToVoidPlusTempsLocations(arena_, Primitive::kPrimLong, invoke); |
| 1349 | } |
| 1350 | void IntrinsicLocationsBuilderX86_64::VisitUnsafePutLongOrdered(HInvoke* invoke) { |
| 1351 | CreateIntIntIntIntToVoidPlusTempsLocations(arena_, Primitive::kPrimLong, invoke); |
| 1352 | } |
| 1353 | void IntrinsicLocationsBuilderX86_64::VisitUnsafePutLongVolatile(HInvoke* invoke) { |
| 1354 | CreateIntIntIntIntToVoidPlusTempsLocations(arena_, Primitive::kPrimLong, invoke); |
| 1355 | } |
| 1356 | |
| 1357 | // We don't care for ordered: it requires an AnyStore barrier, which is already given by the x86 |
| 1358 | // memory model. |
| 1359 | static void GenUnsafePut(LocationSummary* locations, Primitive::Type type, bool is_volatile, |
| 1360 | CodeGeneratorX86_64* codegen) { |
| 1361 | X86_64Assembler* assembler = reinterpret_cast<X86_64Assembler*>(codegen->GetAssembler()); |
| 1362 | CpuRegister base = locations->InAt(1).AsRegister<CpuRegister>(); |
| 1363 | CpuRegister offset = locations->InAt(2).AsRegister<CpuRegister>(); |
| 1364 | CpuRegister value = locations->InAt(3).AsRegister<CpuRegister>(); |
| 1365 | |
| 1366 | if (type == Primitive::kPrimLong) { |
| 1367 | __ movq(Address(base, offset, ScaleFactor::TIMES_1, 0), value); |
| 1368 | } else { |
| 1369 | __ movl(Address(base, offset, ScaleFactor::TIMES_1, 0), value); |
| 1370 | } |
| 1371 | |
| 1372 | if (is_volatile) { |
| 1373 | __ mfence(); |
| 1374 | } |
| 1375 | |
| 1376 | if (type == Primitive::kPrimNot) { |
| 1377 | codegen->MarkGCCard(locations->GetTemp(0).AsRegister<CpuRegister>(), |
| 1378 | locations->GetTemp(1).AsRegister<CpuRegister>(), |
| 1379 | base, |
| 1380 | value); |
| 1381 | } |
| 1382 | } |
| 1383 | |
| 1384 | void IntrinsicCodeGeneratorX86_64::VisitUnsafePut(HInvoke* invoke) { |
| 1385 | GenUnsafePut(invoke->GetLocations(), Primitive::kPrimInt, false, codegen_); |
| 1386 | } |
| 1387 | void IntrinsicCodeGeneratorX86_64::VisitUnsafePutOrdered(HInvoke* invoke) { |
| 1388 | GenUnsafePut(invoke->GetLocations(), Primitive::kPrimInt, false, codegen_); |
| 1389 | } |
| 1390 | void IntrinsicCodeGeneratorX86_64::VisitUnsafePutVolatile(HInvoke* invoke) { |
| 1391 | GenUnsafePut(invoke->GetLocations(), Primitive::kPrimInt, true, codegen_); |
| 1392 | } |
| 1393 | void IntrinsicCodeGeneratorX86_64::VisitUnsafePutObject(HInvoke* invoke) { |
| 1394 | GenUnsafePut(invoke->GetLocations(), Primitive::kPrimNot, false, codegen_); |
| 1395 | } |
| 1396 | void IntrinsicCodeGeneratorX86_64::VisitUnsafePutObjectOrdered(HInvoke* invoke) { |
| 1397 | GenUnsafePut(invoke->GetLocations(), Primitive::kPrimNot, false, codegen_); |
| 1398 | } |
| 1399 | void IntrinsicCodeGeneratorX86_64::VisitUnsafePutObjectVolatile(HInvoke* invoke) { |
| 1400 | GenUnsafePut(invoke->GetLocations(), Primitive::kPrimNot, true, codegen_); |
| 1401 | } |
| 1402 | void IntrinsicCodeGeneratorX86_64::VisitUnsafePutLong(HInvoke* invoke) { |
| 1403 | GenUnsafePut(invoke->GetLocations(), Primitive::kPrimLong, false, codegen_); |
| 1404 | } |
| 1405 | void IntrinsicCodeGeneratorX86_64::VisitUnsafePutLongOrdered(HInvoke* invoke) { |
| 1406 | GenUnsafePut(invoke->GetLocations(), Primitive::kPrimLong, false, codegen_); |
| 1407 | } |
| 1408 | void IntrinsicCodeGeneratorX86_64::VisitUnsafePutLongVolatile(HInvoke* invoke) { |
| 1409 | GenUnsafePut(invoke->GetLocations(), Primitive::kPrimLong, true, codegen_); |
| 1410 | } |
| 1411 | |
Mark Mendell | 58d25fd | 2015-04-03 14:52:31 -0400 | [diff] [blame] | 1412 | static void CreateIntIntIntIntIntToInt(ArenaAllocator* arena, Primitive::Type type, |
| 1413 | HInvoke* invoke) { |
| 1414 | LocationSummary* locations = new (arena) LocationSummary(invoke, |
| 1415 | LocationSummary::kNoCall, |
| 1416 | kIntrinsified); |
| 1417 | locations->SetInAt(0, Location::NoLocation()); // Unused receiver. |
| 1418 | locations->SetInAt(1, Location::RequiresRegister()); |
| 1419 | locations->SetInAt(2, Location::RequiresRegister()); |
| 1420 | // expected value must be in EAX/RAX. |
| 1421 | locations->SetInAt(3, Location::RegisterLocation(RAX)); |
| 1422 | locations->SetInAt(4, Location::RequiresRegister()); |
| 1423 | |
| 1424 | locations->SetOut(Location::RequiresRegister()); |
| 1425 | if (type == Primitive::kPrimNot) { |
| 1426 | // Need temp registers for card-marking. |
| 1427 | locations->AddTemp(Location::RequiresRegister()); |
| 1428 | locations->AddTemp(Location::RequiresRegister()); |
| 1429 | } |
| 1430 | } |
| 1431 | |
| 1432 | void IntrinsicLocationsBuilderX86_64::VisitUnsafeCASInt(HInvoke* invoke) { |
| 1433 | CreateIntIntIntIntIntToInt(arena_, Primitive::kPrimInt, invoke); |
| 1434 | } |
| 1435 | |
| 1436 | void IntrinsicLocationsBuilderX86_64::VisitUnsafeCASLong(HInvoke* invoke) { |
| 1437 | CreateIntIntIntIntIntToInt(arena_, Primitive::kPrimLong, invoke); |
| 1438 | } |
| 1439 | |
| 1440 | void IntrinsicLocationsBuilderX86_64::VisitUnsafeCASObject(HInvoke* invoke) { |
| 1441 | CreateIntIntIntIntIntToInt(arena_, Primitive::kPrimNot, invoke); |
| 1442 | } |
| 1443 | |
| 1444 | static void GenCAS(Primitive::Type type, HInvoke* invoke, CodeGeneratorX86_64* codegen) { |
| 1445 | X86_64Assembler* assembler = |
| 1446 | reinterpret_cast<X86_64Assembler*>(codegen->GetAssembler()); |
| 1447 | LocationSummary* locations = invoke->GetLocations(); |
| 1448 | |
| 1449 | CpuRegister base = locations->InAt(1).AsRegister<CpuRegister>(); |
| 1450 | CpuRegister offset = locations->InAt(2).AsRegister<CpuRegister>(); |
| 1451 | CpuRegister expected = locations->InAt(3).AsRegister<CpuRegister>(); |
| 1452 | DCHECK_EQ(expected.AsRegister(), RAX); |
| 1453 | CpuRegister value = locations->InAt(4).AsRegister<CpuRegister>(); |
| 1454 | CpuRegister out = locations->Out().AsRegister<CpuRegister>(); |
| 1455 | |
| 1456 | if (type == Primitive::kPrimLong) { |
| 1457 | __ LockCmpxchgq(Address(base, offset, TIMES_1, 0), value); |
| 1458 | } else { |
| 1459 | // Integer or object. |
| 1460 | if (type == Primitive::kPrimNot) { |
| 1461 | // Mark card for object assuming new value is stored. |
| 1462 | codegen->MarkGCCard(locations->GetTemp(0).AsRegister<CpuRegister>(), |
| 1463 | locations->GetTemp(1).AsRegister<CpuRegister>(), |
| 1464 | base, |
| 1465 | value); |
| 1466 | } |
| 1467 | |
| 1468 | __ LockCmpxchgl(Address(base, offset, TIMES_1, 0), value); |
| 1469 | } |
| 1470 | |
| 1471 | // locked cmpxchg has full barrier semantics, and we don't need scheduling |
| 1472 | // barriers at this time. |
| 1473 | |
| 1474 | // Convert ZF into the boolean result. |
| 1475 | __ setcc(kZero, out); |
| 1476 | __ movzxb(out, out); |
| 1477 | } |
| 1478 | |
| 1479 | void IntrinsicCodeGeneratorX86_64::VisitUnsafeCASInt(HInvoke* invoke) { |
| 1480 | GenCAS(Primitive::kPrimInt, invoke, codegen_); |
| 1481 | } |
| 1482 | |
| 1483 | void IntrinsicCodeGeneratorX86_64::VisitUnsafeCASLong(HInvoke* invoke) { |
| 1484 | GenCAS(Primitive::kPrimLong, invoke, codegen_); |
| 1485 | } |
| 1486 | |
| 1487 | void IntrinsicCodeGeneratorX86_64::VisitUnsafeCASObject(HInvoke* invoke) { |
| 1488 | GenCAS(Primitive::kPrimNot, invoke, codegen_); |
| 1489 | } |
| 1490 | |
| 1491 | void IntrinsicLocationsBuilderX86_64::VisitIntegerReverse(HInvoke* invoke) { |
| 1492 | LocationSummary* locations = new (arena_) LocationSummary(invoke, |
| 1493 | LocationSummary::kNoCall, |
| 1494 | kIntrinsified); |
| 1495 | locations->SetInAt(0, Location::RequiresRegister()); |
| 1496 | locations->SetOut(Location::SameAsFirstInput()); |
| 1497 | locations->AddTemp(Location::RequiresRegister()); |
| 1498 | } |
| 1499 | |
| 1500 | static void SwapBits(CpuRegister reg, CpuRegister temp, int32_t shift, int32_t mask, |
| 1501 | X86_64Assembler* assembler) { |
| 1502 | Immediate imm_shift(shift); |
| 1503 | Immediate imm_mask(mask); |
| 1504 | __ movl(temp, reg); |
| 1505 | __ shrl(reg, imm_shift); |
| 1506 | __ andl(temp, imm_mask); |
| 1507 | __ andl(reg, imm_mask); |
| 1508 | __ shll(temp, imm_shift); |
| 1509 | __ orl(reg, temp); |
| 1510 | } |
| 1511 | |
| 1512 | void IntrinsicCodeGeneratorX86_64::VisitIntegerReverse(HInvoke* invoke) { |
| 1513 | X86_64Assembler* assembler = |
| 1514 | reinterpret_cast<X86_64Assembler*>(codegen_->GetAssembler()); |
| 1515 | LocationSummary* locations = invoke->GetLocations(); |
| 1516 | |
| 1517 | CpuRegister reg = locations->InAt(0).AsRegister<CpuRegister>(); |
| 1518 | CpuRegister temp = locations->GetTemp(0).AsRegister<CpuRegister>(); |
| 1519 | |
| 1520 | /* |
| 1521 | * Use one bswap instruction to reverse byte order first and then use 3 rounds of |
| 1522 | * swapping bits to reverse bits in a number x. Using bswap to save instructions |
| 1523 | * compared to generic luni implementation which has 5 rounds of swapping bits. |
| 1524 | * x = bswap x |
| 1525 | * x = (x & 0x55555555) << 1 | (x >> 1) & 0x55555555; |
| 1526 | * x = (x & 0x33333333) << 2 | (x >> 2) & 0x33333333; |
| 1527 | * x = (x & 0x0F0F0F0F) << 4 | (x >> 4) & 0x0F0F0F0F; |
| 1528 | */ |
| 1529 | __ bswapl(reg); |
| 1530 | SwapBits(reg, temp, 1, 0x55555555, assembler); |
| 1531 | SwapBits(reg, temp, 2, 0x33333333, assembler); |
| 1532 | SwapBits(reg, temp, 4, 0x0f0f0f0f, assembler); |
| 1533 | } |
| 1534 | |
| 1535 | void IntrinsicLocationsBuilderX86_64::VisitLongReverse(HInvoke* invoke) { |
| 1536 | LocationSummary* locations = new (arena_) LocationSummary(invoke, |
| 1537 | LocationSummary::kNoCall, |
| 1538 | kIntrinsified); |
| 1539 | locations->SetInAt(0, Location::RequiresRegister()); |
| 1540 | locations->SetOut(Location::SameAsFirstInput()); |
| 1541 | locations->AddTemp(Location::RequiresRegister()); |
| 1542 | locations->AddTemp(Location::RequiresRegister()); |
| 1543 | } |
| 1544 | |
| 1545 | static void SwapBits64(CpuRegister reg, CpuRegister temp, CpuRegister temp_mask, |
| 1546 | int32_t shift, int64_t mask, X86_64Assembler* assembler) { |
| 1547 | Immediate imm_shift(shift); |
| 1548 | __ movq(temp_mask, Immediate(mask)); |
| 1549 | __ movq(temp, reg); |
| 1550 | __ shrq(reg, imm_shift); |
| 1551 | __ andq(temp, temp_mask); |
| 1552 | __ andq(reg, temp_mask); |
| 1553 | __ shlq(temp, imm_shift); |
| 1554 | __ orq(reg, temp); |
| 1555 | } |
| 1556 | |
| 1557 | void IntrinsicCodeGeneratorX86_64::VisitLongReverse(HInvoke* invoke) { |
| 1558 | X86_64Assembler* assembler = |
| 1559 | reinterpret_cast<X86_64Assembler*>(codegen_->GetAssembler()); |
| 1560 | LocationSummary* locations = invoke->GetLocations(); |
| 1561 | |
| 1562 | CpuRegister reg = locations->InAt(0).AsRegister<CpuRegister>(); |
| 1563 | CpuRegister temp1 = locations->GetTemp(0).AsRegister<CpuRegister>(); |
| 1564 | CpuRegister temp2 = locations->GetTemp(1).AsRegister<CpuRegister>(); |
| 1565 | |
| 1566 | /* |
| 1567 | * Use one bswap instruction to reverse byte order first and then use 3 rounds of |
| 1568 | * swapping bits to reverse bits in a long number x. Using bswap to save instructions |
| 1569 | * compared to generic luni implementation which has 5 rounds of swapping bits. |
| 1570 | * x = bswap x |
| 1571 | * x = (x & 0x5555555555555555) << 1 | (x >> 1) & 0x5555555555555555; |
| 1572 | * x = (x & 0x3333333333333333) << 2 | (x >> 2) & 0x3333333333333333; |
| 1573 | * x = (x & 0x0F0F0F0F0F0F0F0F) << 4 | (x >> 4) & 0x0F0F0F0F0F0F0F0F; |
| 1574 | */ |
| 1575 | __ bswapq(reg); |
| 1576 | SwapBits64(reg, temp1, temp2, 1, INT64_C(0x5555555555555555), assembler); |
| 1577 | SwapBits64(reg, temp1, temp2, 2, INT64_C(0x3333333333333333), assembler); |
| 1578 | SwapBits64(reg, temp1, temp2, 4, INT64_C(0x0f0f0f0f0f0f0f0f), assembler); |
| 1579 | } |
| 1580 | |
Andreas Gampe | 71fb52f | 2014-12-29 17:43:08 -0800 | [diff] [blame] | 1581 | // Unimplemented intrinsics. |
| 1582 | |
| 1583 | #define UNIMPLEMENTED_INTRINSIC(Name) \ |
| 1584 | void IntrinsicLocationsBuilderX86_64::Visit ## Name(HInvoke* invoke ATTRIBUTE_UNUSED) { \ |
| 1585 | } \ |
| 1586 | void IntrinsicCodeGeneratorX86_64::Visit ## Name(HInvoke* invoke ATTRIBUTE_UNUSED) { \ |
| 1587 | } |
| 1588 | |
Jeff Hao | 848f70a | 2014-01-15 13:49:50 -0800 | [diff] [blame] | 1589 | UNIMPLEMENTED_INTRINSIC(StringGetCharsNoCheck) |
Andreas Gampe | 71fb52f | 2014-12-29 17:43:08 -0800 | [diff] [blame] | 1590 | UNIMPLEMENTED_INTRINSIC(SystemArrayCopyChar) |
Andreas Gampe | 71fb52f | 2014-12-29 17:43:08 -0800 | [diff] [blame] | 1591 | UNIMPLEMENTED_INTRINSIC(ReferenceGetReferent) |
| 1592 | |
| 1593 | } // namespace x86_64 |
| 1594 | } // namespace art |