| File: | var/lib/jenkins/workspace/firefox-scan-build/js/src/jit/BaselineIC.cpp |
| Warning: | line 1826, column 5 Value stored to 'valueOffset' is never read |
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| 1 | /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- |
| 2 | * vim: set ts=8 sts=2 et sw=2 tw=80: |
| 3 | * This Source Code Form is subject to the terms of the Mozilla Public |
| 4 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| 5 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| 6 | |
| 7 | #include "jit/BaselineIC.h" |
| 8 | |
| 9 | #include "mozilla/DebugOnly.h" |
| 10 | #include "mozilla/Sprintf.h" |
| 11 | |
| 12 | #include "jstypes.h" |
| 13 | |
| 14 | #include "builtin/Eval.h" |
| 15 | #include "jit/BaselineCacheIRCompiler.h" |
| 16 | #include "jit/CacheIRGenerator.h" |
| 17 | #include "jit/CacheIRHealth.h" |
| 18 | #include "jit/JitFrames.h" |
| 19 | #include "jit/JitRuntime.h" |
| 20 | #include "jit/JitSpewer.h" |
| 21 | #include "jit/Linker.h" |
| 22 | #include "jit/PerfSpewer.h" |
| 23 | #include "jit/SharedICHelpers.h" |
| 24 | #include "jit/SharedICRegisters.h" |
| 25 | #include "jit/VMFunctions.h" |
| 26 | #include "js/Conversions.h" |
| 27 | #include "js/friend/ErrorMessages.h" // JSMSG_* |
| 28 | #include "vm/BytecodeIterator.h" |
| 29 | #include "vm/BytecodeLocation.h" |
| 30 | #include "vm/BytecodeUtil.h" |
| 31 | #include "vm/EqualityOperations.h" |
| 32 | #include "vm/JSFunction.h" |
| 33 | #include "vm/JSScript.h" |
| 34 | #include "vm/Opcodes.h" |
| 35 | #include "vm/TypeofEqOperand.h" // TypeofEqOperand |
| 36 | #ifdef MOZ_VTUNE1 |
| 37 | # include "vtune/VTuneWrapper.h" |
| 38 | #endif |
| 39 | |
| 40 | #include "jit/MacroAssembler-inl.h" |
| 41 | #include "jit/SharedICHelpers-inl.h" |
| 42 | #include "jit/VMFunctionList-inl.h" |
| 43 | #include "vm/BytecodeIterator-inl.h" |
| 44 | #include "vm/BytecodeLocation-inl.h" |
| 45 | #include "vm/EnvironmentObject-inl.h" |
| 46 | #include "vm/Interpreter-inl.h" |
| 47 | #include "vm/JSScript-inl.h" |
| 48 | |
| 49 | using mozilla::DebugOnly; |
| 50 | |
| 51 | namespace js { |
| 52 | namespace jit { |
| 53 | |
| 54 | // Class used to emit all Baseline IC fallback code when initializing the |
| 55 | // JitRuntime. |
| 56 | class MOZ_RAII FallbackICCodeCompiler final { |
| 57 | BaselineICFallbackCode& code; |
| 58 | MacroAssembler& masm; |
| 59 | |
| 60 | JSContext* cx; |
| 61 | bool inStubFrame_ = false; |
| 62 | |
| 63 | #ifdef DEBUG1 |
| 64 | bool entersStubFrame_ = false; |
| 65 | uint32_t framePushedAtEnterStubFrame_ = 0; |
| 66 | #endif |
| 67 | |
| 68 | [[nodiscard]] bool emitCall(bool isSpread, bool isConstructing); |
| 69 | [[nodiscard]] bool emitGetElem(bool hasReceiver); |
| 70 | [[nodiscard]] bool emitGetProp(bool hasReceiver); |
| 71 | |
| 72 | public: |
| 73 | FallbackICCodeCompiler(JSContext* cx, BaselineICFallbackCode& code, |
| 74 | MacroAssembler& masm) |
| 75 | : code(code), masm(masm), cx(cx) {} |
| 76 | |
| 77 | #define DEF_METHOD(kind) [[nodiscard]] bool emit_##kind(); |
| 78 | IC_BASELINE_FALLBACK_CODE_KIND_LIST(DEF_METHOD)DEF_METHOD(NewArray) DEF_METHOD(NewObject) DEF_METHOD(ToBool) DEF_METHOD(UnaryArith) DEF_METHOD(Call) DEF_METHOD(CallConstructing ) DEF_METHOD(SpreadCall) DEF_METHOD(SpreadCallConstructing) DEF_METHOD (GetElem) DEF_METHOD(GetElemSuper) DEF_METHOD(SetElem) DEF_METHOD (In) DEF_METHOD(HasOwn) DEF_METHOD(CheckPrivateField) DEF_METHOD (GetName) DEF_METHOD(BindName) DEF_METHOD(GetIntrinsic) DEF_METHOD (SetProp) DEF_METHOD(GetIterator) DEF_METHOD(OptimizeSpreadCall ) DEF_METHOD(InstanceOf) DEF_METHOD(TypeOf) DEF_METHOD(TypeOfEq ) DEF_METHOD(ToPropertyKey) DEF_METHOD(Rest) DEF_METHOD(BinaryArith ) DEF_METHOD(Compare) DEF_METHOD(GetProp) DEF_METHOD(GetPropSuper ) DEF_METHOD(CloseIter) DEF_METHOD(OptimizeGetIterator) |
| 79 | #undef DEF_METHOD |
| 80 | |
| 81 | void pushCallArguments(MacroAssembler& masm, |
| 82 | AllocatableGeneralRegisterSet regs, Register argcReg, |
| 83 | bool isConstructing); |
| 84 | |
| 85 | // Push a payload specialized per compiler needed to execute stubs. |
| 86 | void PushStubPayload(MacroAssembler& masm, Register scratch); |
| 87 | void pushStubPayload(MacroAssembler& masm, Register scratch); |
| 88 | |
| 89 | // Emits a tail call to a VMFunction wrapper. |
| 90 | [[nodiscard]] bool tailCallVMInternal(MacroAssembler& masm, VMFunctionId id); |
| 91 | |
| 92 | template <typename Fn, Fn fn> |
| 93 | [[nodiscard]] bool tailCallVM(MacroAssembler& masm); |
| 94 | |
| 95 | // Emits a normal (non-tail) call to a VMFunction wrapper. |
| 96 | [[nodiscard]] bool callVMInternal(MacroAssembler& masm, VMFunctionId id); |
| 97 | |
| 98 | template <typename Fn, Fn fn> |
| 99 | [[nodiscard]] bool callVM(MacroAssembler& masm); |
| 100 | |
| 101 | // A stub frame is used when a stub wants to call into the VM without |
| 102 | // performing a tail call. This is required for the return address |
| 103 | // to pc mapping to work. |
| 104 | void enterStubFrame(MacroAssembler& masm, Register scratch); |
| 105 | void assumeStubFrame(); |
| 106 | void leaveStubFrame(MacroAssembler& masm); |
| 107 | }; |
| 108 | |
| 109 | AllocatableGeneralRegisterSet BaselineICAvailableGeneralRegs(size_t numInputs) { |
| 110 | AllocatableGeneralRegisterSet regs(GeneralRegisterSet::All()); |
| 111 | MOZ_ASSERT(!regs.has(FramePointer))do { static_assert( mozilla::detail::AssertionConditionType< decltype(!regs.has(FramePointer))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(!regs.has(FramePointer)))), 0 ))) { do { } while (false); MOZ_ReportAssertionFailure("!regs.has(FramePointer)" , "/var/lib/jenkins/workspace/firefox-scan-build/js/src/jit/BaselineIC.cpp" , 111); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!regs.has(FramePointer)" ")"); do { *((volatile int*)__null) = 111; __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 112 | #if defined(JS_CODEGEN_ARM) |
| 113 | MOZ_ASSERT(!regs.has(ICTailCallReg))do { static_assert( mozilla::detail::AssertionConditionType< decltype(!regs.has(ICTailCallReg))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(!regs.has(ICTailCallReg)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!regs.has(ICTailCallReg)" , "/var/lib/jenkins/workspace/firefox-scan-build/js/src/jit/BaselineIC.cpp" , 113); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!regs.has(ICTailCallReg)" ")"); do { *((volatile int*)__null) = 113; __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 114 | regs.take(BaselineSecondScratchReg); |
| 115 | #elif defined(JS_CODEGEN_MIPS32) || defined(JS_CODEGEN_MIPS64) |
| 116 | MOZ_ASSERT(!regs.has(ICTailCallReg))do { static_assert( mozilla::detail::AssertionConditionType< decltype(!regs.has(ICTailCallReg))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(!regs.has(ICTailCallReg)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!regs.has(ICTailCallReg)" , "/var/lib/jenkins/workspace/firefox-scan-build/js/src/jit/BaselineIC.cpp" , 116); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!regs.has(ICTailCallReg)" ")"); do { *((volatile int*)__null) = 116; __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 117 | MOZ_ASSERT(!regs.has(BaselineSecondScratchReg))do { static_assert( mozilla::detail::AssertionConditionType< decltype(!regs.has(BaselineSecondScratchReg))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(!regs.has(BaselineSecondScratchReg )))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("!regs.has(BaselineSecondScratchReg)", "/var/lib/jenkins/workspace/firefox-scan-build/js/src/jit/BaselineIC.cpp" , 117); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!regs.has(BaselineSecondScratchReg)" ")"); do { *((volatile int*)__null) = 117; __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 118 | #elif defined(JS_CODEGEN_ARM64) |
| 119 | MOZ_ASSERT(!regs.has(PseudoStackPointer))do { static_assert( mozilla::detail::AssertionConditionType< decltype(!regs.has(PseudoStackPointer))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(!regs.has(PseudoStackPointer )))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("!regs.has(PseudoStackPointer)", "/var/lib/jenkins/workspace/firefox-scan-build/js/src/jit/BaselineIC.cpp" , 119); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!regs.has(PseudoStackPointer)" ")"); do { *((volatile int*)__null) = 119; __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 120 | MOZ_ASSERT(!regs.has(RealStackPointer))do { static_assert( mozilla::detail::AssertionConditionType< decltype(!regs.has(RealStackPointer))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(!regs.has(RealStackPointer)) )), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!regs.has(RealStackPointer)" , "/var/lib/jenkins/workspace/firefox-scan-build/js/src/jit/BaselineIC.cpp" , 120); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!regs.has(RealStackPointer)" ")"); do { *((volatile int*)__null) = 120; __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 121 | MOZ_ASSERT(!regs.has(ICTailCallReg))do { static_assert( mozilla::detail::AssertionConditionType< decltype(!regs.has(ICTailCallReg))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(!regs.has(ICTailCallReg)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!regs.has(ICTailCallReg)" , "/var/lib/jenkins/workspace/firefox-scan-build/js/src/jit/BaselineIC.cpp" , 121); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!regs.has(ICTailCallReg)" ")"); do { *((volatile int*)__null) = 121; __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 122 | #endif |
| 123 | regs.take(ICStubReg); |
| 124 | |
| 125 | switch (numInputs) { |
| 126 | case 0: |
| 127 | break; |
| 128 | case 1: |
| 129 | regs.take(R0); |
| 130 | break; |
| 131 | case 2: |
| 132 | regs.take(R0); |
| 133 | regs.take(R1); |
| 134 | break; |
| 135 | default: |
| 136 | MOZ_CRASH("Invalid numInputs")do { do { } while (false); MOZ_ReportCrash("" "Invalid numInputs" , "/var/lib/jenkins/workspace/firefox-scan-build/js/src/jit/BaselineIC.cpp" , 136); AnnotateMozCrashReason("MOZ_CRASH(" "Invalid numInputs" ")"); do { *((volatile int*)__null) = 136; __attribute__((nomerge )) ::abort(); } while (false); } while (false); |
| 137 | } |
| 138 | |
| 139 | return regs; |
| 140 | } |
| 141 | |
| 142 | static jsbytecode* StubOffsetToPc(const ICFallbackStub* stub, |
| 143 | const JSScript* script) { |
| 144 | return script->offsetToPC(stub->pcOffset()); |
| 145 | } |
| 146 | |
| 147 | #ifdef JS_JITSPEW1 |
| 148 | void FallbackICSpew(JSContext* cx, ICFallbackStub* stub, const char* fmt, ...) { |
| 149 | if (JitSpewEnabled(JitSpew_BaselineICFallback)) { |
| 150 | RootedScript script(cx, GetTopJitJSScript(cx)); |
| 151 | jsbytecode* pc = StubOffsetToPc(stub, script); |
| 152 | |
| 153 | char fmtbuf[100]; |
| 154 | va_list args; |
| 155 | va_start(args, fmt)__builtin_va_start(args, fmt); |
| 156 | (void)VsprintfLiteral(fmtbuf, fmt, args); |
| 157 | va_end(args)__builtin_va_end(args); |
| 158 | |
| 159 | JitSpew( |
| 160 | JitSpew_BaselineICFallback, |
| 161 | "Fallback hit for (%s:%u:%u) (pc=%zu,line=%u,uses=%u,stubs=%zu): %s", |
| 162 | script->filename(), script->lineno(), script->column().oneOriginValue(), |
| 163 | script->pcToOffset(pc), PCToLineNumber(script, pc), |
| 164 | script->getWarmUpCount(), stub->numOptimizedStubs(), fmtbuf); |
| 165 | } |
| 166 | } |
| 167 | #endif // JS_JITSPEW |
| 168 | |
| 169 | void ICEntry::trace(JSTracer* trc) { |
| 170 | ICStub* stub = firstStub(); |
| 171 | |
| 172 | // Trace CacheIR stubs. |
| 173 | while (!stub->isFallback()) { |
| 174 | stub->toCacheIRStub()->trace(trc); |
| 175 | stub = stub->toCacheIRStub()->next(); |
| 176 | } |
| 177 | |
| 178 | // Fallback stubs use runtime-wide trampoline code we don't need to trace. |
| 179 | MOZ_ASSERT(stub->usesTrampolineCode())do { static_assert( mozilla::detail::AssertionConditionType< decltype(stub->usesTrampolineCode())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(stub->usesTrampolineCode( )))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("stub->usesTrampolineCode()", "/var/lib/jenkins/workspace/firefox-scan-build/js/src/jit/BaselineIC.cpp" , 179); AnnotateMozCrashReason("MOZ_ASSERT" "(" "stub->usesTrampolineCode()" ")"); do { *((volatile int*)__null) = 179; __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 180 | } |
| 181 | |
| 182 | inline ICFallbackStub* GetFallbackStub(ICEntry* entry) { |
| 183 | ICStub* stub = entry->firstStub(); |
| 184 | while (!stub->isFallback()) { |
| 185 | stub = stub->toCacheIRStub()->next(); |
| 186 | } |
| 187 | return stub->toFallbackStub(); |
| 188 | } |
| 189 | |
| 190 | bool ICEntry::traceWeak(JSTracer* trc) { |
| 191 | // Trace CacheIR stubs and remove those containing weak pointers to dead GC |
| 192 | // things. Prebarriers are not necessary because this happens as part of GC. |
| 193 | |
| 194 | ICFallbackStub* fallbackStub = GetFallbackStub(this); |
| 195 | |
| 196 | ICStub* stub = firstStub(); |
| 197 | ICCacheIRStub* prev = nullptr; |
| 198 | bool allSurvived = true; |
| 199 | while (!stub->isFallback()) { |
| 200 | ICCacheIRStub* cacheIRStub = stub->toCacheIRStub(); |
| 201 | if (!cacheIRStub->traceWeak(trc)) { |
| 202 | fallbackStub->unlinkStubUnbarriered(this, prev, cacheIRStub); |
| 203 | allSurvived = false; |
| 204 | } else { |
| 205 | prev = cacheIRStub; |
| 206 | } |
| 207 | |
| 208 | stub = cacheIRStub->next(); |
| 209 | MOZ_ASSERT_IF(prev, prev->next() == stub)do { if (prev) { do { static_assert( mozilla::detail::AssertionConditionType <decltype(prev->next() == stub)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(prev->next() == stub))), 0 ))) { do { } while (false); MOZ_ReportAssertionFailure("prev->next() == stub" , "/var/lib/jenkins/workspace/firefox-scan-build/js/src/jit/BaselineIC.cpp" , 209); AnnotateMozCrashReason("MOZ_ASSERT" "(" "prev->next() == stub" ")"); do { *((volatile int*)__null) = 209; __attribute__((nomerge )) ::abort(); } while (false); } } while (false); } } while ( false); |
| 210 | } |
| 211 | |
| 212 | // Clear the folded stubs flag if we know for sure that there are none |
| 213 | // left. The flag will remain set if we have removed all folded stubs but |
| 214 | // other stubs remain. |
| 215 | if (fallbackStub->numOptimizedStubs() == 0 && |
| 216 | fallbackStub->mayHaveFoldedStub()) { |
| 217 | fallbackStub->clearMayHaveFoldedStub(); |
| 218 | } |
| 219 | |
| 220 | #ifdef DEBUG1 |
| 221 | size_t count = 0; |
| 222 | for (ICStub* stub = firstStub(); stub != fallbackStub; |
| 223 | stub = stub->toCacheIRStub()->next()) { |
| 224 | count++; |
| 225 | } |
| 226 | MOZ_ASSERT(count == fallbackStub->state().numOptimizedStubs())do { static_assert( mozilla::detail::AssertionConditionType< decltype(count == fallbackStub->state().numOptimizedStubs( ))>::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(count == fallbackStub->state().numOptimizedStubs( )))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("count == fallbackStub->state().numOptimizedStubs()", "/var/lib/jenkins/workspace/firefox-scan-build/js/src/jit/BaselineIC.cpp" , 226); AnnotateMozCrashReason("MOZ_ASSERT" "(" "count == fallbackStub->state().numOptimizedStubs()" ")"); do { *((volatile int*)__null) = 226; __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 227 | #endif |
| 228 | |
| 229 | return allSurvived; |
| 230 | } |
| 231 | |
| 232 | // constexpr table mapping JSOp to BaselineICFallbackKind. Each value in the |
| 233 | // table is either a fallback kind or a sentinel value (NoICValue) indicating |
| 234 | // the JSOp is not a JOF_IC op. |
| 235 | class MOZ_STATIC_CLASS OpToFallbackKindTable { |
| 236 | static_assert(sizeof(BaselineICFallbackKind) == sizeof(uint8_t)); |
| 237 | uint8_t table_[JSOP_LIMIT] = {}; |
| 238 | |
| 239 | constexpr void setKind(JSOp op, BaselineICFallbackKind kind) { |
| 240 | MOZ_ASSERT(uint8_t(kind) != NoICValue)do { static_assert( mozilla::detail::AssertionConditionType< decltype(uint8_t(kind) != NoICValue)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(uint8_t(kind) != NoICValue)) ), 0))) { do { } while (false); MOZ_ReportAssertionFailure("uint8_t(kind) != NoICValue" , "/var/lib/jenkins/workspace/firefox-scan-build/js/src/jit/BaselineIC.cpp" , 240); AnnotateMozCrashReason("MOZ_ASSERT" "(" "uint8_t(kind) != NoICValue" ")"); do { *((volatile int*)__null) = 240; __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 241 | table_[size_t(op)] = uint8_t(kind); |
| 242 | } |
| 243 | |
| 244 | public: |
| 245 | static constexpr uint8_t NoICValue = uint8_t(BaselineICFallbackKind::Count); |
| 246 | |
| 247 | uint8_t lookup(JSOp op) const { return table_[size_t(op)]; } |
| 248 | |
| 249 | constexpr OpToFallbackKindTable() { |
| 250 | for (size_t i = 0; i < JSOP_LIMIT; i++) { |
| 251 | table_[i] = NoICValue; |
| 252 | } |
| 253 | |
| 254 | setKind(JSOp::Not, BaselineICFallbackKind::ToBool); |
| 255 | setKind(JSOp::And, BaselineICFallbackKind::ToBool); |
| 256 | setKind(JSOp::Or, BaselineICFallbackKind::ToBool); |
| 257 | setKind(JSOp::JumpIfTrue, BaselineICFallbackKind::ToBool); |
| 258 | setKind(JSOp::JumpIfFalse, BaselineICFallbackKind::ToBool); |
| 259 | |
| 260 | setKind(JSOp::BitNot, BaselineICFallbackKind::UnaryArith); |
| 261 | setKind(JSOp::Pos, BaselineICFallbackKind::UnaryArith); |
| 262 | setKind(JSOp::Neg, BaselineICFallbackKind::UnaryArith); |
| 263 | setKind(JSOp::Inc, BaselineICFallbackKind::UnaryArith); |
| 264 | setKind(JSOp::Dec, BaselineICFallbackKind::UnaryArith); |
| 265 | setKind(JSOp::ToNumeric, BaselineICFallbackKind::UnaryArith); |
| 266 | |
| 267 | setKind(JSOp::BitOr, BaselineICFallbackKind::BinaryArith); |
| 268 | setKind(JSOp::BitXor, BaselineICFallbackKind::BinaryArith); |
| 269 | setKind(JSOp::BitAnd, BaselineICFallbackKind::BinaryArith); |
| 270 | setKind(JSOp::Lsh, BaselineICFallbackKind::BinaryArith); |
| 271 | setKind(JSOp::Rsh, BaselineICFallbackKind::BinaryArith); |
| 272 | setKind(JSOp::Ursh, BaselineICFallbackKind::BinaryArith); |
| 273 | setKind(JSOp::Add, BaselineICFallbackKind::BinaryArith); |
| 274 | setKind(JSOp::Sub, BaselineICFallbackKind::BinaryArith); |
| 275 | setKind(JSOp::Mul, BaselineICFallbackKind::BinaryArith); |
| 276 | setKind(JSOp::Div, BaselineICFallbackKind::BinaryArith); |
| 277 | setKind(JSOp::Mod, BaselineICFallbackKind::BinaryArith); |
| 278 | setKind(JSOp::Pow, BaselineICFallbackKind::BinaryArith); |
| 279 | |
| 280 | setKind(JSOp::Eq, BaselineICFallbackKind::Compare); |
| 281 | setKind(JSOp::Ne, BaselineICFallbackKind::Compare); |
| 282 | setKind(JSOp::Lt, BaselineICFallbackKind::Compare); |
| 283 | setKind(JSOp::Le, BaselineICFallbackKind::Compare); |
| 284 | setKind(JSOp::Gt, BaselineICFallbackKind::Compare); |
| 285 | setKind(JSOp::Ge, BaselineICFallbackKind::Compare); |
| 286 | setKind(JSOp::StrictEq, BaselineICFallbackKind::Compare); |
| 287 | setKind(JSOp::StrictNe, BaselineICFallbackKind::Compare); |
| 288 | |
| 289 | setKind(JSOp::NewArray, BaselineICFallbackKind::NewArray); |
| 290 | |
| 291 | setKind(JSOp::NewObject, BaselineICFallbackKind::NewObject); |
| 292 | setKind(JSOp::NewInit, BaselineICFallbackKind::NewObject); |
| 293 | |
| 294 | setKind(JSOp::InitElem, BaselineICFallbackKind::SetElem); |
| 295 | setKind(JSOp::InitHiddenElem, BaselineICFallbackKind::SetElem); |
| 296 | setKind(JSOp::InitLockedElem, BaselineICFallbackKind::SetElem); |
| 297 | setKind(JSOp::InitElemInc, BaselineICFallbackKind::SetElem); |
| 298 | setKind(JSOp::SetElem, BaselineICFallbackKind::SetElem); |
| 299 | setKind(JSOp::StrictSetElem, BaselineICFallbackKind::SetElem); |
| 300 | |
| 301 | setKind(JSOp::InitProp, BaselineICFallbackKind::SetProp); |
| 302 | setKind(JSOp::InitLockedProp, BaselineICFallbackKind::SetProp); |
| 303 | setKind(JSOp::InitHiddenProp, BaselineICFallbackKind::SetProp); |
| 304 | setKind(JSOp::InitGLexical, BaselineICFallbackKind::SetProp); |
| 305 | setKind(JSOp::SetProp, BaselineICFallbackKind::SetProp); |
| 306 | setKind(JSOp::StrictSetProp, BaselineICFallbackKind::SetProp); |
| 307 | setKind(JSOp::SetName, BaselineICFallbackKind::SetProp); |
| 308 | setKind(JSOp::StrictSetName, BaselineICFallbackKind::SetProp); |
| 309 | setKind(JSOp::SetGName, BaselineICFallbackKind::SetProp); |
| 310 | setKind(JSOp::StrictSetGName, BaselineICFallbackKind::SetProp); |
| 311 | |
| 312 | setKind(JSOp::GetProp, BaselineICFallbackKind::GetProp); |
| 313 | setKind(JSOp::GetBoundName, BaselineICFallbackKind::GetProp); |
| 314 | |
| 315 | setKind(JSOp::GetPropSuper, BaselineICFallbackKind::GetPropSuper); |
| 316 | |
| 317 | setKind(JSOp::GetElem, BaselineICFallbackKind::GetElem); |
| 318 | |
| 319 | setKind(JSOp::GetElemSuper, BaselineICFallbackKind::GetElemSuper); |
| 320 | |
| 321 | setKind(JSOp::In, BaselineICFallbackKind::In); |
| 322 | |
| 323 | setKind(JSOp::HasOwn, BaselineICFallbackKind::HasOwn); |
| 324 | |
| 325 | setKind(JSOp::CheckPrivateField, BaselineICFallbackKind::CheckPrivateField); |
| 326 | |
| 327 | setKind(JSOp::GetName, BaselineICFallbackKind::GetName); |
| 328 | setKind(JSOp::GetGName, BaselineICFallbackKind::GetName); |
| 329 | |
| 330 | setKind(JSOp::BindName, BaselineICFallbackKind::BindName); |
| 331 | setKind(JSOp::BindUnqualifiedName, BaselineICFallbackKind::BindName); |
| 332 | setKind(JSOp::BindUnqualifiedGName, BaselineICFallbackKind::BindName); |
| 333 | |
| 334 | setKind(JSOp::GetIntrinsic, BaselineICFallbackKind::GetIntrinsic); |
| 335 | |
| 336 | setKind(JSOp::Call, BaselineICFallbackKind::Call); |
| 337 | setKind(JSOp::CallContent, BaselineICFallbackKind::Call); |
| 338 | setKind(JSOp::CallIgnoresRv, BaselineICFallbackKind::Call); |
| 339 | setKind(JSOp::CallIter, BaselineICFallbackKind::Call); |
| 340 | setKind(JSOp::CallContentIter, BaselineICFallbackKind::Call); |
| 341 | setKind(JSOp::Eval, BaselineICFallbackKind::Call); |
| 342 | setKind(JSOp::StrictEval, BaselineICFallbackKind::Call); |
| 343 | |
| 344 | setKind(JSOp::SuperCall, BaselineICFallbackKind::CallConstructing); |
| 345 | setKind(JSOp::New, BaselineICFallbackKind::CallConstructing); |
| 346 | setKind(JSOp::NewContent, BaselineICFallbackKind::CallConstructing); |
| 347 | |
| 348 | setKind(JSOp::SpreadCall, BaselineICFallbackKind::SpreadCall); |
| 349 | setKind(JSOp::SpreadEval, BaselineICFallbackKind::SpreadCall); |
| 350 | setKind(JSOp::StrictSpreadEval, BaselineICFallbackKind::SpreadCall); |
| 351 | |
| 352 | setKind(JSOp::SpreadSuperCall, |
| 353 | BaselineICFallbackKind::SpreadCallConstructing); |
| 354 | setKind(JSOp::SpreadNew, BaselineICFallbackKind::SpreadCallConstructing); |
| 355 | |
| 356 | setKind(JSOp::Instanceof, BaselineICFallbackKind::InstanceOf); |
| 357 | |
| 358 | setKind(JSOp::Typeof, BaselineICFallbackKind::TypeOf); |
| 359 | setKind(JSOp::TypeofExpr, BaselineICFallbackKind::TypeOf); |
| 360 | |
| 361 | setKind(JSOp::TypeofEq, BaselineICFallbackKind::TypeOfEq); |
| 362 | |
| 363 | setKind(JSOp::ToPropertyKey, BaselineICFallbackKind::ToPropertyKey); |
| 364 | |
| 365 | setKind(JSOp::Iter, BaselineICFallbackKind::GetIterator); |
| 366 | |
| 367 | setKind(JSOp::OptimizeSpreadCall, |
| 368 | BaselineICFallbackKind::OptimizeSpreadCall); |
| 369 | |
| 370 | setKind(JSOp::Rest, BaselineICFallbackKind::Rest); |
| 371 | |
| 372 | setKind(JSOp::CloseIter, BaselineICFallbackKind::CloseIter); |
| 373 | setKind(JSOp::OptimizeGetIterator, |
| 374 | BaselineICFallbackKind::OptimizeGetIterator); |
| 375 | } |
| 376 | }; |
| 377 | |
| 378 | static constexpr OpToFallbackKindTable FallbackKindTable; |
| 379 | |
| 380 | void ICScript::initICEntries(JSContext* cx, JSScript* script) { |
| 381 | MOZ_ASSERT(cx->zone()->jitZone())do { static_assert( mozilla::detail::AssertionConditionType< decltype(cx->zone()->jitZone())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(cx->zone()->jitZone()) )), 0))) { do { } while (false); MOZ_ReportAssertionFailure("cx->zone()->jitZone()" , "/var/lib/jenkins/workspace/firefox-scan-build/js/src/jit/BaselineIC.cpp" , 381); AnnotateMozCrashReason("MOZ_ASSERT" "(" "cx->zone()->jitZone()" ")"); do { *((volatile int*)__null) = 381; __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 382 | MOZ_ASSERT(jit::IsBaselineInterpreterEnabled() ||do { static_assert( mozilla::detail::AssertionConditionType< decltype(jit::IsBaselineInterpreterEnabled() || jit::IsPortableBaselineInterpreterEnabled ())>::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(jit::IsBaselineInterpreterEnabled() || jit::IsPortableBaselineInterpreterEnabled ()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("jit::IsBaselineInterpreterEnabled() || jit::IsPortableBaselineInterpreterEnabled()" , "/var/lib/jenkins/workspace/firefox-scan-build/js/src/jit/BaselineIC.cpp" , 383); AnnotateMozCrashReason("MOZ_ASSERT" "(" "jit::IsBaselineInterpreterEnabled() || jit::IsPortableBaselineInterpreterEnabled()" ")"); do { *((volatile int*)__null) = 383; __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 383 | jit::IsPortableBaselineInterpreterEnabled())do { static_assert( mozilla::detail::AssertionConditionType< decltype(jit::IsBaselineInterpreterEnabled() || jit::IsPortableBaselineInterpreterEnabled ())>::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(jit::IsBaselineInterpreterEnabled() || jit::IsPortableBaselineInterpreterEnabled ()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("jit::IsBaselineInterpreterEnabled() || jit::IsPortableBaselineInterpreterEnabled()" , "/var/lib/jenkins/workspace/firefox-scan-build/js/src/jit/BaselineIC.cpp" , 383); AnnotateMozCrashReason("MOZ_ASSERT" "(" "jit::IsBaselineInterpreterEnabled() || jit::IsPortableBaselineInterpreterEnabled()" ")"); do { *((volatile int*)__null) = 383; __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 384 | |
| 385 | MOZ_ASSERT(numICEntries() == script->numICEntries())do { static_assert( mozilla::detail::AssertionConditionType< decltype(numICEntries() == script->numICEntries())>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(numICEntries() == script->numICEntries()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("numICEntries() == script->numICEntries()" , "/var/lib/jenkins/workspace/firefox-scan-build/js/src/jit/BaselineIC.cpp" , 385); AnnotateMozCrashReason("MOZ_ASSERT" "(" "numICEntries() == script->numICEntries()" ")"); do { *((volatile int*)__null) = 385; __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 386 | |
| 387 | // Index of the next ICEntry to initialize. |
| 388 | uint32_t icEntryIndex = 0; |
| 389 | |
| 390 | const BaselineICFallbackCode& fallbackCode = |
| 391 | cx->runtime()->jitRuntime()->baselineICFallbackCode(); |
| 392 | |
| 393 | // For JOF_IC ops: initialize ICEntries and fallback stubs. |
| 394 | for (BytecodeLocation loc : js::AllBytecodesIterable(script)) { |
| 395 | JSOp op = loc.getOp(); |
| 396 | |
| 397 | // Assert the frontend stored the correct IC index in jump target ops. |
| 398 | MOZ_ASSERT_IF(BytecodeIsJumpTarget(op), loc.icIndex() == icEntryIndex)do { if (BytecodeIsJumpTarget(op)) { do { static_assert( mozilla ::detail::AssertionConditionType<decltype(loc.icIndex() == icEntryIndex)>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(!!(loc.icIndex() == icEntryIndex))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("loc.icIndex() == icEntryIndex" , "/var/lib/jenkins/workspace/firefox-scan-build/js/src/jit/BaselineIC.cpp" , 398); AnnotateMozCrashReason("MOZ_ASSERT" "(" "loc.icIndex() == icEntryIndex" ")"); do { *((volatile int*)__null) = 398; __attribute__((nomerge )) ::abort(); } while (false); } } while (false); } } while ( false); |
| 399 | |
| 400 | uint8_t tableValue = FallbackKindTable.lookup(op); |
| 401 | |
| 402 | if (tableValue == OpToFallbackKindTable::NoICValue) { |
| 403 | MOZ_ASSERT(!BytecodeOpHasIC(op),do { static_assert( mozilla::detail::AssertionConditionType< decltype(!BytecodeOpHasIC(op))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(!BytecodeOpHasIC(op)))), 0)) ) { do { } while (false); MOZ_ReportAssertionFailure("!BytecodeOpHasIC(op)" " (" "Missing entry in OpToFallbackKindTable for JOF_IC op" ")" , "/var/lib/jenkins/workspace/firefox-scan-build/js/src/jit/BaselineIC.cpp" , 404); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!BytecodeOpHasIC(op)" ") (" "Missing entry in OpToFallbackKindTable for JOF_IC op" ")"); do { *((volatile int*)__null) = 404; __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 404 | "Missing entry in OpToFallbackKindTable for JOF_IC op")do { static_assert( mozilla::detail::AssertionConditionType< decltype(!BytecodeOpHasIC(op))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(!BytecodeOpHasIC(op)))), 0)) ) { do { } while (false); MOZ_ReportAssertionFailure("!BytecodeOpHasIC(op)" " (" "Missing entry in OpToFallbackKindTable for JOF_IC op" ")" , "/var/lib/jenkins/workspace/firefox-scan-build/js/src/jit/BaselineIC.cpp" , 404); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!BytecodeOpHasIC(op)" ") (" "Missing entry in OpToFallbackKindTable for JOF_IC op" ")"); do { *((volatile int*)__null) = 404; __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 405 | continue; |
| 406 | } |
| 407 | |
| 408 | MOZ_ASSERT(BytecodeOpHasIC(op),do { static_assert( mozilla::detail::AssertionConditionType< decltype(BytecodeOpHasIC(op))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(BytecodeOpHasIC(op)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("BytecodeOpHasIC(op)" " (" "Unexpected fallback kind for non-JOF_IC op" ")", "/var/lib/jenkins/workspace/firefox-scan-build/js/src/jit/BaselineIC.cpp" , 409); AnnotateMozCrashReason("MOZ_ASSERT" "(" "BytecodeOpHasIC(op)" ") (" "Unexpected fallback kind for non-JOF_IC op" ")"); do { *((volatile int*)__null) = 409; __attribute__((nomerge)) ::abort (); } while (false); } } while (false) |
| 409 | "Unexpected fallback kind for non-JOF_IC op")do { static_assert( mozilla::detail::AssertionConditionType< decltype(BytecodeOpHasIC(op))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(BytecodeOpHasIC(op)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("BytecodeOpHasIC(op)" " (" "Unexpected fallback kind for non-JOF_IC op" ")", "/var/lib/jenkins/workspace/firefox-scan-build/js/src/jit/BaselineIC.cpp" , 409); AnnotateMozCrashReason("MOZ_ASSERT" "(" "BytecodeOpHasIC(op)" ") (" "Unexpected fallback kind for non-JOF_IC op" ")"); do { *((volatile int*)__null) = 409; __attribute__((nomerge)) ::abort (); } while (false); } } while (false); |
| 410 | |
| 411 | BaselineICFallbackKind kind = BaselineICFallbackKind(tableValue); |
| 412 | TrampolinePtr stubCode = !jit::IsPortableBaselineInterpreterEnabled() |
| 413 | ? fallbackCode.addr(kind) |
| 414 | : TrampolinePtr(); |
| 415 | |
| 416 | // Initialize the ICEntry and ICFallbackStub. |
| 417 | uint32_t offset = loc.bytecodeToOffset(script); |
| 418 | ICEntry& entryRef = this->icEntry(icEntryIndex); |
| 419 | ICFallbackStub* stub = fallbackStub(icEntryIndex); |
| 420 | icEntryIndex++; |
| 421 | new (&entryRef) ICEntry(stub); |
| 422 | new (stub) ICFallbackStub(offset, stubCode); |
| 423 | } |
| 424 | |
| 425 | // Assert all ICEntries have been initialized. |
| 426 | MOZ_ASSERT(icEntryIndex == numICEntries())do { static_assert( mozilla::detail::AssertionConditionType< decltype(icEntryIndex == numICEntries())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(icEntryIndex == numICEntries ()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("icEntryIndex == numICEntries()", "/var/lib/jenkins/workspace/firefox-scan-build/js/src/jit/BaselineIC.cpp" , 426); AnnotateMozCrashReason("MOZ_ASSERT" "(" "icEntryIndex == numICEntries()" ")"); do { *((volatile int*)__null) = 426; __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 427 | } |
| 428 | |
| 429 | bool ICSupportsPolymorphicTypeData(JSOp op) { |
| 430 | MOZ_ASSERT(BytecodeOpHasIC(op))do { static_assert( mozilla::detail::AssertionConditionType< decltype(BytecodeOpHasIC(op))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(BytecodeOpHasIC(op)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("BytecodeOpHasIC(op)" , "/var/lib/jenkins/workspace/firefox-scan-build/js/src/jit/BaselineIC.cpp" , 430); AnnotateMozCrashReason("MOZ_ASSERT" "(" "BytecodeOpHasIC(op)" ")"); do { *((volatile int*)__null) = 430; __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 431 | BaselineICFallbackKind kind = |
| 432 | BaselineICFallbackKind(FallbackKindTable.lookup(op)); |
| 433 | switch (kind) { |
| 434 | case BaselineICFallbackKind::ToBool: |
| 435 | case BaselineICFallbackKind::TypeOf: |
| 436 | case BaselineICFallbackKind::TypeOfEq: |
| 437 | return true; |
| 438 | default: |
| 439 | return false; |
| 440 | } |
| 441 | } |
| 442 | |
| 443 | bool ICCacheIRStub::makesGCCalls() const { return stubInfo()->makesGCCalls(); } |
| 444 | |
| 445 | void ICFallbackStub::trackNotAttached() { state().trackNotAttached(); } |
| 446 | |
| 447 | // When we enter a baseline fallback stub, if a Warp compilation |
| 448 | // exists that transpiled that IC, we notify that compilation. This |
| 449 | // helps the bailout code tell whether a bailing instruction hoisted |
| 450 | // by LICM would have been executed anyway. |
| 451 | static void MaybeNotifyWarp(JSScript* script, ICFallbackStub* stub) { |
| 452 | if (stub->state().usedByTranspiler() && script->hasIonScript()) { |
| 453 | script->ionScript()->noteBaselineFallback(); |
| 454 | } |
| 455 | } |
| 456 | |
| 457 | void ICCacheIRStub::trace(JSTracer* trc) { |
| 458 | if (hasJitCode()) { |
| 459 | JitCode* stubJitCode = jitCode(); |
| 460 | TraceManuallyBarrieredEdge(trc, &stubJitCode, "baseline-ic-stub-code"); |
| 461 | } |
| 462 | |
| 463 | TraceCacheIRStub(trc, this, stubInfo()); |
| 464 | } |
| 465 | |
| 466 | bool ICCacheIRStub::traceWeak(JSTracer* trc) { |
| 467 | return TraceWeakCacheIRStub(trc, this, stubInfo()); |
| 468 | } |
| 469 | |
| 470 | static void MaybeTransition(JSContext* cx, BaselineFrame* frame, |
| 471 | ICFallbackStub* stub) { |
| 472 | if (stub->state().shouldTransition()) { |
| 473 | if (!TryFoldingStubs(cx, stub, frame->script(), frame->icScript())) { |
| 474 | cx->recoverFromOutOfMemory(); |
| 475 | } |
| 476 | if (stub->state().maybeTransition()) { |
| 477 | ICEntry* icEntry = frame->icScript()->icEntryForStub(stub); |
| 478 | #ifdef JS_CACHEIR_SPEW1 |
| 479 | if (cx->spewer().enabled(cx, frame->script(), |
| 480 | SpewChannel::CacheIRHealthReport)) { |
| 481 | CacheIRHealth cih; |
| 482 | RootedScript script(cx, frame->script()); |
| 483 | cih.healthReportForIC(cx, icEntry, stub, script, |
| 484 | SpewContext::Transition); |
| 485 | } |
| 486 | #endif |
| 487 | stub->discardStubs(cx->zone(), icEntry); |
| 488 | } |
| 489 | } |
| 490 | } |
| 491 | |
| 492 | // This helper handles ICState updates/transitions while attaching CacheIR |
| 493 | // stubs. |
| 494 | template <typename IRGenerator, typename... Args> |
| 495 | static void TryAttachStub(const char* name, JSContext* cx, BaselineFrame* frame, |
| 496 | ICFallbackStub* stub, Args&&... args) { |
| 497 | MaybeTransition(cx, frame, stub); |
| 498 | |
| 499 | if (stub->state().canAttachStub()) { |
| 500 | RootedScript script(cx, frame->script()); |
| 501 | ICScript* icScript = frame->icScript(); |
| 502 | jsbytecode* pc = StubOffsetToPc(stub, script); |
| 503 | bool attached = false; |
| 504 | IRGenerator gen(cx, script, pc, stub->state(), std::forward<Args>(args)...); |
| 505 | switch (gen.tryAttachStub()) { |
| 506 | case AttachDecision::Attach: { |
| 507 | ICAttachResult result = |
| 508 | AttachBaselineCacheIRStub(cx, gen.writerRef(), gen.cacheKind(), |
| 509 | script, icScript, stub, gen.stubName()); |
| 510 | if (result == ICAttachResult::Attached) { |
| 511 | attached = true; |
| 512 | JitSpew(JitSpew_BaselineIC, " Attached %s CacheIR stub", name); |
| 513 | } |
| 514 | } break; |
| 515 | case AttachDecision::NoAction: |
| 516 | break; |
| 517 | case AttachDecision::TemporarilyUnoptimizable: |
| 518 | case AttachDecision::Deferred: |
| 519 | MOZ_ASSERT_UNREACHABLE("Not expected in generic TryAttachStub")do { static_assert( mozilla::detail::AssertionConditionType< decltype(false)>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(!!(false))), 0))) { do { } while ( false); MOZ_ReportAssertionFailure("false" " (" "MOZ_ASSERT_UNREACHABLE: " "Not expected in generic TryAttachStub" ")", "/var/lib/jenkins/workspace/firefox-scan-build/js/src/jit/BaselineIC.cpp" , 519); AnnotateMozCrashReason("MOZ_ASSERT" "(" "false" ") (" "MOZ_ASSERT_UNREACHABLE: " "Not expected in generic TryAttachStub" ")"); do { *((volatile int*)__null) = 519; __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 520 | break; |
| 521 | } |
| 522 | if (!attached) { |
| 523 | stub->trackNotAttached(); |
| 524 | } |
| 525 | } |
| 526 | } |
| 527 | |
| 528 | void ICFallbackStub::unlinkStub(Zone* zone, ICEntry* icEntry, |
| 529 | ICCacheIRStub* prev, ICCacheIRStub* stub) { |
| 530 | // We are removing edges from ICStub to gcthings. Perform a barrier to let the |
| 531 | // GC know about those edges. |
| 532 | PreWriteBarrier(zone, stub); |
| 533 | |
| 534 | unlinkStubUnbarriered(icEntry, prev, stub); |
| 535 | } |
| 536 | |
| 537 | void ICFallbackStub::unlinkStubUnbarriered(ICEntry* icEntry, |
| 538 | ICCacheIRStub* prev, |
| 539 | ICCacheIRStub* stub) { |
| 540 | if (prev) { |
| 541 | MOZ_ASSERT(prev->next() == stub)do { static_assert( mozilla::detail::AssertionConditionType< decltype(prev->next() == stub)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(prev->next() == stub))), 0 ))) { do { } while (false); MOZ_ReportAssertionFailure("prev->next() == stub" , "/var/lib/jenkins/workspace/firefox-scan-build/js/src/jit/BaselineIC.cpp" , 541); AnnotateMozCrashReason("MOZ_ASSERT" "(" "prev->next() == stub" ")"); do { *((volatile int*)__null) = 541; __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 542 | prev->setNext(stub->next()); |
| 543 | } else { |
| 544 | MOZ_ASSERT(icEntry->firstStub() == stub)do { static_assert( mozilla::detail::AssertionConditionType< decltype(icEntry->firstStub() == stub)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(icEntry->firstStub() == stub ))), 0))) { do { } while (false); MOZ_ReportAssertionFailure( "icEntry->firstStub() == stub", "/var/lib/jenkins/workspace/firefox-scan-build/js/src/jit/BaselineIC.cpp" , 544); AnnotateMozCrashReason("MOZ_ASSERT" "(" "icEntry->firstStub() == stub" ")"); do { *((volatile int*)__null) = 544; __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 545 | icEntry->setFirstStub(stub->next()); |
| 546 | } |
| 547 | |
| 548 | state_.trackUnlinkedStub(); |
| 549 | |
| 550 | #ifdef DEBUG1 |
| 551 | // Poison stub code to ensure we don't call this stub again. However, if |
| 552 | // this stub can make calls, a pointer to it may be stored in a stub frame |
| 553 | // on the stack, so we can't touch the stubCode_ or GC will crash when |
| 554 | // tracing this pointer. |
| 555 | if (!stub->makesGCCalls()) { |
| 556 | stub->stubCode_ = (uint8_t*)0xbad; |
| 557 | } |
| 558 | #endif |
| 559 | } |
| 560 | |
| 561 | void ICFallbackStub::discardStubs(Zone* zone, ICEntry* icEntry) { |
| 562 | ICStub* stub = icEntry->firstStub(); |
| 563 | while (stub != this) { |
| 564 | unlinkStub(zone, icEntry, /* prev = */ nullptr, stub->toCacheIRStub()); |
| 565 | stub = stub->toCacheIRStub()->next(); |
| 566 | } |
| 567 | clearMayHaveFoldedStub(); |
| 568 | } |
| 569 | |
| 570 | static void InitMacroAssemblerForICStub(StackMacroAssembler& masm) { |
| 571 | #ifndef JS_USE_LINK_REGISTER |
| 572 | // The first value contains the return addres, |
| 573 | // which we pull into ICTailCallReg for tail calls. |
| 574 | masm.adjustFrame(sizeof(intptr_t)); |
| 575 | #endif |
| 576 | #ifdef JS_CODEGEN_ARM |
| 577 | masm.setSecondScratchReg(BaselineSecondScratchReg); |
| 578 | #endif |
| 579 | } |
| 580 | |
| 581 | bool FallbackICCodeCompiler::tailCallVMInternal(MacroAssembler& masm, |
| 582 | VMFunctionId id) { |
| 583 | TrampolinePtr code = cx->runtime()->jitRuntime()->getVMWrapper(id); |
| 584 | const VMFunctionData& fun = GetVMFunction(id); |
| 585 | uint32_t argSize = fun.explicitStackSlots() * sizeof(void*); |
| 586 | EmitBaselineTailCallVM(code, masm, argSize); |
| 587 | return true; |
| 588 | } |
| 589 | |
| 590 | bool FallbackICCodeCompiler::callVMInternal(MacroAssembler& masm, |
| 591 | VMFunctionId id) { |
| 592 | MOZ_ASSERT(inStubFrame_)do { static_assert( mozilla::detail::AssertionConditionType< decltype(inStubFrame_)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(inStubFrame_))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("inStubFrame_", "/var/lib/jenkins/workspace/firefox-scan-build/js/src/jit/BaselineIC.cpp" , 592); AnnotateMozCrashReason("MOZ_ASSERT" "(" "inStubFrame_" ")"); do { *((volatile int*)__null) = 592; __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 593 | |
| 594 | TrampolinePtr code = cx->runtime()->jitRuntime()->getVMWrapper(id); |
| 595 | |
| 596 | EmitBaselineCallVM(code, masm); |
| 597 | return true; |
| 598 | } |
| 599 | |
| 600 | template <typename Fn, Fn fn> |
| 601 | bool FallbackICCodeCompiler::callVM(MacroAssembler& masm) { |
| 602 | VMFunctionId id = VMFunctionToId<Fn, fn>::id; |
| 603 | return callVMInternal(masm, id); |
| 604 | } |
| 605 | |
| 606 | template <typename Fn, Fn fn> |
| 607 | bool FallbackICCodeCompiler::tailCallVM(MacroAssembler& masm) { |
| 608 | VMFunctionId id = VMFunctionToId<Fn, fn>::id; |
| 609 | return tailCallVMInternal(masm, id); |
| 610 | } |
| 611 | |
| 612 | void FallbackICCodeCompiler::enterStubFrame(MacroAssembler& masm, |
| 613 | Register scratch) { |
| 614 | EmitBaselineEnterStubFrame(masm, scratch); |
| 615 | #ifdef DEBUG1 |
| 616 | framePushedAtEnterStubFrame_ = masm.framePushed(); |
| 617 | #endif |
| 618 | |
| 619 | MOZ_ASSERT(!inStubFrame_)do { static_assert( mozilla::detail::AssertionConditionType< decltype(!inStubFrame_)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(!inStubFrame_))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!inStubFrame_", "/var/lib/jenkins/workspace/firefox-scan-build/js/src/jit/BaselineIC.cpp" , 619); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!inStubFrame_" ")"); do { *((volatile int*)__null) = 619; __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 620 | inStubFrame_ = true; |
| 621 | |
| 622 | #ifdef DEBUG1 |
| 623 | entersStubFrame_ = true; |
| 624 | #endif |
| 625 | } |
| 626 | |
| 627 | void FallbackICCodeCompiler::assumeStubFrame() { |
| 628 | MOZ_ASSERT(!inStubFrame_)do { static_assert( mozilla::detail::AssertionConditionType< decltype(!inStubFrame_)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(!inStubFrame_))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!inStubFrame_", "/var/lib/jenkins/workspace/firefox-scan-build/js/src/jit/BaselineIC.cpp" , 628); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!inStubFrame_" ")"); do { *((volatile int*)__null) = 628; __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 629 | inStubFrame_ = true; |
| 630 | |
| 631 | #ifdef DEBUG1 |
| 632 | entersStubFrame_ = true; |
| 633 | |
| 634 | // |framePushed| isn't tracked precisely in ICStubs, so simply assume it to |
| 635 | // be the stub frame layout and the pushed ICStub* so that assertions don't |
| 636 | // fail in leaveStubFrame |
| 637 | framePushedAtEnterStubFrame_ = |
| 638 | BaselineStubFrameLayout::Size() + sizeof(ICStub*); |
| 639 | #endif |
| 640 | } |
| 641 | |
| 642 | void FallbackICCodeCompiler::leaveStubFrame(MacroAssembler& masm) { |
| 643 | MOZ_ASSERT(entersStubFrame_ && inStubFrame_)do { static_assert( mozilla::detail::AssertionConditionType< decltype(entersStubFrame_ && inStubFrame_)>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(entersStubFrame_ && inStubFrame_))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("entersStubFrame_ && inStubFrame_" , "/var/lib/jenkins/workspace/firefox-scan-build/js/src/jit/BaselineIC.cpp" , 643); AnnotateMozCrashReason("MOZ_ASSERT" "(" "entersStubFrame_ && inStubFrame_" ")"); do { *((volatile int*)__null) = 643; __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 644 | inStubFrame_ = false; |
| 645 | |
| 646 | #ifdef DEBUG1 |
| 647 | masm.setFramePushed(framePushedAtEnterStubFrame_); |
| 648 | #endif |
| 649 | EmitBaselineLeaveStubFrame(masm); |
| 650 | } |
| 651 | |
| 652 | void FallbackICCodeCompiler::pushStubPayload(MacroAssembler& masm, |
| 653 | Register scratch) { |
| 654 | if (inStubFrame_) { |
| 655 | masm.loadPtr(Address(FramePointer, 0), scratch); |
| 656 | masm.pushBaselineFramePtr(scratch, scratch); |
| 657 | } else { |
| 658 | masm.pushBaselineFramePtr(FramePointer, scratch); |
| 659 | } |
| 660 | } |
| 661 | |
| 662 | void FallbackICCodeCompiler::PushStubPayload(MacroAssembler& masm, |
| 663 | Register scratch) { |
| 664 | pushStubPayload(masm, scratch); |
| 665 | masm.adjustFrame(sizeof(intptr_t)); |
| 666 | } |
| 667 | |
| 668 | // |
| 669 | // ToBool_Fallback |
| 670 | // |
| 671 | |
| 672 | bool DoToBoolFallback(JSContext* cx, BaselineFrame* frame, ICFallbackStub* stub, |
| 673 | HandleValue arg, MutableHandleValue ret) { |
| 674 | stub->incrementEnteredCount(); |
| 675 | MaybeNotifyWarp(frame->outerScript(), stub); |
| 676 | FallbackICSpew(cx, stub, "ToBool"); |
| 677 | |
| 678 | TryAttachStub<ToBoolIRGenerator>("ToBool", cx, frame, stub, arg); |
| 679 | |
| 680 | bool cond = ToBoolean(arg); |
| 681 | ret.setBoolean(cond); |
| 682 | |
| 683 | return true; |
| 684 | } |
| 685 | |
| 686 | bool FallbackICCodeCompiler::emit_ToBool() { |
| 687 | static_assert(R0 == JSReturnOperand); |
| 688 | |
| 689 | // Restore the tail call register. |
| 690 | EmitRestoreTailCallReg(masm); |
| 691 | |
| 692 | // Push arguments. |
| 693 | masm.pushValue(R0); |
| 694 | masm.push(ICStubReg); |
| 695 | pushStubPayload(masm, R0.scratchReg()); |
| 696 | |
| 697 | using Fn = bool (*)(JSContext*, BaselineFrame*, ICFallbackStub*, HandleValue, |
| 698 | MutableHandleValue); |
| 699 | return tailCallVM<Fn, DoToBoolFallback>(masm); |
| 700 | } |
| 701 | |
| 702 | // |
| 703 | // GetElem_Fallback |
| 704 | // |
| 705 | |
| 706 | bool DoGetElemFallback(JSContext* cx, BaselineFrame* frame, |
| 707 | ICFallbackStub* stub, HandleValue lhs, HandleValue rhs, |
| 708 | MutableHandleValue res) { |
| 709 | stub->incrementEnteredCount(); |
| 710 | MaybeNotifyWarp(frame->outerScript(), stub); |
| 711 | FallbackICSpew(cx, stub, "GetElem"); |
| 712 | |
| 713 | #ifdef DEBUG1 |
| 714 | jsbytecode* pc = StubOffsetToPc(stub, frame->script()); |
| 715 | MOZ_ASSERT(JSOp(*pc) == JSOp::GetElem)do { static_assert( mozilla::detail::AssertionConditionType< decltype(JSOp(*pc) == JSOp::GetElem)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(JSOp(*pc) == JSOp::GetElem)) ), 0))) { do { } while (false); MOZ_ReportAssertionFailure("JSOp(*pc) == JSOp::GetElem" , "/var/lib/jenkins/workspace/firefox-scan-build/js/src/jit/BaselineIC.cpp" , 715); AnnotateMozCrashReason("MOZ_ASSERT" "(" "JSOp(*pc) == JSOp::GetElem" ")"); do { *((volatile int*)__null) = 715; __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 716 | #endif |
| 717 | |
| 718 | TryAttachStub<GetPropIRGenerator>("GetElem", cx, frame, stub, |
| 719 | CacheKind::GetElem, lhs, rhs); |
| 720 | |
| 721 | if (!GetElementOperation(cx, lhs, rhs, res)) { |
| 722 | return false; |
| 723 | } |
| 724 | |
| 725 | return true; |
| 726 | } |
| 727 | |
| 728 | bool DoGetElemSuperFallback(JSContext* cx, BaselineFrame* frame, |
| 729 | ICFallbackStub* stub, HandleValue lhs, |
| 730 | HandleValue rhs, HandleValue receiver, |
| 731 | MutableHandleValue res) { |
| 732 | stub->incrementEnteredCount(); |
| 733 | MaybeNotifyWarp(frame->outerScript(), stub); |
| 734 | |
| 735 | jsbytecode* pc = StubOffsetToPc(stub, frame->script()); |
| 736 | |
| 737 | JSOp op = JSOp(*pc); |
| 738 | FallbackICSpew(cx, stub, "GetElemSuper(%s)", CodeName(op)); |
| 739 | |
| 740 | MOZ_ASSERT(op == JSOp::GetElemSuper)do { static_assert( mozilla::detail::AssertionConditionType< decltype(op == JSOp::GetElemSuper)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(op == JSOp::GetElemSuper))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("op == JSOp::GetElemSuper" , "/var/lib/jenkins/workspace/firefox-scan-build/js/src/jit/BaselineIC.cpp" , 740); AnnotateMozCrashReason("MOZ_ASSERT" "(" "op == JSOp::GetElemSuper" ")"); do { *((volatile int*)__null) = 740; __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 741 | |
| 742 | // |lhs| is [[HomeObject]].[[Prototype]] which must be an Object or null. |
| 743 | MOZ_ASSERT(lhs.isObjectOrNull())do { static_assert( mozilla::detail::AssertionConditionType< decltype(lhs.isObjectOrNull())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(lhs.isObjectOrNull()))), 0)) ) { do { } while (false); MOZ_ReportAssertionFailure("lhs.isObjectOrNull()" , "/var/lib/jenkins/workspace/firefox-scan-build/js/src/jit/BaselineIC.cpp" , 743); AnnotateMozCrashReason("MOZ_ASSERT" "(" "lhs.isObjectOrNull()" ")"); do { *((volatile int*)__null) = 743; __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 744 | |
| 745 | int lhsIndex = -1; |
| 746 | RootedObject lhsObj( |
| 747 | cx, ToObjectFromStackForPropertyAccess(cx, lhs, lhsIndex, rhs)); |
| 748 | if (!lhsObj) { |
| 749 | return false; |
| 750 | } |
| 751 | |
| 752 | TryAttachStub<GetPropIRGenerator>("GetElemSuper", cx, frame, stub, |
| 753 | CacheKind::GetElemSuper, lhs, rhs); |
| 754 | |
| 755 | return GetObjectElementOperation(cx, op, lhsObj, receiver, rhs, res); |
| 756 | } |
| 757 | |
| 758 | bool FallbackICCodeCompiler::emitGetElem(bool hasReceiver) { |
| 759 | static_assert(R0 == JSReturnOperand); |
| 760 | |
| 761 | // Restore the tail call register. |
| 762 | EmitRestoreTailCallReg(masm); |
| 763 | |
| 764 | // Super property getters use a |this| that differs from base object |
| 765 | if (hasReceiver) { |
| 766 | // State: receiver in R0, index in R1, obj on the stack |
| 767 | |
| 768 | // Ensure stack is fully synced for the expression decompiler. |
| 769 | // We need: receiver, index, obj |
| 770 | masm.pushValue(R0); |
| 771 | masm.pushValue(R1); |
| 772 | masm.pushValue(Address(masm.getStackPointer(), sizeof(Value) * 2)); |
| 773 | |
| 774 | // Push arguments. |
| 775 | masm.pushValue(R0); // Receiver |
| 776 | masm.pushValue(R1); // Index |
| 777 | masm.pushValue(Address(masm.getStackPointer(), sizeof(Value) * 5)); // Obj |
| 778 | masm.push(ICStubReg); |
| 779 | masm.pushBaselineFramePtr(FramePointer, R0.scratchReg()); |
| 780 | |
| 781 | using Fn = |
| 782 | bool (*)(JSContext*, BaselineFrame*, ICFallbackStub*, HandleValue, |
| 783 | HandleValue, HandleValue, MutableHandleValue); |
| 784 | if (!tailCallVM<Fn, DoGetElemSuperFallback>(masm)) { |
| 785 | return false; |
| 786 | } |
| 787 | } else { |
| 788 | // Ensure stack is fully synced for the expression decompiler. |
| 789 | masm.pushValue(R0); |
| 790 | masm.pushValue(R1); |
| 791 | |
| 792 | // Push arguments. |
| 793 | masm.pushValue(R1); |
| 794 | masm.pushValue(R0); |
| 795 | masm.push(ICStubReg); |
| 796 | masm.pushBaselineFramePtr(FramePointer, R0.scratchReg()); |
| 797 | |
| 798 | using Fn = bool (*)(JSContext*, BaselineFrame*, ICFallbackStub*, |
| 799 | HandleValue, HandleValue, MutableHandleValue); |
| 800 | if (!tailCallVM<Fn, DoGetElemFallback>(masm)) { |
| 801 | return false; |
| 802 | } |
| 803 | } |
| 804 | |
| 805 | // This is the resume point used when bailout rewrites call stack to undo |
| 806 | // Ion inlined frames. The return address pushed onto reconstructed stack |
| 807 | // will point here. |
| 808 | assumeStubFrame(); |
| 809 | if (hasReceiver) { |
| 810 | code.initBailoutReturnOffset(BailoutReturnKind::GetElemSuper, |
| 811 | masm.currentOffset()); |
| 812 | } else { |
| 813 | code.initBailoutReturnOffset(BailoutReturnKind::GetElem, |
| 814 | masm.currentOffset()); |
| 815 | } |
| 816 | |
| 817 | leaveStubFrame(masm); |
| 818 | |
| 819 | EmitReturnFromIC(masm); |
| 820 | return true; |
| 821 | } |
| 822 | |
| 823 | bool FallbackICCodeCompiler::emit_GetElem() { |
| 824 | return emitGetElem(/* hasReceiver = */ false); |
| 825 | } |
| 826 | |
| 827 | bool FallbackICCodeCompiler::emit_GetElemSuper() { |
| 828 | return emitGetElem(/* hasReceiver = */ true); |
| 829 | } |
| 830 | |
| 831 | bool DoSetElemFallback(JSContext* cx, BaselineFrame* frame, |
| 832 | ICFallbackStub* stub, Value* stack, HandleValue objv, |
| 833 | HandleValue index, HandleValue rhs) { |
| 834 | using DeferType = SetPropIRGenerator::DeferType; |
| 835 | |
| 836 | stub->incrementEnteredCount(); |
| 837 | MaybeNotifyWarp(frame->outerScript(), stub); |
| 838 | |
| 839 | RootedScript script(cx, frame->script()); |
| 840 | RootedScript outerScript(cx, script); |
| 841 | jsbytecode* pc = StubOffsetToPc(stub, script); |
| 842 | JSOp op = JSOp(*pc); |
| 843 | FallbackICSpew(cx, stub, "SetElem(%s)", CodeName(JSOp(*pc))); |
| 844 | |
| 845 | MOZ_ASSERT(op == JSOp::SetElem || op == JSOp::StrictSetElem ||do { static_assert( mozilla::detail::AssertionConditionType< decltype(op == JSOp::SetElem || op == JSOp::StrictSetElem || op == JSOp::InitElem || op == JSOp::InitHiddenElem || op == JSOp ::InitLockedElem || op == JSOp::InitElemInc)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(op == JSOp::SetElem || op == JSOp::StrictSetElem || op == JSOp::InitElem || op == JSOp::InitHiddenElem || op == JSOp::InitLockedElem || op == JSOp::InitElemInc))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("op == JSOp::SetElem || op == JSOp::StrictSetElem || op == JSOp::InitElem || op == JSOp::InitHiddenElem || op == JSOp::InitLockedElem || op == JSOp::InitElemInc" , "/var/lib/jenkins/workspace/firefox-scan-build/js/src/jit/BaselineIC.cpp" , 847); AnnotateMozCrashReason("MOZ_ASSERT" "(" "op == JSOp::SetElem || op == JSOp::StrictSetElem || op == JSOp::InitElem || op == JSOp::InitHiddenElem || op == JSOp::InitLockedElem || op == JSOp::InitElemInc" ")"); do { *((volatile int*)__null) = 847; __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 846 | op == JSOp::InitElem || op == JSOp::InitHiddenElem ||do { static_assert( mozilla::detail::AssertionConditionType< decltype(op == JSOp::SetElem || op == JSOp::StrictSetElem || op == JSOp::InitElem || op == JSOp::InitHiddenElem || op == JSOp ::InitLockedElem || op == JSOp::InitElemInc)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(op == JSOp::SetElem || op == JSOp::StrictSetElem || op == JSOp::InitElem || op == JSOp::InitHiddenElem || op == JSOp::InitLockedElem || op == JSOp::InitElemInc))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("op == JSOp::SetElem || op == JSOp::StrictSetElem || op == JSOp::InitElem || op == JSOp::InitHiddenElem || op == JSOp::InitLockedElem || op == JSOp::InitElemInc" , "/var/lib/jenkins/workspace/firefox-scan-build/js/src/jit/BaselineIC.cpp" , 847); AnnotateMozCrashReason("MOZ_ASSERT" "(" "op == JSOp::SetElem || op == JSOp::StrictSetElem || op == JSOp::InitElem || op == JSOp::InitHiddenElem || op == JSOp::InitLockedElem || op == JSOp::InitElemInc" ")"); do { *((volatile int*)__null) = 847; __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 847 | op == JSOp::InitLockedElem || op == JSOp::InitElemInc)do { static_assert( mozilla::detail::AssertionConditionType< decltype(op == JSOp::SetElem || op == JSOp::StrictSetElem || op == JSOp::InitElem || op == JSOp::InitHiddenElem || op == JSOp ::InitLockedElem || op == JSOp::InitElemInc)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(op == JSOp::SetElem || op == JSOp::StrictSetElem || op == JSOp::InitElem || op == JSOp::InitHiddenElem || op == JSOp::InitLockedElem || op == JSOp::InitElemInc))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("op == JSOp::SetElem || op == JSOp::StrictSetElem || op == JSOp::InitElem || op == JSOp::InitHiddenElem || op == JSOp::InitLockedElem || op == JSOp::InitElemInc" , "/var/lib/jenkins/workspace/firefox-scan-build/js/src/jit/BaselineIC.cpp" , 847); AnnotateMozCrashReason("MOZ_ASSERT" "(" "op == JSOp::SetElem || op == JSOp::StrictSetElem || op == JSOp::InitElem || op == JSOp::InitHiddenElem || op == JSOp::InitLockedElem || op == JSOp::InitElemInc" ")"); do { *((volatile int*)__null) = 847; __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 848 | |
| 849 | int objvIndex = -3; |
| 850 | RootedObject obj( |
| 851 | cx, ToObjectFromStackForPropertyAccess(cx, objv, objvIndex, index)); |
| 852 | if (!obj) { |
| 853 | return false; |
| 854 | } |
| 855 | |
| 856 | Rooted<Shape*> oldShape(cx, obj->shape()); |
| 857 | |
| 858 | DeferType deferType = DeferType::None; |
| 859 | bool attached = false; |
| 860 | |
| 861 | MaybeTransition(cx, frame, stub); |
| 862 | |
| 863 | if (stub->state().canAttachStub()) { |
| 864 | ICScript* icScript = frame->icScript(); |
| 865 | SetPropIRGenerator gen(cx, script, pc, CacheKind::SetElem, stub->state(), |
| 866 | objv, index, rhs); |
| 867 | switch (gen.tryAttachStub()) { |
| 868 | case AttachDecision::Attach: { |
| 869 | ICAttachResult result = AttachBaselineCacheIRStub( |
| 870 | cx, gen.writerRef(), gen.cacheKind(), frame->script(), icScript, |
| 871 | stub, gen.stubName()); |
| 872 | if (result == ICAttachResult::Attached) { |
| 873 | attached = true; |
| 874 | JitSpew(JitSpew_BaselineIC, " Attached SetElem CacheIR stub"); |
| 875 | } |
| 876 | } break; |
| 877 | case AttachDecision::NoAction: |
| 878 | break; |
| 879 | case AttachDecision::TemporarilyUnoptimizable: |
| 880 | attached = true; |
| 881 | break; |
| 882 | case AttachDecision::Deferred: |
| 883 | deferType = gen.deferType(); |
| 884 | MOZ_ASSERT(deferType != DeferType::None)do { static_assert( mozilla::detail::AssertionConditionType< decltype(deferType != DeferType::None)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(deferType != DeferType::None ))), 0))) { do { } while (false); MOZ_ReportAssertionFailure( "deferType != DeferType::None", "/var/lib/jenkins/workspace/firefox-scan-build/js/src/jit/BaselineIC.cpp" , 884); AnnotateMozCrashReason("MOZ_ASSERT" "(" "deferType != DeferType::None" ")"); do { *((volatile int*)__null) = 884; __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 885 | break; |
| 886 | } |
| 887 | if (deferType == DeferType::None && !attached) { |
| 888 | stub->trackNotAttached(); |
| 889 | } |
| 890 | } |
| 891 | |
| 892 | if (op == JSOp::InitElem || op == JSOp::InitHiddenElem || |
| 893 | op == JSOp::InitLockedElem) { |
| 894 | if (!InitElemOperation(cx, pc, obj, index, rhs)) { |
| 895 | return false; |
| 896 | } |
| 897 | } else if (op == JSOp::InitElemInc) { |
| 898 | if (!InitElemIncOperation(cx, obj.as<ArrayObject>(), index.toInt32(), |
| 899 | rhs)) { |
| 900 | return false; |
| 901 | } |
| 902 | } else { |
| 903 | if (!SetObjectElementWithReceiver(cx, obj, index, rhs, objv, |
| 904 | JSOp(*pc) == JSOp::StrictSetElem)) { |
| 905 | return false; |
| 906 | } |
| 907 | } |
| 908 | |
| 909 | if (stack) { |
| 910 | // Overwrite the object on the stack (pushed for the decompiler) with the |
| 911 | // rhs. |
| 912 | MOZ_ASSERT(stack[2] == objv)do { static_assert( mozilla::detail::AssertionConditionType< decltype(stack[2] == objv)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(stack[2] == objv))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("stack[2] == objv" , "/var/lib/jenkins/workspace/firefox-scan-build/js/src/jit/BaselineIC.cpp" , 912); AnnotateMozCrashReason("MOZ_ASSERT" "(" "stack[2] == objv" ")"); do { *((volatile int*)__null) = 912; __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 913 | stack[2] = rhs; |
| 914 | } |
| 915 | |
| 916 | if (attached) { |
| 917 | return true; |
| 918 | } |
| 919 | |
| 920 | // The SetObjectElement call might have entered this IC recursively, so try |
| 921 | // to transition. |
| 922 | MaybeTransition(cx, frame, stub); |
| 923 | |
| 924 | bool canAttachStub = stub->state().canAttachStub(); |
| 925 | |
| 926 | if (deferType != DeferType::None && canAttachStub) { |
| 927 | SetPropIRGenerator gen(cx, script, pc, CacheKind::SetElem, stub->state(), |
| 928 | objv, index, rhs); |
| 929 | |
| 930 | MOZ_ASSERT(deferType == DeferType::AddSlot)do { static_assert( mozilla::detail::AssertionConditionType< decltype(deferType == DeferType::AddSlot)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(deferType == DeferType::AddSlot ))), 0))) { do { } while (false); MOZ_ReportAssertionFailure( "deferType == DeferType::AddSlot", "/var/lib/jenkins/workspace/firefox-scan-build/js/src/jit/BaselineIC.cpp" , 930); AnnotateMozCrashReason("MOZ_ASSERT" "(" "deferType == DeferType::AddSlot" ")"); do { *((volatile int*)__null) = 930; __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 931 | AttachDecision decision = gen.tryAttachAddSlotStub(oldShape); |
| 932 | |
| 933 | switch (decision) { |
| 934 | case AttachDecision::Attach: { |
| 935 | ICScript* icScript = frame->icScript(); |
| 936 | ICAttachResult result = AttachBaselineCacheIRStub( |
| 937 | cx, gen.writerRef(), gen.cacheKind(), frame->script(), icScript, |
| 938 | stub, gen.stubName()); |
| 939 | if (result == ICAttachResult::Attached) { |
| 940 | attached = true; |
| 941 | JitSpew(JitSpew_BaselineIC, " Attached SetElem CacheIR stub"); |
| 942 | } |
| 943 | } break; |
| 944 | case AttachDecision::NoAction: |
| 945 | gen.trackAttached(IRGenerator::NotAttached); |
| 946 | break; |
| 947 | case AttachDecision::TemporarilyUnoptimizable: |
| 948 | case AttachDecision::Deferred: |
| 949 | MOZ_ASSERT_UNREACHABLE("Invalid attach result")do { static_assert( mozilla::detail::AssertionConditionType< decltype(false)>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(!!(false))), 0))) { do { } while ( false); MOZ_ReportAssertionFailure("false" " (" "MOZ_ASSERT_UNREACHABLE: " "Invalid attach result" ")", "/var/lib/jenkins/workspace/firefox-scan-build/js/src/jit/BaselineIC.cpp" , 949); AnnotateMozCrashReason("MOZ_ASSERT" "(" "false" ") (" "MOZ_ASSERT_UNREACHABLE: " "Invalid attach result" ")"); do { *((volatile int*)__null) = 949; __attribute__((nomerge)) ::abort (); } while (false); } } while (false); |
| 950 | break; |
| 951 | } |
| 952 | if (!attached) { |
| 953 | stub->trackNotAttached(); |
| 954 | } |
| 955 | } |
| 956 | |
| 957 | return true; |
| 958 | } |
| 959 | |
| 960 | bool FallbackICCodeCompiler::emit_SetElem() { |
| 961 | static_assert(R0 == JSReturnOperand); |
| 962 | |
| 963 | EmitRestoreTailCallReg(masm); |
| 964 | |
| 965 | // State: R0: object, R1: index, stack: rhs. |
| 966 | // For the decompiler, the stack has to be: object, index, rhs, |
| 967 | // so we push the index, then overwrite the rhs Value with R0 |
| 968 | // and push the rhs value. |
| 969 | masm.pushValue(R1); |
| 970 | masm.loadValue(Address(masm.getStackPointer(), sizeof(Value)), R1); |
| 971 | masm.storeValue(R0, Address(masm.getStackPointer(), sizeof(Value))); |
| 972 | masm.pushValue(R1); |
| 973 | |
| 974 | // Push arguments. |
| 975 | masm.pushValue(R1); // RHS |
| 976 | |
| 977 | // Push index. On x86 and ARM two push instructions are emitted so use a |
| 978 | // separate register to store the old stack pointer. |
| 979 | masm.moveStackPtrTo(R1.scratchReg()); |
| 980 | masm.pushValue(Address(R1.scratchReg(), 2 * sizeof(Value))); |
| 981 | masm.pushValue(R0); // Object. |
| 982 | |
| 983 | // Push pointer to stack values, so that the stub can overwrite the object |
| 984 | // (pushed for the decompiler) with the rhs. |
| 985 | masm.computeEffectiveAddress( |
| 986 | Address(masm.getStackPointer(), 3 * sizeof(Value)), R0.scratchReg()); |
| 987 | masm.push(R0.scratchReg()); |
| 988 | |
| 989 | masm.push(ICStubReg); |
| 990 | pushStubPayload(masm, R0.scratchReg()); |
| 991 | |
| 992 | using Fn = bool (*)(JSContext*, BaselineFrame*, ICFallbackStub*, Value*, |
| 993 | HandleValue, HandleValue, HandleValue); |
| 994 | return tailCallVM<Fn, DoSetElemFallback>(masm); |
| 995 | } |
| 996 | |
| 997 | // |
| 998 | // In_Fallback |
| 999 | // |
| 1000 | |
| 1001 | bool DoInFallback(JSContext* cx, BaselineFrame* frame, ICFallbackStub* stub, |
| 1002 | HandleValue key, HandleValue objValue, |
| 1003 | MutableHandleValue res) { |
| 1004 | stub->incrementEnteredCount(); |
| 1005 | MaybeNotifyWarp(frame->outerScript(), stub); |
| 1006 | FallbackICSpew(cx, stub, "In"); |
| 1007 | |
| 1008 | if (!objValue.isObject()) { |
| 1009 | ReportInNotObjectError(cx, key, objValue); |
| 1010 | return false; |
| 1011 | } |
| 1012 | |
| 1013 | TryAttachStub<HasPropIRGenerator>("In", cx, frame, stub, CacheKind::In, key, |
| 1014 | objValue); |
| 1015 | |
| 1016 | RootedObject obj(cx, &objValue.toObject()); |
| 1017 | bool cond = false; |
| 1018 | if (!OperatorIn(cx, key, obj, &cond)) { |
| 1019 | return false; |
| 1020 | } |
| 1021 | res.setBoolean(cond); |
| 1022 | |
| 1023 | return true; |
| 1024 | } |
| 1025 | |
| 1026 | bool FallbackICCodeCompiler::emit_In() { |
| 1027 | EmitRestoreTailCallReg(masm); |
| 1028 | |
| 1029 | // Sync for the decompiler. |
| 1030 | masm.pushValue(R0); |
| 1031 | masm.pushValue(R1); |
| 1032 | |
| 1033 | // Push arguments. |
| 1034 | masm.pushValue(R1); |
| 1035 | masm.pushValue(R0); |
| 1036 | masm.push(ICStubReg); |
| 1037 | pushStubPayload(masm, R0.scratchReg()); |
| 1038 | |
| 1039 | using Fn = bool (*)(JSContext*, BaselineFrame*, ICFallbackStub*, HandleValue, |
| 1040 | HandleValue, MutableHandleValue); |
| 1041 | return tailCallVM<Fn, DoInFallback>(masm); |
| 1042 | } |
| 1043 | |
| 1044 | // |
| 1045 | // HasOwn_Fallback |
| 1046 | // |
| 1047 | |
| 1048 | bool DoHasOwnFallback(JSContext* cx, BaselineFrame* frame, ICFallbackStub* stub, |
| 1049 | HandleValue keyValue, HandleValue objValue, |
| 1050 | MutableHandleValue res) { |
| 1051 | stub->incrementEnteredCount(); |
| 1052 | MaybeNotifyWarp(frame->outerScript(), stub); |
| 1053 | FallbackICSpew(cx, stub, "HasOwn"); |
| 1054 | |
| 1055 | TryAttachStub<HasPropIRGenerator>("HasOwn", cx, frame, stub, |
| 1056 | CacheKind::HasOwn, keyValue, objValue); |
| 1057 | |
| 1058 | bool found; |
| 1059 | if (!HasOwnProperty(cx, objValue, keyValue, &found)) { |
| 1060 | return false; |
| 1061 | } |
| 1062 | |
| 1063 | res.setBoolean(found); |
| 1064 | return true; |
| 1065 | } |
| 1066 | |
| 1067 | bool FallbackICCodeCompiler::emit_HasOwn() { |
| 1068 | EmitRestoreTailCallReg(masm); |
| 1069 | |
| 1070 | // Sync for the decompiler. |
| 1071 | masm.pushValue(R0); |
| 1072 | masm.pushValue(R1); |
| 1073 | |
| 1074 | // Push arguments. |
| 1075 | masm.pushValue(R1); |
| 1076 | masm.pushValue(R0); |
| 1077 | masm.push(ICStubReg); |
| 1078 | pushStubPayload(masm, R0.scratchReg()); |
| 1079 | |
| 1080 | using Fn = bool (*)(JSContext*, BaselineFrame*, ICFallbackStub*, HandleValue, |
| 1081 | HandleValue, MutableHandleValue); |
| 1082 | return tailCallVM<Fn, DoHasOwnFallback>(masm); |
| 1083 | } |
| 1084 | |
| 1085 | // |
| 1086 | // CheckPrivate_Fallback |
| 1087 | // |
| 1088 | |
| 1089 | bool DoCheckPrivateFieldFallback(JSContext* cx, BaselineFrame* frame, |
| 1090 | ICFallbackStub* stub, HandleValue objValue, |
| 1091 | HandleValue keyValue, MutableHandleValue res) { |
| 1092 | stub->incrementEnteredCount(); |
| 1093 | MaybeNotifyWarp(frame->outerScript(), stub); |
| 1094 | |
| 1095 | jsbytecode* pc = StubOffsetToPc(stub, frame->script()); |
| 1096 | |
| 1097 | FallbackICSpew(cx, stub, "CheckPrivateField"); |
| 1098 | |
| 1099 | MOZ_ASSERT(keyValue.isSymbol() && keyValue.toSymbol()->isPrivateName())do { static_assert( mozilla::detail::AssertionConditionType< decltype(keyValue.isSymbol() && keyValue.toSymbol()-> isPrivateName())>::isValid, "invalid assertion condition") ; if ((__builtin_expect(!!(!(!!(keyValue.isSymbol() && keyValue.toSymbol()->isPrivateName()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("keyValue.isSymbol() && keyValue.toSymbol()->isPrivateName()" , "/var/lib/jenkins/workspace/firefox-scan-build/js/src/jit/BaselineIC.cpp" , 1099); AnnotateMozCrashReason("MOZ_ASSERT" "(" "keyValue.isSymbol() && keyValue.toSymbol()->isPrivateName()" ")"); do { *((volatile int*)__null) = 1099; __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 1100 | |
| 1101 | TryAttachStub<CheckPrivateFieldIRGenerator>("CheckPrivate", cx, frame, stub, |
| 1102 | CacheKind::CheckPrivateField, |
| 1103 | keyValue, objValue); |
| 1104 | |
| 1105 | bool result; |
| 1106 | if (!CheckPrivateFieldOperation(cx, pc, objValue, keyValue, &result)) { |
| 1107 | return false; |
| 1108 | } |
| 1109 | |
| 1110 | res.setBoolean(result); |
| 1111 | return true; |
| 1112 | } |
| 1113 | |
| 1114 | bool FallbackICCodeCompiler::emit_CheckPrivateField() { |
| 1115 | EmitRestoreTailCallReg(masm); |
| 1116 | |
| 1117 | // Sync for the decompiler. |
| 1118 | masm.pushValue(R0); |
| 1119 | masm.pushValue(R1); |
| 1120 | |
| 1121 | // Push arguments. |
| 1122 | masm.pushValue(R1); |
| 1123 | masm.pushValue(R0); |
| 1124 | masm.push(ICStubReg); |
| 1125 | pushStubPayload(masm, R0.scratchReg()); |
| 1126 | |
| 1127 | using Fn = bool (*)(JSContext*, BaselineFrame*, ICFallbackStub*, HandleValue, |
| 1128 | HandleValue, MutableHandleValue); |
| 1129 | return tailCallVM<Fn, DoCheckPrivateFieldFallback>(masm); |
| 1130 | } |
| 1131 | |
| 1132 | // |
| 1133 | // GetName_Fallback |
| 1134 | // |
| 1135 | |
| 1136 | bool DoGetNameFallback(JSContext* cx, BaselineFrame* frame, |
| 1137 | ICFallbackStub* stub, HandleObject envChain, |
| 1138 | MutableHandleValue res) { |
| 1139 | stub->incrementEnteredCount(); |
| 1140 | MaybeNotifyWarp(frame->outerScript(), stub); |
| 1141 | |
| 1142 | RootedScript script(cx, frame->script()); |
| 1143 | jsbytecode* pc = StubOffsetToPc(stub, script); |
| 1144 | mozilla::DebugOnly<JSOp> op = JSOp(*pc); |
| 1145 | FallbackICSpew(cx, stub, "GetName(%s)", CodeName(JSOp(*pc))); |
| 1146 | |
| 1147 | MOZ_ASSERT(op == JSOp::GetName || op == JSOp::GetGName)do { static_assert( mozilla::detail::AssertionConditionType< decltype(op == JSOp::GetName || op == JSOp::GetGName)>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(op == JSOp::GetName || op == JSOp::GetGName))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("op == JSOp::GetName || op == JSOp::GetGName" , "/var/lib/jenkins/workspace/firefox-scan-build/js/src/jit/BaselineIC.cpp" , 1147); AnnotateMozCrashReason("MOZ_ASSERT" "(" "op == JSOp::GetName || op == JSOp::GetGName" ")"); do { *((volatile int*)__null) = 1147; __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 1148 | |
| 1149 | Rooted<PropertyName*> name(cx, script->getName(pc)); |
| 1150 | |
| 1151 | TryAttachStub<GetNameIRGenerator>("GetName", cx, frame, stub, envChain, name); |
| 1152 | |
| 1153 | static_assert(JSOpLength_GetGName == JSOpLength_GetName, |
| 1154 | "Otherwise our check for JSOp::Typeof isn't ok"); |
| 1155 | if (IsTypeOfNameOp(JSOp(pc[JSOpLength_GetGName]))) { |
| 1156 | if (!GetEnvironmentName<GetNameMode::TypeOf>(cx, envChain, name, res)) { |
| 1157 | return false; |
| 1158 | } |
| 1159 | } else { |
| 1160 | if (!GetEnvironmentName<GetNameMode::Normal>(cx, envChain, name, res)) { |
| 1161 | return false; |
| 1162 | } |
| 1163 | } |
| 1164 | |
| 1165 | return true; |
| 1166 | } |
| 1167 | |
| 1168 | bool FallbackICCodeCompiler::emit_GetName() { |
| 1169 | static_assert(R0 == JSReturnOperand); |
| 1170 | |
| 1171 | EmitRestoreTailCallReg(masm); |
| 1172 | |
| 1173 | masm.push(R0.scratchReg()); |
| 1174 | masm.push(ICStubReg); |
| 1175 | pushStubPayload(masm, R0.scratchReg()); |
| 1176 | |
| 1177 | using Fn = bool (*)(JSContext*, BaselineFrame*, ICFallbackStub*, HandleObject, |
| 1178 | MutableHandleValue); |
| 1179 | return tailCallVM<Fn, DoGetNameFallback>(masm); |
| 1180 | } |
| 1181 | |
| 1182 | // |
| 1183 | // BindName_Fallback |
| 1184 | // |
| 1185 | |
| 1186 | bool DoBindNameFallback(JSContext* cx, BaselineFrame* frame, |
| 1187 | ICFallbackStub* stub, HandleObject envChain, |
| 1188 | MutableHandleValue res) { |
| 1189 | stub->incrementEnteredCount(); |
| 1190 | MaybeNotifyWarp(frame->outerScript(), stub); |
| 1191 | |
| 1192 | jsbytecode* pc = StubOffsetToPc(stub, frame->script()); |
| 1193 | JSOp op = JSOp(*pc); |
| 1194 | FallbackICSpew(cx, stub, "BindName(%s)", CodeName(JSOp(*pc))); |
| 1195 | |
| 1196 | MOZ_ASSERT(op == JSOp::BindName || op == JSOp::BindUnqualifiedName ||do { static_assert( mozilla::detail::AssertionConditionType< decltype(op == JSOp::BindName || op == JSOp::BindUnqualifiedName || op == JSOp::BindUnqualifiedGName)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(op == JSOp::BindName || op == JSOp::BindUnqualifiedName || op == JSOp::BindUnqualifiedGName ))), 0))) { do { } while (false); MOZ_ReportAssertionFailure( "op == JSOp::BindName || op == JSOp::BindUnqualifiedName || op == JSOp::BindUnqualifiedGName" , "/var/lib/jenkins/workspace/firefox-scan-build/js/src/jit/BaselineIC.cpp" , 1197); AnnotateMozCrashReason("MOZ_ASSERT" "(" "op == JSOp::BindName || op == JSOp::BindUnqualifiedName || op == JSOp::BindUnqualifiedGName" ")"); do { *((volatile int*)__null) = 1197; __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 1197 | op == JSOp::BindUnqualifiedGName)do { static_assert( mozilla::detail::AssertionConditionType< decltype(op == JSOp::BindName || op == JSOp::BindUnqualifiedName || op == JSOp::BindUnqualifiedGName)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(op == JSOp::BindName || op == JSOp::BindUnqualifiedName || op == JSOp::BindUnqualifiedGName ))), 0))) { do { } while (false); MOZ_ReportAssertionFailure( "op == JSOp::BindName || op == JSOp::BindUnqualifiedName || op == JSOp::BindUnqualifiedGName" , "/var/lib/jenkins/workspace/firefox-scan-build/js/src/jit/BaselineIC.cpp" , 1197); AnnotateMozCrashReason("MOZ_ASSERT" "(" "op == JSOp::BindName || op == JSOp::BindUnqualifiedName || op == JSOp::BindUnqualifiedGName" ")"); do { *((volatile int*)__null) = 1197; __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 1198 | |
| 1199 | Rooted<PropertyName*> name(cx, frame->script()->getName(pc)); |
| 1200 | |
| 1201 | TryAttachStub<BindNameIRGenerator>("BindName", cx, frame, stub, envChain, |
| 1202 | name); |
| 1203 | |
| 1204 | JSObject* env; |
| 1205 | if (op == JSOp::BindName) { |
| 1206 | env = LookupNameWithGlobalDefault(cx, name, envChain); |
| 1207 | } else { |
| 1208 | env = LookupNameUnqualified(cx, name, envChain); |
| 1209 | } |
| 1210 | if (!env) { |
| 1211 | return false; |
| 1212 | } |
| 1213 | |
| 1214 | res.setObject(*env); |
| 1215 | return true; |
| 1216 | } |
| 1217 | |
| 1218 | bool FallbackICCodeCompiler::emit_BindName() { |
| 1219 | static_assert(R0 == JSReturnOperand); |
| 1220 | |
| 1221 | EmitRestoreTailCallReg(masm); |
| 1222 | |
| 1223 | masm.push(R0.scratchReg()); |
| 1224 | masm.push(ICStubReg); |
| 1225 | pushStubPayload(masm, R0.scratchReg()); |
| 1226 | |
| 1227 | using Fn = bool (*)(JSContext*, BaselineFrame*, ICFallbackStub*, HandleObject, |
| 1228 | MutableHandleValue); |
| 1229 | return tailCallVM<Fn, DoBindNameFallback>(masm); |
| 1230 | } |
| 1231 | |
| 1232 | // |
| 1233 | // GetIntrinsic_Fallback |
| 1234 | // |
| 1235 | |
| 1236 | bool DoGetIntrinsicFallback(JSContext* cx, BaselineFrame* frame, |
| 1237 | ICFallbackStub* stub, MutableHandleValue res) { |
| 1238 | stub->incrementEnteredCount(); |
| 1239 | MaybeNotifyWarp(frame->outerScript(), stub); |
| 1240 | |
| 1241 | RootedScript script(cx, frame->script()); |
| 1242 | jsbytecode* pc = StubOffsetToPc(stub, script); |
| 1243 | mozilla::DebugOnly<JSOp> op = JSOp(*pc); |
| 1244 | FallbackICSpew(cx, stub, "GetIntrinsic(%s)", CodeName(JSOp(*pc))); |
| 1245 | |
| 1246 | MOZ_ASSERT(op == JSOp::GetIntrinsic)do { static_assert( mozilla::detail::AssertionConditionType< decltype(op == JSOp::GetIntrinsic)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(op == JSOp::GetIntrinsic))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("op == JSOp::GetIntrinsic" , "/var/lib/jenkins/workspace/firefox-scan-build/js/src/jit/BaselineIC.cpp" , 1246); AnnotateMozCrashReason("MOZ_ASSERT" "(" "op == JSOp::GetIntrinsic" ")"); do { *((volatile int*)__null) = 1246; __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 1247 | |
| 1248 | if (!GetIntrinsicOperation(cx, script, pc, res)) { |
| 1249 | return false; |
| 1250 | } |
| 1251 | |
| 1252 | TryAttachStub<GetIntrinsicIRGenerator>("GetIntrinsic", cx, frame, stub, res); |
| 1253 | |
| 1254 | return true; |
| 1255 | } |
| 1256 | |
| 1257 | bool FallbackICCodeCompiler::emit_GetIntrinsic() { |
| 1258 | EmitRestoreTailCallReg(masm); |
| 1259 | |
| 1260 | masm.push(ICStubReg); |
| 1261 | pushStubPayload(masm, R0.scratchReg()); |
| 1262 | |
| 1263 | using Fn = |
| 1264 | bool (*)(JSContext*, BaselineFrame*, ICFallbackStub*, MutableHandleValue); |
| 1265 | return tailCallVM<Fn, DoGetIntrinsicFallback>(masm); |
| 1266 | } |
| 1267 | |
| 1268 | // |
| 1269 | // GetProp_Fallback |
| 1270 | // |
| 1271 | |
| 1272 | bool DoGetPropFallback(JSContext* cx, BaselineFrame* frame, |
| 1273 | ICFallbackStub* stub, MutableHandleValue val, |
| 1274 | MutableHandleValue res) { |
| 1275 | stub->incrementEnteredCount(); |
| 1276 | MaybeNotifyWarp(frame->outerScript(), stub); |
| 1277 | |
| 1278 | RootedScript script(cx, frame->script()); |
| 1279 | jsbytecode* pc = StubOffsetToPc(stub, script); |
| 1280 | JSOp op = JSOp(*pc); |
| 1281 | FallbackICSpew(cx, stub, "GetProp(%s)", CodeName(op)); |
| 1282 | |
| 1283 | MOZ_ASSERT(op == JSOp::GetProp || op == JSOp::GetBoundName)do { static_assert( mozilla::detail::AssertionConditionType< decltype(op == JSOp::GetProp || op == JSOp::GetBoundName)> ::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(op == JSOp::GetProp || op == JSOp::GetBoundName))), 0 ))) { do { } while (false); MOZ_ReportAssertionFailure("op == JSOp::GetProp || op == JSOp::GetBoundName" , "/var/lib/jenkins/workspace/firefox-scan-build/js/src/jit/BaselineIC.cpp" , 1283); AnnotateMozCrashReason("MOZ_ASSERT" "(" "op == JSOp::GetProp || op == JSOp::GetBoundName" ")"); do { *((volatile int*)__null) = 1283; __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 1284 | |
| 1285 | Rooted<PropertyName*> name(cx, script->getName(pc)); |
| 1286 | RootedValue idVal(cx, StringValue(name)); |
| 1287 | |
| 1288 | TryAttachStub<GetPropIRGenerator>("GetProp", cx, frame, stub, |
| 1289 | CacheKind::GetProp, val, idVal); |
| 1290 | |
| 1291 | if (op == JSOp::GetBoundName) { |
| 1292 | RootedObject env(cx, &val.toObject()); |
| 1293 | RootedId id(cx, NameToId(name)); |
| 1294 | return GetNameBoundInEnvironment(cx, env, id, res); |
| 1295 | } |
| 1296 | |
| 1297 | MOZ_ASSERT(op == JSOp::GetProp)do { static_assert( mozilla::detail::AssertionConditionType< decltype(op == JSOp::GetProp)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(op == JSOp::GetProp))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("op == JSOp::GetProp" , "/var/lib/jenkins/workspace/firefox-scan-build/js/src/jit/BaselineIC.cpp" , 1297); AnnotateMozCrashReason("MOZ_ASSERT" "(" "op == JSOp::GetProp" ")"); do { *((volatile int*)__null) = 1297; __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 1298 | if (!GetProperty(cx, val, name, res)) { |
| 1299 | return false; |
| 1300 | } |
| 1301 | |
| 1302 | return true; |
| 1303 | } |
| 1304 | |
| 1305 | bool DoGetPropSuperFallback(JSContext* cx, BaselineFrame* frame, |
| 1306 | ICFallbackStub* stub, HandleValue receiver, |
| 1307 | MutableHandleValue val, MutableHandleValue res) { |
| 1308 | stub->incrementEnteredCount(); |
| 1309 | MaybeNotifyWarp(frame->outerScript(), stub); |
| 1310 | |
| 1311 | RootedScript script(cx, frame->script()); |
| 1312 | jsbytecode* pc = StubOffsetToPc(stub, script); |
| 1313 | FallbackICSpew(cx, stub, "GetPropSuper(%s)", CodeName(JSOp(*pc))); |
| 1314 | |
| 1315 | MOZ_ASSERT(JSOp(*pc) == JSOp::GetPropSuper)do { static_assert( mozilla::detail::AssertionConditionType< decltype(JSOp(*pc) == JSOp::GetPropSuper)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(JSOp(*pc) == JSOp::GetPropSuper ))), 0))) { do { } while (false); MOZ_ReportAssertionFailure( "JSOp(*pc) == JSOp::GetPropSuper", "/var/lib/jenkins/workspace/firefox-scan-build/js/src/jit/BaselineIC.cpp" , 1315); AnnotateMozCrashReason("MOZ_ASSERT" "(" "JSOp(*pc) == JSOp::GetPropSuper" ")"); do { *((volatile int*)__null) = 1315; __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 1316 | |
| 1317 | Rooted<PropertyName*> name(cx, script->getName(pc)); |
| 1318 | RootedValue idVal(cx, StringValue(name)); |
| 1319 | |
| 1320 | // |val| is [[HomeObject]].[[Prototype]] which must be an Object or null. |
| 1321 | MOZ_ASSERT(val.isObjectOrNull())do { static_assert( mozilla::detail::AssertionConditionType< decltype(val.isObjectOrNull())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(val.isObjectOrNull()))), 0)) ) { do { } while (false); MOZ_ReportAssertionFailure("val.isObjectOrNull()" , "/var/lib/jenkins/workspace/firefox-scan-build/js/src/jit/BaselineIC.cpp" , 1321); AnnotateMozCrashReason("MOZ_ASSERT" "(" "val.isObjectOrNull()" ")"); do { *((volatile int*)__null) = 1321; __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 1322 | |
| 1323 | int valIndex = -1; |
| 1324 | RootedObject valObj( |
| 1325 | cx, ToObjectFromStackForPropertyAccess(cx, val, valIndex, name)); |
| 1326 | if (!valObj) { |
| 1327 | return false; |
| 1328 | } |
| 1329 | |
| 1330 | TryAttachStub<GetPropIRGenerator>("GetPropSuper", cx, frame, stub, |
| 1331 | CacheKind::GetPropSuper, val, idVal); |
| 1332 | |
| 1333 | if (!GetProperty(cx, valObj, receiver, name, res)) { |
| 1334 | return false; |
| 1335 | } |
| 1336 | |
| 1337 | return true; |
| 1338 | } |
| 1339 | |
| 1340 | bool FallbackICCodeCompiler::emitGetProp(bool hasReceiver) { |
| 1341 | static_assert(R0 == JSReturnOperand); |
| 1342 | |
| 1343 | EmitRestoreTailCallReg(masm); |
| 1344 | |
| 1345 | // Super property getters use a |this| that differs from base object |
| 1346 | if (hasReceiver) { |
| 1347 | // Push arguments. |
| 1348 | masm.pushValue(R0); |
| 1349 | masm.pushValue(R1); |
| 1350 | masm.push(ICStubReg); |
| 1351 | masm.pushBaselineFramePtr(FramePointer, R0.scratchReg()); |
| 1352 | |
| 1353 | using Fn = bool (*)(JSContext*, BaselineFrame*, ICFallbackStub*, |
| 1354 | HandleValue, MutableHandleValue, MutableHandleValue); |
| 1355 | if (!tailCallVM<Fn, DoGetPropSuperFallback>(masm)) { |
| 1356 | return false; |
| 1357 | } |
| 1358 | } else { |
| 1359 | // Ensure stack is fully synced for the expression decompiler. |
| 1360 | masm.pushValue(R0); |
| 1361 | |
| 1362 | // Push arguments. |
| 1363 | masm.pushValue(R0); |
| 1364 | masm.push(ICStubReg); |
| 1365 | masm.pushBaselineFramePtr(FramePointer, R0.scratchReg()); |
| 1366 | |
| 1367 | using Fn = bool (*)(JSContext*, BaselineFrame*, ICFallbackStub*, |
| 1368 | MutableHandleValue, MutableHandleValue); |
| 1369 | if (!tailCallVM<Fn, DoGetPropFallback>(masm)) { |
| 1370 | return false; |
| 1371 | } |
| 1372 | } |
| 1373 | |
| 1374 | // This is the resume point used when bailout rewrites call stack to undo |
| 1375 | // Ion inlined frames. The return address pushed onto reconstructed stack |
| 1376 | // will point here. |
| 1377 | assumeStubFrame(); |
| 1378 | if (hasReceiver) { |
| 1379 | code.initBailoutReturnOffset(BailoutReturnKind::GetPropSuper, |
| 1380 | masm.currentOffset()); |
| 1381 | } else { |
| 1382 | code.initBailoutReturnOffset(BailoutReturnKind::GetProp, |
| 1383 | masm.currentOffset()); |
| 1384 | } |
| 1385 | |
| 1386 | leaveStubFrame(masm); |
| 1387 | |
| 1388 | EmitReturnFromIC(masm); |
| 1389 | return true; |
| 1390 | } |
| 1391 | |
| 1392 | bool FallbackICCodeCompiler::emit_GetProp() { |
| 1393 | return emitGetProp(/* hasReceiver = */ false); |
| 1394 | } |
| 1395 | |
| 1396 | bool FallbackICCodeCompiler::emit_GetPropSuper() { |
| 1397 | return emitGetProp(/* hasReceiver = */ true); |
| 1398 | } |
| 1399 | |
| 1400 | // |
| 1401 | // SetProp_Fallback |
| 1402 | // |
| 1403 | |
| 1404 | bool DoSetPropFallback(JSContext* cx, BaselineFrame* frame, |
| 1405 | ICFallbackStub* stub, Value* stack, HandleValue lhs, |
| 1406 | HandleValue rhs) { |
| 1407 | using DeferType = SetPropIRGenerator::DeferType; |
| 1408 | |
| 1409 | stub->incrementEnteredCount(); |
| 1410 | MaybeNotifyWarp(frame->outerScript(), stub); |
| 1411 | |
| 1412 | RootedScript script(cx, frame->script()); |
| 1413 | jsbytecode* pc = StubOffsetToPc(stub, script); |
| 1414 | JSOp op = JSOp(*pc); |
| 1415 | FallbackICSpew(cx, stub, "SetProp(%s)", CodeName(op)); |
| 1416 | |
| 1417 | MOZ_ASSERT(op == JSOp::SetProp || op == JSOp::StrictSetProp ||do { static_assert( mozilla::detail::AssertionConditionType< decltype(op == JSOp::SetProp || op == JSOp::StrictSetProp || op == JSOp::SetName || op == JSOp::StrictSetName || op == JSOp:: SetGName || op == JSOp::StrictSetGName || op == JSOp::InitProp || op == JSOp::InitLockedProp || op == JSOp::InitHiddenProp || op == JSOp::InitGLexical)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(op == JSOp::SetProp || op == JSOp::StrictSetProp || op == JSOp::SetName || op == JSOp::StrictSetName || op == JSOp::SetGName || op == JSOp::StrictSetGName || op == JSOp::InitProp || op == JSOp::InitLockedProp || op == JSOp:: InitHiddenProp || op == JSOp::InitGLexical))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("op == JSOp::SetProp || op == JSOp::StrictSetProp || op == JSOp::SetName || op == JSOp::StrictSetName || op == JSOp::SetGName || op == JSOp::StrictSetGName || op == JSOp::InitProp || op == JSOp::InitLockedProp || op == JSOp::InitHiddenProp || op == JSOp::InitGLexical" , "/var/lib/jenkins/workspace/firefox-scan-build/js/src/jit/BaselineIC.cpp" , 1421); AnnotateMozCrashReason("MOZ_ASSERT" "(" "op == JSOp::SetProp || op == JSOp::StrictSetProp || op == JSOp::SetName || op == JSOp::StrictSetName || op == JSOp::SetGName || op == JSOp::StrictSetGName || op == JSOp::InitProp || op == JSOp::InitLockedProp || op == JSOp::InitHiddenProp || op == JSOp::InitGLexical" ")"); do { *((volatile int*)__null) = 1421; __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 1418 | op == JSOp::SetName || op == JSOp::StrictSetName ||do { static_assert( mozilla::detail::AssertionConditionType< decltype(op == JSOp::SetProp || op == JSOp::StrictSetProp || op == JSOp::SetName || op == JSOp::StrictSetName || op == JSOp:: SetGName || op == JSOp::StrictSetGName || op == JSOp::InitProp || op == JSOp::InitLockedProp || op == JSOp::InitHiddenProp || op == JSOp::InitGLexical)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(op == JSOp::SetProp || op == JSOp::StrictSetProp || op == JSOp::SetName || op == JSOp::StrictSetName || op == JSOp::SetGName || op == JSOp::StrictSetGName || op == JSOp::InitProp || op == JSOp::InitLockedProp || op == JSOp:: InitHiddenProp || op == JSOp::InitGLexical))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("op == JSOp::SetProp || op == JSOp::StrictSetProp || op == JSOp::SetName || op == JSOp::StrictSetName || op == JSOp::SetGName || op == JSOp::StrictSetGName || op == JSOp::InitProp || op == JSOp::InitLockedProp || op == JSOp::InitHiddenProp || op == JSOp::InitGLexical" , "/var/lib/jenkins/workspace/firefox-scan-build/js/src/jit/BaselineIC.cpp" , 1421); AnnotateMozCrashReason("MOZ_ASSERT" "(" "op == JSOp::SetProp || op == JSOp::StrictSetProp || op == JSOp::SetName || op == JSOp::StrictSetName || op == JSOp::SetGName || op == JSOp::StrictSetGName || op == JSOp::InitProp || op == JSOp::InitLockedProp || op == JSOp::InitHiddenProp || op == JSOp::InitGLexical" ")"); do { *((volatile int*)__null) = 1421; __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 1419 | op == JSOp::SetGName || op == JSOp::StrictSetGName ||do { static_assert( mozilla::detail::AssertionConditionType< decltype(op == JSOp::SetProp || op == JSOp::StrictSetProp || op == JSOp::SetName || op == JSOp::StrictSetName || op == JSOp:: SetGName || op == JSOp::StrictSetGName || op == JSOp::InitProp || op == JSOp::InitLockedProp || op == JSOp::InitHiddenProp || op == JSOp::InitGLexical)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(op == JSOp::SetProp || op == JSOp::StrictSetProp || op == JSOp::SetName || op == JSOp::StrictSetName || op == JSOp::SetGName || op == JSOp::StrictSetGName || op == JSOp::InitProp || op == JSOp::InitLockedProp || op == JSOp:: InitHiddenProp || op == JSOp::InitGLexical))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("op == JSOp::SetProp || op == JSOp::StrictSetProp || op == JSOp::SetName || op == JSOp::StrictSetName || op == JSOp::SetGName || op == JSOp::StrictSetGName || op == JSOp::InitProp || op == JSOp::InitLockedProp || op == JSOp::InitHiddenProp || op == JSOp::InitGLexical" , "/var/lib/jenkins/workspace/firefox-scan-build/js/src/jit/BaselineIC.cpp" , 1421); AnnotateMozCrashReason("MOZ_ASSERT" "(" "op == JSOp::SetProp || op == JSOp::StrictSetProp || op == JSOp::SetName || op == JSOp::StrictSetName || op == JSOp::SetGName || op == JSOp::StrictSetGName || op == JSOp::InitProp || op == JSOp::InitLockedProp || op == JSOp::InitHiddenProp || op == JSOp::InitGLexical" ")"); do { *((volatile int*)__null) = 1421; __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 1420 | op == JSOp::InitProp || op == JSOp::InitLockedProp ||do { static_assert( mozilla::detail::AssertionConditionType< decltype(op == JSOp::SetProp || op == JSOp::StrictSetProp || op == JSOp::SetName || op == JSOp::StrictSetName || op == JSOp:: SetGName || op == JSOp::StrictSetGName || op == JSOp::InitProp || op == JSOp::InitLockedProp || op == JSOp::InitHiddenProp || op == JSOp::InitGLexical)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(op == JSOp::SetProp || op == JSOp::StrictSetProp || op == JSOp::SetName || op == JSOp::StrictSetName || op == JSOp::SetGName || op == JSOp::StrictSetGName || op == JSOp::InitProp || op == JSOp::InitLockedProp || op == JSOp:: InitHiddenProp || op == JSOp::InitGLexical))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("op == JSOp::SetProp || op == JSOp::StrictSetProp || op == JSOp::SetName || op == JSOp::StrictSetName || op == JSOp::SetGName || op == JSOp::StrictSetGName || op == JSOp::InitProp || op == JSOp::InitLockedProp || op == JSOp::InitHiddenProp || op == JSOp::InitGLexical" , "/var/lib/jenkins/workspace/firefox-scan-build/js/src/jit/BaselineIC.cpp" , 1421); AnnotateMozCrashReason("MOZ_ASSERT" "(" "op == JSOp::SetProp || op == JSOp::StrictSetProp || op == JSOp::SetName || op == JSOp::StrictSetName || op == JSOp::SetGName || op == JSOp::StrictSetGName || op == JSOp::InitProp || op == JSOp::InitLockedProp || op == JSOp::InitHiddenProp || op == JSOp::InitGLexical" ")"); do { *((volatile int*)__null) = 1421; __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 1421 | op == JSOp::InitHiddenProp || op == JSOp::InitGLexical)do { static_assert( mozilla::detail::AssertionConditionType< decltype(op == JSOp::SetProp || op == JSOp::StrictSetProp || op == JSOp::SetName || op == JSOp::StrictSetName || op == JSOp:: SetGName || op == JSOp::StrictSetGName || op == JSOp::InitProp || op == JSOp::InitLockedProp || op == JSOp::InitHiddenProp || op == JSOp::InitGLexical)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(op == JSOp::SetProp || op == JSOp::StrictSetProp || op == JSOp::SetName || op == JSOp::StrictSetName || op == JSOp::SetGName || op == JSOp::StrictSetGName || op == JSOp::InitProp || op == JSOp::InitLockedProp || op == JSOp:: InitHiddenProp || op == JSOp::InitGLexical))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("op == JSOp::SetProp || op == JSOp::StrictSetProp || op == JSOp::SetName || op == JSOp::StrictSetName || op == JSOp::SetGName || op == JSOp::StrictSetGName || op == JSOp::InitProp || op == JSOp::InitLockedProp || op == JSOp::InitHiddenProp || op == JSOp::InitGLexical" , "/var/lib/jenkins/workspace/firefox-scan-build/js/src/jit/BaselineIC.cpp" , 1421); AnnotateMozCrashReason("MOZ_ASSERT" "(" "op == JSOp::SetProp || op == JSOp::StrictSetProp || op == JSOp::SetName || op == JSOp::StrictSetName || op == JSOp::SetGName || op == JSOp::StrictSetGName || op == JSOp::InitProp || op == JSOp::InitLockedProp || op == JSOp::InitHiddenProp || op == JSOp::InitGLexical" ")"); do { *((volatile int*)__null) = 1421; __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 1422 | |
| 1423 | Rooted<PropertyName*> name(cx, script->getName(pc)); |
| 1424 | RootedId id(cx, NameToId(name)); |
| 1425 | |
| 1426 | int lhsIndex = stack ? -2 : JSDVG_IGNORE_STACK0; |
| 1427 | RootedObject obj(cx, |
| 1428 | ToObjectFromStackForPropertyAccess(cx, lhs, lhsIndex, id)); |
| 1429 | if (!obj) { |
| 1430 | return false; |
| 1431 | } |
| 1432 | Rooted<Shape*> oldShape(cx, obj->shape()); |
| 1433 | |
| 1434 | DeferType deferType = DeferType::None; |
| 1435 | bool attached = false; |
| 1436 | MaybeTransition(cx, frame, stub); |
| 1437 | |
| 1438 | if (stub->state().canAttachStub()) { |
| 1439 | RootedValue idVal(cx, StringValue(name)); |
| 1440 | SetPropIRGenerator gen(cx, script, pc, CacheKind::SetProp, stub->state(), |
| 1441 | lhs, idVal, rhs); |
| 1442 | switch (gen.tryAttachStub()) { |
| 1443 | case AttachDecision::Attach: { |
| 1444 | ICScript* icScript = frame->icScript(); |
| 1445 | ICAttachResult result = AttachBaselineCacheIRStub( |
| 1446 | cx, gen.writerRef(), gen.cacheKind(), frame->script(), icScript, |
| 1447 | stub, gen.stubName()); |
| 1448 | if (result == ICAttachResult::Attached) { |
| 1449 | attached = true; |
| 1450 | JitSpew(JitSpew_BaselineIC, " Attached SetProp CacheIR stub"); |
| 1451 | } |
| 1452 | } break; |
| 1453 | case AttachDecision::NoAction: |
| 1454 | break; |
| 1455 | case AttachDecision::TemporarilyUnoptimizable: |
| 1456 | attached = true; |
| 1457 | break; |
| 1458 | case AttachDecision::Deferred: |
| 1459 | deferType = gen.deferType(); |
| 1460 | MOZ_ASSERT(deferType != DeferType::None)do { static_assert( mozilla::detail::AssertionConditionType< decltype(deferType != DeferType::None)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(deferType != DeferType::None ))), 0))) { do { } while (false); MOZ_ReportAssertionFailure( "deferType != DeferType::None", "/var/lib/jenkins/workspace/firefox-scan-build/js/src/jit/BaselineIC.cpp" , 1460); AnnotateMozCrashReason("MOZ_ASSERT" "(" "deferType != DeferType::None" ")"); do { *((volatile int*)__null) = 1460; __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 1461 | break; |
| 1462 | } |
| 1463 | if (deferType == DeferType::None && !attached) { |
| 1464 | stub->trackNotAttached(); |
| 1465 | } |
| 1466 | } |
| 1467 | |
| 1468 | if (op == JSOp::InitProp || op == JSOp::InitLockedProp || |
| 1469 | op == JSOp::InitHiddenProp) { |
| 1470 | if (!InitPropertyOperation(cx, pc, obj, name, rhs)) { |
| 1471 | return false; |
| 1472 | } |
| 1473 | } else if (op == JSOp::SetName || op == JSOp::StrictSetName || |
| 1474 | op == JSOp::SetGName || op == JSOp::StrictSetGName) { |
| 1475 | if (!SetNameOperation(cx, script, pc, obj, rhs)) { |
| 1476 | return false; |
| 1477 | } |
| 1478 | } else if (op == JSOp::InitGLexical) { |
| 1479 | ExtensibleLexicalEnvironmentObject* lexicalEnv; |
| 1480 | if (script->hasNonSyntacticScope()) { |
| 1481 | lexicalEnv = &NearestEnclosingExtensibleLexicalEnvironment( |
| 1482 | frame->environmentChain()); |
| 1483 | } else { |
| 1484 | lexicalEnv = &cx->global()->lexicalEnvironment(); |
| 1485 | } |
| 1486 | InitGlobalLexicalOperation(cx, lexicalEnv, script, pc, rhs); |
| 1487 | } else { |
| 1488 | MOZ_ASSERT(op == JSOp::SetProp || op == JSOp::StrictSetProp)do { static_assert( mozilla::detail::AssertionConditionType< decltype(op == JSOp::SetProp || op == JSOp::StrictSetProp)> ::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(op == JSOp::SetProp || op == JSOp::StrictSetProp))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("op == JSOp::SetProp || op == JSOp::StrictSetProp" , "/var/lib/jenkins/workspace/firefox-scan-build/js/src/jit/BaselineIC.cpp" , 1488); AnnotateMozCrashReason("MOZ_ASSERT" "(" "op == JSOp::SetProp || op == JSOp::StrictSetProp" ")"); do { *((volatile int*)__null) = 1488; __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 1489 | |
| 1490 | ObjectOpResult result; |
| 1491 | if (!SetProperty(cx, obj, id, rhs, lhs, result) || |
| 1492 | !result.checkStrictModeError(cx, obj, id, op == JSOp::StrictSetProp)) { |
| 1493 | return false; |
| 1494 | } |
| 1495 | } |
| 1496 | |
| 1497 | if (stack) { |
| 1498 | // Overwrite the LHS on the stack (pushed for the decompiler) with the RHS. |
| 1499 | MOZ_ASSERT(stack[1] == lhs)do { static_assert( mozilla::detail::AssertionConditionType< decltype(stack[1] == lhs)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(stack[1] == lhs))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("stack[1] == lhs" , "/var/lib/jenkins/workspace/firefox-scan-build/js/src/jit/BaselineIC.cpp" , 1499); AnnotateMozCrashReason("MOZ_ASSERT" "(" "stack[1] == lhs" ")"); do { *((volatile int*)__null) = 1499; __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 1500 | stack[1] = rhs; |
| 1501 | } |
| 1502 | |
| 1503 | if (attached) { |
| 1504 | return true; |
| 1505 | } |
| 1506 | |
| 1507 | // The SetProperty call might have entered this IC recursively, so try |
| 1508 | // to transition. |
| 1509 | MaybeTransition(cx, frame, stub); |
| 1510 | |
| 1511 | bool canAttachStub = stub->state().canAttachStub(); |
| 1512 | |
| 1513 | if (deferType != DeferType::None && canAttachStub) { |
| 1514 | RootedValue idVal(cx, StringValue(name)); |
| 1515 | SetPropIRGenerator gen(cx, script, pc, CacheKind::SetProp, stub->state(), |
| 1516 | lhs, idVal, rhs); |
| 1517 | |
| 1518 | MOZ_ASSERT(deferType == DeferType::AddSlot)do { static_assert( mozilla::detail::AssertionConditionType< decltype(deferType == DeferType::AddSlot)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(deferType == DeferType::AddSlot ))), 0))) { do { } while (false); MOZ_ReportAssertionFailure( "deferType == DeferType::AddSlot", "/var/lib/jenkins/workspace/firefox-scan-build/js/src/jit/BaselineIC.cpp" , 1518); AnnotateMozCrashReason("MOZ_ASSERT" "(" "deferType == DeferType::AddSlot" ")"); do { *((volatile int*)__null) = 1518; __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 1519 | AttachDecision decision = gen.tryAttachAddSlotStub(oldShape); |
| 1520 | |
| 1521 | switch (decision) { |
| 1522 | case AttachDecision::Attach: { |
| 1523 | ICScript* icScript = frame->icScript(); |
| 1524 | ICAttachResult result = AttachBaselineCacheIRStub( |
| 1525 | cx, gen.writerRef(), gen.cacheKind(), frame->script(), icScript, |
| 1526 | stub, gen.stubName()); |
| 1527 | if (result == ICAttachResult::Attached) { |
| 1528 | attached = true; |
| 1529 | JitSpew(JitSpew_BaselineIC, " Attached SetElem CacheIR stub"); |
| 1530 | } |
| 1531 | } break; |
| 1532 | case AttachDecision::NoAction: |
| 1533 | gen.trackAttached(IRGenerator::NotAttached); |
| 1534 | break; |
| 1535 | case AttachDecision::TemporarilyUnoptimizable: |
| 1536 | case AttachDecision::Deferred: |
| 1537 | MOZ_ASSERT_UNREACHABLE("Invalid attach result")do { static_assert( mozilla::detail::AssertionConditionType< decltype(false)>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(!!(false))), 0))) { do { } while ( false); MOZ_ReportAssertionFailure("false" " (" "MOZ_ASSERT_UNREACHABLE: " "Invalid attach result" ")", "/var/lib/jenkins/workspace/firefox-scan-build/js/src/jit/BaselineIC.cpp" , 1537); AnnotateMozCrashReason("MOZ_ASSERT" "(" "false" ") (" "MOZ_ASSERT_UNREACHABLE: " "Invalid attach result" ")"); do { *((volatile int*)__null) = 1537; __attribute__((nomerge)) :: abort(); } while (false); } } while (false); |
| 1538 | break; |
| 1539 | } |
| 1540 | if (!attached) { |
| 1541 | stub->trackNotAttached(); |
| 1542 | } |
| 1543 | } |
| 1544 | |
| 1545 | return true; |
| 1546 | } |
| 1547 | |
| 1548 | bool FallbackICCodeCompiler::emit_SetProp() { |
| 1549 | static_assert(R0 == JSReturnOperand); |
| 1550 | |
| 1551 | EmitRestoreTailCallReg(masm); |
| 1552 | |
| 1553 | // Ensure stack is fully synced for the expression decompiler. |
| 1554 | // Overwrite the RHS value on top of the stack with the object, then push |
| 1555 | // the RHS in R1 on top of that. |
| 1556 | masm.storeValue(R0, Address(masm.getStackPointer(), 0)); |
| 1557 | masm.pushValue(R1); |
| 1558 | |
| 1559 | // Push arguments. |
| 1560 | masm.pushValue(R1); |
| 1561 | masm.pushValue(R0); |
| 1562 | |
| 1563 | // Push pointer to stack values, so that the stub can overwrite the object |
| 1564 | // (pushed for the decompiler) with the RHS. |
| 1565 | masm.computeEffectiveAddress( |
| 1566 | Address(masm.getStackPointer(), 2 * sizeof(Value)), R0.scratchReg()); |
| 1567 | masm.push(R0.scratchReg()); |
| 1568 | |
| 1569 | masm.push(ICStubReg); |
| 1570 | pushStubPayload(masm, R0.scratchReg()); |
| 1571 | |
| 1572 | using Fn = bool (*)(JSContext*, BaselineFrame*, ICFallbackStub*, Value*, |
| 1573 | HandleValue, HandleValue); |
| 1574 | if (!tailCallVM<Fn, DoSetPropFallback>(masm)) { |
| 1575 | return false; |
| 1576 | } |
| 1577 | |
| 1578 | // This is the resume point used when bailout rewrites call stack to undo |
| 1579 | // Ion inlined frames. The return address pushed onto reconstructed stack |
| 1580 | // will point here. |
| 1581 | assumeStubFrame(); |
| 1582 | code.initBailoutReturnOffset(BailoutReturnKind::SetProp, |
| 1583 | masm.currentOffset()); |
| 1584 | |
| 1585 | leaveStubFrame(masm); |
| 1586 | EmitReturnFromIC(masm); |
| 1587 | |
| 1588 | return true; |
| 1589 | } |
| 1590 | |
| 1591 | // |
| 1592 | // Call_Fallback |
| 1593 | // |
| 1594 | |
| 1595 | bool DoCallFallback(JSContext* cx, BaselineFrame* frame, ICFallbackStub* stub, |
| 1596 | uint32_t argc, Value* vp, MutableHandleValue res) { |
| 1597 | stub->incrementEnteredCount(); |
| 1598 | MaybeNotifyWarp(frame->outerScript(), stub); |
| 1599 | |
| 1600 | RootedScript script(cx, frame->script()); |
| 1601 | jsbytecode* pc = StubOffsetToPc(stub, script); |
| 1602 | JSOp op = JSOp(*pc); |
| 1603 | FallbackICSpew(cx, stub, "Call(%s)", CodeName(op)); |
| 1604 | |
| 1605 | MOZ_ASSERT(argc == GET_ARGC(pc))do { static_assert( mozilla::detail::AssertionConditionType< decltype(argc == GET_ARGC(pc))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(argc == GET_ARGC(pc)))), 0)) ) { do { } while (false); MOZ_ReportAssertionFailure("argc == GET_ARGC(pc)" , "/var/lib/jenkins/workspace/firefox-scan-build/js/src/jit/BaselineIC.cpp" , 1605); AnnotateMozCrashReason("MOZ_ASSERT" "(" "argc == GET_ARGC(pc)" ")"); do { *((volatile int*)__null) = 1605; __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 1606 | bool constructing = |
| 1607 | (op == JSOp::New || op == JSOp::NewContent || op == JSOp::SuperCall); |
| 1608 | bool ignoresReturnValue = (op == JSOp::CallIgnoresRv); |
| 1609 | |
| 1610 | // Ensure vp array is rooted - we may GC in here. |
| 1611 | size_t numValues = argc + 2 + constructing; |
| 1612 | RootedExternalValueArray vpRoot(cx, numValues, vp); |
| 1613 | |
| 1614 | CallArgs callArgs = CallArgsFromSp(argc + constructing, vp + numValues, |
| 1615 | constructing, ignoresReturnValue); |
| 1616 | RootedValue callee(cx, vp[0]); |
| 1617 | RootedValue newTarget(cx, constructing ? callArgs.newTarget() : NullValue()); |
| 1618 | |
| 1619 | // Transition stub state to megamorphic or generic if warranted. |
| 1620 | MaybeTransition(cx, frame, stub); |
| 1621 | |
| 1622 | bool canAttachStub = stub->state().canAttachStub(); |
| 1623 | bool handled = false; |
| 1624 | |
| 1625 | // Only bother to try optimizing JSOp::Call with CacheIR if the chain is still |
| 1626 | // allowed to attach stubs. |
| 1627 | if (canAttachStub) { |
| 1628 | HandleValueArray args = HandleValueArray::fromMarkedLocation(argc, vp + 2); |
| 1629 | CallIRGenerator gen(cx, script, pc, op, stub->state(), frame, argc, callee, |
| 1630 | callArgs.thisv(), newTarget, args); |
| 1631 | switch (gen.tryAttachStub()) { |
| 1632 | case AttachDecision::NoAction: |
| 1633 | break; |
| 1634 | case AttachDecision::Attach: { |
| 1635 | ICScript* icScript = frame->icScript(); |
| 1636 | ICAttachResult result = |
| 1637 | AttachBaselineCacheIRStub(cx, gen.writerRef(), gen.cacheKind(), |
| 1638 | script, icScript, stub, gen.stubName()); |
| 1639 | if (result == ICAttachResult::Attached) { |
| 1640 | handled = true; |
| 1641 | JitSpew(JitSpew_BaselineIC, " Attached Call CacheIR stub"); |
| 1642 | } |
| 1643 | } break; |
| 1644 | case AttachDecision::TemporarilyUnoptimizable: |
| 1645 | handled = true; |
| 1646 | break; |
| 1647 | case AttachDecision::Deferred: |
| 1648 | MOZ_CRASH("No deferred Call stubs")do { do { } while (false); MOZ_ReportCrash("" "No deferred Call stubs" , "/var/lib/jenkins/workspace/firefox-scan-build/js/src/jit/BaselineIC.cpp" , 1648); AnnotateMozCrashReason("MOZ_CRASH(" "No deferred Call stubs" ")"); do { *((volatile int*)__null) = 1648; __attribute__((nomerge )) ::abort(); } while (false); } while (false); |
| 1649 | } |
| 1650 | if (!handled) { |
| 1651 | stub->trackNotAttached(); |
| 1652 | } |
| 1653 | } |
| 1654 | |
| 1655 | if (constructing) { |
| 1656 | if (!ConstructFromStack(cx, callArgs)) { |
| 1657 | return false; |
| 1658 | } |
| 1659 | res.set(callArgs.rval()); |
| 1660 | } else if ((op == JSOp::Eval || op == JSOp::StrictEval) && |
| 1661 | cx->global()->valueIsEval(callee)) { |
| 1662 | if (!DirectEval(cx, callArgs.get(0), res)) { |
| 1663 | return false; |
| 1664 | } |
| 1665 | } else { |
| 1666 | MOZ_ASSERT(op == JSOp::Call || op == JSOp::CallContent ||do { static_assert( mozilla::detail::AssertionConditionType< decltype(op == JSOp::Call || op == JSOp::CallContent || op == JSOp::CallIgnoresRv || op == JSOp::CallIter || op == JSOp::CallContentIter || op == JSOp::Eval || op == JSOp::StrictEval)>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(! !(op == JSOp::Call || op == JSOp::CallContent || op == JSOp:: CallIgnoresRv || op == JSOp::CallIter || op == JSOp::CallContentIter || op == JSOp::Eval || op == JSOp::StrictEval))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("op == JSOp::Call || op == JSOp::CallContent || op == JSOp::CallIgnoresRv || op == JSOp::CallIter || op == JSOp::CallContentIter || op == JSOp::Eval || op == JSOp::StrictEval" , "/var/lib/jenkins/workspace/firefox-scan-build/js/src/jit/BaselineIC.cpp" , 1669); AnnotateMozCrashReason("MOZ_ASSERT" "(" "op == JSOp::Call || op == JSOp::CallContent || op == JSOp::CallIgnoresRv || op == JSOp::CallIter || op == JSOp::CallContentIter || op == JSOp::Eval || op == JSOp::StrictEval" ")"); do { *((volatile int*)__null) = 1669; __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 1667 | op == JSOp::CallIgnoresRv || op == JSOp::CallIter ||do { static_assert( mozilla::detail::AssertionConditionType< decltype(op == JSOp::Call || op == JSOp::CallContent || op == JSOp::CallIgnoresRv || op == JSOp::CallIter || op == JSOp::CallContentIter || op == JSOp::Eval || op == JSOp::StrictEval)>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(! !(op == JSOp::Call || op == JSOp::CallContent || op == JSOp:: CallIgnoresRv || op == JSOp::CallIter || op == JSOp::CallContentIter || op == JSOp::Eval || op == JSOp::StrictEval))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("op == JSOp::Call || op == JSOp::CallContent || op == JSOp::CallIgnoresRv || op == JSOp::CallIter || op == JSOp::CallContentIter || op == JSOp::Eval || op == JSOp::StrictEval" , "/var/lib/jenkins/workspace/firefox-scan-build/js/src/jit/BaselineIC.cpp" , 1669); AnnotateMozCrashReason("MOZ_ASSERT" "(" "op == JSOp::Call || op == JSOp::CallContent || op == JSOp::CallIgnoresRv || op == JSOp::CallIter || op == JSOp::CallContentIter || op == JSOp::Eval || op == JSOp::StrictEval" ")"); do { *((volatile int*)__null) = 1669; __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 1668 | op == JSOp::CallContentIter || op == JSOp::Eval ||do { static_assert( mozilla::detail::AssertionConditionType< decltype(op == JSOp::Call || op == JSOp::CallContent || op == JSOp::CallIgnoresRv || op == JSOp::CallIter || op == JSOp::CallContentIter || op == JSOp::Eval || op == JSOp::StrictEval)>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(! !(op == JSOp::Call || op == JSOp::CallContent || op == JSOp:: CallIgnoresRv || op == JSOp::CallIter || op == JSOp::CallContentIter || op == JSOp::Eval || op == JSOp::StrictEval))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("op == JSOp::Call || op == JSOp::CallContent || op == JSOp::CallIgnoresRv || op == JSOp::CallIter || op == JSOp::CallContentIter || op == JSOp::Eval || op == JSOp::StrictEval" , "/var/lib/jenkins/workspace/firefox-scan-build/js/src/jit/BaselineIC.cpp" , 1669); AnnotateMozCrashReason("MOZ_ASSERT" "(" "op == JSOp::Call || op == JSOp::CallContent || op == JSOp::CallIgnoresRv || op == JSOp::CallIter || op == JSOp::CallContentIter || op == JSOp::Eval || op == JSOp::StrictEval" ")"); do { *((volatile int*)__null) = 1669; __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 1669 | op == JSOp::StrictEval)do { static_assert( mozilla::detail::AssertionConditionType< decltype(op == JSOp::Call || op == JSOp::CallContent || op == JSOp::CallIgnoresRv || op == JSOp::CallIter || op == JSOp::CallContentIter || op == JSOp::Eval || op == JSOp::StrictEval)>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(! !(op == JSOp::Call || op == JSOp::CallContent || op == JSOp:: CallIgnoresRv || op == JSOp::CallIter || op == JSOp::CallContentIter || op == JSOp::Eval || op == JSOp::StrictEval))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("op == JSOp::Call || op == JSOp::CallContent || op == JSOp::CallIgnoresRv || op == JSOp::CallIter || op == JSOp::CallContentIter || op == JSOp::Eval || op == JSOp::StrictEval" , "/var/lib/jenkins/workspace/firefox-scan-build/js/src/jit/BaselineIC.cpp" , 1669); AnnotateMozCrashReason("MOZ_ASSERT" "(" "op == JSOp::Call || op == JSOp::CallContent || op == JSOp::CallIgnoresRv || op == JSOp::CallIter || op == JSOp::CallContentIter || op == JSOp::Eval || op == JSOp::StrictEval" ")"); do { *((volatile int*)__null) = 1669; __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 1670 | if ((op == JSOp::CallIter || op == JSOp::CallContentIter) && |
| 1671 | callee.isPrimitive()) { |
| 1672 | MOZ_ASSERT(argc == 0, "thisv must be on top of the stack")do { static_assert( mozilla::detail::AssertionConditionType< decltype(argc == 0)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(argc == 0))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("argc == 0" " (" "thisv must be on top of the stack" ")", "/var/lib/jenkins/workspace/firefox-scan-build/js/src/jit/BaselineIC.cpp" , 1672); AnnotateMozCrashReason("MOZ_ASSERT" "(" "argc == 0" ") (" "thisv must be on top of the stack" ")"); do { *((volatile int *)__null) = 1672; __attribute__((nomerge)) ::abort(); } while (false); } } while (false); |
| 1673 | ReportValueError(cx, JSMSG_NOT_ITERABLE, -1, callArgs.thisv(), nullptr); |
| 1674 | return false; |
| 1675 | } |
| 1676 | |
| 1677 | if (!CallFromStack(cx, callArgs)) { |
| 1678 | return false; |
| 1679 | } |
| 1680 | |
| 1681 | res.set(callArgs.rval()); |
| 1682 | } |
| 1683 | |
| 1684 | return true; |
| 1685 | } |
| 1686 | |
| 1687 | bool DoSpreadCallFallback(JSContext* cx, BaselineFrame* frame, |
| 1688 | ICFallbackStub* stub, Value* vp, |
| 1689 | MutableHandleValue res) { |
| 1690 | stub->incrementEnteredCount(); |
| 1691 | MaybeNotifyWarp(frame->outerScript(), stub); |
| 1692 | |
| 1693 | RootedScript script(cx, frame->script()); |
| 1694 | jsbytecode* pc = StubOffsetToPc(stub, script); |
| 1695 | JSOp op = JSOp(*pc); |
| 1696 | bool constructing = (op == JSOp::SpreadNew || op == JSOp::SpreadSuperCall); |
| 1697 | FallbackICSpew(cx, stub, "SpreadCall(%s)", CodeName(op)); |
| 1698 | |
| 1699 | // Ensure vp array is rooted - we may GC in here. |
| 1700 | RootedExternalValueArray vpRoot(cx, 3 + constructing, vp); |
| 1701 | |
| 1702 | RootedValue callee(cx, vp[0]); |
| 1703 | RootedValue thisv(cx, vp[1]); |
| 1704 | RootedValue arr(cx, vp[2]); |
| 1705 | RootedValue newTarget(cx, constructing ? vp[3] : NullValue()); |
| 1706 | |
| 1707 | // Transition stub state to megamorphic or generic if warranted. |
| 1708 | MaybeTransition(cx, frame, stub); |
| 1709 | |
| 1710 | // Try attaching a call stub. |
| 1711 | bool handled = false; |
| 1712 | if (op != JSOp::SpreadEval && op != JSOp::StrictSpreadEval && |
| 1713 | stub->state().canAttachStub()) { |
| 1714 | // Try CacheIR first: |
| 1715 | Rooted<ArrayObject*> aobj(cx, &arr.toObject().as<ArrayObject>()); |
| 1716 | MOZ_ASSERT(IsPackedArray(aobj))do { static_assert( mozilla::detail::AssertionConditionType< decltype(IsPackedArray(aobj))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(IsPackedArray(aobj)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("IsPackedArray(aobj)" , "/var/lib/jenkins/workspace/firefox-scan-build/js/src/jit/BaselineIC.cpp" , 1716); AnnotateMozCrashReason("MOZ_ASSERT" "(" "IsPackedArray(aobj)" ")"); do { *((volatile int*)__null) = 1716; __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 1717 | |
| 1718 | HandleValueArray args = HandleValueArray::fromMarkedLocation( |
| 1719 | aobj->length(), aobj->getDenseElements()); |
| 1720 | CallIRGenerator gen(cx, script, pc, op, stub->state(), frame, 1, callee, |
| 1721 | thisv, newTarget, args); |
| 1722 | switch (gen.tryAttachStub()) { |
| 1723 | case AttachDecision::NoAction: |
| 1724 | break; |
| 1725 | case AttachDecision::Attach: { |
| 1726 | ICScript* icScript = frame->icScript(); |
| 1727 | ICAttachResult result = |
| 1728 | AttachBaselineCacheIRStub(cx, gen.writerRef(), gen.cacheKind(), |
| 1729 | script, icScript, stub, gen.stubName()); |
| 1730 | |
| 1731 | if (result == ICAttachResult::Attached) { |
| 1732 | handled = true; |
| 1733 | JitSpew(JitSpew_BaselineIC, " Attached Spread Call CacheIR stub"); |
| 1734 | } |
| 1735 | } break; |
| 1736 | case AttachDecision::TemporarilyUnoptimizable: |
| 1737 | handled = true; |
| 1738 | break; |
| 1739 | case AttachDecision::Deferred: |
| 1740 | MOZ_ASSERT_UNREACHABLE("No deferred optimizations for spread calls")do { static_assert( mozilla::detail::AssertionConditionType< decltype(false)>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(!!(false))), 0))) { do { } while ( false); MOZ_ReportAssertionFailure("false" " (" "MOZ_ASSERT_UNREACHABLE: " "No deferred optimizations for spread calls" ")", "/var/lib/jenkins/workspace/firefox-scan-build/js/src/jit/BaselineIC.cpp" , 1740); AnnotateMozCrashReason("MOZ_ASSERT" "(" "false" ") (" "MOZ_ASSERT_UNREACHABLE: " "No deferred optimizations for spread calls" ")"); do { *((volatile int*)__null) = 1740; __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 1741 | break; |
| 1742 | } |
| 1743 | if (!handled) { |
| 1744 | stub->trackNotAttached(); |
| 1745 | } |
| 1746 | } |
| 1747 | |
| 1748 | return SpreadCallOperation(cx, script, pc, thisv, callee, arr, newTarget, |
| 1749 | res); |
| 1750 | } |
| 1751 | |
| 1752 | void FallbackICCodeCompiler::pushCallArguments( |
| 1753 | MacroAssembler& masm, AllocatableGeneralRegisterSet regs, Register argcReg, |
| 1754 | bool isConstructing) { |
| 1755 | MOZ_ASSERT(!regs.has(argcReg))do { static_assert( mozilla::detail::AssertionConditionType< decltype(!regs.has(argcReg))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(!regs.has(argcReg)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!regs.has(argcReg)" , "/var/lib/jenkins/workspace/firefox-scan-build/js/src/jit/BaselineIC.cpp" , 1755); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!regs.has(argcReg)" ")"); do { *((volatile int*)__null) = 1755; __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 1756 | |
| 1757 | // argPtr initially points to the last argument. |
| 1758 | Register argPtr = regs.takeAny(); |
| 1759 | masm.mov(FramePointer, argPtr); |
| 1760 | |
| 1761 | // Skip 3 pointers pushed on top of the arguments: the frame descriptor, |
| 1762 | // return address, and old frame pointer. |
| 1763 | size_t valueOffset = BaselineStubFrameLayout::Size(); |
| 1764 | |
| 1765 | // We have to push |this|, callee, new.target (if constructing) and argc |
| 1766 | // arguments. Handle the number of Values we know statically first. |
| 1767 | |
| 1768 | size_t numNonArgValues = 2 + isConstructing; |
| 1769 | for (size_t i = 0; i < numNonArgValues; i++) { |
| 1770 | masm.pushValue(Address(argPtr, valueOffset)); |
| 1771 | valueOffset += sizeof(Value); |
| 1772 | } |
| 1773 | |
| 1774 | // If there are no arguments we're done. |
| 1775 | Label done; |
| 1776 | masm.branchTest32(Assembler::Zero, argcReg, argcReg, &done); |
| 1777 | |
| 1778 | // Push argc Values. |
| 1779 | Label loop; |
| 1780 | Register count = regs.takeAny(); |
| 1781 | masm.addPtr(Imm32(valueOffset), argPtr); |
| 1782 | masm.move32(argcReg, count); |
| 1783 | masm.bind(&loop); |
| 1784 | { |
| 1785 | masm.pushValue(Address(argPtr, 0)); |
| 1786 | masm.addPtr(Imm32(sizeof(Value)), argPtr); |
| 1787 | |
| 1788 | masm.branchSub32(Assembler::NonZero, Imm32(1), count, &loop); |
| 1789 | } |
| 1790 | masm.bind(&done); |
| 1791 | } |
| 1792 | |
| 1793 | bool FallbackICCodeCompiler::emitCall(bool isSpread, bool isConstructing) { |
| 1794 | static_assert(R0 == JSReturnOperand); |
| 1795 | |
| 1796 | // Values are on the stack left-to-right. Calling convention wants them |
| 1797 | // right-to-left so duplicate them on the stack in reverse order. |
| 1798 | // |this| and callee are pushed last. |
| 1799 | |
| 1800 | AllocatableGeneralRegisterSet regs = BaselineICAvailableGeneralRegs(0); |
| 1801 | |
| 1802 | if (MOZ_UNLIKELY(isSpread)(__builtin_expect(!!(isSpread), 0))) { |
| 1803 | // Push a stub frame so that we can perform a non-tail call. |
| 1804 | enterStubFrame(masm, R1.scratchReg()); |
| 1805 | |
| 1806 | // Use FramePointer instead of StackPointer because it's not affected by |
| 1807 | // the stack pushes below. |
| 1808 | |
| 1809 | // newTarget |
| 1810 | uint32_t valueOffset = BaselineStubFrameLayout::Size(); |
| 1811 | if (isConstructing) { |
| 1812 | masm.pushValue(Address(FramePointer, valueOffset)); |
| 1813 | valueOffset += sizeof(Value); |
| 1814 | } |
| 1815 | |
| 1816 | // array |
| 1817 | masm.pushValue(Address(FramePointer, valueOffset)); |
| 1818 | valueOffset += sizeof(Value); |
| 1819 | |
| 1820 | // this |
| 1821 | masm.pushValue(Address(FramePointer, valueOffset)); |
| 1822 | valueOffset += sizeof(Value); |
| 1823 | |
| 1824 | // callee |
| 1825 | masm.pushValue(Address(FramePointer, valueOffset)); |
| 1826 | valueOffset += sizeof(Value); |
Value stored to 'valueOffset' is never read | |
| 1827 | |
| 1828 | masm.push(masm.getStackPointer()); |
| 1829 | masm.push(ICStubReg); |
| 1830 | |
| 1831 | PushStubPayload(masm, R0.scratchReg()); |
| 1832 | |
| 1833 | using Fn = bool (*)(JSContext*, BaselineFrame*, ICFallbackStub*, Value*, |
| 1834 | MutableHandleValue); |
| 1835 | if (!callVM<Fn, DoSpreadCallFallback>(masm)) { |
| 1836 | return false; |
| 1837 | } |
| 1838 | |
| 1839 | leaveStubFrame(masm); |
| 1840 | EmitReturnFromIC(masm); |
| 1841 | |
| 1842 | // SpreadCall is not yet supported in Ion, so do not generate asmcode for |
| 1843 | // bailout. |
| 1844 | return true; |
| 1845 | } |
| 1846 | |
| 1847 | // Push a stub frame so that we can perform a non-tail call. |
| 1848 | enterStubFrame(masm, R1.scratchReg()); |
| 1849 | |
| 1850 | regs.take(R0.scratchReg()); // argc. |
| 1851 | |
| 1852 | pushCallArguments(masm, regs, R0.scratchReg(), isConstructing); |
| 1853 | |
| 1854 | masm.push(masm.getStackPointer()); |
| 1855 | masm.push(R0.scratchReg()); |
| 1856 | masm.push(ICStubReg); |
| 1857 | |
| 1858 | PushStubPayload(masm, R0.scratchReg()); |
| 1859 | |
| 1860 | using Fn = bool (*)(JSContext*, BaselineFrame*, ICFallbackStub*, uint32_t, |
| 1861 | Value*, MutableHandleValue); |
| 1862 | if (!callVM<Fn, DoCallFallback>(masm)) { |
| 1863 | return false; |
| 1864 | } |
| 1865 | |
| 1866 | leaveStubFrame(masm); |
| 1867 | EmitReturnFromIC(masm); |
| 1868 | |
| 1869 | // This is the resume point used when bailout rewrites call stack to undo |
| 1870 | // Ion inlined frames. The return address pushed onto reconstructed stack |
| 1871 | // will point here. |
| 1872 | assumeStubFrame(); |
| 1873 | |
| 1874 | MOZ_ASSERT(!isSpread)do { static_assert( mozilla::detail::AssertionConditionType< decltype(!isSpread)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(!isSpread))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!isSpread", "/var/lib/jenkins/workspace/firefox-scan-build/js/src/jit/BaselineIC.cpp" , 1874); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!isSpread" ")" ); do { *((volatile int*)__null) = 1874; __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 1875 | |
| 1876 | if (isConstructing) { |
| 1877 | code.initBailoutReturnOffset(BailoutReturnKind::New, masm.currentOffset()); |
| 1878 | } else { |
| 1879 | code.initBailoutReturnOffset(BailoutReturnKind::Call, masm.currentOffset()); |
| 1880 | } |
| 1881 | |
| 1882 | // Load passed-in ThisV into R1 just in case it's needed. Need to do this |
| 1883 | // before we leave the stub frame since that info will be lost. |
| 1884 | // Current stack: [...., ThisV, CalleeToken, Descriptor ] |
| 1885 | size_t thisvOffset = |
| 1886 | JitFrameLayout::offsetOfThis() - JitFrameLayout::bytesPoppedAfterCall(); |
| 1887 | masm.loadValue(Address(masm.getStackPointer(), thisvOffset), R1); |
| 1888 | |
| 1889 | leaveStubFrame(masm); |
| 1890 | |
| 1891 | // If this is a |constructing| call, if the callee returns a non-object, we |
| 1892 | // replace it with the |this| object passed in. |
| 1893 | if (isConstructing) { |
| 1894 | static_assert(JSReturnOperand == R0); |
| 1895 | Label skipThisReplace; |
| 1896 | |
| 1897 | masm.branchTestObject(Assembler::Equal, JSReturnOperand, &skipThisReplace); |
| 1898 | masm.moveValue(R1, R0); |
| 1899 | #ifdef DEBUG1 |
| 1900 | masm.branchTestObject(Assembler::Equal, JSReturnOperand, &skipThisReplace); |
| 1901 | masm.assumeUnreachable("Failed to return object in constructing call."); |
| 1902 | #endif |
| 1903 | masm.bind(&skipThisReplace); |
| 1904 | } |
| 1905 | |
| 1906 | EmitReturnFromIC(masm); |
| 1907 | return true; |
| 1908 | } |
| 1909 | |
| 1910 | bool FallbackICCodeCompiler::emit_Call() { |
| 1911 | return emitCall(/* isSpread = */ false, /* isConstructing = */ false); |
| 1912 | } |
| 1913 | |
| 1914 | bool FallbackICCodeCompiler::emit_CallConstructing() { |
| 1915 | return emitCall(/* isSpread = */ false, /* isConstructing = */ true); |
| 1916 | } |
| 1917 | |
| 1918 | bool FallbackICCodeCompiler::emit_SpreadCall() { |
| 1919 | return emitCall(/* isSpread = */ true, /* isConstructing = */ false); |
| 1920 | } |
| 1921 | |
| 1922 | bool FallbackICCodeCompiler::emit_SpreadCallConstructing() { |
| 1923 | return emitCall(/* isSpread = */ true, /* isConstructing = */ true); |
| 1924 | } |
| 1925 | |
| 1926 | // |
| 1927 | // GetIterator_Fallback |
| 1928 | // |
| 1929 | |
| 1930 | bool DoGetIteratorFallback(JSContext* cx, BaselineFrame* frame, |
| 1931 | ICFallbackStub* stub, HandleValue value, |
| 1932 | MutableHandleValue res) { |
| 1933 | stub->incrementEnteredCount(); |
| 1934 | MaybeNotifyWarp(frame->outerScript(), stub); |
| 1935 | FallbackICSpew(cx, stub, "GetIterator"); |
| 1936 | |
| 1937 | TryAttachStub<GetIteratorIRGenerator>("GetIterator", cx, frame, stub, value); |
| 1938 | |
| 1939 | PropertyIteratorObject* iterObj = ValueToIterator(cx, value); |
| 1940 | if (!iterObj) { |
| 1941 | return false; |
| 1942 | } |
| 1943 | |
| 1944 | res.setObject(*iterObj); |
| 1945 | return true; |
| 1946 | } |
| 1947 | |
| 1948 | bool FallbackICCodeCompiler::emit_GetIterator() { |
| 1949 | EmitRestoreTailCallReg(masm); |
| 1950 | |
| 1951 | // Sync stack for the decompiler. |
| 1952 | masm.pushValue(R0); |
| 1953 | |
| 1954 | masm.pushValue(R0); |
| 1955 | masm.push(ICStubReg); |
| 1956 | pushStubPayload(masm, R0.scratchReg()); |
| 1957 | |
| 1958 | using Fn = bool (*)(JSContext*, BaselineFrame*, ICFallbackStub*, HandleValue, |
| 1959 | MutableHandleValue); |
| 1960 | return tailCallVM<Fn, DoGetIteratorFallback>(masm); |
| 1961 | } |
| 1962 | |
| 1963 | // |
| 1964 | // OptimizeSpreadCall_Fallback |
| 1965 | // |
| 1966 | |
| 1967 | bool DoOptimizeSpreadCallFallback(JSContext* cx, BaselineFrame* frame, |
| 1968 | ICFallbackStub* stub, HandleValue value, |
| 1969 | MutableHandleValue res) { |
| 1970 | stub->incrementEnteredCount(); |
| 1971 | MaybeNotifyWarp(frame->outerScript(), stub); |
| 1972 | FallbackICSpew(cx, stub, "OptimizeSpreadCall"); |
| 1973 | |
| 1974 | TryAttachStub<OptimizeSpreadCallIRGenerator>("OptimizeSpreadCall", cx, frame, |
| 1975 | stub, value); |
| 1976 | |
| 1977 | return OptimizeSpreadCall(cx, value, res); |
| 1978 | } |
| 1979 | |
| 1980 | bool FallbackICCodeCompiler::emit_OptimizeSpreadCall() { |
| 1981 | EmitRestoreTailCallReg(masm); |
| 1982 | |
| 1983 | masm.pushValue(R0); |
| 1984 | masm.push(ICStubReg); |
| 1985 | pushStubPayload(masm, R0.scratchReg()); |
| 1986 | |
| 1987 | using Fn = bool (*)(JSContext*, BaselineFrame*, ICFallbackStub*, HandleValue, |
| 1988 | MutableHandleValue); |
| 1989 | return tailCallVM<Fn, DoOptimizeSpreadCallFallback>(masm); |
| 1990 | } |
| 1991 | |
| 1992 | // |
| 1993 | // InstanceOf_Fallback |
| 1994 | // |
| 1995 | |
| 1996 | bool DoInstanceOfFallback(JSContext* cx, BaselineFrame* frame, |
| 1997 | ICFallbackStub* stub, HandleValue lhs, |
| 1998 | HandleValue rhs, MutableHandleValue res) { |
| 1999 | stub->incrementEnteredCount(); |
| 2000 | MaybeNotifyWarp(frame->outerScript(), stub); |
| 2001 | FallbackICSpew(cx, stub, "InstanceOf"); |
| 2002 | |
| 2003 | if (!rhs.isObject()) { |
| 2004 | ReportValueError(cx, JSMSG_BAD_INSTANCEOF_RHS, -1, rhs, nullptr); |
| 2005 | return false; |
| 2006 | } |
| 2007 | |
| 2008 | RootedObject obj(cx, &rhs.toObject()); |
| 2009 | bool cond = false; |
| 2010 | if (!InstanceofOperator(cx, obj, lhs, &cond)) { |
| 2011 | return false; |
| 2012 | } |
| 2013 | |
| 2014 | res.setBoolean(cond); |
| 2015 | |
| 2016 | if (!obj->is<JSFunction>()) { |
| 2017 | // ensure we've recorded at least one failure, so we can detect there was a |
| 2018 | // non-optimizable case |
| 2019 | if (!stub->state().hasFailures()) { |
| 2020 | stub->trackNotAttached(); |
| 2021 | } |
| 2022 | return true; |
| 2023 | } |
| 2024 | |
| 2025 | TryAttachStub<InstanceOfIRGenerator>("InstanceOf", cx, frame, stub, lhs, obj); |
| 2026 | return true; |
| 2027 | } |
| 2028 | |
| 2029 | bool FallbackICCodeCompiler::emit_InstanceOf() { |
| 2030 | EmitRestoreTailCallReg(masm); |
| 2031 | |
| 2032 | // Sync stack for the decompiler. |
| 2033 | masm.pushValue(R0); |
| 2034 | masm.pushValue(R1); |
| 2035 | |
| 2036 | masm.pushValue(R1); |
| 2037 | masm.pushValue(R0); |
| 2038 | masm.push(ICStubReg); |
| 2039 | pushStubPayload(masm, R0.scratchReg()); |
| 2040 | |
| 2041 | using Fn = bool (*)(JSContext*, BaselineFrame*, ICFallbackStub*, HandleValue, |
| 2042 | HandleValue, MutableHandleValue); |
| 2043 | return tailCallVM<Fn, DoInstanceOfFallback>(masm); |
| 2044 | } |
| 2045 | |
| 2046 | // |
| 2047 | // TypeOf_Fallback |
| 2048 | // |
| 2049 | |
| 2050 | bool DoTypeOfFallback(JSContext* cx, BaselineFrame* frame, ICFallbackStub* stub, |
| 2051 | HandleValue val, MutableHandleValue res) { |
| 2052 | stub->incrementEnteredCount(); |
| 2053 | MaybeNotifyWarp(frame->outerScript(), stub); |
| 2054 | FallbackICSpew(cx, stub, "TypeOf"); |
| 2055 | |
| 2056 | TryAttachStub<TypeOfIRGenerator>("TypeOf", cx, frame, stub, val); |
| 2057 | |
| 2058 | JSType type = js::TypeOfValue(val); |
| 2059 | RootedString string(cx, TypeName(type, cx->names())); |
| 2060 | res.setString(string); |
| 2061 | return true; |
| 2062 | } |
| 2063 | |
| 2064 | bool FallbackICCodeCompiler::emit_TypeOf() { |
| 2065 | EmitRestoreTailCallReg(masm); |
| 2066 | |
| 2067 | masm.pushValue(R0); |
| 2068 | masm.push(ICStubReg); |
| 2069 | pushStubPayload(masm, R0.scratchReg()); |
| 2070 | |
| 2071 | using Fn = bool (*)(JSContext*, BaselineFrame*, ICFallbackStub*, HandleValue, |
| 2072 | MutableHandleValue); |
| 2073 | return tailCallVM<Fn, DoTypeOfFallback>(masm); |
| 2074 | } |
| 2075 | |
| 2076 | // |
| 2077 | // TypeOfEq_Fallback |
| 2078 | // |
| 2079 | |
| 2080 | bool DoTypeOfEqFallback(JSContext* cx, BaselineFrame* frame, |
| 2081 | ICFallbackStub* stub, HandleValue val, |
| 2082 | MutableHandleValue res) { |
| 2083 | stub->incrementEnteredCount(); |
| 2084 | MaybeNotifyWarp(frame->outerScript(), stub); |
| 2085 | FallbackICSpew(cx, stub, "TypeOfEq"); |
| 2086 | |
| 2087 | jsbytecode* pc = StubOffsetToPc(stub, frame->script()); |
| 2088 | auto operand = TypeofEqOperand::fromRawValue(GET_UINT8(pc)); |
| 2089 | JSType type = operand.type(); |
| 2090 | JSOp compareOp = operand.compareOp(); |
| 2091 | |
| 2092 | TryAttachStub<TypeOfEqIRGenerator>("TypeOfEq", cx, frame, stub, val, type, |
| 2093 | compareOp); |
| 2094 | |
| 2095 | bool result = js::TypeOfValue(val) == type; |
| 2096 | if (compareOp == JSOp::Ne) { |
| 2097 | result = !result; |
| 2098 | } |
| 2099 | res.setBoolean(result); |
| 2100 | return true; |
| 2101 | } |
| 2102 | |
| 2103 | bool FallbackICCodeCompiler::emit_TypeOfEq() { |
| 2104 | EmitRestoreTailCallReg(masm); |
| 2105 | |
| 2106 | masm.pushValue(R0); |
| 2107 | masm.push(ICStubReg); |
| 2108 | pushStubPayload(masm, R0.scratchReg()); |
| 2109 | |
| 2110 | using Fn = bool (*)(JSContext*, BaselineFrame*, ICFallbackStub*, HandleValue, |
| 2111 | MutableHandleValue); |
| 2112 | return tailCallVM<Fn, DoTypeOfEqFallback>(masm); |
| 2113 | } |
| 2114 | |
| 2115 | // |
| 2116 | // ToPropertyKey_Fallback |
| 2117 | // |
| 2118 | |
| 2119 | bool DoToPropertyKeyFallback(JSContext* cx, BaselineFrame* frame, |
| 2120 | ICFallbackStub* stub, HandleValue val, |
| 2121 | MutableHandleValue res) { |
| 2122 | stub->incrementEnteredCount(); |
| 2123 | MaybeNotifyWarp(frame->outerScript(), stub); |
| 2124 | FallbackICSpew(cx, stub, "ToPropertyKey"); |
| 2125 | |
| 2126 | TryAttachStub<ToPropertyKeyIRGenerator>("ToPropertyKey", cx, frame, stub, |
| 2127 | val); |
| 2128 | |
| 2129 | return ToPropertyKeyOperation(cx, val, res); |
| 2130 | } |
| 2131 | |
| 2132 | bool FallbackICCodeCompiler::emit_ToPropertyKey() { |
| 2133 | EmitRestoreTailCallReg(masm); |
| 2134 | |
| 2135 | masm.pushValue(R0); |
| 2136 | masm.push(ICStubReg); |
| 2137 | pushStubPayload(masm, R0.scratchReg()); |
| 2138 | |
| 2139 | using Fn = bool (*)(JSContext*, BaselineFrame*, ICFallbackStub*, HandleValue, |
| 2140 | MutableHandleValue); |
| 2141 | return tailCallVM<Fn, DoToPropertyKeyFallback>(masm); |
| 2142 | } |
| 2143 | |
| 2144 | // |
| 2145 | // Rest_Fallback |
| 2146 | // |
| 2147 | |
| 2148 | bool DoRestFallback(JSContext* cx, BaselineFrame* frame, ICFallbackStub* stub, |
| 2149 | MutableHandleValue res) { |
| 2150 | unsigned numFormals = frame->numFormalArgs() - 1; |
| 2151 | unsigned numActuals = frame->numActualArgs(); |
| 2152 | unsigned numRest = numActuals > numFormals ? numActuals - numFormals : 0; |
| 2153 | Value* rest = frame->argv() + numFormals; |
| 2154 | |
| 2155 | ArrayObject* obj = NewDenseCopiedArray(cx, numRest, rest); |
| 2156 | if (!obj) { |
| 2157 | return false; |
| 2158 | } |
| 2159 | res.setObject(*obj); |
| 2160 | return true; |
| 2161 | } |
| 2162 | |
| 2163 | bool FallbackICCodeCompiler::emit_Rest() { |
| 2164 | EmitRestoreTailCallReg(masm); |
| 2165 | |
| 2166 | masm.push(ICStubReg); |
| 2167 | pushStubPayload(masm, R0.scratchReg()); |
| 2168 | |
| 2169 | using Fn = |
| 2170 | bool (*)(JSContext*, BaselineFrame*, ICFallbackStub*, MutableHandleValue); |
| 2171 | return tailCallVM<Fn, DoRestFallback>(masm); |
| 2172 | } |
| 2173 | |
| 2174 | // |
| 2175 | // UnaryArith_Fallback |
| 2176 | // |
| 2177 | |
| 2178 | bool DoUnaryArithFallback(JSContext* cx, BaselineFrame* frame, |
| 2179 | ICFallbackStub* stub, HandleValue val, |
| 2180 | MutableHandleValue res) { |
| 2181 | stub->incrementEnteredCount(); |
| 2182 | MaybeNotifyWarp(frame->outerScript(), stub); |
| 2183 | |
| 2184 | jsbytecode* pc = StubOffsetToPc(stub, frame->script()); |
| 2185 | JSOp op = JSOp(*pc); |
| 2186 | FallbackICSpew(cx, stub, "UnaryArith(%s)", CodeName(op)); |
| 2187 | |
| 2188 | switch (op) { |
| 2189 | case JSOp::BitNot: { |
| 2190 | res.set(val); |
| 2191 | if (!BitNot(cx, res, res)) { |
| 2192 | return false; |
| 2193 | } |
| 2194 | break; |
| 2195 | } |
| 2196 | case JSOp::Pos: { |
| 2197 | res.set(val); |
| 2198 | if (!ToNumber(cx, res)) { |
| 2199 | return false; |
| 2200 | } |
| 2201 | break; |
| 2202 | } |
| 2203 | case JSOp::Neg: { |
| 2204 | res.set(val); |
| 2205 | if (!NegOperation(cx, res, res)) { |
| 2206 | return false; |
| 2207 | } |
| 2208 | break; |
| 2209 | } |
| 2210 | case JSOp::Inc: { |
| 2211 | if (!IncOperation(cx, val, res)) { |
| 2212 | return false; |
| 2213 | } |
| 2214 | break; |
| 2215 | } |
| 2216 | case JSOp::Dec: { |
| 2217 | if (!DecOperation(cx, val, res)) { |
| 2218 | return false; |
| 2219 | } |
| 2220 | break; |
| 2221 | } |
| 2222 | case JSOp::ToNumeric: { |
| 2223 | res.set(val); |
| 2224 | if (!ToNumeric(cx, res)) { |
| 2225 | return false; |
| 2226 | } |
| 2227 | break; |
| 2228 | } |
| 2229 | default: |
| 2230 | MOZ_CRASH("Unexpected op")do { do { } while (false); MOZ_ReportCrash("" "Unexpected op" , "/var/lib/jenkins/workspace/firefox-scan-build/js/src/jit/BaselineIC.cpp" , 2230); AnnotateMozCrashReason("MOZ_CRASH(" "Unexpected op" ")" ); do { *((volatile int*)__null) = 2230; __attribute__((nomerge )) ::abort(); } while (false); } while (false); |
| 2231 | } |
| 2232 | MOZ_ASSERT(res.isNumeric())do { static_assert( mozilla::detail::AssertionConditionType< decltype(res.isNumeric())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(res.isNumeric()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("res.isNumeric()" , "/var/lib/jenkins/workspace/firefox-scan-build/js/src/jit/BaselineIC.cpp" , 2232); AnnotateMozCrashReason("MOZ_ASSERT" "(" "res.isNumeric()" ")"); do { *((volatile int*)__null) = 2232; __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 2233 | |
| 2234 | TryAttachStub<UnaryArithIRGenerator>("UnaryArith", cx, frame, stub, op, val, |
| 2235 | res); |
| 2236 | return true; |
| 2237 | } |
| 2238 | |
| 2239 | bool FallbackICCodeCompiler::emit_UnaryArith() { |
| 2240 | static_assert(R0 == JSReturnOperand); |
| 2241 | |
| 2242 | // Restore the tail call register. |
| 2243 | EmitRestoreTailCallReg(masm); |
| 2244 | |
| 2245 | // Ensure stack is fully synced for the expression decompiler. |
| 2246 | masm.pushValue(R0); |
| 2247 | |
| 2248 | // Push arguments. |
| 2249 | masm.pushValue(R0); |
| 2250 | masm.push(ICStubReg); |
| 2251 | pushStubPayload(masm, R0.scratchReg()); |
| 2252 | |
| 2253 | using Fn = bool (*)(JSContext*, BaselineFrame*, ICFallbackStub*, HandleValue, |
| 2254 | MutableHandleValue); |
| 2255 | return tailCallVM<Fn, DoUnaryArithFallback>(masm); |
| 2256 | } |
| 2257 | |
| 2258 | // |
| 2259 | // BinaryArith_Fallback |
| 2260 | // |
| 2261 | |
| 2262 | bool DoBinaryArithFallback(JSContext* cx, BaselineFrame* frame, |
| 2263 | ICFallbackStub* stub, HandleValue lhs, |
| 2264 | HandleValue rhs, MutableHandleValue ret) { |
| 2265 | stub->incrementEnteredCount(); |
| 2266 | MaybeNotifyWarp(frame->outerScript(), stub); |
| 2267 | |
| 2268 | jsbytecode* pc = StubOffsetToPc(stub, frame->script()); |
| 2269 | JSOp op = JSOp(*pc); |
| 2270 | FallbackICSpew( |
| 2271 | cx, stub, "CacheIRBinaryArith(%s,%d,%d)", CodeName(op), |
| 2272 | int(lhs.isDouble() ? JSVAL_TYPE_DOUBLE : lhs.extractNonDoubleType()), |
| 2273 | int(rhs.isDouble() ? JSVAL_TYPE_DOUBLE : rhs.extractNonDoubleType())); |
| 2274 | |
| 2275 | // Don't pass lhs/rhs directly, we need the original values when |
| 2276 | // generating stubs. |
| 2277 | RootedValue lhsCopy(cx, lhs); |
| 2278 | RootedValue rhsCopy(cx, rhs); |
| 2279 | |
| 2280 | // Perform the arith operation. |
| 2281 | switch (op) { |
| 2282 | case JSOp::Add: |
| 2283 | // Do an add. |
| 2284 | if (!AddValues(cx, &lhsCopy, &rhsCopy, ret)) { |
| 2285 | return false; |
| 2286 | } |
| 2287 | break; |
| 2288 | case JSOp::Sub: |
| 2289 | if (!SubValues(cx, &lhsCopy, &rhsCopy, ret)) { |
| 2290 | return false; |
| 2291 | } |
| 2292 | break; |
| 2293 | case JSOp::Mul: |
| 2294 | if (!MulValues(cx, &lhsCopy, &rhsCopy, ret)) { |
| 2295 | return false; |
| 2296 | } |
| 2297 | break; |
| 2298 | case JSOp::Div: |
| 2299 | if (!DivValues(cx, &lhsCopy, &rhsCopy, ret)) { |
| 2300 | return false; |
| 2301 | } |
| 2302 | break; |
| 2303 | case JSOp::Mod: |
| 2304 | if (!ModValues(cx, &lhsCopy, &rhsCopy, ret)) { |
| 2305 | return false; |
| 2306 | } |
| 2307 | break; |
| 2308 | case JSOp::Pow: |
| 2309 | if (!PowValues(cx, &lhsCopy, &rhsCopy, ret)) { |
| 2310 | return false; |
| 2311 | } |
| 2312 | break; |
| 2313 | case JSOp::BitOr: { |
| 2314 | if (!BitOr(cx, &lhsCopy, &rhsCopy, ret)) { |
| 2315 | return false; |
| 2316 | } |
| 2317 | break; |
| 2318 | } |
| 2319 | case JSOp::BitXor: { |
| 2320 | if (!BitXor(cx, &lhsCopy, &rhsCopy, ret)) { |
| 2321 | return false; |
| 2322 | } |
| 2323 | break; |
| 2324 | } |
| 2325 | case JSOp::BitAnd: { |
| 2326 | if (!BitAnd(cx, &lhsCopy, &rhsCopy, ret)) { |
| 2327 | return false; |
| 2328 | } |
| 2329 | break; |
| 2330 | } |
| 2331 | case JSOp::Lsh: { |
| 2332 | if (!BitLsh(cx, &lhsCopy, &rhsCopy, ret)) { |
| 2333 | return false; |
| 2334 | } |
| 2335 | break; |
| 2336 | } |
| 2337 | case JSOp::Rsh: { |
| 2338 | if (!BitRsh(cx, &lhsCopy, &rhsCopy, ret)) { |
| 2339 | return false; |
| 2340 | } |
| 2341 | break; |
| 2342 | } |
| 2343 | case JSOp::Ursh: { |
| 2344 | if (!UrshValues(cx, &lhsCopy, &rhsCopy, ret)) { |
| 2345 | return false; |
| 2346 | } |
| 2347 | break; |
| 2348 | } |
| 2349 | default: |
| 2350 | MOZ_CRASH("Unhandled baseline arith op")do { do { } while (false); MOZ_ReportCrash("" "Unhandled baseline arith op" , "/var/lib/jenkins/workspace/firefox-scan-build/js/src/jit/BaselineIC.cpp" , 2350); AnnotateMozCrashReason("MOZ_CRASH(" "Unhandled baseline arith op" ")"); do { *((volatile int*)__null) = 2350; __attribute__((nomerge )) ::abort(); } while (false); } while (false); |
| 2351 | } |
| 2352 | |
| 2353 | TryAttachStub<BinaryArithIRGenerator>("BinaryArith", cx, frame, stub, op, lhs, |
| 2354 | rhs, ret); |
| 2355 | return true; |
| 2356 | } |
| 2357 | |
| 2358 | bool FallbackICCodeCompiler::emit_BinaryArith() { |
| 2359 | static_assert(R0 == JSReturnOperand); |
| 2360 | |
| 2361 | // Restore the tail call register. |
| 2362 | EmitRestoreTailCallReg(masm); |
| 2363 | |
| 2364 | // Ensure stack is fully synced for the expression decompiler. |
| 2365 | masm.pushValue(R0); |
| 2366 | masm.pushValue(R1); |
| 2367 | |
| 2368 | // Push arguments. |
| 2369 | masm.pushValue(R1); |
| 2370 | masm.pushValue(R0); |
| 2371 | masm.push(ICStubReg); |
| 2372 | pushStubPayload(masm, R0.scratchReg()); |
| 2373 | |
| 2374 | using Fn = bool (*)(JSContext*, BaselineFrame*, ICFallbackStub*, HandleValue, |
| 2375 | HandleValue, MutableHandleValue); |
| 2376 | return tailCallVM<Fn, DoBinaryArithFallback>(masm); |
| 2377 | } |
| 2378 | |
| 2379 | // |
| 2380 | // Compare_Fallback |
| 2381 | // |
| 2382 | bool DoCompareFallback(JSContext* cx, BaselineFrame* frame, |
| 2383 | ICFallbackStub* stub, HandleValue lhs, HandleValue rhs, |
| 2384 | MutableHandleValue ret) { |
| 2385 | stub->incrementEnteredCount(); |
| 2386 | MaybeNotifyWarp(frame->outerScript(), stub); |
| 2387 | |
| 2388 | jsbytecode* pc = StubOffsetToPc(stub, frame->script()); |
| 2389 | JSOp op = JSOp(*pc); |
| 2390 | |
| 2391 | FallbackICSpew(cx, stub, "Compare(%s)", CodeName(op)); |
| 2392 | |
| 2393 | // Don't pass lhs/rhs directly, we need the original values when |
| 2394 | // generating stubs. |
| 2395 | RootedValue lhsCopy(cx, lhs); |
| 2396 | RootedValue rhsCopy(cx, rhs); |
| 2397 | |
| 2398 | // Perform the compare operation. |
| 2399 | bool out; |
| 2400 | switch (op) { |
| 2401 | case JSOp::Lt: |
| 2402 | if (!LessThan(cx, &lhsCopy, &rhsCopy, &out)) { |
| 2403 | return false; |
| 2404 | } |
| 2405 | break; |
| 2406 | case JSOp::Le: |
| 2407 | if (!LessThanOrEqual(cx, &lhsCopy, &rhsCopy, &out)) { |
| 2408 | return false; |
| 2409 | } |
| 2410 | break; |
| 2411 | case JSOp::Gt: |
| 2412 | if (!GreaterThan(cx, &lhsCopy, &rhsCopy, &out)) { |
| 2413 | return false; |
| 2414 | } |
| 2415 | break; |
| 2416 | case JSOp::Ge: |
| 2417 | if (!GreaterThanOrEqual(cx, &lhsCopy, &rhsCopy, &out)) { |
| 2418 | return false; |
| 2419 | } |
| 2420 | break; |
| 2421 | case JSOp::Eq: |
| 2422 | if (!js::LooselyEqual(cx, lhsCopy, rhsCopy, &out)) { |
| 2423 | return false; |
| 2424 | } |
| 2425 | break; |
| 2426 | case JSOp::Ne: |
| 2427 | if (!js::LooselyEqual(cx, lhsCopy, rhsCopy, &out)) { |
| 2428 | return false; |
| 2429 | } |
| 2430 | out = !out; |
| 2431 | break; |
| 2432 | case JSOp::StrictEq: |
| 2433 | if (!js::StrictlyEqual(cx, lhsCopy, rhsCopy, &out)) { |
| 2434 | return false; |
| 2435 | } |
| 2436 | break; |
| 2437 | case JSOp::StrictNe: |
| 2438 | if (!js::StrictlyEqual(cx, lhsCopy, rhsCopy, &out)) { |
| 2439 | return false; |
| 2440 | } |
| 2441 | out = !out; |
| 2442 | break; |
| 2443 | default: |
| 2444 | MOZ_ASSERT_UNREACHABLE("Unhandled baseline compare op")do { static_assert( mozilla::detail::AssertionConditionType< decltype(false)>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(!!(false))), 0))) { do { } while ( false); MOZ_ReportAssertionFailure("false" " (" "MOZ_ASSERT_UNREACHABLE: " "Unhandled baseline compare op" ")", "/var/lib/jenkins/workspace/firefox-scan-build/js/src/jit/BaselineIC.cpp" , 2444); AnnotateMozCrashReason("MOZ_ASSERT" "(" "false" ") (" "MOZ_ASSERT_UNREACHABLE: " "Unhandled baseline compare op" ")" ); do { *((volatile int*)__null) = 2444; __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 2445 | return false; |
| 2446 | } |
| 2447 | |
| 2448 | ret.setBoolean(out); |
| 2449 | |
| 2450 | TryAttachStub<CompareIRGenerator>("Compare", cx, frame, stub, op, lhs, rhs); |
| 2451 | return true; |
| 2452 | } |
| 2453 | |
| 2454 | bool FallbackICCodeCompiler::emit_Compare() { |
| 2455 | static_assert(R0 == JSReturnOperand); |
| 2456 | |
| 2457 | // Restore the tail call register. |
| 2458 | EmitRestoreTailCallReg(masm); |
| 2459 | |
| 2460 | // Ensure stack is fully synced for the expression decompiler. |
| 2461 | masm.pushValue(R0); |
| 2462 | masm.pushValue(R1); |
| 2463 | |
| 2464 | // Push arguments. |
| 2465 | masm.pushValue(R1); |
| 2466 | masm.pushValue(R0); |
| 2467 | masm.push(ICStubReg); |
| 2468 | pushStubPayload(masm, R0.scratchReg()); |
| 2469 | |
| 2470 | using Fn = bool (*)(JSContext*, BaselineFrame*, ICFallbackStub*, HandleValue, |
| 2471 | HandleValue, MutableHandleValue); |
| 2472 | return tailCallVM<Fn, DoCompareFallback>(masm); |
| 2473 | } |
| 2474 | |
| 2475 | // |
| 2476 | // NewArray_Fallback |
| 2477 | // |
| 2478 | |
| 2479 | bool DoNewArrayFallback(JSContext* cx, BaselineFrame* frame, |
| 2480 | ICFallbackStub* stub, MutableHandleValue res) { |
| 2481 | stub->incrementEnteredCount(); |
| 2482 | MaybeNotifyWarp(frame->outerScript(), stub); |
| 2483 | FallbackICSpew(cx, stub, "NewArray"); |
| 2484 | |
| 2485 | jsbytecode* pc = StubOffsetToPc(stub, frame->script()); |
| 2486 | |
| 2487 | uint32_t length = GET_UINT32(pc); |
| 2488 | MOZ_ASSERT(length <= INT32_MAX,do { static_assert( mozilla::detail::AssertionConditionType< decltype(length <= (2147483647))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(length <= (2147483647)))) , 0))) { do { } while (false); MOZ_ReportAssertionFailure("length <= (2147483647)" " (" "the bytecode emitter must fail to compile code that would " "produce a length exceeding int32_t range" ")", "/var/lib/jenkins/workspace/firefox-scan-build/js/src/jit/BaselineIC.cpp" , 2490); AnnotateMozCrashReason("MOZ_ASSERT" "(" "length <= (2147483647)" ") (" "the bytecode emitter must fail to compile code that would " "produce a length exceeding int32_t range" ")"); do { *((volatile int*)__null) = 2490; __attribute__((nomerge)) ::abort(); } while (false); } } while (false) |
| 2489 | "the bytecode emitter must fail to compile code that would "do { static_assert( mozilla::detail::AssertionConditionType< decltype(length <= (2147483647))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(length <= (2147483647)))) , 0))) { do { } while (false); MOZ_ReportAssertionFailure("length <= (2147483647)" " (" "the bytecode emitter must fail to compile code that would " "produce a length exceeding int32_t range" ")", "/var/lib/jenkins/workspace/firefox-scan-build/js/src/jit/BaselineIC.cpp" , 2490); AnnotateMozCrashReason("MOZ_ASSERT" "(" "length <= (2147483647)" ") (" "the bytecode emitter must fail to compile code that would " "produce a length exceeding int32_t range" ")"); do { *((volatile int*)__null) = 2490; __attribute__((nomerge)) ::abort(); } while (false); } } while (false) |
| 2490 | "produce a length exceeding int32_t range")do { static_assert( mozilla::detail::AssertionConditionType< decltype(length <= (2147483647))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(length <= (2147483647)))) , 0))) { do { } while (false); MOZ_ReportAssertionFailure("length <= (2147483647)" " (" "the bytecode emitter must fail to compile code that would " "produce a length exceeding int32_t range" ")", "/var/lib/jenkins/workspace/firefox-scan-build/js/src/jit/BaselineIC.cpp" , 2490); AnnotateMozCrashReason("MOZ_ASSERT" "(" "length <= (2147483647)" ") (" "the bytecode emitter must fail to compile code that would " "produce a length exceeding int32_t range" ")"); do { *((volatile int*)__null) = 2490; __attribute__((nomerge)) ::abort(); } while (false); } } while (false); |
| 2491 | |
| 2492 | Rooted<ArrayObject*> array(cx, NewArrayOperation(cx, length)); |
| 2493 | if (!array) { |
| 2494 | return false; |
| 2495 | } |
| 2496 | |
| 2497 | TryAttachStub<NewArrayIRGenerator>("NewArray", cx, frame, stub, JSOp(*pc), |
| 2498 | array, frame); |
| 2499 | |
| 2500 | res.setObject(*array); |
| 2501 | return true; |
| 2502 | } |
| 2503 | |
| 2504 | bool FallbackICCodeCompiler::emit_NewArray() { |
| 2505 | EmitRestoreTailCallReg(masm); |
| 2506 | |
| 2507 | masm.push(ICStubReg); // stub. |
| 2508 | masm.pushBaselineFramePtr(FramePointer, R0.scratchReg()); |
| 2509 | |
| 2510 | using Fn = |
| 2511 | bool (*)(JSContext*, BaselineFrame*, ICFallbackStub*, MutableHandleValue); |
| 2512 | return tailCallVM<Fn, DoNewArrayFallback>(masm); |
| 2513 | } |
| 2514 | |
| 2515 | // |
| 2516 | // NewObject_Fallback |
| 2517 | // |
| 2518 | bool DoNewObjectFallback(JSContext* cx, BaselineFrame* frame, |
| 2519 | ICFallbackStub* stub, MutableHandleValue res) { |
| 2520 | stub->incrementEnteredCount(); |
| 2521 | MaybeNotifyWarp(frame->outerScript(), stub); |
| 2522 | FallbackICSpew(cx, stub, "NewObject"); |
| 2523 | |
| 2524 | RootedScript script(cx, frame->script()); |
| 2525 | jsbytecode* pc = StubOffsetToPc(stub, script); |
| 2526 | |
| 2527 | RootedObject obj(cx, NewObjectOperation(cx, script, pc)); |
| 2528 | if (!obj) { |
| 2529 | return false; |
| 2530 | } |
| 2531 | |
| 2532 | TryAttachStub<NewObjectIRGenerator>("NewObject", cx, frame, stub, JSOp(*pc), |
| 2533 | obj, frame); |
| 2534 | |
| 2535 | res.setObject(*obj); |
| 2536 | return true; |
| 2537 | } |
| 2538 | |
| 2539 | bool FallbackICCodeCompiler::emit_NewObject() { |
| 2540 | EmitRestoreTailCallReg(masm); |
| 2541 | |
| 2542 | masm.push(ICStubReg); // stub. |
| 2543 | pushStubPayload(masm, R0.scratchReg()); |
| 2544 | |
| 2545 | using Fn = |
| 2546 | bool (*)(JSContext*, BaselineFrame*, ICFallbackStub*, MutableHandleValue); |
| 2547 | return tailCallVM<Fn, DoNewObjectFallback>(masm); |
| 2548 | } |
| 2549 | |
| 2550 | // |
| 2551 | // CloseIter_Fallback |
| 2552 | // |
| 2553 | |
| 2554 | bool DoCloseIterFallback(JSContext* cx, BaselineFrame* frame, |
| 2555 | ICFallbackStub* stub, HandleObject iter) { |
| 2556 | stub->incrementEnteredCount(); |
| 2557 | MaybeNotifyWarp(frame->outerScript(), stub); |
| 2558 | FallbackICSpew(cx, stub, "CloseIter"); |
| 2559 | |
| 2560 | jsbytecode* pc = StubOffsetToPc(stub, frame->script()); |
| 2561 | CompletionKind kind = CompletionKind(GET_UINT8(pc)); |
| 2562 | |
| 2563 | TryAttachStub<CloseIterIRGenerator>("CloseIter", cx, frame, stub, iter, kind); |
| 2564 | |
| 2565 | return CloseIterOperation(cx, iter, kind); |
| 2566 | } |
| 2567 | |
| 2568 | bool FallbackICCodeCompiler::emit_CloseIter() { |
| 2569 | EmitRestoreTailCallReg(masm); |
| 2570 | |
| 2571 | masm.push(R0.scratchReg()); |
| 2572 | masm.push(ICStubReg); |
| 2573 | pushStubPayload(masm, R0.scratchReg()); |
| 2574 | |
| 2575 | using Fn = |
| 2576 | bool (*)(JSContext*, BaselineFrame*, ICFallbackStub*, HandleObject); |
| 2577 | return tailCallVM<Fn, DoCloseIterFallback>(masm); |
| 2578 | } |
| 2579 | |
| 2580 | // |
| 2581 | // OptimizeGetIterator_Fallback |
| 2582 | // |
| 2583 | |
| 2584 | bool DoOptimizeGetIteratorFallback(JSContext* cx, BaselineFrame* frame, |
| 2585 | ICFallbackStub* stub, HandleValue value, |
| 2586 | MutableHandleValue res) { |
| 2587 | stub->incrementEnteredCount(); |
| 2588 | MaybeNotifyWarp(frame->outerScript(), stub); |
| 2589 | FallbackICSpew(cx, stub, "OptimizeGetIterator"); |
| 2590 | |
| 2591 | TryAttachStub<OptimizeGetIteratorIRGenerator>("OptimizeGetIterator", cx, |
| 2592 | frame, stub, value); |
| 2593 | |
| 2594 | bool result; |
| 2595 | if (!OptimizeGetIterator(cx, value, &result)) { |
| 2596 | return false; |
| 2597 | } |
| 2598 | res.setBoolean(result); |
| 2599 | return true; |
| 2600 | } |
| 2601 | |
| 2602 | bool FallbackICCodeCompiler::emit_OptimizeGetIterator() { |
| 2603 | EmitRestoreTailCallReg(masm); |
| 2604 | |
| 2605 | masm.pushValue(R0); |
| 2606 | masm.push(ICStubReg); |
| 2607 | pushStubPayload(masm, R0.scratchReg()); |
| 2608 | |
| 2609 | using Fn = bool (*)(JSContext*, BaselineFrame*, ICFallbackStub*, HandleValue, |
| 2610 | MutableHandleValue); |
| 2611 | return tailCallVM<Fn, DoOptimizeGetIteratorFallback>(masm); |
| 2612 | } |
| 2613 | |
| 2614 | bool JitRuntime::generateBaselineICFallbackCode(JSContext* cx) { |
| 2615 | TempAllocator temp(&cx->tempLifoAlloc()); |
| 2616 | StackMacroAssembler masm(cx, temp); |
| 2617 | PerfSpewerRangeRecorder rangeRecorder(masm); |
| 2618 | AutoCreatedBy acb(masm, "JitRuntime::generateBaselineICFallbackCode"); |
| 2619 | |
| 2620 | BaselineICFallbackCode& fallbackCode = baselineICFallbackCode_.ref(); |
| 2621 | FallbackICCodeCompiler compiler(cx, fallbackCode, masm); |
| 2622 | |
| 2623 | JitSpew(JitSpew_Codegen, "# Emitting Baseline IC fallback code"); |
| 2624 | |
| 2625 | #define EMIT_CODE(kind) \ |
| 2626 | { \ |
| 2627 | AutoCreatedBy acb(masm, "kind=" #kind); \ |
| 2628 | uint32_t offset = startTrampolineCode(masm); \ |
| 2629 | InitMacroAssemblerForICStub(masm); \ |
| 2630 | if (!compiler.emit_##kind()) { \ |
| 2631 | return false; \ |
| 2632 | } \ |
| 2633 | fallbackCode.initOffset(BaselineICFallbackKind::kind, offset); \ |
| 2634 | rangeRecorder.recordOffset("BaselineICFallback: " #kind); \ |
| 2635 | } |
| 2636 | IC_BASELINE_FALLBACK_CODE_KIND_LIST(EMIT_CODE)EMIT_CODE(NewArray) EMIT_CODE(NewObject) EMIT_CODE(ToBool) EMIT_CODE (UnaryArith) EMIT_CODE(Call) EMIT_CODE(CallConstructing) EMIT_CODE (SpreadCall) EMIT_CODE(SpreadCallConstructing) EMIT_CODE(GetElem ) EMIT_CODE(GetElemSuper) EMIT_CODE(SetElem) EMIT_CODE(In) EMIT_CODE (HasOwn) EMIT_CODE(CheckPrivateField) EMIT_CODE(GetName) EMIT_CODE (BindName) EMIT_CODE(GetIntrinsic) EMIT_CODE(SetProp) EMIT_CODE (GetIterator) EMIT_CODE(OptimizeSpreadCall) EMIT_CODE(InstanceOf ) EMIT_CODE(TypeOf) EMIT_CODE(TypeOfEq) EMIT_CODE(ToPropertyKey ) EMIT_CODE(Rest) EMIT_CODE(BinaryArith) EMIT_CODE(Compare) EMIT_CODE (GetProp) EMIT_CODE(GetPropSuper) EMIT_CODE(CloseIter) EMIT_CODE (OptimizeGetIterator) |
| 2637 | #undef EMIT_CODE |
| 2638 | |
| 2639 | Linker linker(masm); |
| 2640 | JitCode* code = linker.newCode(cx, CodeKind::Other); |
| 2641 | if (!code) { |
| 2642 | return false; |
| 2643 | } |
| 2644 | |
| 2645 | rangeRecorder.collectRangesForJitCode(code); |
| 2646 | |
| 2647 | #ifdef MOZ_VTUNE1 |
| 2648 | vtune::MarkStub(code, "BaselineICFallback"); |
| 2649 | #endif |
| 2650 | |
| 2651 | fallbackCode.initCode(code); |
| 2652 | return true; |
| 2653 | } |
| 2654 | |
| 2655 | } // namespace jit |
| 2656 | } // namespace js |