| /* |
| * Copyright (C) 2008-2022 Apple Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY |
| * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
| * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "config.h" |
| |
| #if ENABLE(JIT) |
| |
| #include "JIT.h" |
| |
| #include "BytecodeGraph.h" |
| #include "CodeBlock.h" |
| #include "CodeBlockWithJITType.h" |
| #include "DFGCapabilities.h" |
| #include "JITInlines.h" |
| #include "JITOperations.h" |
| #include "JITSizeStatistics.h" |
| #include "LinkBuffer.h" |
| #include "MaxFrameExtentForSlowPathCall.h" |
| #include "ModuleProgramCodeBlock.h" |
| #include "PCToCodeOriginMap.h" |
| #include "ProbeContext.h" |
| #include "ProfilerDatabase.h" |
| #include "ProgramCodeBlock.h" |
| #include "SlowPathCall.h" |
| #include "StackAlignment.h" |
| #include "ThunkGenerators.h" |
| #include "TypeProfilerLog.h" |
| #include <wtf/GraphNodeWorklist.h> |
| #include <wtf/SimpleStats.h> |
| |
| namespace JSC { |
| namespace JITInternal { |
| static constexpr const bool verbose = false; |
| } |
| |
| Seconds totalBaselineCompileTime; |
| Seconds totalDFGCompileTime; |
| Seconds totalFTLCompileTime; |
| Seconds totalFTLDFGCompileTime; |
| Seconds totalFTLB3CompileTime; |
| |
| void ctiPatchCallByReturnAddress(ReturnAddressPtr returnAddress, FunctionPtr<CFunctionPtrTag> newCalleeFunction) |
| { |
| MacroAssembler::repatchCall( |
| CodeLocationCall<ReturnAddressPtrTag>(MacroAssemblerCodePtr<ReturnAddressPtrTag>(returnAddress)), |
| newCalleeFunction.retagged<OperationPtrTag>()); |
| } |
| |
| JIT::JIT(VM& vm, CodeBlock* codeBlock, BytecodeIndex loopOSREntryBytecodeIndex) |
| : JSInterfaceJIT(&vm, nullptr) |
| , m_interpreter(vm.interpreter) |
| , m_labels(codeBlock ? codeBlock->instructions().size() : 0) |
| , m_pcToCodeOriginMapBuilder(vm) |
| , m_canBeOptimized(false) |
| , m_shouldEmitProfiling(false) |
| , m_loopOSREntryBytecodeIndex(loopOSREntryBytecodeIndex) |
| { |
| auto globalObjectConstant = addToConstantPool(JITConstantPool::Type::GlobalObject); |
| ASSERT_UNUSED(globalObjectConstant, globalObjectConstant == s_globalObjectConstant); |
| m_profiledCodeBlock = codeBlock; |
| m_unlinkedCodeBlock = codeBlock->unlinkedCodeBlock(); |
| } |
| |
| JIT::~JIT() |
| { |
| } |
| |
| JITConstantPool::Constant JIT::addToConstantPool(JITConstantPool::Type type, void* payload) |
| { |
| unsigned result = m_constantPool.size(); |
| m_constantPool.append(JITConstantPool::Value { payload, type }); |
| return result; |
| } |
| |
| std::tuple<BaselineUnlinkedStructureStubInfo*, JITConstantPool::Constant> JIT::addUnlinkedStructureStubInfo() |
| { |
| void* unlinkedStubInfoIndex = bitwise_cast<void*>(static_cast<uintptr_t>(m_unlinkedStubInfos.size())); |
| BaselineUnlinkedStructureStubInfo* stubInfo = &m_unlinkedStubInfos.alloc(); |
| JITConstantPool::Constant stubInfoIndex = addToConstantPool(JITConstantPool::Type::StructureStubInfo, unlinkedStubInfoIndex); |
| return std::tuple { stubInfo, stubInfoIndex }; |
| } |
| |
| UnlinkedCallLinkInfo* JIT::addUnlinkedCallLinkInfo() |
| { |
| return &m_unlinkedCalls.alloc(); |
| } |
| |
| #if ENABLE(DFG_JIT) |
| void JIT::emitEnterOptimizationCheck() |
| { |
| if (!canBeOptimized()) |
| return; |
| |
| JumpList skipOptimize; |
| loadPtr(addressFor(CallFrameSlot::codeBlock), regT0); |
| skipOptimize.append(branchAdd32(Signed, TrustedImm32(Options::executionCounterIncrementForEntry()), Address(regT0, CodeBlock::offsetOfJITExecuteCounter()))); |
| ASSERT(!m_bytecodeIndex.offset()); |
| |
| copyLLIntBaselineCalleeSavesFromFrameOrRegisterToEntryFrameCalleeSavesBuffer(vm().topEntryFrame); |
| |
| callOperationNoExceptionCheck(operationOptimize, TrustedImmPtr(&vm()), m_bytecodeIndex.asBits()); |
| skipOptimize.append(branchTestPtr(Zero, returnValueGPR)); |
| farJump(returnValueGPR, GPRInfo::callFrameRegister); |
| skipOptimize.link(this); |
| } |
| #endif |
| |
| void JIT::emitNotifyWriteWatchpoint(GPRReg pointerToSet) |
| { |
| auto ok = branchTestPtr(Zero, pointerToSet); |
| addSlowCase(branch8(NotEqual, Address(pointerToSet, WatchpointSet::offsetOfState()), TrustedImm32(IsInvalidated))); |
| ok.link(this); |
| } |
| |
| void JIT::emitVarReadOnlyCheck(ResolveType resolveType, GPRReg scratchGPR) |
| { |
| if (resolveType == GlobalVar || resolveType == GlobalVarWithVarInjectionChecks) { |
| loadGlobalObject(scratchGPR); |
| loadPtr(Address(scratchGPR, JSGlobalObject::offsetOfVarReadOnlyWatchpoint()), scratchGPR); |
| addSlowCase(branch8(Equal, Address(scratchGPR, WatchpointSet::offsetOfState()), TrustedImm32(IsInvalidated))); |
| } |
| } |
| |
| void JIT::resetSP() |
| { |
| addPtr(TrustedImm32(stackPointerOffsetFor(m_unlinkedCodeBlock) * sizeof(Register)), callFrameRegister, stackPointerRegister); |
| checkStackPointerAlignment(); |
| } |
| |
| #define NEXT_OPCODE_IN_MAIN(name) \ |
| if (previousSlowCasesSize != m_slowCases.size()) \ |
| ++m_bytecodeCountHavingSlowCase; \ |
| m_bytecodeIndex = BytecodeIndex(m_bytecodeIndex.offset() + currentInstruction->size()); \ |
| break; |
| |
| #define DEFINE_SLOW_OP(name) \ |
| case op_##name: { \ |
| if (m_bytecodeIndex >= startBytecodeIndex) { \ |
| JITSlowPathCall slowPathCall(this, slow_path_##name); \ |
| slowPathCall.call(); \ |
| } \ |
| NEXT_OPCODE_IN_MAIN(op_##name); \ |
| } |
| |
| #define DEFINE_OP(name) \ |
| case name: { \ |
| if (m_bytecodeIndex >= startBytecodeIndex) { \ |
| emit_##name(currentInstruction); \ |
| } \ |
| NEXT_OPCODE_IN_MAIN(name); \ |
| } |
| |
| #define DEFINE_SLOWCASE_OP(name) \ |
| case name: { \ |
| emitSlow_##name(currentInstruction, iter); \ |
| break; \ |
| } |
| |
| #define DEFINE_SLOWCASE_SLOW_OP(name) \ |
| case op_##name: { \ |
| emitSlowCaseCall(iter, slow_path_##name); \ |
| break; \ |
| } |
| |
| void JIT::emitSlowCaseCall(Vector<SlowCaseEntry>::iterator& iter, SlowPathFunction stub) |
| { |
| linkAllSlowCases(iter); |
| |
| JITSlowPathCall slowPathCall(this, stub); |
| slowPathCall.call(); |
| } |
| |
| void JIT::privateCompileMainPass() |
| { |
| if (JITInternal::verbose) |
| dataLog("Compiling ", *m_profiledCodeBlock, "\n"); |
| |
| jitAssertTagsInPlace(); |
| jitAssertArgumentCountSane(); |
| |
| auto& instructions = m_unlinkedCodeBlock->instructions(); |
| unsigned instructionCount = m_unlinkedCodeBlock->instructions().size(); |
| |
| m_callLinkInfoIndex = 0; |
| |
| BytecodeIndex startBytecodeIndex(0); |
| |
| m_bytecodeCountHavingSlowCase = 0; |
| for (m_bytecodeIndex = BytecodeIndex(0); m_bytecodeIndex.offset() < instructionCount; ) { |
| unsigned previousSlowCasesSize = m_slowCases.size(); |
| if (m_bytecodeIndex == startBytecodeIndex && startBytecodeIndex.offset() > 0) { |
| // We've proven all bytecode instructions up until here are unreachable. |
| // Let's ensure that by crashing if it's ever hit. |
| breakpoint(); |
| } |
| |
| if (m_disassembler) |
| m_disassembler->setForBytecodeMainPath(m_bytecodeIndex.offset(), label()); |
| const auto* currentInstruction = instructions.at(m_bytecodeIndex).ptr(); |
| ASSERT(currentInstruction->size()); |
| |
| m_pcToCodeOriginMapBuilder.appendItem(label(), CodeOrigin(m_bytecodeIndex)); |
| |
| m_labels[m_bytecodeIndex.offset()] = label(); |
| |
| if (JITInternal::verbose) |
| dataLogLn("Baseline JIT emitting code for ", m_bytecodeIndex, " at offset ", (long)debugOffset()); |
| |
| OpcodeID opcodeID = currentInstruction->opcodeID(); |
| |
| std::optional<JITSizeStatistics::Marker> sizeMarker; |
| if (UNLIKELY(m_bytecodeIndex >= startBytecodeIndex && Options::dumpBaselineJITSizeStatistics())) { |
| String id = makeString("Baseline_fast_", opcodeNames[opcodeID]); |
| sizeMarker = m_vm->jitSizeStatistics->markStart(id, *this); |
| } |
| |
| #if ASSERT_ENABLED |
| if (opcodeID != op_catch) { |
| loadPtr(addressFor(CallFrameSlot::codeBlock), regT0); |
| loadPtr(Address(regT0, CodeBlock::offsetOfMetadataTable()), regT1); |
| loadPtr(Address(regT0, CodeBlock::offsetOfJITData()), regT2); |
| |
| m_consistencyCheckCalls.append(nearCall()); |
| } |
| #endif |
| |
| if (UNLIKELY(m_compilation)) { |
| add64( |
| TrustedImm32(1), |
| AbsoluteAddress(m_compilation->executionCounterFor(Profiler::OriginStack(Profiler::Origin( |
| m_compilation->bytecodes(), m_bytecodeIndex)))->address())); |
| } |
| |
| if (Options::eagerlyUpdateTopCallFrame()) |
| updateTopCallFrame(); |
| |
| unsigned bytecodeOffset = m_bytecodeIndex.offset(); |
| if (UNLIKELY(Options::traceBaselineJITExecution())) { |
| probeDebug([=] (Probe::Context& ctx) { |
| CodeBlock* codeBlock = ctx.fp<CallFrame*>()->codeBlock(); |
| dataLogLn("JIT [", bytecodeOffset, "] ", opcodeNames[opcodeID], " cfr ", RawPointer(ctx.fp()), " @ ", codeBlock); |
| }); |
| } |
| |
| switch (opcodeID) { |
| DEFINE_SLOW_OP(less) |
| DEFINE_SLOW_OP(lesseq) |
| DEFINE_SLOW_OP(greater) |
| DEFINE_SLOW_OP(greatereq) |
| DEFINE_SLOW_OP(instanceof_custom) |
| DEFINE_SLOW_OP(is_callable) |
| DEFINE_SLOW_OP(is_constructor) |
| DEFINE_SLOW_OP(typeof) |
| DEFINE_SLOW_OP(typeof_is_object) |
| DEFINE_SLOW_OP(typeof_is_function) |
| DEFINE_SLOW_OP(strcat) |
| DEFINE_SLOW_OP(push_with_scope) |
| DEFINE_SLOW_OP(create_lexical_environment) |
| DEFINE_SLOW_OP(get_by_val_with_this) |
| DEFINE_SLOW_OP(put_by_id_with_this) |
| DEFINE_SLOW_OP(put_by_val_with_this) |
| DEFINE_SLOW_OP(resolve_scope_for_hoisting_func_decl_in_eval) |
| DEFINE_SLOW_OP(define_data_property) |
| DEFINE_SLOW_OP(define_accessor_property) |
| DEFINE_SLOW_OP(unreachable) |
| DEFINE_SLOW_OP(throw_static_error) |
| DEFINE_SLOW_OP(new_array_with_spread) |
| DEFINE_SLOW_OP(new_array_buffer) |
| DEFINE_SLOW_OP(spread) |
| DEFINE_SLOW_OP(create_direct_arguments) |
| DEFINE_SLOW_OP(create_scoped_arguments) |
| DEFINE_SLOW_OP(create_cloned_arguments) |
| DEFINE_SLOW_OP(create_arguments_butterfly) |
| DEFINE_SLOW_OP(create_rest) |
| DEFINE_SLOW_OP(create_promise) |
| DEFINE_SLOW_OP(new_promise) |
| DEFINE_SLOW_OP(create_generator) |
| DEFINE_SLOW_OP(create_async_generator) |
| DEFINE_SLOW_OP(new_generator) |
| |
| DEFINE_OP(op_add) |
| DEFINE_OP(op_bitnot) |
| DEFINE_OP(op_bitand) |
| DEFINE_OP(op_bitor) |
| DEFINE_OP(op_bitxor) |
| DEFINE_OP(op_call) |
| DEFINE_OP(op_tail_call) |
| DEFINE_OP(op_call_eval) |
| DEFINE_OP(op_call_varargs) |
| DEFINE_OP(op_tail_call_varargs) |
| DEFINE_OP(op_tail_call_forward_arguments) |
| DEFINE_OP(op_construct_varargs) |
| DEFINE_OP(op_catch) |
| DEFINE_OP(op_construct) |
| DEFINE_OP(op_create_this) |
| DEFINE_OP(op_to_this) |
| DEFINE_OP(op_get_argument) |
| DEFINE_OP(op_argument_count) |
| DEFINE_OP(op_get_rest_length) |
| DEFINE_OP(op_check_tdz) |
| DEFINE_OP(op_identity_with_profile) |
| DEFINE_OP(op_debug) |
| DEFINE_OP(op_del_by_id) |
| DEFINE_OP(op_del_by_val) |
| DEFINE_OP(op_div) |
| DEFINE_OP(op_end) |
| DEFINE_OP(op_enter) |
| DEFINE_OP(op_get_scope) |
| DEFINE_OP(op_eq) |
| DEFINE_OP(op_eq_null) |
| DEFINE_OP(op_below) |
| DEFINE_OP(op_beloweq) |
| DEFINE_OP(op_try_get_by_id) |
| DEFINE_OP(op_in_by_id) |
| DEFINE_OP(op_in_by_val) |
| DEFINE_OP(op_has_private_name) |
| DEFINE_OP(op_has_private_brand) |
| DEFINE_OP(op_get_by_id) |
| DEFINE_OP(op_get_by_id_with_this) |
| DEFINE_OP(op_get_by_id_direct) |
| DEFINE_OP(op_get_by_val) |
| DEFINE_OP(op_get_property_enumerator) |
| DEFINE_OP(op_enumerator_next) |
| DEFINE_OP(op_enumerator_get_by_val) |
| DEFINE_OP(op_enumerator_in_by_val) |
| DEFINE_OP(op_enumerator_has_own_property) |
| DEFINE_OP(op_get_private_name) |
| DEFINE_OP(op_set_private_brand) |
| DEFINE_OP(op_check_private_brand) |
| DEFINE_OP(op_get_prototype_of) |
| DEFINE_OP(op_overrides_has_instance) |
| DEFINE_OP(op_instanceof) |
| DEFINE_OP(op_is_empty) |
| DEFINE_OP(op_typeof_is_undefined) |
| DEFINE_OP(op_is_undefined_or_null) |
| DEFINE_OP(op_is_boolean) |
| DEFINE_OP(op_is_number) |
| DEFINE_OP(op_is_big_int) |
| DEFINE_OP(op_is_object) |
| DEFINE_OP(op_is_cell_with_type) |
| DEFINE_OP(op_jeq_null) |
| DEFINE_OP(op_jfalse) |
| DEFINE_OP(op_jmp) |
| DEFINE_OP(op_jneq_null) |
| DEFINE_OP(op_jundefined_or_null) |
| DEFINE_OP(op_jnundefined_or_null) |
| DEFINE_OP(op_jeq_ptr) |
| DEFINE_OP(op_jneq_ptr) |
| DEFINE_OP(op_jless) |
| DEFINE_OP(op_jlesseq) |
| DEFINE_OP(op_jgreater) |
| DEFINE_OP(op_jgreatereq) |
| DEFINE_OP(op_jnless) |
| DEFINE_OP(op_jnlesseq) |
| DEFINE_OP(op_jngreater) |
| DEFINE_OP(op_jngreatereq) |
| DEFINE_OP(op_jeq) |
| DEFINE_OP(op_jneq) |
| DEFINE_OP(op_jstricteq) |
| DEFINE_OP(op_jnstricteq) |
| DEFINE_OP(op_jbelow) |
| DEFINE_OP(op_jbeloweq) |
| DEFINE_OP(op_jtrue) |
| DEFINE_OP(op_loop_hint) |
| DEFINE_OP(op_check_traps) |
| DEFINE_OP(op_nop) |
| DEFINE_OP(op_super_sampler_begin) |
| DEFINE_OP(op_super_sampler_end) |
| DEFINE_OP(op_lshift) |
| DEFINE_OP(op_mod) |
| DEFINE_OP(op_pow) |
| DEFINE_OP(op_mov) |
| DEFINE_OP(op_mul) |
| DEFINE_OP(op_negate) |
| DEFINE_OP(op_neq) |
| DEFINE_OP(op_neq_null) |
| DEFINE_OP(op_new_array) |
| DEFINE_OP(op_new_array_with_size) |
| DEFINE_OP(op_new_func) |
| DEFINE_OP(op_new_func_exp) |
| DEFINE_OP(op_new_generator_func) |
| DEFINE_OP(op_new_generator_func_exp) |
| DEFINE_OP(op_new_async_func) |
| DEFINE_OP(op_new_async_func_exp) |
| DEFINE_OP(op_new_async_generator_func) |
| DEFINE_OP(op_new_async_generator_func_exp) |
| DEFINE_OP(op_new_object) |
| DEFINE_OP(op_new_regexp) |
| DEFINE_OP(op_not) |
| DEFINE_OP(op_nstricteq) |
| DEFINE_OP(op_dec) |
| DEFINE_OP(op_inc) |
| DEFINE_OP(op_profile_type) |
| DEFINE_OP(op_profile_control_flow) |
| DEFINE_OP(op_get_parent_scope) |
| DEFINE_OP(op_put_by_id) |
| DEFINE_OP(op_put_by_val_direct) |
| DEFINE_OP(op_put_by_val) |
| DEFINE_OP(op_put_private_name) |
| DEFINE_OP(op_put_getter_by_id) |
| DEFINE_OP(op_put_setter_by_id) |
| DEFINE_OP(op_put_getter_setter_by_id) |
| DEFINE_OP(op_put_getter_by_val) |
| DEFINE_OP(op_put_setter_by_val) |
| DEFINE_OP(op_to_property_key) |
| |
| DEFINE_OP(op_get_internal_field) |
| DEFINE_OP(op_put_internal_field) |
| |
| DEFINE_OP(op_iterator_open) |
| DEFINE_OP(op_iterator_next) |
| |
| DEFINE_OP(op_ret) |
| DEFINE_OP(op_rshift) |
| DEFINE_OP(op_unsigned) |
| DEFINE_OP(op_urshift) |
| DEFINE_OP(op_set_function_name) |
| DEFINE_OP(op_stricteq) |
| DEFINE_OP(op_sub) |
| DEFINE_OP(op_switch_char) |
| DEFINE_OP(op_switch_imm) |
| DEFINE_OP(op_switch_string) |
| DEFINE_OP(op_throw) |
| DEFINE_OP(op_to_number) |
| DEFINE_OP(op_to_numeric) |
| DEFINE_OP(op_to_string) |
| DEFINE_OP(op_to_object) |
| DEFINE_OP(op_to_primitive) |
| |
| DEFINE_OP(op_resolve_scope) |
| DEFINE_OP(op_get_from_scope) |
| DEFINE_OP(op_put_to_scope) |
| DEFINE_OP(op_get_from_arguments) |
| DEFINE_OP(op_put_to_arguments) |
| |
| DEFINE_OP(op_log_shadow_chicken_prologue) |
| DEFINE_OP(op_log_shadow_chicken_tail) |
| |
| default: |
| RELEASE_ASSERT_NOT_REACHED(); |
| } |
| |
| if (UNLIKELY(sizeMarker)) |
| m_vm->jitSizeStatistics->markEnd(WTFMove(*sizeMarker), *this); |
| |
| if (JITInternal::verbose) |
| dataLog("At ", bytecodeOffset, ": ", m_slowCases.size(), "\n"); |
| } |
| |
| RELEASE_ASSERT(m_callLinkInfoIndex == m_callCompilationInfo.size()); |
| |
| #ifndef NDEBUG |
| // Reset this, in order to guard its use with ASSERTs. |
| m_bytecodeIndex = BytecodeIndex(); |
| #endif |
| } |
| |
| void JIT::privateCompileLinkPass() |
| { |
| unsigned jmpTableCount = m_jmpTable.size(); |
| for (unsigned i = 0; i < jmpTableCount; ++i) |
| m_jmpTable[i].from.linkTo(m_labels[m_jmpTable[i].toBytecodeOffset], this); |
| m_jmpTable.clear(); |
| } |
| |
| void JIT::privateCompileSlowCases() |
| { |
| m_getByIdIndex = 0; |
| m_getByValIndex = 0; |
| m_getByIdWithThisIndex = 0; |
| m_putByIdIndex = 0; |
| m_putByValIndex = 0; |
| m_inByIdIndex = 0; |
| m_inByValIndex = 0; |
| m_delByIdIndex = 0; |
| m_delByValIndex = 0; |
| m_instanceOfIndex = 0; |
| m_privateBrandAccessIndex = 0; |
| m_callLinkInfoIndex = 0; |
| |
| unsigned bytecodeCountHavingSlowCase = 0; |
| for (Vector<SlowCaseEntry>::iterator iter = m_slowCases.begin(); iter != m_slowCases.end();) { |
| m_bytecodeIndex = iter->to; |
| |
| m_pcToCodeOriginMapBuilder.appendItem(label(), CodeOrigin(m_bytecodeIndex)); |
| |
| BytecodeIndex firstTo = m_bytecodeIndex; |
| |
| const auto* currentInstruction = m_unlinkedCodeBlock->instructions().at(m_bytecodeIndex).ptr(); |
| |
| if (JITInternal::verbose) |
| dataLogLn("Baseline JIT emitting slow code for ", m_bytecodeIndex, " at offset ", (long)debugOffset()); |
| |
| if (m_disassembler) |
| m_disassembler->setForBytecodeSlowPath(m_bytecodeIndex.offset(), label()); |
| |
| OpcodeID opcodeID = currentInstruction->opcodeID(); |
| |
| std::optional<JITSizeStatistics::Marker> sizeMarker; |
| if (UNLIKELY(Options::dumpBaselineJITSizeStatistics())) { |
| String id = makeString("Baseline_slow_", opcodeNames[opcodeID]); |
| sizeMarker = m_vm->jitSizeStatistics->markStart(id, *this); |
| } |
| |
| if (UNLIKELY(Options::traceBaselineJITExecution())) { |
| unsigned bytecodeOffset = m_bytecodeIndex.offset(); |
| probeDebug([=] (Probe::Context& ctx) { |
| CodeBlock* codeBlock = ctx.fp<CallFrame*>()->codeBlock(); |
| dataLogLn("JIT [", bytecodeOffset, "] SLOW ", opcodeNames[opcodeID], " cfr ", RawPointer(ctx.fp()), " @ ", codeBlock); |
| }); |
| } |
| |
| switch (currentInstruction->opcodeID()) { |
| DEFINE_SLOWCASE_OP(op_add) |
| DEFINE_SLOWCASE_OP(op_call) |
| DEFINE_SLOWCASE_OP(op_tail_call) |
| DEFINE_SLOWCASE_OP(op_call_eval) |
| DEFINE_SLOWCASE_OP(op_call_varargs) |
| DEFINE_SLOWCASE_OP(op_tail_call_varargs) |
| DEFINE_SLOWCASE_OP(op_tail_call_forward_arguments) |
| DEFINE_SLOWCASE_OP(op_construct_varargs) |
| DEFINE_SLOWCASE_OP(op_construct) |
| DEFINE_SLOWCASE_OP(op_eq) |
| DEFINE_SLOWCASE_OP(op_try_get_by_id) |
| DEFINE_SLOWCASE_OP(op_in_by_id) |
| DEFINE_SLOWCASE_OP(op_in_by_val) |
| DEFINE_SLOWCASE_OP(op_has_private_name) |
| DEFINE_SLOWCASE_OP(op_has_private_brand) |
| DEFINE_SLOWCASE_OP(op_get_by_id) |
| DEFINE_SLOWCASE_OP(op_get_by_id_with_this) |
| DEFINE_SLOWCASE_OP(op_get_by_id_direct) |
| DEFINE_SLOWCASE_OP(op_get_by_val) |
| DEFINE_SLOWCASE_OP(op_enumerator_get_by_val) |
| DEFINE_SLOWCASE_OP(op_get_private_name) |
| DEFINE_SLOWCASE_OP(op_set_private_brand) |
| DEFINE_SLOWCASE_OP(op_check_private_brand) |
| DEFINE_SLOWCASE_OP(op_instanceof) |
| DEFINE_SLOWCASE_OP(op_jless) |
| DEFINE_SLOWCASE_OP(op_jlesseq) |
| DEFINE_SLOWCASE_OP(op_jgreater) |
| DEFINE_SLOWCASE_OP(op_jgreatereq) |
| DEFINE_SLOWCASE_OP(op_jnless) |
| DEFINE_SLOWCASE_OP(op_jnlesseq) |
| DEFINE_SLOWCASE_OP(op_jngreater) |
| DEFINE_SLOWCASE_OP(op_jngreatereq) |
| DEFINE_SLOWCASE_OP(op_jeq) |
| DEFINE_SLOWCASE_OP(op_jneq) |
| DEFINE_SLOWCASE_OP(op_jstricteq) |
| DEFINE_SLOWCASE_OP(op_jnstricteq) |
| DEFINE_SLOWCASE_OP(op_loop_hint) |
| DEFINE_SLOWCASE_OP(op_check_traps) |
| DEFINE_SLOWCASE_OP(op_mod) |
| DEFINE_SLOWCASE_OP(op_pow) |
| DEFINE_SLOWCASE_OP(op_mul) |
| DEFINE_SLOWCASE_OP(op_negate) |
| DEFINE_SLOWCASE_OP(op_neq) |
| DEFINE_SLOWCASE_OP(op_new_object) |
| DEFINE_SLOWCASE_OP(op_put_by_id) |
| case op_put_by_val_direct: |
| DEFINE_SLOWCASE_OP(op_put_by_val) |
| DEFINE_SLOWCASE_OP(op_put_private_name) |
| DEFINE_SLOWCASE_OP(op_del_by_val) |
| DEFINE_SLOWCASE_OP(op_del_by_id) |
| DEFINE_SLOWCASE_OP(op_sub) |
| DEFINE_SLOWCASE_OP(op_put_to_scope) |
| |
| DEFINE_SLOWCASE_OP(op_iterator_open) |
| DEFINE_SLOWCASE_OP(op_iterator_next) |
| |
| DEFINE_SLOWCASE_SLOW_OP(unsigned) |
| DEFINE_SLOWCASE_SLOW_OP(inc) |
| DEFINE_SLOWCASE_SLOW_OP(dec) |
| DEFINE_SLOWCASE_SLOW_OP(bitnot) |
| DEFINE_SLOWCASE_SLOW_OP(bitand) |
| DEFINE_SLOWCASE_SLOW_OP(bitor) |
| DEFINE_SLOWCASE_SLOW_OP(bitxor) |
| DEFINE_SLOWCASE_SLOW_OP(lshift) |
| DEFINE_SLOWCASE_SLOW_OP(rshift) |
| DEFINE_SLOWCASE_SLOW_OP(urshift) |
| DEFINE_SLOWCASE_SLOW_OP(div) |
| DEFINE_SLOWCASE_SLOW_OP(create_this) |
| DEFINE_SLOWCASE_SLOW_OP(create_promise) |
| DEFINE_SLOWCASE_SLOW_OP(create_generator) |
| DEFINE_SLOWCASE_SLOW_OP(create_async_generator) |
| DEFINE_SLOWCASE_SLOW_OP(to_this) |
| DEFINE_SLOWCASE_SLOW_OP(to_primitive) |
| DEFINE_SLOWCASE_SLOW_OP(to_number) |
| DEFINE_SLOWCASE_SLOW_OP(to_numeric) |
| DEFINE_SLOWCASE_SLOW_OP(to_string) |
| DEFINE_SLOWCASE_SLOW_OP(to_object) |
| DEFINE_SLOWCASE_SLOW_OP(not) |
| DEFINE_SLOWCASE_SLOW_OP(stricteq) |
| DEFINE_SLOWCASE_SLOW_OP(nstricteq) |
| DEFINE_SLOWCASE_SLOW_OP(get_prototype_of) |
| DEFINE_SLOWCASE_SLOW_OP(check_tdz) |
| DEFINE_SLOWCASE_SLOW_OP(to_property_key) |
| default: |
| RELEASE_ASSERT_NOT_REACHED(); |
| } |
| |
| if (JITInternal::verbose) |
| dataLog("At ", firstTo, " slow: ", iter - m_slowCases.begin(), "\n"); |
| |
| RELEASE_ASSERT_WITH_MESSAGE(iter == m_slowCases.end() || firstTo.offset() != iter->to.offset(), "Not enough jumps linked in slow case codegen."); |
| RELEASE_ASSERT_WITH_MESSAGE(firstTo.offset() == (iter - 1)->to.offset(), "Too many jumps linked in slow case codegen."); |
| |
| jump().linkTo(fastPathResumePoint(), this); |
| ++bytecodeCountHavingSlowCase; |
| |
| if (UNLIKELY(sizeMarker)) { |
| m_bytecodeIndex = BytecodeIndex(m_bytecodeIndex.offset() + currentInstruction->size()); |
| m_vm->jitSizeStatistics->markEnd(WTFMove(*sizeMarker), *this); |
| } |
| } |
| |
| RELEASE_ASSERT(bytecodeCountHavingSlowCase == m_bytecodeCountHavingSlowCase); |
| RELEASE_ASSERT(m_getByIdIndex == m_getByIds.size()); |
| RELEASE_ASSERT(m_getByIdWithThisIndex == m_getByIdsWithThis.size()); |
| RELEASE_ASSERT(m_putByIdIndex == m_putByIds.size()); |
| RELEASE_ASSERT(m_putByValIndex == m_putByVals.size()); |
| RELEASE_ASSERT(m_inByIdIndex == m_inByIds.size()); |
| RELEASE_ASSERT(m_instanceOfIndex == m_instanceOfs.size()); |
| RELEASE_ASSERT(m_privateBrandAccessIndex == m_privateBrandAccesses.size()); |
| RELEASE_ASSERT(m_callLinkInfoIndex == m_callCompilationInfo.size()); |
| |
| #ifndef NDEBUG |
| // Reset this, in order to guard its use with ASSERTs. |
| m_bytecodeIndex = BytecodeIndex(); |
| #endif |
| } |
| |
| void JIT::emitMaterializeMetadataAndConstantPoolRegisters() |
| { |
| loadPtr(addressFor(CallFrameSlot::codeBlock), regT0); |
| loadPtr(Address(regT0, CodeBlock::offsetOfMetadataTable()), s_metadataGPR); |
| loadPtr(Address(regT0, CodeBlock::offsetOfJITData()), s_constantsGPR); |
| } |
| |
| void JIT::emitSaveCalleeSaves() |
| { |
| Base::emitSaveCalleeSavesFor(&RegisterAtOffsetList::llintBaselineCalleeSaveRegisters()); |
| } |
| |
| void JIT::emitRestoreCalleeSaves() |
| { |
| Base::emitRestoreCalleeSavesFor(&RegisterAtOffsetList::llintBaselineCalleeSaveRegisters()); |
| } |
| |
| #if ASSERT_ENABLED |
| MacroAssemblerCodeRef<JITThunkPtrTag> JIT::consistencyCheckGenerator(VM&) |
| { |
| CCallHelpers jit; |
| |
| constexpr GPRReg stackOffsetGPR = regT0; // Incoming |
| constexpr GPRReg expectedStackPointerGPR = regT1; |
| constexpr GPRReg expectedMetadataGPR = regT2; |
| constexpr GPRReg expectedConstantsGPR = regT3; |
| |
| jit.tagReturnAddress(); |
| |
| jit.mul32(TrustedImm32(sizeof(Register)), stackOffsetGPR, stackOffsetGPR); |
| jit.subPtr(callFrameRegister, stackOffsetGPR, expectedStackPointerGPR); |
| // Fix up in case the call sequence (from the op) changed the stack pointer, e.g.: like on x86 |
| if (constexpr size_t delta = sizeof(CallerFrameAndPC) - prologueStackPointerDelta()) |
| jit.subPtr(TrustedImm32(delta), expectedStackPointerGPR); |
| |
| jit.loadPtr(addressFor(CallFrameSlot::codeBlock), expectedConstantsGPR); |
| jit.loadPtr(Address(expectedConstantsGPR, CodeBlock::offsetOfMetadataTable()), expectedMetadataGPR); |
| jit.loadPtr(Address(expectedConstantsGPR, CodeBlock::offsetOfJITData()), expectedConstantsGPR); |
| |
| auto stackPointerOK = jit.branchPtr(Equal, expectedStackPointerGPR, stackPointerRegister); |
| jit.breakpoint(); |
| stackPointerOK.link(&jit); |
| |
| auto metadataOK = jit.branchPtr(Equal, expectedMetadataGPR, s_metadataGPR); |
| jit.breakpoint(); |
| metadataOK.link(&jit); |
| |
| auto constantsOK = jit.branchPtr(Equal, expectedConstantsGPR, s_constantsGPR); |
| jit.breakpoint(); |
| constantsOK.link(&jit); |
| |
| jit.ret(); |
| |
| LinkBuffer patchBuffer(jit, GLOBAL_THUNK_ID, LinkBuffer::Profile::ExtraCTIThunk); |
| return FINALIZE_THUNK(patchBuffer, JITThunkPtrTag, "Baseline: generateConsistencyCheck"); |
| } |
| |
| void JIT::emitConsistencyCheck() |
| { |
| ASSERT(!m_consistencyCheckLabel.isSet()); |
| m_consistencyCheckLabel = label(); |
| move(TrustedImm32(-stackPointerOffsetFor(m_unlinkedCodeBlock)), regT0); |
| m_bytecodeIndex = BytecodeIndex(0); |
| emitNakedNearTailCall(vm().getCTIStub(consistencyCheckGenerator).retaggedCode<NoPtrTag>()); |
| m_bytecodeIndex = BytecodeIndex(); // Reset this, in order to guard its use with ASSERTs. |
| } |
| #endif |
| |
| void JIT::compileAndLinkWithoutFinalizing(JITCompilationEffort effort) |
| { |
| DFG::CapabilityLevel level = m_profiledCodeBlock->capabilityLevel(); |
| switch (level) { |
| case DFG::CannotCompile: |
| m_canBeOptimized = false; |
| m_shouldEmitProfiling = false; |
| break; |
| case DFG::CanCompile: |
| case DFG::CanCompileAndInline: |
| m_canBeOptimized = true; |
| m_shouldEmitProfiling = true; |
| break; |
| default: |
| RELEASE_ASSERT_NOT_REACHED(); |
| break; |
| } |
| |
| if (m_unlinkedCodeBlock->numberOfUnlinkedSwitchJumpTables() || m_unlinkedCodeBlock->numberOfUnlinkedStringSwitchJumpTables()) { |
| if (m_unlinkedCodeBlock->numberOfUnlinkedSwitchJumpTables()) |
| m_switchJumpTables = FixedVector<SimpleJumpTable>(m_unlinkedCodeBlock->numberOfUnlinkedSwitchJumpTables()); |
| if (m_unlinkedCodeBlock->numberOfUnlinkedStringSwitchJumpTables()) |
| m_stringSwitchJumpTables = FixedVector<StringJumpTable>(m_unlinkedCodeBlock->numberOfUnlinkedStringSwitchJumpTables()); |
| } |
| |
| if (UNLIKELY(Options::dumpDisassembly() || (m_vm->m_perBytecodeProfiler && Options::disassembleBaselineForProfiler()))) { |
| // FIXME: build a disassembler off of UnlinkedCodeBlock. |
| m_disassembler = makeUnique<JITDisassembler>(m_profiledCodeBlock); |
| } |
| if (UNLIKELY(m_vm->m_perBytecodeProfiler)) { |
| // FIXME: build profiler disassembler off UnlinkedCodeBlock. |
| m_compilation = adoptRef( |
| new Profiler::Compilation( |
| m_vm->m_perBytecodeProfiler->ensureBytecodesFor(m_profiledCodeBlock), |
| Profiler::Baseline)); |
| m_compilation->addProfiledBytecodes(*m_vm->m_perBytecodeProfiler, m_profiledCodeBlock); |
| } |
| |
| m_pcToCodeOriginMapBuilder.appendItem(label(), CodeOrigin(BytecodeIndex(0))); |
| |
| std::optional<JITSizeStatistics::Marker> sizeMarker; |
| if (UNLIKELY(Options::dumpBaselineJITSizeStatistics())) |
| sizeMarker = m_vm->jitSizeStatistics->markStart("Baseline_prologue"_s, *this); |
| |
| Label entryLabel(this); |
| if (m_disassembler) |
| m_disassembler->setStartOfCode(entryLabel); |
| |
| // Just add a little bit of randomness to the codegen |
| if (random() & 1) |
| nop(); |
| |
| emitFunctionPrologue(); |
| jitAssertCodeBlockOnCallFrameWithType(regT2, JITType::BaselineJIT); |
| |
| Label beginLabel(this); |
| |
| int frameTopOffset = stackPointerOffsetFor(m_unlinkedCodeBlock) * sizeof(Register); |
| unsigned maxFrameSize = -frameTopOffset; |
| addPtr(TrustedImm32(frameTopOffset), callFrameRegister, regT1); |
| JumpList stackOverflow; |
| if (UNLIKELY(maxFrameSize > Options::reservedZoneSize())) |
| stackOverflow.append(branchPtr(Above, regT1, callFrameRegister)); |
| stackOverflow.append(branchPtr(Above, AbsoluteAddress(m_vm->addressOfSoftStackLimit()), regT1)); |
| |
| move(regT1, stackPointerRegister); |
| checkStackPointerAlignment(); |
| |
| emitSaveCalleeSaves(); |
| emitMaterializeTagCheckRegisters(); |
| emitMaterializeMetadataAndConstantPoolRegisters(); |
| |
| if (m_unlinkedCodeBlock->codeType() == FunctionCode) { |
| ASSERT(!m_bytecodeIndex); |
| if (shouldEmitProfiling() && (!m_unlinkedCodeBlock->isConstructor() || m_unlinkedCodeBlock->numParameters() > 1)) { |
| emitGetFromCallFrameHeaderPtr(CallFrameSlot::codeBlock, regT2); |
| loadPtr(Address(regT2, CodeBlock::offsetOfArgumentValueProfiles() + FixedVector<ValueProfile>::offsetOfStorage()), regT2); |
| |
| for (unsigned argument = 0; argument < m_unlinkedCodeBlock->numParameters(); ++argument) { |
| // If this is a constructor, then we want to put in a dummy profiling site (to |
| // keep things consistent) but we don't actually want to record the dummy value. |
| if (m_unlinkedCodeBlock->isConstructor() && !argument) |
| continue; |
| int offset = CallFrame::argumentOffsetIncludingThis(argument) * static_cast<int>(sizeof(Register)); |
| loadValue(Address(callFrameRegister, offset), jsRegT10); |
| storeValue(jsRegT10, Address(regT2, FixedVector<ValueProfile>::Storage::offsetOfData() + argument * sizeof(ValueProfile) + ValueProfile::offsetOfFirstBucket())); |
| } |
| } |
| } |
| |
| RELEASE_ASSERT(!JITCode::isJIT(m_profiledCodeBlock->jitType())); |
| |
| if (UNLIKELY(sizeMarker)) |
| m_vm->jitSizeStatistics->markEnd(WTFMove(*sizeMarker), *this); |
| |
| privateCompileMainPass(); |
| privateCompileLinkPass(); |
| privateCompileSlowCases(); |
| |
| if (m_disassembler) |
| m_disassembler->setEndOfSlowPath(label()); |
| m_pcToCodeOriginMapBuilder.appendItem(label(), PCToCodeOriginMapBuilder::defaultCodeOrigin()); |
| |
| #if ASSERT_ENABLED |
| emitConsistencyCheck(); |
| #endif |
| |
| stackOverflow.link(this); |
| m_bytecodeIndex = BytecodeIndex(0); |
| if (maxFrameExtentForSlowPathCall) |
| addPtr(TrustedImm32(-static_cast<int32_t>(maxFrameExtentForSlowPathCall)), stackPointerRegister); |
| emitGetFromCallFrameHeaderPtr(CallFrameSlot::codeBlock, regT0); |
| callOperationWithCallFrameRollbackOnException(operationThrowStackOverflowError, regT0); |
| |
| // If the number of parameters is 1, we never require arity fixup. |
| bool requiresArityFixup = m_unlinkedCodeBlock->numParameters() != 1; |
| if (m_unlinkedCodeBlock->codeType() == FunctionCode && requiresArityFixup) { |
| m_arityCheck = label(); |
| |
| emitFunctionPrologue(); |
| RELEASE_ASSERT(m_unlinkedCodeBlock->codeType() == FunctionCode); |
| jitAssertCodeBlockOnCallFrameWithType(regT2, JITType::BaselineJIT); |
| emitGetFromCallFrameHeaderPtr(CallFrameSlot::codeBlock, regT0); |
| store8(TrustedImm32(0), Address(regT0, CodeBlock::offsetOfShouldAlwaysBeInlined())); |
| |
| load32(payloadFor(CallFrameSlot::argumentCountIncludingThis), regT1); |
| branch32(AboveOrEqual, regT1, TrustedImm32(m_unlinkedCodeBlock->numParameters())).linkTo(beginLabel, this); |
| |
| m_bytecodeIndex = BytecodeIndex(0); |
| |
| if (maxFrameExtentForSlowPathCall) |
| addPtr(TrustedImm32(-static_cast<int32_t>(maxFrameExtentForSlowPathCall)), stackPointerRegister); |
| loadPtr(Address(regT0, CodeBlock::offsetOfGlobalObject()), argumentGPR0); |
| callOperationWithCallFrameRollbackOnException(m_unlinkedCodeBlock->isConstructor() ? operationConstructArityCheck : operationCallArityCheck, argumentGPR0); |
| if (maxFrameExtentForSlowPathCall) |
| addPtr(TrustedImm32(maxFrameExtentForSlowPathCall), stackPointerRegister); |
| branchTest32(Zero, returnValueGPR).linkTo(beginLabel, this); |
| move(returnValueGPR, GPRInfo::argumentGPR0); |
| emitNakedNearCall(m_vm->getCTIStub(arityFixupGenerator).retaggedCode<NoPtrTag>()); |
| |
| #if ASSERT_ENABLED |
| m_bytecodeIndex = BytecodeIndex(); // Reset this, in order to guard its use with ASSERTs. |
| #endif |
| |
| jump(beginLabel); |
| } else |
| m_arityCheck = entryLabel; // Never require arity fixup. |
| |
| ASSERT(m_jmpTable.isEmpty()); |
| |
| if (m_disassembler) |
| m_disassembler->setEndOfCode(label()); |
| m_pcToCodeOriginMapBuilder.appendItem(label(), PCToCodeOriginMapBuilder::defaultCodeOrigin()); |
| |
| m_linkBuffer = std::unique_ptr<LinkBuffer>(new LinkBuffer(*this, m_unlinkedCodeBlock, LinkBuffer::Profile::BaselineJIT, effort)); |
| link(); |
| } |
| |
| void JIT::link() |
| { |
| LinkBuffer& patchBuffer = *m_linkBuffer; |
| |
| if (patchBuffer.didFailToAllocate()) |
| return; |
| |
| // Translate vPC offsets into addresses in JIT generated code, for switch tables. |
| for (auto& record : m_switches) { |
| unsigned bytecodeOffset = record.bytecodeIndex.offset(); |
| unsigned tableIndex = record.tableIndex; |
| |
| switch (record.type) { |
| case SwitchRecord::Immediate: |
| case SwitchRecord::Character: { |
| const UnlinkedSimpleJumpTable& unlinkedTable = m_unlinkedCodeBlock->unlinkedSwitchJumpTable(tableIndex); |
| SimpleJumpTable& linkedTable = m_switchJumpTables[tableIndex]; |
| linkedTable.m_ctiDefault = patchBuffer.locationOf<JSSwitchPtrTag>(m_labels[bytecodeOffset + record.defaultOffset]); |
| for (unsigned j = 0; j < unlinkedTable.m_branchOffsets.size(); ++j) { |
| unsigned offset = unlinkedTable.m_branchOffsets[j]; |
| linkedTable.m_ctiOffsets[j] = offset |
| ? patchBuffer.locationOf<JSSwitchPtrTag>(m_labels[bytecodeOffset + offset]) |
| : linkedTable.m_ctiDefault; |
| } |
| break; |
| } |
| |
| case SwitchRecord::String: { |
| const UnlinkedStringJumpTable& unlinkedTable = m_unlinkedCodeBlock->unlinkedStringSwitchJumpTable(tableIndex); |
| StringJumpTable& linkedTable = m_stringSwitchJumpTables[tableIndex]; |
| auto ctiDefault = patchBuffer.locationOf<JSSwitchPtrTag>(m_labels[bytecodeOffset + record.defaultOffset]); |
| for (auto& location : unlinkedTable.m_offsetTable.values()) { |
| unsigned offset = location.m_branchOffset; |
| linkedTable.m_ctiOffsets[location.m_indexInTable] = offset |
| ? patchBuffer.locationOf<JSSwitchPtrTag>(m_labels[bytecodeOffset + offset]) |
| : ctiDefault; |
| } |
| linkedTable.m_ctiOffsets[unlinkedTable.m_offsetTable.size()] = ctiDefault; |
| break; |
| } |
| } |
| } |
| |
| if (!m_exceptionChecks.empty()) |
| patchBuffer.link(m_exceptionChecks, CodeLocationLabel(vm().getCTIStub(handleExceptionGenerator).retaggedCode<NoPtrTag>())); |
| if (!m_exceptionChecksWithCallFrameRollback.empty()) |
| patchBuffer.link(m_exceptionChecksWithCallFrameRollback, CodeLocationLabel(vm().getCTIStub(handleExceptionWithCallFrameRollbackGenerator).retaggedCode<NoPtrTag>())); |
| |
| for (auto& record : m_nearJumps) { |
| if (record.target) |
| patchBuffer.link(record.from, record.target); |
| } |
| for (auto& record : m_nearCalls) { |
| if (record.callee) |
| patchBuffer.link(record.from, record.callee); |
| } |
| for (auto& record : m_farCalls) { |
| if (record.callee) |
| patchBuffer.link(record.from, record.callee); |
| } |
| |
| #if ASSERT_ENABLED |
| const auto consistencyCheck = patchBuffer.locationOf<JSInternalPtrTag>(m_consistencyCheckLabel); |
| for (auto& call : m_consistencyCheckCalls) |
| patchBuffer.link<JSInternalPtrTag>(call, consistencyCheck); |
| #endif |
| |
| auto finalizeICs = [&] (auto& generators) { |
| for (auto& gen : generators) { |
| gen.m_unlinkedStubInfo->doneLocation = patchBuffer.locationOf<JSInternalPtrTag>(gen.m_done); |
| gen.m_unlinkedStubInfo->slowPathStartLocation = patchBuffer.locationOf<JITStubRoutinePtrTag>(gen.m_slowPathBegin); |
| } |
| }; |
| |
| finalizeICs(m_getByIds); |
| finalizeICs(m_getByVals); |
| finalizeICs(m_getByIdsWithThis); |
| finalizeICs(m_putByIds); |
| finalizeICs(m_putByVals); |
| finalizeICs(m_delByIds); |
| finalizeICs(m_delByVals); |
| finalizeICs(m_inByIds); |
| finalizeICs(m_inByVals); |
| finalizeICs(m_instanceOfs); |
| finalizeICs(m_privateBrandAccesses); |
| |
| for (auto& compilationInfo : m_callCompilationInfo) { |
| UnlinkedCallLinkInfo& info = *compilationInfo.unlinkedCallLinkInfo; |
| info.doneLocation = patchBuffer.locationOf<JSInternalPtrTag>(compilationInfo.doneLocation); |
| } |
| |
| JITCodeMapBuilder jitCodeMapBuilder; |
| for (unsigned bytecodeOffset = 0; bytecodeOffset < m_labels.size(); ++bytecodeOffset) { |
| if (m_labels[bytecodeOffset].isSet()) |
| jitCodeMapBuilder.append(BytecodeIndex(bytecodeOffset), patchBuffer.locationOf<JSEntryPtrTag>(m_labels[bytecodeOffset])); |
| } |
| |
| if (UNLIKELY(Options::dumpDisassembly())) { |
| m_disassembler->dump(patchBuffer); |
| patchBuffer.didAlreadyDisassemble(); |
| } |
| |
| if (UNLIKELY(m_compilation)) { |
| // FIXME: should we make the bytecode profiler know about UnlinkedCodeBlock? |
| if (Options::disassembleBaselineForProfiler()) |
| m_disassembler->reportToProfiler(m_compilation.get(), patchBuffer); |
| m_vm->m_perBytecodeProfiler->addCompilation(m_profiledCodeBlock, *m_compilation); |
| } |
| |
| if (m_pcToCodeOriginMapBuilder.didBuildMapping()) |
| m_pcToCodeOriginMap = makeUnique<PCToCodeOriginMap>(WTFMove(m_pcToCodeOriginMapBuilder), patchBuffer); |
| |
| // FIXME: Make a version of CodeBlockWithJITType that knows about UnlinkedCodeBlock. |
| CodeRef<JSEntryPtrTag> result = FINALIZE_CODE( |
| patchBuffer, JSEntryPtrTag, |
| "Baseline JIT code for %s", toCString(CodeBlockWithJITType(m_profiledCodeBlock, JITType::BaselineJIT)).data()); |
| |
| MacroAssemblerCodePtr<JSEntryPtrTag> withArityCheck = patchBuffer.locationOf<JSEntryPtrTag>(m_arityCheck); |
| m_jitCode = adoptRef(*new BaselineJITCode(result, withArityCheck)); |
| |
| m_jitCode->m_unlinkedCalls = FixedVector<UnlinkedCallLinkInfo>(m_unlinkedCalls.size()); |
| if (m_jitCode->m_unlinkedCalls.size()) |
| std::move(m_unlinkedCalls.begin(), m_unlinkedCalls.end(), m_jitCode->m_unlinkedCalls.begin()); |
| m_jitCode->m_unlinkedStubInfos = FixedVector<BaselineUnlinkedStructureStubInfo>(m_unlinkedStubInfos.size()); |
| if (m_jitCode->m_unlinkedStubInfos.size()) |
| std::move(m_unlinkedStubInfos.begin(), m_unlinkedStubInfos.end(), m_jitCode->m_unlinkedStubInfos.begin()); |
| m_jitCode->m_switchJumpTables = WTFMove(m_switchJumpTables); |
| m_jitCode->m_stringSwitchJumpTables = WTFMove(m_stringSwitchJumpTables); |
| m_jitCode->m_jitCodeMap = jitCodeMapBuilder.finalize(); |
| m_jitCode->adoptMathICs(m_mathICs); |
| m_jitCode->m_constantPool = WTFMove(m_constantPool); |
| m_jitCode->m_isShareable = m_isShareable; |
| |
| if (JITInternal::verbose) |
| dataLogF("JIT generated code for %p at [%p, %p).\n", m_unlinkedCodeBlock, result.executableMemory()->start().untaggedPtr(), result.executableMemory()->end().untaggedPtr()); |
| } |
| |
| CompilationResult JIT::finalizeOnMainThread(CodeBlock* codeBlock) |
| { |
| RELEASE_ASSERT(!isCompilationThread()); |
| |
| if (!m_jitCode) |
| return CompilationFailed; |
| |
| m_linkBuffer->runMainThreadFinalizationTasks(); |
| |
| if (m_pcToCodeOriginMap) |
| m_jitCode->m_pcToCodeOriginMap = WTFMove(m_pcToCodeOriginMap); |
| |
| m_vm->machineCodeBytesPerBytecodeWordForBaselineJIT->add( |
| static_cast<double>(m_jitCode->size()) / |
| static_cast<double>(m_unlinkedCodeBlock->instructionsSize())); |
| |
| codeBlock->setupWithUnlinkedBaselineCode(m_jitCode.releaseNonNull()); |
| |
| return CompilationSuccessful; |
| } |
| |
| size_t JIT::codeSize() const |
| { |
| if (!m_linkBuffer) |
| return 0; |
| return m_linkBuffer->size(); |
| } |
| |
| CompilationResult JIT::privateCompile(CodeBlock* codeBlock, JITCompilationEffort effort) |
| { |
| doMainThreadPreparationBeforeCompile(); |
| compileAndLinkWithoutFinalizing(effort); |
| return finalizeOnMainThread(codeBlock); |
| } |
| |
| void JIT::doMainThreadPreparationBeforeCompile() |
| { |
| // This ensures that we have the most up to date type information when performing typecheck optimizations for op_profile_type. |
| if (m_vm->typeProfiler()) |
| m_vm->typeProfilerLog()->processLogEntries(*m_vm, "Preparing for JIT compilation."_s); |
| } |
| |
| unsigned JIT::frameRegisterCountFor(UnlinkedCodeBlock* codeBlock) |
| { |
| ASSERT(static_cast<unsigned>(codeBlock->numCalleeLocals()) == WTF::roundUpToMultipleOf(stackAlignmentRegisters(), static_cast<unsigned>(codeBlock->numCalleeLocals()))); |
| |
| return roundLocalRegisterCountForFramePointerOffset(codeBlock->numCalleeLocals() + maxFrameExtentForSlowPathCallInRegisters); |
| } |
| |
| unsigned JIT::frameRegisterCountFor(CodeBlock* codeBlock) |
| { |
| return frameRegisterCountFor(codeBlock->unlinkedCodeBlock()); |
| } |
| |
| int JIT::stackPointerOffsetFor(UnlinkedCodeBlock* codeBlock) |
| { |
| return virtualRegisterForLocal(frameRegisterCountFor(codeBlock) - 1).offset(); |
| } |
| |
| int JIT::stackPointerOffsetFor(CodeBlock* codeBlock) |
| { |
| return stackPointerOffsetFor(codeBlock->unlinkedCodeBlock()); |
| } |
| |
| HashMap<CString, Seconds> JIT::compileTimeStats() |
| { |
| HashMap<CString, Seconds> result; |
| if (Options::reportTotalCompileTimes()) { |
| result.add("Total Compile Time", totalCompileTime()); |
| result.add("Baseline Compile Time", totalBaselineCompileTime); |
| #if ENABLE(DFG_JIT) |
| result.add("DFG Compile Time", totalDFGCompileTime); |
| #if ENABLE(FTL_JIT) |
| result.add("FTL Compile Time", totalFTLCompileTime); |
| result.add("FTL (DFG) Compile Time", totalFTLDFGCompileTime); |
| result.add("FTL (B3) Compile Time", totalFTLB3CompileTime); |
| #endif // ENABLE(FTL_JIT) |
| #endif // ENABLE(DFG_JIT) |
| } |
| return result; |
| } |
| |
| Seconds JIT::totalCompileTime() |
| { |
| return totalBaselineCompileTime + totalDFGCompileTime + totalFTLCompileTime; |
| } |
| |
| } // namespace JSC |
| |
| #endif // ENABLE(JIT) |
