/*
- * Copyright (C) 2008, 2009 Apple Inc. All rights reserved.
+ * Copyright (C) 2008, 2009, 2012, 2013, 2014 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
#include "config.h"
#if ENABLE(JIT)
+
#include "JIT.h"
// This probably does not belong here; adding here for now as a quick Windows build fix.
JSC::MacroAssemblerX86Common::SSE2CheckState JSC::MacroAssemblerX86Common::s_sse2CheckState = NotCheckedSSE2;
#endif
+#include "ArityCheckFailReturnThunks.h"
#include "CodeBlock.h"
-#include <wtf/CryptographicallyRandomNumber.h>
-#include "DFGNode.h" // for DFG_SUCCESS_STATS
+#include "DFGCapabilities.h"
#include "Interpreter.h"
-#include "JITInlineMethods.h"
-#include "JITStubCall.h"
+#include "JITInlines.h"
+#include "JITOperations.h"
#include "JSArray.h"
#include "JSFunction.h"
#include "LinkBuffer.h"
+#include "MaxFrameExtentForSlowPathCall.h"
+#include "JSCInlines.h"
+#include "ProfilerDatabase.h"
#include "RepatchBuffer.h"
#include "ResultType.h"
#include "SamplingTool.h"
+#include "SlowPathCall.h"
+#include "StackAlignment.h"
+#include <wtf/CryptographicallyRandomNumber.h>
using namespace std;
repatchBuffer.relinkCallerToFunction(returnAddress, newCalleeFunction);
}
-JIT::JIT(JSGlobalData* globalData, CodeBlock* codeBlock)
- : m_interpreter(globalData->interpreter)
- , m_globalData(globalData)
- , m_codeBlock(codeBlock)
+JIT::JIT(VM* vm, CodeBlock* codeBlock)
+ : JSInterfaceJIT(vm, codeBlock)
+ , m_interpreter(vm->interpreter)
, m_labels(codeBlock ? codeBlock->numberOfInstructions() : 0)
, m_bytecodeOffset((unsigned)-1)
-#if USE(JSVALUE32_64)
- , m_jumpTargetIndex(0)
- , m_mappedBytecodeOffset((unsigned)-1)
- , m_mappedVirtualRegisterIndex(RegisterFile::ReturnPC)
- , m_mappedTag((RegisterID)-1)
- , m_mappedPayload((RegisterID)-1)
-#else
- , m_lastResultBytecodeRegister(std::numeric_limits<int>::max())
- , m_jumpTargetsPosition(0)
-#endif
-#if USE(OS_RANDOMNESS)
+ , m_getByIdIndex(UINT_MAX)
+ , m_putByIdIndex(UINT_MAX)
+ , m_byValInstructionIndex(UINT_MAX)
+ , m_callLinkInfoIndex(UINT_MAX)
, m_randomGenerator(cryptographicallyRandomNumber())
-#else
- , m_randomGenerator(static_cast<unsigned>(randomNumber() * 0xFFFFFFF))
-#endif
+ , m_canBeOptimized(false)
+ , m_shouldEmitProfiling(false)
{
}
#if ENABLE(DFG_JIT)
-void JIT::emitOptimizationCheck(OptimizationCheckKind kind)
+void JIT::emitEnterOptimizationCheck()
{
- if (!shouldEmitProfiling())
+ if (!canBeOptimized())
return;
+
+ JumpList skipOptimize;
- Jump skipOptimize = branchAdd32(Signed, TrustedImm32(kind == LoopOptimizationCheck ? Options::executionCounterIncrementForLoop : Options::executionCounterIncrementForReturn), AbsoluteAddress(m_codeBlock->addressOfJITExecuteCounter()));
- JITStubCall stubCall(this, kind == LoopOptimizationCheck ? cti_optimize_from_loop : cti_optimize_from_ret);
- if (kind == LoopOptimizationCheck)
- stubCall.addArgument(TrustedImm32(m_bytecodeOffset));
- stubCall.call();
+ skipOptimize.append(branchAdd32(Signed, TrustedImm32(Options::executionCounterIncrementForEntry()), AbsoluteAddress(m_codeBlock->addressOfJITExecuteCounter())));
+ ASSERT(!m_bytecodeOffset);
+ callOperation(operationOptimize, m_bytecodeOffset);
+ skipOptimize.append(branchTestPtr(Zero, returnValueGPR));
+ move(returnValueGPR2, stackPointerRegister);
+ jump(returnValueGPR);
skipOptimize.link(this);
}
#endif
-#if CPU(X86)
-void JIT::emitTimeoutCheck()
-{
- Jump skipTimeout = branchSub32(NonZero, TrustedImm32(1), AbsoluteAddress(&m_globalData->m_timeoutCount));
- JITStubCall stubCall(this, cti_timeout_check);
- stubCall.addArgument(regT1, regT0); // save last result registers.
- stubCall.call(regT0);
- store32(regT0, &m_globalData->m_timeoutCount);
- stubCall.getArgument(0, regT1, regT0); // reload last result registers.
- skipTimeout.link(this);
-}
-#elif USE(JSVALUE32_64)
-void JIT::emitTimeoutCheck()
-{
- Jump skipTimeout = branchSub32(NonZero, TrustedImm32(1), timeoutCheckRegister);
- JITStubCall stubCall(this, cti_timeout_check);
- stubCall.addArgument(regT1, regT0); // save last result registers.
- stubCall.call(timeoutCheckRegister);
- stubCall.getArgument(0, regT1, regT0); // reload last result registers.
- skipTimeout.link(this);
-}
-#else
-void JIT::emitTimeoutCheck()
-{
- Jump skipTimeout = branchSub32(NonZero, TrustedImm32(1), timeoutCheckRegister);
- JITStubCall(this, cti_timeout_check).call(timeoutCheckRegister);
- skipTimeout.link(this);
-
- killLastResultRegister();
-}
-#endif
-
#define NEXT_OPCODE(name) \
m_bytecodeOffset += OPCODE_LENGTH(name); \
break;
-#if USE(JSVALUE32_64)
-#define DEFINE_BINARY_OP(name) \
- case name: { \
- JITStubCall stubCall(this, cti_##name); \
- stubCall.addArgument(currentInstruction[2].u.operand); \
- stubCall.addArgument(currentInstruction[3].u.operand); \
- stubCall.call(currentInstruction[1].u.operand); \
- NEXT_OPCODE(name); \
- }
-
-#define DEFINE_UNARY_OP(name) \
- case name: { \
- JITStubCall stubCall(this, cti_##name); \
- stubCall.addArgument(currentInstruction[2].u.operand); \
- stubCall.call(currentInstruction[1].u.operand); \
- NEXT_OPCODE(name); \
- }
-
-#else // USE(JSVALUE32_64)
-
-#define DEFINE_BINARY_OP(name) \
- case name: { \
- JITStubCall stubCall(this, cti_##name); \
- stubCall.addArgument(currentInstruction[2].u.operand, regT2); \
- stubCall.addArgument(currentInstruction[3].u.operand, regT2); \
- stubCall.call(currentInstruction[1].u.operand); \
- NEXT_OPCODE(name); \
+#define DEFINE_SLOW_OP(name) \
+ case op_##name: { \
+ JITSlowPathCall slowPathCall(this, currentInstruction, slow_path_##name); \
+ slowPathCall.call(); \
+ NEXT_OPCODE(op_##name); \
}
-#define DEFINE_UNARY_OP(name) \
- case name: { \
- JITStubCall stubCall(this, cti_##name); \
- stubCall.addArgument(currentInstruction[2].u.operand, regT2); \
- stubCall.call(currentInstruction[1].u.operand); \
- NEXT_OPCODE(name); \
- }
-#endif // USE(JSVALUE32_64)
-
#define DEFINE_OP(name) \
case name: { \
emit_##name(currentInstruction); \
void JIT::privateCompileMainPass()
{
+ jitAssertTagsInPlace();
+ jitAssertArgumentCountSane();
+
Instruction* instructionsBegin = m_codeBlock->instructions().begin();
unsigned instructionCount = m_codeBlock->instructions().size();
- m_globalResolveInfoIndex = 0;
m_callLinkInfoIndex = 0;
for (m_bytecodeOffset = 0; m_bytecodeOffset < instructionCount; ) {
+ if (m_disassembler)
+ m_disassembler->setForBytecodeMainPath(m_bytecodeOffset, label());
Instruction* currentInstruction = instructionsBegin + m_bytecodeOffset;
ASSERT_WITH_MESSAGE(m_interpreter->isOpcode(currentInstruction->u.opcode), "privateCompileMainPass gone bad @ %d", m_bytecodeOffset);
sampleInstruction(currentInstruction);
#endif
-#if USE(JSVALUE64)
- if (atJumpTarget())
- killLastResultRegister();
-#endif
-
m_labels[m_bytecodeOffset] = label();
#if ENABLE(JIT_VERBOSE)
- dataLog("Old JIT emitting code for bc#%u at offset 0x%lx.\n", m_bytecodeOffset, (long)debugOffset());
+ dataLogF("Old JIT emitting code for bc#%u at offset 0x%lx.\n", m_bytecodeOffset, (long)debugOffset());
#endif
+
+ OpcodeID opcodeID = m_interpreter->getOpcodeID(currentInstruction->u.opcode);
- switch (m_interpreter->getOpcodeID(currentInstruction->u.opcode)) {
- DEFINE_BINARY_OP(op_del_by_val)
- DEFINE_BINARY_OP(op_in)
- DEFINE_BINARY_OP(op_less)
- DEFINE_BINARY_OP(op_lesseq)
- DEFINE_BINARY_OP(op_greater)
- DEFINE_BINARY_OP(op_greatereq)
- DEFINE_UNARY_OP(op_is_function)
- DEFINE_UNARY_OP(op_is_object)
- DEFINE_UNARY_OP(op_typeof)
-
+ if (m_compilation) {
+ add64(
+ TrustedImm32(1),
+ AbsoluteAddress(m_compilation->executionCounterFor(Profiler::OriginStack(Profiler::Origin(
+ m_compilation->bytecodes(), m_bytecodeOffset)))->address()));
+ }
+
+ if (Options::eagerlyUpdateTopCallFrame())
+ updateTopCallFrame();
+
+ switch (opcodeID) {
+ DEFINE_SLOW_OP(del_by_val)
+ DEFINE_SLOW_OP(in)
+ DEFINE_SLOW_OP(less)
+ DEFINE_SLOW_OP(lesseq)
+ DEFINE_SLOW_OP(greater)
+ DEFINE_SLOW_OP(greatereq)
+ DEFINE_SLOW_OP(is_function)
+ DEFINE_SLOW_OP(is_object)
+ DEFINE_SLOW_OP(typeof)
+
+ DEFINE_OP(op_touch_entry)
DEFINE_OP(op_add)
DEFINE_OP(op_bitand)
DEFINE_OP(op_bitor)
DEFINE_OP(op_call)
DEFINE_OP(op_call_eval)
DEFINE_OP(op_call_varargs)
+ DEFINE_OP(op_construct_varargs)
DEFINE_OP(op_catch)
DEFINE_OP(op_construct)
DEFINE_OP(op_get_callee)
DEFINE_OP(op_create_this)
- DEFINE_OP(op_convert_this)
+ DEFINE_OP(op_to_this)
DEFINE_OP(op_init_lazy_reg)
DEFINE_OP(op_create_arguments)
DEFINE_OP(op_debug)
DEFINE_OP(op_create_activation)
DEFINE_OP(op_eq)
DEFINE_OP(op_eq_null)
+ case op_get_by_id_out_of_line:
+ case op_get_array_length:
DEFINE_OP(op_get_by_id)
DEFINE_OP(op_get_arguments_length)
DEFINE_OP(op_get_by_val)
DEFINE_OP(op_get_argument_by_val)
DEFINE_OP(op_get_by_pname)
- DEFINE_OP(op_get_global_var)
DEFINE_OP(op_get_pnames)
- DEFINE_OP(op_get_scoped_var)
DEFINE_OP(op_check_has_instance)
DEFINE_OP(op_instanceof)
DEFINE_OP(op_is_undefined)
DEFINE_OP(op_jeq_null)
DEFINE_OP(op_jfalse)
DEFINE_OP(op_jmp)
- DEFINE_OP(op_jmp_scopes)
DEFINE_OP(op_jneq_null)
DEFINE_OP(op_jneq_ptr)
DEFINE_OP(op_jless)
DEFINE_OP(op_jngreater)
DEFINE_OP(op_jngreatereq)
DEFINE_OP(op_jtrue)
- DEFINE_OP(op_loop)
DEFINE_OP(op_loop_hint)
- DEFINE_OP(op_loop_if_less)
- DEFINE_OP(op_loop_if_lesseq)
- DEFINE_OP(op_loop_if_greater)
- DEFINE_OP(op_loop_if_greatereq)
- DEFINE_OP(op_loop_if_true)
- DEFINE_OP(op_loop_if_false)
DEFINE_OP(op_lshift)
- DEFINE_OP(op_method_check)
DEFINE_OP(op_mod)
+ DEFINE_OP(op_captured_mov)
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_array_buffer)
DEFINE_OP(op_new_func)
+ DEFINE_OP(op_new_captured_func)
DEFINE_OP(op_new_func_exp)
DEFINE_OP(op_new_object)
DEFINE_OP(op_new_regexp)
DEFINE_OP(op_not)
DEFINE_OP(op_nstricteq)
DEFINE_OP(op_pop_scope)
- DEFINE_OP(op_post_dec)
- DEFINE_OP(op_post_inc)
- DEFINE_OP(op_pre_dec)
- DEFINE_OP(op_pre_inc)
+ DEFINE_OP(op_dec)
+ DEFINE_OP(op_inc)
DEFINE_OP(op_profile_did_call)
DEFINE_OP(op_profile_will_call)
- DEFINE_OP(op_push_new_scope)
- DEFINE_OP(op_push_scope)
+ DEFINE_OP(op_push_name_scope)
+ DEFINE_OP(op_push_with_scope)
+ case op_put_by_id_out_of_line:
case op_put_by_id_transition_direct:
case op_put_by_id_transition_normal:
+ case op_put_by_id_transition_direct_out_of_line:
+ case op_put_by_id_transition_normal_out_of_line:
DEFINE_OP(op_put_by_id)
DEFINE_OP(op_put_by_index)
+ case op_put_by_val_direct:
DEFINE_OP(op_put_by_val)
DEFINE_OP(op_put_getter_setter)
- DEFINE_OP(op_put_global_var)
- DEFINE_OP(op_put_scoped_var)
- DEFINE_OP(op_resolve)
- DEFINE_OP(op_resolve_base)
- DEFINE_OP(op_ensure_property_exists)
- DEFINE_OP(op_resolve_global)
- DEFINE_OP(op_resolve_global_dynamic)
- DEFINE_OP(op_resolve_skip)
- DEFINE_OP(op_resolve_with_base)
- DEFINE_OP(op_resolve_with_this)
+ case op_init_global_const_nop:
+ NEXT_OPCODE(op_init_global_const_nop);
+ DEFINE_OP(op_init_global_const)
+
DEFINE_OP(op_ret)
- DEFINE_OP(op_call_put_result)
DEFINE_OP(op_ret_object_or_this)
DEFINE_OP(op_rshift)
+ DEFINE_OP(op_unsigned)
DEFINE_OP(op_urshift)
DEFINE_OP(op_strcat)
DEFINE_OP(op_stricteq)
DEFINE_OP(op_tear_off_activation)
DEFINE_OP(op_tear_off_arguments)
DEFINE_OP(op_throw)
- DEFINE_OP(op_throw_reference_error)
- DEFINE_OP(op_to_jsnumber)
+ DEFINE_OP(op_throw_static_error)
+ DEFINE_OP(op_to_number)
DEFINE_OP(op_to_primitive)
- case op_get_array_length:
- case op_get_by_id_chain:
- case op_get_by_id_generic:
- case op_get_by_id_proto:
- case op_get_by_id_self:
- case op_get_by_id_getter_chain:
- case op_get_by_id_getter_proto:
- case op_get_by_id_getter_self:
- case op_get_by_id_custom_chain:
- case op_get_by_id_custom_proto:
- case op_get_by_id_custom_self:
- case op_get_string_length:
- case op_put_by_id_generic:
- case op_put_by_id_replace:
- case op_put_by_id_transition:
- ASSERT_NOT_REACHED();
+ DEFINE_OP(op_resolve_scope)
+ DEFINE_OP(op_get_from_scope)
+ DEFINE_OP(op_put_to_scope)
+ default:
+ RELEASE_ASSERT_NOT_REACHED();
}
}
- ASSERT(m_callLinkInfoIndex == m_callStructureStubCompilationInfo.size());
+ RELEASE_ASSERT(m_callLinkInfoIndex == m_callCompilationInfo.size());
#ifndef NDEBUG
// Reset this, in order to guard its use with ASSERTs.
{
Instruction* instructionsBegin = m_codeBlock->instructions().begin();
- m_propertyAccessInstructionIndex = 0;
- m_globalResolveInfoIndex = 0;
+ m_getByIdIndex = 0;
+ m_putByIdIndex = 0;
+ m_byValInstructionIndex = 0;
m_callLinkInfoIndex = 0;
-#if !ASSERT_DISABLED && ENABLE(VALUE_PROFILER)
// Use this to assert that slow-path code associates new profiling sites with existing
// ValueProfiles rather than creating new ones. This ensures that for a given instruction
// (say, get_by_id) we get combined statistics for both the fast-path executions of that
// new ValueProfiles then the ValueProfiles would no longer be sorted by bytecode offset,
// which would break the invariant necessary to use CodeBlock::valueProfileForBytecodeOffset().
unsigned numberOfValueProfiles = m_codeBlock->numberOfValueProfiles();
-#endif
for (Vector<SlowCaseEntry>::iterator iter = m_slowCases.begin(); iter != m_slowCases.end();) {
-#if USE(JSVALUE64)
- killLastResultRegister();
-#endif
-
m_bytecodeOffset = iter->to;
-#ifndef NDEBUG
+
unsigned firstTo = m_bytecodeOffset;
-#endif
+
Instruction* currentInstruction = instructionsBegin + m_bytecodeOffset;
-#if ENABLE(VALUE_PROFILER)
RareCaseProfile* rareCaseProfile = 0;
- if (m_canBeOptimized)
+ if (shouldEmitProfiling())
rareCaseProfile = m_codeBlock->addRareCaseProfile(m_bytecodeOffset);
-#endif
#if ENABLE(JIT_VERBOSE)
- dataLog("Old JIT emitting slow code for bc#%u at offset 0x%lx.\n", m_bytecodeOffset, (long)debugOffset());
+ dataLogF("Old JIT emitting slow code for bc#%u at offset 0x%lx.\n", m_bytecodeOffset, (long)debugOffset());
#endif
+
+ if (m_disassembler)
+ m_disassembler->setForBytecodeSlowPath(m_bytecodeOffset, label());
switch (m_interpreter->getOpcodeID(currentInstruction->u.opcode)) {
DEFINE_SLOWCASE_OP(op_add)
DEFINE_SLOWCASE_OP(op_call)
DEFINE_SLOWCASE_OP(op_call_eval)
DEFINE_SLOWCASE_OP(op_call_varargs)
+ DEFINE_SLOWCASE_OP(op_construct_varargs)
DEFINE_SLOWCASE_OP(op_construct)
- DEFINE_SLOWCASE_OP(op_convert_this)
+ DEFINE_SLOWCASE_OP(op_to_this)
DEFINE_SLOWCASE_OP(op_create_this)
+ DEFINE_SLOWCASE_OP(op_captured_mov)
DEFINE_SLOWCASE_OP(op_div)
DEFINE_SLOWCASE_OP(op_eq)
+ DEFINE_SLOWCASE_OP(op_get_callee)
+ case op_get_by_id_out_of_line:
+ case op_get_array_length:
DEFINE_SLOWCASE_OP(op_get_by_id)
DEFINE_SLOWCASE_OP(op_get_arguments_length)
DEFINE_SLOWCASE_OP(op_get_by_val)
DEFINE_SLOWCASE_OP(op_jngreater)
DEFINE_SLOWCASE_OP(op_jngreatereq)
DEFINE_SLOWCASE_OP(op_jtrue)
- DEFINE_SLOWCASE_OP(op_loop_if_less)
- DEFINE_SLOWCASE_OP(op_loop_if_lesseq)
- DEFINE_SLOWCASE_OP(op_loop_if_greater)
- DEFINE_SLOWCASE_OP(op_loop_if_greatereq)
- DEFINE_SLOWCASE_OP(op_loop_if_true)
- DEFINE_SLOWCASE_OP(op_loop_if_false)
+ DEFINE_SLOWCASE_OP(op_loop_hint)
DEFINE_SLOWCASE_OP(op_lshift)
- DEFINE_SLOWCASE_OP(op_method_check)
DEFINE_SLOWCASE_OP(op_mod)
DEFINE_SLOWCASE_OP(op_mul)
DEFINE_SLOWCASE_OP(op_negate)
DEFINE_SLOWCASE_OP(op_neq)
- DEFINE_SLOWCASE_OP(op_new_array)
DEFINE_SLOWCASE_OP(op_new_object)
- DEFINE_SLOWCASE_OP(op_new_func)
- DEFINE_SLOWCASE_OP(op_new_func_exp)
DEFINE_SLOWCASE_OP(op_not)
DEFINE_SLOWCASE_OP(op_nstricteq)
- DEFINE_SLOWCASE_OP(op_post_dec)
- DEFINE_SLOWCASE_OP(op_post_inc)
- DEFINE_SLOWCASE_OP(op_pre_dec)
- DEFINE_SLOWCASE_OP(op_pre_inc)
+ DEFINE_SLOWCASE_OP(op_dec)
+ DEFINE_SLOWCASE_OP(op_inc)
+ case op_put_by_id_out_of_line:
case op_put_by_id_transition_direct:
case op_put_by_id_transition_normal:
+ case op_put_by_id_transition_direct_out_of_line:
+ case op_put_by_id_transition_normal_out_of_line:
DEFINE_SLOWCASE_OP(op_put_by_id)
+ case op_put_by_val_direct:
DEFINE_SLOWCASE_OP(op_put_by_val)
- DEFINE_SLOWCASE_OP(op_resolve_global)
- DEFINE_SLOWCASE_OP(op_resolve_global_dynamic)
DEFINE_SLOWCASE_OP(op_rshift)
+ DEFINE_SLOWCASE_OP(op_unsigned)
DEFINE_SLOWCASE_OP(op_urshift)
DEFINE_SLOWCASE_OP(op_stricteq)
DEFINE_SLOWCASE_OP(op_sub)
- DEFINE_SLOWCASE_OP(op_to_jsnumber)
+ DEFINE_SLOWCASE_OP(op_to_number)
DEFINE_SLOWCASE_OP(op_to_primitive)
+
+ DEFINE_SLOWCASE_OP(op_resolve_scope)
+ DEFINE_SLOWCASE_OP(op_get_from_scope)
+ DEFINE_SLOWCASE_OP(op_put_to_scope)
+
default:
- ASSERT_NOT_REACHED();
+ RELEASE_ASSERT_NOT_REACHED();
}
- ASSERT_WITH_MESSAGE(iter == m_slowCases.end() || firstTo != iter->to,"Not enough jumps linked in slow case codegen.");
- ASSERT_WITH_MESSAGE(firstTo == (iter - 1)->to, "Too many jumps linked in slow case codegen.");
+ RELEASE_ASSERT_WITH_MESSAGE(iter == m_slowCases.end() || firstTo != iter->to, "Not enough jumps linked in slow case codegen.");
+ RELEASE_ASSERT_WITH_MESSAGE(firstTo == (iter - 1)->to, "Too many jumps linked in slow case codegen.");
-#if ENABLE(VALUE_PROFILER)
- if (m_canBeOptimized)
+ if (shouldEmitProfiling())
add32(TrustedImm32(1), AbsoluteAddress(&rareCaseProfile->m_counter));
-#endif
emitJumpSlowToHot(jump(), 0);
}
- ASSERT(m_propertyAccessInstructionIndex == m_propertyAccessCompilationInfo.size());
- ASSERT(m_callLinkInfoIndex == m_callStructureStubCompilationInfo.size());
-#if ENABLE(VALUE_PROFILER)
- ASSERT(numberOfValueProfiles == m_codeBlock->numberOfValueProfiles());
-#endif
+ RELEASE_ASSERT(m_getByIdIndex == m_getByIds.size());
+ RELEASE_ASSERT(m_putByIdIndex == m_putByIds.size());
+ RELEASE_ASSERT(m_callLinkInfoIndex == m_callCompilationInfo.size());
+ RELEASE_ASSERT(numberOfValueProfiles == m_codeBlock->numberOfValueProfiles());
#ifndef NDEBUG
// Reset this, in order to guard its use with ASSERTs.
#endif
}
-ALWAYS_INLINE void PropertyStubCompilationInfo::copyToStubInfo(StructureStubInfo& info, LinkBuffer &linkBuffer)
+CompilationResult JIT::privateCompile(JITCompilationEffort effort)
{
- ASSERT(bytecodeIndex != std::numeric_limits<unsigned>::max());
- info.bytecodeIndex = bytecodeIndex;
- info.callReturnLocation = linkBuffer.locationOf(callReturnLocation);
- info.hotPathBegin = linkBuffer.locationOf(hotPathBegin);
-
- switch (m_type) {
- case MethodCheck: {
- CodeLocationDataLabelPtr structureToCompareLocation = linkBuffer.locationOf(methodCheckStructureToCompare);
- info.patch.baseline.methodCheckProtoObj = MacroAssembler::differenceBetweenCodePtr(structureToCompareLocation, linkBuffer.locationOf(methodCheckProtoObj));
- info.patch.baseline.methodCheckProtoStructureToCompare = MacroAssembler::differenceBetweenCodePtr(structureToCompareLocation, linkBuffer.locationOf(methodCheckProtoStructureToCompare));
- info.patch.baseline.methodCheckPutFunction = MacroAssembler::differenceBetweenCodePtr(structureToCompareLocation, linkBuffer.locationOf(methodCheckPutFunction));
- // No break - fall through to GetById.
- }
- case GetById: {
- CodeLocationLabel hotPathBeginLocation = linkBuffer.locationOf(hotPathBegin);
- info.patch.baseline.u.get.structureToCompare = MacroAssembler::differenceBetweenCodePtr(hotPathBeginLocation, linkBuffer.locationOf(getStructureToCompare));
- info.patch.baseline.u.get.structureCheck = MacroAssembler::differenceBetweenCodePtr(hotPathBeginLocation, linkBuffer.locationOf(getStructureCheck));
-#if USE(JSVALUE64)
- info.patch.baseline.u.get.displacementLabel = MacroAssembler::differenceBetweenCodePtr(hotPathBeginLocation, linkBuffer.locationOf(getDisplacementLabel));
-#else
- info.patch.baseline.u.get.displacementLabel1 = MacroAssembler::differenceBetweenCodePtr(hotPathBeginLocation, linkBuffer.locationOf(getDisplacementLabel1));
- info.patch.baseline.u.get.displacementLabel2 = MacroAssembler::differenceBetweenCodePtr(hotPathBeginLocation, linkBuffer.locationOf(getDisplacementLabel2));
-#endif
- info.patch.baseline.u.get.putResult = MacroAssembler::differenceBetweenCodePtr(hotPathBeginLocation, linkBuffer.locationOf(getPutResult));
- info.patch.baseline.u.get.coldPathBegin = MacroAssembler::differenceBetweenCodePtr(linkBuffer.locationOf(getColdPathBegin), linkBuffer.locationOf(callReturnLocation));
+ DFG::CapabilityLevel level = m_codeBlock->capabilityLevel();
+ switch (level) {
+ case DFG::CannotCompile:
+ m_canBeOptimized = false;
+ m_canBeOptimizedOrInlined = false;
+ m_shouldEmitProfiling = false;
+ break;
+ case DFG::CanInline:
+ m_canBeOptimized = false;
+ m_canBeOptimizedOrInlined = true;
+ m_shouldEmitProfiling = true;
+ break;
+ case DFG::CanCompile:
+ case DFG::CanCompileAndInline:
+ m_canBeOptimized = true;
+ m_canBeOptimizedOrInlined = true;
+ m_shouldEmitProfiling = true;
+ break;
+ default:
+ RELEASE_ASSERT_NOT_REACHED();
break;
}
- case PutById:
- CodeLocationLabel hotPathBeginLocation = linkBuffer.locationOf(hotPathBegin);
- info.patch.baseline.u.put.structureToCompare = MacroAssembler::differenceBetweenCodePtr(hotPathBeginLocation, linkBuffer.locationOf(putStructureToCompare));
-#if USE(JSVALUE64)
- info.patch.baseline.u.put.displacementLabel = MacroAssembler::differenceBetweenCodePtr(hotPathBeginLocation, linkBuffer.locationOf(putDisplacementLabel));
-#else
- info.patch.baseline.u.put.displacementLabel1 = MacroAssembler::differenceBetweenCodePtr(hotPathBeginLocation, linkBuffer.locationOf(putDisplacementLabel1));
- info.patch.baseline.u.put.displacementLabel2 = MacroAssembler::differenceBetweenCodePtr(hotPathBeginLocation, linkBuffer.locationOf(putDisplacementLabel2));
-#endif
+
+ switch (m_codeBlock->codeType()) {
+ case GlobalCode:
+ case EvalCode:
+ m_codeBlock->m_shouldAlwaysBeInlined = false;
+ break;
+ case FunctionCode:
+ // We could have already set it to false because we detected an uninlineable call.
+ // Don't override that observation.
+ m_codeBlock->m_shouldAlwaysBeInlined &= canInline(level) && DFG::mightInlineFunction(m_codeBlock);
break;
}
-}
-
-JITCode JIT::privateCompile(CodePtr* functionEntryArityCheck, JITCompilationEffort effort)
-{
-#if ENABLE(JIT_VERBOSE_OSR)
- printf("Compiling JIT code!\n");
-#endif
-#if ENABLE(VALUE_PROFILER)
- m_canBeOptimized = m_codeBlock->canCompileWithDFG();
-#endif
+ if (Options::showDisassembly() || m_vm->m_perBytecodeProfiler)
+ m_disassembler = adoptPtr(new JITDisassembler(m_codeBlock));
+ if (m_vm->m_perBytecodeProfiler) {
+ m_compilation = adoptRef(
+ new Profiler::Compilation(
+ m_vm->m_perBytecodeProfiler->ensureBytecodesFor(m_codeBlock),
+ Profiler::Baseline));
+ m_compilation->addProfiledBytecodes(*m_vm->m_perBytecodeProfiler, m_codeBlock);
+ }
+
+ if (m_disassembler)
+ m_disassembler->setStartOfCode(label());
// Just add a little bit of randomness to the codegen
if (m_randomGenerator.getUint32() & 1)
nop();
- preserveReturnAddressAfterCall(regT2);
- emitPutToCallFrameHeader(regT2, RegisterFile::ReturnPC);
- emitPutImmediateToCallFrameHeader(m_codeBlock, RegisterFile::CodeBlock);
+ emitFunctionPrologue();
+ emitPutImmediateToCallFrameHeader(m_codeBlock, JSStack::CodeBlock);
Label beginLabel(this);
sampleInstruction(m_codeBlock->instructions().begin());
#endif
- Jump registerFileCheck;
+ Jump stackOverflow;
if (m_codeBlock->codeType() == FunctionCode) {
-#if ENABLE(DFG_JIT)
-#if DFG_ENABLE(SUCCESS_STATS)
- static SamplingCounter counter("orignalJIT");
- emitCount(counter);
-#endif
-#endif
-
-#if ENABLE(VALUE_PROFILER)
ASSERT(m_bytecodeOffset == (unsigned)-1);
if (shouldEmitProfiling()) {
for (int argument = 0; argument < m_codeBlock->numParameters(); ++argument) {
continue;
int offset = CallFrame::argumentOffsetIncludingThis(argument) * static_cast<int>(sizeof(Register));
#if USE(JSVALUE64)
- loadPtr(Address(callFrameRegister, offset), regT0);
+ load64(Address(callFrameRegister, offset), regT0);
#elif USE(JSVALUE32_64)
load32(Address(callFrameRegister, offset + OBJECT_OFFSETOF(JSValue, u.asBits.payload)), regT0);
load32(Address(callFrameRegister, offset + OBJECT_OFFSETOF(JSValue, u.asBits.tag)), regT1);
emitValueProfilingSite(m_codeBlock->valueProfileForArgument(argument));
}
}
-#endif
- addPtr(TrustedImm32(m_codeBlock->m_numCalleeRegisters * sizeof(Register)), callFrameRegister, regT1);
- registerFileCheck = branchPtr(Below, AbsoluteAddress(m_globalData->interpreter->registerFile().addressOfEnd()), regT1);
+ addPtr(TrustedImm32(stackPointerOffsetFor(m_codeBlock) * sizeof(Register)), callFrameRegister, regT1);
+ stackOverflow = branchPtr(Above, AbsoluteAddress(m_vm->addressOfStackLimit()), regT1);
}
- Label functionBody = label();
-
-#if ENABLE(VALUE_PROFILER)
- if (m_canBeOptimized)
- add32(TrustedImm32(1), AbsoluteAddress(&m_codeBlock->m_executionEntryCount));
-#endif
+ addPtr(TrustedImm32(stackPointerOffsetFor(m_codeBlock) * sizeof(Register)), callFrameRegister, stackPointerRegister);
+ checkStackPointerAlignment();
privateCompileMainPass();
privateCompileLinkPass();
privateCompileSlowCases();
+
+ if (m_disassembler)
+ m_disassembler->setEndOfSlowPath(label());
Label arityCheck;
if (m_codeBlock->codeType() == FunctionCode) {
- registerFileCheck.link(this);
+ stackOverflow.link(this);
m_bytecodeOffset = 0;
- JITStubCall(this, cti_register_file_check).call();
-#ifndef NDEBUG
- m_bytecodeOffset = (unsigned)-1; // Reset this, in order to guard its use with ASSERTs.
-#endif
- jump(functionBody);
+ if (maxFrameExtentForSlowPathCall)
+ addPtr(TrustedImm32(-maxFrameExtentForSlowPathCall), stackPointerRegister);
+ callOperationWithCallFrameRollbackOnException(operationThrowStackOverflowError, m_codeBlock);
arityCheck = label();
- preserveReturnAddressAfterCall(regT2);
- emitPutToCallFrameHeader(regT2, RegisterFile::ReturnPC);
- emitPutImmediateToCallFrameHeader(m_codeBlock, RegisterFile::CodeBlock);
+ store8(TrustedImm32(0), &m_codeBlock->m_shouldAlwaysBeInlined);
+ emitFunctionPrologue();
+ emitPutImmediateToCallFrameHeader(m_codeBlock, JSStack::CodeBlock);
- load32(payloadFor(RegisterFile::ArgumentCount), regT1);
+ load32(payloadFor(JSStack::ArgumentCount), regT1);
branch32(AboveOrEqual, regT1, TrustedImm32(m_codeBlock->m_numParameters)).linkTo(beginLabel, this);
m_bytecodeOffset = 0;
- JITStubCall(this, m_codeBlock->m_isConstructor ? cti_op_construct_arityCheck : cti_op_call_arityCheck).call(callFrameRegister);
+
+ if (maxFrameExtentForSlowPathCall)
+ addPtr(TrustedImm32(-maxFrameExtentForSlowPathCall), stackPointerRegister);
+ callOperationWithCallFrameRollbackOnException(m_codeBlock->m_isConstructor ? operationConstructArityCheck : operationCallArityCheck);
+ if (maxFrameExtentForSlowPathCall)
+ addPtr(TrustedImm32(maxFrameExtentForSlowPathCall), stackPointerRegister);
+ if (returnValueGPR != regT0)
+ move(returnValueGPR, regT0);
+ branchTest32(Zero, regT0).linkTo(beginLabel, this);
+ GPRReg thunkReg;
+#if USE(JSVALUE64)
+ thunkReg = GPRInfo::regT7;
+#else
+ thunkReg = GPRInfo::regT5;
+#endif
+ move(TrustedImmPtr(m_vm->arityCheckFailReturnThunks->returnPCsFor(*m_vm, m_codeBlock->numParameters())), thunkReg);
+ loadPtr(BaseIndex(thunkReg, regT0, timesPtr()), thunkReg);
+ emitNakedCall(m_vm->getCTIStub(arityFixup).code());
+
#if !ASSERT_DISABLED
m_bytecodeOffset = (unsigned)-1; // Reset this, in order to guard its use with ASSERTs.
#endif
}
ASSERT(m_jmpTable.isEmpty());
+
+ privateCompileExceptionHandlers();
+
+ if (m_disassembler)
+ m_disassembler->setEndOfCode(label());
- LinkBuffer patchBuffer(*m_globalData, this, m_codeBlock, effort);
+ LinkBuffer patchBuffer(*m_vm, *this, m_codeBlock, effort);
if (patchBuffer.didFailToAllocate())
- return JITCode();
+ return CompilationFailed;
// Translate vPC offsets into addresses in JIT generated code, for switch tables.
for (unsigned i = 0; i < m_switches.size(); ++i) {
StringJumpTable::StringOffsetTable::iterator end = record.jumpTable.stringJumpTable->offsetTable.end();
for (StringJumpTable::StringOffsetTable::iterator it = record.jumpTable.stringJumpTable->offsetTable.begin(); it != end; ++it) {
- unsigned offset = it->second.branchOffset;
- it->second.ctiOffset = offset ? patchBuffer.locationOf(m_labels[bytecodeOffset + offset]) : record.jumpTable.stringJumpTable->ctiDefault;
+ unsigned offset = it->value.branchOffset;
+ it->value.ctiOffset = offset ? patchBuffer.locationOf(m_labels[bytecodeOffset + offset]) : record.jumpTable.stringJumpTable->ctiDefault;
}
}
}
patchBuffer.link(iter->from, FunctionPtr(iter->to));
}
- if (m_codeBlock->needsCallReturnIndices()) {
- m_codeBlock->callReturnIndexVector().reserveCapacity(m_calls.size());
- for (Vector<CallRecord>::iterator iter = m_calls.begin(); iter != m_calls.end(); ++iter)
- m_codeBlock->callReturnIndexVector().append(CallReturnOffsetToBytecodeOffset(patchBuffer.returnAddressOffset(iter->from), iter->bytecodeOffset));
- }
-
- m_codeBlock->setNumberOfStructureStubInfos(m_propertyAccessCompilationInfo.size());
- for (unsigned i = 0; i < m_propertyAccessCompilationInfo.size(); ++i)
- m_propertyAccessCompilationInfo[i].copyToStubInfo(m_codeBlock->structureStubInfo(i), patchBuffer);
- m_codeBlock->setNumberOfCallLinkInfos(m_callStructureStubCompilationInfo.size());
- for (unsigned i = 0; i < m_codeBlock->numberOfCallLinkInfos(); ++i) {
- CallLinkInfo& info = m_codeBlock->callLinkInfo(i);
- info.callType = m_callStructureStubCompilationInfo[i].callType;
- info.bytecodeIndex = m_callStructureStubCompilationInfo[i].bytecodeIndex;
- info.callReturnLocation = CodeLocationLabel(patchBuffer.locationOfNearCall(m_callStructureStubCompilationInfo[i].callReturnLocation));
- info.hotPathBegin = patchBuffer.locationOf(m_callStructureStubCompilationInfo[i].hotPathBegin);
- info.hotPathOther = patchBuffer.locationOfNearCall(m_callStructureStubCompilationInfo[i].hotPathOther);
+ for (unsigned i = m_getByIds.size(); i--;)
+ m_getByIds[i].finalize(patchBuffer);
+ for (unsigned i = m_putByIds.size(); i--;)
+ m_putByIds[i].finalize(patchBuffer);
+
+ m_codeBlock->setNumberOfByValInfos(m_byValCompilationInfo.size());
+ for (unsigned i = 0; i < m_byValCompilationInfo.size(); ++i) {
+ CodeLocationJump badTypeJump = CodeLocationJump(patchBuffer.locationOf(m_byValCompilationInfo[i].badTypeJump));
+ CodeLocationLabel doneTarget = patchBuffer.locationOf(m_byValCompilationInfo[i].doneTarget);
+ CodeLocationLabel slowPathTarget = patchBuffer.locationOf(m_byValCompilationInfo[i].slowPathTarget);
+ CodeLocationCall returnAddress = patchBuffer.locationOf(m_byValCompilationInfo[i].returnAddress);
+
+ m_codeBlock->byValInfo(i) = ByValInfo(
+ m_byValCompilationInfo[i].bytecodeIndex,
+ badTypeJump,
+ m_byValCompilationInfo[i].arrayMode,
+ differenceBetweenCodePtr(badTypeJump, doneTarget),
+ differenceBetweenCodePtr(returnAddress, slowPathTarget));
}
- unsigned methodCallCount = m_methodCallCompilationInfo.size();
- m_codeBlock->addMethodCallLinkInfos(methodCallCount);
- for (unsigned i = 0; i < methodCallCount; ++i) {
- MethodCallLinkInfo& info = m_codeBlock->methodCallLinkInfo(i);
- info.bytecodeIndex = m_methodCallCompilationInfo[i].bytecodeIndex;
- info.cachedStructure.setLocation(patchBuffer.locationOf(m_methodCallCompilationInfo[i].structureToCompare));
- info.callReturnLocation = m_codeBlock->structureStubInfo(m_methodCallCompilationInfo[i].propertyAccessIndex).callReturnLocation;
+ for (unsigned i = 0; i < m_callCompilationInfo.size(); ++i) {
+ CallCompilationInfo& compilationInfo = m_callCompilationInfo[i];
+ CallLinkInfo& info = *compilationInfo.callLinkInfo;
+ info.callReturnLocation = patchBuffer.locationOfNearCall(compilationInfo.callReturnLocation);
+ info.hotPathBegin = patchBuffer.locationOf(compilationInfo.hotPathBegin);
+ info.hotPathOther = patchBuffer.locationOfNearCall(compilationInfo.hotPathOther);
}
-#if ENABLE(DFG_JIT) || ENABLE(LLINT)
- if (canBeOptimized()
-#if ENABLE(LLINT)
- || true
-#endif
- ) {
- CompactJITCodeMap::Encoder jitCodeMapEncoder;
- for (unsigned bytecodeOffset = 0; bytecodeOffset < m_labels.size(); ++bytecodeOffset) {
- if (m_labels[bytecodeOffset].isSet())
- jitCodeMapEncoder.append(bytecodeOffset, patchBuffer.offsetOf(m_labels[bytecodeOffset]));
- }
- m_codeBlock->setJITCodeMap(jitCodeMapEncoder.finish());
+ CompactJITCodeMap::Encoder jitCodeMapEncoder;
+ for (unsigned bytecodeOffset = 0; bytecodeOffset < m_labels.size(); ++bytecodeOffset) {
+ if (m_labels[bytecodeOffset].isSet())
+ jitCodeMapEncoder.append(bytecodeOffset, patchBuffer.offsetOf(m_labels[bytecodeOffset]));
}
-#endif
+ m_codeBlock->setJITCodeMap(jitCodeMapEncoder.finish());
- if (m_codeBlock->codeType() == FunctionCode && functionEntryArityCheck)
- *functionEntryArityCheck = patchBuffer.locationOf(arityCheck);
+ MacroAssemblerCodePtr withArityCheck;
+ if (m_codeBlock->codeType() == FunctionCode)
+ withArityCheck = patchBuffer.locationOf(arityCheck);
+
+ if (Options::showDisassembly())
+ m_disassembler->dump(patchBuffer);
+ if (m_compilation) {
+ m_disassembler->reportToProfiler(m_compilation.get(), patchBuffer);
+ m_vm->m_perBytecodeProfiler->addCompilation(m_compilation);
+ }
- CodeRef result = patchBuffer.finalizeCode();
+ CodeRef result = patchBuffer.finalizeCodeWithoutDisassembly();
- m_globalData->machineCodeBytesPerBytecodeWordForBaselineJIT.add(
+ m_vm->machineCodeBytesPerBytecodeWordForBaselineJIT.add(
static_cast<double>(result.size()) /
static_cast<double>(m_codeBlock->instructions().size()));
+ m_codeBlock->shrinkToFit(CodeBlock::LateShrink);
+ m_codeBlock->setJITCode(
+ adoptRef(new DirectJITCode(result, withArityCheck, JITCode::BaselineJIT)));
+
#if ENABLE(JIT_VERBOSE)
- dataLog("JIT generated code for %p at [%p, %p).\n", m_codeBlock, result.executableMemory()->start(), result.executableMemory()->end());
+ dataLogF("JIT generated code for %p at [%p, %p).\n", m_codeBlock, result.executableMemory()->start(), result.executableMemory()->end());
#endif
- return JITCode(result, JITCode::BaselineJIT);
+ return CompilationSuccessful;
}
-void JIT::linkFor(JSFunction* callee, CodeBlock* callerCodeBlock, CodeBlock* calleeCodeBlock, JIT::CodePtr code, CallLinkInfo* callLinkInfo, JSGlobalData* globalData, CodeSpecializationKind kind)
+void JIT::privateCompileExceptionHandlers()
{
- RepatchBuffer repatchBuffer(callerCodeBlock);
-
- ASSERT(!callLinkInfo->isLinked());
- callLinkInfo->callee.set(*globalData, callLinkInfo->hotPathBegin, callerCodeBlock->ownerExecutable(), callee);
- callLinkInfo->lastSeenCallee.set(*globalData, callerCodeBlock->ownerExecutable(), callee);
- repatchBuffer.relink(callLinkInfo->hotPathOther, code);
+ if (m_exceptionChecks.empty() && m_exceptionChecksWithCallFrameRollback.empty())
+ return;
- if (calleeCodeBlock)
- calleeCodeBlock->linkIncomingCall(callLinkInfo);
+ Jump doLookup;
- // Patch the slow patch so we do not continue to try to link.
- if (kind == CodeForCall) {
- repatchBuffer.relink(CodeLocationNearCall(callLinkInfo->callReturnLocation), globalData->jitStubs->ctiVirtualCall());
- return;
+ if (!m_exceptionChecksWithCallFrameRollback.empty()) {
+ m_exceptionChecksWithCallFrameRollback.link(this);
+ emitGetCallerFrameFromCallFrameHeaderPtr(GPRInfo::argumentGPR1);
+ doLookup = jump();
}
- ASSERT(kind == CodeForConstruct);
- repatchBuffer.relink(CodeLocationNearCall(callLinkInfo->callReturnLocation), globalData->jitStubs->ctiVirtualConstruct());
+ if (!m_exceptionChecks.empty())
+ m_exceptionChecks.link(this);
+
+ // lookupExceptionHandler is passed two arguments, the VM and the exec (the CallFrame*).
+ move(GPRInfo::callFrameRegister, GPRInfo::argumentGPR1);
+
+ if (doLookup.isSet())
+ doLookup.link(this);
+
+ move(TrustedImmPtr(vm()), GPRInfo::argumentGPR0);
+
+#if CPU(X86)
+ // FIXME: should use the call abstraction, but this is currently in the SpeculativeJIT layer!
+ poke(GPRInfo::argumentGPR0);
+ poke(GPRInfo::argumentGPR1, 1);
+#endif
+ m_calls.append(CallRecord(call(), (unsigned)-1, FunctionPtr(lookupExceptionHandler).value()));
+ jumpToExceptionHandler();
+}
+
+unsigned JIT::frameRegisterCountFor(CodeBlock* codeBlock)
+{
+ ASSERT(static_cast<unsigned>(codeBlock->m_numCalleeRegisters) == WTF::roundUpToMultipleOf(stackAlignmentRegisters(), static_cast<unsigned>(codeBlock->m_numCalleeRegisters)));
+
+ return roundLocalRegisterCountForFramePointerOffset(codeBlock->m_numCalleeRegisters + maxFrameExtentForSlowPathCallInRegisters);
+}
+
+int JIT::stackPointerOffsetFor(CodeBlock* codeBlock)
+{
+ return virtualRegisterForLocal(frameRegisterCountFor(codeBlock) - 1).offset();
}
} // namespace JSC
projects / apple / javascriptcore.git / blobdiff