[Vm-dev] VM Maker: VMMaker.oscog-eem.742.mcz

[commits at source.squeak.org]

Eliot Miranda uploaded a new version of VMMaker to project VM Maker:
http://source.squeak.org/VMMaker/VMMaker.oscog-eem.742.mcz

==================== Summary ====================

Name: VMMaker.oscog-eem.742
Author: eem
Time: 31 May 2014, 10:15:20.21 pm
UUID: ed898ba8-2dfc-4c0f-9d9a-00633e988f59
Ancestors: VMMaker.oscog-eem.741

Delete the straggling cePositive32BitIntegerTrampoline in
Cogit that got moved to CogObjectRepresentationForSqueakV3.

=============== Diff against VMMaker.oscog-eem.741 ===============

Item was changed:
  CogClass subclass: #Cogit
+ 	instanceVariableNames: 'coInterpreter objectMemory objectRepresentation processor threadManager methodZone methodZoneBase codeBase minValidCallAddress lastNInstructions simulatedAddresses simulatedTrampolines simulatedVariableGetters simulatedVariableSetters printRegisters printInstructions compilationTrace clickConfirm breakPC breakBlock singleStep guardPageSize traceFlags traceStores breakMethod methodObj initialPC endPC methodOrBlockNumArgs inBlock needsFrame hasYoungReferent usesMethodClass primitiveIndex backEnd callerSavedRegMask postCompileHook primInvokeLabel methodLabel stackCheckLabel blockEntryLabel blockEntryNoContextSwitch blockNoContextSwitchOffset stackOverflowCall sendMissCall missOffset entryPointMask checkedEntryAlignment uncheckedEntryAlignment cmEntryOffset entry cmNoCheckEntryOffset noCheckEntry dynSuperEntry dynSuperEntryAlignment cmDynSuperEntryOffset mnuCall interpretCall endCPICCase0 endCPICCase1 numPICCases firstCPICCaseOffset cPICCaseSize cPICEndSize closedPICSize openPICSize fixups abstractOpcodes annotations generatorTable primitiveGeneratorTable byte0 byte1 byte2 byte3 bytecodePC bytecodeSetOffset opcodeIndex numAbstractOpcodes annotationIndex blockStarts blockCount labelCounter cStackAlignment expectedSPAlignment expectedFPAlignment codeModified maxMethodBefore maxLitIndex ceMethodAbortTrampoline cePICAbortTrampoline ceCheckForInterruptTrampoline ceCPICMissTrampoline ceReturnToInterpreterTrampoline ceBaseFrameReturnTrampoline ceSendMustBeBooleanAddTrueTrampoline ceSendMustBeBooleanAddFalseTrampoline ceCannotResumeTrampoline ceClosureCopyTrampoline ceEnterCogCodePopReceiverReg ceEnterCogCodePopReceiverAndClassRegs cePrimReturnEnterCogCode cePrimReturnEnterCogCodeProfiling ceNonLocalReturnTrampoline ceFetchContextInstVarTrampoline ceStoreContextInstVarTrampoline ceImplicitReceiverTrampoline ceExplicitReceiverTrampoline ceCaptureCStackPointers ceFlushICache ceCheckFeaturesFunction ceTraceLinkedSendTrampoline ceTraceBlockActivationTrampoline ceTraceStoreTrampoline ceGetSP sendTrampolines superSendTrampolines dynamicSuperSendTrampolines firstSend lastSend realCEEnterCogCodePopReceiverReg realCEEnterCogCodePopReceiverAndClassRegs trampolineTableIndex trampolineAddresses objectReferencesInRuntime runtimeObjectRefIndex cFramePointerInUse debugPrimCallStackOffset ceTryLockVMOwner ceUnlockVMOwner cogMethodSurrogateClass cogBlockMethodSurrogateClass extA extB'
- 	instanceVariableNames: 'coInterpreter objectMemory objectRepresentation processor threadManager methodZone methodZoneBase codeBase minValidCallAddress lastNInstructions simulatedAddresses simulatedTrampolines simulatedVariableGetters simulatedVariableSetters printRegisters printInstructions compilationTrace clickConfirm breakPC breakBlock singleStep guardPageSize traceFlags traceStores breakMethod methodObj initialPC endPC methodOrBlockNumArgs inBlock needsFrame hasYoungReferent usesMethodClass primitiveIndex backEnd callerSavedRegMask postCompileHook primInvokeLabel methodLabel stackCheckLabel blockEntryLabel blockEntryNoContextSwitch blockNoContextSwitchOffset stackOverflowCall sendMissCall missOffset entryPointMask checkedEntryAlignment uncheckedEntryAlignment cmEntryOffset entry cmNoCheckEntryOffset noCheckEntry dynSuperEntry dynSuperEntryAlignment cmDynSuperEntryOffset mnuCall interpretCall endCPICCase0 endCPICCase1 numPICCases firstCPICCaseOffset cPICCaseSize cPICEndSize closedPICSize openPICSize fixups abstractOpcodes annotations generatorTable primitiveGeneratorTable byte0 byte1 byte2 byte3 bytecodePC bytecodeSetOffset opcodeIndex numAbstractOpcodes annotationIndex blockStarts blockCount labelCounter cStackAlignment expectedSPAlignment expectedFPAlignment codeModified maxMethodBefore maxLitIndex ceMethodAbortTrampoline cePICAbortTrampoline ceCheckForInterruptTrampoline ceCPICMissTrampoline ceReturnToInterpreterTrampoline ceBaseFrameReturnTrampoline ceSendMustBeBooleanAddTrueTrampoline ceSendMustBeBooleanAddFalseTrampoline ceCannotResumeTrampoline ceClosureCopyTrampoline ceEnterCogCodePopReceiverReg ceEnterCogCodePopReceiverAndClassRegs cePrimReturnEnterCogCode cePrimReturnEnterCogCodeProfiling ceNonLocalReturnTrampoline ceFetchContextInstVarTrampoline ceStoreContextInstVarTrampoline cePositive32BitIntegerTrampoline ceImplicitReceiverTrampoline ceExplicitReceiverTrampoline ceCaptureCStackPointers ceFlushICache ceCheckFeaturesFunction ceTraceLinkedSendTrampoline ceTraceBlockActivationTrampoline ceTraceStoreTrampoline ceGetSP sendTrampolines superSendTrampolines dynamicSuperSendTrampolines firstSend lastSend realCEEnterCogCodePopReceiverReg realCEEnterCogCodePopReceiverAndClassRegs trampolineTableIndex trampolineAddresses objectReferencesInRuntime runtimeObjectRefIndex cFramePointerInUse debugPrimCallStackOffset ceTryLockVMOwner ceUnlockVMOwner cogMethodSurrogateClass cogBlockMethodSurrogateClass extA extB'
  	classVariableNames: 'AltBlockCreationBytecodeSize AltNSSendIsPCAnnotated AnnotationConstantNames AnnotationShift BlockCreationBytecodeSize Debug DisplacementMask DisplacementX2N EagerInstructionDecoration EncounteredUnknownBytecode FirstAnnotation HasBytecodePC InsufficientCodeSpace IsAbsPCReference IsDisplacement IsDisplacementX2N IsNSSendCall IsObjectReference IsRelativeCall IsSendCall MapEnd MaxCompiledPrimitiveIndex MaxNegativeErrorCode MaxStackAllocSize MaxUnitDisplacement MaxX2NDisplacement MethodTooBig NSSendIsPCAnnotated NotFullyInitialized NumObjRefsInRuntime NumSendTrampolines NumTrampolines ProcessorClass UnimplementedPrimitive YoungSelectorInPIC'
  	poolDictionaries: 'CogCompilationConstants CogMethodConstants CogRTLOpcodes VMBasicConstants VMObjectIndices VMStackFrameOffsets'
  	category: 'VMMaker-JIT'!
  Cogit class
  	instanceVariableNames: 'generatorTable primitiveTable'!
  
  !Cogit commentStamp: 'eem 2/13/2013 15:37' prior: 0!
  I am the code generator for the Cog VM.  My job is to produce machine code versions of methods for faster execution and to manage inline caches for faster send performance.  I can be tested in the current image using my class-side in-image compilation facilities.  e.g. try
  
  	StackToRegisterMappingCogit genAndDis: (Integer >> #benchFib)
  
  I have concrete subclasses that implement different levels of optimization:
  	SimpleStackBasedCogit is the simplest code generator.
  
  	StackToRegisterMappingCogit is the current production code generator  It defers pushing operands
  	to the stack until necessary and implements a register-based calling convention for low-arity sends.
  
  	StackToRegisterMappingCogit is an experimental code generator with support for counting
  	conditional branches, intended to support adaptive optimization.
  
  coInterpreter <CoInterpreterSimulator>
  	the VM's interpreter with which I cooperate
  methodZoneManager <CogMethodZoneManager>
  	the manager of the machine code zone
  objectRepresentation <CogObjectRepresentation>
  	the object used to generate object accesses
  processor <BochsIA32Alien|?>
  	the simulator that executes the IA32/x86 machine code I generate when simulating execution in Smalltalk
  simulatedTrampolines <Dictionary of Integer -> MessageSend>
  	the dictionary mapping trap jump addresses to run-time routines used to warp from simulated machine code in to the Smalltalk run-time.
  simulatedVariableGetters <Dictionary of Integer -> MessageSend>
  	the dictionary mapping trap read addresses to variables in run-time objects used to allow simulated machine code to read variables in the Smalltalk run-time.
  simulatedVariableSetters <Dictionary of Integer -> MessageSend>
  	the dictionary mapping trap write addresses to variables in run-time objects used to allow simulated machine code to write variables in the Smalltalk run-time.
  printRegisters printInstructions clickConfirm <Boolean>
  	flags controlling debug printing and code simulation
  breakPC <Integer>
  	machine code pc breakpoint
  cFramePointer cStackPointer <Integer>
  	the variables representing the C stack & frame pointers, which must change on FFI callback and return
  selectorOop <sqInt>
  	the oop of the methodObj being compiled
  methodObj <sqInt>
  	the bytecode method being compiled
  initialPC endPC <Integer>
  	the start and end pcs of the methodObj being compiled
  methodOrBlockNumArgs <Integer>
  	argument count of current method or block being compiled
  needsFrame <Boolean>
  	whether methodObj or block needs a frame to execute
  primitiveIndex <Integer>
  	primitive index of current method being compiled
  methodLabel <CogAbstractOpcode>
  	label for the method header
  blockEntryLabel <CogAbstractOpcode>
  	label for the start of the block dispatch code
  stackOverflowCall <CogAbstractOpcode>
  	label for the call of ceStackOverflow in the method prolog
  sendMissCall <CogAbstractOpcode>
  	label for the call of ceSICMiss in the method prolog
  entryOffset <Integer>
  	offset of method entry code from start (header) of method
  entry <CogAbstractOpcode>
  	label for the first instruction of the method entry code
  noCheckEntryOffset <Integer>
  	offset of the start of a method proper (after the method entry code) from start (header) of method
  noCheckEntry <CogAbstractOpcode>
  	label for the first instruction of start of a method proper
  fixups <Array of <AbstractOpcode Label | nil>>
  	the labels for forward jumps that will be fixed up when reaching the relevant bytecode.  fixup shas one element per byte in methodObj's bytecode
  abstractOpcodes <Array of <AbstractOpcode>>
  	the code generated when compiling methodObj
  byte0 byte1 byte2 byte3 <Integer>
  	individual bytes of current bytecode being compiled in methodObj
  bytecodePointer <Integer>
  	bytecode pc (same as Smalltalk) of the current bytecode being compiled
  opcodeIndex <Integer>
  	the index of the next free entry in abstractOpcodes (this code is translated into C where OrderedCollection et al do not exist)
  numAbstractOpcodes <Integer>
  	the number of elements in abstractOpcocdes
  blockStarts <Array of <BlockStart>>
  	the starts of blocks in the current method
  blockCount
  	the index into blockStarts as they are being noted, and hence eventuakly teh total number of blocks in the current method
  labelCounter <Integer>
  	a nicety for numbering labels not needed in the production system but probably not expensive enough to worry about
  ceStackOverflowTrampoline <Integer>
  ceSend0ArgsTrampoline <Integer>
  ceSend1ArgsTrampoline <Integer>
  ceSend2ArgsTrampoline <Integer>
  ceSendNArgsTrampoline <Integer>
  ceSendSuper0ArgsTrampoline <Integer>
  ceSendSuper1ArgsTrampoline <Integer>
  ceSendSuper2ArgsTrampoline <Integer>
  ceSendSuperNArgsTrampoline <Integer>
  ceSICMissTrampoline <Integer>
  ceCPICMissTrampoline <Integer>
  ceStoreCheckTrampoline <Integer>
  ceReturnToInterpreterTrampoline <Integer>
  ceBaseFrameReturnTrampoline <Integer>
  ceSendMustBeBooleanTrampoline <Integer>
  ceClosureCopyTrampoline <Integer>
  	the various trampolines (system-call-like jumps from machine code to the run-time).
  	See Cogit>>generateTrampolines for the mapping from trampoline to run-time
  	routine and then read the run-time routine for a funcitonal description.
  ceEnterCogCodePopReceiverReg <Integer>
  	the enilopmart (jump from run-time to machine-code)
  methodZoneBase <Integer>
  !
  Cogit class
  	instanceVariableNames: 'generatorTable primitiveTable'!