VM Maker: VMMaker.oscog-sk.2367.mcz

 

Hi,

I got a timeout error during the upload because of my slow internet connexion. Hope this won't cause any problem.

I finally found time to commit this new primitive! If you spot any mistake, contact me!

I have updated the related methods in Squeak (updating previous senders of compare:with:collated so they call this primitive instead) + the tests methods but I can't commit to the repository. I can send the .st files to someone who does have the rights.

Sophie

2018-04-19 12:02 GMT+02:00 <[hidden email]>:

 
Sophie Kaleba uploaded a new version of VMMaker to project VM Maker:
http://source.squeak.org/VMMaker/VMMaker.oscog-sk.2367.mcz

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

Name: VMMaker.oscog-sk.2367
Author: sk
Time: 19 April 2018, 12:02:35.661622 pm
UUID: 0c2401e3-1450-4f73-8e81-958f50171595
Ancestors: VMMaker.oscog- nice.2366

** new primitive to compare strings (slang + JIT)
answers negative smi, 0 or positive smi (instead of 1, 2 or 3 in the MiscPlugin)

* Slang (primitiveCompareWith)
order is optionnal.
comparison loop performed in rawCompare: string1 length: strLength1 with: string2 length: strLength2 accessBlock: accessBlock

* JIT (genPrimitiveStringCompareWith)
the JIT primitive does not take order as parameter (assumed asciiOrder)
quick jump if one of the strings is empty

=============== Diff against VMMaker.oscog- nice.2366 ===============

Item was added:
+ ----- Method: CogObjectRepresentation>>genPrimitiveStringCompareWith (in category 'primitive generators') -----
+ genPrimitiveStringCompareWith
+       "subclasses override if they can"
+       ^UnimplementedPrimitive!

Item was added:
+ ----- Method: CogObjectRepresentationForSpur>>genPrimitiveStringCompareWith (in category 'primitive generators') -----
+ genPrimitiveStringCompareWith
+       "primitiveCompareWith:"
+       
+       | instr jump jumpAbove jumpIncorrectFormat1 jumpIncorrectFormat2 jumpIncorrectFormat3 jumpIncorrectFormat4 jumpMidFailure jumpSuccess minSizeReg string1CharOrByteSizeReg string2CharOrByteSizeReg string1Reg string2Reg |
+       
+       <var: #jumpIncorrectFormat1 type: #'AbstractInstruction *'>
+       <var: #jumpIncorrectFormat2 type: #'AbstractInstruction *'>
+       <var: #jumpIncorrectFormat3 type: #'AbstractInstruction *'>
+       <var: #jumpIncorrectFormat4 type: #'AbstractInstruction *'>
+       <var: #jumpAbove type: #'AbstractInstruction *'>
+       <var: #jumpSuccess type: #'AbstractInstruction *'>
+       <var: #jump type: #'AbstractInstruction *'>
+       <var: #jumpMidFailure type: #'AbstractInstruction *'>
+       
+       "I redefine those name to ease program comprehension"
+       string1Reg := ReceiverResultReg.
+       string2Reg := Arg0Reg.
+       string1CharOrByteSizeReg := Arg1Reg.
+       string2CharOrByteSizeReg := ClassReg.
+       minSizeReg := SendNumArgsReg.
+       
+       "Load arguments in reg"
+       cogit genLoadArgAtDepth: 0 into: string2Reg.
+       
+       "checks if string1 is a byteobject and get its size in bytes"
+       self genGetFormatOf: string1Reg into: TempReg.
+       cogit CmpCq: objectMemory firstByteFormat R: TempReg.
+       jumpIncorrectFormat1 := cogit JumpLess: 0.
+       cogit CmpCq: objectMemory firstCompiledMethodFormat R: TempReg.
+       jumpIncorrectFormat2 := cogit JumpAboveOrEqual: 0.
+               
+       self genGetNumSlotsOf: string1Reg into: string1CharOrByteSizeReg.
+       (cogit LogicalShiftLeftCq: objectMemory shiftForWord R: string1CharOrByteSizeReg).
+       cogit AndCq: objectMemory wordSize - 1 R: TempReg R: TempReg.
+       cogit SubR: TempReg R: string1CharOrByteSizeReg.
+       
+       "checks if string2 is a byteobject and get its size in bytes"
+       self genGetFormatOf: string2Reg into: TempReg.
+       cogit CmpCq: objectMemory firstByteFormat R: TempReg.
+       jumpIncorrectFormat3 := cogit JumpLess: 0.
+       cogit CmpCq: objectMemory firstCompiledMethodFormat R: TempReg.
+       jumpIncorrectFormat4 := cogit JumpAboveOrEqual: 0.
+               
+       self genGetNumSlotsOf: string2Reg into: string2CharOrByteSizeReg.
+       (cogit LogicalShiftLeftCq: objectMemory shiftForWord R: string2CharOrByteSizeReg).
+       cogit AndCq: objectMemory wordSize - 1 R: TempReg R: TempReg.
+       cogit SubR: TempReg R: string2CharOrByteSizeReg.
+       
+       "Type and number of arguments are correct"
+       "Compute the min"       
+       cogit CmpR: string1CharOrByteSizeReg R: string2CharOrByteSizeReg.
+       jumpAbove := cogit JumpBelow: 0.
+       cogit MoveR: string1CharOrByteSizeReg R: minSizeReg.
+       jump := cogit Jump: 0.
+       jumpAbove jmpTarget: (cogit MoveR: string2CharOrByteSizeReg R: minSizeReg).
+       jump jmpTarget: (cogit CmpCq: 0 R: minSizeReg).
+       jumpSuccess := cogit JumpZero: 0. "if one of the string is empty, no need to go through the comparing loop"
+       
+       "Compare the bytes"
+       cogit MoveCq: objectMemory baseHeaderSize  R: TempReg.
+       cogit AddCq: objectMemory baseHeaderSize R: minSizeReg.
+       
+       instr := cogit MoveXbr: TempReg R: string1Reg R: string1CharOrByteSizeReg.
+       cogit MoveXbr: TempReg R: string2Reg R: string2CharOrByteSizeReg.
+       cogit SubR: string2CharOrByteSizeReg R: string1CharOrByteSizeReg.
+       jumpMidFailure := cogit JumpNonZero: 0. "the 2 compared characters are different, exit the loop"
+       cogit AddCq: 1 R: TempReg.
+       cogit CmpR: TempReg R: minSizeReg.
+       cogit JumpNonZero: instr.
+       
+       "all bytes from 1 to minSize are equal"
+       self genGetNumBytesOf: string1Reg into: string1CharOrByteSizeReg.
+       self genGetNumBytesOf: string2Reg into: string2CharOrByteSizeReg.
+       jumpSuccess jmpTarget: (cogit SubR: string2CharOrByteSizeReg R: string1CharOrByteSizeReg).
+       jumpMidFailure  jmpTarget: (cogit MoveR: string1CharOrByteSizeReg R: ReceiverResultReg).       
+       self genConvertIntegerToSmallIntegerInReg: ReceiverResultReg.
+       cogit genPrimReturn.
+       
+       jumpIncorrectFormat4
+               jmpTarget: (jumpIncorrectFormat3
+                       jmpTarget: (jumpIncorrectFormat2
+                               jmpTarget: (jumpIncorrectFormat1 jmpTarget: cogit Label))).
+       
+       ^ CompletePrimitive!

Item was changed:
  ----- Method: Interpreter class>>initializePrimitiveTable (in category 'initialization') -----
(excessive size, no diff calculated)

Item was added:
+ ----- Method: InterpreterPrimitives>>primitiveCompareWith (in category 'string primitives') -----
+ primitiveCompareWith
+       "<string1> primitiveCompareWith: string2 [collated: order] "
+       <export: true>
+       
+       | string1 string2 order strLength1 strLength2 result |
+
+       "1 - fetch the parameters from the stack"       
+       (argumentCount = 0 or: [argumentCount > 2]) ifTrue:
+               [^self primitiveFailFor: PrimErrBadNumArgs].
+       argumentCount = 1
+                       ifFalse: "argCount must be 2"
+                               [order := self stackTop.
+                               (objectMemory isBytes: order) ifFalse: [^self primitiveFailFor: PrimErrBadArgument]].
+       string1 := self stackValue: argumentCount.
+       string2 := self stackValue: argumentCount - 1.
+                       
+       "2 - check their types - all parameters are ByteObject"
+       ((objectMemory isBytes: string1)
+       and: [objectMemory isBytes: string2 ])
+               ifFalse:
+                       [^self primitiveFailFor: PrimErrBadArgument].
+       
+       "3 - compare the strings"       
+       strLength1 := objectMemory numBytesOfBytes: string1.
+       strLength2 := objectMemory numBytesOfBytes: string2.
+       result := order
+               ifNil: [self rawCompare: string1 length: strLength1 with: string2 length: strLength2 accessBlock: [:str :index | objectMemory fetchByte: index ofObject: str ]]
+               ifNotNil:
+                       [self rawCompare: string1 length: strLength1 with: string2 length: strLength2 accessBlock: [:str :index | objectMemory fetchByte: (objectMemory fetchByte: index ofObject: str) +1 ofObject: order ]].
+       self pop: argumentCount + 1 thenPush: (objectMemory integerObjectOf: result)
+       
+
+
+       
+       
+       !

Item was added:
+ ----- Method: InterpreterPrimitives>>rawCompare:length:with:length:accessBlock: (in category 'string primitives') -----
+ rawCompare: string1 length: strLength1 with: string2 length: strLength2 accessBlock: accessBlock
+       | c1 c2 min |
+       <inline: true> "needs to be forced else slang does not inline it by default"
+       min := strLength1 min: strLength2.
+       0 to: min-1 do:
+               [:i | c1 := accessBlock value: string1 value: i.
+                       c2 := accessBlock value: string2 value: i.
+                       c1 = c2 ifFalse: [^c1 - c2]].
+       ^strLength1 - strLength2
+
+
+       
+       
+       !

Item was changed:
  ----- Method: SimpleStackBasedCogit class>>initializePrimitiveTableForSqueak (in category 'class initialization') -----
  initializePrimitiveTableForSqueak
        "Initialize the table of primitive generators.  This does not include normal primitives implemented in the coInterpreter.
         N.B. primitives that don't have an explicit arg count (the integer following the generator) may be variadic."
        "SimpleStackBasedCogit initializePrimitiveTableForSqueak"
        MaxCompiledPrimitiveIndex := self objectRepresentationClass wordSize = 8
                                                                                ifTrue: [555]
                                                                                ifFalse: [222].
        primitiveTable := CArrayAccessor on: (Array new: MaxCompiledPrimitiveIndex + 1).
        self table: primitiveTable from:
        #(      "Integer Primitives (0-19)"
                (1 genPrimitiveAdd                              1)
                (2 genPrimitiveSubtract                 1)
                (3 genPrimitiveLessThan         1)
                (4 genPrimitiveGreaterThan              1)
                (5 genPrimitiveLessOrEqual              1)
                (6 genPrimitiveGreaterOrEqual   1)
                (7 genPrimitiveEqual                    1)
                (8 genPrimitiveNotEqual         1)
                (9 genPrimitiveMultiply                 1)
                (10 genPrimitiveDivide                  1)
                (11 genPrimitiveMod                     1)
                (12 genPrimitiveDiv                             1)
                (13 genPrimitiveQuo                     1)
                (14 genPrimitiveBitAnd                  1)
                (15 genPrimitiveBitOr                   1)
                (16 genPrimitiveBitXor                  1)
                (17 genPrimitiveBitShift                        1)
                "(18 primitiveMakePoint)"
                "(19 primitiveFail)"                                    "Guard primitive for simulation -- *must* fail"

                "LargeInteger Primitives (20-39)"
                "(20 primitiveFail)"
                "(21 primitiveAddLargeIntegers)"
                "(22 primitiveSubtractLargeIntegers)"
                "(23 primitiveLessThanLargeIntegers)"
                "(24 primitiveGreaterThanLargeIntegers)"
                "(25 primitiveLessOrEqualLargeIntegers)"
                "(26 primitiveGreaterOrEqualLargeIntegers)"
                "(27 primitiveEqualLargeIntegers)"
                "(28 primitiveNotEqualLargeIntegers)"
                "(29 primitiveMultiplyLargeIntegers)"
                "(30 primitiveDivideLargeIntegers)"
                "(31 primitiveModLargeIntegers)"
                "(32 primitiveDivLargeIntegers)"
                "(33 primitiveQuoLargeIntegers)"
                "(34 primitiveBitAndLargeIntegers)"
                "(35 primitiveBitOrLargeIntegers)"
                "(36 primitiveBitXorLargeIntegers)"
                "(37 primitiveBitShiftLargeIntegers)"

                "Float Primitives (38-59)"
                "(38 genPrimitiveFloatAt)"
                "(39 genPrimitiveFloatAtPut)"
                (40 genPrimitiveAsFloat                                 0)
                (41 genPrimitiveFloatAdd                                1)
                (42 genPrimitiveFloatSubtract                   1)
                (43 genPrimitiveFloatLessThan                   1)
                (44 genPrimitiveFloatGreaterThan                1)
                (45 genPrimitiveFloatLessOrEqual                1)
                (46 genPrimitiveFloatGreaterOrEqual     1)
                (47 genPrimitiveFloatEqual                              1)
                (48 genPrimitiveFloatNotEqual                   1)
                (49 genPrimitiveFloatMultiply                   1)
                (50 genPrimitiveFloatDivide                             1)
                "(51 genPrimitiveTruncated)"
                "(52 genPrimitiveFractionalPart)"
                "(53 genPrimitiveExponent)"
                "(54 genPrimitiveTimesTwoPower)"
                (55 genPrimitiveFloatSquareRoot         0)
                "(56 genPrimitiveSine)"
                "(57 genPrimitiveArctan)"
                "(58 genPrimitiveLogN)"
                "(59 genPrimitiveExp)"

                "Subscript and Stream Primitives (60-67)"
                (60 genPrimitiveAt                              1)
                (61 genPrimitiveAtPut                   2)
                (62 genPrimitiveSize                    0)
                (63 genPrimitiveStringAt                1)
                (64 genPrimitiveStringAtPut             2)
                "The stream primitives no longer pay their way; normal Smalltalk code is faster."
                (65 genFastPrimFail)"was primitiveNext"
                (66 genFastPrimFail) "was primitiveNextPut"
                (67 genFastPrimFail) "was primitiveAtEnd"

                "StorageManagement Primitives (68-79)"
                (68 genPrimitiveObjectAt                        1)      "Good for debugger/InstructionStream performance"
                "(69 primitiveObjectAtPut)"
                (70 genPrimitiveNew                     0)
                (71 genPrimitiveNewWithArg      1)
                "(72 primitiveArrayBecomeOneWay)"               "Blue Book: primitiveBecome"
                "(73 primitiveInstVarAt)"
                "(74 primitiveInstVarAtPut)"
                (75 genPrimitiveIdentityHash    0)
                "(76 primitiveStoreStackp)"                                     "Blue Book: primitiveAsObject"
                "(77 primitiveSomeInstance)"
                "(78 primitiveNextInstance)"
                (79 genPrimitiveNewMethod       2)

                "Control Primitives (80-89)"
                "(80 primitiveFail)"                                                    "Blue Book: primitiveBlockCopy"
                "(81 primitiveFail)"                                                    "Blue Book: primitiveValue"
                "(82 primitiveFail)"                                                    "Blue Book: primitiveValueWithArgs"
                (83 genPrimitivePerform)
                "(84 primitivePerformWithArgs)"
                "(85 primitiveSignal)"
                "(86 primitiveWait)"
                "(87 primitiveResume)"
                "(88 primitiveSuspend)"
                "(89 primitiveFlushCache)"

                "(90 primitiveMousePoint)"
                "(91 primitiveTestDisplayDepth)"                        "Blue Book: primitiveCursorLocPut"
                "(92 primitiveSetDisplayMode)"                          "Blue Book: primitiveCursorLink"
                "(93 primitiveInputSemaphore)"
                "(94 primitiveGetNextEvent)"                            "Blue Book: primitiveSampleInterval"
                "(95 primitiveInputWord)"
                "(96 primitiveFail)"    "primitiveCopyBits"
                "(97 primitiveSnapshot)"
                "(98 primitiveStoreImageSegment)"
                "(99 primitiveLoadImageSegment)"
                "(100 primitivePerformInSuperclass)"            "Blue Book: primitiveSignalAtTick"
                "(101 primitiveBeCursor)"
                "(102 primitiveBeDisplay)"
                "(103 primitiveScanCharacters)"
                "(104 primitiveFail)"   "primitiveDrawLoop"
                (105 genPrimitiveStringReplace)
                "(106 primitiveScreenSize)"
                "(107 primitiveMouseButtons)"
                "(108 primitiveKbdNext)"
                "(109 primitiveKbdPeek)"


                "System Primitives (110-119)"
                (110 genPrimitiveIdentical 1)
                (111 genPrimitiveClass)                         "Support both class and Context>>objectClass:"
                "(112 primitiveBytesLeft)"
                "(113 primitiveQuit)"
                "(114 primitiveExitToDebugger)"
                "(115 primitiveChangeClass)"                                    "Blue Book: primitiveOopsLeft"
                "(116 primitiveFlushCacheByMethod)"
                "(117 primitiveExternalCall)"
                "(118 primitiveDoPrimitiveWithArgs)"
                "(119 primitiveFlushCacheSelective)"

                (148 genPrimitiveShallowCopy 0)                 "a.k.a. clone"

+               (158 genPrimitiveStringCompareWith 1)
                (159 genPrimitiveHashMultiply 0)

                (169 genPrimitiveNotIdentical 1)

                (170 genPrimitiveAsCharacter)                           "SmallInteger>>asCharacter, Character class>>value:"
                (171 genPrimitiveImmediateAsInteger 0)  "Character>>value SmallFloat64>>asInteger"

                "(173 primitiveSlotAt 1)"
                "(174 primitiveSlotAtPut 2)"
                (175 genPrimitiveIdentityHash   0)              "Behavior>>identityHash"

                "Old closure primitives"
                "(186 primitiveFail)" "was primitiveClosureValue"
                "(187 primitiveFail)" "was primitiveClosureValueWithArgs"

                "Perform method directly"
                "(188 primitiveExecuteMethodArgsArray)"
                "(189 primitiveExecuteMethod)"

                "Unwind primitives"
                "(195 primitiveFindNextUnwindContext)"
                "(196 primitiveTerminateTo)"
                "(197 primitiveFindHandlerContext)"
                (198 genFastPrimFail "primitiveMarkUnwindMethod")
                (199 genFastPrimFail "primitiveMarkHandlerMethod")

                "new closure primitives"
                "(200 primitiveClosureCopyWithCopiedValues)"
                (201 genPrimitiveClosureValue   0) "value"
                (202 genPrimitiveClosureValue   1) "value:"
                (203 genPrimitiveClosureValue   2) "value:value:"
                (204 genPrimitiveClosureValue   3) "value:value:value:"
                (205 genPrimitiveClosureValue   4) "value:value:value:value:"
                "(206 genPrimitiveClosureValueWithArgs)" "valueWithArguments:"

                (207 genPrimitiveFullClosureValue) "value[:value:value:value:] et al"
                "(208 genPrimitiveFullClosureValueWithArgs)" "valueWithArguments:"
                (209 genPrimitiveFullClosureValue) "valueNoContextSwitch[:value:] et al"

                "(210 primitiveContextAt)"
                "(211 primitiveContextAtPut)"
                "(212 primitiveContextSize)"

                "(218 primitiveDoNamedPrimitiveWithArgs)"
                "(219 primitiveFail)"   "reserved for Cog primitives"

                "(220 primitiveFail)"           "reserved for Cog primitives"

                (221 genPrimitiveClosureValue   0) "valueNoContextSwitch"
                (222 genPrimitiveClosureValue   1) "valueNoContextSwitch:"

                "SmallFloat primitives (540-559)"
                (541 genPrimitiveSmallFloatAdd                          1)
                (542 genPrimitiveSmallFloatSubtract                     1)
                (543 genPrimitiveSmallFloatLessThan                     1)
                (544 genPrimitiveSmallFloatGreaterThan          1)
                (545 genPrimitiveSmallFloatLessOrEqual          1)
                (546 genPrimitiveSmallFloatGreaterOrEqual               1)
                (547 genPrimitiveSmallFloatEqual                                1)
                (548 genPrimitiveSmallFloatNotEqual                     1)
                (549 genPrimitiveSmallFloatMultiply                             1)
                (550 genPrimitiveSmallFloatDivide                               1)
                "(551 genPrimitiveSmallFloatTruncated                   0)"
                "(552 genPrimitiveSmallFloatFractionalPart              0)"
                "(553 genPrimitiveSmallFloatExponent                    0)"
                "(554 genPrimitiveSmallFloatTimesTwoPower       1)"
                (555 genPrimitiveSmallFloatSquareRoot                   0)
                "(556 genPrimitiveSmallFloatSine                                0)"
                "(557 genPrimitiveSmallFloatArctan                              0)"
                "(558 genPrimitiveSmallFloatLogN                                0)"
                "(559 genPrimitiveSmallFloatExp                         0)"
        )!

Item was changed:
  ----- Method: StackInterpreter class>>initializePrimitiveTable (in category 'initialization') -----
(excessive size, no diff calculated)

 

2018-04-19 12:14 GMT+02:00 Sophie Kaleba <[hidden email]>:

 

Hi,

I got a timeout error during the upload because of my slow internet connexion. Hope this won't cause any problem.

I finally found time to commit this new primitive! If you spot any mistake, contact me!

I have updated the related methods in Squeak (updating previous senders of compare:with:collated so they call this primitive instead) + the tests methods but I can't commit to the repository. I can send the .st files to someone who does have the rights.

Sophie

Hi Sophie,

you can always commit to the inbox (http://source.squeak.org/inbox/).

cheers

 

2018-04-19 12:02 GMT+02:00 <[hidden email]>:

 
Sophie Kaleba uploaded a new version of VMMaker to project VM Maker:
http://source.squeak.org/VMMaker/VMMaker.oscog-sk.2367.mcz

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

Name: VMMaker.oscog-sk.2367
Author: sk
Time: 19 April 2018, 12:02:35.661622 pm
UUID: 0c2401e3-1450-4f73-8e81-958f50171595
Ancestors: VMMaker.oscog- nice.2366

** new primitive to compare strings (slang + JIT)
answers negative smi, 0 or positive smi (instead of 1, 2 or 3 in the MiscPlugin)

* Slang (primitiveCompareWith)
order is optionnal.
comparison loop performed in rawCompare: string1 length: strLength1 with: string2 length: strLength2 accessBlock: accessBlock

* JIT (genPrimitiveStringCompareWith)
the JIT primitive does not take order as parameter (assumed asciiOrder)
quick jump if one of the strings is empty

=============== Diff against VMMaker.oscog- nice.2366 ===============

Item was added:
+ ----- Method: CogObjectRepresentation>>genPrimitiveStringCompareWith (in category 'primitive generators') -----
+ genPrimitiveStringCompareWith
+       "subclasses override if they can"
+       ^UnimplementedPrimitive!

Item was added:
+ ----- Method: CogObjectRepresentationForSpur>>genPrimitiveStringCompareWith (in category 'primitive generators') -----
+ genPrimitiveStringCompareWith
+       "primitiveCompareWith:"
+       
+       | instr jump jumpAbove jumpIncorrectFormat1 jumpIncorrectFormat2 jumpIncorrectFormat3 jumpIncorrectFormat4 jumpMidFailure jumpSuccess minSizeReg string1CharOrByteSizeReg string2CharOrByteSizeReg string1Reg string2Reg |
+       
+       <var: #jumpIncorrectFormat1 type: #'AbstractInstruction *'>
+       <var: #jumpIncorrectFormat2 type: #'AbstractInstruction *'>
+       <var: #jumpIncorrectFormat3 type: #'AbstractInstruction *'>
+       <var: #jumpIncorrectFormat4 type: #'AbstractInstruction *'>
+       <var: #jumpAbove type: #'AbstractInstruction *'>
+       <var: #jumpSuccess type: #'AbstractInstruction *'>
+       <var: #jump type: #'AbstractInstruction *'>
+       <var: #jumpMidFailure type: #'AbstractInstruction *'>
+       
+       "I redefine those name to ease program comprehension"
+       string1Reg := ReceiverResultReg.
+       string2Reg := Arg0Reg.
+       string1CharOrByteSizeReg := Arg1Reg.
+       string2CharOrByteSizeReg := ClassReg.
+       minSizeReg := SendNumArgsReg.
+       
+       "Load arguments in reg"
+       cogit genLoadArgAtDepth: 0 into: string2Reg.
+       
+       "checks if string1 is a byteobject and get its size in bytes"
+       self genGetFormatOf: string1Reg into: TempReg.
+       cogit CmpCq: objectMemory firstByteFormat R: TempReg.
+       jumpIncorrectFormat1 := cogit JumpLess: 0.
+       cogit CmpCq: objectMemory firstCompiledMethodFormat R: TempReg.
+       jumpIncorrectFormat2 := cogit JumpAboveOrEqual: 0.
+               
+       self genGetNumSlotsOf: string1Reg into: string1CharOrByteSizeReg.
+       (cogit LogicalShiftLeftCq: objectMemory shiftForWord R: string1CharOrByteSizeReg).
+       cogit AndCq: objectMemory wordSize - 1 R: TempReg R: TempReg.
+       cogit SubR: TempReg R: string1CharOrByteSizeReg.
+       
+       "checks if string2 is a byteobject and get its size in bytes"
+       self genGetFormatOf: string2Reg into: TempReg.
+       cogit CmpCq: objectMemory firstByteFormat R: TempReg.
+       jumpIncorrectFormat3 := cogit JumpLess: 0.
+       cogit CmpCq: objectMemory firstCompiledMethodFormat R: TempReg.
+       jumpIncorrectFormat4 := cogit JumpAboveOrEqual: 0.
+               
+       self genGetNumSlotsOf: string2Reg into: string2CharOrByteSizeReg.
+       (cogit LogicalShiftLeftCq: objectMemory shiftForWord R: string2CharOrByteSizeReg).
+       cogit AndCq: objectMemory wordSize - 1 R: TempReg R: TempReg.
+       cogit SubR: TempReg R: string2CharOrByteSizeReg.
+       
+       "Type and number of arguments are correct"
+       "Compute the min"       
+       cogit CmpR: string1CharOrByteSizeReg R: string2CharOrByteSizeReg.
+       jumpAbove := cogit JumpBelow: 0.
+       cogit MoveR: string1CharOrByteSizeReg R: minSizeReg.
+       jump := cogit Jump: 0.
+       jumpAbove jmpTarget: (cogit MoveR: string2CharOrByteSizeReg R: minSizeReg).
+       jump jmpTarget: (cogit CmpCq: 0 R: minSizeReg).
+       jumpSuccess := cogit JumpZero: 0. "if one of the string is empty, no need to go through the comparing loop"
+       
+       "Compare the bytes"
+       cogit MoveCq: objectMemory baseHeaderSize  R: TempReg.
+       cogit AddCq: objectMemory baseHeaderSize R: minSizeReg.
+       
+       instr := cogit MoveXbr: TempReg R: string1Reg R: string1CharOrByteSizeReg.
+       cogit MoveXbr: TempReg R: string2Reg R: string2CharOrByteSizeReg.
+       cogit SubR: string2CharOrByteSizeReg R: string1CharOrByteSizeReg.
+       jumpMidFailure := cogit JumpNonZero: 0. "the 2 compared characters are different, exit the loop"
+       cogit AddCq: 1 R: TempReg.
+       cogit CmpR: TempReg R: minSizeReg.
+       cogit JumpNonZero: instr.
+       
+       "all bytes from 1 to minSize are equal"
+       self genGetNumBytesOf: string1Reg into: string1CharOrByteSizeReg.
+       self genGetNumBytesOf: string2Reg into: string2CharOrByteSizeReg.
+       jumpSuccess jmpTarget: (cogit SubR: string2CharOrByteSizeReg R: string1CharOrByteSizeReg).
+       jumpMidFailure  jmpTarget: (cogit MoveR: string1CharOrByteSizeReg R: ReceiverResultReg).       
+       self genConvertIntegerToSmallIntegerInReg: ReceiverResultReg.
+       cogit genPrimReturn.
+       
+       jumpIncorrectFormat4
+               jmpTarget: (jumpIncorrectFormat3
+                       jmpTarget: (jumpIncorrectFormat2
+                               jmpTarget: (jumpIncorrectFormat1 jmpTarget: cogit Label))).
+       
+       ^ CompletePrimitive!

Item was changed:
  ----- Method: Interpreter class>>initializePrimitiveTable (in category 'initialization') -----
(excessive size, no diff calculated)

Item was added:
+ ----- Method: InterpreterPrimitives>>primitiveCompareWith (in category 'string primitives') -----
+ primitiveCompareWith
+       "<string1> primitiveCompareWith: string2 [collated: order] "
+       <export: true>
+       
+       | string1 string2 order strLength1 strLength2 result |
+
+       "1 - fetch the parameters from the stack"       
+       (argumentCount = 0 or: [argumentCount > 2]) ifTrue:
+               [^self primitiveFailFor: PrimErrBadNumArgs].
+       argumentCount = 1
+                       ifFalse: "argCount must be 2"
+                               [order := self stackTop.
+                               (objectMemory isBytes: order) ifFalse: [^self primitiveFailFor: PrimErrBadArgument]].
+       string1 := self stackValue: argumentCount.
+       string2 := self stackValue: argumentCount - 1.
+                       
+       "2 - check their types - all parameters are ByteObject"
+       ((objectMemory isBytes: string1)
+       and: [objectMemory isBytes: string2 ])
+               ifFalse:
+                       [^self primitiveFailFor: PrimErrBadArgument].
+       
+       "3 - compare the strings"       
+       strLength1 := objectMemory numBytesOfBytes: string1.
+       strLength2 := objectMemory numBytesOfBytes: string2.
+       result := order
+               ifNil: [self rawCompare: string1 length: strLength1 with: string2 length: strLength2 accessBlock: [:str :index | objectMemory fetchByte: index ofObject: str ]]
+               ifNotNil:
+                       [self rawCompare: string1 length: strLength1 with: string2 length: strLength2 accessBlock: [:str :index | objectMemory fetchByte: (objectMemory fetchByte: index ofObject: str) +1 ofObject: order ]].
+       self pop: argumentCount + 1 thenPush: (objectMemory integerObjectOf: result)
+       
+
+
+       
+       
+       !

Item was added:
+ ----- Method: InterpreterPrimitives>>rawCompare:length:with:length:accessBlock: (in category 'string primitives') -----
+ rawCompare: string1 length: strLength1 with: string2 length: strLength2 accessBlock: accessBlock
+       | c1 c2 min |
+       <inline: true> "needs to be forced else slang does not inline it by default"
+       min := strLength1 min: strLength2.
+       0 to: min-1 do:
+               [:i | c1 := accessBlock value: string1 value: i.
+                       c2 := accessBlock value: string2 value: i.
+                       c1 = c2 ifFalse: [^c1 - c2]].
+       ^strLength1 - strLength2
+
+
+       
+       
+       !

Item was changed:
  ----- Method: SimpleStackBasedCogit class>>initializePrimitiveTableForSqueak (in category 'class initialization') -----
  initializePrimitiveTableForSqueak
        "Initialize the table of primitive generators.  This does not include normal primitives implemented in the coInterpreter.
         N.B. primitives that don't have an explicit arg count (the integer following the generator) may be variadic."
        "SimpleStackBasedCogit initializePrimitiveTableForSqueak"
        MaxCompiledPrimitiveIndex := self objectRepresentationClass wordSize = 8
                                                                                ifTrue: [555]
                                                                                ifFalse: [222].
        primitiveTable := CArrayAccessor on: (Array new: MaxCompiledPrimitiveIndex + 1).
        self table: primitiveTable from:
        #(      "Integer Primitives (0-19)"
                (1 genPrimitiveAdd                              1)
                (2 genPrimitiveSubtract                 1)
                (3 genPrimitiveLessThan         1)
                (4 genPrimitiveGreaterThan              1)
                (5 genPrimitiveLessOrEqual              1)
                (6 genPrimitiveGreaterOrEqual   1)
                (7 genPrimitiveEqual                    1)
                (8 genPrimitiveNotEqual         1)
                (9 genPrimitiveMultiply                 1)
                (10 genPrimitiveDivide                  1)
                (11 genPrimitiveMod                     1)
                (12 genPrimitiveDiv                             1)
                (13 genPrimitiveQuo                     1)
                (14 genPrimitiveBitAnd                  1)
                (15 genPrimitiveBitOr                   1)
                (16 genPrimitiveBitXor                  1)
                (17 genPrimitiveBitShift                        1)
                "(18 primitiveMakePoint)"
                "(19 primitiveFail)"                                    "Guard primitive for simulation -- *must* fail"

                "LargeInteger Primitives (20-39)"
                "(20 primitiveFail)"
                "(21 primitiveAddLargeIntegers)"
                "(22 primitiveSubtractLargeIntegers)"
                "(23 primitiveLessThanLargeIntegers)"
                "(24 primitiveGreaterThanLargeIntegers)"
                "(25 primitiveLessOrEqualLargeIntegers)"
                "(26 primitiveGreaterOrEqualLargeIntegers)"
                "(27 primitiveEqualLargeIntegers)"
                "(28 primitiveNotEqualLargeIntegers)"
                "(29 primitiveMultiplyLargeIntegers)"
                "(30 primitiveDivideLargeIntegers)"
                "(31 primitiveModLargeIntegers)"
                "(32 primitiveDivLargeIntegers)"
                "(33 primitiveQuoLargeIntegers)"
                "(34 primitiveBitAndLargeIntegers)"
                "(35 primitiveBitOrLargeIntegers)"
                "(36 primitiveBitXorLargeIntegers)"
                "(37 primitiveBitShiftLargeIntegers)"

                "Float Primitives (38-59)"
                "(38 genPrimitiveFloatAt)"
                "(39 genPrimitiveFloatAtPut)"
                (40 genPrimitiveAsFloat                                 0)
                (41 genPrimitiveFloatAdd                                1)
                (42 genPrimitiveFloatSubtract                   1)
                (43 genPrimitiveFloatLessThan                   1)
                (44 genPrimitiveFloatGreaterThan                1)
                (45 genPrimitiveFloatLessOrEqual                1)
                (46 genPrimitiveFloatGreaterOrEqual     1)
                (47 genPrimitiveFloatEqual                              1)
                (48 genPrimitiveFloatNotEqual                   1)
                (49 genPrimitiveFloatMultiply                   1)
                (50 genPrimitiveFloatDivide                             1)
                "(51 genPrimitiveTruncated)"
                "(52 genPrimitiveFractionalPart)"
                "(53 genPrimitiveExponent)"
                "(54 genPrimitiveTimesTwoPower)"
                (55 genPrimitiveFloatSquareRoot         0)
                "(56 genPrimitiveSine)"
                "(57 genPrimitiveArctan)"
                "(58 genPrimitiveLogN)"
                "(59 genPrimitiveExp)"

                "Subscript and Stream Primitives (60-67)"
                (60 genPrimitiveAt                              1)
                (61 genPrimitiveAtPut                   2)
                (62 genPrimitiveSize                    0)
                (63 genPrimitiveStringAt                1)
                (64 genPrimitiveStringAtPut             2)
                "The stream primitives no longer pay their way; normal Smalltalk code is faster."
                (65 genFastPrimFail)"was primitiveNext"
                (66 genFastPrimFail) "was primitiveNextPut"
                (67 genFastPrimFail) "was primitiveAtEnd"

                "StorageManagement Primitives (68-79)"
                (68 genPrimitiveObjectAt                        1)      "Good for debugger/InstructionStream performance"
                "(69 primitiveObjectAtPut)"
                (70 genPrimitiveNew                     0)
                (71 genPrimitiveNewWithArg      1)
                "(72 primitiveArrayBecomeOneWay)"               "Blue Book: primitiveBecome"
                "(73 primitiveInstVarAt)"
                "(74 primitiveInstVarAtPut)"
                (75 genPrimitiveIdentityHash    0)
                "(76 primitiveStoreStackp)"                                     "Blue Book: primitiveAsObject"
                "(77 primitiveSomeInstance)"
                "(78 primitiveNextInstance)"
                (79 genPrimitiveNewMethod       2)

                "Control Primitives (80-89)"
                "(80 primitiveFail)"                                                    "Blue Book: primitiveBlockCopy"
                "(81 primitiveFail)"                                                    "Blue Book: primitiveValue"
                "(82 primitiveFail)"                                                    "Blue Book: primitiveValueWithArgs"
                (83 genPrimitivePerform)
                "(84 primitivePerformWithArgs)"
                "(85 primitiveSignal)"
                "(86 primitiveWait)"
                "(87 primitiveResume)"
                "(88 primitiveSuspend)"
                "(89 primitiveFlushCache)"

                "(90 primitiveMousePoint)"
                "(91 primitiveTestDisplayDepth)"                        "Blue Book: primitiveCursorLocPut"
                "(92 primitiveSetDisplayMode)"                          "Blue Book: primitiveCursorLink"
                "(93 primitiveInputSemaphore)"
                "(94 primitiveGetNextEvent)"                            "Blue Book: primitiveSampleInterval"
                "(95 primitiveInputWord)"
                "(96 primitiveFail)"    "primitiveCopyBits"
                "(97 primitiveSnapshot)"
                "(98 primitiveStoreImageSegment)"
                "(99 primitiveLoadImageSegment)"
                "(100 primitivePerformInSuperclass)"            "Blue Book: primitiveSignalAtTick"
                "(101 primitiveBeCursor)"
                "(102 primitiveBeDisplay)"
                "(103 primitiveScanCharacters)"
                "(104 primitiveFail)"   "primitiveDrawLoop"
                (105 genPrimitiveStringReplace)
                "(106 primitiveScreenSize)"
                "(107 primitiveMouseButtons)"
                "(108 primitiveKbdNext)"
                "(109 primitiveKbdPeek)"


                "System Primitives (110-119)"
                (110 genPrimitiveIdentical 1)
                (111 genPrimitiveClass)                         "Support both class and Context>>objectClass:"
                "(112 primitiveBytesLeft)"
                "(113 primitiveQuit)"
                "(114 primitiveExitToDebugger)"
                "(115 primitiveChangeClass)"                                    "Blue Book: primitiveOopsLeft"
                "(116 primitiveFlushCacheByMethod)"
                "(117 primitiveExternalCall)"
                "(118 primitiveDoPrimitiveWithArgs)"
                "(119 primitiveFlushCacheSelective)"

                (148 genPrimitiveShallowCopy 0)                 "a.k.a. clone"

+               (158 genPrimitiveStringCompareWith 1)
                (159 genPrimitiveHashMultiply 0)

                (169 genPrimitiveNotIdentical 1)

                (170 genPrimitiveAsCharacter)                           "SmallInteger>>asCharacter, Character class>>value:"
                (171 genPrimitiveImmediateAsInteger 0)  "Character>>value SmallFloat64>>asInteger"

                "(173 primitiveSlotAt 1)"
                "(174 primitiveSlotAtPut 2)"
                (175 genPrimitiveIdentityHash   0)              "Behavior>>identityHash"

                "Old closure primitives"
                "(186 primitiveFail)" "was primitiveClosureValue"
                "(187 primitiveFail)" "was primitiveClosureValueWithArgs"

                "Perform method directly"
                "(188 primitiveExecuteMethodArgsArray)"
                "(189 primitiveExecuteMethod)"

                "Unwind primitives"
                "(195 primitiveFindNextUnwindContext)"
                "(196 primitiveTerminateTo)"
                "(197 primitiveFindHandlerContext)"
                (198 genFastPrimFail "primitiveMarkUnwindMethod")
                (199 genFastPrimFail "primitiveMarkHandlerMethod")

                "new closure primitives"
                "(200 primitiveClosureCopyWithCopiedValues)"
                (201 genPrimitiveClosureValue   0) "value"
                (202 genPrimitiveClosureValue   1) "value:"
                (203 genPrimitiveClosureValue   2) "value:value:"
                (204 genPrimitiveClosureValue   3) "value:value:value:"
                (205 genPrimitiveClosureValue   4) "value:value:value:value:"
                "(206 genPrimitiveClosureValueWithArgs)" "valueWithArguments:"

                (207 genPrimitiveFullClosureValue) "value[:value:value:value:] et al"
                "(208 genPrimitiveFullClosureValueWithArgs)" "valueWithArguments:"
                (209 genPrimitiveFullClosureValue) "valueNoContextSwitch[:value:] et al"

                "(210 primitiveContextAt)"
                "(211 primitiveContextAtPut)"
                "(212 primitiveContextSize)"

                "(218 primitiveDoNamedPrimitiveWithArgs)"
                "(219 primitiveFail)"   "reserved for Cog primitives"

                "(220 primitiveFail)"           "reserved for Cog primitives"

                (221 genPrimitiveClosureValue   0) "valueNoContextSwitch"
                (222 genPrimitiveClosureValue   1) "valueNoContextSwitch:"

                "SmallFloat primitives (540-559)"
                (541 genPrimitiveSmallFloatAdd                          1)
                (542 genPrimitiveSmallFloatSubtract                     1)
                (543 genPrimitiveSmallFloatLessThan                     1)
                (544 genPrimitiveSmallFloatGreaterThan          1)
                (545 genPrimitiveSmallFloatLessOrEqual          1)
                (546 genPrimitiveSmallFloatGreaterOrEqual               1)
                (547 genPrimitiveSmallFloatEqual                                1)
                (548 genPrimitiveSmallFloatNotEqual                     1)
                (549 genPrimitiveSmallFloatMultiply                             1)
                (550 genPrimitiveSmallFloatDivide                               1)
                "(551 genPrimitiveSmallFloatTruncated                   0)"
                "(552 genPrimitiveSmallFloatFractionalPart              0)"
                "(553 genPrimitiveSmallFloatExponent                    0)"
                "(554 genPrimitiveSmallFloatTimesTwoPower       1)"
                (555 genPrimitiveSmallFloatSquareRoot                   0)
                "(556 genPrimitiveSmallFloatSine                                0)"
                "(557 genPrimitiveSmallFloatArctan                              0)"
                "(558 genPrimitiveSmallFloatLogN                                0)"
                "(559 genPrimitiveSmallFloatExp                         0)"
        )!

Item was changed:
  ----- Method: StackInterpreter class>>initializePrimitiveTable (in category 'initialization') -----
(excessive size, no diff calculated)