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VMJittedLookupTest.class.st
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VMJittedLookupTest.class.st
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Class {
#name : #VMJittedLookupTest,
#superclass : #VMSimpleStackBasedCogitAbstractTest,
#instVars : [
'methodOop',
'selectorOop',
'receiver',
'receiverClass'
],
#category : #'VMMakerTests-JitTests'
}
{ #category : #tests }
VMJittedLookupTest >> installSelector: aSelectorOop method: aMethodOop inMethodDictionary: aMethodDictionary [
| anArrayOfMethods |
anArrayOfMethods := memory fetchPointer: MethodArrayIndex ofObject: aMethodDictionary.
memory
storePointer: (memory methodDictionaryHash: aSelectorOop mask: 11) + 2
ofObject: aMethodDictionary
withValue: aSelectorOop.
memory
storePointer: (memory methodDictionaryHash: aSelectorOop mask: 11)
ofObject: anArrayOfMethods
withValue: aMethodOop
]
{ #category : #tests }
VMJittedLookupTest >> setArrayClassIntoClassTable [
| aClass |
aClass := self
newClassInOldSpaceWithSlots: 0
instSpec: Array instSpec.
memory setHashBitsOf: aClass to: ClassArrayCompactIndex.
memory
storePointer: ClassArrayCompactIndex
ofObject: memory classTableFirstPage
withValue: aClass
]
{ #category : #tests }
VMJittedLookupTest >> setMessageClassIntoClassTable [
| aClass |
aClass := self
newClassInOldSpaceWithSlots: MessageSend allSlots size
instSpec: MessageSend instSpec.
memory setHashBitsOf: aClass to: ClassMessageCompactIndex.
memory
storePointer: ClassMessageCompactIndex
ofObject: memory classTableFirstPage
withValue: aClass
]
{ #category : #tests }
VMJittedLookupTest >> setUpClassAndMethod [
methodOop := methodBuilder newMethod buildMethod.
selectorOop := self
newClassInOldSpaceWithSlots: 0
instSpec: memory nonIndexablePointerFormat.
receiver := memory integerObjectOf: 56.
receiverClass := self setSmallIntegerClassIntoClassTable
]
{ #category : #tests }
VMJittedLookupTest >> setUpMethodDictionaryIn: aClass [
"2 instances variables the array of methods and the tally
and 12 entries to put elemetns of the collection"
| aMethodDictionary anArrayOfMethods |
aMethodDictionary := self
newObjectWithSlots: 2 + 12
format: MethodDictionary instSpec
classIndex: memory arrayClassIndexPun.
anArrayOfMethods := self
newObjectWithSlots: 12
format: Array instSpec
classIndex: memory arrayClassIndexPun.
memory
storePointer: MethodDictionaryIndex
ofObject: aClass
withValue: aMethodDictionary.
memory
storePointer: MethodArrayIndex
ofObject: aMethodDictionary
withValue: anArrayOfMethods.
]
{ #category : #tests }
VMJittedLookupTest >> testLookUpMNUShouldJItCompile [
| superclass superclassMethodDictionary foundMethod |
self setUpTrampolines.
cogit computeEntryOffsets.
self setUpClassAndMethod.
self setArrayClassIntoClassTable.
self setMessageClassIntoClassTable.
self setUpMethodDictionaryIn: receiverClass.
superclass := self
newClassInOldSpaceWithSlots: 0
instSpec: memory arrayFormat.
self setUpMethodDictionaryIn: superclass.
superclassMethodDictionary := memory fetchPointer: MethodDictionaryIndex ofObject: superclass.
memory storePointer: SuperclassIndex ofObject: receiverClass withValue: superclass.
self installSelector: selectorOop method: methodOop inMethodDictionary: superclassMethodDictionary.
interpreter methodDictLinearSearchLimit: 3.
interpreter setBreakSelector: nil.
interpreter messageSelector: selectorOop.
"Install the selector as a DNU selector"
memory splObj: SelectorDoesNotUnderstand put: selectorOop.
foundMethod := interpreter mnuMethodOrNilFor: receiver.
self assert: foundMethod equals: methodOop
]
{ #category : #tests }
VMJittedLookupTest >> testLookUpMNUWithAnyNonMethodObjectShouldNotJItCompile [
| superclass superclassMethodDictionary foundMethod |
self setUpTrampolines.
cogit computeEntryOffsets.
self setUpClassAndMethod.
self setArrayClassIntoClassTable.
self setMessageClassIntoClassTable.
self setUpMethodDictionaryIn: receiverClass.
superclass := self
newClassInOldSpaceWithSlots: 0
instSpec: memory arrayFormat.
self setUpMethodDictionaryIn: superclass.
superclassMethodDictionary := memory fetchPointer: MethodDictionaryIndex ofObject: superclass.
memory storePointer: SuperclassIndex ofObject: receiverClass withValue: superclass.
self installSelector: selectorOop method: (memory integerValueOf: 37) inMethodDictionary: superclassMethodDictionary.
interpreter methodDictLinearSearchLimit: 3.
interpreter setBreakSelector: nil.
interpreter messageSelector: selectorOop.
"Install the selector as a DNU selector"
memory splObj: SelectorDoesNotUnderstand put: selectorOop.
foundMethod := interpreter mnuMethodOrNilFor: receiver.
self assert: foundMethod isNil
]