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The Trunk: Compiler-nice.354.mcz

commits-2
Nicolas Cellier uploaded a new version of Compiler to project The Trunk:
http://source.squeak.org/trunk/Compiler-nice.354.mcz

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

Name: Compiler-nice.354
Author: nice
Time: 26 April 2017, 11:47:32.330583 pm
UUID: 59611875-6e84-499b-88af-e118535a2c14
Ancestors: Compiler-eem.353

Don't decompile obsolete compiled forms for braces {} (braceWith: & friends) nor blocks [] (closureCopy:copiedValues:)

=============== Diff against Compiler-eem.353 ===============

Item was removed:
- ----- Method: BraceNode>>matchBraceWithReceiver:selector:arguments: (in category 'initialize-release') -----
- matchBraceWithReceiver: receiver selector: selector arguments: arguments
-
- selector = (self selectorForShortForm: arguments size)
- ifFalse: [^ nil "no match"].
-
- "Appears to be a short form brace construct"
- self elements: arguments!

Item was removed:
- ----- Method: BraceNode>>selectorForShortForm: (in category 'code generation') -----
- selectorForShortForm: nElements
-
- nElements > 4 ifTrue: [^ nil].
- ^ #(braceWithNone braceWith: braceWith:with:
- braceWith:with:with: braceWith:with:with:with:) at: nElements + 1!

Item was changed:
  ----- Method: Decompiler>>send:super:numArgs: (in category 'instruction decoding') -----
  send: selector super: superFlag numArgs: numArgs
 
  | args rcvr selNode msgNode messages |
  args := Array new: numArgs.
  (numArgs to: 1 by: -1) do:
  [:i | args at: i put: stack removeLast].
  rcvr := stack removeLast.
  superFlag ifTrue: [rcvr := constructor codeSuper].
+ selNode := constructor codeAnySelector: selector.
+ rcvr == CascadeFlag
+ ifTrue:
+ ["May actually be a cascade or an ifNil: for value."
+ self willJumpIfFalse
+ ifTrue: "= generated by a case macro"
+ [selector == #= ifTrue:
+ [" = signals a case statement..."
+ statements addLast: args first.
+ stack addLast: rcvr. "restore CascadeFlag"
+ ^ self].
+ selector == #== ifTrue:
+ [" == signals an ifNil: for value..."
+ stack removeLast; removeLast.
+ rcvr := stack removeLast.
+ stack addLast: IfNilFlag;
+ addLast: (constructor
+ codeMessage: rcvr
+ selector: selNode
+ arguments: args).
+ ^ self]]
+ ifFalse:
+ [(self willJumpIfTrue and: [selector == #==]) ifTrue:
+ [" == signals an ifNotNil: for value..."
+ stack removeLast; removeLast.
+ rcvr := stack removeLast.
+ stack addLast: IfNilFlag;
+ addLast: (constructor
+ codeMessage: rcvr
+ selector: selNode
+ arguments: args).
+ ^ self]].
+ msgNode := constructor
+ codeCascadedMessage: selNode
+ arguments: args.
+ stack last == CascadeFlag ifFalse:
+ ["Last message of a cascade"
+ statements addLast: msgNode.
+ messages := self popTo: stack removeLast.  "Depth saved by first dup"
- (#closureCopy:copiedValues: == selector
- and: [self checkForClosureCopy: rcvr arguments: args]) ifFalse:
- [selNode := constructor codeAnySelector: selector.
- rcvr == CascadeFlag
- ifTrue:
- ["May actually be a cascade or an ifNil: for value."
- self willJumpIfFalse
- ifTrue: "= generated by a case macro"
- [selector == #= ifTrue:
- [" = signals a case statement..."
- statements addLast: args first.
- stack addLast: rcvr. "restore CascadeFlag"
- ^ self].
- selector == #== ifTrue:
- [" == signals an ifNil: for value..."
- stack removeLast; removeLast.
- rcvr := stack removeLast.
- stack addLast: IfNilFlag;
- addLast: (constructor
- codeMessage: rcvr
- selector: selNode
- arguments: args).
- ^ self]]
- ifFalse:
- [(self willJumpIfTrue and: [selector == #==]) ifTrue:
- [" == signals an ifNotNil: for value..."
- stack removeLast; removeLast.
- rcvr := stack removeLast.
- stack addLast: IfNilFlag;
- addLast: (constructor
- codeMessage: rcvr
- selector: selNode
- arguments: args).
- ^ self]].
  msgNode := constructor
+ codeCascade: stack removeLast
+ messages: messages]]
+ ifFalse:
+ [msgNode := constructor
+ codeMessage: rcvr
+ selector: selNode
+ arguments: args].
+ stack addLast: msgNode!
- codeCascadedMessage: selNode
- arguments: args.
- stack last == CascadeFlag ifFalse:
- ["Last message of a cascade"
- statements addLast: msgNode.
- messages := self popTo: stack removeLast.  "Depth saved by first dup"
- msgNode := constructor
- codeCascade: stack removeLast
- messages: messages]]
- ifFalse:
- [msgNode := constructor
- codeMessage: rcvr
- selector: selNode
- arguments: args].
- stack addLast: msgNode]!

Item was changed:
  ----- Method: DecompilerConstructor>>codeMessage:selector:arguments: (in category 'constructor') -----
  codeMessage: receiver selector: selector arguments: arguments
  | symbol |
  symbol := selector key.
- (BraceNode new
- matchBraceWithReceiver: receiver
- selector: symbol
- arguments: arguments) ifNotNil: [:node| ^node].
  (self
  decodeLiteralVariableValueDereferenceWithReceiver: receiver
  selector: symbol
  arguments: arguments) ifNotNil: [:node| ^node].
  (self decodeIfNilWithReceiver: receiver
  selector: symbol
  arguments: arguments) ifNotNil: [:node| ^node].
  ^MessageNode new
  receiver: receiver selector: selector
  arguments: arguments
  precedence: symbol precedence!


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