[Help-smalltalk] STCompiler repeats evaluation of "receiver" for CascadeNodes

[Stephen Compall]

Have a look:

GNU Smalltalk ready

st> PackageLoader fileInPackage: 'Compiler'!
...
st> UndefinedObject compile: 'scTest (1 + 2) negated; yourself'!
st> (UndefinedObject >> #scTest) inspect!
An instance of CompiledMethod
  header: 64
  Header Flags:
    flags: 0
    primitive index: 0
    number of arguments: 0
    number of temporaries: 0
    number of literals: 0
    needed stack slots: 8
  descriptor: a MethodInfo
  byte codes: [
    [1] push 1
    [3] push 2
        send 1 args message #+
    [5] dup stack top
        send 0 args message #negated
    [7] pop stack top
    [9] push 1
   [11] push 2
        send 1 args message #+
   [13] send 0 args message #yourself
   [15] push self
        return stack top
  ]

I am using 2.3 on GNU/Linux x86.  This does not happen for the standard
compiler.

-- 
Stephen Compall
http://scompall.nocandysw.com/blog

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