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gauss:rubinius brian$ rm -rf rdoc-output; time bin/rbx -S rdoc --all --force-update --threads=1 --output rdoc-output benchmark/app/rdoc-2.4.3/lib > rdoc.txt

Generating Darkfish...

real    1m0.413s
user    0m56.823s
sys     0m0.702s
gauss:rubinius brian$ cat rdoc.txt | grep 'size 0' | wc -l
   51796
gauss:rubinius brian$ cat rdoc.txt | grep 'size 1' | wc -l

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ALIAS
AND
ARGS
ARGSCAT
ARGSPUSH
ARRAY
ATTRASGN
BACK_REF
BEGIN
BLOCK

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An exception occurred running /home/brixen/devel/rubinius/bin/rails
    Unable to read string (PrimitiveFailure)

Backtrace:
      MemoryPointer#read_string_length at kernel/platform/memorypointer.rb:155
             MemoryPointer#read_string at kernel/platform/memorypointer.rb:165
                     Iconv#get_success at /home/brixen/devel/rubinius/lib/iconv.rb:122
                           Iconv#iconv at /home/brixen/devel/rubinius/lib/iconv.rb:219
                           Iconv#close at /home/brixen/devel/rubinius/lib/iconv.rb:76
                            Iconv.open at /home/brixen/devel/rubinius/lib/iconv.rb:90

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if true
  a = 1
else
  a = 2
end

p a

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    sup = Class.new do
      def a; "a"; end
      def b; "b"; end
    end

    sub = Class.new(sup) do
      [:a, :b].each do |name|
        define_method name do
          super()
        end

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11:57   nicksieger >> compile time to get the field names, yes
11:57   evan >> well sort of
11:57   evan >> i'd like that to work
11:57   nicksieger >> assuming they don't change betw. platforms
11:58   evan >> but it doesn't work all the time
11:58   wycats >> evan: in what case doesn't it work?
11:58   evan >> some platforms put fields of different names in structs
11:58   brixen >> yep
11:58   wycats >> wot
11:58   evan >> sounds stupid, but it happens

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$ bin/rbx -Xprofiler.graph -r timeit -e 'require "melbourne"; require "profile"; timeit { ast = File.to_ast "lib/ruby_parser.rb"; c = Compiler.new(Compiler::Generator); node = Compiler::Node::Script.new(c); node.body = ast; node.to_description(:__script__) }'
18.229345
index  % time     self  children         called       name
----------------------------------------------------------
                  0.00     17.52       4642/7722           Compiler::Generator#find_literal [43]
[1]       2.9     6.02     11.50       4642           Array#index [1]
                  1.01      0.00    8305023/8364281        Array::Iterator#next [5]
                  0.96      0.00    8301943/8340385        Array::Iterator#item [6]
                  3.00     12.46    5205490/5586425        String#== [2]
                  0.28     13.42     709631/709631         Fixnum#== [10]

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class Object
  def hash_class
    RBXHash
  end
end
gauss:rubinius brian$ cat hash.rb 
Undefined = Object.new
class Type
  def self.coerce_to obj, klass, method
    r = obj.send method

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def fib(n)
  return n if n < 2
  fib(n-1) + fib(n-2)
end

Benchmark.bm do |x|
  x.report { fib 40 }
end

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Running all benchmarks in benchmark/app
  Writing report to benchmark/results/rbx-jit-03-09-2009-0405.yaml
  Running bm_gem_install_local.rb
rbx: vm/external_libs/llvm/include/llvm/Instructions.h:723: llvm::ICmpInst::ICmpInst(llvm::CmpInst::Predicate, llvm::Value*, llvm::Value*, const llvm::Twine&): Assertion `getOperand(0)->getType() == getOperand(1)->getType() && "Both operands to ICmp instruction are not of the same type!"' failed.
sh: line 1: 17927 Aborted                 rbx -Xjit.enabled -S gem install --local --install-dir rdoc-gem-local --bindir rdoc-gem-local --no-rdoc --no-ri --ignore-dependencies rdoc-2.4.3.gem
rbx: vm/external_libs/llvm/include/llvm/Instructions.h:723: llvm::ICmpInst::ICmpInst(llvm::CmpInst::Predicate, llvm::Value*, llvm::Value*, const llvm::Twine&): Assertion `getOperand(0)->getType() == getOperand(1)->getType() && "Both operands to ICmp instruction are not of the same type!"' failed.
sh: line 1: 17932 Aborted                 rbx -Xjit.enabled -S gem install --local --install-dir