instead of st_table.

* iseq.c (prepare_iseq_build): don't allocate ivar_cache_table
  until it has at least one element.

* iseq.c (compile_data_free): free ivar_cache_table only if it
  is allocated.

* compile.c (get_ivar_ic_value): allocate if the table is not
  allocated yet.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@55002 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

	  instance variable accesses. Reducing memory consumption,
	  rasing cache hit rate and rasing branch prediction hit rate
	  are expected. A part of [Bug #12274].

	* iseq.h (struct iseq_compile_data): introduce instance
	  variable IC table for sharing.

	* iseq.c (prepare_iseq_build, compile_data_free):
	  construct/destruct above table.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@54976 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

* iseq.c (prepare_iseq_build): enable coverage by coverage_enabled
  option, not by parse_in_eval flag in the thread context.
* iseq.h (rb_compile_option_struct): add coverage_enabled flag.
* parse.y (yycompile0): set coverage_enabled flag if coverage
  array is made.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@54081 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

* iseq.h (rb_compile_option_struct): turn boolean flags to bit
  fields.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@54078 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

* iseq.h (iseq_mark_ary_index): get rid of trailing comma and name
  the magic number for iseq_mark_ary_create.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@53905 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

  and a pre-compilation/runtime loader sample.
  [Feature #11788]

* iseq.c: add new methods:
  * RubyVM::InstructionSequence#to_binary_format(extra_data = nil)
  * RubyVM::InstructionSequence.from_binary_format(binary)
  * RubyVM::InstructionSequence.from_binary_format_extra_data(binary)

* compile.c: implement body of this new feature.

* load.c (rb_load_internal0), iseq.c (rb_iseq_load_iseq):
  call RubyVM::InstructionSequence.load_iseq(fname) with
  loading script name if this method is defined.

  We can return any ISeq object as a result value.
  Otherwise loading will be continue as usual.

  This interface is not matured and is not extensible.
  So that we don't guarantee the future compatibility of this method.
  Basically, you should'nt use this method.

* iseq.h: move ISEQ_MAJOR/MINOR_VERSION (and some definitions)
  from iseq.c.

* encoding.c (rb_data_is_encoding), internal.h: added.

* vm_core.h: add several supports for lazy load.
  * add USE_LAZY_LOAD macro to specify enable or disable of
    this feature.
  * add several fields to rb_iseq_t.
  * introduce new macro rb_iseq_check().

* insns.def: some check for lazy loading feature.

* vm_insnhelper.c: ditto.

* proc.c: ditto.

* vm.c: ditto.

* test/lib/iseq_loader_checker.rb: enabled iff suitable
  environment variables are provided.

* test/runner.rb: enable lib/iseq_loader_checker.rb.

* sample/iseq_loader.rb: add sample compiler and loader.

    $ ruby sample/iseq_loader.rb [dir]

  will compile all ruby scripts in [dir].
  With default setting, this compile creates *.rb.yarb files
  in same directory of target .rb scripts.

    $ ruby -r sample/iseq_loader.rb [app]

  will run with enable to load compiled binary data.




git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@52949 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

* error.c (name_err_local_variables): new method
  NameError#local_variables for internal use only.
  [Feature #11777]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@52942 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

  Fields in rb_iseq_t::variable_body are contained by
  rb_iseq_t::body::mark_ary (hidden Array object).

  Index 0 to 2 of mark_ary are reserved by these objects.

* iseq.c: catch up this fix.

* compile.c (rb_iseq_original_iseq): trivial rewrite.




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  ISEQ_ORIGINAL_ISEQ_ALLOC() macro.

* compile.c: use them to access original iseq buffer.

* iseq.c: ditto.

* vm_core.h: rename iseq field to support this fix.




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* compile.c (iseq_compile_each): use it.

* vm_core.h: rename flip_cnt field to support this fix.




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