Make it as clear as possible that RubyVM is MRI-specific and only exists on MRI (#2113) [ci skip]

* Make it clear as possible that RubyVM is MRI-specific and only exists on MRI

* See [Bug #15743].
* Use "CRuby VM" instead of "Ruby VM" for clarity.

* Use YARV rather than "CRuby VM" for documenting RubyVM::InstructionSequence

* Avoid introducing a new "CRuby VM" term in documentation

1 files changed, 4 insertions, 2 deletions

diff --git a/iseq.c b/iseq.c
index 7f1e2203cb..5c63922b0d 100644
--- a/iseq.c
+++ b/iseq.c
@@ -3456,14 +3456,14 @@ succ_index_lookup(const struct succ_index_table *sd, int x)
  *  Document-class: RubyVM::InstructionSequence
  *
  *  The InstructionSequence class represents a compiled sequence of
- *  instructions for the Ruby Virtual Machine. Not all implementations of Ruby
+ *  instructions for the Virtual Machine used in MRI. Not all implementations of Ruby
  *  may implement this class, and for the implementations that implement it,
  *  the methods defined and behavior of the methods can change in any version.
  *
  *  With it, you can get a handle to the instructions that make up a method or
  *  a proc, compile strings of Ruby code down to VM instructions, and
  *  disassemble instruction sequences to strings for easy inspection. It is
- *  mostly useful if you want to learn how the Ruby VM works, but it also lets
+ *  mostly useful if you want to learn how YARV works, but it also lets
  *  you control various settings for the Ruby iseq compiler.
  *
  *  You can find the source for the VM instructions in +insns.def+ in the Ruby
@@ -3472,6 +3472,8 @@ succ_index_lookup(const struct succ_index_table *sd, int x)
  *  The instruction sequence results will almost certainly change as Ruby
  *  changes, so example output in this documentation may be different from what
  *  you see.
+ *
+ *  Of course, this class is MRI specific.
  */
 
 void