Finer-grained constant cache invalidation (take 2)

This commit reintroduces finer-grained constant cache invalidation.
After 8008fb7 got merged, it was causing issues on token-threaded
builds (such as on Windows).

The issue was that when you're iterating through instruction sequences
and using the translator functions to get back the instruction structs,
you're either using `rb_vm_insn_null_translator` or
`rb_vm_insn_addr2insn2` depending if it's a direct-threading build.
`rb_vm_insn_addr2insn2` does some normalization to always return to
you the non-trace version of whatever instruction you're looking at.
`rb_vm_insn_null_translator` does not do that normalization.

This means that when you're looping through the instructions if you're
trying to do an opcode comparison, it can change depending on the type
of threading that you're using. This can be very confusing. So, this
commit creates a new translator function
`rb_vm_insn_normalizing_translator` to always return the non-trace
version so that opcode comparisons don't have to worry about different
configurations.

[Feature #18589]

1 files changed, 2 insertions, 2 deletions

diff --git a/test/ruby/test_rubyvm.rb b/test/ruby/test_rubyvm.rb
index 628317a0f8..d0b7cba341 100644
--- a/test/ruby/test_rubyvm.rb
+++ b/test/ruby/test_rubyvm.rb
@@ -4,11 +4,11 @@ require 'test/unit'
 class TestRubyVM < Test::Unit::TestCase
   def test_stat
     assert_kind_of Hash, RubyVM.stat
-    assert_kind_of Integer, RubyVM.stat[:global_constant_state]
+    assert_kind_of Integer, RubyVM.stat[:class_serial]
 
     RubyVM.stat(stat = {})
     assert_not_empty stat
-    assert_equal stat[:global_constant_state], RubyVM.stat(:global_constant_state)
+    assert_equal stat[:class_serial], RubyVM.stat(:class_serial)
   end
 
   def test_stat_unknown