Implement Objects on VWA

This commit implements Objects on Variable Width Allocation. This allows
Objects with more ivars to be embedded (i.e. contents directly follow the
object header) which improves performance through better cache locality.

1 files changed, 5 insertions, 1 deletions

diff --git a/yjit/bindgen/src/main.rs b/yjit/bindgen/src/main.rs
index 5d30d7b288..f54addc795 100644
--- a/yjit/bindgen/src/main.rs
+++ b/yjit/bindgen/src/main.rs
@@ -62,6 +62,9 @@ fn main() {
         // Import YARV bytecode instruction constants
         .allowlist_type("ruby_vminsn_type")
 
+        // From include/ruby/internal/config.h
+        .allowlist_var("USE_RVARGC")
+
         // From include/ruby/internal/intern/string.h
         .allowlist_function("rb_utf8_str_new")
         .allowlist_function("rb_str_buf_append")
@@ -135,7 +138,8 @@ fn main() {
 
         // From include/ruby/internal/core/robject.h
         .allowlist_type("ruby_robject_flags")
-        .allowlist_type("ruby_robject_consts")
+        // .allowlist_type("ruby_robject_consts") // Removed when USE_RVARGC
+        .allowlist_var("ROBJECT_OFFSET_.*")
 
         // From include/ruby/internal/core/rarray.h
         .allowlist_type("ruby_rarray_flags")