YJIT: implement codegen for `String#empty?` (#7148)

YJIT: implement codegen for String#empty?

1 files changed, 6 insertions, 0 deletions

diff --git a/yjit.c b/yjit.c
index db0a5f5978..a1710f9c05 100644
--- a/yjit.c
+++ b/yjit.c
@@ -37,6 +37,12 @@
 
 #include <errno.h>
 
+// Field offsets for the RString struct
+enum rstring_offsets {
+    RUBY_OFFSET_RSTRING_AS_HEAP_LEN = offsetof(struct RString, as.heap.len),
+    RUBY_OFFSET_RSTRING_EMBED_LEN = offsetof(struct RString, as.embed.len),
+};
+
 // We need size_t to have a known size to simplify code generation and FFI.
 // TODO(alan): check this in configure.ac to fail fast on 32 bit platforms.
 STATIC_ASSERT(64b_size_t, SIZE_MAX == UINT64_MAX);