Directly embed deopt idx instead of return address

Summary:
Take 2 of D97524722.

Adds an ifdef for lightweight frames and backs out the Ci_GEN_JIT_DATA_OFFSET_STATE changes.

Reviewed By: alexmalyshev

Differential Revision: D98528439

fbshipit-source-id: f7338ac27b120836051afaf5d1a77d12ccb1f0b0

Author: DinoV

Include/cinder/genobject_jit.h

@@ -23,16 +23,9 @@ typedef enum {
 } CiJITGenState;
 
 /* Offsets for fields in jit::GenFooterData for fast access from C code.
- * These values are verified by static_assert in context.h. */
-#if defined(__aarch64__)
-/* On aarch64, GenDataFooter has an extra savedReturnIP field after
- * returnAddress, shifting subsequent fields by 8 bytes. */
-#define Ci_GEN_JIT_DATA_OFFSET_STATE 40
-#define Ci_GEN_JIT_DATA_OFFSET_YIELD_POINT 32
-#else
+ * These values are verified by static_assert in runtime.h. */
 #define Ci_GEN_JIT_DATA_OFFSET_STATE 32
 #define Ci_GEN_JIT_DATA_OFFSET_YIELD_POINT 24
-#endif
 
 /* Functions for extracting the state for generator objects known to be JIT
  * controlled. Implemented as inline functions using hard-coded offsets for