That was introduced in commit
42db504c2fb2b460e24ca0e73b8559fc33b3cf33,
over 15 years ago!
gcc/ChangeLog:
* config/xtensa/xtensa.h (TARGET_SMALL_REGISTER_CLASSES_FOR_MODE_P):
Change "Xtrnase" in the comment to "Xtensa".
#define INDEX_REG_CLASS NO_REGS
/* The small_register_classes_for_mode_p hook must always return true for
- Xtrnase, because all of the 16 AR registers may be explicitly used in
+ Xtensa, because all of the 16 AR registers may be explicitly used in
the RTL, as either incoming or outgoing arguments. */
#define TARGET_SMALL_REGISTER_CLASSES_FOR_MODE_P hook_bool_mode_true