[Bug target/101058] [12 Regression] ICE in extract_insn, at recog.c:2770 since r12-1215-g8d7dae0eb366a88a

[jakub at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101058

--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Though, when this *punpckwd define_insn_and_split handles all possible constant
permutations for V2HImode, shouldn't ix86_vectorize_vec_perm_const say so:
     case E_V2HImode:
       if (!TARGET_SSE2)
         return false;
+      /* All implementable with *punpckwd.  */
+      if (d.testing_p)
+        return true;
       break;
?