[Bug target/92865] [10 Regression] error: unrecognizable insn: in extract_insn, at recog.c:2294 since r279107

[crazylht at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92865

--- Comment #6 from Hongtao.liu <crazylht at gmail dot com> ---
The missing point of my patch is for 512-bit vector compare, integer mask
vector compare still should be used even with target_xop, that's the root cause
of this issue.

Refer to this part.
---------------
-  if (GET_MODE_SIZE (cmp_ops_mode) == 64)
+  if (ix86_valid_mask_cmp_mode (cmp_ops_mode))
     {
       unsigned int nbits = GET_MODE_NUNITS (cmp_ops_mode);
-      cmp_mode = int_mode_for_size (nbits, 0).require ();
       maskcmp = true;
+      cmp_mode = nbits > 8 ? int_mode_for_size (nbits, 0).require () :
E_QImode;
     }
   else
     cmp_mode = cmp_ops_mode;
@@ -3461,37 +3484,6 @@ ix86_expand_sse_cmp (rtx dest, enum rtx_code code, rtx
cmp_op0, rtx cmp_op1,
       || (op_false && reg_overlap_mentioned_p (dest, op_false)))
     dest = gen_reg_rtx (maskcmp ? cmp_mode : mode);

-  /* Compare patterns for int modes are unspec in AVX512F only.  */
-  if (maskcmp && (code == GT || code == EQ))
-    {
-      rtx (*gen)(rtx, rtx, rtx);
-
-      switch (cmp_ops_mode)
-       {
-       case E_V64QImode:
-         gcc_assert (TARGET_AVX512BW);
-         gen = code == GT ? gen_avx512bw_gtv64qi3 : gen_avx512bw_eqv64qi3_1;
-         break;
-       case E_V32HImode:
-         gcc_assert (TARGET_AVX512BW);
-         gen = code == GT ? gen_avx512bw_gtv32hi3 : gen_avx512bw_eqv32hi3_1;
-         break;
-       case E_V16SImode:
-         gen = code == GT ? gen_avx512f_gtv16si3 : gen_avx512f_eqv16si3_1;
-         break;
-       case E_V8DImode:
-         gen = code == GT ? gen_avx512f_gtv8di3 : gen_avx512f_eqv8di3_1;
-         break;
-       default:
-         gen = NULL;
-       }
-
-      if (gen)
-       {
-         emit_insn (gen (dest, cmp_op0, cmp_op1));
-         return dest;
-       }
-    }
   x = gen_rtx_fmt_ee (code, cmp_mode, cmp_op0, cmp_op1);

   if (cmp_mode != mode && !maskcmp)
-------------------------