[Bug target/112681] [14 Regression] ICE: in extract_insn, at recog.cc:2804 (unrecognizable insn) with -O2 -mfma -mno-sse4.2 and memcmp() since r14-5747

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112681

--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Or maybe better
--- gcc/config/i386/i386-expand.cc.jj   2023-11-21 09:31:35.792395304 +0100
+++ gcc/config/i386/i386-expand.cc      2023-11-23 20:57:57.128721762 +0100
@@ -2453,7 +2453,8 @@ ix86_expand_branch (enum rtx_code code,
          /* Generate XOR since we can't check that one operand is zero
             vector.  */
          tmp = gen_reg_rtx (mode);
-         emit_insn (gen_rtx_SET (tmp, gen_rtx_XOR (mode, op0, op1)));
+         rtx ops[3] = { tmp, op0, op1 };
+         ix86_expand_vector_logical_operator (XOR, mode, ops);
          tmp = gen_lowpart (p_mode, tmp);
          emit_insn (gen_rtx_SET (gen_rtx_REG (CCZmode, FLAGS_REG),
                                  gen_rtx_UNSPEC (CCZmode,