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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/112366] ICE in vectorizable_live_operation,
 at tree-vect-loop.cc:10798
Date: Fri, 03 Nov 2023 10:18:37 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D112366

--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
(gdb) p code
$1 =3D BIT_XOR_EXPR

OK, that's somewhat unexpected ;)  Reduced testcase:

int sm3_compress___trans_tmp_1, sm3_compress_x_6;
extern int sm3_compress_x[];
void sm3_compress()
{
  for (int i =3D 0; i < 12; ++i)
    {
      int tt2 =3D sm3_compress_x[4] ^ sm3_compress_x[5] ^ sm3_compress_x_6;
      sm3_compress___trans_tmp_1 =3D sm3_compress_x[5];
      sm3_compress_x_6 =3D sm3_compress___trans_tmp_1;
      sm3_compress_x[5] =3D sm3_compress_x[4];
      long rd;
      __asm__("" : "=3Dr"(rd) : ""(tt2));
      sm3_compress_x[4] =3D rd;
    }
}=