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* [Bug tree-optimization/101242] New: Segfault in SLP vectorizor after 2ad71efb5de
@ 2021-06-28 13:30 jamborm at gcc dot gnu.org
  2021-06-28 13:32 ` [Bug tree-optimization/101242] " jamborm at gcc dot gnu.org
                   ` (8 more replies)
  0 siblings, 9 replies; 10+ messages in thread
From: jamborm at gcc dot gnu.org @ 2021-06-28 13:30 UTC (permalink / raw)
  To: gcc-bugs

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101242

            Bug ID: 101242
           Summary: Segfault in SLP vectorizor after 2ad71efb5de
           Product: gcc
           Version: 12.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: jamborm at gcc dot gnu.org
                CC: rguenth at gcc dot gnu.org
  Target Milestone: ---
              Host: x86_64-linux
            Target: x86_64-linux

Since commit 2ad71efb5de (fix BB reduc permute elide with life stmts), the
following testcase (reduced from 433.milc) ICEs for me when compiled at -Ofast
(on x86_64-linux with generic march):

typedef struct {
  double real;
  double imag;
} complex;
typedef struct {
  complex e[3][3];
} su3_matrix;
su3_matrix check_su3_c;
double check_su3_ar, check_su3_ari, check_su3_max;
int arireturn();
int check_su3() {
  check_su3_ar = check_su3_c.e[0][0].real * check_su3_c.e[1][0].real +
                 check_su3_c.e[0][0].imag * check_su3_c.e[1][0].imag +
                 check_su3_c.e[0][1].real * check_su3_c.e[1][1].real +
                 check_su3_c.e[0][1].imag * check_su3_c.e[1][1].imag +
                 check_su3_c.e[0][2].real * check_su3_c.e[1][2].real +
                 check_su3_c.e[0][2].imag * check_su3_c.e[1][2].imag;
  check_su3_max = check_su3_c.e[0][0].real * check_su3_c.e[2][0].real +
                  check_su3_c.e[0][0].imag * check_su3_c.e[2][0].imag +
                  check_su3_c.e[0][1].real * check_su3_c.e[2][1].real +
                  check_su3_c.e[0][1].imag * check_su3_c.e[2][1].imag +
                  check_su3_c.e[0][2].real * check_su3_c.e[2][2].real +
                  check_su3_c.e[0][2].imag * check_su3_c.e[2][2].imag;
  check_su3_ari = check_su3_ar;
  if (check_su3_ari)
    check_su3_max = check_su3_c.e[1][0].real * check_su3_c.e[2][0].real +
                    check_su3_c.e[1][0].imag * check_su3_c.e[2][0].imag +
                    check_su3_c.e[1][1].real * check_su3_c.e[2][1].real +
                    check_su3_c.e[1][1].imag * check_su3_c.e[2][1].imag +
                    check_su3_c.e[1][2].real * check_su3_c.e[2][2].real +
                    check_su3_c.e[1][2].imag * check_su3_c.e[2][2].imag;
  if (check_su3_max)
    arireturn();
  return 0;
}

^ permalink raw reply	[flat|nested] 10+ messages in thread
end of thread, other threads:[~2021-06-29  8:36 UTC | newest]

Thread overview: 10+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-06-28 13:30 [Bug tree-optimization/101242] New: Segfault in SLP vectorizor after 2ad71efb5de jamborm at gcc dot gnu.org
2021-06-28 13:32 ` [Bug tree-optimization/101242] " jamborm at gcc dot gnu.org
2021-06-28 13:34 ` [Bug tree-optimization/101242] Segfault in SLP vectorizor after g:2ad71efb5de marxin at gcc dot gnu.org
2021-06-28 17:32 ` jamborm at gcc dot gnu.org
2021-06-28 21:40 ` dcb314 at hotmail dot com
2021-06-29  7:06 ` rguenth at gcc dot gnu.org
2021-06-29  7:51 ` dcb314 at hotmail dot com
2021-06-29  8:35 ` cvs-commit at gcc dot gnu.org
2021-06-29  8:35 ` rguenth at gcc dot gnu.org
2021-06-29  8:36 ` rguenth at gcc dot gnu.org

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