[Bug target/99025] New: [11 Regression] ICE Segmentation fault since r11-6351-g12ae2bc70846a2be

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99025

            Bug ID: 99025
           Summary: [11 Regression] ICE Segmentation fault since
                    r11-6351-g12ae2bc70846a2be
           Product: gcc
           Version: 11.0
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: marxin at gcc dot gnu.org
                CC: wwwhhhyyy333 at gmail dot com
  Target Milestone: ---
              Host: x86_64-linux-gnu

The following ICEs, reduced from postgresql package:

$ cat pg_proc.i
long ProcedureCreate_values[16];
int ProcedureCreate_X;
union {
  float value;
  int retval;
} ProcedureCreate_myunion;

void
ProcedureCreate() {
  ProcedureCreate_myunion.value = ProcedureCreate_X;
  ProcedureCreate_values[6 - 1] = ProcedureCreate_myunion.retval;
  float X;
  union {
    float value;
    int retval;
  } myunion;
  myunion.value = X;
  ProcedureCreate_values[7 - 1] = myunion.retval;
}

$ gcc pg_proc.i -c -O3 -march=haswell
during RTL pass: expand
pg_proc.i: In function ‘ProcedureCreate’:
pg_proc.i:19:1: internal compiler error: Segmentation fault
   19 | }
      | ^
0xe7b97a crash_signal
        /home/marxin/Programming/gcc/gcc/toplev.c:327
0xcb5b3b mark_jump_label_1
        /home/marxin/Programming/gcc/gcc/jump.c:1097
0xcb5bd3 mark_jump_label_1
        /home/marxin/Programming/gcc/gcc/jump.c:1221
0xcb5bd3 mark_jump_label_1
        /home/marxin/Programming/gcc/gcc/jump.c:1221
0xcb5bd3 mark_jump_label_1
        /home/marxin/Programming/gcc/gcc/jump.c:1221
0xcb605d mark_all_labels
        /home/marxin/Programming/gcc/gcc/jump.c:332
0xcb605d rebuild_jump_labels_1
        /home/marxin/Programming/gcc/gcc/jump.c:74
0x9d36b4 execute
        /home/marxin/Programming/gcc/gcc/cfgexpand.c:6779
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with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
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