[Bug target/118776] [15 regression] ICE when building xvid-1.3.7 with LTO (extract_insn, at recog.cc:2882)

[sjames at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118776

--- Comment #5 from Sam James <sjames at gcc dot gnu.org> ---
bitstream.i:
```
typedef struct {
  int quant_type;
  short *mpeg_quant_matrices
} DECODER;
char BitstreamReadHeaders_matrix[];
void set_intra_matrix();
void BitstreamReadHeaders(struct length *bs, DECODER *dec) {
  while (bs)
    if (dec->quant_type)
      set_intra_matrix(dec->mpeg_quant_matrices, BitstreamReadHeaders_matrix);
}
```

decoder.i:
```
void BitstreamReadHeaders();
void decoder_decode() { BitstreamReadHeaders(); }
```

quant_matrix.i:
```
int set_intra_matrix_i;
void set_intra_matrix(short *mpeg_quant_matrices, char *matrix) {
  short *intra_matrix = mpeg_quant_matrices;
  set_intra_matrix_i = 0;
  for (; set_intra_matrix_i < 64; set_intra_matrix_i++)
    intra_matrix[set_intra_matrix_i] = !set_intra_matrix_i ? 8 : 1 >
matrix[set_intra_matrix_i] ?: matrix[set_intra_matrix_i];
}
```

libxvidcore.ld:
```
{
        global:
                decoder_decode;
        local: *;
};
``