gcc/testsuite/gcc.c-torture/compile/pr44063.c

   1 typedef signed char int8_t;
   2 typedef short int16_t;
   3 typedef unsigned char uint8_t;
   4 typedef unsigned int uint32_t;
   5
   6 union unaligned_32 {uint32_t l;} __attribute__((packed)) __attribute__((may_alias));
   7 static inline uint32_t NEG_USR32(uint32_t a, int8_t s){return a << (32 - s);}
   8 typedef struct GetBitContext { const uint8_t *buffer, *buffer_end; int index;}GetBitContext;
   9 typedef struct VLC {int16_t (*table)[2];} VLC;
  10 static __attribute__((always_inline)) inline int get_vlc2(GetBitContext *s, int16_t (*table)[2], int bits, int max_depth) {
  11     unsigned int re_index= (s)->index;
  12     int re_cache= 0;
  13     {
  14         int n, nb_bits;
  15         unsigned int index;
  16         index= NEG_USR32(re_cache, bits);
  17         n = table[index][1];
  18         if(max_depth > 1 && n < 0){
  19             re_cache= bswap_32((((const union unaligned_32 *) (((const uint8_t *)(s)->buffer)+(re_index>>3)))->l)) << (re_index&0x07);
  20         }
  21     }
  22 }
  23 typedef struct HYuvContext{GetBitContext gb; int decorrelate; int bitstream_bpp; uint8_t *temp[3]; VLC vlc[6];} HYuvContext;
  24 static __attribute__((always_inline)) inline void decode_bgr_1(HYuvContext *s, int count, int decorrelate, int alpha){
  25     int i;
  26         int code = get_vlc2(&s->gb, s->vlc[3].table, 11, 1);
  27         if(code != -1){
  28             s->temp[0][4*i+0] = get_vlc2(&s->gb, s->vlc[0].table, 11, 3);
  29             s->temp[0][4*i+1] = get_vlc2(&s->gb, s->vlc[1].table, 11, 3);
  30             s->temp[0][4*i+2] = get_vlc2(&s->gb, s->vlc[2].table, 11, 3);
  31         }
  32 }
  33 void decode_bgr_bitstream(HYuvContext *s, int count){
  34     if(s->decorrelate){
  35         if(s->bitstream_bpp==24) decode_bgr_1(s, count, 1, 0);
  36         else             decode_bgr_1(s, count, 1, 1);
  37     }
  38 }