modernc.org/ccgo/v3@v3.16.14/lib/testdata/gcc-9.1.0/gcc/testsuite/gcc.c-torture/compile/pr35869.c (about)

     1  struct texture_stage_op
     2  {
     3      unsigned int carg1, carg2, carg0;
     4      unsigned int aarg1, aarg2, aarg0;
     5      unsigned int dst;
     6  };
     7  
     8  static const char *debug_register(unsigned int reg) {
     9      switch(reg) {
    10          case 0x8921: return "GL_REG_0_ATI";
    11          case 0x8923: return "GL_REG_2_ATI";
    12          case 0x0: return "GL_ZERO";
    13          case 0x1: return "GL_ONE";
    14          default: return "Unknown register\n";
    15      }
    16  }
    17  
    18  static unsigned int find_tmpreg(struct texture_stage_op op[8]) {
    19      int i;
    20      int tex_used[8];
    21  
    22      for(i = 0; i < 8; i++) {
    23          if(op[i].carg1 == 0x00000002 ) {
    24              tex_used[i] = 1;
    25          }
    26      }
    27  
    28      for(i = 1; i < 6; i++) {
    29          if(!tex_used[i]) {
    30                  return 0x8921 + i;
    31          }
    32      }
    33      return 0;
    34  }
    35  
    36  extern f(const char*);
    37  
    38  void g() {
    39      struct texture_stage_op op[8];
    40      unsigned int tmparg = find_tmpreg(op);
    41      unsigned int dstreg;
    42  
    43      if(tmparg == 0x0) return;
    44      dstreg = tmparg;
    45      f(debug_register(dstreg));
    46      return;
    47  }