gcc/testsuite/gcc.c-torture/compile/pr35869.c

   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 }