1 /* { dg-require-effective-target int32plus } */ 2 /* { dg-options "-O1 -ffast-math -floop-nest-optimize" } */ 3 adler32(int adler,char * buf,int n)4int adler32(int adler, char *buf, int n) 5 { 6 int sum = 0; 7 do { 8 adler += buf[0]; 9 sum += adler; 10 adler += buf[1]; 11 sum += adler; 12 adler += buf[2]; 13 sum += adler; 14 adler += buf[3]; 15 sum += adler; 16 } while (--n); 17 return adler | (sum << 16); 18 } 19