gcc/testsuite/gcc.target/aarch64/pr62262.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fprofile-use" } */
   3
   4 static inline int CLZ(int mask) {
   5    return mask ? __builtin_clz(mask) : 32;
   6 }
   7
   8 int foo(int value)
   9 {
  10     if (value == 0)
  11         return 0;
  12
  13     int bias = CLZ(value);
  14     value >>= bias;
  15     int zeros = CLZ(value << 1);
  16     value <<= zeros;
  17
  18     int packed = (unsigned)(value << 9) >> 9;
  19     return packed;
  20 }