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/* { dg-options "-O0" } */

/* { dg-do compile } */

static inline __attribute__ ((__always_inline__))

unsigned __clz (unsigned input)

{

  unsigned output;

  __asm__ __volatile__ ("clz %0, %1":"=r" (output):"r" (input));

}

__attribute__ ((optimize ("O2")))

void foo ()

{

  unsigned a;

  unsigned b;

  a = __clz (b);

}