File: pr52631.c

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gcc-arm-none-eabi 15%3A8-2019-q3-1
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/* { dg-do compile } */
/* { dg-options "-O2 -fno-tree-forwprop -fdump-tree-fre1-details" } */

unsigned f(unsigned a)
{
#if __SIZEOF_INT__ == 2
  unsigned b = a >> 15;
#else
  unsigned b = a >> 31;
#endif
  return b&1;
}

/* We want to verify that we replace the b & 1 with b.  */
/* { dg-final { scan-tree-dump-times "Replaced b_\[0-9\]+ & 1 with b_\[0-9\]+ in" 1 "fre1"} } */