File: foldconst-1.c

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gcc-arm-none-eabi 15%3A8-2019-q3-1
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/* { dg-do compile } */
/* { dg-options "-O2 -fdump-tree-optimized" } */
void bar (unsigned int);

void
foo (void)
{
  char buf[1] = { 3 };
  const char *p = buf;
  const char **q = &p;
  unsigned int ch;
  switch (**q)
    {
    case 1:  ch = 5; break;
    case 2:  ch = 4; break;
    case 3:  ch = 3; break;
    case 4:  ch = 2; break;
    case 5:  ch = 1; break;
    default: ch = 0; break;
    }
  bar (ch);
}
/* The switch should be switch converted and later constant propagated.  */
/* { dg-final { scan-tree-dump-not "CSWTCH" "optimized"} } */
/* { dg-final { scan-tree-dump-not "switch" "optimized"} } */