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/* { dg-do run } */
/* { dg-options "-O2" } */
/* This testcase got misoptimized by combine due to a wrong setting of
subst_low_luid in try_combine. */
enum rtx_code {
A, B
};
void abort (void);
struct rtx_def {
__extension__ enum rtx_code code:16;
};
typedef struct rtx_def *rtx;
void __attribute__((noinline))
add_constraint (unsigned char is_a)
{
if (is_a)
abort ();
}
void __attribute__((noinline))
foo (rtx defn)
{
switch (defn->code)
{
case A:
case B:
add_constraint (defn->code == A);
break;
default:
break;
}
}
int
main ()
{
struct rtx_def r;
r.code = B;
foo (&r);
return 0;
}
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