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/* { dg-do compile } */
/* { dg-options "-Os -fdump-tree-sink-stats" } */
typedef short int16_t;
typedef unsigned char uint8_t;
void foo(int16_t runs[], uint8_t alpha[], int x, int count)
{
int16_t* next_runs = runs + x;
uint8_t* next_alpha = alpha + x;
while (x > 0)
{
int n = runs[0];
if (x < n)
{
alpha[x] = alpha[0];
runs[0] = (int16_t)(x);
runs[x] = (int16_t)(n - x);
break;
}
runs += n;
alpha += n;
x -= n;
}
runs = next_runs;
alpha = next_alpha;
x = count;
for (;;)
{
int n = runs[0];
if (x < n)
{
alpha[x] = alpha[0];
break;
}
x -= n;
runs += n;
}
}
/* We should not sink the next_runs = runs + x calculation after the loop. */
/* { dg-final { scan-tree-dump-times "Sunk statements:" 0 "sink" } } */
/* { dg-final { cleanup-tree-dump "sink" } } */
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