rt_gccstream/gcc/testsuite/gcc.dg/tree-ssa/ssa-sccvn-1.c

22 lines
498 B
C

/* { dg-do compile } */
/* { dg-options "-O2 -fdump-tree-fre-stats" } */
void vnum_test8(int *data)
{
int i;
int stop = data[3];
int m = data[4];
int n = m;
for (i=0; i<stop; i++) {
int k = data[2];
data[k] = 2;
data[0] = m - n;
k = data[1];
m = m + k;
n = n + k;
}
}
/* We should eliminate m - n, and set n = n + k into n = m. */
/* { dg-final { scan-tree-dump-times "Eliminated: 3" 1 "fre"} } */
/* { dg-final { cleanup-tree-dump "fre" } } */