rt_gccstream/gcc/testsuite/gcc.dg/dse.c

33 lines
393 B
C

/* { dg-do compile } */
/* { dg-options "-O2 -fdump-tree-dse-details" } */
#define N 256
struct
{
int x;
int y;
} S[100];
int z[100];
int
foo (void)
{
int i;
int x, y;
S[5].x = 0;
S[5].y = 0;
x = 5 + z[0];
y = z[0];
S[5].x = x;
S[5].y = y;
}
/* { dg-final { scan-tree-dump-times "Deleted dead store" 2 "dse1" } } */
/* { dg-final { cleanup-tree-dump "dse*" } } */