Viewing file:  vect-alias-check-19.c (1.51 KB) -rw-r--r--
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#define N 200
#define DIST 32
typedef signed char sc;
typedef unsigned char uc;
typedef signed short ss;
typedef unsigned short us;
typedef int si;
typedef unsigned int ui;
typedef signed long long sll;
typedef unsigned long long ull;
#define FOR_EACH_TYPE(M) \
M (sc) M (uc) \
M (ss) M (us) \
M (si) M (ui) \
M (sll) M (ull) \
M (float) M (double)
#define ADD_TEST(TYPE) \
TYPE a_##TYPE[N * 2]; \
void __attribute__((noinline, noclone)) \
test_##TYPE (int x, int y) \
{ \
for (int i = 0; i < N; ++i) \
{ \
a_##TYPE[i + x] = i; \
a_##TYPE[i + y] = 42 - i * 2; \
} \
}
#define DO_TEST(TYPE) \
for (int i = 0; i < DIST * 2; ++i) \
{ \
__builtin_memset (a_##TYPE, 0, sizeof (a_##TYPE)); \
test_##TYPE (DIST, i); \
for (int j = 0; j < N + DIST * 2; ++j) \
{ \
TYPE expected = 0; \
if (i > DIST && j >= i && j < i + N) \
expected = 42 - (j - i) * 2; \
if (j >= DIST && j < DIST + N) \
expected = j - DIST; \
if (i <= DIST && j >= i && j < i + N) \
expected = 42 - (j - i) * 2; \
if (expected != a_##TYPE[j]) \
__builtin_abort (); \
} \
}
FOR_EACH_TYPE (ADD_TEST)
int
main (void)
{
FOR_EACH_TYPE (DO_TEST)
return 0;
}
/* { dg-final { scan-tree-dump {flags: *WAW\n} "vect" { target vect_int } } } */
/* { dg-final { scan-tree-dump "using an index-based WAR/WAW test" "vect" } } */
/* { dg-final { scan-tree-dump-not "using an address-based" "vect" } } */
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