Viewing file:  pr65369.c (1.34 KB) -rw-r--r--
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/* PR tree-optimization/65369 */
#include <stdint.h>
static const char data[] =
"12345678901234567890123456789012345678901234567890"
"123456789012345678901234567890";
__attribute__ ((noinline))
static void foo (const unsigned int *buf)
{
if (__builtin_memcmp (buf, data, 64))
__builtin_abort ();
}
__attribute__ ((noinline))
static void bar (const unsigned char *block)
{
uint32_t buf[16];
__builtin_memcpy (buf + 0, block + 0, 4);
__builtin_memcpy (buf + 1, block + 4, 4);
__builtin_memcpy (buf + 2, block + 8, 4);
__builtin_memcpy (buf + 3, block + 12, 4);
__builtin_memcpy (buf + 4, block + 16, 4);
__builtin_memcpy (buf + 5, block + 20, 4);
__builtin_memcpy (buf + 6, block + 24, 4);
__builtin_memcpy (buf + 7, block + 28, 4);
__builtin_memcpy (buf + 8, block + 32, 4);
__builtin_memcpy (buf + 9, block + 36, 4);
__builtin_memcpy (buf + 10, block + 40, 4);
__builtin_memcpy (buf + 11, block + 44, 4);
__builtin_memcpy (buf + 12, block + 48, 4);
__builtin_memcpy (buf + 13, block + 52, 4);
__builtin_memcpy (buf + 14, block + 56, 4);
__builtin_memcpy (buf + 15, block + 60, 4);
foo (buf);
}
int
main ()
{
unsigned char input[sizeof data + 16] __attribute__((aligned (16)));
__builtin_memset (input, 0, sizeof input);
__builtin_memcpy (input + 1, data, sizeof data);
bar (input + 1);
return 0;
}
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