pr11001-memset-1.c

来自「用于进行gcc测试」· C语言 代码 · 共 24 行

/* Ensure that we don't use 'rep stoX' in the presence of register globals.  */
/* { dg-do compile } */
/* { dg-options "-Os -w" } */

extern void *memset (void *, int, __SIZE_TYPE__);

register int regvar asm("%eax");

int foo[10];
int bar[10];

char baz[15];
char quux[15];

void
do_copy ()
{
  memset (foo, 0, sizeof foo);
  memset (baz, 0, sizeof baz);
}

/* { dg-final { scan-assembler-not "rep stosl" } } */
/* { dg-final { scan-assembler-not "rep stosb" } } */