/* Test for reload failing to eliminate from argp to sp. */
|
/* Test for reload failing to eliminate from argp to sp. */
|
/* { dg-do run } */
|
/* { dg-do run } */
|
/* { dg-require-effective-target ilp32 } */
|
/* { dg-require-effective-target ilp32 } */
|
/* { dg-require-effective-target nonpic } */
|
/* { dg-require-effective-target nonpic } */
|
/* { dg-options "-O2 -fomit-frame-pointer" } */
|
/* { dg-options "-O2 -fomit-frame-pointer" } */
|
|
|
static int ustrsize (const char *s);
|
static int ustrsize (const char *s);
|
static int (*ucwidth) (int c);
|
static int (*ucwidth) (int c);
|
static int (*ugetxc) (const char **s);
|
static int (*ugetxc) (const char **s);
|
static int (*usetc) (char *s, int c);
|
static int (*usetc) (char *s, int c);
|
|
|
char *ustrzcat(char *dest, int size, const char *src)
|
char *ustrzcat(char *dest, int size, const char *src)
|
{
|
{
|
int pos = ustrsize(dest);
|
int pos = ustrsize(dest);
|
int c;
|
int c;
|
|
|
size -= pos + ucwidth(0);
|
size -= pos + ucwidth(0);
|
|
|
while ((c = ugetxc(&src)) != 0) {
|
while ((c = ugetxc(&src)) != 0) {
|
size -= ucwidth(c);
|
size -= ucwidth(c);
|
if (size < 0)
|
if (size < 0)
|
break;
|
break;
|
|
|
pos += usetc(dest+pos, c);
|
pos += usetc(dest+pos, c);
|
}
|
}
|
|
|
usetc(dest+pos, 0);
|
usetc(dest+pos, 0);
|
|
|
return dest;
|
return dest;
|
}
|
}
|
|
|
static int __attribute__((noinline))
|
static int __attribute__((noinline))
|
ustrsize (const char *s)
|
ustrsize (const char *s)
|
{
|
{
|
return 0;
|
return 0;
|
}
|
}
|
|
|
static int
|
static int
|
ucwidth_ (int c)
|
ucwidth_ (int c)
|
{
|
{
|
return 1;
|
return 1;
|
}
|
}
|
|
|
static int
|
static int
|
ugetxc_ (const char **s)
|
ugetxc_ (const char **s)
|
{
|
{
|
return '\0';
|
return '\0';
|
}
|
}
|
|
|
static int
|
static int
|
usetc_ (char *s, int c)
|
usetc_ (char *s, int c)
|
{
|
{
|
return 1;
|
return 1;
|
}
|
}
|
|
|
int
|
int
|
main()
|
main()
|
{
|
{
|
ucwidth = ucwidth_;
|
ucwidth = ucwidth_;
|
ugetxc = ugetxc_;
|
ugetxc = ugetxc_;
|
usetc = usetc_;
|
usetc = usetc_;
|
|
|
/* ??? It is impossible to explicitly modify the hard frame pointer.
|
/* ??? It is impossible to explicitly modify the hard frame pointer.
|
This will run afoul of code in flow.c that declines to mark regs
|
This will run afoul of code in flow.c that declines to mark regs
|
in eliminate_regs in regs_ever_used. Apparently, we have to wait
|
in eliminate_regs in regs_ever_used. Apparently, we have to wait
|
for reload to decide that it won't need a frame pointer before a
|
for reload to decide that it won't need a frame pointer before a
|
variable can be allocated to %ebp.
|
variable can be allocated to %ebp.
|
|
|
So save, restore, and clobber %ebp by hand. */
|
So save, restore, and clobber %ebp by hand. */
|
|
|
asm ("pushl %%ebp\n\t"
|
asm ("pushl %%ebp\n\t"
|
"movl $-1, %%ebp\n\t"
|
"movl $-1, %%ebp\n\t"
|
"pushl $0\n\t"
|
"pushl $0\n\t"
|
"pushl $0\n\t"
|
"pushl $0\n\t"
|
"pushl $0\n\t"
|
"pushl $0\n\t"
|
"call %P0\n\t"
|
"call %P0\n\t"
|
"addl $12, %%esp\n\t"
|
"addl $12, %%esp\n\t"
|
"popl %%ebp"
|
"popl %%ebp"
|
: : "i"(ustrzcat) : "memory" );
|
: : "i"(ustrzcat) : "memory" );
|
|
|
return 0;
|
return 0;
|
}
|
}
|
|
|
