Viewing file:  20090223-1.c (1.2 KB) -rw-r--r--
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/* The RTL loop optimizer used to replace the output register of the
inline assembly with a pseudo although the variable is declared as
register asm ("0"). */
/* { dg-do run } */
/* { dg-options "-O2 -Wno-attributes -Wno-implicit-function-declaration" } */
extern void abort (void);
static unsigned char __attribute__ ((always_inline))
mytoupper (unsigned char c)
{
if (c >= 'a' && c <= 'z')
c -= 'a' - 'A';
return c;
}
static unsigned long __attribute__ ((always_inline))
strlen (const char *s)
{
register unsigned long r0 asm ("0");
const char *tmp = s;
asm (
#ifdef __s390x__
" lghi %0, 0\n"
#else
" lhi %0, 0\n"
#endif
"0:srst %0,%1\n"
" jo 0b"
: "=d" (r0), "+a" (tmp)
:
:"cc");
return r0 - (unsigned long) s;
}
char boot_command_line[] = "this is a test";
void __attribute__ ((noinline))
foo (char *str)
{
if (strcmp (str, "THIS IS A TEST") != 0)
abort ();
}
int
main ()
{
char upper_command_line[1024];
int i;
for (i = 0; i < strlen (boot_command_line); i++)
upper_command_line[i] = mytoupper (boot_command_line[i]);
upper_command_line[strlen (boot_command_line)] = 0;
foo (upper_command_line);
return 0;
}
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