| /* { dg-do run } */ |
| /* { dg-options "-O2 -fipa-ra" } */ |
| |
| extern void abort (void); |
| |
| #if (__SIZEOF_LONG_LONG__ == __SIZEOF_POINTER__) |
| #define ADD_SUFFIX(a) a ## ULL |
| #elif (__SIZEOF_LONG__ == __SIZEOF_POINTER__) |
| #define ADD_SUFFIX(a) a ## UL |
| #elif (__SIZEOF_INT__ == __SIZEOF_POINTER__) |
| #define ADD_SUFFIX(a) a ## U |
| #else |
| #error Add target support here |
| #endif |
| |
| #if __SIZEOF_POINTER__ <= 4 |
| /* Use a 16 bit pointer to have a valid pointer for 16-bit to 31-bit pointer |
| architectures. Using sizeof, we cannot distinguish between 31-bit and 32-bit |
| pointer types, so we also handle the 32-bit pointer type case here. */ |
| #define CONST_PTR ADD_SUFFIX (0x800) |
| #else |
| /* For x86_64 -m64, the problem reproduces with this 32-bit CONST_PTR, but not |
| with a 2-power below it. */ |
| #define CONST_PTR ADD_SUFFIX (0x80000000) |
| #endif |
| |
| int __attribute__((noinline, noclone)) |
| bar (void) |
| { |
| return 1; |
| } |
| |
| struct S |
| { |
| unsigned long p, q, r; |
| void *v; |
| }; |
| |
| struct S *s1; |
| struct S *s2; |
| |
| void __attribute__((noinline, noclone)) |
| fn2 (struct S *x) |
| { |
| s2 = x; |
| } |
| |
| __attribute__((noinline, noclone)) void * |
| fn1 (struct S *x) |
| { |
| /* Just a statement to make it a non-const function. */ |
| s1 = x; |
| |
| return (void *)0; |
| } |
| |
| int __attribute__((noinline, noclone)) |
| baz (void) |
| { |
| struct S *x = (struct S *) CONST_PTR; |
| |
| x += bar (); |
| |
| fn1 (x); |
| fn2 (x); |
| |
| return 0; |
| } |
| |
| int |
| main (void) |
| { |
| baz (); |
| |
| if (s2 != (((struct S *) CONST_PTR) + 1)) |
| abort (); |
| |
| return 0; |
| } |