[Bug middle-end/84150] Wrong pointer size used in builtin setjmp/longjmp with -maddress-mode=long

[hjl.tools at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84150

H.J. Lu <hjl.tools at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2018-01-31
                 CC|                            |ebotcazou at gcc dot gnu.org
          Component|target                      |middle-end
     Ever confirmed|0                           |1

--- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> ---
A run-time testcase:

[hjl@gnu-skx-1 pr84150]$ cat x.i
void *buf[6] = {
  (void *) -1,
  (void *) -1,
  (void *) -1,
  (void *) -1,
  (void *) -1,
  (void *) -1
};

void raise0(void)
{
  __builtin_longjmp (buf, 1);
}

int execute(int cmd)
{
  int last = 0;

  if (__builtin_setjmp (buf) == 0)
    while (1)
      {
        last = 1;
        raise0 ();
      }

  if (last == 0)
    return 0;
  else
    return cmd;
}

int main(void)
{
  if (execute (1) == 0)
    __builtin_abort ();

  if (buf[5] != (void *) -1)
    __builtin_abort ();

  return 0;
}
[hjl@gnu-skx-1 pr84150]$ make CC=gcc
gcc -O2 -mx32 -maddress-mode=long -S x.i
gcc -O2 -mx32 -maddress-mode=long -o x x.s
./x
make: *** [Makefile:13: all] Aborted
[hjl@gnu-skx-1 pr84150]$ 

expand_builtin_setjmp_setup and expand_builtin_longjmp shouldn't use Pmode
to save and store SP, FP and IP into (void *) slots, which are ptr_mode,
32 bits.