[Bug target/63937] [5 Regression] Compiling large arrays fails

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63937

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jakub at gcc dot gnu.org

--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
/* PR target/63937 */
/* { dg-do compile { target lp64 } } */
/* { dg-options "-O2" } */

void foo (char *p)
{
  p = __builtin_assume_aligned (p, 64);
  __builtin_memset (p, 0, 0x100000001ULL);
}

might be better testcase for the testsuite (or, also use one or both the other
ones, but guard them with { i?86-* x86_64-* } && lp64, not sure if all 64-bit
targets support huge frames.

As for the fix, the right fix agreed on IRC is replace unsigned int type for
sizes with unsigned HOST_WIDE_INT in the target hook.