[Bug target/79793] Incorrect stack alignment for interrupt handler in 64-bit

[hjl.tools at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79793

--- Comment #16 from H.J. Lu <hjl.tools at gmail dot com> ---
The problem is in create_cie_data:

 /* On entry, the Canonical Frame Address is at SP.  */
  memset (&loc, 0, sizeof (loc));
  loc.reg = dw_stack_pointer_regnum;
  loc.offset = INCOMING_FRAME_SP_OFFSET;
  def_cfa_1 (&loc);

We lost the function type info with LTO.