- if (crtl->stack_alignment_needed < alignment_in_bits)
- crtl->stack_alignment_needed = alignment_in_bits;
- if (crtl->max_used_stack_slot_alignment < alignment_in_bits)
- crtl->max_used_stack_slot_alignment = alignment_in_bits;
+ /* Handle overalignment here for parameter copy on the stack.
+ Reserved enough space for it and dynamically align the address.
+ No free frame_space is added here. */
+ if (dynamic_align_addr)
+ {
+ rtx allocsize = gen_int_mode (size, Pmode);
+ get_dynamic_stack_size (&allocsize, 0, alignment_in_bits, NULL);
+
+ /* This is the size of space needed to accommodate required size of data
+ with given alignment. */
+ poly_int64 len = rtx_to_poly_int64 (allocsize);
+ old_frame_offset = frame_offset;
+
+ if (FRAME_GROWS_DOWNWARD)
+ {
+ frame_offset -= len;
+ try_fit_stack_local (frame_offset, len, len,
+ PREFERRED_STACK_BOUNDARY / BITS_PER_UNIT,
+ &slot_offset);
+ }
+ else
+ {
+ frame_offset += len;
+ try_fit_stack_local (old_frame_offset, len, len,
+ PREFERRED_STACK_BOUNDARY / BITS_PER_UNIT,
+ &slot_offset);
+ }
+ goto found_space;
+ }
+ else
+ {
+ if (crtl->stack_alignment_needed < alignment_in_bits)
+ crtl->stack_alignment_needed = alignment_in_bits;
+ if (crtl->max_used_stack_slot_alignment < alignment_in_bits)
+ crtl->max_used_stack_slot_alignment = alignment_in_bits;
+ }