diff options
Diffstat (limited to 'gcc/cfgexpand.c')
| -rw-r--r-- | gcc/cfgexpand.c | 22 |
1 files changed, 17 insertions, 5 deletions
diff --git a/gcc/cfgexpand.c b/gcc/cfgexpand.c index 984ac4a..9a2837b 100644 --- a/gcc/cfgexpand.c +++ b/gcc/cfgexpand.c @@ -1053,6 +1053,7 @@ expand_stack_vars (bool (*pred) (size_t), struct stack_vars_data *data) HOST_WIDE_INT large_size = 0, large_alloc = 0; rtx large_base = NULL; unsigned large_align = 0; + bool large_allocation_done = false; tree decl; /* Determine if there are any variables requiring "large" alignment. @@ -1096,11 +1097,6 @@ expand_stack_vars (bool (*pred) (size_t), struct stack_vars_data *data) large_size &= -(HOST_WIDE_INT)alignb; large_size += stack_vars[i].size; } - - /* If there were any, allocate space. */ - if (large_size > 0) - large_base = allocate_dynamic_stack_space (GEN_INT (large_size), 0, - large_align, true); } for (si = 0; si < n; ++si) @@ -1186,6 +1182,22 @@ expand_stack_vars (bool (*pred) (size_t), struct stack_vars_data *data) /* Large alignment is only processed in the last pass. */ if (pred) continue; + + /* If there were any variables requiring "large" alignment, allocate + space. */ + if (large_size > 0 && ! large_allocation_done) + { + HOST_WIDE_INT loffset; + rtx large_allocsize; + + large_allocsize = GEN_INT (large_size); + get_dynamic_stack_size (&large_allocsize, 0, large_align, NULL); + loffset = alloc_stack_frame_space + (INTVAL (large_allocsize), + PREFERRED_STACK_BOUNDARY / BITS_PER_UNIT); + large_base = get_dynamic_stack_base (loffset, large_align); + large_allocation_done = true; + } gcc_assert (large_base != NULL); large_alloc += alignb - 1; |