diff options
Diffstat (limited to 'gcc-4.9/gcc/cfgexpand.c')
| -rw-r--r-- | gcc-4.9/gcc/cfgexpand.c | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/gcc-4.9/gcc/cfgexpand.c b/gcc-4.9/gcc/cfgexpand.c index b7f63602d..14511e137 100644 --- a/gcc-4.9/gcc/cfgexpand.c +++ b/gcc-4.9/gcc/cfgexpand.c @@ -1013,10 +1013,19 @@ expand_stack_vars (bool (*pred) (size_t), struct stack_vars_data *data) if (data->asan_base == NULL) data->asan_base = gen_reg_rtx (Pmode); base = data->asan_base; + + if (!STRICT_ALIGNMENT) + base_align = crtl->max_used_stack_slot_alignment; + else + base_align = MAX (crtl->max_used_stack_slot_alignment, + GET_MODE_ALIGNMENT (SImode) + << ASAN_SHADOW_SHIFT); } else - offset = alloc_stack_frame_space (stack_vars[i].size, alignb); - base_align = crtl->max_used_stack_slot_alignment; + { + offset = alloc_stack_frame_space (stack_vars[i].size, alignb); + base_align = crtl->max_used_stack_slot_alignment; + } } else { @@ -1845,6 +1854,11 @@ expand_used_vars (void) = alloc_stack_frame_space (redzonesz, ASAN_RED_ZONE_SIZE); data.asan_vec.safe_push (prev_offset); data.asan_vec.safe_push (offset); + /* Leave space for alignment if STRICT_ALIGNMENT. */ + if (STRICT_ALIGNMENT) + alloc_stack_frame_space ((GET_MODE_ALIGNMENT (SImode) + << ASAN_SHADOW_SHIFT) + / BITS_PER_UNIT, 1); var_end_seq = asan_emit_stack_protection (virtual_stack_vars_rtx, |