diff options
Diffstat (limited to 'gcc/emit-rtl.c')
| -rw-r--r-- | gcc/emit-rtl.c | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/gcc/emit-rtl.c b/gcc/emit-rtl.c index ab73f00c6bb..67c4cfbcd03 100644 --- a/gcc/emit-rtl.c +++ b/gcc/emit-rtl.c @@ -1808,12 +1808,16 @@ set_mem_attributes (ref, t, objectp) if (DECL_P (t)) { expr = t; + offset = NULL; if (host_integerp (off_tree, 1)) - offset = GEN_INT (tree_low_cst (off_tree, 1)); - size = (DECL_SIZE_UNIT (t) - && host_integerp (DECL_SIZE_UNIT (t), 1) - ? GEN_INT (tree_low_cst (DECL_SIZE_UNIT (t), 1)) : 0); - align = DECL_ALIGN (t); + { + HOST_WIDE_INT ioff = tree_low_cst (off_tree, 1); + HOST_WIDE_INT aoff = (ioff & -ioff) * BITS_PER_UNIT; + align = DECL_ALIGN (t); + if (aoff && aoff < align) + align = aoff; + offset = GEN_INT (ioff); + } } else if (TREE_CODE (t) == COMPONENT_REF) { |