diff options
Diffstat (limited to 'gcc/tree-ssa-loop-ivopts.c')
| -rw-r--r-- | gcc/tree-ssa-loop-ivopts.c | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/gcc/tree-ssa-loop-ivopts.c b/gcc/tree-ssa-loop-ivopts.c index a1fdfa4..8662f4c 100644 --- a/gcc/tree-ssa-loop-ivopts.c +++ b/gcc/tree-ssa-loop-ivopts.c @@ -1536,16 +1536,18 @@ may_be_unaligned_p (tree ref, tree step) if (mode != BLKmode) { - double_int mul; - tree al = build_int_cst (TREE_TYPE (step), - GET_MODE_ALIGNMENT (mode) / BITS_PER_UNIT); + unsigned mode_align = GET_MODE_ALIGNMENT (mode); - if (base_align < GET_MODE_ALIGNMENT (mode) - || bitpos % GET_MODE_ALIGNMENT (mode) != 0 - || bitpos % BITS_PER_UNIT != 0) + if (base_align < mode_align + || (bitpos % mode_align) != 0 + || (bitpos % BITS_PER_UNIT) != 0) return true; - if (!constant_multiple_of (step, al, &mul)) + if (toffset + && (highest_pow2_factor (toffset) * BITS_PER_UNIT) < mode_align) + return true; + + if ((highest_pow2_factor (step) * BITS_PER_UNIT) < mode_align) return true; } |