diff options
Diffstat (limited to 'gcc/tree-data-ref.c')
| -rw-r--r-- | gcc/tree-data-ref.c | 28 |
1 files changed, 17 insertions, 11 deletions
diff --git a/gcc/tree-data-ref.c b/gcc/tree-data-ref.c index 86a587d..2707cf8 100644 --- a/gcc/tree-data-ref.c +++ b/gcc/tree-data-ref.c @@ -820,16 +820,16 @@ dr_analyze_innermost (innermost_loop_behavior *drb, tree ref, } /* Calculate the alignment and misalignment for the inner reference. */ - unsigned int HOST_WIDE_INT base_misalignment; - unsigned int base_alignment; - get_object_alignment_1 (base, &base_alignment, &base_misalignment); + unsigned int HOST_WIDE_INT bit_base_misalignment; + unsigned int bit_base_alignment; + get_object_alignment_1 (base, &bit_base_alignment, &bit_base_misalignment); /* There are no bitfield references remaining in BASE, so the values we got back must be whole bytes. */ - gcc_assert (base_alignment % BITS_PER_UNIT == 0 - && base_misalignment % BITS_PER_UNIT == 0); - base_alignment /= BITS_PER_UNIT; - base_misalignment /= BITS_PER_UNIT; + gcc_assert (bit_base_alignment % BITS_PER_UNIT == 0 + && bit_base_misalignment % BITS_PER_UNIT == 0); + unsigned int base_alignment = bit_base_alignment / BITS_PER_UNIT; + poly_int64 base_misalignment = bit_base_misalignment / BITS_PER_UNIT; if (TREE_CODE (base) == MEM_REF) { @@ -837,8 +837,8 @@ dr_analyze_innermost (innermost_loop_behavior *drb, tree ref, { /* Subtract MOFF from the base and add it to POFFSET instead. Adjust the misalignment to reflect the amount we subtracted. */ - offset_int moff = mem_ref_offset (base); - base_misalignment -= moff.to_short_addr (); + poly_offset_int moff = mem_ref_offset (base); + base_misalignment -= moff.force_shwi (); tree mofft = wide_int_to_tree (sizetype, moff); if (!poffset) poffset = mofft; @@ -925,8 +925,14 @@ dr_analyze_innermost (innermost_loop_behavior *drb, tree ref, drb->offset = fold_convert (ssizetype, offset_iv.base); drb->init = init; drb->step = step; - drb->base_alignment = base_alignment; - drb->base_misalignment = base_misalignment & (base_alignment - 1); + if (known_misalignment (base_misalignment, base_alignment, + &drb->base_misalignment)) + drb->base_alignment = base_alignment; + else + { + drb->base_alignment = known_alignment (base_misalignment); + drb->base_misalignment = 0; + } drb->offset_alignment = highest_pow2_factor (offset_iv.base); drb->step_alignment = highest_pow2_factor (step); |