diff options
Diffstat (limited to 'gcc/tree-ssa.c')
| -rw-r--r-- | gcc/tree-ssa.c | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/gcc/tree-ssa.c b/gcc/tree-ssa.c index ee311ce9758..d197f99bdd2 100644 --- a/gcc/tree-ssa.c +++ b/gcc/tree-ssa.c @@ -1427,12 +1427,14 @@ non_rewritable_mem_ref_base (tree ref) if (! DECL_P (decl)) return NULL_TREE; if (! is_gimple_reg_type (TREE_TYPE (base)) - || VOID_TYPE_P (TREE_TYPE (base))) + || VOID_TYPE_P (TREE_TYPE (base)) + || TREE_THIS_VOLATILE (decl) != TREE_THIS_VOLATILE (base)) return decl; if ((TREE_CODE (TREE_TYPE (decl)) == VECTOR_TYPE || TREE_CODE (TREE_TYPE (decl)) == COMPLEX_TYPE) && useless_type_conversion_p (TREE_TYPE (base), TREE_TYPE (TREE_TYPE (decl))) + && known_ge (mem_ref_offset (base), 0) && known_gt (wi::to_poly_offset (TYPE_SIZE_UNIT (TREE_TYPE (decl))), mem_ref_offset (base)) && multiple_of_p (sizetype, TREE_OPERAND (base, 1), @@ -1515,11 +1517,11 @@ non_rewritable_lvalue_p (tree lhs) && TYPE_MODE (TREE_TYPE (decl)) != BLKmode && operand_equal_p (TYPE_SIZE_UNIT (TREE_TYPE (lhs)), TYPE_SIZE_UNIT (TREE_TYPE (TREE_TYPE (decl))), 0) - && tree_fits_uhwi_p (TREE_OPERAND (lhs, 1)) - && tree_int_cst_lt (TREE_OPERAND (lhs, 1), - TYPE_SIZE_UNIT (TREE_TYPE (decl))) - && (tree_to_uhwi (TREE_OPERAND (lhs, 1)) - % tree_to_uhwi (TYPE_SIZE_UNIT (TREE_TYPE (lhs)))) == 0) + && known_ge (mem_ref_offset (lhs), 0) + && known_gt (wi::to_poly_offset (TYPE_SIZE_UNIT (TREE_TYPE (decl))), + mem_ref_offset (lhs)) + && multiple_of_p (sizetype, TREE_OPERAND (lhs, 1), + TYPE_SIZE_UNIT (TREE_TYPE (lhs)))) return false; } |