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author | Richard Sandiford <richard.sandiford@linaro.org> | 2017-12-21 06:57:41 +0000 |
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committer | Richard Sandiford <rsandifo@gcc.gnu.org> | 2017-12-21 06:57:41 +0000 |
commit | f37fac2b74df114c5b3e9c8a3be2cad9acd3f4ca (patch) | |
tree | ebd8f2d136ae51379031e2596095f05826868563 /gcc/asan.c | |
parent | 5b9bbb630de43db527acf5e5a80c0a3dd446e0d9 (diff) | |
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poly_int: get_inner_reference & co.
This patch makes get_inner_reference and ptr_difference_const return the
bit size and bit position as poly_int64s rather than HOST_WIDE_INTS.
The non-mechanical changes were handled by previous patches.
2017-12-21 Richard Sandiford <richard.sandiford@linaro.org>
Alan Hayward <alan.hayward@arm.com>
David Sherwood <david.sherwood@arm.com>
gcc/
* tree.h (get_inner_reference): Return the bitsize and bitpos
as poly_int64_pods rather than HOST_WIDE_INT.
* fold-const.h (ptr_difference_const): Return the pointer difference
as a poly_int64_pod rather than a HOST_WIDE_INT.
* expr.c (get_inner_reference): Return the bitsize and bitpos
as poly_int64_pods rather than HOST_WIDE_INT.
(expand_expr_addr_expr_1, expand_expr_real_1): Track polynomial
offsets and sizes.
* fold-const.c (make_bit_field_ref): Take the bitpos as a poly_int64
rather than a HOST_WIDE_INT. Update call to get_inner_reference.
(optimize_bit_field_compare): Update call to get_inner_reference.
(decode_field_reference): Likewise.
(fold_unary_loc): Track polynomial offsets and sizes.
(split_address_to_core_and_offset): Return the bitpos as a
poly_int64_pod rather than a HOST_WIDE_INT.
(ptr_difference_const): Likewise for the pointer difference.
* asan.c (instrument_derefs): Track polynomial offsets and sizes.
* config/mips/mips.c (r10k_safe_mem_expr_p): Likewise.
* dbxout.c (dbxout_expand_expr): Likewise.
* dwarf2out.c (loc_list_for_address_of_addr_expr_of_indirect_ref)
(loc_list_from_tree_1, fortran_common): Likewise.
* gimple-laddress.c (pass_laddress::execute): Likewise.
* gimple-ssa-store-merging.c (find_bswap_or_nop_load): Likewise.
* gimplify.c (gimplify_scan_omp_clauses): Likewise.
* simplify-rtx.c (delegitimize_mem_from_attrs): Likewise.
* tree-affine.c (tree_to_aff_combination): Likewise.
(get_inner_reference_aff): Likewise.
* tree-data-ref.c (split_constant_offset_1): Likewise.
(dr_analyze_innermost): Likewise.
* tree-scalar-evolution.c (interpret_rhs_expr): Likewise.
* tree-sra.c (ipa_sra_check_caller): Likewise.
* tree-vect-data-refs.c (vect_check_gather_scatter): Likewise.
* ubsan.c (maybe_instrument_pointer_overflow): Likewise.
(instrument_bool_enum_load, instrument_object_size): Likewise.
* gimple-ssa-strength-reduction.c (slsr_process_ref): Update call
to get_inner_reference.
* hsa-gen.c (gen_hsa_addr): Likewise.
* sanopt.c (maybe_optimize_ubsan_ptr_ifn): Likewise.
* tsan.c (instrument_expr): Likewise.
* match.pd: Update call to ptr_difference_const.
gcc/ada/
* gcc-interface/trans.c (Attribute_to_gnu): Track polynomial
offsets and sizes.
* gcc-interface/utils2.c (build_unary_op): Likewise.
gcc/cp/
* constexpr.c (check_automatic_or_tls): Track polynomial
offsets and sizes.
Co-Authored-By: Alan Hayward <alan.hayward@arm.com>
Co-Authored-By: David Sherwood <david.sherwood@arm.com>
From-SVN: r255914
Diffstat (limited to 'gcc/asan.c')
-rw-r--r-- | gcc/asan.c | 12 |
1 files changed, 6 insertions, 6 deletions
@@ -2076,7 +2076,7 @@ instrument_derefs (gimple_stmt_iterator *iter, tree t, if (size_in_bytes <= 0) return; - HOST_WIDE_INT bitsize, bitpos; + poly_int64 bitsize, bitpos; tree offset; machine_mode mode; int unsignedp, reversep, volatilep = 0; @@ -2094,19 +2094,19 @@ instrument_derefs (gimple_stmt_iterator *iter, tree t, return; } - if (bitpos % BITS_PER_UNIT - || bitsize != size_in_bytes * BITS_PER_UNIT) + if (!multiple_p (bitpos, BITS_PER_UNIT) + || maybe_ne (bitsize, size_in_bytes * BITS_PER_UNIT)) return; if (VAR_P (inner) && DECL_HARD_REGISTER (inner)) return; + poly_int64 decl_size; if (VAR_P (inner) && offset == NULL_TREE - && bitpos >= 0 && DECL_SIZE (inner) - && tree_fits_shwi_p (DECL_SIZE (inner)) - && bitpos + bitsize <= tree_to_shwi (DECL_SIZE (inner))) + && poly_int_tree_p (DECL_SIZE (inner), &decl_size) + && known_subrange_p (bitpos, bitsize, 0, decl_size)) { if (DECL_THREAD_LOCAL_P (inner)) return; |