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| author | Richard Sandiford <richard.sandiford@linaro.org> | 2017-12-20 12:52:58 +0000 |
|---|---|---|
| committer | Richard Sandiford <rsandifo@gcc.gnu.org> | 2017-12-20 12:52:58 +0000 |
| commit | b9c257340bd20ec0e7debffc62ed3e3901c2908d (patch) | |
| tree | dcbb7292f9ffa26eed52e3bf4b9f6f183f9df8cd /gcc/tree-ssa-uninit.c | |
| parent | 5ffca72c5db83f53562a968a30d3955126f044f2 (diff) | |
| download | gcc-b9c257340bd20ec0e7debffc62ed3e3901c2908d.zip gcc-b9c257340bd20ec0e7debffc62ed3e3901c2908d.tar.gz gcc-b9c257340bd20ec0e7debffc62ed3e3901c2908d.tar.bz2 | |
poly_int: ao_ref and vn_reference_op_t
This patch changes the offset, size and max_size fields
of ao_ref from HOST_WIDE_INT to poly_int64 and propagates
the change through the code that references it. This includes
changing the off field of vn_reference_op_struct in the same way.
2017-12-20 Richard Sandiford <richard.sandiford@linaro.org>
Alan Hayward <alan.hayward@arm.com>
David Sherwood <david.sherwood@arm.com>
gcc/
* inchash.h (inchash::hash::add_poly_int): New function.
* tree-ssa-alias.h (ao_ref::offset, ao_ref::size, ao_ref::max_size):
Use poly_int64 rather than HOST_WIDE_INT.
(ao_ref::max_size_known_p): New function.
* tree-ssa-sccvn.h (vn_reference_op_struct::off): Use poly_int64_pod
rather than HOST_WIDE_INT.
* tree-ssa-alias.c (ao_ref_base): Apply get_ref_base_and_extent
to temporaries until its interface is adjusted to match.
(ao_ref_init_from_ptr_and_size): Handle polynomial offsets and sizes.
(aliasing_component_refs_p, decl_refs_may_alias_p)
(indirect_ref_may_alias_decl_p, indirect_refs_may_alias_p): Take
the offsets and max_sizes as poly_int64s instead of HOST_WIDE_INTs.
(refs_may_alias_p_1, stmt_kills_ref_p): Adjust for changes to
ao_ref fields.
* alias.c (ao_ref_from_mem): Likewise.
* tree-ssa-dce.c (mark_aliased_reaching_defs_necessary_1): Likewise.
* tree-ssa-dse.c (valid_ao_ref_for_dse, normalize_ref)
(clear_bytes_written_by, setup_live_bytes_from_ref, compute_trims)
(maybe_trim_complex_store, maybe_trim_constructor_store)
(live_bytes_read, dse_classify_store): Likewise.
* tree-ssa-sccvn.c (vn_reference_compute_hash, vn_reference_eq):
(copy_reference_ops_from_ref, ao_ref_init_from_vn_reference)
(fully_constant_vn_reference_p, valueize_refs_1): Likewise.
(vn_reference_lookup_3): Likewise.
* tree-ssa-uninit.c (warn_uninitialized_vars): Likewise.
Co-Authored-By: Alan Hayward <alan.hayward@arm.com>
Co-Authored-By: David Sherwood <david.sherwood@arm.com>
From-SVN: r255872
Diffstat (limited to 'gcc/tree-ssa-uninit.c')
| -rw-r--r-- | gcc/tree-ssa-uninit.c | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/gcc/tree-ssa-uninit.c b/gcc/tree-ssa-uninit.c index b17b2b1..b921751 100644 --- a/gcc/tree-ssa-uninit.c +++ b/gcc/tree-ssa-uninit.c @@ -294,15 +294,15 @@ warn_uninitialized_vars (bool warn_possibly_uninitialized) /* Do not warn if the access is fully outside of the variable. */ + poly_int64 decl_size; if (DECL_P (base) - && ref.size != -1 - && ((ref.max_size == ref.size - && ref.offset + ref.size <= 0) - || (ref.offset >= 0 + && known_size_p (ref.size) + && ((known_eq (ref.max_size, ref.size) + && known_le (ref.offset + ref.size, 0)) + || (known_ge (ref.offset, 0) && DECL_SIZE (base) - && TREE_CODE (DECL_SIZE (base)) == INTEGER_CST - && compare_tree_int (DECL_SIZE (base), - ref.offset) <= 0))) + && poly_int_tree_p (DECL_SIZE (base), &decl_size) + && known_le (decl_size, ref.offset)))) continue; /* Do not warn if the access is then used for a BIT_INSERT_EXPR. */ |