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| author | Richard Sandiford <richard.sandiford@linaro.org> | 2017-12-21 07:02:13 +0000 |
|---|---|---|
| committer | Richard Sandiford <rsandifo@gcc.gnu.org> | 2017-12-21 07:02:13 +0000 |
| commit | aca52e6f8d29064f4712e5f3f4429a36f918f099 (patch) | |
| tree | 45c2884952716e83f81ee8162585cbf16e06bf73 /gcc/tree-eh.c | |
| parent | 3fed2ce96f7ec8ee8603b33ba0426ac40acecf24 (diff) | |
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poly_int: MEM_REF offsets
This patch allows MEM_REF offsets to be polynomial, with mem_ref_offset
now returning a poly_offset_int instead of an offset_int. The
non-mechanical changes to callers of mem_ref_offset 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/
* fold-const.h (mem_ref_offset): Return a poly_offset_int rather
than an offset_int.
* tree.c (mem_ref_offset): Likewise.
(build_simple_mem_ref_loc): Treat MEM_REF offsets as poly_ints.
* builtins.c (get_object_alignment_2): Likewise.
* expr.c (get_inner_reference, expand_expr_real_1): Likewise.
* gimple-fold.c (get_base_constructor): Likewise.
* gimple-ssa-strength-reduction.c (restructure_reference): Likewise.
* gimple-ssa-warn-restrict.c (builtin_memref::builtin_memref):
Likewise.
* ipa-polymorphic-call.c
(ipa_polymorphic_call_context::ipa_polymorphic_call_context): Likewise.
* ipa-prop.c (compute_complex_assign_jump_func): Likewise.
(get_ancestor_addr_info): Likewise.
* ipa-param-manipulation.c (ipa_get_adjustment_candidate): Likewise.
* match.pd: Likewise.
* tree-data-ref.c (dr_analyze_innermost): Likewise.
* tree-dfa.c (get_addr_base_and_unit_offset_1): Likewise.
* tree-eh.c (tree_could_trap_p): Likewise.
* tree-object-size.c (addr_object_size): Likewise.
* tree-ssa-address.c (copy_ref_info): Likewise.
* tree-ssa-alias.c (indirect_ref_may_alias_decl_p): Likewise.
(indirect_refs_may_alias_p): Likewise.
* tree-ssa-sccvn.c (copy_reference_ops_from_ref): Likewise.
* tree-ssa.c (maybe_rewrite_mem_ref_base): Likewise.
(non_rewritable_mem_ref_base): Likewise.
* tree-vect-data-refs.c (vect_check_gather_scatter): Likewise.
* tree-vrp.c (vrp_prop::check_array_ref): Likewise.
* varasm.c (decode_addr_const): Likewise.
Co-Authored-By: Alan Hayward <alan.hayward@arm.com>
Co-Authored-By: David Sherwood <david.sherwood@arm.com>
From-SVN: r255930
Diffstat (limited to 'gcc/tree-eh.c')
| -rw-r--r-- | gcc/tree-eh.c | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/gcc/tree-eh.c b/gcc/tree-eh.c index 65e850d..fc5fb02 100644 --- a/gcc/tree-eh.c +++ b/gcc/tree-eh.c @@ -2658,14 +2658,15 @@ tree_could_trap_p (tree expr) if (TREE_CODE (TREE_OPERAND (expr, 0)) == ADDR_EXPR) { tree base = TREE_OPERAND (TREE_OPERAND (expr, 0), 0); - offset_int off = mem_ref_offset (expr); - if (wi::neg_p (off, SIGNED)) + poly_offset_int off = mem_ref_offset (expr); + if (maybe_lt (off, 0)) return true; if (TREE_CODE (base) == STRING_CST) - return wi::leu_p (TREE_STRING_LENGTH (base), off); - else if (DECL_SIZE_UNIT (base) == NULL_TREE - || TREE_CODE (DECL_SIZE_UNIT (base)) != INTEGER_CST - || wi::leu_p (wi::to_offset (DECL_SIZE_UNIT (base)), off)) + return maybe_le (TREE_STRING_LENGTH (base), off); + tree size = DECL_SIZE_UNIT (base); + if (size == NULL_TREE + || !poly_int_tree_p (size) + || maybe_le (wi::to_poly_offset (size), off)) return true; /* Now we are sure the first byte of the access is inside the object. */ |