| Age | Commit message (Collapse) | Author | Files | Lines |
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not work with array argument
gcc/ChangeLog:
* tree-ssa-strlen.c (maybe_set_strlen_range): Use type size rather
than its domain to compute its the upper bound of a char array.
gcc/testsuite/ChangeLog:
* gcc.dg/strlenopt-47.c: New test.
* gcc.dg/strlenopt-48.c: New test.
From-SVN: r262438
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gcc/ChangeLog:
PR tree-optimization/86204
* tree-ssa-strlen.c (handle_builtin_strlen): Avoid storing
a strnlen result if it's less than the length of the string.
gcc/testsuite/ChangeLog:
PR tree-optimization/86204
* gcc.dg/strlenopt-46.c: New test.
From-SVN: r262114
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gcc/ChangeLog:
PR tree-optimization/85700
* gimple-fold.c (gimple_fold_builtin_strncat): Adjust comment.
* tree-ssa-strlen.c (is_strlen_related_p): Handle integer subtraction.
(maybe_diag_stxncpy_trunc): Distinguish strncat from strncpy.
gcc/testsuite/ChangeLog:
PR tree-optimization/85700
* gcc.dg/Wstringop-truncation-4.c: New test.
From-SVN: r262110
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gcc/c-family/ChangeLog:
PR middle-end/85602
* c-warn.c (sizeof_pointer_memaccess_warning): Check for attribute
nonstring.
gcc/ChangeLog:
PR middle-end/85602
* calls.c (maybe_warn_nonstring_arg): Handle strncat.
* tree-ssa-strlen.c (is_strlen_related_p): Make extern.
Handle integer subtraction.
(maybe_diag_stxncpy_trunc): Handle nonstring source arguments.
* tree-ssa-strlen.h (is_strlen_related_p): Declare.
gcc/testsuite/ChangeLog:
PR middle-end/85602
* gcc.dg/attr-nonstring-2.c: Adjust text of expected warning.
* c-c++-common/attr-nonstring-8.c: New test.
From-SVN: r261718
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gcc/ChangeLog:
PR tree-optimization/81384
* builtin-types.def (BT_FN_SIZE_CONST_STRING_SIZE): New.
* builtins.c (expand_builtin_strnlen): New function.
(expand_builtin): Call it.
(fold_builtin_n): Avoid setting TREE_NO_WARNING.
* builtins.def (BUILT_IN_STRNLEN): New.
* calls.c (maybe_warn_nonstring_arg): Handle BUILT_IN_STRNLEN.
Warn for bounds in excess of maximum object size.
* tree-ssa-strlen.c (maybe_set_strlen_range): Return tree representing
single-value ranges. Handle strnlen.
(handle_builtin_strlen): Handle strnlen.
(strlen_check_and_optimize_stmt): Same.
* doc/extend.texi (Other Builtins): Document strnlen.
gcc/testsuite/ChangeLog:
PR tree-optimization/81384
* gcc.c-torture/execute/builtins/lib/strnlen.c: New test.
* gcc.c-torture/execute/builtins/strnlen-lib.c: New test.
* gcc.c-torture/execute/builtins/strnlen.c: New test.
* gcc.dg/attr-nonstring-2.c: New test.
* gcc.dg/attr-nonstring-3.c: New test.
* gcc.dg/attr-nonstring-4.c: New test.
* gcc.dg/strlenopt-45.c: New test.
* gcc.dg/strlenopt.h (strnlen): Declare.
From-SVN: r261705
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invalid call to strnlen
gcc/testsuite/ChangeLog:
PR tree-optimization/86114
* gcc.dg/pr86114.c: New test.
gcc/ChangeLog:
PR tree-optimization/86114
* gimple-fold.c (gimple_fold_builtin_strlen): Only handle LHS
of integer types.
* tree-ssa-strlen.c (maybe_set_strlen_range): Same.
From-SVN: r261567
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gcc/ChangeLog:
PR tree-optimization/85259
* builtins.c (compute_objsize): Handle constant offsets.
* gimple-ssa-warn-restrict.c (maybe_diag_offset_bounds): Return
true iff a warning has been issued.
* gimple.h (gimple_nonartificial_location): New function.
* tree-ssa-strlen.c (maybe_diag_stxncpy_trunc): Call
gimple_nonartificial_location and handle -Wno-system-headers.
(handle_builtin_stxncpy): Same.
gcc/testsuite/ChangeLog:
PR tree-optimization/85259
* gcc.dg/Wstringop-overflow-5.c: New test.
* gcc.dg/Wstringop-overflow-6.c: New test.
From-SVN: r261518
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gcc/ChangeLog:
PR tree-optimization/86083
* tree-ssa-strlen.c (handle_char_store): Use tree_expr_nonzero_p.
gcc/testsuite/ChangeLog:
PR tree-optimization/86083
* gcc.dg/strlenopt-44.c: New test.
From-SVN: r261452
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2018-06-11 Martin Liska <mliska@suse.cz>
PR tree-optimization/86089
* tree-ssa-strlen.c (get_string_length): Move back removed hunk.
2018-06-11 Martin Liska <mliska@suse.cz>
PR tree-optimization/86089
* gcc.dg/tree-ssa/pr86089.c: New test.
From-SVN: r261434
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2018-06-08 Martin Liska <mliska@suse.cz>
* MAINTAINERS: Remove MPX-related entries.
* Makefile.def: Remove libmpx support.
* Makefile.in: Likewise.
* configure: Remove removed files.
* configure.ac: Likewise.
* libmpx/ChangeLog: Remove.
* libmpx/Makefile.am: Remove.
* libmpx/Makefile.in: Remove.
* libmpx/acinclude.m4: Remove.
* libmpx/aclocal.m4: Remove.
* libmpx/config.h.in: Remove.
* libmpx/configure: Remove.
* libmpx/configure.ac: Remove.
* libmpx/configure.tgt: Remove.
* libmpx/libmpx.spec.in: Remove.
* libmpx/mpxrt/Makefile.am: Remove.
* libmpx/mpxrt/Makefile.in: Remove.
* libmpx/mpxrt/libmpx.map: Remove.
* libmpx/mpxrt/libtool-version: Remove.
* libmpx/mpxrt/mpxrt-utils.c: Remove.
* libmpx/mpxrt/mpxrt-utils.h: Remove.
* libmpx/mpxrt/mpxrt.c: Remove.
* libmpx/mpxrt/mpxrt.h: Remove.
* libmpx/mpxwrap/Makefile.am: Remove.
* libmpx/mpxwrap/Makefile.in: Remove.
* libmpx/mpxwrap/libmpxwrappers.map: Remove.
* libmpx/mpxwrap/libtool-version: Remove.
* libmpx/mpxwrap/mpx_wrappers.c: Remove.
2018-06-08 Martin Liska <mliska@suse.cz>
* bootstrap-mpx.mk: Remove.
2018-06-08 Martin Liska <mliska@suse.cz>
* Makefile.in: Remove support for MPX (macros, related functions,
fields in cgraph_node, ...).
* builtin-types.def (BT_BND): Likewise.
(BT_FN_BND_CONST_PTR): Likewise.
(BT_FN_CONST_PTR_BND): Likewise.
(BT_FN_VOID_PTR_BND): Likewise.
(BT_FN_BND_CONST_PTR_SIZE): Likewise.
(BT_FN_VOID_CONST_PTR_BND_CONST_PTR): Likewise.
* builtins.c (expand_builtin_memcpy_with_bounds): Likewise.
(expand_builtin_mempcpy_with_bounds): Likewise.
(expand_builtin_memset_with_bounds): Likewise.
(expand_builtin_memset_args): Likewise.
(std_expand_builtin_va_start): Likewise.
(expand_builtin): Likewise.
(expand_builtin_with_bounds): Likewise.
* builtins.def (DEF_BUILTIN_CHKP): Likewise.
(DEF_LIB_BUILTIN_CHKP): Likewise.
(DEF_EXT_LIB_BUILTIN_CHKP): Likewise.
(DEF_CHKP_BUILTIN): Likewise.
(BUILT_IN_MEMCPY): Likewise.
(BUILT_IN_MEMMOVE): Likewise.
(BUILT_IN_MEMPCPY): Likewise.
(BUILT_IN_MEMSET): Likewise.
(BUILT_IN_STPCPY): Likewise.
(BUILT_IN_STRCAT): Likewise.
(BUILT_IN_STRCHR): Likewise.
(BUILT_IN_STRCPY): Likewise.
(BUILT_IN_STRLEN): Likewise.
(BUILT_IN_MEMCPY_CHK): Likewise.
(BUILT_IN_MEMMOVE_CHK): Likewise.
(BUILT_IN_MEMPCPY_CHK): Likewise.
(BUILT_IN_MEMSET_CHK): Likewise.
(BUILT_IN_STPCPY_CHK): Likewise.
(BUILT_IN_STRCAT_CHK): Likewise.
(BUILT_IN_STRCPY_CHK): Likewise.
* calls.c (store_bounds): Likewise.
(emit_call_1): Likewise.
(special_function_p): Likewise.
(maybe_warn_nonstring_arg): Likewise.
(initialize_argument_information): Likewise.
(finalize_must_preallocate): Likewise.
(compute_argument_addresses): Likewise.
(expand_call): Likewise.
* cfgexpand.c (expand_call_stmt): Likewise.
(expand_return): Likewise.
(expand_gimple_stmt_1): Likewise.
(pass_expand::execute): Likewise.
* cgraph.c (cgraph_edge::redirect_call_stmt_to_callee): Likewise.
(cgraph_node::remove): Likewise.
(cgraph_node::dump): Likewise.
(cgraph_node::verify_node): Likewise.
* cgraph.h (chkp_function_instrumented_p): Likewise.
(symtab_node::get_alias_target): Likewise.
(cgraph_node::can_remove_if_no_direct_calls_and_refs_p): Likewise.
(cgraph_local_p): Likewise.
* cgraphbuild.c (cgraph_edge::rebuild_edges): Likewise.
(cgraph_edge::rebuild_references): Likewise.
* cgraphunit.c (varpool_node::finalize_decl): Likewise.
(walk_polymorphic_call_targets): Likewise.
(cgraph_node::expand_thunk): Likewise.
(symbol_table::output_weakrefs): Likewise.
* common/config/i386/i386-common.c (OPTION_MASK_ISA2_GENERAL_REGS_ONLY_UNSET): Likewise.
(ix86_handle_option): Likewise.
* config/i386/constraints.md: Likewise.
* config/i386/i386-builtin-types.def (BND): Likewise.
(VOID): Likewise.
(PVOID): Likewise.
(ULONG): Likewise.
* config/i386/i386-builtin.def (BDESC_END): Likewise.
(BDESC_FIRST): Likewise.
(BDESC): Likewise.
* config/i386/i386-c.c (ix86_target_macros_internal): Likewise.
* config/i386/i386-protos.h (ix86_bnd_prefixed_insn_p): Likewise.
* config/i386/i386.c (enum reg_class): Likewise.
(ix86_target_string): Likewise.
(ix86_option_override_internal): Likewise.
(ix86_conditional_register_usage): Likewise.
(ix86_valid_target_attribute_inner_p): Likewise.
(ix86_set_indirect_branch_type): Likewise.
(ix86_set_current_function): Likewise.
(ix86_function_arg_regno_p): Likewise.
(init_cumulative_args): Likewise.
(ix86_function_arg_advance): Likewise.
(ix86_function_arg): Likewise.
(ix86_pass_by_reference): Likewise.
(ix86_function_value_regno_p): Likewise.
(ix86_function_value_1): Likewise.
(ix86_function_value_bounds): Likewise.
(ix86_return_in_memory): Likewise.
(ix86_setup_incoming_vararg_bounds): Likewise.
(ix86_va_start): Likewise.
(indirect_thunk_need_prefix): Likewise.
(print_reg): Likewise.
(ix86_print_operand): Likewise.
(ix86_expand_call): Likewise.
(ix86_output_function_return): Likewise.
(reg_encoded_number): Likewise.
(BDESC_VERIFYS): Likewise.
(ix86_init_mpx_builtins): Likewise.
(ix86_init_builtins): Likewise.
(ix86_emit_cmove): Likewise.
(ix86_emit_move_max): Likewise.
(ix86_expand_builtin): Likewise.
(ix86_builtin_mpx_function): Likewise.
(ix86_get_arg_address_for_bt): Likewise.
(ix86_load_bounds): Likewise.
(ix86_store_bounds): Likewise.
(ix86_load_returned_bounds): Likewise.
(ix86_store_returned_bounds): Likewise.
(ix86_class_likely_spilled_p): Likewise.
(ix86_hard_regno_mode_ok): Likewise.
(x86_order_regs_for_local_alloc): Likewise.
(ix86_mitigate_rop): Likewise.
(ix86_bnd_prefixed_insn_p): Likewise.
(ix86_mpx_bound_mode): Likewise.
(ix86_make_bounds_constant): Likewise.
(ix86_initialize_bounds): Likewise.
(TARGET_LOAD_BOUNDS_FOR_ARG): Likewise.
(TARGET_STORE_BOUNDS_FOR_ARG): Likewise.
(TARGET_LOAD_RETURNED_BOUNDS): Likewise.
(TARGET_STORE_RETURNED_BOUNDS): Likewise.
(TARGET_CHKP_BOUND_MODE): Likewise.
(TARGET_BUILTIN_CHKP_FUNCTION): Likewise.
(TARGET_CHKP_FUNCTION_VALUE_BOUNDS): Likewise.
(TARGET_CHKP_MAKE_BOUNDS_CONSTANT): Likewise.
(TARGET_CHKP_INITIALIZE_BOUNDS): Likewise.
* config/i386/i386.h (TARGET_MPX): Likewise.
(TARGET_MPX_P): Likewise.
(VALID_BND_REG_MODE): Likewise.
(FIRST_BND_REG): Likewise.
(LAST_BND_REG): Likewise.
(enum reg_class): Likewise.
(BND_REG_P): Likewise.
(BND_REGNO_P): Likewise.
(BNDmode): Likewise.
(ADJUST_INSN_LENGTH): Likewise.
* config/i386/i386.md: Likewise.
* config/i386/i386.opt: Likewise.
* config/i386/linux-common.h (LIBMPX_LIBS): Likewise.
(defined): Likewise.
(LINK_MPX): Likewise.
(MPX_SPEC): Likewise.
(LIBMPX_SPEC): Likewise.
(LIBMPXWRAPPERS_SPEC): Likewise.
(CHKP_SPEC): Likewise.
* config/i386/predicates.md: Likewise.
* dbxout.c (dbxout_type): Likewise.
* doc/extend.texi: Likewise.
* doc/invoke.texi: Likewise.
* doc/md.texi: Likewise.
* doc/tm.texi: Likewise.
* doc/tm.texi.in: Likewise.
* dwarf2out.c (is_base_type): Likewise.
(gen_formal_types_die): Likewise.
(gen_subprogram_die): Likewise.
(gen_type_die_with_usage): Likewise.
(gen_decl_die): Likewise.
(dwarf2out_late_global_decl): Likewise.
* expr.c (expand_assignment): Likewise.
(emit_storent_insn): Likewise.
(store_expr_with_bounds): Likewise.
(store_expr): Likewise.
(expand_expr_real_1): Likewise.
* expr.h (store_expr_with_bounds): Likewise.
* function.c (use_register_for_decl): Likewise.
(struct bounds_parm_data): Likewise.
(assign_parms_augmented_arg_list): Likewise.
(assign_parm_find_entry_rtl): Likewise.
(assign_parm_is_stack_parm): Likewise.
(assign_parm_load_bounds): Likewise.
(assign_bounds): Likewise.
(assign_parms): Likewise.
(expand_function_start): Likewise.
* gcc.c (CHKP_SPEC): Likewise.
* gimple-fold.c (gimple_fold_builtin_memory_op): Likewise.
* gimple-ssa-warn-restrict.c (builtin_access::builtin_access): Likewise.
(wrestrict_dom_walker::check_call): Likewise.
* gimple.c (gimple_build_call_from_tree): Likewise.
* gimple.h (enum gf_mask): Likewise.
(gimple_call_with_bounds_p): Likewise.
(gimple_call_set_with_bounds): Likewise.
* gimplify.c (gimplify_init_constructor): Likewise.
* ipa-cp.c (initialize_node_lattices): Likewise.
(propagate_constants_across_call): Likewise.
(find_more_scalar_values_for_callers_subset): Likewise.
* ipa-hsa.c (process_hsa_functions): Likewise.
* ipa-icf-gimple.c (func_checker::compare_gimple_call): Likewise.
* ipa-icf.c (sem_function::merge): Likewise.
* ipa-inline.c (early_inliner): Likewise.
* ipa-pure-const.c (warn_function_noreturn): Likewise.
(warn_function_cold): Likewise.
(propagate_pure_const): Likewise.
* ipa-ref.h (enum GTY): Likewise.
* ipa-split.c (find_retbnd): Likewise.
(consider_split): Likewise.
(split_function): Likewise.
* ipa-visibility.c (cgraph_externally_visible_p): Likewise.
* ipa.c (walk_polymorphic_call_targets): Likewise.
(symbol_table::remove_unreachable_nodes): Likewise.
(process_references): Likewise.
(cgraph_build_static_cdtor_1): Likewise.
* lto-cgraph.c (lto_output_node): Likewise.
(output_refs): Likewise.
(compute_ltrans_boundary): Likewise.
(input_overwrite_node): Likewise.
(input_node): Likewise.
(input_cgraph_1): Likewise.
* params.def (PARAM_CHKP_MAX_CTOR_SIZE): Likewise.
* passes.c (pass_manager::execute_early_local_passes): Likewise.
(class pass_chkp_instrumentation_passes): Likewise.
(make_pass_chkp_instrumentation_passes): Likewise.
* passes.def: Likewise.
* rtl.h (struct GTY): Likewise.
(CALL_EXPR_WITH_BOUNDS_P): Likewise.
* stor-layout.c (layout_type): Likewise.
* symtab.c: Likewise.
* target.def: Likewise.
* targhooks.c (default_chkp_bound_type): Likewise.
(default_chkp_bound_mode): Likewise.
(default_builtin_chkp_function): Likewise.
(default_chkp_function_value_bounds): Likewise.
(default_chkp_make_bounds_constant): Likewise.
(default_chkp_initialize_bounds): Likewise.
* targhooks.h (default_chkp_bound_type): Likewise.
(default_chkp_bound_mode): Likewise.
(default_builtin_chkp_function): Likewise.
(default_chkp_function_value_bounds): Likewise.
(default_chkp_make_bounds_constant): Likewise.
(default_chkp_initialize_bounds): Likewise.
* toplev.c (compile_file): Likewise.
(process_options): Likewise.
* tree-core.h (DEF_BUILTIN): Likewise.
(DEF_BUILTIN_CHKP): Likewise.
* tree-inline.c (declare_return_variable): Likewise.
(remap_gimple_stmt): Likewise.
(copy_bb): Likewise.
(initialize_inlined_parameters): Likewise.
(expand_call_inline): Likewise.
* tree-pass.h (make_pass_ipa_chkp_versioning): Likewise.
(make_pass_ipa_chkp_early_produce_thunks): Likewise.
(make_pass_ipa_chkp_produce_thunks): Likewise.
(make_pass_chkp): Likewise.
(make_pass_chkp_opt): Likewise.
(make_pass_chkp_instrumentation_passes): Likewise.
* tree-pretty-print.c (dump_generic_node): Likewise.
* tree-ssa-ccp.c (insert_clobber_before_stack_restore): Likewise.
* tree-ssa-dce.c (propagate_necessity): Likewise.
(eliminate_unnecessary_stmts): Likewise.
* tree-ssa-pre.c (create_expression_by_pieces): Likewise.
* tree-ssa-sccvn.c (copy_reference_ops_from_call): Likewise.
* tree-ssa-sccvn.h: Likewise.
* tree-ssa-strlen.c (get_string_length): Likewise.
(valid_builtin_call): Likewise.
(adjust_last_stmt): Likewise.
(handle_builtin_strchr): Likewise.
(handle_builtin_strcpy): Likewise.
(handle_builtin_stxncpy): Likewise.
(handle_builtin_memcpy): Likewise.
(handle_builtin_strcat): Likewise.
(strlen_check_and_optimize_stmt): Likewise.
* tree-stdarg.c (expand_ifn_va_arg_1): Likewise.
* tree-streamer-in.c: Likewise.
* tree-streamer.c (record_common_node): Likewise.
* tree.c (tree_code_size): Likewise.
(wide_int_to_tree_1): Likewise.
(type_contains_placeholder_1): Likewise.
(build_common_tree_nodes): Likewise.
* tree.def (POINTER_BOUNDS_TYPE): Likewise.
* tree.h (POINTER_BOUNDS_TYPE_P): Likewise.
(POINTER_BOUNDS_P): Likewise.
(BOUNDED_TYPE_P): Likewise.
(BOUNDED_P): Likewise.
(CALL_WITH_BOUNDS_P): Likewise.
(pointer_bounds_type_node): Likewise.
* value-prof.c (gimple_ic): Likewise.
* var-tracking.c (vt_add_function_parameters): Likewise.
* varasm.c (make_decl_rtl): Likewise.
(assemble_start_function): Likewise.
(output_constant): Likewise.
(maybe_assemble_visibility): Likewise.
* varpool.c (ctor_for_folding): Likewise.
* chkp-builtins.def: Remove.
* ipa-chkp.c: Remove.
* ipa-chkp.h: Remove.
* rtl-chkp.c: Remove.
* rtl-chkp.h: Remove.
* tree-chkp-opt.c: Remove.
* tree-chkp.c: Remove.
* tree-chkp.h: Remove.
2018-06-08 Martin Liska <mliska@suse.cz>
* c-attribs.c (handle_bnd_variable_size_attribute): Remove support
for MPX (macros, related functions, fields in cgraph_node, ...).
(handle_bnd_legacy): Likewise.
(handle_bnd_instrument): Likewise.
* c.opt: Likewise.
2018-06-08 Martin Liska <mliska@suse.cz>
* lto-partition.c (add_references_to_partition): Remove support
for MPX (macros, related functions, fields in cgraph_node, ...).
(add_symbol_to_partition_1): Likewise.
(privatize_symbol_name): Likewise.
* lto-symtab.c (lto_cgraph_replace_node): Likewise.
2018-06-08 Martin Liska <mliska@suse.cz>
* g++.dg/dg.exp: Do not use mpx.exp.
* g++.dg/lto/lto.exp: Likewise.
* g++.dg/lto/pr69729_0.C: Remove.
* g++.dg/opt/pr71529.C: Remove.
* g++.dg/pr63995-1.C: Remove.
* g++.dg/pr68270.C: Remove.
* g++.dg/pr71624.C: Remove.
* g++.dg/pr71633.C: Remove.
* g++.dg/pr79761.C: Remove.
* g++.dg/pr79764.C: Remove.
* g++.dg/pr79769.C: Remove.
* gcc.dg/lto/chkp-privatize-1_0.c: Remove.
* gcc.dg/lto/chkp-privatize-2_0.c: Remove.
* gcc.dg/lto/chkp-privatize_0.c: Remove.
* gcc.dg/lto/chkp-removed-alias_0.c: Remove.
* gcc.dg/lto/chkp-static-bounds_0.c: Remove.
* gcc.dg/lto/chkp-wrap-asm-name_0.c: Remove.
* gcc.dg/lto/lto.exp: Do not use mpx.exp.
* gcc.dg/lto/pr66221_0.c: Remove.
* gcc.target/i386/chkp-always_inline.c: Remove.
* gcc.target/i386/chkp-bndret.c: Remove.
* gcc.target/i386/chkp-builtins-1.c: Remove.
* gcc.target/i386/chkp-builtins-2.c: Remove.
* gcc.target/i386/chkp-builtins-3.c: Remove.
* gcc.target/i386/chkp-builtins-4.c: Remove.
* gcc.target/i386/chkp-const-check-1.c: Remove.
* gcc.target/i386/chkp-const-check-2.c: Remove.
* gcc.target/i386/chkp-hidden-def.c: Remove.
* gcc.target/i386/chkp-label-address.c: Remove.
* gcc.target/i386/chkp-lifetime-1.c: Remove.
* gcc.target/i386/chkp-narrow-bounds.c: Remove.
* gcc.target/i386/chkp-pr69044.c: Remove.
* gcc.target/i386/chkp-remove-bndint-1.c: Remove.
* gcc.target/i386/chkp-remove-bndint-2.c: Remove.
* gcc.target/i386/chkp-strchr.c: Remove.
* gcc.target/i386/chkp-strlen-1.c: Remove.
* gcc.target/i386/chkp-strlen-2.c: Remove.
* gcc.target/i386/chkp-strlen-3.c: Remove.
* gcc.target/i386/chkp-strlen-4.c: Remove.
* gcc.target/i386/chkp-strlen-5.c: Remove.
* gcc.target/i386/chkp-stropt-1.c: Remove.
* gcc.target/i386/chkp-stropt-10.c: Remove.
* gcc.target/i386/chkp-stropt-11.c: Remove.
* gcc.target/i386/chkp-stropt-12.c: Remove.
* gcc.target/i386/chkp-stropt-13.c: Remove.
* gcc.target/i386/chkp-stropt-14.c: Remove.
* gcc.target/i386/chkp-stropt-15.c: Remove.
* gcc.target/i386/chkp-stropt-16.c: Remove.
* gcc.target/i386/chkp-stropt-17.c: Remove.
* gcc.target/i386/chkp-stropt-2.c: Remove.
* gcc.target/i386/chkp-stropt-3.c: Remove.
* gcc.target/i386/chkp-stropt-4.c: Remove.
* gcc.target/i386/chkp-stropt-5.c: Remove.
* gcc.target/i386/chkp-stropt-6.c: Remove.
* gcc.target/i386/chkp-stropt-7.c: Remove.
* gcc.target/i386/chkp-stropt-8.c: Remove.
* gcc.target/i386/chkp-stropt-9.c: Remove.
* gcc.target/i386/i386.exp: Do not use mpx.exp.
* gcc.target/i386/indirect-thunk-11.c: Remove.
* gcc.target/i386/indirect-thunk-12.c: Remove.
* gcc.target/i386/indirect-thunk-attr-12.c: Remove.
* gcc.target/i386/indirect-thunk-attr-13.c: Remove.
* gcc.target/i386/indirect-thunk-bnd-1.c: Remove.
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* gcc.target/i386/indirect-thunk-bnd-3.c: Remove.
* gcc.target/i386/indirect-thunk-bnd-4.c: Remove.
* gcc.target/i386/interrupt-bnd-err-1.c: Remove.
* gcc.target/i386/interrupt-bnd-err-2.c: Remove.
* gcc.target/i386/mpx/alloca-1-lbv.c: Remove.
* gcc.target/i386/mpx/alloca-1-nov.c: Remove.
* gcc.target/i386/mpx/alloca-1-ubv.c: Remove.
* gcc.target/i386/mpx/arg-addr-1-lbv.c: Remove.
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* gcc.target/i386/mpx/bitfields-1-lbv.c: Remove.
* gcc.target/i386/mpx/bitfields-1-nov.c: Remove.
* gcc.target/i386/mpx/bitfields-1-ubv.c: Remove.
* gcc.target/i386/mpx/builtin-bnd-chk-ptr-bounds-1-lbv.c: Remove.
* gcc.target/i386/mpx/builtin-bnd-chk-ptr-bounds-1-nov.c: Remove.
* gcc.target/i386/mpx/builtin-bnd-chk-ptr-bounds-1-ubv.c: Remove.
* gcc.target/i386/mpx/builtin-bnd-chk-ptr-bounds-2.c: Remove.
* gcc.target/i386/mpx/builtin-bnd-chk-ptr-lbounds-1-lbv.c: Remove.
* gcc.target/i386/mpx/builtin-bnd-chk-ptr-lbounds-1-nov.c: Remove.
* gcc.target/i386/mpx/builtin-bnd-chk-ptr-lbounds-2.c: Remove.
* gcc.target/i386/mpx/builtin-bnd-chk-ptr-ubounds-1-nov.c: Remove.
* gcc.target/i386/mpx/builtin-bnd-chk-ptr-ubounds-1-ubv.c: Remove.
* gcc.target/i386/mpx/builtin-bnd-chk-ptr-ubounds-2.c: Remove.
* gcc.target/i386/mpx/builtin-bnd-copy-ptr-bounds-1.c: Remove.
* gcc.target/i386/mpx/builtin-bnd-copy-ptr-bounds-2-lbv.c: Remove.
* gcc.target/i386/mpx/builtin-bnd-copy-ptr-bounds-2-nov.c: Remove.
* gcc.target/i386/mpx/builtin-bnd-copy-ptr-bounds-2-ubv.c: Remove.
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* gcc.target/i386/mpx/builtin-bnd-get-ptr-lbound-1.c: Remove.
* gcc.target/i386/mpx/builtin-bnd-get-ptr-lbound-2.c: Remove.
* gcc.target/i386/mpx/builtin-bnd-get-ptr-ubound-1.c: Remove.
* gcc.target/i386/mpx/builtin-bnd-get-ptr-ubound-2.c: Remove.
* gcc.target/i386/mpx/builtin-bnd-init-ptr-bounds-1.c: Remove.
* gcc.target/i386/mpx/builtin-bnd-init-ptr-bounds-2-nov.c: Remove.
* gcc.target/i386/mpx/builtin-bnd-init-ptr-bounds-3.c: Remove.
* gcc.target/i386/mpx/builtin-bnd-narrow-ptr-bounds-1.c: Remove.
* gcc.target/i386/mpx/builtin-bnd-narrow-ptr-bounds-2-lbv.c: Remove.
* gcc.target/i386/mpx/builtin-bnd-narrow-ptr-bounds-2-nov.c: Remove.
* gcc.target/i386/mpx/builtin-bnd-narrow-ptr-bounds-2-ubv.c: Remove.
* gcc.target/i386/mpx/builtin-bnd-narrow-ptr-bounds-3-lbv.c: Remove.
* gcc.target/i386/mpx/builtin-bnd-narrow-ptr-bounds-3-nov.c: Remove.
* gcc.target/i386/mpx/builtin-bnd-narrow-ptr-bounds-3-ubv.c: Remove.
* gcc.target/i386/mpx/builtin-bnd-narrow-ptr-bounds-4.c: Remove.
* gcc.target/i386/mpx/builtin-bnd-null-ptr-bounds-1-bbv.c: Remove.
* gcc.target/i386/mpx/builtin-bnd-set-ptr-bounds-1.c: Remove.
* gcc.target/i386/mpx/builtin-bnd-set-ptr-bounds-2-lbv.c: Remove.
* gcc.target/i386/mpx/builtin-bnd-set-ptr-bounds-2-nov.c: Remove.
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* gcc.target/i386/mpx/builtin-bnd-set-ptr-bounds-3.c: Remove.
* gcc.target/i386/mpx/builtin-bnd-store-ptr-bounds-1-lbv.c: Remove.
* gcc.target/i386/mpx/builtin-bnd-store-ptr-bounds-1-nov.c: Remove.
* gcc.target/i386/mpx/builtin-bnd-store-ptr-bounds-1-ubv.c: Remove.
* gcc.target/i386/mpx/builtin-bnd-store-ptr-bounds-2.c: Remove.
* gcc.target/i386/mpx/calloc-1-lbv.c: Remove.
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* gcc.target/i386/mpx/chkp-fix-calls-1.c: Remove.
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* gcc.target/i386/mpx/chkp-thunk-comdat-1.cc: Remove.
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* gcc.target/i386/mpx/chkp-thunk-comdat-3.c: Remove.
* gcc.target/i386/mpx/fastcall-1-lbv.c: Remove.
* gcc.target/i386/mpx/fastcall-1-nov.c: Remove.
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* gcc.target/i386/mpx/fastcall-2-lbv.c: Remove.
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* gcc.target/i386/mpx/field-addr-1-lbv.c: Remove.
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* gcc.target/i386/mpx/field-addr-8-nov.c: Remove.
* gcc.target/i386/mpx/field-addr-8-ubv.c: Remove.
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* gcc.target/i386/mpx/field-addr-9-ubv.c: Remove.
* gcc.target/i386/mpx/frame-address-1-nov.c: Remove.
* gcc.target/i386/mpx/hard-reg-1-nov.c: Remove.
* gcc.target/i386/mpx/hard-reg-2-lbv.c: Remove.
* gcc.target/i386/mpx/hard-reg-2-nov.c: Remove.
* gcc.target/i386/mpx/hard-reg-2-ubv.c: Remove.
* gcc.target/i386/mpx/if-stmt-1-lbv.c: Remove.
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* gcc.target/i386/mpx/label-address-1.c: Remove.
* gcc.target/i386/mpx/legacy-1-nov.c: Remove.
* gcc.target/i386/mpx/macro.c: Remove.
* gcc.target/i386/mpx/malloc-1-lbv.c: Remove.
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* gcc.target/i386/mpx/memcpy-1.c: Remove.
* gcc.target/i386/mpx/memmove-1.c: Remove.
* gcc.target/i386/mpx/memmove-2.c: Remove.
* gcc.target/i386/mpx/memmove-zero-length.c: Remove.
* gcc.target/i386/mpx/mpx-check.h: Remove.
* gcc.target/i386/mpx/mpx-os-support.h: Remove.
* gcc.target/i386/mpx/mpx.exp: Remove.
* gcc.target/i386/mpx/nested-function-1-lbv.c: Remove.
* gcc.target/i386/mpx/nested-function-1-nov.c: Remove.
* gcc.target/i386/mpx/nested-function-1-ubv.c: Remove.
* gcc.target/i386/mpx/pointer-arg-1-lbv.c: Remove.
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* gcc.target/i386/mpx/pointer-diff-1.c: Remove.
* gcc.target/i386/mpx/pointer-store-1-lbv.c: Remove.
* gcc.target/i386/mpx/pointer-store-1-nov.c: Remove.
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* gcc.target/i386/mpx/pr65508.c: Remove.
* gcc.target/i386/mpx/pr65531.cc: Remove.
* gcc.target/i386/mpx/pr66048.cc: Remove.
* gcc.target/i386/mpx/pr66134.c: Remove.
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* gcc.target/i386/mpx/pr68337-1.c: Remove.
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* gcc.target/i386/mpx/pr68416.c: Remove.
* gcc.target/i386/mpx/pr78339.c: Remove.
* gcc.target/i386/mpx/pr79631.c: Remove.
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* gcc.target/i386/mpx/pr79753.c: Remove.
* gcc.target/i386/mpx/pr79770.c: Remove.
* gcc.target/i386/mpx/pr79987.c: Remove.
* gcc.target/i386/mpx/pr79988.c: Remove.
* gcc.target/i386/mpx/realloc-1-lbv.c: Remove.
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* gcc.target/i386/mpx/realloc-2-lbv.c: Remove.
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* gcc.target/i386/mpx/reference-1-lbv.cpp: Remove.
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* gcc.target/i386/mpx/reference-2-lbv.cpp: Remove.
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* gcc.target/i386/mpx/reference-3-lbv.cpp: Remove.
* gcc.target/i386/mpx/reference-3-nov.cpp: Remove.
* gcc.target/i386/mpx/reference-3-ubv.cpp: Remove.
* gcc.target/i386/mpx/reference-4-lbv.cpp: Remove.
* gcc.target/i386/mpx/reference-4-nov.cpp: Remove.
* gcc.target/i386/mpx/reference-4-ubv.cpp: Remove.
* gcc.target/i386/mpx/return-pointer-1-lbv.c: Remove.
* gcc.target/i386/mpx/return-pointer-1-nov.c: Remove.
* gcc.target/i386/mpx/return-pointer-1-ubv.c: Remove.
* gcc.target/i386/mpx/return-struct-1-lbv.c: Remove.
* gcc.target/i386/mpx/return-struct-1-nov.c: Remove.
* gcc.target/i386/mpx/return-struct-1-ubv.c: Remove.
* gcc.target/i386/mpx/return-struct-2-lbv.c: Remove.
* gcc.target/i386/mpx/return-struct-2-nov.c: Remove.
* gcc.target/i386/mpx/return-struct-2-ubv.c: Remove.
* gcc.target/i386/mpx/return-struct-3-lbv.c: Remove.
* gcc.target/i386/mpx/return-struct-3-nov.c: Remove.
* gcc.target/i386/mpx/return-struct-3-ubv.c: Remove.
* gcc.target/i386/mpx/return-struct-4-lbv.c: Remove.
* gcc.target/i386/mpx/return-struct-4-nov.c: Remove.
* gcc.target/i386/mpx/return-struct-4-ubv.c: Remove.
* gcc.target/i386/mpx/return-struct-5-lbv.c: Remove.
* gcc.target/i386/mpx/return-struct-5-nov.c: Remove.
* gcc.target/i386/mpx/return-struct-5-ubv.c: Remove.
* gcc.target/i386/mpx/return-struct-6-lbv.c: Remove.
* gcc.target/i386/mpx/return-struct-6-nov.c: Remove.
* gcc.target/i386/mpx/return-struct-6-ubv.c: Remove.
* gcc.target/i386/mpx/sincos-1-nov.c: Remove.
* gcc.target/i386/mpx/static-array-1-lbv.c: Remove.
* gcc.target/i386/mpx/static-array-1-nov.c: Remove.
* gcc.target/i386/mpx/static-array-1-ubv.c: Remove.
* gcc.target/i386/mpx/static-init-1-lbv.c: Remove.
* gcc.target/i386/mpx/static-init-1-nov.c: Remove.
* gcc.target/i386/mpx/static-init-1-ubv.c: Remove.
* gcc.target/i386/mpx/static-init-2-lbv.c: Remove.
* gcc.target/i386/mpx/static-init-2-nov.c: Remove.
* gcc.target/i386/mpx/static-init-2-ubv.c: Remove.
* gcc.target/i386/mpx/static-init-3-lbv.c: Remove.
* gcc.target/i386/mpx/static-init-3-nov.c: Remove.
* gcc.target/i386/mpx/static-init-3-ubv.c: Remove.
* gcc.target/i386/mpx/static-init-4-lbv.c: Remove.
* gcc.target/i386/mpx/static-init-4-nov.c: Remove.
* gcc.target/i386/mpx/static-init-4-ubv.c: Remove.
* gcc.target/i386/mpx/static-init-5-lbv.c: Remove.
* gcc.target/i386/mpx/static-init-5-nov.c: Remove.
* gcc.target/i386/mpx/static-init-5-ubv.c: Remove.
* gcc.target/i386/mpx/static-init-6-lbv.c: Remove.
* gcc.target/i386/mpx/static-init-6-nov.c: Remove.
* gcc.target/i386/mpx/static-init-6-ubv.c: Remove.
* gcc.target/i386/mpx/static-string-1-lbv.c: Remove.
* gcc.target/i386/mpx/static-string-1-nov.c: Remove.
* gcc.target/i386/mpx/static-string-1-ubv.c: Remove.
* gcc.target/i386/mpx/struct-arg-1-lbv.c: Remove.
* gcc.target/i386/mpx/struct-arg-1-nov.c: Remove.
* gcc.target/i386/mpx/struct-arg-1-ubv.c: Remove.
* gcc.target/i386/mpx/struct-arg-10-lbv.c: Remove.
* gcc.target/i386/mpx/struct-arg-10-nov.c: Remove.
* gcc.target/i386/mpx/struct-arg-10-ubv.c: Remove.
* gcc.target/i386/mpx/struct-arg-2-lbv.c: Remove.
* gcc.target/i386/mpx/struct-arg-2-nov.c: Remove.
* gcc.target/i386/mpx/struct-arg-2-ubv.c: Remove.
* gcc.target/i386/mpx/struct-arg-3-lbv.c: Remove.
* gcc.target/i386/mpx/struct-arg-3-nov.c: Remove.
* gcc.target/i386/mpx/struct-arg-3-ubv.c: Remove.
* gcc.target/i386/mpx/struct-arg-4-lbv.c: Remove.
* gcc.target/i386/mpx/struct-arg-4-nov.c: Remove.
* gcc.target/i386/mpx/struct-arg-4-ubv.c: Remove.
* gcc.target/i386/mpx/struct-arg-5-lbv.c: Remove.
* gcc.target/i386/mpx/struct-arg-5-nov.c: Remove.
* gcc.target/i386/mpx/struct-arg-5-ubv.c: Remove.
* gcc.target/i386/mpx/struct-arg-6-lbv.c: Remove.
* gcc.target/i386/mpx/struct-arg-6-nov.c: Remove.
* gcc.target/i386/mpx/struct-arg-6-ubv.c: Remove.
* gcc.target/i386/mpx/struct-arg-7-lbv.c: Remove.
* gcc.target/i386/mpx/struct-arg-7-nov.c: Remove.
* gcc.target/i386/mpx/struct-arg-7-ubv.c: Remove.
* gcc.target/i386/mpx/struct-arg-8-lbv.c: Remove.
* gcc.target/i386/mpx/struct-arg-8-nov.c: Remove.
* gcc.target/i386/mpx/struct-arg-8-ubv.c: Remove.
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* gcc.target/i386/mpx/struct-arg-9-nov.c: Remove.
* gcc.target/i386/mpx/struct-arg-9-ubv.c: Remove.
* gcc.target/i386/mpx/struct-copy-1-lbv.c: Remove.
* gcc.target/i386/mpx/struct-copy-1-nov.c: Remove.
* gcc.target/i386/mpx/struct-copy-1-ubv.c: Remove.
* gcc.target/i386/mpx/struct-copy-2-lbv.c: Remove.
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* gcc.target/i386/mpx/struct-copy-2-ubv.c: Remove.
* gcc.target/i386/mpx/thread-local-var-1-lbv.c: Remove.
* gcc.target/i386/mpx/thread-local-var-1-nov.c: Remove.
* gcc.target/i386/mpx/thread-local-var-1-ubv.c: Remove.
* gcc.target/i386/mpx/union-arg-1-lbv.c: Remove.
* gcc.target/i386/mpx/union-arg-1-nov.c: Remove.
* gcc.target/i386/mpx/union-arg-1-ubv.c: Remove.
* gcc.target/i386/mpx/va-arg-pack-1-lbv.c: Remove.
* gcc.target/i386/mpx/va-arg-pack-1-nov.c: Remove.
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* gcc.target/i386/mpx/va-arg-pack-2-lbv.c: Remove.
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* gcc.target/i386/mpx/va-arg-pack-2-ubv.c: Remove.
* gcc.target/i386/mpx/vararg-1-lbv.c: Remove.
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* gcc.target/i386/mpx/vararg-1-ubv.c: Remove.
* gcc.target/i386/mpx/vararg-2-lbv.c: Remove.
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* gcc.target/i386/mpx/vararg-2-ubv.c: Remove.
* gcc.target/i386/mpx/vararg-3-lbv.c: Remove.
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* gcc.target/i386/mpx/vararg-4-lbv.c: Remove.
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* gcc.target/i386/mpx/vararg-4-ubv.c: Remove.
* gcc.target/i386/mpx/vararg-5-lbv.c: Remove.
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* gcc.target/i386/mpx/vararg-8-nov.c: Remove.
* gcc.target/i386/mpx/vararg-8-ubv.c: Remove.
* gcc.target/i386/mpx/vla-1-lbv.c: Remove.
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* gcc.target/i386/mpx/vla-1-ubv.c: Remove.
* gcc.target/i386/mpx/vla-2-lbv.c: Remove.
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* gcc.target/i386/mpx/vla-trailing-1-lbv.c: Remove.
* gcc.target/i386/mpx/vla-trailing-1-nov.c: Remove.
* gcc.target/i386/mpx/vla-trailing-1-ubv.c: Remove.
* gcc.target/i386/pr63995-2.c: Remove.
* gcc.target/i386/pr64805.c: Remove.
* gcc.target/i386/pr65044.c: Remove.
* gcc.target/i386/pr65167.c: Remove.
* gcc.target/i386/pr65183.c: Remove.
* gcc.target/i386/pr65184.c: Remove.
* gcc.target/i386/pr65523.c: Remove.
* gcc.target/i386/pr70876.c: Remove.
* gcc.target/i386/pr70877.c: Remove.
* gcc.target/i386/pr71458.c: Remove.
* gcc.target/i386/pr80880.c: Remove.
* gcc.target/i386/ret-thunk-25.c: Remove.
* gcc.target/i386/thunk-retbnd.c: Remove.
* lib/mpx-dg.exp: Remove.
* gcc.target/i386/funcspec-56.inc: Adjust test case.
From-SVN: r261304
|
|
Patch for PR83026
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78809
Inline strcmp with small constant strings
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83026
missing strlen optimization for strcmp of unequal strings
The design doc for PR78809 is at:
https://www.mail-archive.com/gcc@gcc.gnu.org/msg83822.html
this patch is for the second part of change of PR78809 and PR83026:
B. for strncmp (s1, s2, n) (!)= 0 or strcmp (s1, s2) (!)= 0
B.1. (PR83026) When the lengths of both arguments are constant and
it's a strcmp:
* if the lengths are NOT equal, we can safely fold the call
to a non-zero value.
* otherwise, do nothing now.
B.2. (PR78809) When the length of one argument is constant, try to replace
the call with a __builtin_str(n)cmp_eq call where possible, i.e:
strncmp (s, STR, C) (!)= 0 in which, s is a pointer to a string, STR is a
string with constant length, C is a constant.
if (C <= strlen(STR) && sizeof_array(s) > C)
{
replace this call with
__builtin_strncmp_eq (s, STR, C) (!)= 0
}
if (C > strlen(STR)
{
it can be safely treated as a call to strcmp (s, STR) (!)= 0
can handled by the following strcmp.
}
strcmp (s, STR) (!)= 0 in which, s is a pointer to a string, STR is a
string with constant length.
if (sizeof_array(s) > strlen(STR))
{
replace this call with
__builtin_strcmp_eq (s, STR, strlen(STR)+1) (!)= 0
}
later when expanding the new __builtin_str(n)cmp_eq calls, first expand them
as __builtin_memcmp_eq, if the expansion does not succeed, change them back
to call to __builtin_str(n)cmp.
adding test case strcmpopt_2.c and strcmpopt_4.c into gcc.dg for part B of
PR78809 adding test case strcmpopt_3.c into gcc.dg for PR83026
From-SVN: r261039
|
|
In this PR we have:
c_5 = c_4(D) + 4;
c_12 = c_5 + 1;
*c_5 = 2;
a = 2; // A
c_21 = c_12 + 1;
*c_12 = 2;
a = 2; // B
c_28 = c_21 + 1;
*c_21 = 2;
a = 2;
c_7 = c_28 + 1;
*c_28 = 2;
where a is a global int. We decide that A can't clobber *c_5 == c_4[4]
because the latter implies that c_4 is an object of 5 bytes or more,
whereas a has exactly 4 bytes.
The assumption for B and *c_5 is the same, but when considering B and
*c_12, we only follow the definition of c_12 to c_5 + 1 (for good
reason) and so have *c_12 == c_5[1]. We then don't have the same
size guarantee and so assume that B could clobber *c_12. This leads
to a situation in which the strinfo for c_5 is still valid but the
next strinfo (c_12) isn't. We then segfaulted while trying to get
the strinfo for c_21 + 1 == c_5 + 3 because get_stridx_plus_constant
assumed that c_5's next strinfo (c_12) would be valid too.
And of course it should be valid really. It doesn't make sense for the
string based at c_5 to be valid but a substring of it to be invalid.
I don't think we can guarantee that such weird corner cases never
happen though, even if we tried to avoid this one.
One possibility would be to mark c_12 as valid on the basis that c_5
is valid, but I'm not sure the complication is worth it given that it
seems to trigger very rarely. A better optimisation would be to get
the unroller to clean up after itself a bit more...
Although this particular instance of the bug relies on r249880, I think
we could have similar problems in GCC 7. It would be much harder to
trigger though, especially since it relies on unfolded IR like the above.
2018-05-21 Richard Sandiford <richard.sandiford@linaro.org>
gcc/
PR tree-optimization/85814
* tree-ssa-strlen.c (get_stridx_plus_constant): Cope with
a null return from get_strinfo when unsharing the next
strinfo in the chain.
gcc/testsuite/
PR tree-optimization/85814
* gcc.dg/torture/pr85814.c: New test.
From-SVN: r260488
|
|
memcpy in an inline function
gcc/ChangeLog:
PR tree-optimization/83456
* gimple-fold.c (gimple_fold_builtin_memory_op): Avoid warning
for perfectly overlapping calls to memcpy.
(gimple_fold_builtin_memory_chk): Same.
(gimple_fold_builtin_strcpy): Handle no-warning.
(gimple_fold_builtin_stxcpy_chk): Same.
* tree-ssa-strlen.c (maybe_diag_stxncpy_trunc): Handle no-warning.
gcc/c-family/ChangeLog:
PR tree-optimization/83456
* gcc/c-family/c-common.c (check_function_restrict): Return bool.
Restore checking of bounded built-in functions.
(check_function_arguments): Also return the result
of warn_for_restrict.
* gcc/c-family/c-common.c (check_function_restrict): Return bool.
* gcc/c-family/c-warn.c (warn_for_restrict): Return bool.
gcc/testsuite/ChangeLog:
PR tree-optimization/83456
* c-c++-common/Wrestrict-2.c: Remove test cases.
* c-c++-common/Wrestrict.c: Same.
* gcc.dg/Wrestrict-12.c: New test.
* gcc.dg/Wrestrict-14.c: New test.
From-SVN: r258455
|
|
after conditional strncpy
gcc/ChangeLog:
PR tree-optimization/84468
* tree-ssa-strlen.c (maybe_diag_stxncpy_trunc): Consider successor
basic block when looking for nul assignment.
gcc/testsuite/ChangeLog:
PR tree-optimization/84468
* g++.dg/warn/Wstringop-truncation-2.C: New test.
* gcc.dg/Wstringop-truncation.c: New test.
* gcc.dg/Wstringop-truncation-2.c: New test.
From-SVN: r258339
|
|
gcc/ChangeLog:
PR translation/84207
* diagnostic-core.h (warning_n, error_n, inform_n): Change
n argument to unsigned HOST_WIDE_INT.
* diagnostic.c (warning_n, error_n, inform_n): Ditto.
(diagnostic_n_impl): Ditto. Handle arguments in excess of LONG_MAX.
* gimple-ssa-sprintf.c (format_directive): Simplify inform_n call.
* tree-ssa-strlen.c (maybe_diag_stxncpy_trunc): Use warning_n.
From-SVN: r258044
|
|
with an inlined string literal
gcc/ChangeLog:
PR tree-optimization/84480
* gimple-fold.c (gimple_fold_builtin_strcpy): Move warnings
to maybe_diag_stxncpy_trunc. Call it.
* tree-ssa-strlen.c (maybe_diag_stxncpy_trunc): Integrate warnings
from gimple_fold_builtin_strcpy. Print inlining stack.
(handle_builtin_stxncpy): Print inlining stack.
* tree-ssa-strlen.h (maybe_diag_stxncpy_trunc): Declare.
gcc/testsuite/ChangeLog:
PR tree-optimization/84480
* c-c++-common/Wstringop-truncation.c: Adjust text of expected warnings.
* g++.dg/warn/Wstringop-truncation-1.C: New test.
From-SVN: r257910
|
|
PR tree-optimization/84383
* tree-ssa-strlen.c (maybe_diag_stxncpy_trunc): Don't look at
dstoff nor call operand_equal_p if dstbase is NULL.
* gcc.c-torture/compile/pr84383.c: New test.
From-SVN: r257684
|
|
plus_expr in to_wide, at tree.h:5527)
PR tree-optimization/84238
* tree-ssa-strlen.c (maybe_diag_stxncpy_trunc): Verify the result of
get_range_strlen.
* gcc.dg/Wstringop-overflow-3.c: New test.
From-SVN: r257497
|
|
PR tree-optimization/84228
* tree-ssa-strlen.c (maybe_diag_stxncpy_trunc): Skip debug statements.
* c-c++-common/Wstringop-truncation-3.c: New test.
From-SVN: r257411
|
|
PR tree-optimization/83896 - ice in get_string_len on a call to strlen with
non-constant length
gcc/ChangeLog:
PR tree-optimization/83896
* tree-ssa-strlen.c (get_string_len): Rename...
(get_string_cst_length): ...to this. Return HOST_WIDE_INT.
Avoid assuming length is constant.
(handle_char_store): Use HOST_WIDE_INT for string length.
gcc/testsuite/ChangeLog:
PR tree-optimization/83896
* gcc.dg/strlenopt-43.c: New test.
From-SVN: r257100
|
|
2018-01-11 Martin Sebor <msebor@gmail.com>
Prathamesh Kulkarni <prathamesh.kulkarni@linaro.org>
PR tree-optimization/83501
PR tree-optimization/81703
* tree-ssa-strlen.c (get_string_cst): Rename...
(get_string_len): ...to this. Handle global constants.
(handle_char_store): Adjust.
testsuite/
* gcc.dg/strlenopt-39.c: New test-case.
* gcc.dg/pr81703.c: Likewise.
Co-Authored-By: Prathamesh Kulkarni <prathamesh.kulkarni@linaro.org>
From-SVN: r256475
|
|
This patch changes GET_MODE_BITSIZE from an unsigned short
to a poly_uint16.
2018-01-03 Richard Sandiford <richard.sandiford@linaro.org>
Alan Hayward <alan.hayward@arm.com>
David Sherwood <david.sherwood@arm.com>
gcc/
* machmode.h (mode_to_bits): Return a poly_uint16 rather than an
unsigned short.
(GET_MODE_BITSIZE): Return a constant if ONLY_FIXED_SIZE_MODES,
or if measurement_type is polynomial.
* calls.c (shift_return_value): Treat GET_MODE_BITSIZE as polynomial.
* combine.c (make_extraction): Likewise.
* dse.c (find_shift_sequence): Likewise.
* dwarf2out.c (mem_loc_descriptor): Likewise.
* expmed.c (store_integral_bit_field, extract_bit_field_1): Likewise.
(extract_bit_field, extract_low_bits): Likewise.
* expr.c (convert_move, convert_modes, emit_move_insn_1): Likewise.
(optimize_bitfield_assignment_op, expand_assignment): Likewise.
(store_expr_with_bounds, store_field, expand_expr_real_1): Likewise.
* fold-const.c (optimize_bit_field_compare, merge_ranges): Likewise.
* gimple-fold.c (optimize_atomic_compare_exchange_p): Likewise.
* reload.c (find_reloads): Likewise.
* reload1.c (alter_reg): Likewise.
* stor-layout.c (bitwise_mode_for_mode, compute_record_mode): Likewise.
* targhooks.c (default_secondary_memory_needed_mode): Likewise.
* tree-if-conv.c (predicate_mem_writes): Likewise.
* tree-ssa-strlen.c (handle_builtin_memcmp): Likewise.
* tree-vect-patterns.c (adjust_bool_pattern): Likewise.
* tree-vect-stmts.c (vectorizable_simd_clone_call): Likewise.
* valtrack.c (dead_debug_insert_temp): Likewise.
* varasm.c (mergeable_constant_section): Likewise.
* config/sh/sh.h (LOCAL_ALIGNMENT): Use as_a <fixed_size_mode>.
gcc/ada/
* gcc-interface/misc.c (enumerate_modes): Treat GET_MODE_BITSIZE
as polynomial.
gcc/c-family/
* c-ubsan.c (ubsan_instrument_shift): Treat GET_MODE_BITSIZE
as polynomial.
Co-Authored-By: Alan Hayward <alan.hayward@arm.com>
Co-Authored-By: David Sherwood <david.sherwood@arm.com>
From-SVN: r256200
|
|
2018-01-03 Prathamesh Kulkarni <prathamesh.kulkarni@linaro.org>
PR tree-optimization/83501
* tree-ssa-strlen.c (get_string_cst): New.
(handle_char_store): Call get_string_cst.
testsuite/
* gcc.dg/tree-ssa/pr83501.c: New test.
From-SVN: r256180
|
|
2018-01-03 Martin Liska <mliska@suse.cz>
PR tree-optimization/83593
* tree-ssa-strlen.c: Include tree-cfg.h.
(strlen_check_and_optimize_stmt): Add new argument cleanup_eh.
(strlen_dom_walker): Add new member variable m_cleanup_cfg.
(strlen_dom_walker::strlen_dom_walker): Initialize m_cleanup_cfg
to false.
(strlen_dom_walker::before_dom_children): Call
gimple_purge_dead_eh_edges. Dump tranformation with details
dump flags.
(strlen_dom_walker::before_dom_children): Update call by adding
new argument cleanup_eh.
(pass_strlen::execute): Return TODO_cleanup_cfg if needed.
2018-01-03 Martin Liska <mliska@suse.cz>
PR tree-optimization/83593
* gcc.dg/pr83593.c: New test.
From-SVN: r256178
|
|
From-SVN: r256169
|
|
2017-12-27 Martin Liska <mliska@suse.cz>
PR tree-optimization/83552
* tree-ssa-strlen.c (fold_strstr_to_strncmp): Assign result
of get_string_lenth to a SSA_NAME if not a GIMPLE value.
2017-12-27 Martin Liska <mliska@suse.cz>
PR tree-optimization/83552
* gcc.dg/pr83552.c: New test.
From-SVN: r256009
|
|
This patch changes the values returned by
get_addr_base_and_unit_offset from HOST_WIDE_INT to poly_int64.
maxsize in gimple_fold_builtin_memory_op goes from HOST_WIDE_INT
to poly_uint64 (rather than poly_int) to match the previous use
of tree_fits_uhwi_p.
2017-12-20 Richard Sandiford <richard.sandiford@linaro.org>
Alan Hayward <alan.hayward@arm.com>
David Sherwood <david.sherwood@arm.com>
gcc/
* tree-dfa.h (get_addr_base_and_unit_offset_1): Return the offset
as a poly_int64_pod rather than a HOST_WIDE_INT.
(get_addr_base_and_unit_offset): Likewise.
* tree-dfa.c (get_addr_base_and_unit_offset_1): Likewise.
(get_addr_base_and_unit_offset): Likewise.
* doc/match-and-simplify.texi: Change off from HOST_WIDE_INT
to poly_int64 in example.
* fold-const.c (fold_binary_loc): Update call to
get_addr_base_and_unit_offset.
* gimple-fold.c (gimple_fold_builtin_memory_op): Likewise.
(maybe_canonicalize_mem_ref_addr): Likewise.
(gimple_fold_stmt_to_constant_1): Likewise.
* gimple-ssa-warn-restrict.c (builtin_memref::builtin_memref):
Likewise.
* ipa-param-manipulation.c (ipa_modify_call_arguments): Likewise.
* match.pd: Likewise.
* omp-low.c (lower_omp_target): Likewise.
* tree-sra.c (build_ref_for_offset): Likewise.
(build_debug_ref_for_model): Likewise.
* tree-ssa-address.c (maybe_fold_tmr): Likewise.
* tree-ssa-alias.c (ao_ref_init_from_ptr_and_size): Likewise.
* tree-ssa-ccp.c (optimize_memcpy): Likewise.
* tree-ssa-forwprop.c (forward_propagate_addr_expr_1): Likewise.
(constant_pointer_difference): Likewise.
* tree-ssa-loop-niter.c (expand_simple_operations): Likewise.
* tree-ssa-phiopt.c (jump_function_from_stmt): Likewise.
* tree-ssa-pre.c (create_component_ref_by_pieces_1): Likewise.
* tree-ssa-sccvn.c (vn_reference_fold_indirect): Likewise.
(vn_reference_maybe_forwprop_address, vn_reference_lookup_3): Likewise.
(set_ssa_val_to): Likewise.
* tree-ssa-strlen.c (get_addr_stridx, addr_stridxptr)
(maybe_diag_stxncpy_trunc): Likewise.
* tree-vrp.c (vrp_prop::check_array_ref): Likewise.
* tree.c (build_simple_mem_ref_loc): Likewise.
(array_at_struct_end_p): Likewise.
Co-Authored-By: Alan Hayward <alan.hayward@arm.com>
Co-Authored-By: David Sherwood <david.sherwood@arm.com>
From-SVN: r255887
|
|
of a local struct)
PR tree-optimization/83444
* tree-ssa-strlen.c (strlen_check_and_optimize_stmt): For the
character load case, if get_stridx on MEM_REF's operand doesn't
look usable, retry with get_addr_stridx.
* gcc.dg/strlenopt-38.c: New test.
From-SVN: r255835
|
|
of a local struct)
PR tree-optimization/83444
* tree-ssa-strlen.c (strlen_check_and_optimize_stmt): Optimize
character loads.
* gcc.dg/strlenopt-38.c: New test.
From-SVN: r255806
|
|
PR middle-end/83373 - False positive reported by -Wstringop-overflow
PR tree-optimization/78450 - strlen(s) return value can be assumed to be less than the size of s
gcc/ChangeLog:
PR middle-end/83373
PR tree-optimization/78450
* tree-ssa-strlen.c (maybe_set_strlen_range): New function.
(handle_builtin_strlen): Call it.
gcc/testsuite/ChangeLog:
PR middle-end/83373
PR tree-optimization/78450
* gcc.dg/pr83373.c: New test.
* gcc.dg/strlenopt-36.c: New test.
* gcc.dg/strlenopt-37.c: New test.
From-SVN: r255790
|
|
gcc/c-family/ChangeLog:
PR tree-optimization/78918
* c-common.c (check_function_restrict): Avoid checking built-ins.
* c.opt (-Wrestrict): Include in -Wall.
gcc/ChangeLog:
PR tree-optimization/78918
* Makefile.in (OBJS): Add gimple-ssa-warn-restrict.o.
* builtins.c (check_sizes): Rename...
(check_access): ...to this. Rename function arguments for clarity.
(check_memop_sizes): Adjust names.
(expand_builtin_memchr, expand_builtin_memcpy): Same.
(expand_builtin_memmove, expand_builtin_mempcpy): Same.
(expand_builtin_strcat, expand_builtin_stpncpy): Same.
(check_strncat_sizes, expand_builtin_strncat): Same.
(expand_builtin_strncpy, expand_builtin_memset): Same.
(expand_builtin_bzero, expand_builtin_memcmp): Same.
(expand_builtin_memory_chk, maybe_emit_chk_warning): Same.
(maybe_emit_sprintf_chk_warning): Same.
(expand_builtin_strcpy): Adjust.
(expand_builtin_stpcpy): Same.
(expand_builtin_with_bounds): Detect out-of-bounds accesses
in pointer-checking forms of memcpy, memmove, and mempcpy.
(gcall_to_tree_minimal, max_object_size): Define new functions.
* builtins.h (max_object_size): Declare.
* calls.c (alloc_max_size): Call max_object_size instead of
hardcoding ssizetype limit.
(get_size_range): Handle new argument.
* calls.h (get_size_range): Add a new argument.
* cfgexpand.c (expand_call_stmt): Propagate no-warning bit.
* doc/invoke.texi (-Wrestrict): Adjust, add example.
* gimple-fold.c (gimple_fold_builtin_memory_op): Detect overlapping
operations.
(gimple_fold_builtin_memory_chk): Same.
(gimple_fold_builtin_stxcpy_chk): New function.
* gimple-ssa-warn-restrict.c: New source.
* gimple-ssa-warn-restrict.h: New header.
* gimple.c (gimple_build_call_from_tree): Propagate location.
* passes.def (pass_warn_restrict): Add new pass.
* tree-pass.h (make_pass_warn_restrict): Declare.
* tree-ssa-strlen.c (handle_builtin_strcpy): Detect overlapping
operations.
(handle_builtin_strcat): Same.
(strlen_optimize_stmt): Rename...
(strlen_check_and_optimize_stmt): ...to this. Handle strncat,
stpncpy, strncpy, and their checking forms.
gcc/testsuite/ChangeLog:
PR tree-optimization/78918
* c-c++-common/Warray-bounds.c: New test.
* c-c++-common/Warray-bounds-2.c: New test.
* c-c++-common/Warray-bounds-3.c: New test.
* c-c++-common/Warray-bounds-4.c: New test.
* c-c++-common/Warray-bounds-5.c: New test.
* c-c++-common/Wrestrict-2.c: New test.
* c-c++-common/Wrestrict.c: New test.
* c-c++-common/Wrestrict.s: New test.
* c-c++-common/Wsizeof-pointer-memaccess1.c: Adjust
* c-c++-common/Wsizeof-pointer-memaccess2.c: Same.
* g++.dg/torture/Wsizeof-pointer-memaccess1.C: Same.
* g++.dg/torture/Wsizeof-pointer-memaccess2.C: Same.
* gcc.dg/range.h: New header.
* gcc.dg/memcpy-6.c: New test.
* gcc.dg/pr69172.c: Adjust.
* gcc.dg/pr79223.c: Same.
* gcc.dg/pr81345.c: Adjust.
* gcc.dg/Wobjsize-1.c: Same.
* gcc.dg/Wrestrict-2.c: New test.
* gcc.dg/Wrestrict.c: New test.
* gcc.dg/Wsizeof-pointer-memaccess1.c: Adjust.
* gcc.dg/builtin-stpncpy.c: Same.
* gcc.dg/builtin-stringop-chk-1.c: Same.
* gcc.target/i386/chkp-stropt-17.c: New test.
* gcc.dg/torture/Wsizeof-pointer-memaccess1.c: Adjust.
From-SVN: r255755
|
|
gcc/ChangeLog:
PR tree-optimization/83075
* tree-ssa-strlen.c (handle_builtin_stxncpy): Avoid assuming
strncat/strncpy don't change length of source string.
gcc/testsuite/ChangeLog:
PR tree-optimization/83075
* gcc.dg/tree-ssa/strncat.c: New test.
* gcc.dg/tree-ssa/strncpy-2.c: Same.
From-SVN: r255446
|
|
functions that expect string arguments
gcc/ChangeLog:
PR tree-optimization/82945
* builtins.c (expand_builtin_strlen): Call maybe_warn_nonstring_arg.
* calls.h (maybe_warn_nonstring_arg): Declare new function.
* calls.c (get_attr_nonstring_decl, maybe_warn_nonstring_arg): New
functions.
(initialize_argument_information): Call maybe_warn_nonstring_arg.
* calls.h (get_attr_nonstring_decl): Declare new function.
* doc/extend.texi (attribute nonstring): Update.
* gimple-fold.c (gimple_fold_builtin_strncpy): Call
get_attr_nonstring_decl and handle it.
* tree-ssa-strlen.c (maybe_diag_stxncpy_trunc): Same. Improve
detection of nul-termination.
(strlen_to_stridx): Change to a pointer.
(handle_builtin_strlen, handle_builtin_stxncpy): Adjust.
(pass_strlen::execute): Same.
gcc/testsuite/ChangeLog:
PR tree-optimization/82945
* c-c++-common/Wstringop-truncation-2.c: New test.
* c-c++-common/Wstringop-truncation.c: Adjust.
* c-c++-common/attr-nonstring-2.c: Adjust.
* c-c++-common/attr-nonstring-3.c: New test.
From-SVN: r255031
|
|
strlen_optimize_stmt .././../gcc/tree-ssa-strlen.c:2971)
PR tree-optimization/82977
* tree-ssa-strlen.c (strlen_optimize_stmt): Pass a reference to a copy
constructed temporary to strlen_to_stridx.put.
From-SVN: r254757
|
|
gcc/ChangeLog:
PR c/81117
* builtins.c (compute_objsize): Handle arrays that
compute_builtin_object_size likes to fail for. Make extern.
* builtins.h (compute_objsize): Declare.
(check_strncpy_sizes): New function.
(expand_builtin_strncpy): Call check_strncpy_sizes.
* gimple-fold.c (gimple_fold_builtin_strncpy): Implement
-Wstringop-truncation.
(gimple_fold_builtin_strncat): Same.
* gimple.c (gimple_build_call_from_tree): Set call location.
* tree-ssa-strlen.c (strlen_to_stridx): New global variable.
(maybe_diag_bound_equal_length, is_strlen_related_p): New functions.
(handle_builtin_stxncpy, handle_builtin_strncat): Same.
(handle_builtin_strlen): Use strlen_to_stridx.
(strlen_optimize_stmt): Handle flavors of strncat, strncpy, and
stpncpy.
Use strlen_to_stridx.
(pass_strlen::execute): Release strlen_to_stridx.
* doc/invoke.texi (-Wsizeof-pointer-memaccess): Document enhancement.
(-Wstringop-truncation): Document new option.
gcc/ada/ChangeLog:
PR c/81117
* ada/adadecode.c (__gnat_decode): Use memcpy instead of strncpy.
* ada/argv.c (__gnat_fill_arg, __gnat_fill_env): Same.
gcc/c-family/ChangeLog:
PR c/81117
* c-common.c (catenate_strings): Use memcpy instead of strncpy.
* c-warn.c (sizeof_pointer_memaccess_warning): Handle arrays.
* c.opt (-Wstringop-truncation): New option.
gcc/fortran/ChangeLog:
PR c/81117
* gcc/fortran/decl.c (build_sym): Use strcpy instead of strncpy.
gcc/objc/ChangeLog:
PR c/81117
* objc-encoding.c (encode_type): Use memcpy instead of strncpy.
gcc/testsuite/ChangeLog:
PR c/81117
* c-c++-common/Wsizeof-pointer-memaccess3.c: New test.
* c-c++-common/Wstringop-overflow.c: Same.
* c-c++-common/Wstringop-truncation.c: Same.
* c-c++-common/Wsizeof-pointer-memaccess2.c: Adjust.
* c-c++-common/attr-nonstring-2.c: New test.
* g++.dg/torture/Wsizeof-pointer-memaccess1.C: Adjust.
* g++.dg/torture/Wsizeof-pointer-memaccess2.C: Same.
* gcc.dg/torture/pr63554.c: Same.
* gcc.dg/Walloca-1.c: Disable macro tracking.
From-SVN: r254630
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2017-09-12 Richard Sandiford <richard.sandiford@linaro.org>
Alan Hayward <alan.hayward@arm.com>
David Sherwood <david.sherwood@arm.com>
gcc/
* defaults.h (SLOW_UNALIGNED_ACCESS): Delete.
* target.def (slow_unaligned_access): New hook.
* targhooks.h (default_slow_unaligned_access): Declare.
* targhooks.c (default_slow_unaligned_access): New function.
* doc/tm.texi.in (SLOW_UNALIGNED_ACCESS): Replace with...
(TARGET_SLOW_UNALIGNED_ACCESS): ...this.
* doc/tm.texi: Regenerate.
* config/alpha/alpha.h (SLOW_UNALIGNED_ACCESS): Delete.
* config/arm/arm.h (SLOW_UNALIGNED_ACCESS): Delete.
* config/i386/i386.h (SLOW_UNALIGNED_ACCESS): Delete commented-out
definition.
* config/powerpcspe/powerpcspe.h (SLOW_UNALIGNED_ACCESS): Delete.
* config/powerpcspe/powerpcspe.c (TARGET_SLOW_UNALIGNED_ACCESS):
Redefine.
(rs6000_slow_unaligned_access): New function.
(rs6000_emit_move): Use it instead of SLOW_UNALIGNED_ACCESS.
(expand_block_compare): Likewise.
(expand_strn_compare): Likewise.
(rs6000_rtx_costs): Likewise.
* config/riscv/riscv.h (SLOW_UNALIGNED_ACCESS): Delete.
(riscv_slow_unaligned_access): Likewise.
* config/riscv/riscv.c (riscv_slow_unaligned_access): Rename to...
(riscv_slow_unaligned_access_p): ...this and make static.
(riscv_option_override): Update accordingly.
(riscv_slow_unaligned_access): New function.
(TARGET_SLOW_UNALIGNED_ACCESS): Redefine.
* config/rs6000/rs6000.h (SLOW_UNALIGNED_ACCESS): Delete.
* config/rs6000/rs6000.c (TARGET_SLOW_UNALIGNED_ACCESS): Redefine.
(rs6000_slow_unaligned_access): New function.
(rs6000_emit_move): Use it instead of SLOW_UNALIGNED_ACCESS.
(rs6000_rtx_costs): Likewise.
* config/rs6000/rs6000-string.c (expand_block_compare)
(expand_strn_compare): Use targetm.slow_unaligned_access instead
of SLOW_UNALIGNED_ACCESS.
* config/tilegx/tilegx.h (SLOW_UNALIGNED_ACCESS): Delete.
* config/tilepro/tilepro.h (SLOW_UNALIGNED_ACCESS): Delete.
* calls.c (expand_call): Use targetm.slow_unaligned_access instead
of SLOW_UNALIGNED_ACCESS.
* expmed.c (simple_mem_bitfield_p): Likewise.
* expr.c (alignment_for_piecewise_move): Likewise.
(emit_group_load_1): Likewise.
(emit_group_store): Likewise.
(copy_blkmode_from_reg): Likewise.
(emit_push_insn): Likewise.
(expand_assignment): Likewise.
(store_field): Likewise.
(expand_expr_real_1): Likewise.
* gimple-fold.c (gimple_fold_builtin_memory_op): Likewise.
* lra-constraints.c (simplify_operand_subreg): Likewise.
* stor-layout.c (bit_field_mode_iterator::next_mode): Likewise.
* gimple-ssa-store-merging.c: Likewise in block comment at start
of file.
* tree-ssa-strlen.c: Include target.h.
(handle_builtin_memcmp): Use targetm.slow_unaligned_access instead
of SLOW_UNALIGNED_ACCESS.
* system.h (SLOW_UNALIGNED_ACCESS): Poison.
Co-Authored-By: Alan Hayward <alan.hayward@arm.com>
Co-Authored-By: David Sherwood <david.sherwood@arm.com>
From-SVN: r252009
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This patch adds a wrapper around mode_for_size for cases in which
the mode class is MODE_INT (the commonest case). The return type
can then be an opt_scalar_int_mode instead of a machine_mode.
2017-08-30 Richard Sandiford <richard.sandiford@linaro.org>
Alan Hayward <alan.hayward@arm.com>
David Sherwood <david.sherwood@arm.com>
gcc/
* machmode.h (int_mode_for_size): New function.
* builtins.c (set_builtin_user_assembler_name): Use int_mode_for_size
instead of mode_for_size.
* calls.c (save_fixed_argument_area): Likewise. Make use of BLKmode
explicit.
* combine.c (expand_field_assignment): Use int_mode_for_size
instead of mode_for_size.
(make_extraction): Likewise.
(simplify_shift_const_1): Likewise.
(simplify_comparison): Likewise.
* dojump.c (do_jump): Likewise.
* dwarf2out.c (mem_loc_descriptor): Likewise.
* emit-rtl.c (init_derived_machine_modes): Likewise.
* expmed.c (flip_storage_order): Likewise.
(convert_extracted_bit_field): Likewise.
* expr.c (copy_blkmode_from_reg): Likewise.
* graphite-isl-ast-to-gimple.c (max_mode_int_precision): Likewise.
* internal-fn.c (expand_mul_overflow): Likewise.
* lower-subreg.c (simple_move): Likewise.
* optabs-libfuncs.c (init_optabs): Likewise.
* simplify-rtx.c (simplify_unary_operation_1): Likewise.
* tree.c (vector_type_mode): Likewise.
* tree-ssa-strlen.c (handle_builtin_memcmp): Likewise.
* tree-vect-data-refs.c (vect_lanes_optab_supported_p): Likewise.
* tree-vect-generic.c (expand_vector_parallel): Likewise.
* tree-vect-stmts.c (vectorizable_load): Likewise.
(vectorizable_store): Likewise.
gcc/ada/
* gcc-interface/decl.c (gnat_to_gnu_entity): Use int_mode_for_size
instead of mode_for_size.
(gnat_to_gnu_subprog_type): Likewise.
* gcc-interface/utils.c (make_type_from_size): Likewise.
Co-Authored-By: Alan Hayward <alan.hayward@arm.com>
Co-Authored-By: David Sherwood <david.sherwood@arm.com>
From-SVN: r251469
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r249880 installed the result of a strlen in a strinfo if the strinfo
wasn't previously a full string. But as Jakub says in the PR comments,
we can't just do that in isolation, because there are no vdefs on the
call that would invalidate any related strinfos.
This patch updates the related strinfos if the adjustment is simple and
invalidates them otherwise. As elsewhere, we treat adjustments of the
form strlen +/- INTEGER_CST as simple but anything else as too complex.
2017-07-04 Richard Sandiford <richard.sandiford@linaro.org>
gcc/
PR tree-optimization/81292
* tree-ssa-strlen.c (handle_builtin_strlen): When setting
full_string_p, also call adjust_related_strinfos if the adjustment
is simple, otherwise invalidate related strinfos.
gcc/testsuite/
PR tree-optimization/81292
* gcc.dg/pr81292-1.c: New test.
* gcc.dg/pr81292-2.c: Likewise.
From-SVN: r249961
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tree-ssa-strlen.c looks for cases in which a string is built up using
operations like:
memcpy (a, "foo", 4);
memcpy (a + 3, "bar", 4);
int x = strlen (a);
As a side-effect, it optimises the non-final memcpys so that they don't
include the nul terminator.
However, after removing some "& ~0x1"s from tree-ssa-dse.c, the DSE pass
does this optimisation itself (because it can tell that later memcpys
overwrite the terminators). The strlen pass wasn't able to handle these
pre-optimised calls in the same way as the unoptimised ones.
This patch adds support for tracking unterminated strings.
[Based on the code ARM contributed in branches/ARM/sve-branch@246236]
2017-07-02 Richard Sandiford <richard.sandiford@linaro.org>
gcc/
* tree-ssa-strlen.c (strinfo): Rename the length field to
nonzero_chars. Add a full_string_p field.
(compare_nonzero_chars, zero_length_string_p): New functions.
(get_addr_stridx): Add an offset_out parameter.
Use compare_nonzero_chars.
(get_stridx): Update accordingly. Use compare_nonzero_chars.
(new_strinfo): Update after above changes to strinfo.
(set_endptr_and_length): Set full_string_p.
(get_string_length): Update after above changes to strinfo.
(unshare_strinfo): Update call to new_strinfo.
(maybe_invalidate): Likewise.
(get_stridx_plus_constant): Change off to unsigned HOST_WIDE_INT.
Use compare_nonzero_chars and zero_string_p. Treat nonzero_chars
as a uhwi instead of an shwi. Update after above changes to
strinfo and new_strinfo.
(zero_length_string): Assert that chainsi contains full strings.
Use zero_length_string_p. Update call to new_strinfo.
(adjust_related_strinfos): Update after above changes to strinfo.
Copy full_string_p from origsi.
(adjust_last_stmt): Use zero_length_string_p.
(handle_builtin_strlen): Update after above changes to strinfo and
new_strinfo. Install the lhs as the string length if the previous
entry didn't describe a full string.
(handle_builtin_strchr): Update after above changes to strinfo
and new_strinfo.
(handle_builtin_strcpy): Likewise.
(handle_builtin_strcat): Likewise.
(handle_builtin_malloc): Likewise.
(handle_pointer_plus): Likewise.
(handle_builtin_memcpy): Likewise. Track nonzero characters
that aren't necessarily followed by a nul terminator.
(handle_char_store): Likewise.
gcc/testsuite/
* gcc.dg/strlenopt-32.c: New testcase.
* gcc.dg/strlenopt-33.c: Likewise.
* gcc.dg/strlenopt-33g.c: Likewise.
* gcc.dg/strlenopt-34.c: Likewise.
* gcc.dg/strlenopt-35.c: Likewise.
From-SVN: r249880
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In this testcase, we (correctly) record after:
strcpy (p1, "abcde");
char *p2 = strchr (p1, '\0');
strcpy (p2, q);
that the length of p1 and p2 can be calculated by converting the
second strcpy to:
tmp = stpcpy (p2, q)
and then doing tmp - p1 for p1 and tmp - p2 for p2. This is delayed
until we know whether we actually need it. Then:
char *p3 = strchr (p2, '\0');
forces us to calculate the length of p2 in this way. At this point
we had three related strinfos:
p1: delayed length, calculated from tmp = stpcpy (p2, q)
p2: known length, tmp - p2
p3: known length, 0
After:
memcpy (p3, "x", 2);
we use adjust_related_strinfos to add 1 to each length. However,
that didn't do anything for delayed lengths because:
else if (si->stmt != NULL)
/* Delayed length computation is unaffected. */
;
So after the memcpy we had:
p1: delayed length, calculated from tmp = stpcpy (p2, q)
p2: known length, tmp - p2 + 1
p3: known length, 1
where the length of p1 was no longer correct.
2017-05-16 Richard Sandiford <richard.sandiford@linaro.org>
gcc/
PR tree-optimization/80769
* tree-ssa-strlen.c (strinfo): Document that "stmt" is also used
for malloc and calloc. Document the new invariant that all related
strinfos have delayed lengths or none do.
(verify_related_strinfos): Move earlier in file.
(set_endptr_and_length): New function, split out from...
(get_string_length): ...here. Also set the lengths of related
strinfos.
(zero_length_string): Assert that chainsi has known (rather than
delayed) lengths.
(adjust_related_strinfos): Likewise.
gcc/testsuite/
PR tree-optimization/80769
* gcc.dg/strlenopt-31.c: New test.
* gcc.dg/strlenopt-31g.c: Likewise.
From-SVN: r249879
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This patch just adds a helper function for getting the next strinfo
in a chain, since part 2 adds another place where we do that.
2017-05-16 Richard Sandiford <richard.sandiford@linaro.org>
gcc/
* tree-ssa-strlen.c (get_next_strinfo): New function.
(get_stridx_plus_constant): Use it.
(zero_length_string): Likewise.
(adjust_related_strinfos): Likewise.
(adjust_last_stmt): Likewise.
From-SVN: r248732
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2017-01-23 Martin Liska <mliska@suse.cz>
PR tree-optimization/79196
* tree-ssa-strlen.c (fold_strstr_to_memcmp): Rename to ...
(fold_strstr_to_strncmp): ... this. Fold the pattern to strncmp
instead of memcmp.
(strlen_optimize_stmt): Call the renamed function.
2017-01-23 Martin Liska <mliska@suse.cz>
PR tree-optimization/79196
* gcc.dg/asan/pr79196.c: New test.
* gcc.dg/strlenopt-30.c: Update scanned pattern.
From-SVN: r244812
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From-SVN: r243994
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PR tree-optimization/78886
* gcc.dg/tree-ssa/pr78886.c: New test.
PR tree-optimization/78886
* tree-ssa-strlen.c (handle_builtin_malloc): Return when LHS
is equal to NULL.
From-SVN: r243886
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2016-12-14 Prathamesh Kulkarni <prathamesh.kulkarni@linaro.org>
Jakub Jelinek <jakub@redhat.com>
* tree-ssa-strlen.c (fold_strstr_to_memcmp): New function.
(strlen_optimize_stmt): Call fold_strstr_to_memcmp.
testsuite/
* gcc.dg/strlenopt-30.c: New test-case.
Co-Authored-By: Jakub Jelinek <jakub@redhat.com>
From-SVN: r243633
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* hwint.h (least_bit_hwi, pow2_or_zerop, pow2p_hwi, ctz_or_zero):
New.
* hwint.c (exact_log2): Use pow2p_hwi.
(ctz_hwi, ffs_hwi): Use least_bit_hwi.
* alias.c (memrefs_conflict_p): Use pow2_or_zerop.
* builtins.c (get_object_alignment_2, get_object_alignment)
(get_pointer_alignment, fold_builtin_atomic_always_lock_free): Use
least_bit_hwi.
* calls.c (compute_argument_addresses, store_one_arg): Use
least_bit_hwi.
* cfgexpand.c (expand_one_stack_var_at): Use least_bit_hwi.
* combine.c (force_to_mode): Use least_bit_hwi.
* emit-rtl.c (set_mem_attributes_minus_bitpos, adjust_address_1):
Use least_bit_hwi.
* expmed.c (synth_mult, expand_divmod): Use ctz_or_zero, ctz_hwi.
(init_expmed_one_conv): Use pow2p_hwi.
* fold-const.c (round_up_loc, round_down_loc): Use pow2_or_zerop.
(fold_binary_loc): Use pow2p_hwi.
* function.c (assign_parm_find_stack_rtl): Use least_bit_hwi.
* gimple-fold.c (gimple_fold_builtin_memory_op): Use pow2p_hwi.
* gimple-ssa-strength-reduction.c (replace_ref): Use least_bit_hwi.
* hsa-gen.c (gen_hsa_addr_with_align, hsa_bitmemref_alignment):
Use least_bit_hwi.
* ipa-cp.c (ipcp_alignment_lattice::meet_with_1): Use least_bit_hwi.
* ipa-prop.c (ipa_modify_call_arguments): Use least_bit_hwi.
* omp-low.c (oacc_loop_fixed_partitions)
(oacc_loop_auto_partitions): Use least_bit_hwi.
* rtlanal.c (nonzero_bits1): Use ctz_or_zero.
* stor-layout.c (place_field): Use least_bit_hwi.
* tree-pretty-print.c (dump_generic_node): Use pow2p_hwi.
* tree-sra.c (build_ref_for_offset): Use least_bit_hwi.
* tree-ssa-ccp.c (ccp_finalize): Use least_bit_hwi.
* tree-ssa-math-opts.c (bswap_replace): Use least_bit_hwi.
* tree-ssa-strlen.c (handle_builtin_memcmp): Use pow2p_hwi.
* tree-vect-data-refs.c (vect_analyze_group_access_1)
(vect_grouped_store_supported, vect_grouped_load_supported)
(vect_permute_load_chain, vect_shift_permute_load_chain)
(vect_transform_grouped_load): Use pow2p_hwi.
* tree-vect-generic.c (expand_vector_divmod): Use ctz_or_zero.
* tree-vect-patterns.c (vect_recog_divmod_pattern): Use ctz_or_zero.
* tree-vect-stmts.c (vectorizable_mask_load_store): Use
least_bit_hwi.
* tsan.c (instrument_expr): Use least_bit_hwi.
* var-tracking.c (negative_power_of_two_p): Use pow2_or_zerop.
From-SVN: r240194
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2016-07-21 Prathamesh Kulkarni <prathamesh.kulkarni@linaro.org>
* tree-ssa-strlen.c (strlen_dom_walker::before_dom_children): Fix typo
in comment.
From-SVN: r238588
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PR tree-optimization/71707
* tree-ssa-strlen.c (get_stridx_plus_constant): Handle already present
strinfo even for ADDR_EXPR ptr.
* gcc.dg/strlenopt-29.c: New test.
From-SVN: r237889
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array initialization style)
PR tree-optimization/71625
* tree-ssa-strlen.c (get_addr_stridx): Add PTR argument. Assume list
is sorted by ascending list->offset. If PTR is non-NULL and there is
previous strinfo, call get_stridx_plus_constant.
(get_stridx): Pass exp as second argument to get_addr_stridx.
(addr_stridxptr): Add missing list = list->next, so that there can be
more than one entries in the list. Bump limit from 16 to 32. Ensure
the list is sorted by ascending list->offset.
(get_stridx_plus_constant): Adjust so that it can be also called with
ADDR_EXPR instead of SSA_NAME as PTR.
(handle_char_store): Pass NULL_TREE as second argument to
get_addr_stridx.
* gcc.dg/strlenopt-28.c: New test.
From-SVN: r237841
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x86_64-linux-gnu: in execute_todo, at passes.c:2009)
PR tree-optimization/71588
* tree-ssa-strlen.c (valid_builtin_call): New function.
(adjust_last_stmt, handle_builtin_memset, strlen_optimize_stmt): Use
it.
* gcc.dg/pr71558.c: New test.
From-SVN: r237628
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