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re PR c/7652 (-Wswitch-break : Warn if a switch case falls through) 

PR c/7652
gcc/
	* alias.c (find_base_value): Adjust fall through comment.
	* cfgexpand.c (expand_debug_expr): Likewise.
	* combine.c (find_split_point): Likewise.
	(expand_compound_operation): Likewise.  Add FALLTHRU.
	(make_compound_operation): Adjust fall through comment.
	(canon_reg_for_combine): Add FALLTHRU.
	(force_to_mode): Adjust fall through comment.
	(simplify_shift_const_1): Likewise.
	(simplify_comparison): Likewise.
	* config/aarch64/aarch64-builtins.c (aarch64_simd_expand_args): Add
	FALLTHRU.
	* config/aarch64/predicates.md: Likewise.
	* config/i386/i386.c (function_arg_advance_32): Likewise.
	(ix86_gimplify_va_arg): Likewise.
	(print_reg): Likewise.
	(ix86_print_operand): Likewise.
	(ix86_build_const_vector): Likewise.
	(ix86_expand_branch): Likewise.
	(ix86_sched_init_global): Adjust fall through comment.
	(ix86_expand_args_builtin): Add FALLTHRU.
	(ix86_expand_builtin): Likewise.
	(ix86_expand_vector_init_one_var): Likewise.
	* config/rs6000/rs6000.c (rs6000_emit_vector_compare_inner): Likewise.
	(rs6000_adjust_cost): Likewise.
	(insn_must_be_first_in_group): Likewise.
	* config/rs6000/rs6000.md: Likewise.  Adjust fall through comment.
	* dbxout.c (dbxout_symbol): Adjust fall through comment.
	* df-scan.c (df_uses_record): Likewise.
	* dojump.c (do_jump): Add FALLTHRU.
	* dwarf2out.c (mem_loc_descriptor): Likewise.  Adjust fall through
	comment.
	(resolve_args_picking_1): Adjust fall through comment.
	(loc_list_from_tree_1): Likewise.
	* expmed.c (make_tree): Likewise.
	* expr.c (expand_expr_real_2): Add FALLTHRU.
	(expand_expr_real_1): Likewise.  Adjust fall through comment.
	* fold-const.c (const_binop): Adjust fall through comment.
	(fold_truth_not_expr): Likewise.
	(fold_cond_expr_with_comparison): Add FALLTHRU.
	(fold_binary_loc): Likewise.
	(contains_label_1): Adjust fall through comment.
	(multiple_of_p): Likewise.
	* gcov-tool.c (process_args): Add FALLTHRU.
	* genattrtab.c (check_attr_test): Likewise.
	(write_test_expr): Likewise.
	* genconfig.c (walk_insn_part): Likewise.
	* genpreds.c (validate_exp): Adjust fall through comment.
	(needs_variable): Likewise.
	* gensupport.c (get_alternatives_number): Add FALLTHRU.
	(subst_dup): Likewise.
	* gimple-pretty-print.c (dump_gimple_assign): Likewise.
	* gimplify.c (gimplify_addr_expr): Adjust fall through comment.
	(gimplify_scan_omp_clauses): Add FALLTHRU.
	(goa_stabilize_expr): Likewise.
	* graphite-isl-ast-to-gimple.c (substitute_ssa_name): Adjust fall
	through comment.
	* hsa-gen.c (get_address_from_value): Likewise.
	* ipa-icf.c (sem_function::hash_stmt): Likewise.
	* ira.c (ira_setup_alts): Add FALLTHRU.
	* lra-eliminations.c (lra_eliminate_regs_1): Adjust fall through
	comment.
	* lto-streamer-out.c (lto_output_tree_ref): Add FALLTHRU.
	* opts.c (common_handle_option): Likewise.
	* read-rtl.c (read_rtx_code): Likewise.
	* real.c (round_for_format): Likewise.
	* recog.c (asm_operand_ok): Likewise.
	* reginfo.c (reg_scan_mark_refs): Adjust fall through comment.
	* reload1.c (set_label_offsets): Likewise.
	(eliminate_regs_1): Likewise.
	(reload_reg_reaches_end_p): Likewise.
	* rtlanal.c (commutative_operand_precedence): Add FALLTHRU.
	(rtx_cost): Likewise.
	* sched-rgn.c (is_exception_free): Likewise.
	* simplify-rtx.c (simplify_rtx): Adjust fall through comment.
	* stor-layout.c (int_mode_for_mode): Likewise.
	* toplev.c (print_to_asm_out_file): Likewise.
	(print_to_stderr): Likewise.
	* tree-cfg.c (gimple_verify_flow_info): Likewise.
	* tree-chrec.c (chrec_fold_plus_1): Add FALLTHRU.
	(chrec_fold_multiply): Likewise.
	(evolution_function_is_invariant_rec_p): Likewise.
	(for_each_scev_op): Likewise.
	* tree-data-ref.c (siv_subscript_p): Likewise.
	(get_references_in_stmt): Likewise.
	* tree.c (find_placeholder_in_expr): Adjust fall through comment.
	(substitute_in_expr): Likewise.
	(type_cache_hasher::equal): Likewise.
	(walk_type_fields): Likewise.
	* var-tracking.c (adjust_mems): Add FALLTHRU.
	(set_dv_changed): Adjust fall through comment.
	* varasm.c (default_function_section): Add FALLTHRU.
gcc/c-family/
	* c-common.c (scalar_to_vector): Adjust fall through comment.
	* c-opts.c (c_common_handle_option): Likewise.
	* c-pragma.c (handle_pragma_pack): Add FALLTHRU.
	* c-pretty-print.c (c_pretty_printer::postfix_expression): Adjust
	fall through comment.
	* cilk.c (extract_free_variables): Add FALLTHRU.
gcc/c/
	* c-parser.c (c_parser_external_declaration): Add FALLTHRU.
	(c_parser_postfix_expression): Likewise.
	* c-typeck.c (build_unary_op): Adjust fall through comment.
	(c_mark_addressable): Likewise.
gcc/cp/
	* call.c (add_builtin_candidate): Add FALLTHRU.
	(build_integral_nontype_arg_conv): Adjust fall through comment.
	(build_new_op_1): Add FALLTHRU.
	(convert_like_real): Adjust fall through comment.
	* class.c (fixed_type_or_null): Likewise.
	* constexpr.c (cxx_eval_constant_expression): Likewise.
	(potential_constant_expression_1): Likewise.  Add FALLTHRU.
	* cp-gimplify.c (cp_gimplify_expr): Adjust fall through comment.
	(cp_fold): Add FALLTHRU.
	* cvt.c (build_expr_type_conversion): Adjust fall through comment.
	* cxx-pretty-print.c (pp_cxx_unqualified_id): Add FALLTHRU.
	(pp_cxx_qualified_id): Likewise.
	(cxx_pretty_printer::constant): Adjust fall through comment.
	(cxx_pretty_printer::primary_expression): Add FALLTHRU.
	(pp_cxx_pm_expression): Adjust fall through comment.
	(cxx_pretty_printer::expression): Add FALLTHRU.
	(cxx_pretty_printer::declaration_specifiers): Reformat code.
	(pp_cxx_type_specifier_seq): Adjust fall through comment.
	(pp_cxx_ptr_operator): Likewise.  Add FALLTHRU.
	* error.c (dump_type): Adjust fall through comment.
	(dump_decl): Likewise.
	* mangle.c (write_type): Likewise.
	* method.c (synthesized_method_walk): Add FALLTHRU.
	* name-lookup.c (arg_assoc_type): Likewise.
	* parser.c (cp_lexer_print_token): Adjust fall through comment.
	(cp_parser_primary_expression): Add FALLTHRU.
	(cp_parser_operator): Likewise.
	* pt.c (find_parameter_packs_r): Likewise.
	(tsubst_aggr_type): Adjust fall through comment.
	* semantics.c (finish_omp_clauses): Add FALLTHRU.
	* tree.c (lvalue_kind): Likewise.
gcc/fortran/
	* decl.c (match_attr_spec): Add FALLTHRU.
	* primary.c (match_arg_list_function): Likewise.
	* resolve.c (resolve_operator): Adjust fall through comment.
	(fixup_charlen): Add FALLTHRU.
	(resolve_allocate_expr): Adjust fall through comment.
	* trans-array.c (gfc_conv_ss_startstride): Add FALLTHRU.
	* trans-intrinsic.c (gfc_conv_intrinsic_len): Adjust fall through
	comment.
gcc/java/
	* expr.c (java_truthvalue_conversion): Adjust fall through comment.
	* jcf-io.c (verify_constant_pool): Likewise.
	* typeck.c (promote_type): Likewise.
gcc/objc/
	* objc-encoding.c (encode_type): Add FALLTHRU.
libcpp/
	* lex.c (search_line_fast): Add FALLTHRU.
	(_cpp_lex_direct): Likewise.
	(cpp_token_val_index): Adjust fall through comment.
	* macro.c (parse_params): Add FALLTHRU.
	* pch.c (count_defs): Adjust fall through comment.
	(write_defs): Likewise.
libiberty/
	* cp-demangle.c (d_print_mod): Add FALLTHRU.

From-SVN: r239410
This commit is contained in:
Marek Polacek 2016-08-12 10:30:47 +00:00 committed by Marek Polacek
parent 0c44e080f5
commit 191816a36b
88 changed files with 387 additions and 88 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

95
gcc/ChangeLog
View File

@ -1,3 +1,98 @@
2016-08-12 Marek Polacek <polacek@redhat.com>
PR c/7652
* alias.c (find_base_value): Adjust fall through comment.
* cfgexpand.c (expand_debug_expr): Likewise.
* combine.c (find_split_point): Likewise.
(expand_compound_operation): Likewise. Add FALLTHRU.
(make_compound_operation): Adjust fall through comment.
(canon_reg_for_combine): Add FALLTHRU.
(force_to_mode): Adjust fall through comment.
(simplify_shift_const_1): Likewise.
(simplify_comparison): Likewise.
* config/aarch64/aarch64-builtins.c (aarch64_simd_expand_args): Add
FALLTHRU.
* config/aarch64/predicates.md: Likewise.
* config/i386/i386.c (function_arg_advance_32): Likewise.
(ix86_gimplify_va_arg): Likewise.
(print_reg): Likewise.
(ix86_print_operand): Likewise.
(ix86_build_const_vector): Likewise.
(ix86_expand_branch): Likewise.
(ix86_sched_init_global): Adjust fall through comment.
(ix86_expand_args_builtin): Add FALLTHRU.
(ix86_expand_builtin): Likewise.
(ix86_expand_vector_init_one_var): Likewise.
* config/rs6000/rs6000.c (rs6000_emit_vector_compare_inner): Likewise.
(rs6000_adjust_cost): Likewise.
(insn_must_be_first_in_group): Likewise.
* config/rs6000/rs6000.md: Likewise. Adjust fall through comment.
* dbxout.c (dbxout_symbol): Adjust fall through comment.
* df-scan.c (df_uses_record): Likewise.
* dojump.c (do_jump): Add FALLTHRU.
* dwarf2out.c (mem_loc_descriptor): Likewise. Adjust fall through
comment.
(resolve_args_picking_1): Adjust fall through comment.
(loc_list_from_tree_1): Likewise.
* expmed.c (make_tree): Likewise.
* expr.c (expand_expr_real_2): Add FALLTHRU.
(expand_expr_real_1): Likewise. Adjust fall through comment.
* fold-const.c (const_binop): Adjust fall through comment.
(fold_truth_not_expr): Likewise.
(fold_cond_expr_with_comparison): Add FALLTHRU.
(fold_binary_loc): Likewise.
(contains_label_1): Adjust fall through comment.
(multiple_of_p): Likewise.
* gcov-tool.c (process_args): Add FALLTHRU.
* genattrtab.c (check_attr_test): Likewise.
(write_test_expr): Likewise.
* genconfig.c (walk_insn_part): Likewise.
* genpreds.c (validate_exp): Adjust fall through comment.
(needs_variable): Likewise.
* gensupport.c (get_alternatives_number): Add FALLTHRU.
(subst_dup): Likewise.
* gimple-pretty-print.c (dump_gimple_assign): Likewise.
* gimplify.c (gimplify_addr_expr): Adjust fall through comment.
(gimplify_scan_omp_clauses): Add FALLTHRU.
(goa_stabilize_expr): Likewise.
* graphite-isl-ast-to-gimple.c (substitute_ssa_name): Adjust fall
through comment.
* hsa-gen.c (get_address_from_value): Likewise.
* ipa-icf.c (sem_function::hash_stmt): Likewise.
* ira.c (ira_setup_alts): Add FALLTHRU.
* lra-eliminations.c (lra_eliminate_regs_1): Adjust fall through
comment.
* lto-streamer-out.c (lto_output_tree_ref): Add FALLTHRU.
* opts.c (common_handle_option): Likewise.
* read-rtl.c (read_rtx_code): Likewise.
* real.c (round_for_format): Likewise.
* recog.c (asm_operand_ok): Likewise.
* reginfo.c (reg_scan_mark_refs): Adjust fall through comment.
* reload1.c (set_label_offsets): Likewise.
(eliminate_regs_1): Likewise.
(reload_reg_reaches_end_p): Likewise.
* rtlanal.c (commutative_operand_precedence): Add FALLTHRU.
(rtx_cost): Likewise.
* sched-rgn.c (is_exception_free): Likewise.
* simplify-rtx.c (simplify_rtx): Adjust fall through comment.
* stor-layout.c (int_mode_for_mode): Likewise.
* toplev.c (print_to_asm_out_file): Likewise.
(print_to_stderr): Likewise.
* tree-cfg.c (gimple_verify_flow_info): Likewise.
* tree-chrec.c (chrec_fold_plus_1): Add FALLTHRU.
(chrec_fold_multiply): Likewise.
(evolution_function_is_invariant_rec_p): Likewise.
(for_each_scev_op): Likewise.
* tree-data-ref.c (siv_subscript_p): Likewise.
(get_references_in_stmt): Likewise.
* tree.c (find_placeholder_in_expr): Adjust fall through comment.
(substitute_in_expr): Likewise.
(type_cache_hasher::equal): Likewise.
(walk_type_fields): Likewise.
* var-tracking.c (adjust_mems): Add FALLTHRU.
(set_dv_changed): Adjust fall through comment.
* varasm.c (default_function_section): Add FALLTHRU.
2016-08-12 Marek Polacek <polacek@redhat.com>
PR c/7652

2
gcc/alias.c
View File

@ -1398,7 +1398,7 @@ find_base_value (rtx src)
if (GET_CODE (src) != PLUS && GET_CODE (src) != MINUS)
break;
/* ... fall through ... */
/* fall through */
case PLUS:
case MINUS:

10
gcc/c-family/ChangeLog
View File

@ -1,3 +1,13 @@
2016-08-12 Marek Polacek <polacek@redhat.com>
PR c/7652
* c-common.c (scalar_to_vector): Adjust fall through comment.
* c-opts.c (c_common_handle_option): Likewise.
* c-pragma.c (handle_pragma_pack): Add FALLTHRU.
* c-pretty-print.c (c_pretty_printer::postfix_expression): Adjust
fall through comment.
* cilk.c (extract_free_variables): Add FALLTHRU.
2016-08-10 Jason Merrill <jason@redhat.com>
* c-cppbuiltin.c (c_cpp_builtins): Define __cpp_if_constexpr.

2
gcc/c-family/c-common.c
View File

@ -12709,7 +12709,7 @@ scalar_to_vector (location_t loc, enum tree_code code, tree op0, tree op1,
case BIT_XOR_EXPR:
case BIT_AND_EXPR:
integer_only_op = true;
/* ... fall through ... */
/* fall through */
case VEC_COND_EXPR:

2
gcc/c-family/c-opts.c
View File

@ -439,7 +439,7 @@ c_common_handle_option (size_t scode, const char *arg, int value,
case OPT_ffreestanding:
value = !value;
/* Fall through.... */
/* Fall through. */
case OPT_fhosted:
flag_hosted = value;
flag_no_builtin = !value;

1
gcc/c-family/c-pragma.c
View File

@ -214,6 +214,7 @@ handle_pragma_pack (cpp_reader * ARG_UNUSED (dummy))
align = maximum_field_alignment;
break;
}
/* FALLTHRU */
default:
GCC_BAD2 ("alignment must be a small power of two, not %d", align);
}

2
gcc/c-family/c-pretty-print.c
View File

@ -1662,7 +1662,7 @@ c_pretty_printer::postfix_expression (tree e)
id_expression (TREE_OPERAND (e, 0));
break;
}
/* else fall through. */
/* fall through. */
default:
primary_expression (e);

1
gcc/c-family/cilk.c
View File

@ -1097,6 +1097,7 @@ extract_free_variables (tree t, struct wrapper_data *wd,
case RESULT_DECL:
if (wd->type != CILK_BLOCK_SPAWN)
TREE_ADDRESSABLE (t) = 1;
/* FALLTHRU */
case VAR_DECL:
case PARM_DECL:
if (!is_global_var (t))

8
gcc/c/ChangeLog
View File

@ -1,3 +1,11 @@
2016-08-12 Marek Polacek <polacek@redhat.com>
PR c/7652
* c-parser.c (c_parser_external_declaration): Add FALLTHRU.
(c_parser_postfix_expression): Likewise.
* c-typeck.c (build_unary_op): Adjust fall through comment.
(c_mark_addressable): Likewise.
2016-08-11 Jakub Jelinek <jakub@redhat.com>
PR c/72816

2
gcc/c/c-parser.c
View File

@ -1557,6 +1557,7 @@ c_parser_external_declaration (c_parser *parser)
}
/* Else fall through, and yield a syntax error trying to parse
as a declaration or function definition. */
/* FALLTHRU */
default:
decl_or_fndef:
/* A declaration or a function definition (or, in Objective-C,
@ -8174,6 +8175,7 @@ c_parser_postfix_expression (c_parser *parser)
break;
}
/* Else fall through to report error. */
/* FALLTHRU */
default:
c_parser_error (parser, "expected expression");
expr.set_error ();

6
gcc/c/c-typeck.c
View File

@ -4493,7 +4493,7 @@ build_unary_op (location_t location,
return error_mark_node;
}
/* ... fall through ... */
/* fall through */
case ARRAY_REF:
if (TYPE_REVERSE_STORAGE_ORDER (TREE_TYPE (TREE_OPERAND (arg, 0))))
@ -4695,10 +4695,10 @@ c_mark_addressable (tree exp)
return false;
}
/* drops in */
/* FALLTHRU */
case FUNCTION_DECL:
TREE_ADDRESSABLE (x) = 1;
/* drops out */
/* FALLTHRU */
default:
return true;
}

2
gcc/cfgexpand.c
View File

@ -4239,7 +4239,7 @@ expand_debug_expr (tree exp)
set_mem_attributes (op0, exp, 0);
return op0;
}
/* Fall through... */
/* Fall through. */
case INTEGER_CST:
case REAL_CST:

16
gcc/combine.c
View File

@ -5135,7 +5135,7 @@ find_split_point (rtx *loc, rtx_insn *insn, bool set_src)
split = find_split_point (&XEXP (x, 2), insn, false);
if (split)
return split;
/* ... fall through ... */
/* fall through */
case RTX_BIN_ARITH:
case RTX_COMM_ARITH:
case RTX_COMPARE:
@ -5143,7 +5143,7 @@ find_split_point (rtx *loc, rtx_insn *insn, bool set_src)
split = find_split_point (&XEXP (x, 1), insn, false);
if (split)
return split;
/* ... fall through ... */
/* fall through */
case RTX_UNARY:
/* Some machines have (and (shift ...) ...) insns. If X is not
an AND, but XEXP (X, 0) is, use it as our split point. */
@ -6955,6 +6955,7 @@ expand_compound_operation (rtx x)
{
case ZERO_EXTEND:
unsignedp = 1;
/* FALLTHRU */
case SIGN_EXTEND:
/* We can't necessarily use a const_int for a multiword mode;
it depends on implicitly extending the value.
@ -6997,7 +6998,7 @@ expand_compound_operation (rtx x)
case ZERO_EXTRACT:
unsignedp = 1;
/* ... fall through ... */
/* fall through */
case SIGN_EXTRACT:
/* If the operand is a CLOBBER, just return it. */
@ -8037,7 +8038,7 @@ make_compound_operation (rtx x, enum rtx_code in_code)
break;
}
/* ... fall through ... */
/* fall through */
case ASHIFTRT:
lhs = XEXP (x, 0);
@ -8265,6 +8266,7 @@ canon_reg_for_combine (rtx x, rtx reg)
if (op0 != XEXP (x, 0) || op1 != XEXP (x, 1) || op2 != XEXP (x, 2))
return simplify_gen_ternary (GET_CODE (x), GET_MODE (x),
GET_MODE (op0), op0, op1, op2);
/* FALLTHRU */
case RTX_OBJ:
if (REG_P (x))
@ -8531,7 +8533,7 @@ force_to_mode (rtx x, machine_mode mode, unsigned HOST_WIDE_INT mask,
mode, smask, next_select);
}
/* ... fall through ... */
/* fall through */
case MULT:
/* Substituting into the operands of a widening MULT is not likely to
@ -10404,7 +10406,7 @@ simplify_shift_const_1 (enum rtx_code code, machine_mode result_mode,
continue;
}
/* ... fall through ... */
/* fall through */
case LSHIFTRT:
case ASHIFT:
@ -11730,7 +11732,7 @@ simplify_comparison (enum rtx_code code, rtx *pop0, rtx *pop1)
continue;
}
/* ... fall through ... */
/* fall through */
case SIGN_EXTRACT:
tem = expand_compound_operation (op0);

1
gcc/config/aarch64/aarch64-builtins.c
View File

@ -1017,6 +1017,7 @@ aarch64_simd_expand_args (rtx target, int icode, int have_retval,
}
/* Fall through - if the lane index isn't a constant then
the next case will error. */
/* FALLTHRU */
case SIMD_ARG_CONSTANT:
constant_arg:
if (!(*insn_data[icode].operand[opc].predicate)

2
gcc/config/aarch64/predicates.md
View File

@ -180,6 +180,7 @@
|| GET_CODE (XEXP (op, 1)) != CONST_INT)
return false;
op = XEXP (op, 0);
/* FALLTHRU */
case SYMBOL_REF:
return SYMBOL_REF_TLS_MODEL (op) == TLS_MODEL_INITIAL_EXEC;
@ -201,6 +202,7 @@
|| GET_CODE (XEXP (op, 1)) != CONST_INT)
return false;
op = XEXP (op, 0);
/* FALLTHRU */
case SYMBOL_REF:
return SYMBOL_REF_TLS_MODEL (op) == TLS_MODEL_LOCAL_EXEC;

17
gcc/config/i386/i386.c
View File

@ -9338,6 +9338,7 @@ pass_in_reg:
error_p = 1;
if (cum->float_in_sse < 2)
break;
/* FALLTHRU */
case SFmode:
if (cum->float_in_sse == -1)
error_p = 1;
@ -9605,6 +9606,7 @@ pass_in_reg:
error_p = 1;
if (cum->float_in_sse < 2)
break;
/* FALLTHRU */
case SFmode:
if (cum->float_in_sse == -1)
error_p = 1;
@ -11010,6 +11012,7 @@ ix86_gimplify_va_arg (tree valist, tree type, gimple_seq *pre_p,
container = NULL;
break;
}
/* FALLTHRU */
default:
container = construct_container (nat_mode, TYPE_MODE (type),
@ -17318,6 +17321,7 @@ print_reg (rtx x, int code, FILE *file)
case 4:
if (LEGACY_INT_REGNO_P (regno))
putc (msize == 8 && TARGET_64BIT ? 'r' : 'e', file);
/* FALLTHRU */
case 16:
case 12:
case 2:
@ -17727,6 +17731,7 @@ ix86_print_operand (FILE *file, rtx x, int code)
fputs ("eq_us", file);
break;
}
/* FALLTHRU */
case EQ:
fputs ("eq", file);
break;
@ -17736,6 +17741,7 @@ ix86_print_operand (FILE *file, rtx x, int code)
fputs ("nge", file);
break;
}
/* FALLTHRU */
case LT:
fputs ("lt", file);
break;
@ -17745,6 +17751,7 @@ ix86_print_operand (FILE *file, rtx x, int code)
fputs ("ngt", file);
break;
}
/* FALLTHRU */
case LE:
fputs ("le", file);
break;
@ -17757,6 +17764,7 @@ ix86_print_operand (FILE *file, rtx x, int code)
fputs ("neq_oq", file);
break;
}
/* FALLTHRU */
case NE:
fputs ("neq", file);
break;
@ -17766,6 +17774,7 @@ ix86_print_operand (FILE *file, rtx x, int code)
fputs ("ge", file);
break;
}
/* FALLTHRU */
case UNGE:
fputs ("nlt", file);
break;
@ -17775,6 +17784,7 @@ ix86_print_operand (FILE *file, rtx x, int code)
fputs ("gt", file);
break;
}
/* FALLTHRU */
case UNGT:
fputs ("nle", file);
break;
@ -21522,6 +21532,7 @@ ix86_build_const_vector (machine_mode mode, bool vect, rtx value)
case V4DImode:
case V2DImode:
gcc_assert (vect);
/* FALLTHRU */
case V16SFmode:
case V8SFmode:
case V4SFmode:
@ -22507,6 +22518,7 @@ ix86_expand_branch (enum rtx_code code, rtx op0, rtx op1, rtx label)
op0 = force_reg (mode, gen_rtx_XOR (mode, op0, op1));
op1 = const0_rtx;
}
/* FALLTHRU */
case TImode:
/* Expand DImode branch into multiple compare+branch. */
{
@ -29868,7 +29880,7 @@ ix86_sched_init_global (FILE *, int, int)
core2i7_ifetch_block_max_insns = 6;
break;
}
/* ... Fall through ... */
/* Fall through. */
default:
targetm.sched.dfa_post_advance_cycle = NULL;
targetm.sched.first_cycle_multipass_init = NULL;
@ -40139,6 +40151,7 @@ ix86_expand_args_builtin (const struct builtin_description *d,
error ("the next to last argument must be an 8-bit immediate");
break;
}
/* FALLTHRU */
case 1:
error ("the last argument must be an 8-bit immediate");
break;
@ -42870,6 +42883,7 @@ rdseed_step:
if (!TARGET_SSE)
/* Emit a normal call if SSE isn't available. */
return expand_call (exp, target, ignore);
/* FALLTHRU */
default:
return ix86_expand_args_builtin (d, exp, target);
}
@ -47023,6 +47037,7 @@ ix86_expand_vector_init_one_var (bool mmx_ok, machine_mode mode,
/* Use ix86_expand_vector_set in 64bit mode only. */
if (!TARGET_64BIT)
return false;
/* FALLTHRU */
case V4DFmode:
case V8SFmode:
case V8SImode:

3
gcc/config/rs6000/rs6000.c
View File

@ -22949,6 +22949,7 @@ rs6000_emit_vector_compare_inner (enum rtx_code code, rtx op0, rtx op1)
case GE:
if (GET_MODE_CLASS (mode) == MODE_VECTOR_INT)
return NULL_RTX;
/* FALLTHRU */
case EQ:
case GT:
@ -30687,6 +30688,7 @@ rs6000_adjust_cost (rtx_insn *insn, int dep_type, rtx_insn *dep_insn, int cost,
}
}
/* Fall through, no cost for output dependency. */
/* FALLTHRU */
case REG_DEP_ANTI:
/* Anti dependency; DEP_INSN reads a register that INSN writes some
@ -31833,6 +31835,7 @@ insn_must_be_first_in_group (rtx_insn *insn)
case PROCESSOR_POWER5:
if (is_cracked_insn (insn))
return true;
/* FALLTHRU */
case PROCESSOR_POWER4:
if (is_microcoded_insn (insn))
return true;

3
gcc/config/rs6000/rs6000.md
View File

@ -8153,6 +8153,7 @@
case 0:
if (TARGET_STRING)
return \"stswi %1,%P0,16\";
/* FALLTHRU */
case 1:
return \"#\";
case 2:
@ -8161,7 +8162,7 @@
if (TARGET_STRING
&& ! reg_overlap_mentioned_p (operands[0], operands[1]))
return \"lswi %0,%P1,16\";
/* ... fall through ... */
/* fall through */
case 3:
case 4:
case 5:

35
gcc/cp/ChangeLog
View File

@ -1,3 +1,38 @@
2016-08-12 Marek Polacek <polacek@redhat.com>
PR c/7652
* call.c (add_builtin_candidate): Add FALLTHRU.
(build_integral_nontype_arg_conv): Adjust fall through comment.
(build_new_op_1): Add FALLTHRU.
(convert_like_real): Adjust fall through comment.
* class.c (fixed_type_or_null): Likewise.
* constexpr.c (cxx_eval_constant_expression): Likewise.
(potential_constant_expression_1): Likewise. Add FALLTHRU.
* cp-gimplify.c (cp_gimplify_expr): Adjust fall through comment.
(cp_fold): Add FALLTHRU.
* cvt.c (build_expr_type_conversion): Adjust fall through comment.
* cxx-pretty-print.c (pp_cxx_unqualified_id): Add FALLTHRU.
(pp_cxx_qualified_id): Likewise.
(cxx_pretty_printer::constant): Adjust fall through comment.
(cxx_pretty_printer::primary_expression): Add FALLTHRU.
(pp_cxx_pm_expression): Adjust fall through comment.
(cxx_pretty_printer::expression): Add FALLTHRU.
(cxx_pretty_printer::declaration_specifiers): Reformat code.
(pp_cxx_type_specifier_seq): Adjust fall through comment.
(pp_cxx_ptr_operator): Likewise. Add FALLTHRU.
* error.c (dump_type): Adjust fall through comment.
(dump_decl): Likewise.
* mangle.c (write_type): Likewise.
* method.c (synthesized_method_walk): Add FALLTHRU.
* name-lookup.c (arg_assoc_type): Likewise.
* parser.c (cp_lexer_print_token): Adjust fall through comment.
(cp_parser_primary_expression): Add FALLTHRU.
(cp_parser_operator): Likewise.
* pt.c (find_parameter_packs_r): Likewise.
(tsubst_aggr_type): Adjust fall through comment.
* semantics.c (finish_omp_clauses): Add FALLTHRU.
* tree.c (lvalue_kind): Likewise.
2016-08-12 Alexandre Oliva <aoliva@redhat.com>
PR debug/63240

9
gcc/cp/call.c
View File

@ -2421,6 +2421,7 @@ add_builtin_candidate (struct z_candidate **candidates, enum tree_code code,
case PREDECREMENT_EXPR:
if (TREE_CODE (type1) == BOOLEAN_TYPE)
return;
/* FALLTHRU */
case POSTINCREMENT_EXPR:
case PREINCREMENT_EXPR:
if (ARITHMETIC_TYPE_P (type1) || TYPE_PTROB_P (type1))
@ -2457,6 +2458,7 @@ add_builtin_candidate (struct z_candidate **candidates, enum tree_code code,
case UNARY_PLUS_EXPR: /* unary + */
if (TYPE_PTR_P (type1))
break;
/* FALLTHRU */
case NEGATE_EXPR:
if (ARITHMETIC_TYPE_P (type1))
break;
@ -2594,6 +2596,7 @@ add_builtin_candidate (struct z_candidate **candidates, enum tree_code code,
case PLUS_EXPR:
if (ARITHMETIC_TYPE_P (type1) && ARITHMETIC_TYPE_P (type2))
break;
/* FALLTHRU */
case ARRAY_REF:
if (INTEGRAL_OR_UNSCOPED_ENUMERATION_TYPE_P (type1) && TYPE_PTROB_P (type2))
{
@ -2674,6 +2677,7 @@ add_builtin_candidate (struct z_candidate **candidates, enum tree_code code,
type2 = ptrdiff_type_node;
break;
}
/* FALLTHRU */
case MULT_EXPR:
case TRUNC_DIV_EXPR:
if (ARITHMETIC_TYPE_P (type1) && ARITHMETIC_TYPE_P (type2))
@ -3966,7 +3970,7 @@ build_integral_nontype_arg_conv (tree type, tree expr, tsubst_flags_t complain)
if (complain & tf_error)
error_at (loc, "conversion from %qT to %qT not considered for "
"non-type template argument", t, type);
/* and fall through. */
/* fall through. */
default:
conv = NULL;
@ -5493,6 +5497,7 @@ build_new_op_1 (location_t loc, enum tree_code code, int flags, tree arg1,
case MODIFY_EXPR:
if (code2 != NOP_EXPR)
break;
/* FALLTHRU */
case COMPONENT_REF:
case ARRAY_REF:
memonly = true;
@ -6661,7 +6666,7 @@ convert_like_real (conversion *convs, tree expr, tree fn, int argnum,
if (! MAYBE_CLASS_TYPE_P (totype))
return expr;
/* Else fall through. */
/* Fall through. */
case ck_base:
if (convs->kind == ck_base && !convs->need_temporary_p)
{

2
gcc/cp/class.c
View File

@ -7413,7 +7413,7 @@ fixed_type_or_null (tree instance, int *nonnull, int *cdtorp)
*nonnull = 1;
return TREE_TYPE (TREE_TYPE (instance));
}
/* fall through... */
/* fall through. */
case TARGET_EXPR:
case PARM_DECL:
case RESULT_DECL:

7
gcc/cp/constexpr.c
View File

@ -3699,7 +3699,7 @@ cxx_eval_constant_expression (const constexpr_ctx *ctx, tree t,
if (is_capture_proxy (t))
return cxx_eval_constant_expression (ctx, DECL_VALUE_EXPR (t),
lval, non_constant_p, overflow_p);
/* else fall through. */
/* fall through */
case CONST_DECL:
/* We used to not check lval for CONST_DECL, but darwin.c uses
CONST_DECL for aggregate constants. */
@ -3988,7 +3988,7 @@ cxx_eval_constant_expression (const constexpr_ctx *ctx, tree t,
overflow_p);
if (r)
break;
/* else fall through */
/* fall through */
case PLUS_EXPR:
case MINUS_EXPR:
@ -5167,7 +5167,7 @@ potential_constant_expression_1 (tree t, bool want_rval, bool strict,
/* A destructor. */
if (TYPE_P (TREE_OPERAND (t, 0)))
return true;
/* else fall through. */
/* fall through. */
case REALPART_EXPR:
case IMAGPART_EXPR:
@ -5269,6 +5269,7 @@ potential_constant_expression_1 (tree t, bool want_rval, bool strict,
}
return false;
}
/* FALLTHRU */
case INIT_EXPR:
return RECUR (TREE_OPERAND (t, 1), rval);

5
gcc/cp/cp-gimplify.c
View File

@ -659,7 +659,7 @@ cp_gimplify_expr (tree *expr_p, gimple_seq *pre_p, gimple_seq *post_p)
cp_gimplify_init_expr (expr_p);
if (TREE_CODE (*expr_p) != INIT_EXPR)
return GS_OK;
/* Otherwise fall through. */
/* Fall through. */
case MODIFY_EXPR:
modify_expr_case:
{
@ -2068,6 +2068,7 @@ cp_fold (tree x)
case VIEW_CONVERT_EXPR:
rval_ops = false;
/* FALLTHRU */
case CONVERT_EXPR:
case NOP_EXPR:
case NON_LVALUE_EXPR:
@ -2116,6 +2117,7 @@ cp_fold (tree x)
case REALPART_EXPR:
case IMAGPART_EXPR:
rval_ops = false;
/* FALLTHRU */
case CONJ_EXPR:
case FIX_TRUNC_EXPR:
case FLOAT_EXPR:
@ -2168,6 +2170,7 @@ cp_fold (tree x)
case COMPOUND_EXPR:
case MODIFY_EXPR:
rval_ops = false;
/* FALLTHRU */
case POINTER_PLUS_EXPR:
case PLUS_EXPR:
case MINUS_EXPR:

2
gcc/cp/cvt.c
View File

@ -1663,7 +1663,7 @@ build_expr_type_conversion (int desires, tree expr, bool complain)
case INTEGER_TYPE:
if ((desires & WANT_NULL) && null_ptr_cst_p (expr))
return expr;
/* else fall through... */
/* fall through. */
case BOOLEAN_TYPE:
return (desires & WANT_INT) ? expr : NULL_TREE;

17
gcc/cp/cxx-pretty-print.c
View File

@ -153,6 +153,7 @@ pp_cxx_unqualified_id (cxx_pretty_printer *pp, tree t)
case USING_DECL:
case TEMPLATE_DECL:
t = DECL_NAME (t);
/* FALLTHRU */
case IDENTIFIER_NODE:
if (t == NULL)
@ -280,6 +281,7 @@ pp_cxx_qualified_id (cxx_pretty_printer *pp, tree t)
functions and some function templates. */
case OVERLOAD:
t = OVL_CURRENT (t);
/* FALLTHRU */
case FUNCTION_DECL:
if (DECL_FUNCTION_MEMBER_P (t))
pp_cxx_nested_name_specifier (pp, DECL_CONTEXT (t));
@ -331,7 +333,7 @@ cxx_pretty_printer::constant (tree t)
pp_string (this, "nullptr");
break;
}
/* else fall through. */
/* fall through. */
default:
c_pretty_printer::constant (t);
@ -417,6 +419,7 @@ cxx_pretty_printer::primary_expression (tree t)
case BASELINK:
t = BASELINK_FUNCTIONS (t);
/* FALLTHRU */
case VAR_DECL:
case PARM_DECL:
case FIELD_DECL:
@ -872,7 +875,7 @@ pp_cxx_pm_expression (cxx_pretty_printer *pp, tree t)
pp_cxx_qualified_id (pp, t);
break;
}
/* Else fall through. */
/* Fall through. */
case MEMBER_REF:
case DOTSTAR_EXPR:
pp_cxx_pm_expression (pp, TREE_OPERAND (t, 0));
@ -1057,6 +1060,7 @@ cxx_pretty_printer::expression (tree t)
case OVERLOAD:
t = OVL_CURRENT (t);
/* FALLTHRU */
case VAR_DECL:
case PARM_DECL:
case FIELD_DECL:
@ -1267,7 +1271,9 @@ cxx_pretty_printer::declaration_specifiers (tree t)
else if (DECL_NONSTATIC_MEMBER_FUNCTION_P (t))
declaration_specifiers (TREE_TYPE (TREE_TYPE (t)));
else
default:
c_pretty_printer::declaration_specifiers (t);
break;
default:
c_pretty_printer::declaration_specifiers (t);
break;
}
@ -1364,7 +1370,7 @@ pp_cxx_type_specifier_seq (cxx_pretty_printer *pp, tree t)
pp_cxx_ptr_operator (pp, t);
break;
}
/* else fall through */
/* fall through */
default:
if (!(TREE_CODE (t) == FUNCTION_DECL && DECL_CONSTRUCTOR_P (t)))
@ -1406,6 +1412,7 @@ pp_cxx_ptr_operator (cxx_pretty_printer *pp, tree t)
pp_star (pp);
break;
}
/* FALLTHRU */
case OFFSET_TYPE:
if (TYPE_PTRMEM_P (t))
{
@ -1416,7 +1423,7 @@ pp_cxx_ptr_operator (cxx_pretty_printer *pp, tree t)
pp_cxx_cv_qualifier_seq (pp, t);
break;
}
/* else fall through. */
/* fall through. */
default:
pp_unsupported_tree (pp, t);

4
gcc/cp/error.c
View File

@ -450,7 +450,7 @@ dump_type (cxx_pretty_printer *pp, tree t, int flags)
? DECL_ORIGINAL_TYPE (t) : TREE_TYPE (t), flags);
break;
}
/* Else fall through. */
/* Fall through. */
case TEMPLATE_DECL:
case NAMESPACE_DECL:
@ -1065,7 +1065,7 @@ dump_decl (cxx_pretty_printer *pp, tree t, int flags)
dump_type (pp, DECL_CONTEXT (t), flags);
break;
}
/* Else fall through. */
/* Fall through. */
case FIELD_DECL:
case PARM_DECL:
dump_simple_decl (pp, t, TREE_TYPE (t), flags);

2
gcc/cp/mangle.c
View File

@ -2169,7 +2169,7 @@ write_type (tree type)
++is_builtin_type;
break;
}
/* else fall through. */
/* fall through. */
case TEMPLATE_PARM_INDEX:
write_template_param (type);
break;

1
gcc/cp/method.c
View File

@ -1420,6 +1420,7 @@ synthesized_method_walk (tree ctype, special_function_kind sfk, bool const_p,
case sfk_move_constructor:
case sfk_move_assignment:
move_p = true;
/* FALLTHRU */
case sfk_copy_constructor:
case sfk_copy_assignment:
copy_arg_p = true;

1
gcc/cp/name-lookup.c
View File

@ -5659,6 +5659,7 @@ arg_assoc_type (struct arg_lookup *k, tree type)
case RECORD_TYPE:
if (TYPE_PTRMEMFUNC_P (type))
return arg_assoc_type (k, TYPE_PTRMEMFUNC_FN_TYPE (type));
/* FALLTHRU */
case UNION_TYPE:
return arg_assoc_class (k, type);
case POINTER_TYPE:

4
gcc/cp/parser.c
View File

@ -1268,7 +1268,7 @@ cp_lexer_print_token (FILE * stream, cp_token *token)
For example, `struct' is mapped to an INTEGER_CST. */
if (!identifier_p (token->u.value))
break;
/* else fall through */
/* fall through */
case CPP_NAME:
fputs (IDENTIFIER_POINTER (token->u.value), stream);
break;
@ -5143,6 +5143,7 @@ cp_parser_primary_expression (cp_parser *parser,
cp_parser_skip_to_end_of_block_or_statement (parser);
return error_mark_node;
}
/* FALLTHRU */
default:
cp_parser_error (parser, "expected primary-expression");
return error_mark_node;
@ -14096,6 +14097,7 @@ cp_parser_operator (cp_parser* parser)
case CPP_UTF8STRING:
case CPP_UTF8STRING_USERDEF:
utf8 = true;
/* FALLTHRU */
case CPP_STRING:
case CPP_WSTRING:
case CPP_STRING16:

3
gcc/cp/pt.c
View File

@ -3450,6 +3450,7 @@ find_parameter_packs_r (tree *tp, int *walk_subtrees, void* data)
case TEMPLATE_TYPE_PARM:
t = TYPE_MAIN_VARIANT (t);
/* FALLTHRU */
case TEMPLATE_TEMPLATE_PARM:
/* If the placeholder appears in the decl-specifier-seq of a function
parameter pack (14.6.3), or the type-specifier-seq of a type-id that
@ -11466,7 +11467,7 @@ tsubst_aggr_type (tree t,
if (TYPE_PTRMEMFUNC_P (t))
return tsubst (TYPE_PTRMEMFUNC_FN_TYPE (t), args, complain, in_decl);
/* Else fall through. */
/* Fall through. */
case ENUMERAL_TYPE:
case UNION_TYPE:
if (TYPE_TEMPLATE_INFO (t) && uses_template_parms (t))

2
gcc/cp/semantics.c
View File

@ -6225,11 +6225,13 @@ finish_omp_clauses (tree clauses, enum c_omp_region_type ort)
OMP_CLAUSE_OPERAND (c, 1) = t;
}
/* Check operand 0, the num argument. */
/* FALLTHRU */
case OMP_CLAUSE_WORKER:
case OMP_CLAUSE_VECTOR:
if (OMP_CLAUSE_OPERAND (c, 0) == NULL_TREE)
break;
/* FALLTHRU */
case OMP_CLAUSE_NUM_TASKS:
case OMP_CLAUSE_NUM_TEAMS:

2
gcc/cp/tree.c
View File

@ -141,11 +141,13 @@ lvalue_kind (const_tree ref)
lvalues. */
if (! TREE_STATIC (ref))
return clk_none;
/* FALLTHRU */
case VAR_DECL:
if (TREE_READONLY (ref) && ! TREE_STATIC (ref)
&& DECL_LANG_SPECIFIC (ref)
&& DECL_IN_AGGR_P (ref))
return clk_none;
/* FALLTHRU */
case INDIRECT_REF:
case ARROW_EXPR:
case ARRAY_REF:

2
gcc/dbxout.c
View File

@ -2867,7 +2867,7 @@ dbxout_symbol (tree decl, int local ATTRIBUTE_UNUSED)
disguised VAR_DECLs like Out parameters in Ada. */
gcc_assert (TREE_CODE (decl) == VAR_DECL);
/* ... fall through ... */
/* fall through */
case RESULT_DECL:
case VAR_DECL:

2
gcc/df-scan.c
View File

@ -2875,7 +2875,7 @@ df_uses_record (struct df_collection_rec *collection_rec,
df_uses_record (collection_rec, loc, ref_type, bb, insn_info, flags);
return;
}
/* ... Fall through ... */
/* Fall through */
case REG:
df_ref_record (DF_REF_REGULAR, collection_rec,

3
gcc/dojump.c
View File

@ -461,12 +461,14 @@ do_jump (tree exp, rtx_code_label *if_false_label,
|| TREE_CODE (TREE_OPERAND (exp, 0)) == ARRAY_REF
|| TREE_CODE (TREE_OPERAND (exp, 0)) == ARRAY_RANGE_REF)
goto normal;
/* FALLTHRU */
case CONVERT_EXPR:
/* If we are narrowing the operand, we have to do the compare in the
narrower mode. */
if ((TYPE_PRECISION (TREE_TYPE (exp))
< TYPE_PRECISION (TREE_TYPE (TREE_OPERAND (exp, 0)))))
goto normal;
/* FALLTHRU */
case NON_LVALUE_EXPR:
case ABS_EXPR:
case NEGATE_EXPR:
@ -610,6 +612,7 @@ do_jump (tree exp, rtx_code_label *if_false_label,
goto normal;
/* Boolean comparisons can be compiled as TRUTH_AND_EXPR. */
/* FALLTHRU */
case TRUTH_AND_EXPR:
/* High branch cost, expand as the bitwise AND of the conditions.

7
gcc/dwarf2out.c
View File

@ -13338,6 +13338,7 @@ mem_loc_descriptor (rtx rtl, machine_mode mode,
if (!subreg_lowpart_p (rtl))
break;
inner = SUBREG_REG (rtl);
/* FALLTHRU */
case TRUNCATE:
if (inner == NULL_RTX)
inner = XEXP (rtl, 0);
@ -13675,7 +13676,7 @@ mem_loc_descriptor (rtx rtl, machine_mode mode,
: -GET_MODE_UNIT_SIZE (mem_mode),
mode));
/* ... fall through ... */
/* fall through */
case PLUS:
plus:
@ -15601,7 +15602,7 @@ resolve_args_picking_1 (dw_loc_descr_ref loc, unsigned initial_frame_offset,
if (!resolve_args_picking_1 (l->dw_loc_next, frame_offset_, dpi,
frame_offsets))
return false;
/* Fall through... */
/* Fall through. */
case DW_OP_skip:
l = l->dw_loc_oprnd1.v.val_loc;
@ -16437,7 +16438,7 @@ loc_list_from_tree_1 (tree loc, int want_address,
TREE_OPERAND (loc, 1), TREE_OPERAND (loc, 0));
}
/* ... fall through ... */
/* fall through */
case COND_EXPR:
{

2
gcc/expmed.c
View File

@ -5173,7 +5173,7 @@ make_tree (tree type, rtx x)
t = SYMBOL_REF_DECL (x);
if (t)
return fold_convert (type, build_fold_addr_expr (t));
/* else fall through. */
/* fall through. */
default:
t = build_decl (RTL_LOCATION (x), VAR_DECL, NULL_TREE, type);

11
gcc/expr.c
View File

@ -8406,6 +8406,7 @@ expand_expr_real_2 (sepops ops, rtx target, machine_mode tmode,
offset to have matching modes. */
else if (TYPE_PRECISION (sizetype) > TYPE_PRECISION (type))
treeop1 = fold_convert_loc (loc, type, treeop1);
/* FALLTHRU */
case PLUS_EXPR:
/* If we are adding a constant, a VAR_DECL that is sp, fp, or ap, and
@ -9574,9 +9575,9 @@ expand_expr_real_1 (tree exp, rtx target, machine_mode tmode,
switch (TREE_CODE_LENGTH (code))
{
default:
case 3: treeop2 = TREE_OPERAND (exp, 2);
case 2: treeop1 = TREE_OPERAND (exp, 1);
case 1: treeop0 = TREE_OPERAND (exp, 0);
case 3: treeop2 = TREE_OPERAND (exp, 2); /* FALLTHRU */
case 2: treeop1 = TREE_OPERAND (exp, 1); /* FALLTHRU */
case 1: treeop0 = TREE_OPERAND (exp, 0); /* FALLTHRU */
case 0: break;
}
ops.code = code;
@ -9748,7 +9749,7 @@ expand_expr_real_1 (tree exp, rtx target, machine_mode tmode,
&& (TREE_STATIC (exp) || DECL_EXTERNAL (exp)))
layout_decl (exp, 0);
/* ... fall through ... */
/* fall through */
case FUNCTION_DECL:
case RESULT_DECL:
@ -9956,7 +9957,7 @@ expand_expr_real_1 (tree exp, rtx target, machine_mode tmode,
return original_target;
}
/* ... fall through ... */
/* fall through */
case STRING_CST:
temp = expand_expr_constant (exp, 1, modifier);

13
gcc/fold-const.c
View File

@ -1300,7 +1300,7 @@ const_binop (enum tree_code code, tree arg1, tree arg2)
return do_mpc_arg2 (arg1, arg2, type,
/* do_nonfinite= */ folding_initializer,
mpc_div);
/* Fallthru ... */
/* Fallthru. */
case TRUNC_DIV_EXPR:
case CEIL_DIV_EXPR:
case FLOOR_DIV_EXPR:
@ -3696,7 +3696,7 @@ fold_truth_not_expr (location_t loc, tree arg)
if (TREE_CODE (TREE_TYPE (arg)) == BOOLEAN_TYPE)
return build1_loc (loc, TRUTH_NOT_EXPR, type, arg);
/* ... fall through ... */
/* fall through */
case FLOAT_EXPR:
loc1 = expr_location_or (TREE_OPERAND (arg, 0), loc);
@ -5101,6 +5101,7 @@ fold_cond_expr_with_comparison (location_t loc, tree type,
case UNLT_EXPR:
if (flag_trapping_math)
break;
/* FALLTHRU */
case LE_EXPR:
case LT_EXPR:
if (TYPE_UNSIGNED (TREE_TYPE (arg1)))
@ -10323,6 +10324,7 @@ fold_binary_loc (location_t loc,
/* If first arg is constant zero, return it. */
if (integer_zerop (arg0))
return fold_convert_loc (loc, type, arg0);
/* FALLTHRU */
case TRUTH_AND_EXPR:
/* If either arg is constant true, drop it. */
if (TREE_CODE (arg0) == INTEGER_CST && ! integer_zerop (arg0))
@ -10378,6 +10380,7 @@ fold_binary_loc (location_t loc,
/* If first arg is constant true, return it. */
if (TREE_CODE (arg0) == INTEGER_CST && ! integer_zerop (arg0))
return fold_convert_loc (loc, type, arg0);
/* FALLTHRU */
case TRUTH_OR_EXPR:
/* If either arg is constant zero, drop it. */
if (TREE_CODE (arg0) == INTEGER_CST && integer_zerop (arg0))
@ -11222,7 +11225,7 @@ contains_label_1 (tree *tp, int *walk_subtrees, void *data ATTRIBUTE_UNUSED)
case GOTO_EXPR:
*walk_subtrees = 0;
/* ... fall through ... */
/* fall through */
default:
return NULL_TREE;
@ -12602,7 +12605,7 @@ multiple_of_p (tree type, const_tree top, const_tree bottom)
< TYPE_PRECISION (TREE_TYPE (TREE_OPERAND (top, 0)))))
return 0;
/* .. fall through ... */
/* fall through */
case SAVE_EXPR:
return multiple_of_p (type, TREE_OPERAND (top, 0), bottom);
@ -12657,7 +12660,7 @@ multiple_of_p (tree type, const_tree top, const_tree bottom)
return 1;
}
/* .. fall through ... */
/* fall through */
default:
return 0;

12
gcc/fortran/ChangeLog
View File

@ -1,3 +1,15 @@
2016-08-12 Marek Polacek <polacek@redhat.com>
PR c/7652
* decl.c (match_attr_spec): Add FALLTHRU.
* primary.c (match_arg_list_function): Likewise.
* resolve.c (resolve_operator): Adjust fall through comment.
(fixup_charlen): Add FALLTHRU.
(resolve_allocate_expr): Adjust fall through comment.
* trans-array.c (gfc_conv_ss_startstride): Add FALLTHRU.
* trans-intrinsic.c (gfc_conv_intrinsic_len): Adjust fall through
comment.
2016-08-11 Janne Blomqvist <jb@gcc.gnu.org>
* check.c (gfc_check_random_seed): Use new seed size in check.

1
gcc/fortran/decl.c
View File

@ -3927,6 +3927,7 @@ match_attr_spec (void)
d = DECL_CODIMENSION;
break;
}
/* FALLTHRU */
case 'n':
if (match_string_p ("tiguous"))
{

3
gcc/fortran/primary.c
View File

@ -1686,18 +1686,21 @@ match_arg_list_function (gfc_actual_arglist *result)
result->name = "%LOC";
break;
}
/* FALLTHRU */
case 'r':
if (strncmp (name, "ref", 3) == 0)
{
result->name = "%REF";
break;
}
/* FALLTHRU */
case 'v':
if (strncmp (name, "val", 3) == 0)
{
result->name = "%VAL";
break;
}
/* FALLTHRU */
default:
m = MATCH_ERROR;
goto cleanup;

9
gcc/fortran/resolve.c
View File

@ -3542,7 +3542,7 @@ resolve_operator (gfc_expr *e)
if (!gfc_resolve_expr (e->value.op.op2))
return false;
/* Fall through... */
/* Fall through. */
case INTRINSIC_NOT:
case INTRINSIC_UPLUS:
@ -3660,7 +3660,7 @@ resolve_operator (gfc_expr *e)
goto bad_op;
}
/* Fall through... */
/* Fall through. */
case INTRINSIC_EQ:
case INTRINSIC_EQ_OS:
@ -5419,14 +5419,17 @@ fixup_charlen (gfc_expr *e)
{
case EXPR_OP:
gfc_resolve_character_operator (e);
/* FALLTHRU */
case EXPR_ARRAY:
if (e->expr_type == EXPR_ARRAY)
gfc_resolve_character_array_constructor (e);
/* FALLTHRU */
case EXPR_SUBSTRING:
if (!e->ts.u.cl && e->ref)
gfc_resolve_substring_charlen (e);
/* FALLTHRU */
default:
if (!e->ts.u.cl)
@ -7301,7 +7304,7 @@ resolve_allocate_expr (gfc_expr *e, gfc_code *code, bool *array_alloc_wo_spec)
&& ar->stride[i] == NULL)
break;
/* Fall Through... */
/* Fall through. */
case DIMEN_UNKNOWN:
case DIMEN_VECTOR:

1
gcc/fortran/trans-array.c
View File

@ -4041,6 +4041,7 @@ done:
continue;
}
/* FALLTHRU */
case GFC_SS_CONSTRUCTOR:
case GFC_SS_FUNCTION:
for (n = 0; n < ss->dimen; n++)

2
gcc/fortran/trans-intrinsic.c
View File

@ -5329,7 +5329,7 @@ gfc_conv_intrinsic_len (gfc_se * se, gfc_expr * expr)
break;
}
/* Otherwise fall through. */
/* Fall through. */
default:
/* Anybody stupid enough to do this deserves inefficient code. */

2
gcc/gcov-tool.c
View File

@ -547,9 +547,11 @@ process_args (int argc, char **argv)
case 'h':
print_usage (false);
/* Print_usage will exit. */
/* FALLTHRU */
case 'v':
print_version ();
/* Print_version will exit. */
/* FALLTHRU */
default:
print_usage (true);
/* Print_usage will exit. */

2
gcc/genattrtab.c
View File

@ -888,6 +888,7 @@ check_attr_test (file_location loc, rtx exp, attr_desc *attr)
ATTR_IND_SIMPLIFIED_P (exp) = 1;
break;
}
/* FALLTHRU */
default:
fatal_at (loc, "invalid operator `%s' in definition of attribute"
" `%s'", GET_RTX_NAME (GET_CODE (exp)), attr->name);
@ -3458,6 +3459,7 @@ write_test_expr (FILE *outf, rtx exp, unsigned int attrs_cached, int flags,
case GE: case GT:
case LE: case LT:
comparison_operator = FLG_BITWISE;
/* FALLTHRU */
case PLUS: case MINUS: case MULT: case DIV: case MOD:
case AND: case IOR: case XOR:

1
gcc/genconfig.c
View File

@ -83,6 +83,7 @@ walk_insn_part (rtx part, int recog_p, int non_pc_set_src)
case MATCH_OP_DUP:
case MATCH_PAR_DUP:
++dup_operands_seen_this_insn;
/* FALLTHRU */
case MATCH_SCRATCH:
case MATCH_PARALLEL:
case MATCH_OPERATOR:

8
gcc/genpreds.c
View File

@ -51,12 +51,12 @@ validate_exp (rtx exp, const char *name, file_location loc)
case IF_THEN_ELSE:
if (validate_exp (XEXP (exp, 2), name, loc))
return true;
/* else fall through */
/* fall through */
case AND:
case IOR:
if (validate_exp (XEXP (exp, 1), name, loc))
return true;
/* else fall through */
/* fall through */
case NOT:
return validate_exp (XEXP (exp, 0), name, loc);
@ -174,12 +174,12 @@ needs_variable (rtx exp, const char *var)
case IF_THEN_ELSE:
if (needs_variable (XEXP (exp, 2), var))
return true;
/* else fall through */
/* fall through */
case AND:
case IOR:
if (needs_variable (XEXP (exp, 1), var))
return true;
/* else fall through */
/* fall through */
case NOT:
return needs_variable (XEXP (exp, 0), var);

2
gcc/gensupport.c
View File

@ -1038,6 +1038,7 @@ get_alternatives_number (rtx pattern, int *n_alt, file_location loc)
case 'V':
if (XVEC (pattern, i) == NULL)
break;
/* FALLTHRU */
case 'E':
for (j = XVECLEN (pattern, i) - 1; j >= 0; --j)
@ -2156,6 +2157,7 @@ subst_dup (rtx pattern, int n_alt, int n_subst_alt)
case 'V':
if (XVEC (pattern, i) == NULL)
break;
/* FALLTHRU */
case 'E':
if (code != MATCH_DUP && code != MATCH_OP_DUP)
for (j = XVECLEN (pattern, i) - 1; j >= 0; --j)

2
gcc/gimple-pretty-print.c
View File

@ -517,8 +517,10 @@ dump_gimple_assign (pretty_printer *buffer, gassign *gs, int spc, int flags)
{
case 4:
arg3 = gimple_assign_rhs3 (gs);
/* FALLTHRU */
case 3:
arg2 = gimple_assign_rhs2 (gs);
/* FALLTHRU */
case 2:
arg1 = gimple_assign_rhs1 (gs);
break;

5
gcc/gimplify.c
View File

@ -5190,7 +5190,7 @@ gimplify_addr_expr (tree *expr_p, gimple_seq *pre_p, gimple_seq *post_p)
if (integer_zerop (TREE_OPERAND (op0, 1)))
goto do_indirect_ref;
/* ... fall through ... */
/* fall through */
default:
/* If we see a call to a declared builtin or see its address
@ -6941,6 +6941,7 @@ gimplify_scan_omp_clauses (tree *list_p, gimple_seq *pre_p,
case OACC_DATA:
if (TREE_CODE (TREE_TYPE (decl)) != ARRAY_TYPE)
break;
/* FALLTHRU */
case OMP_TARGET_DATA:
case OMP_TARGET_ENTER_DATA:
case OMP_TARGET_EXIT_DATA:
@ -9964,6 +9965,7 @@ goa_stabilize_expr (tree *expr_p, gimple_seq *pre_p, tree lhs_addr,
case tcc_comparison:
saw_lhs |= goa_stabilize_expr (&TREE_OPERAND (expr, 1), pre_p, lhs_addr,
lhs_var);
/* FALLTHRU */
case tcc_unary:
saw_lhs |= goa_stabilize_expr (&TREE_OPERAND (expr, 0), pre_p, lhs_addr,
lhs_var);
@ -9978,6 +9980,7 @@ goa_stabilize_expr (tree *expr_p, gimple_seq *pre_p, tree lhs_addr,
case TRUTH_XOR_EXPR:
saw_lhs |= goa_stabilize_expr (&TREE_OPERAND (expr, 1), pre_p,
lhs_addr, lhs_var);
/* FALLTHRU */
case TRUTH_NOT_EXPR:
saw_lhs |= goa_stabilize_expr (&TREE_OPERAND (expr, 0), pre_p,
lhs_addr, lhs_var);

2
gcc/graphite-isl-ast-to-gimple.c
View File

@ -1496,7 +1496,7 @@ substitute_ssa_name (tree exp, tree f, tree r)
if (exp == f)
return r;
/* Fall through... */
/* Fall through. */
case tcc_exceptional:
case tcc_unary:

2
gcc/hsa-gen.c
View File

@ -4519,7 +4519,7 @@ get_address_from_value (tree val, hsa_bb *hbb)
case INTEGER_CST:
if (tree_fits_shwi_p (val))
return new hsa_op_address (NULL, NULL, tree_to_shwi (val));
/* Otherwise fall-through */
/* fall-through */
default:
HSA_SORRY_ATV (EXPR_LOCATION (val),

2
gcc/ipa-icf.c
View File

@ -1643,7 +1643,7 @@ sem_function::hash_stmt (gimple *stmt, inchash::hash &hstate)
add_type (TREE_TYPE (gimple_assign_lhs (stmt)), two);
break;
}
/* ... fall through ... */
/* fall through */
case GIMPLE_CALL:
case GIMPLE_ASM:
case GIMPLE_COND:

1
gcc/ira.c
View File

@ -1832,6 +1832,7 @@ ira_setup_alts (rtx_insn *insn, HARD_REG_SET &alts)
case '#':
case ',':
c = '\0';
/* FALLTHRU */
case '\0':
len = 0;
break;

7
gcc/java/ChangeLog
View File

@ -1,3 +1,10 @@
2016-08-12 Marek Polacek <polacek@redhat.com>
PR c/7652
* expr.c (java_truthvalue_conversion): Adjust fall through comment.
* jcf-io.c (verify_constant_pool): Likewise.
* typeck.c (promote_type): Likewise.
2016-08-02 Roger Sayle <roger@nextmovesoftware.com>
* expr.c (push_value): Only call flush_quick_stack for non-constant

2
gcc/java/expr.c
View File

@ -192,7 +192,7 @@ java_truthvalue_conversion (tree expr)
if (TYPE_PRECISION (TREE_TYPE (expr))
>= TYPE_PRECISION (TREE_TYPE (TREE_OPERAND (expr, 0))))
return java_truthvalue_conversion (TREE_OPERAND (expr, 0));
/* fall through to default */
/* fall through */
default:
return fold_build2 (NE_EXPR, boolean_type_node,

2
gcc/java/jcf-io.c
View File

@ -471,7 +471,7 @@ verify_constant_pool (JCF *jcf)
if (n <= 0 || n >= JPOOL_SIZE(jcf)
|| JPOOL_TAG (jcf, n) != CONSTANT_Utf8)
return i;
/* ... fall through ... */
/* fall through */
case CONSTANT_Class:
case CONSTANT_String:
n = JPOOL_USHORT1 (jcf, i);

2
gcc/java/typeck.c
View File

@ -341,7 +341,7 @@ promote_type (tree type)
return promoted_byte_type_node;
return int_type_node;
}
/* ... else fall through ... */
/* fall through */
default:
return type;
}

4
gcc/lra-eliminations.c
View File

@ -484,7 +484,7 @@ lra_eliminate_regs_1 (rtx_insn *insn, rtx x, machine_mode mem_mode,
return gen_rtx_MULT (Pmode, to, XEXP (x, 1));
}
/* ... fall through ... */
/* fall through */
case CALL:
case COMPARE:
@ -536,7 +536,7 @@ lra_eliminate_regs_1 (rtx_insn *insn, rtx x, machine_mode mem_mode,
}
}
/* ... fall through ... */
/* fall through */
case INSN_LIST:
case INT_LIST:

1
gcc/lto-streamer-out.c
View File

@ -231,6 +231,7 @@ lto_output_tree_ref (struct output_block *ob, tree expr)
case VAR_DECL:
case DEBUG_EXPR_DECL:
gcc_assert (decl_function_context (expr) == NULL || TREE_STATIC (expr));
/* FALLTHRU */
case PARM_DECL:
streamer_write_record_start (ob, LTO_global_decl_ref);
lto_output_var_decl_index (ob->decl_state, ob->main_stream, expr);

5
gcc/objc/ChangeLog
View File

@ -1,3 +1,8 @@
2016-08-12 Marek Polacek <polacek@redhat.com>
PR c/7652
* objc-encoding.c (encode_type): Add FALLTHRU.
2016-06-07 David Malcolm <dmalcolm@redhat.com>
* objc-act.c (objc_build_component_ref): Update call

1
gcc/objc/objc-encoding.c
View File

@ -622,6 +622,7 @@ encode_type (tree type, int curtype, int format)
}
/* Else, they are encoded exactly like the integer type that is
used by the compiler to store them. */
/* FALLTHRU */
case INTEGER_TYPE:
{
char c;

3
gcc/opts.c
View File

@ -1980,6 +1980,7 @@ common_handle_option (struct gcc_options *opts,
opts->x_flag_profile_use = true;
value = true;
/* No break here - do -fprofile-use processing. */
/* FALLTHRU */
case OPT_fprofile_use:
enable_fdo_optimizations (opts, opts_set, value);
if (!opts_set->x_flag_profile_reorder_functions)
@ -1996,6 +1997,7 @@ common_handle_option (struct gcc_options *opts,
opts->x_flag_auto_profile = true;
value = true;
/* No break here - do -fauto-profile processing. */
/* FALLTHRU */
case OPT_fauto_profile:
enable_fdo_optimizations (opts, opts_set, value);
if (!opts_set->x_flag_profile_correction)
@ -2009,6 +2011,7 @@ common_handle_option (struct gcc_options *opts,
opts->x_profile_data_prefix = xstrdup (arg);
value = true;
/* No break here - do -fprofile-generate processing. */
/* FALLTHRU */
case OPT_fprofile_generate:
if (!opts_set->x_profile_arc_flag)
opts->x_profile_arc_flag = value;

1
gcc/read-rtl.c
View File

@ -1163,6 +1163,7 @@ read_rtx_code (const char *code_name)
break;
}
/* Now process the vector. */
/* FALLTHRU */
case 'E':
{

1
gcc/real.c
View File

@ -2667,6 +2667,7 @@ round_for_format (const struct real_format *fmt, REAL_VALUE_TYPE *r)
{
underflow:
get_zero (r, r->sign);
/* FALLTHRU */
case rvc_zero:
if (!fmt->has_signed_zero)
r->sign = 0;

1
gcc/recog.c
View File

@ -1792,6 +1792,7 @@ asm_operand_ok (rtx op, const char *constraint, const char **constraints)
Match any memory and hope things are resolved after reload. */
incdec_ok = true;
/* FALLTHRU */
default:
cn = lookup_constraint (constraint);
switch (get_constraint_type (cn))

2
gcc/reginfo.c
View File

@ -1149,7 +1149,7 @@ reg_scan_mark_refs (rtx x, rtx_insn *insn)
if (REG_P (dest) && !REG_ATTRS (dest))
set_reg_attrs_from_value (dest, SET_SRC (x));
/* ... fall through ... */
/* fall through */
default:
{

10
gcc/reload1.c
View File

@ -2328,7 +2328,7 @@ set_label_offsets (rtx x, rtx_insn *insn, int initial_p)
x = LABEL_REF_LABEL (x);
/* ... fall through ... */
/* fall through */
case CODE_LABEL:
/* If we know nothing about this label, set the desired offsets. Note
@ -2375,7 +2375,7 @@ set_label_offsets (rtx x, rtx_insn *insn, int initial_p)
case JUMP_INSN:
set_label_offsets (PATTERN (insn), insn, initial_p);
/* ... fall through ... */
/* fall through */
case INSN:
case CALL_INSN:
@ -2690,7 +2690,7 @@ eliminate_regs_1 (rtx x, machine_mode mem_mode, rtx insn,
ep->previous_offset * INTVAL (XEXP (x, 1)));
}
/* ... fall through ... */
/* fall through */
case CALL:
case COMPARE:
@ -2737,7 +2737,7 @@ eliminate_regs_1 (rtx x, machine_mode mem_mode, rtx insn,
}
}
/* ... fall through ... */
/* fall through */
case INSN_LIST:
case INT_LIST:
@ -5499,7 +5499,7 @@ reload_reg_reaches_end_p (unsigned int regno, int reloadnum)
opnum = reload_n_operands;
/* ... fall through ... */
/* fall through */
case RELOAD_FOR_OUTPUT:
case RELOAD_FOR_OUTPUT_ADDRESS:

3
gcc/rtlanal.c
View File

@ -3421,6 +3421,7 @@ commutative_operand_precedence (rtx op)
/* Then prefer NEG and NOT. */
if (code == NEG || code == NOT)
return 1;
/* FALLTHRU */
default:
return 0;
@ -4095,7 +4096,7 @@ rtx_cost (rtx x, machine_mode mode, enum rtx_code outer_code,
factor = GET_MODE_SIZE (mode) / UNITS_PER_WORD;
if (factor == 0)
factor = 1;
/* Pass through. */
/* FALLTHRU */
default:
total = factor * COSTS_N_INSNS (1);
}

1
gcc/sched-rgn.c
View File

@ -2036,6 +2036,7 @@ is_exception_free (rtx_insn *insn, int bb_src, int bb_trg)
if (is_pfree (insn, bb_src, bb_trg))
return 1;
/* Don't 'break' here: PFREE-candidate is also PRISKY-candidate. */
/* FALLTHRU */
case PRISKY_CANDIDATE:
if (!flag_schedule_speculative_load_dangerous
|| is_prisky (insn, bb_src, bb_trg))

2
gcc/simplify-rtx.c
View File

@ -6256,7 +6256,7 @@ simplify_rtx (const_rtx x)
if (swap_commutative_operands_p (XEXP (x, 0), XEXP (x, 1)))
return simplify_gen_binary (code, mode, XEXP (x, 1), XEXP (x, 0));
/* Fall through.... */
/* Fall through. */
case RTX_BIN_ARITH:
return simplify_binary_operation (code, mode, XEXP (x, 0), XEXP (x, 1));

2
gcc/stor-layout.c
View File

@ -398,7 +398,7 @@ int_mode_for_mode (machine_mode mode)
if (mode == BLKmode)
break;
/* ... fall through ... */
/* fall through */
case MODE_CC:
default:

4
gcc/toplev.c
View File

@ -731,7 +731,7 @@ print_to_asm_out_file (print_switch_type type, const char * text)
case SWITCH_TYPE_DESCRIPTIVE:
if (ASM_COMMENT_START[0] == 0)
prepend_sep = false;
/* Drop through. */
/* FALLTHRU */
case SWITCH_TYPE_PASSED:
case SWITCH_TYPE_ENABLED:
if (prepend_sep)
@ -761,7 +761,7 @@ print_to_stderr (print_switch_type type, const char * text)
case SWITCH_TYPE_PASSED:
case SWITCH_TYPE_ENABLED:
fputc (' ', stderr);
/* Drop through. */
/* FALLTHRU */
case SWITCH_TYPE_DESCRIPTIVE:
fputs (text, stderr);

2
gcc/tree-cfg.c
View File

@ -5412,7 +5412,7 @@ gimple_verify_flow_info (void)
case GIMPLE_CALL:
if (!gimple_call_builtin_p (stmt, BUILT_IN_RETURN))
break;
/* ... fallthru ... */
/* fallthru */
case GIMPLE_RETURN:
if (!single_succ_p (bb)
|| (single_succ_edge (bb)->flags

10
gcc/tree-chrec.c
View File

@ -287,6 +287,7 @@ chrec_fold_plus_1 (enum tree_code code, tree type,
CASE_CONVERT:
if (tree_contains_chrecs (op1, NULL))
return chrec_dont_know;
/* FALLTHRU */
default:
if (code == PLUS_EXPR || code == POINTER_PLUS_EXPR)
@ -304,6 +305,7 @@ chrec_fold_plus_1 (enum tree_code code, tree type,
CASE_CONVERT:
if (tree_contains_chrecs (op0, NULL))
return chrec_dont_know;
/* FALLTHRU */
default:
switch (TREE_CODE (op1))
@ -329,6 +331,7 @@ chrec_fold_plus_1 (enum tree_code code, tree type,
CASE_CONVERT:
if (tree_contains_chrecs (op1, NULL))
return chrec_dont_know;
/* FALLTHRU */
default:
{
@ -423,6 +426,7 @@ chrec_fold_multiply (tree type,
CASE_CONVERT:
if (tree_contains_chrecs (op1, NULL))
return chrec_dont_know;
/* FALLTHRU */
default:
if (integer_onep (op1))
@ -439,6 +443,7 @@ chrec_fold_multiply (tree type,
CASE_CONVERT:
if (tree_contains_chrecs (op0, NULL))
return chrec_dont_know;
/* FALLTHRU */
default:
if (integer_onep (op0))
@ -461,6 +466,7 @@ chrec_fold_multiply (tree type,
CASE_CONVERT:
if (tree_contains_chrecs (op1, NULL))
return chrec_dont_know;
/* FALLTHRU */
default:
if (integer_onep (op1))
@ -1026,6 +1032,7 @@ evolution_function_is_invariant_rec_p (tree chrec, int loopnum)
if (!evolution_function_is_invariant_rec_p (TREE_OPERAND (chrec, 1),
loopnum))
return false;
/* FALLTHRU */
case 1:
if (!evolution_function_is_invariant_rec_p (TREE_OPERAND (chrec, 0),
@ -1533,12 +1540,15 @@ for_each_scev_op (tree *scev, bool (*cbck) (tree *, void *), void *data)
{
case 3:
for_each_scev_op (&TREE_OPERAND (*scev, 2), cbck, data);
/* FALLTHRU */
case 2:
for_each_scev_op (&TREE_OPERAND (*scev, 1), cbck, data);
/* FALLTHRU */
case 1:
for_each_scev_op (&TREE_OPERAND (*scev, 0), cbck, data);
/* FALLTHRU */
default:
cbck (scev, data);

2
gcc/tree-data-ref.c
View File

@ -1685,6 +1685,7 @@ siv_subscript_p (const_tree chrec_a, const_tree chrec_b)
case POLYNOMIAL_CHREC:
if (CHREC_VARIABLE (chrec_a) != CHREC_VARIABLE (chrec_b))
return false;
/* FALLTHRU */
default:
return true;
@ -3890,6 +3891,7 @@ get_references_in_stmt (gimple *stmt, vec<data_ref_loc, va_heap> *references)
if (gimple_call_lhs (stmt) == NULL_TREE)
break;
ref.is_read = true;
/* FALLTHRU */
case IFN_MASK_STORE:
ptr = build_int_cst (TREE_TYPE (gimple_call_arg (stmt, 1)), 0);
align = tree_to_shwi (gimple_call_arg (stmt, 1));

8
gcc/tree.c
View File

@ -3727,7 +3727,7 @@ find_placeholder_in_expr (tree exp, vec<tree> *refs)
break;
}
/* Fall through... */
/* Fall through. */
case tcc_exceptional:
case tcc_unary:
@ -3816,7 +3816,7 @@ substitute_in_expr (tree exp, tree f, tree r)
if (exp == f)
return r;
/* Fall through... */
/* Fall through. */
case tcc_exceptional:
case tcc_unary:
@ -7027,7 +7027,7 @@ type_cache_hasher::equal (type_hash *a, type_hash *b)
TYPE_VALUES (b->type))))
return 0;
/* ... fall through ... */
/* fall through */
case INTEGER_TYPE:
case REAL_TYPE:
@ -11564,7 +11564,7 @@ walk_type_fields (tree type, walk_tree_fn func, void *data,
break;
}
/* ... fall through ... */
/* fall through */
case COMPLEX_TYPE:
WALK_SUBTREE (TREE_TYPE (type));

4
gcc/var-tracking.c
View File

@ -1056,6 +1056,7 @@ adjust_mems (rtx loc, const_rtx old_rtx, void *data)
? GET_MODE_SIZE (amd->mem_mode)
: -GET_MODE_SIZE (amd->mem_mode),
GET_MODE (loc)));
/* FALLTHRU */
case POST_INC:
case POST_DEC:
if (addr == loc)
@ -1076,6 +1077,7 @@ adjust_mems (rtx loc, const_rtx old_rtx, void *data)
return addr;
case PRE_MODIFY:
addr = XEXP (loc, 1);
/* FALLTHRU */
case POST_MODIFY:
if (addr == loc)
addr = XEXP (loc, 0);
@ -3148,7 +3150,7 @@ set_dv_changed (decl_or_value dv, bool newv)
case ONEPART_DEXPR:
if (newv)
NO_LOC_P (DECL_RTL_KNOWN_SET (dv_as_decl (dv))) = false;
/* Fall through... */
/* Fall through. */
default:
DECL_CHANGED (dv_as_decl (dv)) = newv;

1
gcc/varasm.c
View File

@ -589,6 +589,7 @@ default_function_section (tree decl, enum node_frequency freq,
these ELF section. */
if (!in_lto_p || !flag_profile_values)
return get_named_text_section (decl, ".text.hot", NULL);
/* FALLTHRU */
default:
return NULL;
}

10
libcpp/ChangeLog
View File

@ -1,3 +1,13 @@
2016-08-12 Marek Polacek <polacek@redhat.com>
PR c/7652
* lex.c (search_line_fast): Add FALLTHRU.
(_cpp_lex_direct): Likewise.
(cpp_token_val_index): Adjust fall through comment.
* macro.c (parse_params): Add FALLTHRU.
* pch.c (count_defs): Adjust fall through comment.
(write_defs): Likewise.
2016-08-06 David Malcolm <dmalcolm@redhat.com>
PR bootstrap/72823

4
libcpp/lex.c
View File

@ -610,6 +610,7 @@ search_line_fast (const uchar *s, const uchar *end ATTRIBUTE_UNUSED)
if (l != 0)
break;
s += sizeof(unsigned long);
/* FALLTHRU */
case 2:
l = u.l[i++];
if (l != 0)
@ -2717,6 +2718,7 @@ _cpp_lex_direct (cpp_reader *pfile)
}
buffer->cur++;
}
/* FALLTHRU */
default:
create_literal (pfile, result, buffer->cur - 1, 1, CPP_OTHER);
@ -3322,7 +3324,7 @@ cpp_token_val_index (const cpp_token *tok)
return CPP_TOKEN_FLD_SOURCE;
else if (tok->type == CPP_PRAGMA)
return CPP_TOKEN_FLD_PRAGMA;
/* else fall through */
/* fall through */
default:
return CPP_TOKEN_FLD_NONE;
}

1
libcpp/macro.c
View File

@ -2886,6 +2886,7 @@ parse_params (cpp_reader *pfile, cpp_macro *macro)
return true;
/* Fall through to pick up the error. */
/* FALLTHRU */
case CPP_COMMA:
if (!prev_ident)
{

4
libcpp/pch.c
View File

@ -230,7 +230,7 @@ count_defs (cpp_reader *pfile ATTRIBUTE_UNUSED, cpp_hashnode *hn, void *ss_p)
if (hn->flags & NODE_BUILTIN)
return 1;
/* else fall through. */
/* fall through. */
case NT_VOID:
{
@ -269,7 +269,7 @@ write_defs (cpp_reader *pfile ATTRIBUTE_UNUSED, cpp_hashnode *hn, void *ss_p)
if (hn->flags & NODE_BUILTIN)
return 1;
/* else fall through. */
/* fall through. */
case NT_VOID:
{

5
libiberty/ChangeLog
View File

@ -1,3 +1,8 @@
2016-08-12 Marek Polacek <polacek@redhat.com>
PR c/7652
* cp-demangle.c (d_print_mod): Add FALLTHRU.
2016-08-04 Marcel Böhme <boehme.marcel@gmail.com>
PR c++/71696

2
libiberty/cp-demangle.c
View File

@ -5777,11 +5777,13 @@ d_print_mod (struct d_print_info *dpi, int options,
case DEMANGLE_COMPONENT_REFERENCE_THIS:
/* For the ref-qualifier, put a space before the &. */
d_append_char (dpi, ' ');
/* FALLTHRU */
case DEMANGLE_COMPONENT_REFERENCE:
d_append_char (dpi, '&');
return;
case DEMANGLE_COMPONENT_RVALUE_REFERENCE_THIS:
d_append_char (dpi, ' ');
/* FALLTHRU */
case DEMANGLE_COMPONENT_RVALUE_REFERENCE:
d_append_string (dpi, "&&");
return;