function_instance * function_instance::get_function_instance_by_decl (unsigned lineno, tree decl) const { int func_name_idx = afdo_string_table->get_index_by_decl (decl); if (func_name_idx != -1) { callsite_map::const_iterator ret = callsites.find (std::make_pair (lineno, func_name_idx)); if (ret != callsites.end ()) return ret->second; } func_name_idx = afdo_string_table->get_index (lang_hooks.dwarf_name (decl, 0)); if (func_name_idx != -1) { callsite_map::const_iterator ret = callsites.find (std::make_pair (lineno, func_name_idx)); if (ret != callsites.end ()) return ret->second; } if (DECL_ABSTRACT_ORIGIN (decl)) return get_function_instance_by_decl (lineno, DECL_ABSTRACT_ORIGIN (decl)); return NULL; }
int string_table::get_index_by_decl (tree decl) const { char *name = get_original_name (IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl))); int ret = get_index (name); free (name); if (ret != -1) return ret; ret = get_index (lang_hooks.dwarf_name (decl, 0)); if (ret != -1) return ret; if (DECL_ABSTRACT_ORIGIN (decl) && DECL_ABSTRACT_ORIGIN (decl) != decl) return get_index_by_decl (DECL_ABSTRACT_ORIGIN (decl)); return -1; }
void set_decl_origin_self (tree decl) { if (DECL_ABSTRACT_ORIGIN (decl) == NULL_TREE) { DECL_ABSTRACT_ORIGIN (decl) = decl; if (TREE_CODE (decl) == FUNCTION_DECL) { tree arg; for (arg = DECL_ARGUMENTS (decl); arg; arg = DECL_CHAIN (arg)) DECL_ABSTRACT_ORIGIN (arg) = arg; if (DECL_INITIAL (decl) != NULL_TREE && DECL_INITIAL (decl) != error_mark_node) set_block_origin_self (DECL_INITIAL (decl)); } } }
static void print_function(const_tree caller, const_tree callee) { expanded_location xloc; const char *caller_name, *callee_name; gcc_assert(callee != NULL_TREE); if (DECL_ABSTRACT_ORIGIN(callee) != NULL_TREE) return; callee_name = DECL_NAME_POINTER(callee); gcc_assert(caller != NULL_TREE); caller_name = DECL_NAME_POINTER(caller); xloc = expand_location(DECL_SOURCE_LOCATION(caller)); fprintf(stderr, "DUMP_CFG:%s:%s:%s\n", caller_name, callee_name, xloc.file); }
static void update_cloned_parm (tree parm, tree cloned_parm, bool first) { DECL_ABSTRACT_ORIGIN (cloned_parm) = parm; /* We may have taken its address. */ TREE_ADDRESSABLE (cloned_parm) = TREE_ADDRESSABLE (parm); /* The definition might have different constness. */ TREE_READONLY (cloned_parm) = TREE_READONLY (parm); TREE_USED (cloned_parm) = !first || TREE_USED (parm); /* The name may have changed from the declaration. */ DECL_NAME (cloned_parm) = DECL_NAME (parm); DECL_SOURCE_LOCATION (cloned_parm) = DECL_SOURCE_LOCATION (parm); TREE_TYPE (cloned_parm) = TREE_TYPE (parm); }
void print_node (FILE *file, const char *prefix, tree node, int indent) { int hash; struct bucket *b; machine_mode mode; enum tree_code_class tclass; int len; int i; expanded_location xloc; enum tree_code code; if (node == 0) return; code = TREE_CODE (node); tclass = TREE_CODE_CLASS (code); /* Don't get too deep in nesting. If the user wants to see deeper, it is easy to use the address of a lowest-level node as an argument in another call to debug_tree. */ if (indent > 24) { print_node_brief (file, prefix, node, indent); return; } if (indent > 8 && (tclass == tcc_type || tclass == tcc_declaration)) { print_node_brief (file, prefix, node, indent); return; } /* It is unsafe to look at any other fields of an ERROR_MARK node. */ if (code == ERROR_MARK) { print_node_brief (file, prefix, node, indent); return; } /* Allow this function to be called if the table is not there. */ if (table) { hash = ((uintptr_t) node) % HASH_SIZE; /* If node is in the table, just mention its address. */ for (b = table[hash]; b; b = b->next) if (b->node == node) { print_node_brief (file, prefix, node, indent); return; } /* Add this node to the table. */ b = XNEW (struct bucket); b->node = node; b->next = table[hash]; table[hash] = b; } /* Indent to the specified column, since this is the long form. */ indent_to (file, indent); /* Print the slot this node is in, and its code, and address. */ fprintf (file, "%s <%s", prefix, get_tree_code_name (code)); dump_addr (file, " ", node); /* Print the name, if any. */ if (tclass == tcc_declaration) { if (DECL_NAME (node)) fprintf (file, " %s", IDENTIFIER_POINTER (DECL_NAME (node))); else if (code == LABEL_DECL && LABEL_DECL_UID (node) != -1) { if (dump_flags & TDF_NOUID) fprintf (file, " L.xxxx"); else fprintf (file, " L.%d", (int) LABEL_DECL_UID (node)); } else { if (dump_flags & TDF_NOUID) fprintf (file, " %c.xxxx", code == CONST_DECL ? 'C' : 'D'); else fprintf (file, " %c.%u", code == CONST_DECL ? 'C' : 'D', DECL_UID (node)); } } else if (tclass == tcc_type) { if (TYPE_NAME (node)) { if (TREE_CODE (TYPE_NAME (node)) == IDENTIFIER_NODE) fprintf (file, " %s", IDENTIFIER_POINTER (TYPE_NAME (node))); else if (TREE_CODE (TYPE_NAME (node)) == TYPE_DECL && DECL_NAME (TYPE_NAME (node))) fprintf (file, " %s", IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (node)))); } } if (code == IDENTIFIER_NODE) fprintf (file, " %s", IDENTIFIER_POINTER (node)); if (code == INTEGER_CST) { if (indent <= 4) print_node_brief (file, "type", TREE_TYPE (node), indent + 4); } else if (CODE_CONTAINS_STRUCT (code, TS_TYPED)) { print_node (file, "type", TREE_TYPE (node), indent + 4); if (TREE_TYPE (node)) indent_to (file, indent + 3); } if (!TYPE_P (node) && TREE_SIDE_EFFECTS (node)) fputs (" side-effects", file); if (TYPE_P (node) ? TYPE_READONLY (node) : TREE_READONLY (node)) fputs (" readonly", file); if (TYPE_P (node) && TYPE_ATOMIC (node)) fputs (" atomic", file); if (!TYPE_P (node) && TREE_CONSTANT (node)) fputs (" constant", file); else if (TYPE_P (node) && TYPE_SIZES_GIMPLIFIED (node)) fputs (" sizes-gimplified", file); if (TYPE_P (node) && !ADDR_SPACE_GENERIC_P (TYPE_ADDR_SPACE (node))) fprintf (file, " address-space-%d", TYPE_ADDR_SPACE (node)); if (TREE_ADDRESSABLE (node)) fputs (" addressable", file); if (TREE_THIS_VOLATILE (node)) fputs (" volatile", file); if (TREE_ASM_WRITTEN (node)) fputs (" asm_written", file); if (TREE_USED (node)) fputs (" used", file); if (TREE_NOTHROW (node)) fputs (" nothrow", file); if (TREE_PUBLIC (node)) fputs (" public", file); if (TREE_PRIVATE (node)) fputs (" private", file); if (TREE_PROTECTED (node)) fputs (" protected", file); if (TREE_STATIC (node)) fputs (code == CALL_EXPR ? " must-tail-call" : " static", file); if (TREE_DEPRECATED (node)) fputs (" deprecated", file); if (TREE_VISITED (node)) fputs (" visited", file); if (code != TREE_VEC && code != INTEGER_CST && code != SSA_NAME) { if (TREE_LANG_FLAG_0 (node)) fputs (" tree_0", file); if (TREE_LANG_FLAG_1 (node)) fputs (" tree_1", file); if (TREE_LANG_FLAG_2 (node)) fputs (" tree_2", file); if (TREE_LANG_FLAG_3 (node)) fputs (" tree_3", file); if (TREE_LANG_FLAG_4 (node)) fputs (" tree_4", file); if (TREE_LANG_FLAG_5 (node)) fputs (" tree_5", file); if (TREE_LANG_FLAG_6 (node)) fputs (" tree_6", file); } /* DECL_ nodes have additional attributes. */ switch (TREE_CODE_CLASS (code)) { case tcc_declaration: if (CODE_CONTAINS_STRUCT (code, TS_DECL_COMMON)) { if (DECL_UNSIGNED (node)) fputs (" unsigned", file); if (DECL_IGNORED_P (node)) fputs (" ignored", file); if (DECL_ABSTRACT_P (node)) fputs (" abstract", file); if (DECL_EXTERNAL (node)) fputs (" external", file); if (DECL_NONLOCAL (node)) fputs (" nonlocal", file); } if (CODE_CONTAINS_STRUCT (code, TS_DECL_WITH_VIS)) { if (DECL_WEAK (node)) fputs (" weak", file); if (DECL_IN_SYSTEM_HEADER (node)) fputs (" in_system_header", file); } if (CODE_CONTAINS_STRUCT (code, TS_DECL_WRTL) && code != LABEL_DECL && code != FUNCTION_DECL && DECL_REGISTER (node)) fputs (" regdecl", file); if (code == TYPE_DECL && TYPE_DECL_SUPPRESS_DEBUG (node)) fputs (" suppress-debug", file); if (code == FUNCTION_DECL && DECL_FUNCTION_SPECIFIC_TARGET (node)) fputs (" function-specific-target", file); if (code == FUNCTION_DECL && DECL_FUNCTION_SPECIFIC_OPTIMIZATION (node)) fputs (" function-specific-opt", file); if (code == FUNCTION_DECL && DECL_DECLARED_INLINE_P (node)) fputs (" autoinline", file); if (code == FUNCTION_DECL && DECL_BUILT_IN (node)) fputs (" built-in", file); if (code == FUNCTION_DECL && DECL_STATIC_CHAIN (node)) fputs (" static-chain", file); if (TREE_CODE (node) == FUNCTION_DECL && decl_is_tm_clone (node)) fputs (" tm-clone", file); if (code == FIELD_DECL && DECL_PACKED (node)) fputs (" packed", file); if (code == FIELD_DECL && DECL_BIT_FIELD (node)) fputs (" bit-field", file); if (code == FIELD_DECL && DECL_NONADDRESSABLE_P (node)) fputs (" nonaddressable", file); if (code == LABEL_DECL && EH_LANDING_PAD_NR (node)) fprintf (file, " landing-pad:%d", EH_LANDING_PAD_NR (node)); if (code == VAR_DECL && DECL_IN_TEXT_SECTION (node)) fputs (" in-text-section", file); if (code == VAR_DECL && DECL_IN_CONSTANT_POOL (node)) fputs (" in-constant-pool", file); if (code == VAR_DECL && DECL_COMMON (node)) fputs (" common", file); if (code == VAR_DECL && DECL_THREAD_LOCAL_P (node)) { fputs (" ", file); fputs (tls_model_names[DECL_TLS_MODEL (node)], file); } if (CODE_CONTAINS_STRUCT (code, TS_DECL_COMMON)) { if (DECL_VIRTUAL_P (node)) fputs (" virtual", file); if (DECL_PRESERVE_P (node)) fputs (" preserve", file); if (DECL_LANG_FLAG_0 (node)) fputs (" decl_0", file); if (DECL_LANG_FLAG_1 (node)) fputs (" decl_1", file); if (DECL_LANG_FLAG_2 (node)) fputs (" decl_2", file); if (DECL_LANG_FLAG_3 (node)) fputs (" decl_3", file); if (DECL_LANG_FLAG_4 (node)) fputs (" decl_4", file); if (DECL_LANG_FLAG_5 (node)) fputs (" decl_5", file); if (DECL_LANG_FLAG_6 (node)) fputs (" decl_6", file); if (DECL_LANG_FLAG_7 (node)) fputs (" decl_7", file); mode = DECL_MODE (node); fprintf (file, " %s", GET_MODE_NAME (mode)); } if ((code == VAR_DECL || code == PARM_DECL || code == RESULT_DECL) && DECL_BY_REFERENCE (node)) fputs (" passed-by-reference", file); if (CODE_CONTAINS_STRUCT (code, TS_DECL_WITH_VIS) && DECL_DEFER_OUTPUT (node)) fputs (" defer-output", file); xloc = expand_location (DECL_SOURCE_LOCATION (node)); fprintf (file, " file %s line %d col %d", xloc.file, xloc.line, xloc.column); if (CODE_CONTAINS_STRUCT (code, TS_DECL_COMMON)) { print_node (file, "size", DECL_SIZE (node), indent + 4); print_node (file, "unit size", DECL_SIZE_UNIT (node), indent + 4); if (code != FUNCTION_DECL || DECL_BUILT_IN (node)) indent_to (file, indent + 3); if (DECL_USER_ALIGN (node)) fprintf (file, " user"); fprintf (file, " align %d", DECL_ALIGN (node)); if (code == FIELD_DECL) fprintf (file, " offset_align " HOST_WIDE_INT_PRINT_UNSIGNED, DECL_OFFSET_ALIGN (node)); if (code == FUNCTION_DECL && DECL_BUILT_IN (node)) { if (DECL_BUILT_IN_CLASS (node) == BUILT_IN_MD) fprintf (file, " built-in BUILT_IN_MD %d", DECL_FUNCTION_CODE (node)); else fprintf (file, " built-in %s:%s", built_in_class_names[(int) DECL_BUILT_IN_CLASS (node)], built_in_names[(int) DECL_FUNCTION_CODE (node)]); } } if (code == FIELD_DECL) { print_node (file, "offset", DECL_FIELD_OFFSET (node), indent + 4); print_node (file, "bit offset", DECL_FIELD_BIT_OFFSET (node), indent + 4); if (DECL_BIT_FIELD_TYPE (node)) print_node (file, "bit_field_type", DECL_BIT_FIELD_TYPE (node), indent + 4); } print_node_brief (file, "context", DECL_CONTEXT (node), indent + 4); if (CODE_CONTAINS_STRUCT (code, TS_DECL_COMMON)) { print_node_brief (file, "attributes", DECL_ATTRIBUTES (node), indent + 4); if (code != PARM_DECL) print_node_brief (file, "initial", DECL_INITIAL (node), indent + 4); } if (CODE_CONTAINS_STRUCT (code, TS_DECL_WRTL)) { print_node_brief (file, "abstract_origin", DECL_ABSTRACT_ORIGIN (node), indent + 4); } if (CODE_CONTAINS_STRUCT (code, TS_DECL_NON_COMMON)) { print_node (file, "result", DECL_RESULT_FLD (node), indent + 4); } lang_hooks.print_decl (file, node, indent); if (DECL_RTL_SET_P (node)) { indent_to (file, indent + 4); print_rtl (file, DECL_RTL (node)); } if (code == PARM_DECL) { print_node (file, "arg-type", DECL_ARG_TYPE (node), indent + 4); if (DECL_INCOMING_RTL (node) != 0) { indent_to (file, indent + 4); fprintf (file, "incoming-rtl "); print_rtl (file, DECL_INCOMING_RTL (node)); } } else if (code == FUNCTION_DECL && DECL_STRUCT_FUNCTION (node) != 0) { print_node (file, "arguments", DECL_ARGUMENTS (node), indent + 4); indent_to (file, indent + 4); dump_addr (file, "struct-function ", DECL_STRUCT_FUNCTION (node)); } if ((code == VAR_DECL || code == PARM_DECL) && DECL_HAS_VALUE_EXPR_P (node)) print_node (file, "value-expr", DECL_VALUE_EXPR (node), indent + 4); /* Print the decl chain only if decl is at second level. */ if (indent == 4) print_node (file, "chain", TREE_CHAIN (node), indent + 4); else print_node_brief (file, "chain", TREE_CHAIN (node), indent + 4); break; case tcc_type: if (TYPE_UNSIGNED (node)) fputs (" unsigned", file); if (TYPE_NO_FORCE_BLK (node)) fputs (" no-force-blk", file); if (TYPE_STRING_FLAG (node)) fputs (" string-flag", file); if (TYPE_NEEDS_CONSTRUCTING (node)) fputs (" needs-constructing", file); if ((code == RECORD_TYPE || code == UNION_TYPE || code == QUAL_UNION_TYPE || code == ARRAY_TYPE) && TYPE_REVERSE_STORAGE_ORDER (node)) fputs (" reverse-storage-order", file); /* The transparent-union flag is used for different things in different nodes. */ if ((code == UNION_TYPE || code == RECORD_TYPE) && TYPE_TRANSPARENT_AGGR (node)) fputs (" transparent-aggr", file); else if (code == ARRAY_TYPE && TYPE_NONALIASED_COMPONENT (node)) fputs (" nonaliased-component", file); if (TYPE_PACKED (node)) fputs (" packed", file); if (TYPE_RESTRICT (node)) fputs (" restrict", file); if (TYPE_LANG_FLAG_0 (node)) fputs (" type_0", file); if (TYPE_LANG_FLAG_1 (node)) fputs (" type_1", file); if (TYPE_LANG_FLAG_2 (node)) fputs (" type_2", file); if (TYPE_LANG_FLAG_3 (node)) fputs (" type_3", file); if (TYPE_LANG_FLAG_4 (node)) fputs (" type_4", file); if (TYPE_LANG_FLAG_5 (node)) fputs (" type_5", file); if (TYPE_LANG_FLAG_6 (node)) fputs (" type_6", file); if (TYPE_LANG_FLAG_7 (node)) fputs (" type_7", file); mode = TYPE_MODE (node); fprintf (file, " %s", GET_MODE_NAME (mode)); print_node (file, "size", TYPE_SIZE (node), indent + 4); print_node (file, "unit size", TYPE_SIZE_UNIT (node), indent + 4); indent_to (file, indent + 3); if (TYPE_USER_ALIGN (node)) fprintf (file, " user"); fprintf (file, " align %d symtab %d alias set " HOST_WIDE_INT_PRINT_DEC, TYPE_ALIGN (node), TYPE_SYMTAB_ADDRESS (node), (HOST_WIDE_INT) TYPE_ALIAS_SET (node)); if (TYPE_STRUCTURAL_EQUALITY_P (node)) fprintf (file, " structural equality"); else dump_addr (file, " canonical type ", TYPE_CANONICAL (node)); print_node (file, "attributes", TYPE_ATTRIBUTES (node), indent + 4); if (INTEGRAL_TYPE_P (node) || code == REAL_TYPE || code == FIXED_POINT_TYPE) { fprintf (file, " precision %d", TYPE_PRECISION (node)); print_node_brief (file, "min", TYPE_MIN_VALUE (node), indent + 4); print_node_brief (file, "max", TYPE_MAX_VALUE (node), indent + 4); } if (code == ENUMERAL_TYPE) print_node (file, "values", TYPE_VALUES (node), indent + 4); else if (code == ARRAY_TYPE) print_node (file, "domain", TYPE_DOMAIN (node), indent + 4); else if (code == VECTOR_TYPE) fprintf (file, " nunits %d", (int) TYPE_VECTOR_SUBPARTS (node)); else if (code == RECORD_TYPE || code == UNION_TYPE || code == QUAL_UNION_TYPE) print_node (file, "fields", TYPE_FIELDS (node), indent + 4); else if (code == FUNCTION_TYPE || code == METHOD_TYPE) { if (TYPE_METHOD_BASETYPE (node)) print_node_brief (file, "method basetype", TYPE_METHOD_BASETYPE (node), indent + 4); print_node (file, "arg-types", TYPE_ARG_TYPES (node), indent + 4); } else if (code == OFFSET_TYPE) print_node_brief (file, "basetype", TYPE_OFFSET_BASETYPE (node), indent + 4); if (TYPE_CONTEXT (node)) print_node_brief (file, "context", TYPE_CONTEXT (node), indent + 4); lang_hooks.print_type (file, node, indent); if (TYPE_POINTER_TO (node) || TREE_CHAIN (node)) indent_to (file, indent + 3); print_node_brief (file, "pointer_to_this", TYPE_POINTER_TO (node), indent + 4); print_node_brief (file, "reference_to_this", TYPE_REFERENCE_TO (node), indent + 4); print_node_brief (file, "chain", TREE_CHAIN (node), indent + 4); break; case tcc_expression: case tcc_comparison: case tcc_unary: case tcc_binary: case tcc_reference: case tcc_statement: case tcc_vl_exp: if (code == BIND_EXPR) { print_node (file, "vars", TREE_OPERAND (node, 0), indent + 4); print_node (file, "body", TREE_OPERAND (node, 1), indent + 4); print_node (file, "block", TREE_OPERAND (node, 2), indent + 4); break; } if (code == CALL_EXPR) { call_expr_arg_iterator iter; tree arg; print_node (file, "fn", CALL_EXPR_FN (node), indent + 4); print_node (file, "static_chain", CALL_EXPR_STATIC_CHAIN (node), indent + 4); i = 0; FOR_EACH_CALL_EXPR_ARG (arg, iter, node) { char temp[10]; sprintf (temp, "arg %d", i); print_node (file, temp, arg, indent + 4); i++; } }
static void tree_nrv (void) { tree result = DECL_RESULT (current_function_decl); tree result_type = TREE_TYPE (result); tree found = NULL; basic_block bb; block_stmt_iterator bsi; struct nrv_data data; /* If this function does not return an aggregate type in memory, then there is nothing to do. */ if (!aggregate_value_p (result, current_function_decl)) return; /* Look through each block for assignments to the RESULT_DECL. */ FOR_EACH_BB (bb) { for (bsi = bsi_start (bb); !bsi_end_p (bsi); bsi_next (&bsi)) { tree stmt = bsi_stmt (bsi); tree ret_expr; if (TREE_CODE (stmt) == RETURN_EXPR) { /* In a function with an aggregate return value, the gimplifier has changed all non-empty RETURN_EXPRs to return the RESULT_DECL. */ ret_expr = TREE_OPERAND (stmt, 0); if (ret_expr) gcc_assert (ret_expr == result); } else if (TREE_CODE (stmt) == MODIFY_EXPR && TREE_OPERAND (stmt, 0) == result) { ret_expr = TREE_OPERAND (stmt, 1); /* Now verify that this return statement uses the same value as any previously encountered return statement. */ if (found != NULL) { /* If we found a return statement using a different variable than previous return statements, then we can not perform NRV optimizations. */ if (found != ret_expr) return; } else found = ret_expr; /* The returned value must be a local automatic variable of the same type and alignment as the function's result. */ if (TREE_CODE (found) != VAR_DECL || TREE_THIS_VOLATILE (found) || DECL_CONTEXT (found) != current_function_decl || TREE_STATIC (found) || TREE_ADDRESSABLE (found) || DECL_ALIGN (found) > DECL_ALIGN (result) || !lang_hooks.types_compatible_p (TREE_TYPE (found), result_type)) return; } } } if (!found) return; /* If dumping details, then note once and only the NRV replacement. */ if (dump_file && (dump_flags & TDF_DETAILS)) { fprintf (dump_file, "NRV Replaced: "); print_generic_expr (dump_file, found, dump_flags); fprintf (dump_file, " with: "); print_generic_expr (dump_file, result, dump_flags); fprintf (dump_file, "\n"); } /* At this point we know that all the return statements return the same local which has suitable attributes for NRV. Copy debugging information from FOUND to RESULT. */ DECL_NAME (result) = DECL_NAME (found); DECL_SOURCE_LOCATION (result) = DECL_SOURCE_LOCATION (found); DECL_ABSTRACT_ORIGIN (result) = DECL_ABSTRACT_ORIGIN (found); TREE_ADDRESSABLE (result) = TREE_ADDRESSABLE (found); /* Now walk through the function changing all references to VAR to be RESULT. */ data.var = found; data.result = result; FOR_EACH_BB (bb) { for (bsi = bsi_start (bb); !bsi_end_p (bsi); ) { tree *tp = bsi_stmt_ptr (bsi); /* If this is a copy from VAR to RESULT, remove it. */ if (TREE_CODE (*tp) == MODIFY_EXPR && TREE_OPERAND (*tp, 0) == result && TREE_OPERAND (*tp, 1) == found) bsi_remove (&bsi); else { walk_tree (tp, finalize_nrv_r, &data, 0); bsi_next (&bsi); } } } /* FOUND is no longer used. Ensure it gets removed. */ var_ann (found)->used = 0; }
static void dequeue_and_dump (dump_info_p di) { dump_queue_p dq; splay_tree_node stn; dump_node_info_p dni; tree t; unsigned int index; enum tree_code code; enum tree_code_class code_class; const char* code_name; /* Get the next node from the queue. */ dq = di->queue; stn = dq->node; t = (tree) stn->key; dni = (dump_node_info_p) stn->value; index = dni->index; /* Remove the node from the queue, and put it on the free list. */ di->queue = dq->next; if (!di->queue) di->queue_end = 0; dq->next = di->free_list; di->free_list = dq; /* Print the node index. */ dump_index (di, index); /* And the type of node this is. */ if (dni->binfo_p) code_name = "binfo"; else code_name = tree_code_name[(int) TREE_CODE (t)]; fprintf (di->stream, "%-16s ", code_name); di->column = 25; /* Figure out what kind of node this is. */ code = TREE_CODE (t); code_class = TREE_CODE_CLASS (code); /* Although BINFOs are TREE_VECs, we dump them specially so as to be more informative. */ if (dni->binfo_p) { unsigned ix; tree base; VEC(tree,gc) *accesses = BINFO_BASE_ACCESSES (t); dump_child ("type", BINFO_TYPE (t)); if (BINFO_VIRTUAL_P (t)) dump_string_field (di, "spec", "virt"); dump_int (di, "bases", BINFO_N_BASE_BINFOS (t)); for (ix = 0; BINFO_BASE_ITERATE (t, ix, base); ix++) { tree access = (accesses ? VEC_index (tree, accesses, ix) : access_public_node); const char *string = NULL; if (access == access_public_node) string = "pub"; else if (access == access_protected_node) string = "prot"; else if (access == access_private_node) string = "priv"; else gcc_unreachable (); dump_string_field (di, "accs", string); queue_and_dump_index (di, "binf", base, DUMP_BINFO); } goto done; } /* We can knock off a bunch of expression nodes in exactly the same way. */ if (IS_EXPR_CODE_CLASS (code_class)) { /* If we're dumping children, dump them now. */ queue_and_dump_type (di, t); switch (code_class) { case tcc_unary: dump_child ("op 0", TREE_OPERAND (t, 0)); break; case tcc_binary: case tcc_comparison: dump_child ("op 0", TREE_OPERAND (t, 0)); dump_child ("op 1", TREE_OPERAND (t, 1)); break; case tcc_expression: case tcc_reference: case tcc_statement: case tcc_vl_exp: /* These nodes are handled explicitly below. */ break; default: gcc_unreachable (); } } else if (DECL_P (t)) { expanded_location xloc; /* All declarations have names. */ if (DECL_NAME (t)) dump_child ("name", DECL_NAME (t)); if (DECL_ASSEMBLER_NAME_SET_P (t) && DECL_ASSEMBLER_NAME (t) != DECL_NAME (t)) dump_child ("mngl", DECL_ASSEMBLER_NAME (t)); if (DECL_ABSTRACT_ORIGIN (t)) dump_child ("orig", DECL_ABSTRACT_ORIGIN (t)); /* And types. */ queue_and_dump_type (di, t); dump_child ("scpe", DECL_CONTEXT (t)); /* And a source position. */ xloc = expand_location (DECL_SOURCE_LOCATION (t)); if (xloc.file) { const char *filename = lbasename (xloc.file); dump_maybe_newline (di); fprintf (di->stream, "srcp: %s:%-6d ", filename, xloc.line); di->column += 6 + strlen (filename) + 8; } /* And any declaration can be compiler-generated. */ if (CODE_CONTAINS_STRUCT (TREE_CODE (t), TS_DECL_COMMON) && DECL_ARTIFICIAL (t)) dump_string_field (di, "note", "artificial"); if (DECL_CHAIN (t) && !dump_flag (di, TDF_SLIM, NULL)) dump_child ("chain", DECL_CHAIN (t)); } else if (code_class == tcc_type) { /* All types have qualifiers. */ int quals = lang_hooks.tree_dump.type_quals (t); if (quals != TYPE_UNQUALIFIED) { fprintf (di->stream, "qual: %c%c%c ", (quals & TYPE_QUAL_CONST) ? 'c' : ' ', (quals & TYPE_QUAL_VOLATILE) ? 'v' : ' ', (quals & TYPE_QUAL_RESTRICT) ? 'r' : ' '); di->column += 14; } /* All types have associated declarations. */ dump_child ("name", TYPE_NAME (t)); /* All types have a main variant. */ if (TYPE_MAIN_VARIANT (t) != t) dump_child ("unql", TYPE_MAIN_VARIANT (t)); /* And sizes. */ dump_child ("size", TYPE_SIZE (t)); /* All types have alignments. */ dump_int (di, "algn", TYPE_ALIGN (t)); } else if (code_class == tcc_constant) /* All constants can have types. */ queue_and_dump_type (di, t); /* Give the language-specific code a chance to print something. If it's completely taken care of things, don't bother printing anything more ourselves. */ if (lang_hooks.tree_dump.dump_tree (di, t)) goto done; /* Now handle the various kinds of nodes. */ switch (code) { int i; case IDENTIFIER_NODE: dump_string_field (di, "strg", IDENTIFIER_POINTER (t)); dump_int (di, "lngt", IDENTIFIER_LENGTH (t)); break; case TREE_LIST: dump_child ("purp", TREE_PURPOSE (t)); dump_child ("valu", TREE_VALUE (t)); dump_child ("chan", TREE_CHAIN (t)); break; case STATEMENT_LIST: { tree_stmt_iterator it; for (i = 0, it = tsi_start (t); !tsi_end_p (it); tsi_next (&it), i++) { char buffer[32]; sprintf (buffer, "%u", i); dump_child (buffer, tsi_stmt (it)); } } break; case TREE_VEC: dump_int (di, "lngt", TREE_VEC_LENGTH (t)); for (i = 0; i < TREE_VEC_LENGTH (t); ++i) { char buffer[32]; sprintf (buffer, "%u", i); dump_child (buffer, TREE_VEC_ELT (t, i)); } break; case INTEGER_TYPE: case ENUMERAL_TYPE: dump_int (di, "prec", TYPE_PRECISION (t)); dump_string_field (di, "sign", TYPE_UNSIGNED (t) ? "unsigned": "signed"); dump_child ("min", TYPE_MIN_VALUE (t)); dump_child ("max", TYPE_MAX_VALUE (t)); if (code == ENUMERAL_TYPE) dump_child ("csts", TYPE_VALUES (t)); break; case REAL_TYPE: dump_int (di, "prec", TYPE_PRECISION (t)); break; case FIXED_POINT_TYPE: dump_int (di, "prec", TYPE_PRECISION (t)); dump_string_field (di, "sign", TYPE_UNSIGNED (t) ? "unsigned": "signed"); dump_string_field (di, "saturating", TYPE_SATURATING (t) ? "saturating": "non-saturating"); break; case POINTER_TYPE: dump_child ("ptd", TREE_TYPE (t)); break; case REFERENCE_TYPE: dump_child ("refd", TREE_TYPE (t)); break; case METHOD_TYPE: dump_child ("clas", TYPE_METHOD_BASETYPE (t)); /* Fall through. */ case FUNCTION_TYPE: dump_child ("retn", TREE_TYPE (t)); dump_child ("prms", TYPE_ARG_TYPES (t)); break; case ARRAY_TYPE: dump_child ("elts", TREE_TYPE (t)); dump_child ("domn", TYPE_DOMAIN (t)); break; case RECORD_TYPE: case UNION_TYPE: if (TREE_CODE (t) == RECORD_TYPE) dump_string_field (di, "tag", "struct"); else dump_string_field (di, "tag", "union"); dump_child ("flds", TYPE_FIELDS (t)); dump_child ("fncs", TYPE_METHODS (t)); queue_and_dump_index (di, "binf", TYPE_BINFO (t), DUMP_BINFO); break; case CONST_DECL: dump_child ("cnst", DECL_INITIAL (t)); break; case DEBUG_EXPR_DECL: dump_int (di, "-uid", DEBUG_TEMP_UID (t)); /* Fall through. */ case VAR_DECL: case PARM_DECL: case FIELD_DECL: case RESULT_DECL: if (TREE_CODE (t) == PARM_DECL) dump_child ("argt", DECL_ARG_TYPE (t)); else dump_child ("init", DECL_INITIAL (t)); dump_child ("size", DECL_SIZE (t)); dump_int (di, "algn", DECL_ALIGN (t)); if (TREE_CODE (t) == FIELD_DECL) { if (DECL_FIELD_OFFSET (t)) dump_child ("bpos", bit_position (t)); } else if (TREE_CODE (t) == VAR_DECL || TREE_CODE (t) == PARM_DECL) { dump_int (di, "used", TREE_USED (t)); if (DECL_REGISTER (t)) dump_string_field (di, "spec", "register"); } break; case FUNCTION_DECL: dump_child ("args", DECL_ARGUMENTS (t)); if (DECL_EXTERNAL (t)) dump_string_field (di, "body", "undefined"); if (TREE_PUBLIC (t)) dump_string_field (di, "link", "extern"); else dump_string_field (di, "link", "static"); if (DECL_SAVED_TREE (t) && !dump_flag (di, TDF_SLIM, t)) dump_child ("body", DECL_SAVED_TREE (t)); break; case INTEGER_CST: if (TREE_INT_CST_HIGH (t)) dump_int (di, "high", TREE_INT_CST_HIGH (t)); dump_int (di, "low", TREE_INT_CST_LOW (t)); break; case STRING_CST: fprintf (di->stream, "strg: %-7s ", TREE_STRING_POINTER (t)); dump_int (di, "lngt", TREE_STRING_LENGTH (t)); break; case REAL_CST: dump_real (di, "valu", TREE_REAL_CST_PTR (t)); break; case FIXED_CST: dump_fixed (di, "valu", TREE_FIXED_CST_PTR (t)); break; case TRUTH_NOT_EXPR: case ADDR_EXPR: case INDIRECT_REF: case CLEANUP_POINT_EXPR: case SAVE_EXPR: case REALPART_EXPR: case IMAGPART_EXPR: /* These nodes are unary, but do not have code class `1'. */ dump_child ("op 0", TREE_OPERAND (t, 0)); break; case TRUTH_ANDIF_EXPR: case TRUTH_ORIF_EXPR: case INIT_EXPR: case MODIFY_EXPR: case COMPOUND_EXPR: case PREDECREMENT_EXPR: case PREINCREMENT_EXPR: case POSTDECREMENT_EXPR: case POSTINCREMENT_EXPR: /* These nodes are binary, but do not have code class `2'. */ dump_child ("op 0", TREE_OPERAND (t, 0)); dump_child ("op 1", TREE_OPERAND (t, 1)); break; case COMPONENT_REF: dump_child ("op 0", TREE_OPERAND (t, 0)); dump_child ("op 1", TREE_OPERAND (t, 1)); dump_child ("op 2", TREE_OPERAND (t, 2)); break; case ARRAY_REF: case ARRAY_RANGE_REF: dump_child ("op 0", TREE_OPERAND (t, 0)); dump_child ("op 1", TREE_OPERAND (t, 1)); dump_child ("op 2", TREE_OPERAND (t, 2)); dump_child ("op 3", TREE_OPERAND (t, 3)); break; case COND_EXPR: dump_child ("op 0", TREE_OPERAND (t, 0)); dump_child ("op 1", TREE_OPERAND (t, 1)); dump_child ("op 2", TREE_OPERAND (t, 2)); break; case TRY_FINALLY_EXPR: dump_child ("op 0", TREE_OPERAND (t, 0)); dump_child ("op 1", TREE_OPERAND (t, 1)); break; case CALL_EXPR: { int i = 0; tree arg; call_expr_arg_iterator iter; dump_child ("fn", CALL_EXPR_FN (t)); FOR_EACH_CALL_EXPR_ARG (arg, iter, t) { char buffer[32]; sprintf (buffer, "%u", i); dump_child (buffer, arg); i++; } } break; case CONSTRUCTOR: { unsigned HOST_WIDE_INT cnt; tree index, value; dump_int (di, "lngt", VEC_length (constructor_elt, CONSTRUCTOR_ELTS (t))); FOR_EACH_CONSTRUCTOR_ELT (CONSTRUCTOR_ELTS (t), cnt, index, value) { dump_child ("idx", index); dump_child ("val", value); } }
void browse_tree (tree begin) { tree head; TB_CODE tbc = TB_UNUSED_COMMAND; ssize_t rd; char *input = NULL; long input_size = 0; fprintf (TB_OUT_FILE, "\nTree Browser\n"); #define TB_SET_HEAD(N) do { \ vec_safe_push (TB_history_stack, N); \ head = N; \ if (TB_verbose) \ if (head) \ { \ print_generic_expr (TB_OUT_FILE, head, 0); \ fprintf (TB_OUT_FILE, "\n"); \ } \ } while (0) TB_SET_HEAD (begin); /* Store in a hashtable information about previous and upper statements. */ { TB_up_ht = new hash_table<tree_upper_hasher> (1023); TB_update_up (head); } while (24) { fprintf (TB_OUT_FILE, "TB> "); rd = TB_getline (&input, &input_size, TB_IN_FILE); if (rd == -1) /* EOF. */ goto ret; if (rd != 1) /* Get a new command. Otherwise the user just pressed enter, and thus she expects the last command to be reexecuted. */ tbc = TB_get_command (input); switch (tbc) { case TB_UPDATE_UP: TB_update_up (head); break; case TB_MAX: if (head && (INTEGRAL_TYPE_P (head) || TREE_CODE (head) == REAL_TYPE || TREE_CODE (head) == FIXED_POINT_TYPE)) TB_SET_HEAD (TYPE_MAX_VALUE (head)); else TB_WF; break; case TB_MIN: if (head && (INTEGRAL_TYPE_P (head) || TREE_CODE (head) == REAL_TYPE || TREE_CODE (head) == FIXED_POINT_TYPE)) TB_SET_HEAD (TYPE_MIN_VALUE (head)); else TB_WF; break; case TB_ELT: if (head && TREE_CODE (head) == TREE_VEC) { /* This command takes another argument: the element number: for example "elt 1". */ TB_NIY; } else if (head && TREE_CODE (head) == VECTOR_CST) { /* This command takes another argument: the element number: for example "elt 1". */ TB_NIY; } else TB_WF; break; case TB_VALUE: if (head && TREE_CODE (head) == TREE_LIST) TB_SET_HEAD (TREE_VALUE (head)); else TB_WF; break; case TB_PURPOSE: if (head && TREE_CODE (head) == TREE_LIST) TB_SET_HEAD (TREE_PURPOSE (head)); else TB_WF; break; case TB_IMAG: if (head && TREE_CODE (head) == COMPLEX_CST) TB_SET_HEAD (TREE_IMAGPART (head)); else TB_WF; break; case TB_REAL: if (head && TREE_CODE (head) == COMPLEX_CST) TB_SET_HEAD (TREE_REALPART (head)); else TB_WF; break; case TB_BLOCK: if (head && TREE_CODE (head) == BIND_EXPR) TB_SET_HEAD (TREE_OPERAND (head, 2)); else TB_WF; break; case TB_SUBBLOCKS: if (head && TREE_CODE (head) == BLOCK) TB_SET_HEAD (BLOCK_SUBBLOCKS (head)); else TB_WF; break; case TB_SUPERCONTEXT: if (head && TREE_CODE (head) == BLOCK) TB_SET_HEAD (BLOCK_SUPERCONTEXT (head)); else TB_WF; break; case TB_VARS: if (head && TREE_CODE (head) == BLOCK) TB_SET_HEAD (BLOCK_VARS (head)); else if (head && TREE_CODE (head) == BIND_EXPR) TB_SET_HEAD (TREE_OPERAND (head, 0)); else TB_WF; break; case TB_REFERENCE_TO_THIS: if (head && TYPE_P (head)) TB_SET_HEAD (TYPE_REFERENCE_TO (head)); else TB_WF; break; case TB_POINTER_TO_THIS: if (head && TYPE_P (head)) TB_SET_HEAD (TYPE_POINTER_TO (head)); else TB_WF; break; case TB_BASETYPE: if (head && TREE_CODE (head) == OFFSET_TYPE) TB_SET_HEAD (TYPE_OFFSET_BASETYPE (head)); else TB_WF; break; case TB_ARG_TYPES: if (head && (TREE_CODE (head) == FUNCTION_TYPE || TREE_CODE (head) == METHOD_TYPE)) TB_SET_HEAD (TYPE_ARG_TYPES (head)); else TB_WF; break; case TB_METHOD_BASE_TYPE: if (head && (TREE_CODE (head) == FUNCTION_TYPE || TREE_CODE (head) == METHOD_TYPE) && TYPE_METHOD_BASETYPE (head)) TB_SET_HEAD (TYPE_METHOD_BASETYPE (head)); else TB_WF; break; case TB_FIELDS: if (head && (TREE_CODE (head) == RECORD_TYPE || TREE_CODE (head) == UNION_TYPE || TREE_CODE (head) == QUAL_UNION_TYPE)) TB_SET_HEAD (TYPE_FIELDS (head)); else TB_WF; break; case TB_DOMAIN: if (head && TREE_CODE (head) == ARRAY_TYPE) TB_SET_HEAD (TYPE_DOMAIN (head)); else TB_WF; break; case TB_VALUES: if (head && TREE_CODE (head) == ENUMERAL_TYPE) TB_SET_HEAD (TYPE_VALUES (head)); else TB_WF; break; case TB_ARG_TYPE: if (head && TREE_CODE (head) == PARM_DECL) TB_SET_HEAD (DECL_ARG_TYPE (head)); else TB_WF; break; case TB_INITIAL: if (head && DECL_P (head)) TB_SET_HEAD (DECL_INITIAL (head)); else TB_WF; break; case TB_RESULT: if (head && DECL_P (head)) TB_SET_HEAD (DECL_RESULT_FLD (head)); else TB_WF; break; case TB_ARGUMENTS: if (head && DECL_P (head)) TB_SET_HEAD (DECL_ARGUMENTS (head)); else TB_WF; break; case TB_ABSTRACT_ORIGIN: if (head && DECL_P (head)) TB_SET_HEAD (DECL_ABSTRACT_ORIGIN (head)); else if (head && TREE_CODE (head) == BLOCK) TB_SET_HEAD (BLOCK_ABSTRACT_ORIGIN (head)); else TB_WF; break; case TB_ATTRIBUTES: if (head && DECL_P (head)) TB_SET_HEAD (DECL_ATTRIBUTES (head)); else if (head && TYPE_P (head)) TB_SET_HEAD (TYPE_ATTRIBUTES (head)); else TB_WF; break; case TB_CONTEXT: if (head && DECL_P (head)) TB_SET_HEAD (DECL_CONTEXT (head)); else if (head && TYPE_P (head) && TYPE_CONTEXT (head)) TB_SET_HEAD (TYPE_CONTEXT (head)); else TB_WF; break; case TB_OFFSET: if (head && TREE_CODE (head) == FIELD_DECL) TB_SET_HEAD (DECL_FIELD_OFFSET (head)); else TB_WF; break; case TB_BIT_OFFSET: if (head && TREE_CODE (head) == FIELD_DECL) TB_SET_HEAD (DECL_FIELD_BIT_OFFSET (head)); else TB_WF; break; case TB_UNIT_SIZE: if (head && DECL_P (head)) TB_SET_HEAD (DECL_SIZE_UNIT (head)); else if (head && TYPE_P (head)) TB_SET_HEAD (TYPE_SIZE_UNIT (head)); else TB_WF; break; case TB_SIZE: if (head && DECL_P (head)) TB_SET_HEAD (DECL_SIZE (head)); else if (head && TYPE_P (head)) TB_SET_HEAD (TYPE_SIZE (head)); else TB_WF; break; case TB_TYPE: if (head && TREE_TYPE (head)) TB_SET_HEAD (TREE_TYPE (head)); else TB_WF; break; case TB_DECL_SAVED_TREE: if (head && TREE_CODE (head) == FUNCTION_DECL && DECL_SAVED_TREE (head)) TB_SET_HEAD (DECL_SAVED_TREE (head)); else TB_WF; break; case TB_BODY: if (head && TREE_CODE (head) == BIND_EXPR) TB_SET_HEAD (TREE_OPERAND (head, 1)); else TB_WF; break; case TB_CHILD_0: if (head && EXPR_P (head) && TREE_OPERAND (head, 0)) TB_SET_HEAD (TREE_OPERAND (head, 0)); else TB_WF; break; case TB_CHILD_1: if (head && EXPR_P (head) && TREE_OPERAND (head, 1)) TB_SET_HEAD (TREE_OPERAND (head, 1)); else TB_WF; break; case TB_CHILD_2: if (head && EXPR_P (head) && TREE_OPERAND (head, 2)) TB_SET_HEAD (TREE_OPERAND (head, 2)); else TB_WF; break; case TB_CHILD_3: if (head && EXPR_P (head) && TREE_OPERAND (head, 3)) TB_SET_HEAD (TREE_OPERAND (head, 3)); else TB_WF; break; case TB_PRINT: if (head) debug_tree (head); else TB_WF; break; case TB_PRETTY_PRINT: if (head) { print_generic_stmt (TB_OUT_FILE, head, 0); fprintf (TB_OUT_FILE, "\n"); } else TB_WF; break; case TB_SEARCH_NAME: break; case TB_SEARCH_CODE: { enum tree_code code; char *arg_text; arg_text = strchr (input, ' '); if (arg_text == NULL) { fprintf (TB_OUT_FILE, "First argument is missing. This isn't a valid search command. \n"); break; } code = TB_get_tree_code (arg_text + 1); /* Search in the subtree a node with the given code. */ { tree res; res = walk_tree (&head, find_node_with_code, &code, NULL); if (res == NULL_TREE) { fprintf (TB_OUT_FILE, "There's no node with this code (reachable via the walk_tree function from this node).\n"); } else { fprintf (TB_OUT_FILE, "Achoo! I got this node in the tree.\n"); TB_SET_HEAD (res); } } break; } #define TB_MOVE_HEAD(FCT) do { \ if (head) \ { \ tree t; \ t = FCT (head); \ if (t) \ TB_SET_HEAD (t); \ else \ TB_WF; \ } \ else \ TB_WF; \ } while (0) case TB_FIRST: TB_MOVE_HEAD (TB_first_in_bind); break; case TB_LAST: TB_MOVE_HEAD (TB_last_in_bind); break; case TB_UP: TB_MOVE_HEAD (TB_up_expr); break; case TB_PREV: TB_MOVE_HEAD (TB_prev_expr); break; case TB_NEXT: TB_MOVE_HEAD (TB_next_expr); break; case TB_HPREV: /* This command is a little bit special, since it deals with history stack. For this reason it should keep the "head = ..." statement and not use TB_MOVE_HEAD. */ if (head) { tree t; t = TB_history_prev (); if (t) { head = t; if (TB_verbose) { print_generic_expr (TB_OUT_FILE, head, 0); fprintf (TB_OUT_FILE, "\n"); } } else TB_WF; } else TB_WF; break; case TB_CHAIN: /* Don't go further if it's the last node in this chain. */ if (head && TREE_CODE (head) == BLOCK) TB_SET_HEAD (BLOCK_CHAIN (head)); else if (head && TREE_CHAIN (head)) TB_SET_HEAD (TREE_CHAIN (head)); else TB_WF; break; case TB_FUN: /* Go up to the current function declaration. */ TB_SET_HEAD (current_function_decl); fprintf (TB_OUT_FILE, "Current function declaration.\n"); break; case TB_HELP: /* Display a help message. */ { int i; fprintf (TB_OUT_FILE, "Possible commands are:\n\n"); for (i = 0; i < TB_UNUSED_COMMAND; i++) { fprintf (TB_OUT_FILE, "%20s - %s\n", TB_COMMAND_TEXT (i), TB_COMMAND_HELP (i)); } } break; case TB_VERBOSE: if (TB_verbose == 0) { TB_verbose = 1; fprintf (TB_OUT_FILE, "Verbose on.\n"); } else { TB_verbose = 0; fprintf (TB_OUT_FILE, "Verbose off.\n"); } break; case TB_EXIT: case TB_QUIT: /* Just exit from this function. */ goto ret; default: TB_NIY; } } ret:; delete TB_up_ht; TB_up_ht = NULL; return; }
bool maybe_clone_body (tree fn) { tree clone; bool first = true; /* APPLE LOCAL begin ARM structor thunks */ tree clone_to_call; struct clone_info info; /* APPLE LOCAL end ARM structor thunks */ /* We only clone constructors and destructors. */ if (!DECL_MAYBE_IN_CHARGE_CONSTRUCTOR_P (fn) && !DECL_MAYBE_IN_CHARGE_DESTRUCTOR_P (fn)) return 0; /* Emit the DWARF1 abstract instance. */ (*debug_hooks->deferred_inline_function) (fn); /* APPLE LOCAL begin ARM structor thunks */ /* Figure out whether we can use the 'thunk' implementation, and if so on which clones. */ info.next_clone = 0; info.which_thunks_ok = compute_use_thunks (fn); /* APPLE LOCAL end ARM structor thunks */ /* We know that any clones immediately follow FN in the TYPE_METHODS list. */ push_to_top_level (); FOR_EACH_CLONE (clone, fn) { tree parm; tree clone_parm; int parmno; splay_tree decl_map; /* Update CLONE's source position information to match FN's. */ DECL_SOURCE_LOCATION (clone) = DECL_SOURCE_LOCATION (fn); DECL_INLINE (clone) = DECL_INLINE (fn); DECL_DECLARED_INLINE_P (clone) = DECL_DECLARED_INLINE_P (fn); /* LLVM LOCAL begin inlinehint attribute */ DECL_EXPLICIT_INLINE_P (clone) = DECL_EXPLICIT_INLINE_P (fn); /* LLVM LOCAL end inlinehint attribute */ DECL_COMDAT (clone) = DECL_COMDAT (fn); DECL_WEAK (clone) = DECL_WEAK (fn); DECL_ONE_ONLY (clone) = DECL_ONE_ONLY (fn); DECL_SECTION_NAME (clone) = DECL_SECTION_NAME (fn); DECL_USE_TEMPLATE (clone) = DECL_USE_TEMPLATE (fn); DECL_EXTERNAL (clone) = DECL_EXTERNAL (fn); DECL_INTERFACE_KNOWN (clone) = DECL_INTERFACE_KNOWN (fn); DECL_NOT_REALLY_EXTERN (clone) = DECL_NOT_REALLY_EXTERN (fn); TREE_PUBLIC (clone) = TREE_PUBLIC (fn); DECL_VISIBILITY (clone) = DECL_VISIBILITY (fn); DECL_VISIBILITY_SPECIFIED (clone) = DECL_VISIBILITY_SPECIFIED (fn); /* Adjust the parameter names and locations. */ parm = DECL_ARGUMENTS (fn); clone_parm = DECL_ARGUMENTS (clone); /* Update the `this' parameter, which is always first. */ update_cloned_parm (parm, clone_parm, first); parm = TREE_CHAIN (parm); clone_parm = TREE_CHAIN (clone_parm); if (DECL_HAS_IN_CHARGE_PARM_P (fn)) parm = TREE_CHAIN (parm); if (DECL_HAS_VTT_PARM_P (fn)) parm = TREE_CHAIN (parm); if (DECL_HAS_VTT_PARM_P (clone)) clone_parm = TREE_CHAIN (clone_parm); for (; parm; parm = TREE_CHAIN (parm), clone_parm = TREE_CHAIN (clone_parm)) /* Update this parameter. */ update_cloned_parm (parm, clone_parm, first); /* Start processing the function. */ start_preparsed_function (clone, NULL_TREE, SF_PRE_PARSED); /* Remap the parameters. */ decl_map = splay_tree_new (splay_tree_compare_pointers, NULL, NULL); for (parmno = 0, parm = DECL_ARGUMENTS (fn), clone_parm = DECL_ARGUMENTS (clone); parm; ++parmno, parm = TREE_CHAIN (parm)) { /* Map the in-charge parameter to an appropriate constant. */ if (DECL_HAS_IN_CHARGE_PARM_P (fn) && parmno == 1) { tree in_charge; in_charge = in_charge_arg_for_name (DECL_NAME (clone)); splay_tree_insert (decl_map, (splay_tree_key) parm, (splay_tree_value) in_charge); /* APPLE LOCAL ARM structor thunks */ info.in_charge_value [info.next_clone] = in_charge; } else if (DECL_ARTIFICIAL (parm) && DECL_NAME (parm) == vtt_parm_identifier) { /* For a subobject constructor or destructor, the next argument is the VTT parameter. Remap the VTT_PARM from the CLONE to this parameter. */ if (DECL_HAS_VTT_PARM_P (clone)) { DECL_ABSTRACT_ORIGIN (clone_parm) = parm; splay_tree_insert (decl_map, (splay_tree_key) parm, (splay_tree_value) clone_parm); clone_parm = TREE_CHAIN (clone_parm); } /* Otherwise, map the VTT parameter to `NULL'. */ else { splay_tree_insert (decl_map, (splay_tree_key) parm, (splay_tree_value) null_pointer_node); } } /* Map other parameters to their equivalents in the cloned function. */ else { splay_tree_insert (decl_map, (splay_tree_key) parm, (splay_tree_value) clone_parm); clone_parm = TREE_CHAIN (clone_parm); } } if (targetm.cxx.cdtor_returns_this ()) { parm = DECL_RESULT (fn); clone_parm = DECL_RESULT (clone); splay_tree_insert (decl_map, (splay_tree_key) parm, (splay_tree_value) clone_parm); } /* APPLE LOCAL begin ARM structor thunks */ clone_to_call = find_earlier_clone (&info); if (clone_to_call) /* Bodies are identical; replace later one with call to an earlier one. */ thunk_body (clone, fn, clone_to_call); else /* Clone the body. */ clone_body (clone, fn, decl_map); /* APPLE LOCAL end ARM structor thunks */ /* The clone can throw iff the original function can throw. */ cp_function_chain->can_throw = !TREE_NOTHROW (fn); /* Now, expand this function into RTL, if appropriate. */ finish_function (0); BLOCK_ABSTRACT_ORIGIN (DECL_INITIAL (clone)) = DECL_INITIAL (fn); expand_or_defer_fn (clone); first = false; /* APPLE LOCAL begin ARM structor thunks */ info.clones [info.next_clone] = clone; info.next_clone++; /* APPLE LOCAL end ARM structor thunks */ }
/* FN is a constructor or destructor, and there are FUNCTION_DECLs cloned from it nearby. Instead of cloning this body, leave it alone and create tiny one-call bodies for the cloned FUNCTION_DECLs. These clones are sibcall candidates, and their resulting code will be very thunk-esque. */ static void thunk_body (tree clone, tree fn, tree clone_to_call) { tree bind, block, call, fn_parm, fn_parm_typelist; int parmno, vtt_parmno; tree clone_parm, parmlist; for (vtt_parmno = -1, parmno = 0, fn_parm = DECL_ARGUMENTS (fn); fn_parm; ++parmno, fn_parm = TREE_CHAIN (fn_parm)) { if (DECL_ARTIFICIAL (fn_parm) && DECL_NAME (fn_parm) == vtt_parm_identifier) { vtt_parmno = parmno; /* Compensate for removed in_charge parameter. */ break; } } /* Currently, we are not supposed to have a vtt argument. */ gcc_assert(vtt_parmno == -1); /* Walk parameter lists together, creating parameter list for call to original function. */ for (parmno = 0, parmlist = NULL, fn_parm = DECL_ARGUMENTS (fn), fn_parm_typelist = TYPE_ARG_TYPES (TREE_TYPE (fn)), clone_parm = DECL_ARGUMENTS (clone); fn_parm; ++parmno, fn_parm = TREE_CHAIN (fn_parm)) { if (parmno == vtt_parmno && ! DECL_HAS_VTT_PARM_P (clone)) { tree typed_null_pointer_node = copy_node (null_pointer_node); gcc_assert (fn_parm_typelist); /* Clobber actual parameter with formal parameter type. */ TREE_TYPE (typed_null_pointer_node) = TREE_VALUE (fn_parm_typelist); parmlist = tree_cons (NULL, typed_null_pointer_node, parmlist); } else if (parmno == 1 && DECL_HAS_IN_CHARGE_PARM_P (fn)) { /* Just skip it. */ } /* Map other parameters to their equivalents in the cloned function. */ else { gcc_assert (clone_parm); DECL_ABSTRACT_ORIGIN (clone_parm) = NULL; parmlist = tree_cons (NULL, clone_parm, parmlist); clone_parm = TREE_CHAIN (clone_parm); } if (fn_parm_typelist) fn_parm_typelist = TREE_CHAIN (fn_parm_typelist); } /* We built this list backwards; fix now. */ parmlist = nreverse (parmlist); TREE_USED (clone_to_call) = 1; call = build_cxx_call (clone_to_call, parmlist); for (parmlist = TREE_OPERAND (call, 1); parmlist; parmlist = TREE_CHAIN (parmlist)) { fn_parm = TREE_VALUE (parmlist); /* Remove the EMPTY_CLASS_EXPR because it upsets estimate_num_insns(). */ if (TREE_CODE (fn_parm) == COMPOUND_EXPR) { gcc_assert (TREE_CODE (TREE_OPERAND (fn_parm, 1)) == EMPTY_CLASS_EXPR); TREE_VALUE (parmlist) = TREE_OPERAND (fn_parm, 0); } } block = make_node (BLOCK); if (targetm.cxx.cdtor_returns_this ()) { tree clone_result = DECL_RESULT (clone); tree modify = build2 (MODIFY_EXPR, TREE_TYPE (clone_result), clone_result, call); add_stmt (modify); BLOCK_VARS (block) = clone_result; } else { add_stmt (call); } bind = c_build_bind_expr (block, cur_stmt_list); DECL_SAVED_TREE (clone) = push_stmt_list (); add_stmt (bind); }
static unsigned int tree_nrv (void) { tree result = DECL_RESULT (current_function_decl); tree result_type = TREE_TYPE (result); tree found = NULL; basic_block bb; gimple_stmt_iterator gsi; struct nrv_data data; /* If this function does not return an aggregate type in memory, then there is nothing to do. */ if (!aggregate_value_p (result, current_function_decl)) return 0; /* If a GIMPLE type is returned in memory, finalize_nrv_r might create non-GIMPLE. */ if (is_gimple_reg_type (result_type)) return 0; /* Look through each block for assignments to the RESULT_DECL. */ FOR_EACH_BB (bb) { for (gsi = gsi_start_bb (bb); !gsi_end_p (gsi); gsi_next (&gsi)) { gimple stmt = gsi_stmt (gsi); tree ret_val; if (gimple_code (stmt) == GIMPLE_RETURN) { /* In a function with an aggregate return value, the gimplifier has changed all non-empty RETURN_EXPRs to return the RESULT_DECL. */ ret_val = gimple_return_retval (stmt); if (ret_val) gcc_assert (ret_val == result); } else if (is_gimple_assign (stmt) && gimple_assign_lhs (stmt) == result) { tree rhs; if (!gimple_assign_copy_p (stmt)) return 0; rhs = gimple_assign_rhs1 (stmt); /* Now verify that this return statement uses the same value as any previously encountered return statement. */ if (found != NULL) { /* If we found a return statement using a different variable than previous return statements, then we can not perform NRV optimizations. */ if (found != rhs) return 0; } else found = rhs; /* The returned value must be a local automatic variable of the same type and alignment as the function's result. */ if (TREE_CODE (found) != VAR_DECL || TREE_THIS_VOLATILE (found) || DECL_CONTEXT (found) != current_function_decl || TREE_STATIC (found) || TREE_ADDRESSABLE (found) || DECL_ALIGN (found) > DECL_ALIGN (result) || !useless_type_conversion_p (result_type, TREE_TYPE (found))) return 0; } else if (is_gimple_assign (stmt)) { tree addr = get_base_address (gimple_assign_lhs (stmt)); /* If there's any MODIFY of component of RESULT, then bail out. */ if (addr && addr == result) return 0; } } } if (!found) return 0; /* If dumping details, then note once and only the NRV replacement. */ if (dump_file && (dump_flags & TDF_DETAILS)) { fprintf (dump_file, "NRV Replaced: "); print_generic_expr (dump_file, found, dump_flags); fprintf (dump_file, " with: "); print_generic_expr (dump_file, result, dump_flags); fprintf (dump_file, "\n"); } /* At this point we know that all the return statements return the same local which has suitable attributes for NRV. Copy debugging information from FOUND to RESULT. */ DECL_NAME (result) = DECL_NAME (found); DECL_SOURCE_LOCATION (result) = DECL_SOURCE_LOCATION (found); DECL_ABSTRACT_ORIGIN (result) = DECL_ABSTRACT_ORIGIN (found); TREE_ADDRESSABLE (result) = TREE_ADDRESSABLE (found); /* Now walk through the function changing all references to VAR to be RESULT. */ data.var = found; data.result = result; FOR_EACH_BB (bb) { for (gsi = gsi_start_bb (bb); !gsi_end_p (gsi); ) { gimple stmt = gsi_stmt (gsi); /* If this is a copy from VAR to RESULT, remove it. */ if (gimple_assign_copy_p (stmt) && gimple_assign_lhs (stmt) == result && gimple_assign_rhs1 (stmt) == found) gsi_remove (&gsi, true); else { struct walk_stmt_info wi; memset (&wi, 0, sizeof (wi)); wi.info = &data; walk_gimple_op (stmt, finalize_nrv_r, &wi); gsi_next (&gsi); } } } /* FOUND is no longer used. Ensure it gets removed. */ var_ann (found)->used = 0; return 0; }