+/*
+ * Project: libFIRM
+ * File name: ir/tr/trvrfy.c
+ * Purpose: Check types and entities for correctness.
+ * Author: Michael Beck, Goetz Lindenmaier
+ * Modified by:
+ * Created: 29.1.2003
+ * CVS-ID: $Id$
+ * Copyright: (c) 2003 Universität Karlsruhe
+ * Licence: This file protected by GPL - GNU GENERAL PUBLIC LICENSE.
+ */
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
#include "trvrfy.h"
+#include "irgraph_t.h" /* for checking whether constant code is allocated
+ on proper obstack */
+#include "irflag_t.h"
+#include "irprintf.h"
+#include "irgwalk.h"
+#include "typewalk.h"
-static int check_class(type *tp) {
+static const char *firm_vrfy_failure_msg;
+
+#ifdef NDEBUG
+/*
+ * in RELEASE mode, returns ret if the expression expr evaluates to zero
+ * in ASSERT mode, asserts the expression expr (and the string string).
+ */
+#define ASSERT_AND_RET(expr, string, ret) if (!(expr)) return (ret)
+
+/*
+ * in RELEASE mode, returns ret if the expression expr evaluates to zero
+ * in ASSERT mode, executes blk if the expression expr evaluates to zero and asserts expr
+ */
+#define ASSERT_AND_RET_DBG(expr, string, ret, blk) if (!(expr)) return (ret)
+#else
+#define ASSERT_AND_RET(expr, string, ret) \
+do { \
+ if (opt_do_node_verification == FIRM_VERIFICATION_ON) {\
+ assert((expr) && string); } \
+ if (!(expr)) { \
+ if (opt_do_node_verification == FIRM_VERIFICATION_REPORT) \
+ fprintf(stderr, #expr " : " string "\n"); \
+ firm_vrfy_failure_msg = #expr " && " string; \
+ return (ret); \
+ } \
+} while(0)
+
+#define ASSERT_AND_RET_DBG(expr, string, ret, blk) \
+do { \
+ if (!(expr)) { \
+ firm_vrfy_failure_msg = #expr " && " string; \
+ if (opt_do_node_verification != FIRM_VERIFICATION_ERROR_ONLY) { blk; } \
+ if (opt_do_node_verification == FIRM_VERIFICATION_REPORT) \
+ fprintf(stderr, #expr " : " string "\n"); \
+ else if (opt_do_node_verification == FIRM_VERIFICATION_ON) { \
+ assert((expr) && string); \
+ } \
+ return (ret); \
+ } \
+} while(0)
+
+#endif /* NDEBUG */
+
+/**
+ * Show diagnostic if an entity overwrites another one not
+ * in direct superclasses.
+ */
+static void show_ent_not_supertp(entity *ent, entity *ovw)
+{
+ ir_type *owner = get_entity_owner(ent);
+ ir_type *ov_own = get_entity_owner(ovw);
+ int i;
+
+ fprintf(stderr, "Type verification error:\n");
+ ir_fprintf(stderr, "Entity %+F::%+e owerwrites ", owner, ent);
+ ir_fprintf(stderr, "Entity %+F::%+e\n", ov_own, ovw);
+
+ ir_fprintf(stderr, "Supertypes of %+F:\n", owner);
+ for (i = 0; i < get_class_n_supertypes(owner); ++i) {
+ ir_type *super = get_class_supertype(owner, i);
+ ir_fprintf(stderr, " %+F:\n", super);
+ }
+}
+
+/**
+ * Show diagnostic if an entity overwrites a wrong number of things.
+ */
+static void show_ent_overwrite_cnt(entity *ent)
+{
+ ir_type *owner = get_entity_owner(ent);
+ int i, j, k, found, show_stp = 0;
+
+ fprintf(stderr, "Type verification error:\n");
+ ir_fprintf(stderr, "Entity %t::%e owerwrites\n", owner, ent);
+ for (i = 0; i < get_entity_n_overwrites(ent); ++i) {
+ entity *ovw = get_entity_overwrites(ent, i);
+ ir_type *ov_own = get_entity_owner(ovw);
+
+ ir_fprintf(stderr, " %t::%e\n", ov_own, ovw);
+ for (k = 0; k < i; ++k)
+ if (ovw == get_entity_overwrites(ent, k)) {
+ ir_fprintf(stderr, " ->%t::%e entered more than once\n", ov_own, ovw);
+ break;
+ }
+
+ found = 0;
+ for (j = get_class_n_supertypes(owner) - 1; j >= 0; --j) {
+ if (ov_own == get_class_supertype(owner, j)) {
+ show_stp = found = 1;
+ break;
+ }
+ }
+ if (! found)
+ ir_fprintf(stderr, " ->%t not in super types of %t\n", ov_own, owner);
+ }
+
+ if (show_stp) {
+ ir_fprintf(stderr, "Supertypes of %t:\n", owner);
+ for (i = 0; i < get_class_n_supertypes(owner); ++i) {
+ ir_type *super = get_class_supertype(owner, i);
+ ir_fprintf(stderr, " %t:\n", super);
+ }
+ }
+}
+
+/**
+ * Check a class
+ */
+static int check_class(ir_type *tp) {
int i, j, k;
int found;
- //printf("\n"); DDMT(tp);
-
- for (i = 0; i < get_class_n_members(tp); i++) {
+ /*printf("\n"); DDMT(tp);*/
+ for (i = get_class_n_members(tp) - 1; i >= 0; --i) {
entity *mem = get_class_member(tp, i);
- assert(mem && "NULL members not allowed");
- //printf(" %d, %d", get_entity_n_overwrites(mem), get_class_n_supertypes(tp)); DDME(mem);
- if (!mem) return error_null_mem;
- assert(get_entity_n_overwrites(mem) <= get_class_n_supertypes(tp));
- for (j = 0; j < get_entity_n_overwrites(mem); j++) {
+
+ ASSERT_AND_RET_DBG(
+ tp == get_entity_owner(mem),
+ "class member with wrong owner",
+ error_ent_wrong_owner,
+ ir_fprintf(stderr, "Type verification error:\n%+F %+e(owner %+F)\n",tp, mem, get_entity_owner(mem))
+ );
+ ASSERT_AND_RET_DBG(
+ mem,
+ "NULL members not allowed",
+ error_null_mem,
+ ir_fprintf(stderr, "Type verification error:\n%+F member %d is NULL\n", tp, i)
+ );
+
+ ASSERT_AND_RET_DBG(
+ get_entity_n_overwrites(mem) <= get_class_n_supertypes(tp),
+ "wrong number of entity overwrites",
+ error_wrong_ent_overwrites,
+ show_ent_overwrite_cnt(mem)
+ );
+
+ for (j = get_entity_n_overwrites(mem) - 1; j >= 0; --j) {
entity *ovw = get_entity_overwrites(mem, j);
- //printf(" overwrites: "); DDME(ovw);
+ /*printf(" overwrites: "); DDME(ovw);*/
/* Check whether ovw is member of one of tp's supertypes. If so,
- the representation is correct. */
- found = false;
- for (k = 0; k < get_class_n_supertypes(tp); k++) {
- if (get_class_member_index(get_class_supertype(tp, k), ovw) >= 0) {
- found = true;
- break;
- }
- }
- if (!found) {
- DDMT(tp); DDME(mem);
- assert(found && "overwrites an entity not contained in direct supertype");
- return error_ent_not_cont;
+ the representation is correct. */
+ found = 0;
+ for (k = get_class_n_supertypes(tp) - 1; k >= 0; --k) {
+ if (get_class_member_index(get_class_supertype(tp, k), ovw) >= 0) {
+ found = 1;
+ break;
+ }
}
+ ASSERT_AND_RET_DBG(
+ found,
+ "overwrites an entity not contained in direct supertype",
+ error_ent_not_cont,
+ show_ent_not_supertp(mem, ovw)
+ );
}
+ }
+ return 0;
+}
+/**
+ * Check an array.
+ */
+static int check_array(ir_type *tp) {
+ int i, n_dim = get_array_n_dimensions(tp);
+ for (i = 0; i < n_dim; ++i) {
+ ASSERT_AND_RET_DBG(
+ has_array_lower_bound(tp, i) || has_array_upper_bound(tp, i),
+ "array bound missing",
+ 1,
+ ir_fprintf(stderr, "%+F in dimension %d\n", tp, i)
+ );
}
return 0;
}
-static int check_type(type *tp) {
+
+/**
+ * Check a primitive.
+ */
+static int check_primitive(ir_type *tp) {
+ ASSERT_AND_RET_DBG(
+ is_mode(get_type_mode(tp)),
+ "Primitive type without mode",
+ 1,
+ ir_fprintf(stderr, "%+F\n", tp)
+ );
+ return 0;
+}
+
+
+/*
+ * Checks a type.
+ *
+ * return
+ * 0 if no error encountered
+ */
+int check_type(ir_type *tp) {
switch (get_type_tpop_code(tp)) {
case tpo_class:
return check_class(tp);
+ case tpo_array:
+ return check_array(tp);
+ case tpo_primitive:
+ return check_primitive(tp);
default: break;
}
return 0;
}
+/**
+ * checks the visited flag
+ */
+static int check_visited_flag(ir_graph *irg, ir_node *n) {
+ ASSERT_AND_RET_DBG(
+ get_irn_visited(n) <= get_irg_visited(irg),
+ "Visited flag of node is larger than that of corresponding irg.",
+ 0,
+ ir_fprintf(stderr, "%+F in %+F\n", n, irg)
+ );
+ return 1;
+}
+
+/**
+ * helper environment struct for constant_on_wrong_obstack()
+ */
+struct myenv {
+ int res;
+ ir_graph *irg;
+};
+
+/**
+ * called by the walker
+ */
+static void on_irg_storage(ir_node *n, void *env) {
+ struct myenv *myenv = env;
+
+ /* We also test whether the setting of the visited flag is legal. */
+ myenv->res = node_is_in_irgs_storage(myenv->irg, n) &&
+ check_visited_flag(myenv->irg, n);
+}
+
+/**
+ * checks whether a given constant IR node is NOT on the
+ * constant IR graph.
+ */
+static int constant_on_wrong_irg(ir_node *n) {
+ struct myenv env;
-static int check_entity(entity *ent) {
+ env.res = 1; /* on right obstack */
+ env.irg = get_const_code_irg();
+
+ irg_walk(n, on_irg_storage, NULL, (void *)&env);
+ return ! env.res;
+}
+
+/**
+ * Check if constants node are NOT on the constant IR graph.
+ *
+ * @return NON-zero if an entity initializer constant is NOT on
+ * the current_ir_graph's obstack.
+ */
+static int constants_on_wrong_irg(entity *ent) {
+ if (get_entity_variability(ent) == variability_uninitialized) return 0;
+
+ if (is_compound_entity(ent)) {
+ int i;
+ for (i = 0; i < get_compound_ent_n_values(ent); i++) {
+ if (constant_on_wrong_irg(get_compound_ent_value(ent, i)))
+ return 1;
+ }
+ } else {
+ /* Might not be set if entity belongs to a description or is external allocated. */
+ if (get_atomic_ent_value(ent))
+ return constant_on_wrong_irg(get_atomic_ent_value(ent));
+ else if (get_entity_visibility(ent) != visibility_external_allocated) {
+ ASSERT_AND_RET_DBG(
+ is_Class_type(get_entity_owner(ent)) &&
+ get_class_peculiarity(get_entity_owner(ent)) == peculiarity_description,
+ "Value in constant atomic entity not set.",
+ 0,
+ ir_fprintf(stderr, "%+e, owner %+F\n", ent, get_entity_owner(ent))
+ );
+ }
+ }
return 0;
}
+/**
+ * Shows a wrong entity allocation
+ */
+static void show_ent_alloc_error(entity *ent)
+{
+ ir_fprintf(stderr, "%+e owner %t has allocation %s\n",
+ ent, get_entity_type(ent),
+ get_allocation_name(get_entity_allocation(ent)));
+}
+
+/*
+ * Check an entity. Currently, we check only if initialized constants
+ * are build on the const irg graph.
+ *
+ * @return
+ * 0 if no error encountered
+ * != 0 a trvrfy_error_codes code
+ */
+int check_entity(entity *ent) {
+ int rem_vpi;
+ ir_type *tp = get_entity_type(ent);
+ ir_type *owner = get_entity_owner(ent);
+
+ current_ir_graph = get_const_code_irg();
+ ASSERT_AND_RET_DBG(
+ constants_on_wrong_irg(ent) == 0,
+ "Contants placed on wrong IRG",
+ error_const_on_wrong_irg,
+ ir_fprintf(stderr, "%+e not on %+F\n", ent, current_ir_graph));
+
+ rem_vpi = get_visit_pseudo_irgs();
+ set_visit_pseudo_irgs(1);
+ if ((get_entity_peculiarity(ent) == peculiarity_existent) &&
+ (get_entity_visibility(ent) != visibility_external_allocated) &&
+ (is_Method_type(get_entity_type(ent))) &&
+ (!get_entity_irg(ent) || !(is_ir_graph(get_entity_irg(ent))))) {
+ ASSERT_AND_RET_DBG(
+ 0,
+ "Method ents with pec_exist must have an irg",
+ error_existent_entity_without_irg,
+ ir_fprintf(stderr, "%+e\n", ent)
+ );
+ }
+ set_visit_pseudo_irgs(rem_vpi);
+
+ /* Originally, this test assumed, that only method entities have
+ pecularity_inherited. As I changed this, I have to test for method type before
+ doing the test. */
+ if (get_entity_peculiarity(ent) == peculiarity_inherited) {
+ if (is_Method_type(get_entity_type(ent))) {
+ entity *impl = get_SymConst_entity(get_atomic_ent_value(ent));
+ ASSERT_AND_RET_DBG(
+ get_entity_peculiarity(impl) == peculiarity_existent,
+ "inherited method entities must have constant pointing to existent entity.",
+ error_inherited_ent_without_const,
+ ir_fprintf(stderr, "%+e points to %+e\n", ent, impl)
+ );
+ }
+ }
+
+ /* Entities in global type are not dynamic or automatic allocated. */
+ if (owner == get_glob_type()) {
+ ASSERT_AND_RET_DBG(
+ get_entity_allocation(ent) != allocation_dynamic &&
+ get_entity_allocation(ent) != allocation_automatic,
+ "Entities in global type are not allowed to by dynamic or automatic allocated",
+ error_glob_ent_allocation,
+ show_ent_alloc_error(ent)
+ );
+ }
+
+ if (get_entity_variability(ent) != variability_uninitialized) {
+ if (is_atomic_type(tp)) {
+ ir_node *val = get_atomic_ent_value(ent);
+ if (val)
+ ASSERT_AND_RET_DBG(
+ get_irn_mode(val) == get_type_mode(tp),
+ "Mode of constant in entity must match type.",
+ error_ent_const_mode,
+ ir_fprintf(stderr, "%+e const %+F, type %+F(%+F)\n",
+ ent, val, tp, get_type_mode(tp))
+ );
+ }
+ }
+ return no_error;
+}
+
+/*
+ * check types and entities
+ */
static void check_tore(type_or_ent *tore, void *env) {
int *res = env;
+ assert(tore);
if (is_type(tore)) {
- *res = check_type((type *)tore);
+ *res = check_type((ir_type *)tore);
} else {
assert(is_entity(tore));
*res = check_entity((entity *)tore);
}
}
-
+/*
+ * Verify types and entities.
+ */
int tr_vrfy(void) {
int res;
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