"perm_tree_lists",
"temp_tree_lists",
"vecs",
+ "binfos",
"phi_nodes",
"ssa names",
"random kinds",
tree type;
};
+/* Additional language-dependent binfo slots. */
+unsigned binfo_lang_slots;
+
/* Initial size of the hash table (rounded to next prime). */
#define TYPE_HASH_INITIAL_SIZE 1000
+ (PHI_ARG_CAPACITY (node) - 1) *
sizeof (struct phi_arg_d));
- case EPHI_NODE: return (sizeof (struct tree_ephi_node)
- + (EPHI_ARG_CAPACITY (node) - 1) *
- sizeof (struct ephi_arg_d));
-
case SSA_NAME: return sizeof (struct tree_ssa_name);
- case EUSE_NODE: return sizeof (struct tree_euse_node);
-
- case EKILL_NODE:
- case EEXIT_NODE: return sizeof (struct tree_eref_common);
case STATEMENT_LIST: return sizeof (struct tree_statement_list);
case BLOCK: return sizeof (struct tree_block);
+ case VALUE_HANDLE: return sizeof (struct tree_value_handle);
default:
return lang_hooks.tree_size (code);
#endif
struct tree_common ttmp;
- /* We can't allocate a TREE_VEC, PHI_NODE, EPHI_NODE or STRING_CST
+ /* We can't allocate a TREE_VEC, PHI_NODE, or STRING_CST
without knowing how many elements it will have. */
- if (code == TREE_VEC || code == PHI_NODE || code == EPHI_NODE)
+ if (code == TREE_VEC || code == PHI_NODE)
abort ();
TREE_SET_CODE ((tree)&ttmp, code);
kind = id_kind;
else if (code == TREE_VEC)
kind = vec_kind;
+ else if (code == TREE_BINFO)
+ kind = binfo_kind;
else if (code == PHI_NODE)
kind = phi_kind;
else if (code == SSA_NAME)
case INIT_EXPR:
case MODIFY_EXPR:
case VA_ARG_EXPR:
- case RTL_EXPR:
case PREDECREMENT_EXPR:
case PREINCREMENT_EXPR:
case POSTDECREMENT_EXPR:
return t;
}
+/* Build a BINFO with LEN language slots. */
+
+tree
+make_tree_binfo_stat (unsigned lang_slots MEM_STAT_DECL)
+{
+ tree t;
+ static unsigned length;
+
+ if (!length)
+ {
+ length = (offsetof (struct tree_binfo, lang_slots)
+ + (sizeof (((struct tree_binfo *)0)->lang_slots[0])
+ * lang_slots));
+ binfo_lang_slots = lang_slots;
+ }
+ else if (binfo_lang_slots != lang_slots)
+ abort ();
+
+#ifdef GATHER_STATISTICS
+ tree_node_counts[(int) binfo_kind]++;
+ tree_node_sizes[(int) binfo_kind] += length;
+#endif
+
+ t = ggc_alloc_zone_stat (length, tree_zone PASS_MEM_STAT);
+
+ memset (t, 0, length);
+
+ TREE_SET_CODE (t, TREE_BINFO);
+
+ return t;
+}
+
+
/* Build a newly constructed TREE_VEC node of length LEN. */
tree
if (contains_placeholder_p (inner))
return t;
- t = build3 (SAVE_EXPR, TREE_TYPE (expr), t, current_function_decl,
- NULL_TREE);
+ t = build1 (SAVE_EXPR, TREE_TYPE (expr), t);
/* This expression might be placed ahead of a jump to ensure that the
value was computed on both sides of the jump. So make sure it isn't
{
switch (code)
{
- case SAVE_EXPR:
- return 2;
- case GOTO_SUBROUTINE_EXPR:
- case RTL_EXPR:
- return 0;
- case WITH_CLEANUP_EXPR:
- return 2;
default:
return TREE_CODE_LENGTH (code);
}
case TREE_LIST: return TS_LIST;
case TREE_VEC: return TS_VEC;
case PHI_NODE: return TS_PHI_NODE;
- case EPHI_NODE: return TS_EPHI_NODE;
- case EUSE_NODE: return TS_EUSE_NODE;
- case EKILL_NODE: return TS_EREF_NODE;
- case EEXIT_NODE: return TS_EREF_NODE;
case SSA_NAME: return TS_SSA_NAME;
case PLACEHOLDER_EXPR: return TS_COMMON;
case STATEMENT_LIST: return TS_STATEMENT_LIST;
case BLOCK: return TS_BLOCK;
+ case TREE_BINFO: return TS_BINFO;
+ case VALUE_HANDLE: return TS_VALUE_HANDLE;
default:
abort ();
{
switch (TREE_CODE (expr))
{
- case SAVE_EXPR:
- if (! SAVE_EXPR_PERSISTENT_P (expr))
- SAVE_EXPR_RTL (expr) = 0;
- break;
-
case TARGET_EXPR:
/* Don't mess with a TARGET_EXPR that hasn't been expanded.
It's OK for this to happen if it was part of a subtree that
TREE_OPERAND (expr, 3) = NULL_TREE;
break;
- case RTL_EXPR:
- /* I don't yet know how to emit a sequence multiple times. */
- if (RTL_EXPR_SEQUENCE (expr) != 0)
- abort ();
- break;
-
default:
break;
}
SAVE_EXPRs basically *only* appear replicated in an expression tree,
occasionally across the whole of a function. It is therefore only
safe to unsave a SAVE_EXPR if you know that all occurrences appear
- below the UNSAVE_EXPR.
-
- RTL_EXPRs consume their rtl during evaluation. It is therefore
- never possible to unsave them. */
+ below the UNSAVE_EXPR. */
int
unsafe_for_reeval (tree expr)
switch (code)
{
case SAVE_EXPR:
- case RTL_EXPR:
return 2;
/* A label can only be emitted once. */
contains_placeholder_p (tree exp)
{
enum tree_code code;
- int result;
if (!exp)
return 0;
|| CONTAINS_PLACEHOLDER_P (TREE_OPERAND (exp, 1))
|| CONTAINS_PLACEHOLDER_P (TREE_OPERAND (exp, 2)));
- case SAVE_EXPR:
- /* If we already know this doesn't have a placeholder, don't
- check again. */
- if (SAVE_EXPR_NOPLACEHOLDER (exp) || SAVE_EXPR_RTL (exp) != 0)
- return 0;
-
- SAVE_EXPR_NOPLACEHOLDER (exp) = 1;
- result = CONTAINS_PLACEHOLDER_P (TREE_OPERAND (exp, 0));
- if (result)
- SAVE_EXPR_NOPLACEHOLDER (exp) = 0;
-
- return result;
-
default:
break;
}
switch (TREE_CODE (exp))
{
case TARGET_EXPR:
- case GOTO_SUBROUTINE_EXPR:
case WITH_CLEANUP_EXPR:
return 1;
}
return 0;
+ case DECL_EXPR:
+ return (DECL_INITIAL (DECL_EXPR_DECL (exp))
+ && has_cleanups (DECL_INITIAL (DECL_EXPR_DECL (exp))));
+
default:
break;
}
if (op0 == TREE_OPERAND (exp, 0))
return exp;
- new = fold (build2 (code, TREE_TYPE (exp), op0, TREE_OPERAND (exp, 1)));
+ new = fold (build (code, TREE_TYPE (exp), op0, TREE_OPERAND (exp, 1),
+ NULL_TREE));
}
else
switch (TREE_CODE_CLASS (code))
case COMPONENT_REF:
result = build_nt (COMPONENT_REF,
stabilize_reference (TREE_OPERAND (ref, 0)),
- TREE_OPERAND (ref, 1));
+ TREE_OPERAND (ref, 1), NULL_TREE);
break;
case BIT_FIELD_REF:
case ARRAY_REF:
result = build_nt (ARRAY_REF,
stabilize_reference (TREE_OPERAND (ref, 0)),
- stabilize_reference_1 (TREE_OPERAND (ref, 1)));
+ stabilize_reference_1 (TREE_OPERAND (ref, 1)),
+ TREE_OPERAND (ref, 2), TREE_OPERAND (ref, 3));
break;
case ARRAY_RANGE_REF:
result = build_nt (ARRAY_RANGE_REF,
stabilize_reference (TREE_OPERAND (ref, 0)),
- stabilize_reference_1 (TREE_OPERAND (ref, 1)));
+ stabilize_reference_1 (TREE_OPERAND (ref, 1)),
+ TREE_OPERAND (ref, 2), TREE_OPERAND (ref, 3));
break;
case COMPOUND_EXPR:
volatiles. */
return stabilize_reference_1 (ref);
- case RTL_EXPR:
- result = build1 (INDIRECT_REF, TREE_TYPE (ref),
- save_expr (build1 (ADDR_EXPR,
- build_pointer_type (TREE_TYPE (ref)),
- ref)));
- break;
-
/* If arg isn't a kind of lvalue we recognize, make no change.
Caller should recognize the error for an invalid lvalue. */
default:
\f
/* Low-level constructors for expressions. */
-/* A helper function for build1 and constant folders.
- Set TREE_CONSTANT and TREE_INVARIANT for an ADDR_EXPR. */
+/* A helper function for build1 and constant folders. Set TREE_CONSTANT,
+ TREE_INVARIANT, and TREE_SIDE_EFFECTS for an ADDR_EXPR. */
void
recompute_tree_invarant_for_addr_expr (tree t)
{
- tree node = TREE_OPERAND (t, 0);
- bool tc = false, ti = false;
+ tree node;
+ bool tc = true, ti = true, se = false;
- /* Addresses of constants and static variables are constant;
- all other decl addresses are invariant. */
- if (staticp (node))
- tc = ti = true;
- else
+ /* We started out assuming this address is both invariant and constant, but
+ does not have side effects. Now go down any handled components and see if
+ any of them involve offsets that are either non-constant or non-invariant.
+ Also check for side-effects.
+
+ ??? Note that this code makes no attempt to deal with the case where
+ taking the address of something causes a copy due to misalignment. */
+
+#define UPDATE_TITCSE(NODE) \
+do { tree _node = (NODE); \
+ if (_node && !TREE_INVARIANT (_node)) ti = false; \
+ if (_node && !TREE_CONSTANT (_node)) tc = false; \
+ if (_node && TREE_SIDE_EFFECTS (_node)) se = true; } while (0)
+
+ for (node = TREE_OPERAND (t, 0); handled_component_p (node);
+ node = TREE_OPERAND (node, 0))
{
- /* Step past constant offsets. */
- while (1)
+ /* If the first operand doesn't have an ARRAY_TYPE, this is a bogus
+ array reference (probably made temporarily by the G++ front end),
+ so ignore all the operands. */
+ if ((TREE_CODE (node) == ARRAY_REF
+ || TREE_CODE (node) == ARRAY_RANGE_REF)
+ && TREE_CODE (TREE_TYPE (TREE_OPERAND (node, 0))) == ARRAY_TYPE)
{
- if (TREE_CODE (node) == COMPONENT_REF
- && TREE_CODE (TREE_OPERAND (node, 1)) == FIELD_DECL
- && ! DECL_BIT_FIELD (TREE_OPERAND (node, 1)))
- ;
- else if (TREE_CODE (node) == ARRAY_REF
- && TREE_CONSTANT (TREE_OPERAND (node, 1)))
- ;
- else
- break;
- node = TREE_OPERAND (node, 0);
+ UPDATE_TITCSE (TREE_OPERAND (node, 1));
+ UPDATE_TITCSE (array_ref_low_bound (node));
+ UPDATE_TITCSE (array_ref_element_size (node));
}
- if (DECL_P (node))
- ti = true;
+ /* Likewise, just because this is a COMPONENT_REF doesn't mean we have a
+ FIELD_DECL, apparently. The G++ front end can put something else
+ there, at least temporarily. */
+ else if (TREE_CODE (node) == COMPONENT_REF
+ && TREE_CODE (TREE_OPERAND (node, 1)) == FIELD_DECL)
+ UPDATE_TITCSE (component_ref_field_offset (node));
+ else if (TREE_CODE (node) == BIT_FIELD_REF)
+ UPDATE_TITCSE (TREE_OPERAND (node, 2));
+ }
+
+ /* Now see what's inside. If it's an INDIRECT_REF, copy our properties from
+ it. If it's a decl, it's invariant and constant if the decl is static.
+ It's also invariant if it's a decl in the current function. (Taking the
+ address of a volatile variable is not volatile.) If it's a constant,
+ the address is both invariant and constant. Otherwise it's neither. */
+ if (TREE_CODE (node) == INDIRECT_REF)
+ UPDATE_TITCSE (node);
+ else if (DECL_P (node))
+ {
+ if (staticp (node))
+ ;
+ else if (decl_function_context (node) == current_function_decl)
+ tc = false;
+ else
+ ti = tc = false;
+ }
+ else if (TREE_CODE_CLASS (TREE_CODE (node)) == 'c')
+ ;
+ else
+ {
+ ti = tc = false;
+ se |= TREE_SIDE_EFFECTS (node);
}
TREE_CONSTANT (t) = tc;
TREE_INVARIANT (t) = ti;
+ TREE_SIDE_EFFECTS (t) = se;
+#undef UPDATE_TITCSE
}
/* Build an expression of code CODE, data type TYPE, and operands as
TREE_SET_CODE (t, code);
TREE_TYPE (t) = type;
+#ifdef USE_MAPPED_LOCATION
+ SET_EXPR_LOCATION (t, UNKNOWN_LOCATION);
+#else
SET_EXPR_LOCUS (t, NULL);
+#endif
TREE_COMPLEXITY (t) = 0;
TREE_OPERAND (t, 0) = node;
TREE_BLOCK (t) = NULL_TREE;
case INIT_EXPR:
case MODIFY_EXPR:
case VA_ARG_EXPR:
- case RTL_EXPR:
case PREDECREMENT_EXPR:
case PREINCREMENT_EXPR:
case POSTDECREMENT_EXPR:
case ADDR_EXPR:
if (node)
- {
- recompute_tree_invarant_for_addr_expr (t);
-
- /* The address of a volatile decl or reference does not have
- side-effects. But be careful not to ignore side-effects from
- other sources deeper in the expression--if node is a _REF and
- one of its operands has side-effects, so do we. */
- if (TREE_THIS_VOLATILE (node))
- {
- TREE_SIDE_EFFECTS (t) = 0;
- if (!DECL_P (node))
- {
- int i = first_rtl_op (TREE_CODE (node)) - 1;
- for (; i >= 0; --i)
- {
- if (TREE_SIDE_EFFECTS (TREE_OPERAND (node, i)))
- TREE_SIDE_EFFECTS (t) = 1;
- }
- }
- }
- }
+ recompute_tree_invarant_for_addr_expr (t);
break;
default:
TREE_CONSTANT (t) = 1;
if (TREE_CODE_CLASS (code) == '1' && node && TREE_INVARIANT (node))
TREE_INVARIANT (t) = 1;
+ if (TREE_CODE_CLASS (code) == 'r' && node && TREE_THIS_VOLATILE (node))
+ TREE_THIS_VOLATILE (t) = 1;
break;
}
TREE_CONSTANT (t) = constant;
TREE_INVARIANT (t) = invariant;
TREE_SIDE_EFFECTS (t) = side_effects;
+ TREE_THIS_VOLATILE (t)
+ = TREE_CODE_CLASS (code) == 'r' && arg0 && TREE_THIS_VOLATILE (arg0);
return t;
}
}
TREE_SIDE_EFFECTS (t) = side_effects;
+ TREE_THIS_VOLATILE (t)
+ = TREE_CODE_CLASS (code) == 'r' && arg0 && TREE_THIS_VOLATILE (arg0);
return t;
}
PROCESS_ARG(3);
TREE_SIDE_EFFECTS (t) = side_effects;
+ TREE_THIS_VOLATILE (t)
+ = TREE_CODE_CLASS (code) == 'r' && arg0 && TREE_THIS_VOLATILE (arg0);
return t;
}
return block;
}
+#if 1 /* ! defined(USE_MAPPED_LOCATION) */
+/* ??? gengtype doesn't handle conditionals */
static GTY(()) tree last_annotated_node;
+#endif
+
+#ifdef USE_MAPPED_LOCATION
+
+expanded_location
+expand_location (source_location loc)
+{
+ expanded_location xloc;
+ if (loc == 0) { xloc.file = NULL; xloc.line = 0; xloc.column = 0; }
+ else
+ {
+ const struct line_map *map = linemap_lookup (&line_table, loc);
+ xloc.file = map->to_file;
+ xloc.line = SOURCE_LINE (map, loc);
+ xloc.column = SOURCE_COLUMN (map, loc);
+ };
+ return xloc;
+}
+
+#else
/* Record the exact location where an expression or an identifier were
encountered. */
{
annotate_with_file_line (node, locus.file, locus.line);
}
+#endif
\f
/* Return a declaration like DDECL except that its DECL_ATTRIBUTES
is ATTRIBUTE. */
|| tree_int_cst_equal (TYPE_MAX_VALUE (a->type),
TYPE_MAX_VALUE (b->type)))
&& (TYPE_MIN_VALUE (a->type) == TYPE_MIN_VALUE (b->type)
- && tree_int_cst_equal (TYPE_MIN_VALUE (a->type),
+ || tree_int_cst_equal (TYPE_MIN_VALUE (a->type),
TYPE_MIN_VALUE (b->type))));
case OFFSET_TYPE:
case BIT_AND_EXPR:
case NE_EXPR:
case EQ_EXPR:
+ case UNORDERED_EXPR:
+ case ORDERED_EXPR:
+ case UNEQ_EXPR:
+ case LTGT_EXPR:
+ case TRUTH_AND_EXPR:
+ case TRUTH_XOR_EXPR:
+ case TRUTH_OR_EXPR:
return true;
default:
code = TREE_CODE (t);
class = TREE_CODE_CLASS (code);
- if (class == 'd')
+ if (class == 'd'
+ || TREE_CODE (t) == VALUE_HANDLE)
{
/* Decls we can just compare by pointer. */
val = iterative_hash_object (t, val);
val = iterative_hash_object (TREE_INT_CST_HIGH (t), val);
}
else if (code == REAL_CST)
- val = iterative_hash (TREE_REAL_CST_PTR (t),
- sizeof (REAL_VALUE_TYPE), val);
+ {
+ unsigned int val2 = real_hash (TREE_REAL_CST_PTR (t));
+
+ val = iterative_hash (&val2, sizeof (unsigned int), val);
+ }
else if (code == STRING_CST)
val = iterative_hash (TREE_STRING_POINTER (t),
TREE_STRING_LENGTH (t), val);
return itype;
}
+/* Builds a signed or unsigned integer type of precision PRECISION.
+ Used for C bitfields whose precision does not match that of
+ built-in target types. */
+tree
+build_nonstandard_integer_type (unsigned HOST_WIDE_INT precision,
+ int unsignedp)
+{
+ tree itype = make_node (INTEGER_TYPE);
+
+ TYPE_PRECISION (itype) = precision;
+
+ if (unsignedp)
+ fixup_unsigned_type (itype);
+ else
+ fixup_signed_type (itype);
+
+ if (host_integerp (TYPE_MAX_VALUE (itype), 1))
+ return type_hash_canon (tree_low_cst (TYPE_MAX_VALUE (itype), 1), itype);
+
+ return itype;
+}
+
/* Create a range of some discrete type TYPE (an INTEGER_TYPE,
ENUMERAL_TYPE, BOOLEAN_TYPE, or CHAR_TYPE), with
low bound LOWVAL and high bound HIGHVAL.
&& (for_type || ! DECL_BIT_FIELD (TREE_OPERAND (op, 1)))
&& (! uns || final_prec <= innerprec || unsignedp))
{
- win = build2 (COMPONENT_REF, type, TREE_OPERAND (op, 0),
- TREE_OPERAND (op, 1));
+ win = build3 (COMPONENT_REF, type, TREE_OPERAND (op, 0),
+ TREE_OPERAND (op, 1), NULL_TREE);
TREE_SIDE_EFFECTS (win) = TREE_SIDE_EFFECTS (op);
TREE_THIS_VOLATILE (win) = TREE_THIS_VOLATILE (op);
}
int uns = 0;
int first = 1;
tree win = op;
+ bool integral_p = INTEGRAL_TYPE_P (TREE_TYPE (op));
while (TREE_CODE (op) == NOP_EXPR)
{
uns = TYPE_UNSIGNED (TREE_TYPE (op));
first = 0;
op = TREE_OPERAND (op, 0);
+ /* Keep trying to narrow, but don't assign op to win if it
+ would turn an integral type into something else. */
+ if (INTEGRAL_TYPE_P (TREE_TYPE (op)) != integral_p)
+ continue;
}
win = op;
/* Since type_for_size always gives an integer type. */
&& TREE_CODE (TREE_TYPE (op)) != REAL_TYPE
/* Ensure field is laid out already. */
- && DECL_SIZE (TREE_OPERAND (op, 1)) != 0)
+ && DECL_SIZE (TREE_OPERAND (op, 1)) != 0
+ && host_integerp (DECL_SIZE (TREE_OPERAND (op, 1)), 1))
{
unsigned HOST_WIDE_INT innerprec
= tree_low_cst (DECL_SIZE (TREE_OPERAND (op, 1)), 1);
{
if (first)
uns = DECL_UNSIGNED (TREE_OPERAND (op, 1));
- win = build2 (COMPONENT_REF, type, TREE_OPERAND (op, 0),
- TREE_OPERAND (op, 1));
+ win = build3 (COMPONENT_REF, type, TREE_OPERAND (op, 0),
+ TREE_OPERAND (op, 1), NULL_TREE);
TREE_SIDE_EFFECTS (win) = TREE_SIDE_EFFECTS (op);
TREE_THIS_VOLATILE (win) = TREE_THIS_VOLATILE (op);
}
}
}
+/* Subprogram of following function. Called by walk_tree.
+
+ Return *TP if it is an automatic variable or parameter of the
+ function passed in as DATA. */
+
+static tree
+find_var_from_fn (tree *tp, int *walk_subtrees, void *data)
+{
+ tree fn = (tree) data;
+
+ if (TYPE_P (*tp))
+ *walk_subtrees = 0;
+
+ else if (DECL_P (*tp) && lang_hooks.tree_inlining.auto_var_in_fn_p (*tp, fn))
+ return *tp;
+
+ return NULL_TREE;
+}
+
/* Returns true if T is, contains, or refers to a type with variable
- size. This concept is more general than that of C99 'variably
- modified types': in C99, a struct type is never variably modified
- because a VLA may not appear as a structure member. However, in
- GNU C code like:
+ size. If FN is nonzero, only return true if a modifier of the type
+ or position of FN is a variable or parameter inside FN.
+
+ This concept is more general than that of C99 'variably modified types':
+ in C99, a struct type is never variably modified because a VLA may not
+ appear as a structure member. However, in GNU C code like:
struct S { int i[f()]; };
is valid, and other languages may define similar constructs. */
bool
-variably_modified_type_p (tree type)
+variably_modified_type_p (tree type, tree fn)
{
tree t;
+/* Test if T is either variable (if FN is zero) or an expression containing
+ a variable in FN. */
+#define RETURN_TRUE_IF_VAR(T) \
+ do { tree _t = (T); \
+ if (_t && _t != error_mark_node && TREE_CODE (_t) != INTEGER_CST \
+ && (!fn || walk_tree (&_t, find_var_from_fn, fn, NULL))) \
+ return true; } while (0)
+
if (type == error_mark_node)
return false;
We do not yet have a representation of the C99 '[*]' syntax.
When a representation is chosen, this function should be modified
to test for that case as well. */
- t = TYPE_SIZE (type);
- if (t && t != error_mark_node && TREE_CODE (t) != INTEGER_CST)
- return true;
+ RETURN_TRUE_IF_VAR (TYPE_SIZE (type));
+ RETURN_TRUE_IF_VAR (TYPE_SIZE_UNIT(type));
switch (TREE_CODE (type))
{
case ARRAY_TYPE:
case SET_TYPE:
case VECTOR_TYPE:
- if (variably_modified_type_p (TREE_TYPE (type)))
+ if (variably_modified_type_p (TREE_TYPE (type), fn))
return true;
break;
case METHOD_TYPE:
/* If TYPE is a function type, it is variably modified if any of the
parameters or the return type are variably modified. */
- if (variably_modified_type_p (TREE_TYPE (type)))
+ if (variably_modified_type_p (TREE_TYPE (type), fn))
return true;
for (t = TYPE_ARG_TYPES (type);
t && t != void_list_node;
t = TREE_CHAIN (t))
- if (variably_modified_type_p (TREE_VALUE (t)))
+ if (variably_modified_type_p (TREE_VALUE (t), fn))
return true;
break;
case CHAR_TYPE:
/* Scalar types are variably modified if their end points
aren't constant. */
- t = TYPE_MIN_VALUE (type);
- if (t && t != error_mark_node && TREE_CODE (t) != INTEGER_CST)
- return true;
-
- t = TYPE_MAX_VALUE (type);
- if (t && t != error_mark_node && TREE_CODE (t) != INTEGER_CST)
- return true;
+ RETURN_TRUE_IF_VAR (TYPE_MIN_VALUE (type));
+ RETURN_TRUE_IF_VAR (TYPE_MAX_VALUE (type));
break;
case RECORD_TYPE:
for (t = TYPE_FIELDS (type); t; t = TREE_CHAIN (t))
if (TREE_CODE (t) == FIELD_DECL)
{
- tree t1 = DECL_FIELD_OFFSET (t);
-
- if (t1 && t1 != error_mark_node && TREE_CODE (t1) != INTEGER_CST)
- return true;
+ RETURN_TRUE_IF_VAR (DECL_FIELD_OFFSET (t));
+ RETURN_TRUE_IF_VAR (DECL_SIZE (t));
+ RETURN_TRUE_IF_VAR (DECL_SIZE_UNIT (t));
- t1 = DECL_SIZE (t);
- if (t1 && t1 != error_mark_node && TREE_CODE (t1) != INTEGER_CST)
- return true;
+ if (TREE_CODE (type) == QUAL_UNION_TYPE)
+ RETURN_TRUE_IF_VAR (DECL_QUALIFIER (t));
}
break;
/* The current language may have other cases to check, but in general,
all other types are not variably modified. */
- return lang_hooks.tree_inlining.var_mod_type_p (type);
+ return lang_hooks.tree_inlining.var_mod_type_p (type, fn);
+
+#undef RETURN_TRUE_IF_VAR
}
/* Given a DECL or TYPE, return the scope in which it was declared, or
if (TREE_CODE (decl) == ERROR_MARK)
return 0;
- if (TREE_CODE (decl) == SAVE_EXPR)
- context = SAVE_EXPR_CONTEXT (decl);
-
/* C++ virtual functions use DECL_CONTEXT for the class of the vtable
where we look up the function at runtime. Such functions always take
a first argument of type 'pointer to real context'.
\f
#if defined ENABLE_TREE_CHECKING && (GCC_VERSION >= 2007)
-/* Complain that the tree code of NODE does not match the expected CODE.
- FILE, LINE, and FUNCTION are of the caller. */
+/* Complain that the tree code of NODE does not match the expected 0
+ terminated list of trailing codes. FILE, LINE, and FUNCTION are of
+ the caller. */
void
-tree_check_failed (const tree node, enum tree_code code, const char *file,
- int line, const char *function)
-{
+tree_check_failed (const tree node, const char *file,
+ int line, const char *function, ...)
+{
+ va_list args;
+ char *buffer;
+ unsigned length = 0;
+ int code;
+
+ va_start (args, function);
+ while ((code = va_arg (args, int)))
+ length += 4 + strlen (tree_code_name[code]);
+ va_end (args);
+ va_start (args, function);
+ buffer = alloca (length);
+ length = 0;
+ while ((code = va_arg (args, int)))
+ {
+ if (length)
+ {
+ strcpy (buffer + length, " or ");
+ length += 4;
+ }
+ strcpy (buffer + length, tree_code_name[code]);
+ length += strlen (tree_code_name[code]);
+ }
+ va_end (args);
+
internal_error ("tree check: expected %s, have %s in %s, at %s:%d",
- tree_code_name[code], tree_code_name[TREE_CODE (node)],
+ buffer, tree_code_name[TREE_CODE (node)],
function, trim_filename (file), line);
}
-/* Similar to above except that we allowed the code to be one of two
- different codes. */
+/* Complain that the tree code of NODE does match the expected 0
+ terminated list of trailing codes. FILE, LINE, and FUNCTION are of
+ the caller. */
void
-tree_check2_failed (const tree node, enum tree_code code1,
- enum tree_code code2, const char *file,
- int line, const char *function)
-{
- internal_error ("tree check: expected %s or %s, have %s in %s, at %s:%d",
- tree_code_name[code1], tree_code_name[code2],
- tree_code_name[TREE_CODE (node)],
- function, trim_filename (file), line);
-}
-
-/* Likewise for three different codes. */
-
-void
-tree_check3_failed (const tree node, enum tree_code code1,
- enum tree_code code2, enum tree_code code3,
- const char *file, int line, const char *function)
-{
- internal_error ("tree check: expected %s, %s or %s; have %s in %s, at %s:%d",
- tree_code_name[code1], tree_code_name[code2],
- tree_code_name[code3], tree_code_name[TREE_CODE (node)],
+tree_not_check_failed (const tree node, const char *file,
+ int line, const char *function, ...)
+{
+ va_list args;
+ char *buffer;
+ unsigned length = 0;
+ int code;
+
+ va_start (args, function);
+ while ((code = va_arg (args, int)))
+ length += 4 + strlen (tree_code_name[code]);
+ va_end (args);
+ va_start (args, function);
+ buffer = alloca (length);
+ length = 0;
+ while ((code = va_arg (args, int)))
+ {
+ if (length)
+ {
+ strcpy (buffer + length, " or ");
+ length += 4;
+ }
+ strcpy (buffer + length, tree_code_name[code]);
+ length += strlen (tree_code_name[code]);
+ }
+ va_end (args);
+
+ internal_error ("tree check: expected none of %s, have %s in %s, at %s:%d",
+ buffer, tree_code_name[TREE_CODE (node)],
function, trim_filename (file), line);
}
-/* ... and for four different codes. */
-
-void
-tree_check4_failed (const tree node, enum tree_code code1,
- enum tree_code code2, enum tree_code code3,
- enum tree_code code4, const char *file, int line,
- const char *function)
-{
- internal_error
- ("tree check: expected %s, %s, %s or %s; have %s in %s, at %s:%d",
- tree_code_name[code1], tree_code_name[code2], tree_code_name[code3],
- tree_code_name[code4], tree_code_name[TREE_CODE (node)], function,
- trim_filename (file), line);
-}
-
-/* ... and for five different codes. */
-
-void
-tree_check5_failed (const tree node, enum tree_code code1,
- enum tree_code code2, enum tree_code code3,
- enum tree_code code4, enum tree_code code5,
- const char *file, int line, const char *function)
-{
- internal_error
- ("tree check: expected %s, %s, %s, %s or %s; have %s in %s, at %s:%d",
- tree_code_name[code1], tree_code_name[code2], tree_code_name[code3],
- tree_code_name[code4], tree_code_name[code5],
- tree_code_name[TREE_CODE (node)], function, trim_filename (file), line);
-}
-
/* Similar to tree_check_failed, except that we check for a class of tree
code, given in CL. */
idx + 1, len, function, trim_filename (file), line);
}
-/* Similar to above, except that the check is for the bounds of a EPHI_NODE's
- (dynamically sized) vector. */
-
-void
-ephi_node_elt_check_failed (int idx, int len, const char *file, int line,
- const char *function)
-{
- internal_error
- ("tree check: accessed elt %d of ephi_node with %d elts in %s, at %s:%d",
- idx + 1, len, function, trim_filename (file), line);
-}
-
/* Similar to above, except that the check is for the bounds of a PHI_NODE's
(dynamically sized) vector. */
ptr_type_node = build_pointer_type (void_type_node);
const_ptr_type_node
= build_pointer_type (build_type_variant (void_type_node, 1, 0));
+ fileptr_type_node = ptr_type_node;
float_type_node = make_node (REAL_TYPE);
TYPE_PRECISION (float_type_node) = FLOAT_TYPE_SIZE;
return build1 (NOP_EXPR, void_type_node, size_zero_node);
}
+
+/* Returns true if it is possible to prove that the index of
+ an array access REF (an ARRAY_REF expression) falls into the
+ array bounds. */
+
bool
-is_essa_node (tree t)
+in_array_bounds_p (tree ref)
{
- if (TREE_CODE (t) == EPHI_NODE || TREE_CODE (t) == EUSE_NODE
- || TREE_CODE (t) == EEXIT_NODE || TREE_CODE (t) == EKILL_NODE)
- return true;
- return false;
-}
+ tree idx = TREE_OPERAND (ref, 1);
+ tree min, max;
+ if (TREE_CODE (idx) != INTEGER_CST)
+ return false;
+
+ min = array_ref_low_bound (ref);
+ max = array_ref_up_bound (ref);
+ if (!min
+ || !max
+ || TREE_CODE (min) != INTEGER_CST
+ || TREE_CODE (max) != INTEGER_CST)
+ return false;
+
+ if (tree_int_cst_lt (idx, min)
+ || tree_int_cst_lt (max, idx))
+ return false;
+
+ return true;
+}
/* Return true if T (assumed to be a DECL) must be assigned a memory
location. */
|| decl_function_context (t) != current_function_decl);
}
+/* There are situations in which a language considers record types
+ compatible which have different field lists. Decide if two fields
+ are compatible. It is assumed that the parent records are compatible. */
+
+bool
+fields_compatible_p (tree f1, tree f2)
+{
+ if (!operand_equal_p (DECL_FIELD_BIT_OFFSET (f1),
+ DECL_FIELD_BIT_OFFSET (f2), OEP_ONLY_CONST))
+ return false;
+
+ if (!operand_equal_p (DECL_FIELD_OFFSET (f1),
+ DECL_FIELD_OFFSET (f2), OEP_ONLY_CONST))
+ return false;
+
+ if (!lang_hooks.types_compatible_p (TREE_TYPE (f1), TREE_TYPE (f2)))
+ return false;
+
+ return true;
+}
+
+/* Locate within RECORD a field that is compatible with ORIG_FIELD. */
+
+tree
+find_compatible_field (tree record, tree orig_field)
+{
+ tree f;
+
+ for (f = TYPE_FIELDS (record); f ; f = TREE_CHAIN (f))
+ if (TREE_CODE (f) == FIELD_DECL
+ && fields_compatible_p (f, orig_field))
+ return f;
+
+ /* ??? Why isn't this on the main fields list? */
+ f = TYPE_VFIELD (record);
+ if (f && TREE_CODE (f) == FIELD_DECL
+ && fields_compatible_p (f, orig_field))
+ return f;
+
+ /* ??? We should abort here, but Java appears to do Bad Things
+ with inherited fields. */
+ return orig_field;
+}
+
+/* Return value of a constant X. */
+
+HOST_WIDE_INT
+int_cst_value (tree x)
+{
+ unsigned bits = TYPE_PRECISION (TREE_TYPE (x));
+ unsigned HOST_WIDE_INT val = TREE_INT_CST_LOW (x);
+ bool negative = ((val >> (bits - 1)) & 1) != 0;
+
+ if (bits > HOST_BITS_PER_WIDE_INT)
+ abort ();
+
+ if (negative)
+ val |= (~(unsigned HOST_WIDE_INT) 0) << (bits - 1) << 1;
+ else
+ val &= ~((~(unsigned HOST_WIDE_INT) 0) << (bits - 1) << 1);
+
+ return val;
+}
+
+/* Returns the greatest common divisor of A and B, which must be
+ INTEGER_CSTs. */
+
+tree
+tree_fold_gcd (tree a, tree b)
+{
+ tree a_mod_b;
+ tree type = TREE_TYPE (a);
+
+#if defined ENABLE_CHECKING
+ if (TREE_CODE (a) != INTEGER_CST
+ || TREE_CODE (b) != INTEGER_CST)
+ abort ();
+#endif
+
+ if (integer_zerop (a))
+ return b;
+
+ if (integer_zerop (b))
+ return a;
+
+ if (tree_int_cst_sgn (a) == -1)
+ a = fold (build (MULT_EXPR, type, a,
+ convert (type, integer_minus_one_node)));
+
+ if (tree_int_cst_sgn (b) == -1)
+ b = fold (build (MULT_EXPR, type, b,
+ convert (type, integer_minus_one_node)));
+
+ while (1)
+ {
+ a_mod_b = fold (build (CEIL_MOD_EXPR, type, a, b));
+
+ if (!TREE_INT_CST_LOW (a_mod_b)
+ && !TREE_INT_CST_HIGH (a_mod_b))
+ return b;
+
+ a = b;
+ b = a_mod_b;
+ }
+}
+
#include "gt-tree.h"
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