#include "print-tree.h"
#include "ipa-utils.h"
#include "selftest.h"
+#include "stringpool.h"
+#include "attribs.h"
/* Tree code classes. */
/* Unique id for next decl created. */
static GTY(()) int next_decl_uid;
/* Unique id for next type created. */
-static GTY(()) int next_type_uid = 1;
+static GTY(()) unsigned next_type_uid = 1;
/* Unique id for next debug decl created. Use negative numbers,
to catch erroneous uses. */
static GTY(()) int next_debug_decl_uid;
static void print_type_hash_statistics (void);
static void print_debug_expr_statistics (void);
static void print_value_expr_statistics (void);
-static void type_hash_list (const_tree, inchash::hash &);
-static void attribute_hash_list (const_tree, inchash::hash &);
tree global_trees[TI_MAX];
tree integer_types[itk_none];
1, /* OMP_CLAUSE_NUM_GANGS */
1, /* OMP_CLAUSE_NUM_WORKERS */
1, /* OMP_CLAUSE_VECTOR_LENGTH */
- 1, /* OMP_CLAUSE_TILE */
+ 3, /* OMP_CLAUSE_TILE */
2, /* OMP_CLAUSE__GRIDDIM_ */
};
Achoo! I got a code in the node. */
tree
-make_node_stat (enum tree_code code MEM_STAT_DECL)
+make_node (enum tree_code code MEM_STAT_DECL)
{
tree t;
enum tree_code_class type = TREE_CODE_CLASS (code);
TREE_CHAIN, if it has one, is zero and it has a fresh uid. */
tree
-copy_node_stat (tree node MEM_STAT_DECL)
+copy_node (tree node MEM_STAT_DECL)
{
tree t;
enum tree_code code = TREE_CODE (node);
/* Build a newly constructed VECTOR_CST node of length LEN. */
tree
-make_vector_stat (unsigned len MEM_STAT_DECL)
+make_vector (unsigned len MEM_STAT_DECL)
{
tree t;
unsigned length = (len - 1) * sizeof (tree) + sizeof (struct tree_vector);
are in a list pointed to by VALS. */
tree
-build_vector_stat (tree type, tree *vals MEM_STAT_DECL)
+build_vector (tree type, tree *vals MEM_STAT_DECL)
{
int over = 0;
unsigned cnt = 0;
/* Build a BINFO with LEN language slots. */
tree
-make_tree_binfo_stat (unsigned base_binfos MEM_STAT_DECL)
+make_tree_binfo (unsigned base_binfos MEM_STAT_DECL)
{
tree t;
size_t length = (offsetof (struct tree_binfo, base_binfos)
The latter determines the length of the HOST_WIDE_INT vector. */
tree
-make_int_cst_stat (int len, int ext_len MEM_STAT_DECL)
+make_int_cst (int len, int ext_len MEM_STAT_DECL)
{
tree t;
int length = ((ext_len - 1) * sizeof (HOST_WIDE_INT)
/* Build a newly constructed TREE_VEC node of length LEN. */
tree
-make_tree_vec_stat (int len MEM_STAT_DECL)
+make_tree_vec (int len MEM_STAT_DECL)
{
tree t;
- int length = (len - 1) * sizeof (tree) + sizeof (struct tree_vec);
+ size_t length = (len - 1) * sizeof (tree) + sizeof (struct tree_vec);
record_node_allocation_statistics (TREE_VEC, length);
/* Grow a TREE_VEC node to new length LEN. */
tree
-grow_tree_vec_stat (tree v, int len MEM_STAT_DECL)
+grow_tree_vec (tree v, int len MEM_STAT_DECL)
{
gcc_assert (TREE_CODE (v) == TREE_VEC);
int oldlen = TREE_VEC_LENGTH (v);
gcc_assert (len > oldlen);
- int oldlength = (oldlen - 1) * sizeof (tree) + sizeof (struct tree_vec);
- int length = (len - 1) * sizeof (tree) + sizeof (struct tree_vec);
+ size_t oldlength = (oldlen - 1) * sizeof (tree) + sizeof (struct tree_vec);
+ size_t length = (len - 1) * sizeof (tree) + sizeof (struct tree_vec);
record_node_allocation_statistics (TREE_VEC, length - oldlength);
purpose and value fields are PARM and VALUE. */
tree
-build_tree_list_stat (tree parm, tree value MEM_STAT_DECL)
+build_tree_list (tree parm, tree value MEM_STAT_DECL)
{
- tree t = make_node_stat (TREE_LIST PASS_MEM_STAT);
+ tree t = make_node (TREE_LIST PASS_MEM_STAT);
TREE_PURPOSE (t) = parm;
TREE_VALUE (t) = value;
return t;
/* Build a chain of TREE_LIST nodes from a vector. */
tree
-build_tree_list_vec_stat (const vec<tree, va_gc> *vec MEM_STAT_DECL)
+build_tree_list_vec (const vec<tree, va_gc> *vec MEM_STAT_DECL)
{
tree ret = NULL_TREE;
tree *pp = &ret;
tree t;
FOR_EACH_VEC_SAFE_ELT (vec, i, t)
{
- *pp = build_tree_list_stat (NULL, t PASS_MEM_STAT);
+ *pp = build_tree_list (NULL, t PASS_MEM_STAT);
pp = &TREE_CHAIN (*pp);
}
return ret;
and whose TREE_CHAIN is CHAIN. */
tree
-tree_cons_stat (tree purpose, tree value, tree chain MEM_STAT_DECL)
+tree_cons (tree purpose, tree value, tree chain MEM_STAT_DECL)
{
tree node;
tree
save_expr (tree expr)
{
- tree t = fold (expr);
tree inner;
/* If the tree evaluates to a constant, then we don't want to hide that
However, a read-only object that has side effects cannot be bypassed.
Since it is no problem to reevaluate literals, we just return the
literal node. */
- inner = skip_simple_arithmetic (t);
+ inner = skip_simple_arithmetic (expr);
if (TREE_CODE (inner) == ERROR_MARK)
return inner;
if (tree_invariant_p_1 (inner))
- return t;
+ return expr;
/* If INNER contains a PLACEHOLDER_EXPR, we must evaluate it each time, since
it means that the size or offset of some field of an object depends on
the value within another field.
- Note that it must not be the case that T contains both a PLACEHOLDER_EXPR
+ Note that it must not be the case that EXPR contains both a PLACEHOLDER_EXPR
and some variable since it would then need to be both evaluated once and
evaluated more than once. Front-ends must assure this case cannot
happen by surrounding any such subexpressions in their own SAVE_EXPR
and forcing evaluation at the proper time. */
if (contains_placeholder_p (inner))
- return t;
+ return expr;
- t = build1 (SAVE_EXPR, TREE_TYPE (expr), t);
- SET_EXPR_LOCATION (t, EXPR_LOCATION (expr));
+ expr = build1_loc (EXPR_LOCATION (expr), SAVE_EXPR, TREE_TYPE (expr), expr);
/* 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
eliminated as dead. */
- TREE_SIDE_EFFECTS (t) = 1;
- return t;
+ TREE_SIDE_EFFECTS (expr) = 1;
+ return expr;
}
/* Look inside EXPR into any simple arithmetic operations. Return the
new_tree = NULL_TREE;
- /* If we are trying to replace F with a constant, inline back
+ /* If we are trying to replace F with a constant or with another
+ instance of one of the arguments of the call, inline back
functions which do nothing else than computing a value from
the arguments they are passed. This makes it possible to
fold partially or entirely the replacement expression. */
- if (CONSTANT_CLASS_P (r) && code == CALL_EXPR)
+ if (code == CALL_EXPR)
{
- tree t = maybe_inline_call_in_expr (exp);
- if (t)
- return SUBSTITUTE_IN_EXPR (t, f, r);
+ bool maybe_inline = false;
+ if (CONSTANT_CLASS_P (r))
+ maybe_inline = true;
+ else
+ for (i = 3; i < TREE_OPERAND_LENGTH (exp); i++)
+ if (operand_equal_p (TREE_OPERAND (exp, i), r, 0))
+ {
+ maybe_inline = true;
+ break;
+ }
+ if (maybe_inline)
+ {
+ tree t = maybe_inline_call_in_expr (exp);
+ if (t)
+ return SUBSTITUTE_IN_EXPR (t, f, r);
+ }
}
for (i = 1; i < TREE_OPERAND_LENGTH (exp); i++)
enough for all extant tree codes. */
tree
-build0_stat (enum tree_code code, tree tt MEM_STAT_DECL)
+build0 (enum tree_code code, tree tt MEM_STAT_DECL)
{
tree t;
gcc_assert (TREE_CODE_LENGTH (code) == 0);
- t = make_node_stat (code PASS_MEM_STAT);
+ t = make_node (code PASS_MEM_STAT);
TREE_TYPE (t) = tt;
return t;
}
tree
-build1_stat (enum tree_code code, tree type, tree node MEM_STAT_DECL)
+build1 (enum tree_code code, tree type, tree node MEM_STAT_DECL)
{
int length = sizeof (struct tree_exp);
tree t;
} while (0)
tree
-build2_stat (enum tree_code code, tree tt, tree arg0, tree arg1 MEM_STAT_DECL)
+build2 (enum tree_code code, tree tt, tree arg0, tree arg1 MEM_STAT_DECL)
{
- bool constant, read_only, side_effects;
+ bool constant, read_only, side_effects, div_by_zero;
tree t;
gcc_assert (TREE_CODE_LENGTH (code) == 2);
gcc_assert (POINTER_TYPE_P (tt) && POINTER_TYPE_P (TREE_TYPE (arg0))
&& ptrofftype_p (TREE_TYPE (arg1)));
- t = make_node_stat (code PASS_MEM_STAT);
+ t = make_node (code PASS_MEM_STAT);
TREE_TYPE (t) = tt;
/* Below, we automatically set TREE_SIDE_EFFECTS and TREE_READONLY for the
read_only = 1;
side_effects = TREE_SIDE_EFFECTS (t);
+ switch (code)
+ {
+ case TRUNC_DIV_EXPR:
+ case CEIL_DIV_EXPR:
+ case FLOOR_DIV_EXPR:
+ case ROUND_DIV_EXPR:
+ case EXACT_DIV_EXPR:
+ case CEIL_MOD_EXPR:
+ case FLOOR_MOD_EXPR:
+ case ROUND_MOD_EXPR:
+ case TRUNC_MOD_EXPR:
+ div_by_zero = integer_zerop (arg1);
+ break;
+ default:
+ div_by_zero = false;
+ }
+
PROCESS_ARG (0);
PROCESS_ARG (1);
else
{
TREE_READONLY (t) = read_only;
- TREE_CONSTANT (t) = constant;
+ /* Don't mark X / 0 as constant. */
+ TREE_CONSTANT (t) = constant && !div_by_zero;
TREE_THIS_VOLATILE (t)
= (TREE_CODE_CLASS (code) == tcc_reference
&& arg0 && TREE_THIS_VOLATILE (arg0));
tree
-build3_stat (enum tree_code code, tree tt, tree arg0, tree arg1,
- tree arg2 MEM_STAT_DECL)
+build3 (enum tree_code code, tree tt, tree arg0, tree arg1,
+ tree arg2 MEM_STAT_DECL)
{
bool constant, read_only, side_effects;
tree t;
gcc_assert (TREE_CODE_LENGTH (code) == 3);
gcc_assert (TREE_CODE_CLASS (code) != tcc_vl_exp);
- t = make_node_stat (code PASS_MEM_STAT);
+ t = make_node (code PASS_MEM_STAT);
TREE_TYPE (t) = tt;
read_only = 1;
}
tree
-build4_stat (enum tree_code code, tree tt, tree arg0, tree arg1,
- tree arg2, tree arg3 MEM_STAT_DECL)
+build4 (enum tree_code code, tree tt, tree arg0, tree arg1,
+ tree arg2, tree arg3 MEM_STAT_DECL)
{
bool constant, read_only, side_effects;
tree t;
gcc_assert (TREE_CODE_LENGTH (code) == 4);
- t = make_node_stat (code PASS_MEM_STAT);
+ t = make_node (code PASS_MEM_STAT);
TREE_TYPE (t) = tt;
side_effects = TREE_SIDE_EFFECTS (t);
}
tree
-build5_stat (enum tree_code code, tree tt, tree arg0, tree arg1,
- tree arg2, tree arg3, tree arg4 MEM_STAT_DECL)
+build5 (enum tree_code code, tree tt, tree arg0, tree arg1,
+ tree arg2, tree arg3, tree arg4 MEM_STAT_DECL)
{
bool constant, read_only, side_effects;
tree t;
gcc_assert (TREE_CODE_LENGTH (code) == 5);
- t = make_node_stat (code PASS_MEM_STAT);
+ t = make_node (code PASS_MEM_STAT);
TREE_TYPE (t) = tt;
side_effects = TREE_SIDE_EFFECTS (t);
Other slots are initialized to 0 or null pointers. */
tree
-build_decl_stat (location_t loc, enum tree_code code, tree name,
+build_decl (location_t loc, enum tree_code code, tree name,
tree type MEM_STAT_DECL)
{
tree t;
- t = make_node_stat (code PASS_MEM_STAT);
+ t = make_node (code PASS_MEM_STAT);
DECL_SOURCE_LOCATION (t) = loc;
/* if (type == error_mark_node)
SET_EXPR_LOCATION (t, loc);
}
\f
-/* Return a declaration like DDECL except that its DECL_ATTRIBUTES
- is ATTRIBUTE. */
-
-tree
-build_decl_attribute_variant (tree ddecl, tree attribute)
-{
- DECL_ATTRIBUTES (ddecl) = attribute;
- return ddecl;
-}
-
-/* Return a type like TTYPE except that its TYPE_ATTRIBUTE
- is ATTRIBUTE and its qualifiers are QUALS.
-
- Record such modified types already made so we don't make duplicates. */
-
-tree
-build_type_attribute_qual_variant (tree ttype, tree attribute, int quals)
-{
- if (! attribute_list_equal (TYPE_ATTRIBUTES (ttype), attribute))
- {
- inchash::hash hstate;
- tree ntype;
- int i;
- tree t;
- enum tree_code code = TREE_CODE (ttype);
-
- /* Building a distinct copy of a tagged type is inappropriate; it
- causes breakage in code that expects there to be a one-to-one
- relationship between a struct and its fields.
- build_duplicate_type is another solution (as used in
- handle_transparent_union_attribute), but that doesn't play well
- with the stronger C++ type identity model. */
- if (TREE_CODE (ttype) == RECORD_TYPE
- || TREE_CODE (ttype) == UNION_TYPE
- || TREE_CODE (ttype) == QUAL_UNION_TYPE
- || TREE_CODE (ttype) == ENUMERAL_TYPE)
- {
- warning (OPT_Wattributes,
- "ignoring attributes applied to %qT after definition",
- TYPE_MAIN_VARIANT (ttype));
- return build_qualified_type (ttype, quals);
- }
-
- ttype = build_qualified_type (ttype, TYPE_UNQUALIFIED);
- ntype = build_distinct_type_copy (ttype);
-
- TYPE_ATTRIBUTES (ntype) = attribute;
-
- hstate.add_int (code);
- if (TREE_TYPE (ntype))
- hstate.add_object (TYPE_HASH (TREE_TYPE (ntype)));
- attribute_hash_list (attribute, hstate);
-
- switch (TREE_CODE (ntype))
- {
- case FUNCTION_TYPE:
- type_hash_list (TYPE_ARG_TYPES (ntype), hstate);
- break;
- case ARRAY_TYPE:
- if (TYPE_DOMAIN (ntype))
- hstate.add_object (TYPE_HASH (TYPE_DOMAIN (ntype)));
- break;
- case INTEGER_TYPE:
- t = TYPE_MAX_VALUE (ntype);
- for (i = 0; i < TREE_INT_CST_NUNITS (t); i++)
- hstate.add_object (TREE_INT_CST_ELT (t, i));
- break;
- case REAL_TYPE:
- case FIXED_POINT_TYPE:
- {
- unsigned int precision = TYPE_PRECISION (ntype);
- hstate.add_object (precision);
- }
- break;
- default:
- break;
- }
-
- ntype = type_hash_canon (hstate.end(), ntype);
-
- /* If the target-dependent attributes make NTYPE different from
- its canonical type, we will need to use structural equality
- checks for this type. */
- if (TYPE_STRUCTURAL_EQUALITY_P (ttype)
- || !comp_type_attributes (ntype, ttype))
- SET_TYPE_STRUCTURAL_EQUALITY (ntype);
- else if (TYPE_CANONICAL (ntype) == ntype)
- TYPE_CANONICAL (ntype) = TYPE_CANONICAL (ttype);
-
- ttype = build_qualified_type (ntype, quals);
- }
- else if (TYPE_QUALS (ttype) != quals)
- ttype = build_qualified_type (ttype, quals);
-
- return ttype;
-}
-
-/* Check if "omp declare simd" attribute arguments, CLAUSES1 and CLAUSES2, are
- the same. */
-
-static bool
-omp_declare_simd_clauses_equal (tree clauses1, tree clauses2)
-{
- tree cl1, cl2;
- for (cl1 = clauses1, cl2 = clauses2;
- cl1 && cl2;
- cl1 = OMP_CLAUSE_CHAIN (cl1), cl2 = OMP_CLAUSE_CHAIN (cl2))
- {
- if (OMP_CLAUSE_CODE (cl1) != OMP_CLAUSE_CODE (cl2))
- return false;
- if (OMP_CLAUSE_CODE (cl1) != OMP_CLAUSE_SIMDLEN)
- {
- if (simple_cst_equal (OMP_CLAUSE_DECL (cl1),
- OMP_CLAUSE_DECL (cl2)) != 1)
- return false;
- }
- switch (OMP_CLAUSE_CODE (cl1))
- {
- case OMP_CLAUSE_ALIGNED:
- if (simple_cst_equal (OMP_CLAUSE_ALIGNED_ALIGNMENT (cl1),
- OMP_CLAUSE_ALIGNED_ALIGNMENT (cl2)) != 1)
- return false;
- break;
- case OMP_CLAUSE_LINEAR:
- if (simple_cst_equal (OMP_CLAUSE_LINEAR_STEP (cl1),
- OMP_CLAUSE_LINEAR_STEP (cl2)) != 1)
- return false;
- break;
- case OMP_CLAUSE_SIMDLEN:
- if (simple_cst_equal (OMP_CLAUSE_SIMDLEN_EXPR (cl1),
- OMP_CLAUSE_SIMDLEN_EXPR (cl2)) != 1)
- return false;
- default:
- break;
- }
- }
- return true;
-}
-
-/* Compare two constructor-element-type constants. Return 1 if the lists
- are known to be equal; otherwise return 0. */
-
-static bool
-simple_cst_list_equal (const_tree l1, const_tree l2)
-{
- while (l1 != NULL_TREE && l2 != NULL_TREE)
- {
- if (simple_cst_equal (TREE_VALUE (l1), TREE_VALUE (l2)) != 1)
- return false;
-
- l1 = TREE_CHAIN (l1);
- l2 = TREE_CHAIN (l2);
- }
-
- return l1 == l2;
-}
-
-/* Compare two identifier nodes representing attributes. Either one may
- be in wrapped __ATTR__ form. Return true if they are the same, false
- otherwise. */
-
-static bool
-cmp_attrib_identifiers (const_tree attr1, const_tree attr2)
-{
- /* Make sure we're dealing with IDENTIFIER_NODEs. */
- gcc_checking_assert (TREE_CODE (attr1) == IDENTIFIER_NODE
- && TREE_CODE (attr2) == IDENTIFIER_NODE);
-
- /* Identifiers can be compared directly for equality. */
- if (attr1 == attr2)
- return true;
-
- /* If they are not equal, they may still be one in the form
- 'text' while the other one is in the form '__text__'. TODO:
- If we were storing attributes in normalized 'text' form, then
- this could all go away and we could take full advantage of
- the fact that we're comparing identifiers. :-) */
- const size_t attr1_len = IDENTIFIER_LENGTH (attr1);
- const size_t attr2_len = IDENTIFIER_LENGTH (attr2);
-
- if (attr2_len == attr1_len + 4)
- {
- const char *p = IDENTIFIER_POINTER (attr2);
- const char *q = IDENTIFIER_POINTER (attr1);
- if (p[0] == '_' && p[1] == '_'
- && p[attr2_len - 2] == '_' && p[attr2_len - 1] == '_'
- && strncmp (q, p + 2, attr1_len) == 0)
- return true;;
- }
- else if (attr2_len + 4 == attr1_len)
- {
- const char *p = IDENTIFIER_POINTER (attr2);
- const char *q = IDENTIFIER_POINTER (attr1);
- if (q[0] == '_' && q[1] == '_'
- && q[attr1_len - 2] == '_' && q[attr1_len - 1] == '_'
- && strncmp (q + 2, p, attr2_len) == 0)
- return true;
- }
-
- return false;
-}
-
-/* Compare two attributes for their value identity. Return true if the
- attribute values are known to be equal; otherwise return false. */
-
-bool
-attribute_value_equal (const_tree attr1, const_tree attr2)
-{
- if (TREE_VALUE (attr1) == TREE_VALUE (attr2))
- return true;
-
- if (TREE_VALUE (attr1) != NULL_TREE
- && TREE_CODE (TREE_VALUE (attr1)) == TREE_LIST
- && TREE_VALUE (attr2) != NULL_TREE
- && TREE_CODE (TREE_VALUE (attr2)) == TREE_LIST)
- {
- /* Handle attribute format. */
- if (is_attribute_p ("format", get_attribute_name (attr1)))
- {
- attr1 = TREE_VALUE (attr1);
- attr2 = TREE_VALUE (attr2);
- /* Compare the archetypes (printf/scanf/strftime/...). */
- if (!cmp_attrib_identifiers (TREE_VALUE (attr1),
- TREE_VALUE (attr2)))
- return false;
- /* Archetypes are the same. Compare the rest. */
- return (simple_cst_list_equal (TREE_CHAIN (attr1),
- TREE_CHAIN (attr2)) == 1);
- }
- return (simple_cst_list_equal (TREE_VALUE (attr1),
- TREE_VALUE (attr2)) == 1);
- }
-
- if ((flag_openmp || flag_openmp_simd)
- && TREE_VALUE (attr1) && TREE_VALUE (attr2)
- && TREE_CODE (TREE_VALUE (attr1)) == OMP_CLAUSE
- && TREE_CODE (TREE_VALUE (attr2)) == OMP_CLAUSE)
- return omp_declare_simd_clauses_equal (TREE_VALUE (attr1),
- TREE_VALUE (attr2));
-
- return (simple_cst_equal (TREE_VALUE (attr1), TREE_VALUE (attr2)) == 1);
-}
-
-/* Return 0 if the attributes for two types are incompatible, 1 if they
- are compatible, and 2 if they are nearly compatible (which causes a
- warning to be generated). */
-int
-comp_type_attributes (const_tree type1, const_tree type2)
-{
- const_tree a1 = TYPE_ATTRIBUTES (type1);
- const_tree a2 = TYPE_ATTRIBUTES (type2);
- const_tree a;
-
- if (a1 == a2)
- return 1;
- for (a = a1; a != NULL_TREE; a = TREE_CHAIN (a))
- {
- const struct attribute_spec *as;
- const_tree attr;
-
- as = lookup_attribute_spec (get_attribute_name (a));
- if (!as || as->affects_type_identity == false)
- continue;
-
- attr = lookup_attribute (as->name, CONST_CAST_TREE (a2));
- if (!attr || !attribute_value_equal (a, attr))
- break;
- }
- if (!a)
- {
- for (a = a2; a != NULL_TREE; a = TREE_CHAIN (a))
- {
- const struct attribute_spec *as;
-
- as = lookup_attribute_spec (get_attribute_name (a));
- if (!as || as->affects_type_identity == false)
- continue;
-
- if (!lookup_attribute (as->name, CONST_CAST_TREE (a1)))
- break;
- /* We don't need to compare trees again, as we did this
- already in first loop. */
- }
- /* All types - affecting identity - are equal, so
- there is no need to call target hook for comparison. */
- if (!a)
- return 1;
- }
- if (lookup_attribute ("transaction_safe", CONST_CAST_TREE (a)))
- return 0;
- /* As some type combinations - like default calling-convention - might
- be compatible, we have to call the target hook to get the final result. */
- return targetm.comp_type_attributes (type1, type2);
-}
-
-/* Return a type like TTYPE except that its TYPE_ATTRIBUTE
- is ATTRIBUTE.
-
- Record such modified types already made so we don't make duplicates. */
-
-tree
-build_type_attribute_variant (tree ttype, tree attribute)
-{
- return build_type_attribute_qual_variant (ttype, attribute,
- TYPE_QUALS (ttype));
-}
-
-
/* Reset the expression *EXPR_P, a size or position.
??? We could reset all non-constant sizes or positions. But it's cheap
leading to false ODR violation errors when merging two
instances of the same function signature compiled by
different front ends. */
- tree p;
-
- for (p = TYPE_ARG_TYPES (type); p; p = TREE_CHAIN (p))
+ for (tree p = TYPE_ARG_TYPES (type); p; p = TREE_CHAIN (p))
{
tree arg_type = TREE_VALUE (p);
/* C++ FE uses TREE_PURPOSE to store initial values. */
TREE_PURPOSE (p) = NULL;
}
- /* Java uses TYPE_MINVAL for TYPE_ARGUMENT_SIGNATURE. */
- TYPE_MINVAL (type) = NULL;
- }
- if (TREE_CODE (type) == METHOD_TYPE)
- {
- tree p;
-
- for (p = TYPE_ARG_TYPES (type); p; p = TREE_CHAIN (p))
- {
- /* C++ FE uses TREE_PURPOSE to store initial values. */
- TREE_PURPOSE (p) = NULL;
- }
- /* Java uses TYPE_MINVAL for TYPE_ARGUMENT_SIGNATURE. */
- TYPE_MINVAL (type) = NULL;
}
-
- /* Remove members that are not actually FIELD_DECLs from the field
- list of an aggregate. These occur in C++. */
- if (RECORD_OR_UNION_TYPE_P (type))
- {
- tree prev, member;
-
- /* Note that TYPE_FIELDS can be shared across distinct
- TREE_TYPEs. Therefore, if the first field of TYPE_FIELDS is
- to be removed, we cannot set its TREE_CHAIN to NULL.
- Otherwise, we would not be able to find all the other fields
- in the other instances of this TREE_TYPE.
-
- This was causing an ICE in testsuite/g++.dg/lto/20080915.C. */
- prev = NULL_TREE;
- member = TYPE_FIELDS (type);
- while (member)
- {
- if (TREE_CODE (member) == FIELD_DECL
- || (TREE_CODE (member) == TYPE_DECL
- && !DECL_IGNORED_P (member)
- && debug_info_level > DINFO_LEVEL_TERSE
- && !is_redundant_typedef (member)))
- {
- if (prev)
- TREE_CHAIN (prev) = member;
- else
- TYPE_FIELDS (type) = member;
- prev = member;
- }
-
- member = TREE_CHAIN (member);
- }
-
- if (prev)
- TREE_CHAIN (prev) = NULL_TREE;
- else
- TYPE_FIELDS (type) = NULL_TREE;
+ else if (TREE_CODE (type) == METHOD_TYPE)
+ for (tree p = TYPE_ARG_TYPES (type); p; p = TREE_CHAIN (p))
+ /* C++ FE uses TREE_PURPOSE to store initial values. */
+ TREE_PURPOSE (p) = NULL;
+ else if (RECORD_OR_UNION_TYPE_P (type))
+ {
+ /* Remove members that are not FIELD_DECLs (and maybe
+ TYPE_DECLs) from the field list of an aggregate. These occur
+ in C++. */
+ for (tree *prev = &TYPE_FIELDS (type), member; (member = *prev);)
+ if (TREE_CODE (member) == FIELD_DECL
+ || (TREE_CODE (member) == TYPE_DECL
+ && !DECL_IGNORED_P (member)
+ && debug_info_level > DINFO_LEVEL_TERSE
+ && !is_redundant_typedef (member)))
+ prev = &DECL_CHAIN (member);
+ else
+ *prev = DECL_CHAIN (member);
/* FIXME: C FE uses TYPE_VFIELD to record C_TYPE_INCOMPLETE_VARS
and danagle the pointer from time to time. */
if (TYPE_VFIELD (type) && TREE_CODE (TYPE_VFIELD (type)) != FIELD_DECL)
TYPE_VFIELD (type) = NULL_TREE;
- /* Remove TYPE_METHODS list. While it would be nice to keep it
- to enable ODR warnings about different method lists, doing so
- seems to impractically increase size of LTO data streamed.
- Keep the information if TYPE_METHODS was non-NULL. This is used
- by function.c and pretty printers. */
- if (TYPE_METHODS (type))
- TYPE_METHODS (type) = error_mark_node;
if (TYPE_BINFO (type))
{
free_lang_data_in_binfo (TYPE_BINFO (type));
TYPE_BINFO (type) = NULL;
}
}
- else
+ else if (INTEGRAL_TYPE_P (type)
+ || SCALAR_FLOAT_TYPE_P (type)
+ || FIXED_POINT_TYPE_P (type))
{
- /* For non-aggregate types, clear out the language slot (which
- overloads TYPE_BINFO). */
- TYPE_LANG_SLOT_1 (type) = NULL_TREE;
-
- if (INTEGRAL_TYPE_P (type)
- || SCALAR_FLOAT_TYPE_P (type)
- || FIXED_POINT_TYPE_P (type))
- {
- free_lang_data_in_one_sizepos (&TYPE_MIN_VALUE (type));
- free_lang_data_in_one_sizepos (&TYPE_MAX_VALUE (type));
- }
+ free_lang_data_in_one_sizepos (&TYPE_MIN_VALUE (type));
+ free_lang_data_in_one_sizepos (&TYPE_MAX_VALUE (type));
}
+ TYPE_LANG_SLOT_1 (type) = NULL_TREE;
+
free_lang_data_in_one_sizepos (&TYPE_SIZE (type));
free_lang_data_in_one_sizepos (&TYPE_SIZE_UNIT (type));
At this point, it is not needed anymore. */
DECL_SAVED_TREE (decl) = NULL_TREE;
- /* Clear the abstract origin if it refers to a method. Otherwise
- dwarf2out.c will ICE as we clear TYPE_METHODS and thus the
- origin will not be output correctly. */
+ /* Clear the abstract origin if it refers to a method.
+ Otherwise dwarf2out.c will ICE as we splice functions out of
+ TYPE_FIELDS and thus the origin will not be output
+ correctly. */
if (DECL_ABSTRACT_ORIGIN (decl)
&& DECL_CONTEXT (DECL_ABSTRACT_ORIGIN (decl))
&& RECORD_OR_UNION_TYPE_P
them and thus do not and want not to reach unused pointer types
this way. */
if (!POINTER_TYPE_P (t))
- fld_worklist_push (TYPE_MINVAL (t), fld);
+ fld_worklist_push (TYPE_MIN_VALUE_RAW (t), fld);
+ /* TYPE_MAX_VALUE_RAW is TYPE_BINFO for record types. */
if (!RECORD_OR_UNION_TYPE_P (t))
- fld_worklist_push (TYPE_MAXVAL (t), fld);
+ fld_worklist_push (TYPE_MAX_VALUE_RAW (t), fld);
fld_worklist_push (TYPE_MAIN_VARIANT (t), fld);
/* Do not walk TYPE_NEXT_VARIANT. We do not stream it and thus
do not and want not to reach unused variants this way. */
tree tem;
FOR_EACH_VEC_ELT (*BINFO_BASE_BINFOS (TYPE_BINFO (t)), i, tem)
fld_worklist_push (TREE_TYPE (tem), fld);
- tem = BINFO_VIRTUALS (TYPE_BINFO (t));
- if (tem
- /* The Java FE overloads BINFO_VIRTUALS for its own purpose. */
- && TREE_CODE (tem) == TREE_LIST)
- do
- {
- fld_worklist_push (TREE_VALUE (tem), fld);
- tem = TREE_CHAIN (tem);
- }
- while (tem);
+ fld_worklist_push (BINFO_VIRTUALS (TYPE_BINFO (t)), fld);
}
if (RECORD_OR_UNION_TYPE_P (t))
{
/* If T needs an assembler name, have one created for it. */
void
-assign_assembler_name_if_neeeded (tree t)
+assign_assembler_name_if_needed (tree t)
{
if (need_assembler_name_p (t))
{
now because free_lang_data_in_decl will invalidate data needed
for mangling. This breaks mangling on interdependent decls. */
FOR_EACH_VEC_ELT (fld.decls, i, t)
- assign_assembler_name_if_neeeded (t);
+ assign_assembler_name_if_needed (t);
/* Traverse every decl found freeing its language data. */
FOR_EACH_VEC_ELT (fld.decls, i, t)
free_lang_data_in_cgraph ();
/* Create gimple variants for common types. */
- fileptr_type_node = ptr_type_node;
- const_tm_ptr_type_node = const_ptr_type_node;
+ for (unsigned i = 0;
+ i < sizeof (builtin_structptr_types) / sizeof (builtin_structptr_type);
+ ++i)
+ builtin_structptr_types[i].node = builtin_structptr_types[i].base;
/* Reset some langhooks. Do not reset types_compatible_p, it may
still be used indirectly via the get_alias_set langhook. */
make sure we never call decl_assembler_name on local symbols and
devise a separate, middle-end private scheme for it. */
- /* Reset diagnostic machinery. */
- tree_diagnostics_defaults (global_dc);
-
- return 0;
-}
-
-
-namespace {
-
-const pass_data pass_data_ipa_free_lang_data =
-{
- SIMPLE_IPA_PASS, /* type */
- "*free_lang_data", /* name */
- OPTGROUP_NONE, /* optinfo_flags */
- TV_IPA_FREE_LANG_DATA, /* tv_id */
- 0, /* properties_required */
- 0, /* properties_provided */
- 0, /* properties_destroyed */
- 0, /* todo_flags_start */
- 0, /* todo_flags_finish */
-};
-
-class pass_ipa_free_lang_data : public simple_ipa_opt_pass
-{
-public:
- pass_ipa_free_lang_data (gcc::context *ctxt)
- : simple_ipa_opt_pass (pass_data_ipa_free_lang_data, ctxt)
- {}
-
- /* opt_pass methods: */
- virtual unsigned int execute (function *) { return free_lang_data (); }
-
-}; // class pass_ipa_free_lang_data
-
-} // anon namespace
-
-simple_ipa_opt_pass *
-make_pass_ipa_free_lang_data (gcc::context *ctxt)
-{
- return new pass_ipa_free_lang_data (ctxt);
-}
-
-/* The backbone of is_attribute_p(). ATTR_LEN is the string length of
- ATTR_NAME. Also used internally by remove_attribute(). */
-bool
-private_is_attribute_p (const char *attr_name, size_t attr_len, const_tree ident)
-{
- size_t ident_len = IDENTIFIER_LENGTH (ident);
-
- if (ident_len == attr_len)
- {
- if (strcmp (attr_name, IDENTIFIER_POINTER (ident)) == 0)
- return true;
- }
- else if (ident_len == attr_len + 4)
- {
- /* There is the possibility that ATTR is 'text' and IDENT is
- '__text__'. */
- const char *p = IDENTIFIER_POINTER (ident);
- if (p[0] == '_' && p[1] == '_'
- && p[ident_len - 2] == '_' && p[ident_len - 1] == '_'
- && strncmp (attr_name, p + 2, attr_len) == 0)
- return true;
- }
-
- return false;
-}
-
-/* The backbone of lookup_attribute(). ATTR_LEN is the string length
- of ATTR_NAME, and LIST is not NULL_TREE. */
-tree
-private_lookup_attribute (const char *attr_name, size_t attr_len, tree list)
-{
- while (list)
- {
- size_t ident_len = IDENTIFIER_LENGTH (get_attribute_name (list));
-
- if (ident_len == attr_len)
- {
- if (!strcmp (attr_name,
- IDENTIFIER_POINTER (get_attribute_name (list))))
- break;
- }
- /* TODO: If we made sure that attributes were stored in the
- canonical form without '__...__' (ie, as in 'text' as opposed
- to '__text__') then we could avoid the following case. */
- else if (ident_len == attr_len + 4)
- {
- const char *p = IDENTIFIER_POINTER (get_attribute_name (list));
- if (p[0] == '_' && p[1] == '_'
- && p[ident_len - 2] == '_' && p[ident_len - 1] == '_'
- && strncmp (attr_name, p + 2, attr_len) == 0)
- break;
- }
- list = TREE_CHAIN (list);
- }
-
- return list;
-}
-
-/* Given an attribute name ATTR_NAME and a list of attributes LIST,
- return a pointer to the attribute's list first element if the attribute
- starts with ATTR_NAME. ATTR_NAME must be in the form 'text' (not
- '__text__'). */
-
-tree
-private_lookup_attribute_by_prefix (const char *attr_name, size_t attr_len,
- tree list)
-{
- while (list)
- {
- size_t ident_len = IDENTIFIER_LENGTH (get_attribute_name (list));
-
- if (attr_len > ident_len)
- {
- list = TREE_CHAIN (list);
- continue;
- }
-
- const char *p = IDENTIFIER_POINTER (get_attribute_name (list));
-
- if (strncmp (attr_name, p, attr_len) == 0)
- break;
-
- /* TODO: If we made sure that attributes were stored in the
- canonical form without '__...__' (ie, as in 'text' as opposed
- to '__text__') then we could avoid the following case. */
- if (p[0] == '_' && p[1] == '_' &&
- strncmp (attr_name, p + 2, attr_len) == 0)
- break;
-
- list = TREE_CHAIN (list);
- }
-
- return list;
-}
-
-
-/* A variant of lookup_attribute() that can be used with an identifier
- as the first argument, and where the identifier can be either
- 'text' or '__text__'.
-
- Given an attribute ATTR_IDENTIFIER, and a list of attributes LIST,
- return a pointer to the attribute's list element if the attribute
- is part of the list, or NULL_TREE if not found. If the attribute
- appears more than once, this only returns the first occurrence; the
- TREE_CHAIN of the return value should be passed back in if further
- occurrences are wanted. ATTR_IDENTIFIER must be an identifier but
- can be in the form 'text' or '__text__'. */
-static tree
-lookup_ident_attribute (tree attr_identifier, tree list)
-{
- gcc_checking_assert (TREE_CODE (attr_identifier) == IDENTIFIER_NODE);
-
- while (list)
- {
- gcc_checking_assert (TREE_CODE (get_attribute_name (list))
- == IDENTIFIER_NODE);
-
- if (cmp_attrib_identifiers (attr_identifier,
- get_attribute_name (list)))
- /* Found it. */
- break;
- list = TREE_CHAIN (list);
- }
-
- return list;
-}
-
-/* Remove any instances of attribute ATTR_NAME in LIST and return the
- modified list. */
-
-tree
-remove_attribute (const char *attr_name, tree list)
-{
- tree *p;
- size_t attr_len = strlen (attr_name);
-
- gcc_checking_assert (attr_name[0] != '_');
-
- for (p = &list; *p; )
- {
- tree l = *p;
- /* TODO: If we were storing attributes in normalized form, here
- we could use a simple strcmp(). */
- if (private_is_attribute_p (attr_name, attr_len, get_attribute_name (l)))
- *p = TREE_CHAIN (l);
- else
- p = &TREE_CHAIN (l);
- }
-
- return list;
-}
-
-/* Return an attribute list that is the union of a1 and a2. */
-
-tree
-merge_attributes (tree a1, tree a2)
-{
- tree attributes;
-
- /* Either one unset? Take the set one. */
-
- if ((attributes = a1) == 0)
- attributes = a2;
-
- /* One that completely contains the other? Take it. */
-
- else if (a2 != 0 && ! attribute_list_contained (a1, a2))
- {
- if (attribute_list_contained (a2, a1))
- attributes = a2;
- else
- {
- /* Pick the longest list, and hang on the other list. */
-
- if (list_length (a1) < list_length (a2))
- attributes = a2, a2 = a1;
-
- for (; a2 != 0; a2 = TREE_CHAIN (a2))
- {
- tree a;
- for (a = lookup_ident_attribute (get_attribute_name (a2),
- attributes);
- a != NULL_TREE && !attribute_value_equal (a, a2);
- a = lookup_ident_attribute (get_attribute_name (a2),
- TREE_CHAIN (a)))
- ;
- if (a == NULL_TREE)
- {
- a1 = copy_node (a2);
- TREE_CHAIN (a1) = attributes;
- attributes = a1;
- }
- }
- }
- }
- return attributes;
-}
-
-/* Given types T1 and T2, merge their attributes and return
- the result. */
-
-tree
-merge_type_attributes (tree t1, tree t2)
-{
- return merge_attributes (TYPE_ATTRIBUTES (t1),
- TYPE_ATTRIBUTES (t2));
-}
-
-/* Given decls OLDDECL and NEWDECL, merge their attributes and return
- the result. */
-
-tree
-merge_decl_attributes (tree olddecl, tree newdecl)
-{
- return merge_attributes (DECL_ATTRIBUTES (olddecl),
- DECL_ATTRIBUTES (newdecl));
-}
-
-#if TARGET_DLLIMPORT_DECL_ATTRIBUTES
-
-/* Specialization of merge_decl_attributes for various Windows targets.
-
- This handles the following situation:
-
- __declspec (dllimport) int foo;
- int foo;
-
- The second instance of `foo' nullifies the dllimport. */
-
-tree
-merge_dllimport_decl_attributes (tree old, tree new_tree)
-{
- tree a;
- int delete_dllimport_p = 1;
-
- /* What we need to do here is remove from `old' dllimport if it doesn't
- appear in `new'. dllimport behaves like extern: if a declaration is
- marked dllimport and a definition appears later, then the object
- is not dllimport'd. We also remove a `new' dllimport if the old list
- contains dllexport: dllexport always overrides dllimport, regardless
- of the order of declaration. */
- if (!VAR_OR_FUNCTION_DECL_P (new_tree))
- delete_dllimport_p = 0;
- else if (DECL_DLLIMPORT_P (new_tree)
- && lookup_attribute ("dllexport", DECL_ATTRIBUTES (old)))
- {
- DECL_DLLIMPORT_P (new_tree) = 0;
- warning (OPT_Wattributes, "%q+D already declared with dllexport attribute: "
- "dllimport ignored", new_tree);
- }
- else if (DECL_DLLIMPORT_P (old) && !DECL_DLLIMPORT_P (new_tree))
- {
- /* Warn about overriding a symbol that has already been used, e.g.:
- extern int __attribute__ ((dllimport)) foo;
- int* bar () {return &foo;}
- int foo;
- */
- if (TREE_USED (old))
- {
- warning (0, "%q+D redeclared without dllimport attribute "
- "after being referenced with dll linkage", new_tree);
- /* If we have used a variable's address with dllimport linkage,
- keep the old DECL_DLLIMPORT_P flag: the ADDR_EXPR using the
- decl may already have had TREE_CONSTANT computed.
- We still remove the attribute so that assembler code refers
- to '&foo rather than '_imp__foo'. */
- if (VAR_P (old) && TREE_ADDRESSABLE (old))
- DECL_DLLIMPORT_P (new_tree) = 1;
- }
-
- /* Let an inline definition silently override the external reference,
- but otherwise warn about attribute inconsistency. */
- else if (VAR_P (new_tree) || !DECL_DECLARED_INLINE_P (new_tree))
- warning (OPT_Wattributes, "%q+D redeclared without dllimport attribute: "
- "previous dllimport ignored", new_tree);
- }
- else
- delete_dllimport_p = 0;
-
- a = merge_attributes (DECL_ATTRIBUTES (old), DECL_ATTRIBUTES (new_tree));
-
- if (delete_dllimport_p)
- a = remove_attribute ("dllimport", a);
-
- return a;
-}
-
-/* Handle a "dllimport" or "dllexport" attribute; arguments as in
- struct attribute_spec.handler. */
-
-tree
-handle_dll_attribute (tree * pnode, tree name, tree args, int flags,
- bool *no_add_attrs)
-{
- tree node = *pnode;
- bool is_dllimport;
-
- /* These attributes may apply to structure and union types being created,
- but otherwise should pass to the declaration involved. */
- if (!DECL_P (node))
- {
- if (flags & ((int) ATTR_FLAG_DECL_NEXT | (int) ATTR_FLAG_FUNCTION_NEXT
- | (int) ATTR_FLAG_ARRAY_NEXT))
- {
- *no_add_attrs = true;
- return tree_cons (name, args, NULL_TREE);
- }
- if (TREE_CODE (node) == RECORD_TYPE
- || TREE_CODE (node) == UNION_TYPE)
- {
- node = TYPE_NAME (node);
- if (!node)
- return NULL_TREE;
- }
- else
- {
- warning (OPT_Wattributes, "%qE attribute ignored",
- name);
- *no_add_attrs = true;
- return NULL_TREE;
- }
- }
-
- if (!VAR_OR_FUNCTION_DECL_P (node) && TREE_CODE (node) != TYPE_DECL)
- {
- *no_add_attrs = true;
- warning (OPT_Wattributes, "%qE attribute ignored",
- name);
- return NULL_TREE;
- }
-
- if (TREE_CODE (node) == TYPE_DECL
- && TREE_CODE (TREE_TYPE (node)) != RECORD_TYPE
- && TREE_CODE (TREE_TYPE (node)) != UNION_TYPE)
- {
- *no_add_attrs = true;
- warning (OPT_Wattributes, "%qE attribute ignored",
- name);
- return NULL_TREE;
- }
+ /* Reset diagnostic machinery. */
+ tree_diagnostics_defaults (global_dc);
- is_dllimport = is_attribute_p ("dllimport", name);
+ return 0;
+}
- /* Report error on dllimport ambiguities seen now before they cause
- any damage. */
- if (is_dllimport)
- {
- /* Honor any target-specific overrides. */
- if (!targetm.valid_dllimport_attribute_p (node))
- *no_add_attrs = true;
- else if (TREE_CODE (node) == FUNCTION_DECL
- && DECL_DECLARED_INLINE_P (node))
- {
- warning (OPT_Wattributes, "inline function %q+D declared as "
- " dllimport: attribute ignored", node);
- *no_add_attrs = true;
- }
- /* Like MS, treat definition of dllimported variables and
- non-inlined functions on declaration as syntax errors. */
- else if (TREE_CODE (node) == FUNCTION_DECL && DECL_INITIAL (node))
- {
- error ("function %q+D definition is marked dllimport", node);
- *no_add_attrs = true;
- }
+namespace {
- else if (VAR_P (node))
- {
- if (DECL_INITIAL (node))
- {
- error ("variable %q+D definition is marked dllimport",
- node);
- *no_add_attrs = true;
- }
+const pass_data pass_data_ipa_free_lang_data =
+{
+ SIMPLE_IPA_PASS, /* type */
+ "*free_lang_data", /* name */
+ OPTGROUP_NONE, /* optinfo_flags */
+ TV_IPA_FREE_LANG_DATA, /* tv_id */
+ 0, /* properties_required */
+ 0, /* properties_provided */
+ 0, /* properties_destroyed */
+ 0, /* todo_flags_start */
+ 0, /* todo_flags_finish */
+};
- /* `extern' needn't be specified with dllimport.
- Specify `extern' now and hope for the best. Sigh. */
- DECL_EXTERNAL (node) = 1;
- /* Also, implicitly give dllimport'd variables declared within
- a function global scope, unless declared static. */
- if (current_function_decl != NULL_TREE && !TREE_STATIC (node))
- TREE_PUBLIC (node) = 1;
- }
+class pass_ipa_free_lang_data : public simple_ipa_opt_pass
+{
+public:
+ pass_ipa_free_lang_data (gcc::context *ctxt)
+ : simple_ipa_opt_pass (pass_data_ipa_free_lang_data, ctxt)
+ {}
- if (*no_add_attrs == false)
- DECL_DLLIMPORT_P (node) = 1;
- }
- else if (TREE_CODE (node) == FUNCTION_DECL
- && DECL_DECLARED_INLINE_P (node)
- && flag_keep_inline_dllexport)
- /* An exported function, even if inline, must be emitted. */
- DECL_EXTERNAL (node) = 0;
+ /* opt_pass methods: */
+ virtual unsigned int execute (function *) { return free_lang_data (); }
- /* Report error if symbol is not accessible at global scope. */
- if (!TREE_PUBLIC (node) && VAR_OR_FUNCTION_DECL_P (node))
- {
- error ("external linkage required for symbol %q+D because of "
- "%qE attribute", node, name);
- *no_add_attrs = true;
- }
+}; // class pass_ipa_free_lang_data
- /* A dllexport'd entity must have default visibility so that other
- program units (shared libraries or the main executable) can see
- it. A dllimport'd entity must have default visibility so that
- the linker knows that undefined references within this program
- unit can be resolved by the dynamic linker. */
- if (!*no_add_attrs)
- {
- if (DECL_VISIBILITY_SPECIFIED (node)
- && DECL_VISIBILITY (node) != VISIBILITY_DEFAULT)
- error ("%qE implies default visibility, but %qD has already "
- "been declared with a different visibility",
- name, node);
- DECL_VISIBILITY (node) = VISIBILITY_DEFAULT;
- DECL_VISIBILITY_SPECIFIED (node) = 1;
- }
+} // anon namespace
- return NULL_TREE;
+simple_ipa_opt_pass *
+make_pass_ipa_free_lang_data (gcc::context *ctxt)
+{
+ return new pass_ipa_free_lang_data (ctxt);
}
-
-#endif /* TARGET_DLLIMPORT_DECL_ATTRIBUTES */
\f
/* Set the type qualifiers for TYPE to TYPE_QUALS, which is a bitmask
of the various TYPE_QUAL values. */
exist. This function never returns NULL_TREE. */
tree
-build_qualified_type (tree type, int type_quals)
+build_qualified_type (tree type, int type_quals MEM_STAT_DECL)
{
tree t;
/* If not, build it. */
if (!t)
{
- t = build_variant_type_copy (type);
+ t = build_variant_type_copy (type PASS_MEM_STAT);
set_type_quals (t, type_quals);
if (((type_quals & TYPE_QUAL_ATOMIC) == TYPE_QUAL_ATOMIC))
t = build_variant_type_copy (type);
SET_TYPE_ALIGN (t, align);
+ TYPE_USER_ALIGN (t) = 1;
return t;
}
TYPE_CANONICAL points to itself. */
tree
-build_distinct_type_copy (tree type)
+build_distinct_type_copy (tree type MEM_STAT_DECL)
{
- tree t = copy_node (type);
+ tree t = copy_node (type PASS_MEM_STAT);
TYPE_POINTER_TO (t) = 0;
TYPE_REFERENCE_TO (t) = 0;
TYPE_MAIN_VARIANT (t) = t;
TYPE_NEXT_VARIANT (t) = 0;
- /* We do not record methods in type copies nor variants
- so we do not need to keep them up to date when new method
- is inserted. */
- if (RECORD_OR_UNION_TYPE_P (t))
- TYPE_METHODS (t) = NULL_TREE;
-
/* Note that it is now possible for TYPE_MIN_VALUE to be a value
whose TREE_TYPE is not t. This can also happen in the Ada
frontend when using subtypes. */
require structural equality checks). */
tree
-build_variant_type_copy (tree type)
+build_variant_type_copy (tree type MEM_STAT_DECL)
{
tree t, m = TYPE_MAIN_VARIANT (type);
- t = build_distinct_type_copy (type);
+ t = build_distinct_type_copy (type PASS_MEM_STAT);
/* Since we're building a variant, assume that it is a non-semantic
variant. This also propagates TYPE_STRUCTURAL_EQUALITY_P. */
/* Hashing of types so that we don't make duplicates.
The entry point is `type_hash_canon'. */
-/* Compute a hash code for a list of types (chain of TREE_LIST nodes
- with types in the TREE_VALUE slots), by adding the hash codes
- of the individual types. */
+/* Generate the default hash code for TYPE. This is designed for
+ speed, rather than maximum entropy. */
-static void
-type_hash_list (const_tree list, inchash::hash &hstate)
+hashval_t
+type_hash_canon_hash (tree type)
{
- const_tree tail;
+ inchash::hash hstate;
+
+ hstate.add_int (TREE_CODE (type));
+
+ if (TREE_TYPE (type))
+ hstate.add_object (TYPE_HASH (TREE_TYPE (type)));
+
+ for (tree t = TYPE_ATTRIBUTES (type); t; t = TREE_CHAIN (t))
+ /* Just the identifier is adequate to distinguish. */
+ hstate.add_object (IDENTIFIER_HASH_VALUE (get_attribute_name (t)));
+
+ switch (TREE_CODE (type))
+ {
+ case METHOD_TYPE:
+ hstate.add_object (TYPE_HASH (TYPE_METHOD_BASETYPE (type)));
+ /* FALLTHROUGH. */
+ case FUNCTION_TYPE:
+ for (tree t = TYPE_ARG_TYPES (type); t; t = TREE_CHAIN (t))
+ if (TREE_VALUE (t) != error_mark_node)
+ hstate.add_object (TYPE_HASH (TREE_VALUE (t)));
+ break;
- for (tail = list; tail; tail = TREE_CHAIN (tail))
- if (TREE_VALUE (tail) != error_mark_node)
- hstate.add_object (TYPE_HASH (TREE_VALUE (tail)));
+ case OFFSET_TYPE:
+ hstate.add_object (TYPE_HASH (TYPE_OFFSET_BASETYPE (type)));
+ break;
+
+ case ARRAY_TYPE:
+ {
+ if (TYPE_DOMAIN (type))
+ hstate.add_object (TYPE_HASH (TYPE_DOMAIN (type)));
+ if (!AGGREGATE_TYPE_P (TREE_TYPE (type)))
+ {
+ unsigned typeless = TYPE_TYPELESS_STORAGE (type);
+ hstate.add_object (typeless);
+ }
+ }
+ break;
+
+ case INTEGER_TYPE:
+ {
+ tree t = TYPE_MAX_VALUE (type);
+ if (!t)
+ t = TYPE_MIN_VALUE (type);
+ for (int i = 0; i < TREE_INT_CST_NUNITS (t); i++)
+ hstate.add_object (TREE_INT_CST_ELT (t, i));
+ break;
+ }
+
+ case REAL_TYPE:
+ case FIXED_POINT_TYPE:
+ {
+ unsigned prec = TYPE_PRECISION (type);
+ hstate.add_object (prec);
+ break;
+ }
+
+ case VECTOR_TYPE:
+ {
+ unsigned nunits = TYPE_VECTOR_SUBPARTS (type);
+ hstate.add_object (nunits);
+ break;
+ }
+
+ default:
+ break;
+ }
+
+ return hstate.end ();
}
/* These are the Hashtable callback functions. */
break;
return 0;
case ARRAY_TYPE:
- return TYPE_DOMAIN (a->type) == TYPE_DOMAIN (b->type);
+ /* Don't compare TYPE_TYPELESS_STORAGE flag on aggregates,
+ where the flag should be inherited from the element type
+ and can change after ARRAY_TYPEs are created; on non-aggregates
+ compare it and hash it, scalars will never have that flag set
+ and we need to differentiate between arrays created by different
+ front-ends or middle-end created arrays. */
+ return (TYPE_DOMAIN (a->type) == TYPE_DOMAIN (b->type)
+ && (AGGREGATE_TYPE_P (TREE_TYPE (a->type))
+ || (TYPE_TYPELESS_STORAGE (a->type)
+ == TYPE_TYPELESS_STORAGE (b->type))));
case RECORD_TYPE:
case UNION_TYPE:
{
tree t1 = ((type_hash *) *loc)->type;
gcc_assert (TYPE_MAIN_VARIANT (t1) == t1);
+ if (TYPE_UID (type) + 1 == next_type_uid)
+ --next_type_uid;
+ /* Free also min/max values and the cache for integer
+ types. This can't be done in free_node, as LTO frees
+ those on its own. */
+ if (TREE_CODE (type) == INTEGER_TYPE)
+ {
+ if (TYPE_MIN_VALUE (type)
+ && TREE_TYPE (TYPE_MIN_VALUE (type)) == type)
+ ggc_free (TYPE_MIN_VALUE (type));
+ if (TYPE_MAX_VALUE (type)
+ && TREE_TYPE (TYPE_MAX_VALUE (type)) == type)
+ ggc_free (TYPE_MAX_VALUE (type));
+ if (TYPE_CACHED_VALUES_P (type))
+ ggc_free (TYPE_CACHED_VALUES (type));
+ }
free_node (type);
return t1;
}
type_hash_table->collisions ());
}
-/* Compute a hash code for a list of attributes (chain of TREE_LIST nodes
- with names in the TREE_PURPOSE slots and args in the TREE_VALUE slots),
- by adding the hash codes of the individual attributes. */
-
-static void
-attribute_hash_list (const_tree list, inchash::hash &hstate)
-{
- const_tree tail;
-
- for (tail = list; tail; tail = TREE_CHAIN (tail))
- /* ??? Do we want to add in TREE_VALUE too? */
- hstate.add_object (IDENTIFIER_HASH_VALUE (get_attribute_name (tail)));
-}
-
-/* Given two lists of attributes, return true if list l2 is
- equivalent to l1. */
-
-int
-attribute_list_equal (const_tree l1, const_tree l2)
-{
- if (l1 == l2)
- return 1;
-
- return attribute_list_contained (l1, l2)
- && attribute_list_contained (l2, l1);
-}
-
-/* Given two lists of attributes, return true if list L2 is
- completely contained within L1. */
-/* ??? This would be faster if attribute names were stored in a canonicalized
- form. Otherwise, if L1 uses `foo' and L2 uses `__foo__', the long method
- must be used to show these elements are equivalent (which they are). */
-/* ??? It's not clear that attributes with arguments will always be handled
- correctly. */
-
-int
-attribute_list_contained (const_tree l1, const_tree l2)
-{
- const_tree t1, t2;
-
- /* First check the obvious, maybe the lists are identical. */
- if (l1 == l2)
- return 1;
-
- /* Maybe the lists are similar. */
- for (t1 = l1, t2 = l2;
- t1 != 0 && t2 != 0
- && get_attribute_name (t1) == get_attribute_name (t2)
- && TREE_VALUE (t1) == TREE_VALUE (t2);
- t1 = TREE_CHAIN (t1), t2 = TREE_CHAIN (t2))
- ;
-
- /* Maybe the lists are equal. */
- if (t1 == 0 && t2 == 0)
- return 1;
-
- for (; t2 != 0; t2 = TREE_CHAIN (t2))
- {
- const_tree attr;
- /* This CONST_CAST is okay because lookup_attribute does not
- modify its argument and the return value is assigned to a
- const_tree. */
- for (attr = lookup_ident_attribute (get_attribute_name (t2),
- CONST_CAST_TREE (l1));
- attr != NULL_TREE && !attribute_value_equal (t2, attr);
- attr = lookup_ident_attribute (get_attribute_name (t2),
- TREE_CHAIN (attr)))
- ;
-
- if (attr == NULL_TREE)
- return 0;
- }
-
- return 1;
-}
-
/* Given two lists of types
(chains of TREE_LIST nodes with types in the TREE_VALUE slots)
return 1 if the lists contain the same types in the same order.
inchash::add_expr (tsi_stmt (i), hstate, flags);
return;
}
+ case TREE_VEC:
+ for (i = 0; i < TREE_VEC_LENGTH (t); ++i)
+ inchash::add_expr (TREE_VEC_ELT (t, i), hstate, flags);
+ return;
case FUNCTION_DECL:
/* When referring to a built-in FUNCTION_DECL, use the __builtin__ form.
Otherwise nodes that compare equal according to operand_equal_p might
build_range_type_1 (tree type, tree lowval, tree highval, bool shared)
{
tree itype = make_node (INTEGER_TYPE);
- inchash::hash hstate;
TREE_TYPE (itype) = type;
return itype;
}
- inchash::add_expr (TYPE_MIN_VALUE (itype), hstate);
- inchash::add_expr (TYPE_MAX_VALUE (itype), hstate);
- hstate.merge_hash (TYPE_HASH (type));
- itype = type_hash_canon (hstate.end (), itype);
+ hashval_t hash = type_hash_canon_hash (itype);
+ itype = type_hash_canon (hash, itype);
return itype;
}
/* Construct, lay out and return the type of arrays of elements with ELT_TYPE
and number of elements specified by the range of values of INDEX_TYPE.
+ If TYPELESS_STORAGE is true, TYPE_TYPELESS_STORAGE flag is set on the type.
If SHARED is true, reuse such a type that has already been constructed. */
static tree
-build_array_type_1 (tree elt_type, tree index_type, bool shared)
+build_array_type_1 (tree elt_type, tree index_type, bool typeless_storage,
+ bool shared)
{
tree t;
TREE_TYPE (t) = elt_type;
TYPE_DOMAIN (t) = index_type;
TYPE_ADDR_SPACE (t) = TYPE_ADDR_SPACE (elt_type);
+ TYPE_TYPELESS_STORAGE (t) = typeless_storage;
layout_type (t);
/* If the element type is incomplete at this point we get marked for
if (shared)
{
- inchash::hash hstate;
- hstate.add_object (TYPE_HASH (elt_type));
- if (index_type)
- hstate.add_object (TYPE_HASH (index_type));
- t = type_hash_canon (hstate.end (), t);
+ hashval_t hash = type_hash_canon_hash (t);
+ t = type_hash_canon (hash, t);
}
if (TYPE_CANONICAL (t) == t)
= build_array_type_1 (TYPE_CANONICAL (elt_type),
index_type
? TYPE_CANONICAL (index_type) : NULL_TREE,
- shared);
+ typeless_storage, shared);
}
return t;
/* Wrapper around build_array_type_1 with SHARED set to true. */
tree
-build_array_type (tree elt_type, tree index_type)
+build_array_type (tree elt_type, tree index_type, bool typeless_storage)
{
- return build_array_type_1 (elt_type, index_type, true);
+ return build_array_type_1 (elt_type, index_type, typeless_storage, true);
}
/* Wrapper around build_array_type_1 with SHARED set to false. */
tree
build_nonshared_array_type (tree elt_type, tree index_type)
{
- return build_array_type_1 (elt_type, index_type, false);
+ return build_array_type_1 (elt_type, index_type, false, false);
}
/* Return a representation of ELT_TYPE[NELTS], using indices of type
TYPE_ARG_TYPES (t) = arg_types;
/* If we already have such a type, use the old one. */
- hstate.add_object (TYPE_HASH (value_type));
- type_hash_list (arg_types, hstate);
- t = type_hash_canon (hstate.end (), t);
+ hashval_t hash = type_hash_canon_hash (t);
+ t = type_hash_canon (hash, t);
/* Set up the canonical type. */
any_structural_p = TYPE_STRUCTURAL_EQUALITY_P (value_type);
{
tree t;
tree ptype;
- inchash::hash hstate;
bool any_structural_p, any_noncanonical_p;
tree canon_argtypes;
TYPE_ARG_TYPES (t) = argtypes;
/* If we already have such a type, use the old one. */
- hstate.add_object (TYPE_HASH (basetype));
- hstate.add_object (TYPE_HASH (rettype));
- type_hash_list (argtypes, hstate);
- t = type_hash_canon (hstate.end (), t);
+ hashval_t hash = type_hash_canon_hash (t);
+ t = type_hash_canon (hash, t);
/* Set up the canonical type. */
any_structural_p
build_offset_type (tree basetype, tree type)
{
tree t;
- inchash::hash hstate;
/* Make a node of the sort we want. */
t = make_node (OFFSET_TYPE);
TREE_TYPE (t) = type;
/* If we already have such a type, use the old one. */
- hstate.add_object (TYPE_HASH (basetype));
- hstate.add_object (TYPE_HASH (type));
- t = type_hash_canon (hstate.end (), t);
+ hashval_t hash = type_hash_canon_hash (t);
+ t = type_hash_canon (hash, t);
if (!COMPLETE_TYPE_P (t))
layout_type (t);
build_complex_type (tree component_type, bool named)
{
tree t;
- inchash::hash hstate;
gcc_assert (INTEGRAL_TYPE_P (component_type)
|| SCALAR_FLOAT_TYPE_P (component_type)
TREE_TYPE (t) = TYPE_MAIN_VARIANT (component_type);
/* If we already have such a type, use the old one. */
- hstate.add_object (TYPE_HASH (component_type));
- t = type_hash_canon (hstate.end (), t);
+ hashval_t hash = type_hash_canon_hash (t);
+ t = type_hash_canon (hash, t);
if (!COMPLETE_TYPE_P (t))
layout_type (t);
}
}
- /* If we finally reach a constant see if it fits in for_type and
+ /* If we finally reach a constant see if it fits in sth smaller and
in that case convert it. */
- if (for_type
- && TREE_CODE (win) == INTEGER_CST
- && TREE_TYPE (win) != for_type
- && int_fits_type_p (win, for_type))
- win = fold_convert (for_type, win);
+ if (TREE_CODE (win) == INTEGER_CST)
+ {
+ tree wtype = TREE_TYPE (win);
+ unsigned prec = wi::min_precision (win, TYPE_SIGN (wtype));
+ if (for_type)
+ prec = MAX (prec, final_prec);
+ if (prec < TYPE_PRECISION (wtype))
+ {
+ tree t = lang_hooks.types.type_for_size (prec, TYPE_UNSIGNED (wtype));
+ if (t && TYPE_PRECISION (t) < TYPE_PRECISION (wtype))
+ win = fold_convert (t, win);
+ }
+ }
return win;
}
\f
#define FILE_FUNCTION_FORMAT "_GLOBAL__%s_%s"
-/* Generate a crc32 of a byte. */
+/* Generate a crc32 of the low BYTES bytes of VALUE. */
-static unsigned
-crc32_unsigned_bits (unsigned chksum, unsigned value, unsigned bits)
+unsigned
+crc32_unsigned_n (unsigned chksum, unsigned value, unsigned bytes)
{
- unsigned ix;
-
- for (ix = bits; ix--; value <<= 1)
+ /* This relies on the raw feedback's top 4 bits being zero. */
+#define FEEDBACK(X) ((X) * 0x04c11db7)
+#define SYNDROME(X) (FEEDBACK ((X) & 1) ^ FEEDBACK ((X) & 2) \
+ ^ FEEDBACK ((X) & 4) ^ FEEDBACK ((X) & 8))
+ static const unsigned syndromes[16] =
{
- unsigned feedback;
-
- feedback = (value ^ chksum) & 0x80000000 ? 0x04c11db7 : 0;
- chksum <<= 1;
- chksum ^= feedback;
- }
- return chksum;
-}
-
-/* Generate a crc32 of a 32-bit unsigned. */
+ SYNDROME(0x0), SYNDROME(0x1), SYNDROME(0x2), SYNDROME(0x3),
+ SYNDROME(0x4), SYNDROME(0x5), SYNDROME(0x6), SYNDROME(0x7),
+ SYNDROME(0x8), SYNDROME(0x9), SYNDROME(0xa), SYNDROME(0xb),
+ SYNDROME(0xc), SYNDROME(0xd), SYNDROME(0xe), SYNDROME(0xf),
+ };
+#undef FEEDBACK
+#undef SYNDROME
-unsigned
-crc32_unsigned (unsigned chksum, unsigned value)
-{
- return crc32_unsigned_bits (chksum, value, 32);
-}
+ value <<= (32 - bytes * 8);
+ for (unsigned ix = bytes * 2; ix--; value <<= 4)
+ {
+ unsigned feedback = syndromes[((value ^ chksum) >> 28) & 0xf];
-/* Generate a crc32 of a byte. */
+ chksum = (chksum << 4) ^ feedback;
+ }
-unsigned
-crc32_byte (unsigned chksum, char byte)
-{
- return crc32_unsigned_bits (chksum, (unsigned) byte << 24, 8);
+ return chksum;
}
/* Generate a crc32 of a string. */
crc32_string (unsigned chksum, const char *string)
{
do
- {
- chksum = crc32_byte (chksum, *string);
- }
+ chksum = crc32_byte (chksum, *string);
while (*string++);
return chksum;
}
make_vector_type (tree innertype, int nunits, machine_mode mode)
{
tree t;
- inchash::hash hstate;
tree mv_innertype = TYPE_MAIN_VARIANT (innertype);
t = make_node (VECTOR_TYPE);
layout_type (t);
- hstate.add_wide_int (VECTOR_TYPE);
- hstate.add_wide_int (nunits);
- hstate.add_wide_int (mode);
- hstate.add_object (TYPE_HASH (TREE_TYPE (t)));
- t = type_hash_canon (hstate.end (), t);
+ hashval_t hash = type_hash_canon_hash (t);
+ t = type_hash_canon (hash, t);
/* We have built a main variant, based on the main variant of the
inner type. Use it to build the variant we return. */
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;
- const_tm_ptr_type_node = const_ptr_type_node;
+ for (unsigned i = 0;
+ i < sizeof (builtin_structptr_types) / sizeof (builtin_structptr_type);
+ ++i)
+ builtin_structptr_types[i].node = builtin_structptr_types[i].base;
pointer_sized_int_node = build_nonstandard_integer_type (POINTER_SIZE, 1);
if (flags & ECF_LEAF)
DECL_ATTRIBUTES (decl) = tree_cons (get_identifier ("leaf"),
NULL, DECL_ATTRIBUTES (decl));
+ if (flags & ECF_COLD)
+ DECL_ATTRIBUTES (decl) = tree_cons (get_identifier ("cold"),
+ NULL, DECL_ATTRIBUTES (decl));
if (flags & ECF_RET1)
DECL_ATTRIBUTES (decl)
= tree_cons (get_identifier ("fn spec"),
BUILT_IN_UNREACHABLE,
"__builtin_unreachable",
ECF_NOTHROW | ECF_LEAF | ECF_NORETURN
- | ECF_CONST);
+ | ECF_CONST | ECF_COLD);
if (!builtin_decl_explicit_p (BUILT_IN_ABORT))
local_define_builtin ("__builtin_abort", ftype, BUILT_IN_ABORT,
"abort",
- ECF_LEAF | ECF_NORETURN | ECF_CONST);
+ ECF_LEAF | ECF_NORETURN | ECF_CONST | ECF_COLD);
}
if (!builtin_decl_explicit_p (BUILT_IN_MEMCPY)
ECF_PURE | ECF_NOTHROW | ECF_LEAF);
/* If there's a possibility that we might use the ARM EABI, build the
- alternate __cxa_end_cleanup node used to resume from C++ and Java. */
+ alternate __cxa_end_cleanup node used to resume from C++. */
if (targetm.arm_eabi_unwinder)
{
ftype = build_function_type_list (void_type_node, NULL_TREE);
object is initialized to zeros. */
tree
-build_vl_exp_stat (enum tree_code code, int len MEM_STAT_DECL)
+build_vl_exp (enum tree_code code, int len MEM_STAT_DECL)
{
tree t;
int length = (len - 1) * sizeof (tree) + sizeof (struct tree_exp);
and drop the flag. */
t = copy_node (t);
TREE_OVERFLOW (t) = 0;
+
+ /* For constants that contain nested constants, drop the flag
+ from those as well. */
+ if (TREE_CODE (t) == COMPLEX_CST)
+ {
+ if (TREE_OVERFLOW (TREE_REALPART (t)))
+ TREE_REALPART (t) = drop_tree_overflow (TREE_REALPART (t));
+ if (TREE_OVERFLOW (TREE_IMAGPART (t)))
+ TREE_IMAGPART (t) = drop_tree_overflow (TREE_IMAGPART (t));
+ }
+ if (TREE_CODE (t) == VECTOR_CST)
+ {
+ for (unsigned i = 0; i < VECTOR_CST_NELTS (t); ++i)
+ {
+ tree& elt = VECTOR_CST_ELT (t, i);
+ if (TREE_OVERFLOW (elt))
+ elt = drop_tree_overflow (elt);
+ }
+ }
return t;
}
return NULL_TREE;
}
-/* Returns true if REF is an array reference to an array at the end of
- a structure. If this is the case, the array may be allocated larger
+/* Returns true if REF is an array reference or a component reference
+ to an array at the end of a structure.
+ If this is the case, the array may be allocated larger
than its upper bound implies. */
bool
array_at_struct_end_p (tree ref)
{
- if (TREE_CODE (ref) != ARRAY_REF
- && TREE_CODE (ref) != ARRAY_RANGE_REF)
+ tree atype;
+
+ if (TREE_CODE (ref) == ARRAY_REF
+ || TREE_CODE (ref) == ARRAY_RANGE_REF)
+ {
+ atype = TREE_TYPE (TREE_OPERAND (ref, 0));
+ ref = TREE_OPERAND (ref, 0);
+ }
+ else if (TREE_CODE (ref) == COMPONENT_REF
+ && TREE_CODE (TREE_TYPE (TREE_OPERAND (ref, 1))) == ARRAY_TYPE)
+ atype = TREE_TYPE (TREE_OPERAND (ref, 1));
+ else
return false;
while (handled_component_p (ref))
/* If the reference chain contains a component reference to a
non-union type and there follows another field the reference
is not at the end of a structure. */
- if (TREE_CODE (ref) == COMPONENT_REF
- && TREE_CODE (TREE_TYPE (TREE_OPERAND (ref, 0))) == RECORD_TYPE)
+ if (TREE_CODE (ref) == COMPONENT_REF)
{
- tree nextf = DECL_CHAIN (TREE_OPERAND (ref, 1));
- while (nextf && TREE_CODE (nextf) != FIELD_DECL)
- nextf = DECL_CHAIN (nextf);
- if (nextf)
- return false;
+ if (TREE_CODE (TREE_TYPE (TREE_OPERAND (ref, 0))) == RECORD_TYPE)
+ {
+ tree nextf = DECL_CHAIN (TREE_OPERAND (ref, 1));
+ while (nextf && TREE_CODE (nextf) != FIELD_DECL)
+ nextf = DECL_CHAIN (nextf);
+ if (nextf)
+ return false;
+ }
}
+ /* If we have a multi-dimensional array we do not consider
+ a non-innermost dimension as flex array if the whole
+ multi-dimensional array is at struct end.
+ Same for an array of aggregates with a trailing array
+ member. */
+ else if (TREE_CODE (ref) == ARRAY_REF)
+ return false;
+ else if (TREE_CODE (ref) == ARRAY_RANGE_REF)
+ ;
+ /* If we view an underlying object as sth else then what we
+ gathered up to now is what we have to rely on. */
+ else if (TREE_CODE (ref) == VIEW_CONVERT_EXPR)
+ break;
+ else
+ gcc_unreachable ();
ref = TREE_OPERAND (ref, 0);
}
+ /* The array now is at struct end. Treat flexible arrays as
+ always subject to extend, even into just padding constrained by
+ an underlying decl. */
+ if (! TYPE_SIZE (atype))
+ return true;
+
tree size = NULL;
if (TREE_CODE (ref) == MEM_REF
- aggregates may have new TYPE_FIELDS list that list variants of
the main variant TYPE_FIELDS.
- vector types may differ by TYPE_VECTOR_OPAQUE
- - TYPE_METHODS is always NULL for variant types and maintained for
- main variant only.
*/
/* Convenience macro for matching individual fields. */
}
if (TREE_CODE (t) == METHOD_TYPE)
verify_variant_match (TYPE_METHOD_BASETYPE);
- if (RECORD_OR_UNION_TYPE_P (t) && TYPE_METHODS (t))
- {
- error ("type variant has TYPE_METHODS");
- debug_tree (tv);
- return false;
- }
if (TREE_CODE (t) == OFFSET_TYPE)
verify_variant_match (TYPE_OFFSET_BASETYPE);
if (TREE_CODE (t) == ARRAY_TYPE)
}
- /* Check various uses of TYPE_MINVAL. */
+ /* Check various uses of TYPE_MIN_VALUE_RAW. */
if (RECORD_OR_UNION_TYPE_P (t))
{
/* FIXME: C FE uses TYPE_VFIELD to record C_TYPE_INCOMPLETE_VARS
TREE_TYPE (TYPE_MIN_VALUE (t))
but does not for C sizetypes in LTO. */
}
- /* Java uses TYPE_MINVAL for TYPE_ARGUMENT_SIGNATURE. */
- else if (TYPE_MINVAL (t)
- && ((TREE_CODE (t) != METHOD_TYPE && TREE_CODE (t) != FUNCTION_TYPE)
- || in_lto_p))
- {
- error ("TYPE_MINVAL non-NULL");
- debug_tree (TYPE_MINVAL (t));
- error_found = true;
- }
- /* Check various uses of TYPE_MAXVAL. */
+ /* Check various uses of TYPE_MAXVAL_RAW. */
if (RECORD_OR_UNION_TYPE_P (t))
{
- if (TYPE_METHODS (t) && TREE_CODE (TYPE_METHODS (t)) != FUNCTION_DECL
- && TREE_CODE (TYPE_METHODS (t)) != TEMPLATE_DECL
- && TYPE_METHODS (t) != error_mark_node)
+ if (!TYPE_BINFO (t))
+ ;
+ else if (TREE_CODE (TYPE_BINFO (t)) != TREE_BINFO)
{
- error ("TYPE_METHODS is not FUNCTION_DECL, TEMPLATE_DECL nor error_mark_node");
- debug_tree (TYPE_METHODS (t));
+ error ("TYPE_BINFO is not TREE_BINFO");
+ debug_tree (TYPE_BINFO (t));
+ error_found = true;
+ }
+ else if (TREE_TYPE (TYPE_BINFO (t)) != TYPE_MAIN_VARIANT (t))
+ {
+ error ("TYPE_BINFO type is not TYPE_MAIN_VARIANT");
+ debug_tree (TREE_TYPE (TYPE_BINFO (t)));
error_found = true;
}
}
error_found = true;
}
}
- else if (TYPE_MAXVAL (t))
+ else if (TYPE_MAX_VALUE_RAW (t))
{
- error ("TYPE_MAXVAL non-NULL");
- debug_tree (TYPE_MAXVAL (t));
+ error ("TYPE_MAX_VALUE_RAW non-NULL");
+ debug_tree (TYPE_MAX_VALUE_RAW (t));
error_found = true;
}
- /* Check various uses of TYPE_BINFO. */
- if (RECORD_OR_UNION_TYPE_P (t))
- {
- if (!TYPE_BINFO (t))
- ;
- else if (TREE_CODE (TYPE_BINFO (t)) != TREE_BINFO)
- {
- error ("TYPE_BINFO is not TREE_BINFO");
- debug_tree (TYPE_BINFO (t));
- error_found = true;
- }
- /* FIXME: Java builds invalid empty binfos that do not have
- TREE_TYPE set. */
- else if (TREE_TYPE (TYPE_BINFO (t)) != TYPE_MAIN_VARIANT (t) && 0)
- {
- error ("TYPE_BINFO type is not TYPE_MAIN_VARIANT");
- debug_tree (TREE_TYPE (TYPE_BINFO (t)));
- error_found = true;
- }
- }
- else if (TYPE_LANG_SLOT_1 (t) && in_lto_p)
+ if (TYPE_LANG_SLOT_1 (t) && in_lto_p)
{
error ("TYPE_LANG_SLOT_1 (binfo) field is non-NULL");
debug_tree (TYPE_LANG_SLOT_1 (t));
;
else if (TREE_CODE (fld) == USING_DECL)
;
+ else if (TREE_CODE (fld) == FUNCTION_DECL)
+ ;
else
{
error ("Wrong tree in TYPE_FIELDS list");
error ("TYPE_STRING_FLAG is set on wrong type code");
error_found = true;
}
- else if (TYPE_STRING_FLAG (t))
- {
- const_tree b = t;
- if (TREE_CODE (b) == ARRAY_TYPE)
- b = TREE_TYPE (t);
- /* Java builds arrays with TYPE_STRING_FLAG of promoted_char_type
- that is 32bits. */
- if (TREE_CODE (b) != INTEGER_TYPE)
- {
- error ("TYPE_STRING_FLAG is set on type that does not look like "
- "char nor array of chars");
- error_found = true;
- }
- }
/* ipa-devirt makes an assumption that TYPE_METHOD_BASETYPE is always
TYPE_MAIN_VARIANT and it would be odd to add methods only to variatns
}
+/* Return 1 if ARG interpreted as signed in its precision is known to be
+ always positive or 2 if ARG is known to be always negative, or 3 if
+ ARG may be positive or negative. */
+
+int
+get_range_pos_neg (tree arg)
+{
+ if (arg == error_mark_node)
+ return 3;
+
+ int prec = TYPE_PRECISION (TREE_TYPE (arg));
+ int cnt = 0;
+ if (TREE_CODE (arg) == INTEGER_CST)
+ {
+ wide_int w = wi::sext (arg, prec);
+ if (wi::neg_p (w))
+ return 2;
+ else
+ return 1;
+ }
+ while (CONVERT_EXPR_P (arg)
+ && INTEGRAL_TYPE_P (TREE_TYPE (TREE_OPERAND (arg, 0)))
+ && TYPE_PRECISION (TREE_TYPE (TREE_OPERAND (arg, 0))) <= prec)
+ {
+ arg = TREE_OPERAND (arg, 0);
+ /* Narrower value zero extended into wider type
+ will always result in positive values. */
+ if (TYPE_UNSIGNED (TREE_TYPE (arg))
+ && TYPE_PRECISION (TREE_TYPE (arg)) < prec)
+ return 1;
+ prec = TYPE_PRECISION (TREE_TYPE (arg));
+ if (++cnt > 30)
+ return 3;
+ }
+
+ if (TREE_CODE (arg) != SSA_NAME)
+ return 3;
+ wide_int arg_min, arg_max;
+ while (get_range_info (arg, &arg_min, &arg_max) != VR_RANGE)
+ {
+ gimple *g = SSA_NAME_DEF_STMT (arg);
+ if (is_gimple_assign (g)
+ && CONVERT_EXPR_CODE_P (gimple_assign_rhs_code (g)))
+ {
+ tree t = gimple_assign_rhs1 (g);
+ if (INTEGRAL_TYPE_P (TREE_TYPE (t))
+ && TYPE_PRECISION (TREE_TYPE (t)) <= prec)
+ {
+ if (TYPE_UNSIGNED (TREE_TYPE (t))
+ && TYPE_PRECISION (TREE_TYPE (t)) < prec)
+ return 1;
+ prec = TYPE_PRECISION (TREE_TYPE (t));
+ arg = t;
+ if (++cnt > 30)
+ return 3;
+ continue;
+ }
+ }
+ return 3;
+ }
+ if (TYPE_UNSIGNED (TREE_TYPE (arg)))
+ {
+ /* For unsigned values, the "positive" range comes
+ below the "negative" range. */
+ if (!wi::neg_p (wi::sext (arg_max, prec), SIGNED))
+ return 1;
+ if (wi::neg_p (wi::sext (arg_min, prec), SIGNED))
+ return 2;
+ }
+ else
+ {
+ if (!wi::neg_p (wi::sext (arg_min, prec), SIGNED))
+ return 1;
+ if (wi::neg_p (wi::sext (arg_max, prec), SIGNED))
+ return 2;
+ }
+ return 3;
+}
+
+
+
+
/* Return true if ARG is marked with the nonnull attribute in the
current function signature. */
return argmap;
}
+/* List of pointer types used to declare builtins before we have seen their
+ real declaration.
+
+ Keep the size up to date in tree.h ! */
+const builtin_structptr_type builtin_structptr_types[6] =
+{
+ { fileptr_type_node, ptr_type_node, "FILE" },
+ { const_tm_ptr_type_node, const_ptr_type_node, "tm" },
+ { fenv_t_ptr_type_node, ptr_type_node, "fenv_t" },
+ { const_fenv_t_ptr_type_node, const_ptr_type_node, "fenv_t" },
+ { fexcept_t_ptr_type_node, ptr_type_node, "fexcept_t" },
+ { const_fexcept_t_ptr_type_node, const_ptr_type_node, "fexcept_t" }
+};
+
#if CHECKING_P
namespace selftest {
projects / platform / upstream / gcc.git / blobdiff