/* Language-independent node constructors for parse phase of GNU compiler.
Copyright (C) 1987, 1988, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
- 1999, 2000, 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
+ 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
+ Free Software Foundation, Inc.
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
-Software Foundation; either version 2, or (at your option) any later
+Software Foundation; either version 3, or (at your option) any later
version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
for more details.
You should have received a copy of the GNU General Public License
-along with GCC; see the file COPYING. If not, write to the Free
-Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
-02110-1301, USA. */
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
/* This file contains the low level primitives for operating on tree nodes,
including allocation, list operations, interning of identifiers,
#include "tree-flow.h"
#include "params.h"
#include "pointer-set.h"
+#include "fixed-value.h"
/* Each tree code class has an associated string representation.
These must correspond to the tree_code_class entries. */
"unary",
"binary",
"statement",
+ "vl_exp",
"expression",
+ "gimple_stmt"
};
/* obstack.[ch] explicitly declined to prototype this. */
"constructors",
"random kinds",
"lang_decl kinds",
- "lang_type kinds"
+ "lang_type kinds",
+ "omp clauses",
+ "gimple statements"
};
#endif /* GATHER_STATISTICS */
/* Unique id for next type created. */
static GTY(()) int next_type_uid = 1;
+/* Mapping from unique DECL_UID to the decl tree node. */
+static GTY ((if_marked ("ggc_marked_p"), param_is (union tree_node)))
+ htab_t decl_for_uid_map;
+
+static void insert_decl_to_uid_decl_map (tree);
+
/* Since we cannot rehash a type after it is in the table, we have to
keep the hash code. */
static GTY ((if_marked ("tree_map_marked_p"), param_is (struct tree_map)))
htab_t value_expr_for_decl;
-static GTY ((if_marked ("tree_int_map_marked_p"), param_is (struct tree_int_map)))
+static GTY ((if_marked ("tree_priority_map_marked_p"),
+ param_is (struct tree_priority_map)))
htab_t init_priority_for_decl;
-struct tree_int_map GTY(())
-{
- tree from;
- unsigned short to;
-};
-static unsigned int tree_int_map_hash (const void *);
-static int tree_int_map_eq (const void *, const void *);
-static int tree_int_map_marked_p (const void *);
+static GTY ((if_marked ("tree_map_marked_p"), param_is (struct tree_map)))
+ htab_t restrict_base_for_decl;
+
static void set_type_quals (tree, int);
static int type_hash_eq (const void *, const void *);
static hashval_t type_hash_hash (const void *);
static void print_type_hash_statistics (void);
static void print_debug_expr_statistics (void);
static void print_value_expr_statistics (void);
-static tree make_vector_type (tree, int, enum machine_mode);
static int type_hash_marked_p (const void *);
-static unsigned int type_hash_list (tree, hashval_t);
-static unsigned int attribute_hash_list (tree, hashval_t);
+static unsigned int type_hash_list (const_tree, hashval_t);
+static unsigned int attribute_hash_list (const_tree, hashval_t);
tree global_trees[TI_MAX];
tree integer_types[itk_none];
-unsigned char tree_contains_struct[256][64];
+unsigned char tree_contains_struct[MAX_TREE_CODES][64];
+
+/* Number of operands for each OpenMP clause. */
+unsigned const char omp_clause_num_ops[] =
+{
+ 0, /* OMP_CLAUSE_ERROR */
+ 1, /* OMP_CLAUSE_PRIVATE */
+ 1, /* OMP_CLAUSE_SHARED */
+ 1, /* OMP_CLAUSE_FIRSTPRIVATE */
+ 1, /* OMP_CLAUSE_LASTPRIVATE */
+ 4, /* OMP_CLAUSE_REDUCTION */
+ 1, /* OMP_CLAUSE_COPYIN */
+ 1, /* OMP_CLAUSE_COPYPRIVATE */
+ 1, /* OMP_CLAUSE_IF */
+ 1, /* OMP_CLAUSE_NUM_THREADS */
+ 1, /* OMP_CLAUSE_SCHEDULE */
+ 0, /* OMP_CLAUSE_NOWAIT */
+ 0, /* OMP_CLAUSE_ORDERED */
+ 0 /* OMP_CLAUSE_DEFAULT */
+};
+
+const char * const omp_clause_code_name[] =
+{
+ "error_clause",
+ "private",
+ "shared",
+ "firstprivate",
+ "lastprivate",
+ "reduction",
+ "copyin",
+ "copyprivate",
+ "if",
+ "num_threads",
+ "schedule",
+ "nowait",
+ "ordered",
+ "default"
+};
\f
/* Init tree.c. */
void
init_ttree (void)
{
-
/* Initialize the hash table of types. */
type_hash_table = htab_create_ggc (TYPE_HASH_INITIAL_SIZE, type_hash_hash,
type_hash_eq, 0);
value_expr_for_decl = htab_create_ggc (512, tree_map_hash,
tree_map_eq, 0);
- init_priority_for_decl = htab_create_ggc (512, tree_int_map_hash,
- tree_int_map_eq, 0);
+ init_priority_for_decl = htab_create_ggc (512, tree_priority_map_hash,
+ tree_priority_map_eq, 0);
+ restrict_base_for_decl = htab_create_ggc (256, tree_map_hash,
+ tree_map_eq, 0);
int_cst_hash_table = htab_create_ggc (1024, int_cst_hash_hash,
int_cst_hash_eq, NULL);
int_cst_node = make_node (INTEGER_CST);
+ decl_for_uid_map = htab_create_ggc (4093, uid_decl_map_hash,
+ uid_decl_map_eq, NULL);
+
tree_contains_struct[FUNCTION_DECL][TS_DECL_NON_COMMON] = 1;
tree_contains_struct[TRANSLATION_UNIT_DECL][TS_DECL_NON_COMMON] = 1;
tree_contains_struct[TYPE_DECL][TS_DECL_NON_COMMON] = 1;
tree_contains_struct[TRANSLATION_UNIT_DECL][TS_DECL_MINIMAL] = 1;
tree_contains_struct[LABEL_DECL][TS_DECL_MINIMAL] = 1;
tree_contains_struct[FIELD_DECL][TS_DECL_MINIMAL] = 1;
+ tree_contains_struct[STRUCT_FIELD_TAG][TS_DECL_MINIMAL] = 1;
+ tree_contains_struct[NAME_MEMORY_TAG][TS_DECL_MINIMAL] = 1;
+ tree_contains_struct[SYMBOL_MEMORY_TAG][TS_DECL_MINIMAL] = 1;
+ tree_contains_struct[MEMORY_PARTITION_TAG][TS_DECL_MINIMAL] = 1;
+
+ tree_contains_struct[STRUCT_FIELD_TAG][TS_MEMORY_TAG] = 1;
+ tree_contains_struct[NAME_MEMORY_TAG][TS_MEMORY_TAG] = 1;
+ tree_contains_struct[SYMBOL_MEMORY_TAG][TS_MEMORY_TAG] = 1;
+ tree_contains_struct[MEMORY_PARTITION_TAG][TS_MEMORY_TAG] = 1;
+
+ tree_contains_struct[STRUCT_FIELD_TAG][TS_STRUCT_FIELD_TAG] = 1;
+ tree_contains_struct[MEMORY_PARTITION_TAG][TS_MEMORY_PARTITION_TAG] = 1;
tree_contains_struct[VAR_DECL][TS_DECL_WITH_VIS] = 1;
tree_contains_struct[FUNCTION_DECL][TS_DECL_WITH_VIS] = 1;
return DECL_WITH_VIS_CHECK (decl)->decl_with_vis.assembler_name;
}
+/* Compare ASMNAME with the DECL_ASSEMBLER_NAME of DECL. */
+
+bool
+decl_assembler_name_equal (tree decl, tree asmname)
+{
+ tree decl_asmname = DECL_ASSEMBLER_NAME (decl);
+
+ if (decl_asmname == asmname)
+ return true;
+
+ /* If the target assembler name was set by the user, things are trickier.
+ We have a leading '*' to begin with. After that, it's arguable what
+ is the correct thing to do with -fleading-underscore. Arguably, we've
+ historically been doing the wrong thing in assemble_alias by always
+ printing the leading underscore. Since we're not changing that, make
+ sure user_label_prefix follows the '*' before matching. */
+ if (IDENTIFIER_POINTER (decl_asmname)[0] == '*')
+ {
+ const char *decl_str = IDENTIFIER_POINTER (decl_asmname) + 1;
+ size_t ulp_len = strlen (user_label_prefix);
+
+ if (ulp_len == 0)
+ ;
+ else if (strncmp (decl_str, user_label_prefix, ulp_len) == 0)
+ decl_str += ulp_len;
+ else
+ return false;
+
+ return strcmp (decl_str, IDENTIFIER_POINTER (asmname)) == 0;
+ }
+
+ return false;
+}
+
/* Compute the number of bytes occupied by a tree with code CODE.
- This function cannot be used for TREE_VEC, PHI_NODE, or STRING_CST
- codes, which are of variable length. */
+ This function cannot be used for nodes that have variable sizes,
+ including TREE_VEC, PHI_NODE, STRING_CST, and CALL_EXPR. */
size_t
tree_code_size (enum tree_code code)
{
return sizeof (struct tree_type_decl);
case FUNCTION_DECL:
return sizeof (struct tree_function_decl);
+ case NAME_MEMORY_TAG:
+ case SYMBOL_MEMORY_TAG:
+ return sizeof (struct tree_memory_tag);
+ case STRUCT_FIELD_TAG:
+ return sizeof (struct tree_struct_field_tag);
+ case MEMORY_PARTITION_TAG:
+ return sizeof (struct tree_memory_partition_tag);
default:
return sizeof (struct tree_decl_non_common);
}
case tcc_unary: /* a unary arithmetic expression */
case tcc_binary: /* a binary arithmetic expression */
return (sizeof (struct tree_exp)
+ + (TREE_CODE_LENGTH (code) - 1) * sizeof (tree));
+
+ case tcc_gimple_stmt:
+ return (sizeof (struct gimple_stmt)
+ (TREE_CODE_LENGTH (code) - 1) * sizeof (char *));
case tcc_constant: /* a constant */
{
case INTEGER_CST: return sizeof (struct tree_int_cst);
case REAL_CST: return sizeof (struct tree_real_cst);
+ case FIXED_CST: return sizeof (struct tree_fixed_cst);
case COMPLEX_CST: return sizeof (struct tree_complex);
case VECTOR_CST: return sizeof (struct tree_vector);
case STRING_CST: gcc_unreachable ();
case PLACEHOLDER_EXPR: return sizeof (struct tree_common);
case TREE_VEC:
+ case OMP_CLAUSE:
case PHI_NODE: gcc_unreachable ();
case SSA_NAME: return sizeof (struct tree_ssa_name);
}
/* Compute the number of bytes occupied by NODE. This routine only
- looks at TREE_CODE, except for PHI_NODE and TREE_VEC nodes. */
+ looks at TREE_CODE, except for those nodes that have variable sizes. */
size_t
-tree_size (tree node)
+tree_size (const_tree node)
{
- enum tree_code code = TREE_CODE (node);
+ const enum tree_code code = TREE_CODE (node);
switch (code)
{
case PHI_NODE:
case TREE_VEC:
return (sizeof (struct tree_vec)
- + (TREE_VEC_LENGTH (node) - 1) * sizeof(char *));
+ + (TREE_VEC_LENGTH (node) - 1) * sizeof (tree));
case STRING_CST:
- return sizeof (struct tree_string) + TREE_STRING_LENGTH (node) - 1;
+ return TREE_STRING_LENGTH (node) + offsetof (struct tree_string, str) + 1;
+
+ case OMP_CLAUSE:
+ return (sizeof (struct tree_omp_clause)
+ + (omp_clause_num_ops[OMP_CLAUSE_CODE (node)] - 1)
+ * sizeof (tree));
default:
- return tree_code_size (code);
+ if (TREE_CODE_CLASS (code) == tcc_vl_exp)
+ return (sizeof (struct tree_exp)
+ + (VL_EXP_OPERAND_LENGTH (node) - 1) * sizeof (tree));
+ else
+ return tree_code_size (code);
}
}
/* Return a newly allocated node of code CODE. For decl and type
nodes, some other fields are initialized. The rest of the node is
- initialized to zero. This function cannot be used for PHI_NODE or
- TREE_VEC nodes, which is enforced by asserts in tree_code_size.
+ initialized to zero. This function cannot be used for PHI_NODE,
+ TREE_VEC or OMP_CLAUSE nodes, which is enforced by asserts in
+ tree_code_size.
Achoo! I got a code in the node. */
kind = c_kind;
break;
+ case tcc_gimple_stmt:
+ kind = gimple_stmt_kind;
+ break;
+
case tcc_exceptional: /* something random, like an identifier. */
switch (code)
{
break;
case tcc_declaration:
- if (code != FUNCTION_DECL)
- DECL_ALIGN (t) = 1;
- DECL_USER_ALIGN (t) = 0;
if (CODE_CONTAINS_STRUCT (code, TS_DECL_WITH_VIS))
DECL_IN_SYSTEM_HEADER (t) = in_system_header;
- /* We have not yet computed the alias set for this declaration. */
- DECL_POINTER_ALIAS_SET (t) = -1;
+ if (CODE_CONTAINS_STRUCT (code, TS_DECL_COMMON))
+ {
+ if (code == FUNCTION_DECL)
+ {
+ DECL_ALIGN (t) = FUNCTION_BOUNDARY;
+ DECL_MODE (t) = FUNCTION_MODE;
+ }
+ else
+ DECL_ALIGN (t) = 1;
+ /* We have not yet computed the alias set for this declaration. */
+ DECL_POINTER_ALIAS_SET (t) = -1;
+ }
DECL_SOURCE_LOCATION (t) = input_location;
DECL_UID (t) = next_decl_uid++;
+ insert_decl_to_uid_decl_map (t);
break;
TYPE_ALIGN (t) = BITS_PER_UNIT;
TYPE_USER_ALIGN (t) = 0;
TYPE_MAIN_VARIANT (t) = t;
+ TYPE_CANONICAL (t) = t;
/* Default to no attributes for type, but let target change that. */
TYPE_ATTRIBUTES (t) = NULL_TREE;
}
break;
+ case tcc_gimple_stmt:
+ switch (code)
+ {
+ case GIMPLE_MODIFY_STMT:
+ TREE_SIDE_EFFECTS (t) = 1;
+ break;
+
+ default:
+ break;
+ }
+
default:
/* Other classes need no special treatment. */
break;
t = ggc_alloc_zone_pass_stat (length, &tree_zone);
memcpy (t, node, length);
- TREE_CHAIN (t) = 0;
+ if (!GIMPLE_TUPLE_P (node))
+ TREE_CHAIN (t) = 0;
TREE_ASM_WRITTEN (t) = 0;
TREE_VISITED (t) = 0;
- t->common.ann = 0;
+ t->base.ann = 0;
if (TREE_CODE_CLASS (code) == tcc_declaration)
{
SET_DECL_INIT_PRIORITY (t, DECL_INIT_PRIORITY (node));
DECL_HAS_INIT_PRIORITY_P (t) = 1;
}
-
+ if (TREE_CODE (node) == VAR_DECL && DECL_BASED_ON_RESTRICT_P (node))
+ {
+ SET_DECL_RESTRICT_BASE (t, DECL_GET_RESTRICT_BASE (node));
+ DECL_BASED_ON_RESTRICT_P (t) = 1;
+ }
+ insert_decl_to_uid_decl_map (t);
}
else if (TREE_CODE_CLASS (code) == tcc_type)
{
tree
build_int_cst (tree type, HOST_WIDE_INT low)
{
+ /* Support legacy code. */
+ if (!type)
+ type = integer_type_node;
+
return build_int_cst_wide (type, low, low < 0 ? -1 : 0);
}
tree
build_int_cst_type (tree type, HOST_WIDE_INT low)
{
- unsigned HOST_WIDE_INT val = (unsigned HOST_WIDE_INT) low;
- unsigned HOST_WIDE_INT hi, mask;
- unsigned bits;
- bool signed_p;
- bool negative;
-
- if (!type)
- type = integer_type_node;
-
- bits = TYPE_PRECISION (type);
- signed_p = !TYPE_UNSIGNED (type);
-
- if (bits >= HOST_BITS_PER_WIDE_INT)
- negative = (low < 0);
- else
- {
- /* If the sign bit is inside precision of LOW, use it to determine
- the sign of the constant. */
- negative = ((val >> (bits - 1)) & 1) != 0;
+ unsigned HOST_WIDE_INT low1;
+ HOST_WIDE_INT hi;
- /* Mask out the bits outside of the precision of the constant. */
- mask = (((unsigned HOST_WIDE_INT) 2) << (bits - 1)) - 1;
+ gcc_assert (type);
- if (signed_p && negative)
- val |= ~mask;
- else
- val &= mask;
- }
+ fit_double_type (low, low < 0 ? -1 : 0, &low1, &hi, type);
- /* Determine the high bits. */
- hi = (negative ? ~(unsigned HOST_WIDE_INT) 0 : 0);
+ return build_int_cst_wide (type, low1, hi);
+}
- /* For unsigned type we need to mask out the bits outside of the type
- precision. */
- if (!signed_p)
- {
- if (bits <= HOST_BITS_PER_WIDE_INT)
- hi = 0;
- else
- {
- bits -= HOST_BITS_PER_WIDE_INT;
- mask = (((unsigned HOST_WIDE_INT) 2) << (bits - 1)) - 1;
- hi &= mask;
- }
- }
+/* Create an INT_CST node of TYPE and value HI:LOW. The value is truncated
+ and sign extended according to the value range of TYPE. */
- return build_int_cst_wide (type, val, hi);
+tree
+build_int_cst_wide_type (tree type,
+ unsigned HOST_WIDE_INT low, HOST_WIDE_INT high)
+{
+ fit_double_type (low, high, &low, &high, type);
+ return build_int_cst_wide (type, low, high);
}
/* These are the hash table functions for the hash table of INTEGER_CST
static hashval_t
int_cst_hash_hash (const void *x)
{
- tree t = (tree) x;
+ const_tree const t = (const_tree) x;
return (TREE_INT_CST_HIGH (t) ^ TREE_INT_CST_LOW (t)
^ htab_hash_pointer (TREE_TYPE (t)));
static int
int_cst_hash_eq (const void *x, const void *y)
{
- tree xt = (tree) x;
- tree yt = (tree) y;
+ const_tree const xt = (const_tree) x;
+ const_tree const yt = (const_tree) y;
return (TREE_TYPE (xt) == TREE_TYPE (yt)
&& TREE_INT_CST_HIGH (xt) == TREE_INT_CST_HIGH (yt)
&& TREE_INT_CST_LOW (xt) == TREE_INT_CST_LOW (yt));
}
-/* Create an INT_CST node of TYPE and value HI:LOW. If TYPE is NULL,
- integer_type_node is used. The returned node is always shared.
- For small integers we use a per-type vector cache, for larger ones
- we use a single hash table. */
+/* Create an INT_CST node of TYPE and value HI:LOW.
+ The returned node is always shared. For small integers we use a
+ per-type vector cache, for larger ones we use a single hash table. */
tree
build_int_cst_wide (tree type, unsigned HOST_WIDE_INT low, HOST_WIDE_INT hi)
int ix = -1;
int limit = 0;
- if (!type)
- type = integer_type_node;
+ gcc_assert (type);
switch (TREE_CODE (type))
{
break;
case INTEGER_TYPE:
- case CHAR_TYPE:
case OFFSET_TYPE:
if (TYPE_UNSIGNED (type))
{
ix = 0;
}
break;
- default:
+
+ case ENUMERAL_TYPE:
break;
+
+ default:
+ gcc_unreachable ();
}
if (ix >= 0)
HOST_WIDE_INT without loss of precision. */
bool
-cst_and_fits_in_hwi (tree x)
+cst_and_fits_in_hwi (const_tree x)
{
if (TREE_CODE (x) != INTEGER_CST)
return false;
build_vector (tree type, tree vals)
{
tree v = make_node (VECTOR_CST);
- int over1 = 0, over2 = 0;
+ int over = 0;
tree link;
TREE_VECTOR_CST_ELTS (v) = vals;
{
tree value = TREE_VALUE (link);
- over1 |= TREE_OVERFLOW (value);
- over2 |= TREE_CONSTANT_OVERFLOW (value);
- }
+ /* Don't crash if we get an address constant. */
+ if (!CONSTANT_CLASS_P (value))
+ continue;
- TREE_OVERFLOW (v) = over1;
- TREE_CONSTANT_OVERFLOW (v) = over2;
+ over |= TREE_OVERFLOW (value);
+ }
+ TREE_OVERFLOW (v) = over;
return v;
}
{
VEC(constructor_elt,gc) *v;
constructor_elt *elt;
+ tree t;
v = VEC_alloc (constructor_elt, gc, 1);
elt = VEC_quick_push (constructor_elt, v, NULL);
elt->index = index;
elt->value = value;
- return build_constructor (type, v);
+ t = build_constructor (type, v);
+ TREE_CONSTANT (t) = TREE_CONSTANT (value);
+ return t;
}
tree
build_constructor_from_list (tree type, tree vals)
{
- tree t;
+ tree t, val;
VEC(constructor_elt,gc) *v = NULL;
+ bool constant_p = true;
if (vals)
{
for (t = vals; t; t = TREE_CHAIN (t))
{
constructor_elt *elt = VEC_quick_push (constructor_elt, v, NULL);
+ val = TREE_VALUE (t);
elt->index = TREE_PURPOSE (t);
- elt->value = TREE_VALUE (t);
+ elt->value = val;
+ if (!TREE_CONSTANT (val))
+ constant_p = false;
}
}
- return build_constructor (type, v);
+ t = build_constructor (type, v);
+ TREE_CONSTANT (t) = constant_p;
+ return t;
}
+/* Return a new FIXED_CST node whose type is TYPE and value is F. */
+
+tree
+build_fixed (tree type, FIXED_VALUE_TYPE f)
+{
+ tree v;
+ FIXED_VALUE_TYPE *fp;
+
+ v = make_node (FIXED_CST);
+ fp = ggc_alloc (sizeof (FIXED_VALUE_TYPE));
+ memcpy (fp, &f, sizeof (FIXED_VALUE_TYPE));
+
+ TREE_TYPE (v) = type;
+ TREE_FIXED_CST_PTR (v) = fp;
+ return v;
+}
/* Return a new REAL_CST node whose type is TYPE and value is D. */
TREE_TYPE (v) = type;
TREE_REAL_CST_PTR (v) = dp;
- TREE_OVERFLOW (v) = TREE_CONSTANT_OVERFLOW (v) = overflow;
+ TREE_OVERFLOW (v) = overflow;
return v;
}
and whose value is the integer value of the INTEGER_CST node I. */
REAL_VALUE_TYPE
-real_value_from_int_cst (tree type, tree i)
+real_value_from_int_cst (const_tree type, const_tree i)
{
REAL_VALUE_TYPE d;
representing the same value as a floating-point constant of type TYPE. */
tree
-build_real_from_int_cst (tree type, tree i)
+build_real_from_int_cst (tree type, const_tree i)
{
tree v;
int overflow = TREE_OVERFLOW (i);
v = build_real (type, real_value_from_int_cst (type, i));
TREE_OVERFLOW (v) |= overflow;
- TREE_CONSTANT_OVERFLOW (v) |= overflow;
return v;
}
{
tree s;
size_t length;
-
- length = len + sizeof (struct tree_string);
+
+ /* Do not waste bytes provided by padding of struct tree_string. */
+ length = len + offsetof (struct tree_string, str) + 1;
#ifdef GATHER_STATISTICS
tree_node_counts[(int) c_kind]++;
TREE_CONSTANT (s) = 1;
TREE_INVARIANT (s) = 1;
TREE_STRING_LENGTH (s) = len;
- memcpy ((char *) TREE_STRING_POINTER (s), str, len);
- ((char *) TREE_STRING_POINTER (s))[len] = '\0';
+ memcpy (s->string.str, str, len);
+ s->string.str[len] = '\0';
return s;
}
TREE_IMAGPART (t) = imag;
TREE_TYPE (t) = type ? type : build_complex_type (TREE_TYPE (real));
TREE_OVERFLOW (t) = TREE_OVERFLOW (real) | TREE_OVERFLOW (imag);
- TREE_CONSTANT_OVERFLOW (t)
- = TREE_CONSTANT_OVERFLOW (real) | TREE_CONSTANT_OVERFLOW (imag);
return t;
}
+/* Return a constant of arithmetic type TYPE which is the
+ multiplicative identity of the set TYPE. */
+
+tree
+build_one_cst (tree type)
+{
+ switch (TREE_CODE (type))
+ {
+ case INTEGER_TYPE: case ENUMERAL_TYPE: case BOOLEAN_TYPE:
+ case POINTER_TYPE: case REFERENCE_TYPE:
+ case OFFSET_TYPE:
+ return build_int_cst (type, 1);
+
+ case REAL_TYPE:
+ return build_real (type, dconst1);
+
+ case FIXED_POINT_TYPE:
+ /* We can only generate 1 for accum types. */
+ gcc_assert (ALL_SCALAR_ACCUM_MODE_P (TYPE_MODE (type)));
+ return build_fixed (type, FCONST1(TYPE_MODE (type)));
+
+ case VECTOR_TYPE:
+ {
+ tree scalar, cst;
+ int i;
+
+ scalar = build_one_cst (TREE_TYPE (type));
+
+ /* Create 'vect_cst_ = {cst,cst,...,cst}' */
+ cst = NULL_TREE;
+ for (i = TYPE_VECTOR_SUBPARTS (type); --i >= 0; )
+ cst = tree_cons (NULL_TREE, scalar, cst);
+
+ return build_vector (type, cst);
+ }
+
+ case COMPLEX_TYPE:
+ return build_complex (type,
+ build_one_cst (TREE_TYPE (type)),
+ fold_convert (TREE_TYPE (type), integer_zero_node));
+
+ default:
+ gcc_unreachable ();
+ }
+}
+
/* Build a BINFO with LEN language slots. */
tree
of zero. */
int
-integer_zerop (tree expr)
+integer_zerop (const_tree expr)
{
STRIP_NOPS (expr);
return ((TREE_CODE (expr) == INTEGER_CST
- && ! TREE_CONSTANT_OVERFLOW (expr)
&& TREE_INT_CST_LOW (expr) == 0
&& TREE_INT_CST_HIGH (expr) == 0)
|| (TREE_CODE (expr) == COMPLEX_CST
complex constant. */
int
-integer_onep (tree expr)
+integer_onep (const_tree expr)
{
STRIP_NOPS (expr);
return ((TREE_CODE (expr) == INTEGER_CST
- && ! TREE_CONSTANT_OVERFLOW (expr)
&& TREE_INT_CST_LOW (expr) == 1
&& TREE_INT_CST_HIGH (expr) == 0)
|| (TREE_CODE (expr) == COMPLEX_CST
it contains. Likewise for the corresponding complex constant. */
int
-integer_all_onesp (tree expr)
+integer_all_onesp (const_tree expr)
{
int prec;
int uns;
&& integer_zerop (TREE_IMAGPART (expr)))
return 1;
- else if (TREE_CODE (expr) != INTEGER_CST
- || TREE_CONSTANT_OVERFLOW (expr))
+ else if (TREE_CODE (expr) != INTEGER_CST)
return 0;
uns = TYPE_UNSIGNED (TREE_TYPE (expr));
+ if (TREE_INT_CST_LOW (expr) == ~(unsigned HOST_WIDE_INT) 0
+ && TREE_INT_CST_HIGH (expr) == -1)
+ return 1;
if (!uns)
- return (TREE_INT_CST_LOW (expr) == ~(unsigned HOST_WIDE_INT) 0
- && TREE_INT_CST_HIGH (expr) == -1);
+ return 0;
/* Note that using TYPE_PRECISION here is wrong. We care about the
actual bits, not the (arbitrary) range of the type. */
one bit on). */
int
-integer_pow2p (tree expr)
+integer_pow2p (const_tree expr)
{
int prec;
HOST_WIDE_INT high, low;
&& integer_zerop (TREE_IMAGPART (expr)))
return 1;
- if (TREE_CODE (expr) != INTEGER_CST || TREE_CONSTANT_OVERFLOW (expr))
+ if (TREE_CODE (expr) != INTEGER_CST)
return 0;
prec = (POINTER_TYPE_P (TREE_TYPE (expr))
complex constant other than zero. */
int
-integer_nonzerop (tree expr)
+integer_nonzerop (const_tree expr)
{
STRIP_NOPS (expr);
return ((TREE_CODE (expr) == INTEGER_CST
- && ! TREE_CONSTANT_OVERFLOW (expr)
&& (TREE_INT_CST_LOW (expr) != 0
|| TREE_INT_CST_HIGH (expr) != 0))
|| (TREE_CODE (expr) == COMPLEX_CST
|| integer_nonzerop (TREE_IMAGPART (expr)))));
}
+/* Return 1 if EXPR is the fixed-point constant zero. */
+
+int
+fixed_zerop (const_tree expr)
+{
+ return (TREE_CODE (expr) == FIXED_CST
+ && double_int_zero_p (TREE_FIXED_CST (expr).data));
+}
+
/* Return the power of two represented by a tree node known to be a
power of two. */
int
-tree_log2 (tree expr)
+tree_log2 (const_tree expr)
{
int prec;
HOST_WIDE_INT high, low;
than or equal to EXPR. */
int
-tree_floor_log2 (tree expr)
+tree_floor_log2 (const_tree expr)
{
int prec;
HOST_WIDE_INT high, low;
/* Return 1 if EXPR is the real constant zero. */
int
-real_zerop (tree expr)
+real_zerop (const_tree expr)
{
STRIP_NOPS (expr);
return ((TREE_CODE (expr) == REAL_CST
- && ! TREE_CONSTANT_OVERFLOW (expr)
&& REAL_VALUES_EQUAL (TREE_REAL_CST (expr), dconst0))
|| (TREE_CODE (expr) == COMPLEX_CST
&& real_zerop (TREE_REALPART (expr))
/* Return 1 if EXPR is the real constant one in real or complex form. */
int
-real_onep (tree expr)
+real_onep (const_tree expr)
{
STRIP_NOPS (expr);
return ((TREE_CODE (expr) == REAL_CST
- && ! TREE_CONSTANT_OVERFLOW (expr)
&& REAL_VALUES_EQUAL (TREE_REAL_CST (expr), dconst1))
|| (TREE_CODE (expr) == COMPLEX_CST
&& real_onep (TREE_REALPART (expr))
/* Return 1 if EXPR is the real constant two. */
int
-real_twop (tree expr)
+real_twop (const_tree expr)
{
STRIP_NOPS (expr);
return ((TREE_CODE (expr) == REAL_CST
- && ! TREE_CONSTANT_OVERFLOW (expr)
&& REAL_VALUES_EQUAL (TREE_REAL_CST (expr), dconst2))
|| (TREE_CODE (expr) == COMPLEX_CST
&& real_twop (TREE_REALPART (expr))
/* Return 1 if EXPR is the real constant minus one. */
int
-real_minus_onep (tree expr)
+real_minus_onep (const_tree expr)
{
STRIP_NOPS (expr);
return ((TREE_CODE (expr) == REAL_CST
- && ! TREE_CONSTANT_OVERFLOW (expr)
&& REAL_VALUES_EQUAL (TREE_REAL_CST (expr), dconstm1))
|| (TREE_CODE (expr) == COMPLEX_CST
&& real_minus_onep (TREE_REALPART (expr))
/* Nonzero if EXP is a constant or a cast of a constant. */
int
-really_constant_p (tree exp)
+really_constant_p (const_tree exp)
{
/* This is not quite the same as STRIP_NOPS. It does more. */
while (TREE_CODE (exp) == NOP_EXPR
Return 0 if ELEM is not in LIST. */
tree
-purpose_member (tree elem, tree list)
+purpose_member (const_tree elem, tree list)
{
while (list)
{
/* Return nonzero if ELEM is part of the chain CHAIN. */
int
-chain_member (tree elem, tree chain)
+chain_member (const_tree elem, const_tree chain)
{
while (chain)
{
This is the Lisp primitive `length'. */
int
-list_length (tree t)
+list_length (const_tree t)
{
- tree p = t;
+ const_tree p = t;
#ifdef ENABLE_TREE_CHECKING
- tree q = t;
+ const_tree q = t;
#endif
int len = 0;
/* Returns the number of FIELD_DECLs in TYPE. */
int
-fields_length (tree type)
+fields_length (const_tree type)
{
tree t = TYPE_FIELDS (type);
int count = 0;
make_unsigned_type). */
tree
-size_in_bytes (tree type)
+size_in_bytes (const_tree type)
{
tree t;
return size_zero_node;
}
- if (TREE_CODE (t) == INTEGER_CST)
- t = force_fit_type (t, 0, false, false);
-
return t;
}
or return -1 if the size can vary or is larger than an integer. */
HOST_WIDE_INT
-int_size_in_bytes (tree type)
+int_size_in_bytes (const_tree type)
{
tree t;
t = TYPE_SIZE_UNIT (type);
if (t == 0
|| TREE_CODE (t) != INTEGER_CST
- || TREE_OVERFLOW (t)
|| TREE_INT_CST_HIGH (t) != 0
/* If the result would appear negative, it's too big to represent. */
|| (HOST_WIDE_INT) TREE_INT_CST_LOW (t) < 0)
return TREE_INT_CST_LOW (t);
}
+
+/* Return the maximum size of TYPE (in bytes) as a wide integer
+ or return -1 if the size can vary or is larger than an integer. */
+
+HOST_WIDE_INT
+max_int_size_in_bytes (const_tree type)
+{
+ HOST_WIDE_INT size = -1;
+ tree size_tree;
+
+ /* If this is an array type, check for a possible MAX_SIZE attached. */
+
+ if (TREE_CODE (type) == ARRAY_TYPE)
+ {
+ size_tree = TYPE_ARRAY_MAX_SIZE (type);
+
+ if (size_tree && host_integerp (size_tree, 1))
+ size = tree_low_cst (size_tree, 1);
+ }
+
+ /* If we still haven't been able to get a size, see if the language
+ can compute a maximum size. */
+
+ if (size == -1)
+ {
+ size_tree = lang_hooks.types.max_size (type);
+
+ if (size_tree && host_integerp (size_tree, 1))
+ size = tree_low_cst (size_tree, 1);
+ }
+
+ return size;
+}
\f
/* Return the bit position of FIELD, in bits from the start of the record.
This is a tree of type bitsizetype. */
tree
-bit_position (tree field)
+bit_position (const_tree field)
{
return bit_from_pos (DECL_FIELD_OFFSET (field),
DECL_FIELD_BIT_OFFSET (field));
option of returning -1 like int_size_in_byte can. */
HOST_WIDE_INT
-int_bit_position (tree field)
+int_bit_position (const_tree field)
{
return tree_low_cst (bit_position (field), 0);
}
This is a tree of type sizetype. */
tree
-byte_position (tree field)
+byte_position (const_tree field)
{
return byte_from_pos (DECL_FIELD_OFFSET (field),
DECL_FIELD_BIT_OFFSET (field));
option of returning -1 like int_size_in_byte can. */
HOST_WIDE_INT
-int_byte_position (tree field)
+int_byte_position (const_tree field)
{
return tree_low_cst (byte_position (field), 0);
}
/* Return the strictest alignment, in bits, that T is known to have. */
unsigned int
-expr_align (tree t)
+expr_align (const_tree t)
{
unsigned int align0, align1;
align1 = TYPE_ALIGN (TREE_TYPE (t));
return MAX (align0, align1);
+ case GIMPLE_MODIFY_STMT:
+ /* We should never ask for the alignment of a gimple statement. */
+ gcc_unreachable ();
+
case SAVE_EXPR: case COMPOUND_EXPR: case MODIFY_EXPR:
case INIT_EXPR: case TARGET_EXPR: case WITH_CLEANUP_EXPR:
case CLEANUP_POINT_EXPR:
align1 = expr_align (TREE_OPERAND (t, 2));
return MIN (align0, align1);
+ /* FIXME: LABEL_DECL and CONST_DECL never have DECL_ALIGN set
+ meaningfully, it's always 1. */
case LABEL_DECL: case CONST_DECL:
case VAR_DECL: case PARM_DECL: case RESULT_DECL:
- if (DECL_ALIGN (t) != 0)
- return DECL_ALIGN (t);
- break;
-
case FUNCTION_DECL:
- return FUNCTION_BOUNDARY;
+ gcc_assert (DECL_ALIGN (t) != 0);
+ return DECL_ALIGN (t);
default:
break;
ARRAY_TYPE) minus one. This counts only elements of the top array. */
tree
-array_type_nelts (tree type)
+array_type_nelts (const_tree type)
{
tree index_type, min, max;
case VAR_DECL:
return ((TREE_STATIC (arg) || DECL_EXTERNAL (arg))
&& ! DECL_THREAD_LOCAL_P (arg)
- && ! DECL_NON_ADDR_CONST_P (arg)
+ && ! DECL_DLLIMPORT_P (arg)
? arg : NULL);
case CONST_DECL:
/* Return which tree structure is used by T. */
enum tree_node_structure_enum
-tree_node_structure (tree t)
+tree_node_structure (const_tree t)
{
- enum tree_code code = TREE_CODE (t);
+ const enum tree_code code = TREE_CODE (t);
switch (TREE_CODE_CLASS (code))
{
return TS_TYPE_DECL;
case FUNCTION_DECL:
return TS_FUNCTION_DECL;
+ case SYMBOL_MEMORY_TAG:
+ case NAME_MEMORY_TAG:
+ case STRUCT_FIELD_TAG:
+ case MEMORY_PARTITION_TAG:
+ return TS_MEMORY_TAG;
default:
return TS_DECL_NON_COMMON;
}
case tcc_binary:
case tcc_expression:
case tcc_statement:
+ case tcc_vl_exp:
return TS_EXP;
+ case tcc_gimple_stmt:
+ return TS_GIMPLE_STATEMENT;
default: /* tcc_constant and tcc_exceptional */
break;
}
/* tcc_constant cases. */
case INTEGER_CST: return TS_INT_CST;
case REAL_CST: return TS_REAL_CST;
+ case FIXED_CST: return TS_FIXED_CST;
case COMPLEX_CST: return TS_COMPLEX;
case VECTOR_CST: return TS_VECTOR;
case STRING_CST: return TS_STRING;
/* tcc_exceptional cases. */
+ /* FIXME tuples: eventually this should be TS_BASE. For now, nothing
+ returns TS_BASE. */
case ERROR_MARK: return TS_COMMON;
case IDENTIFIER_NODE: return TS_IDENTIFIER;
case TREE_LIST: return TS_LIST;
case CONSTRUCTOR: return TS_CONSTRUCTOR;
case TREE_BINFO: return TS_BINFO;
case VALUE_HANDLE: return TS_VALUE_HANDLE;
+ case OMP_CLAUSE: return TS_OMP_CLAUSE;
default:
gcc_unreachable ();
or offset that depends on a field within a record. */
bool
-contains_placeholder_p (tree exp)
+contains_placeholder_p (const_tree exp)
{
enum tree_code code;
return 0;
}
+ case tcc_vl_exp:
+ switch (code)
+ {
+ case CALL_EXPR:
+ {
+ const_tree arg;
+ const_call_expr_arg_iterator iter;
+ FOR_EACH_CONST_CALL_EXPR_ARG (arg, iter, exp)
+ if (CONTAINS_PLACEHOLDER_P (arg))
+ return 1;
+ return 0;
+ }
+ default:
+ return 0;
+ }
+
default:
return 0;
}
(for QUAL_UNION_TYPE) and field positions. */
static bool
-type_contains_placeholder_1 (tree type)
+type_contains_placeholder_1 (const_tree type)
{
/* If the size contains a placeholder or the parent type (component type in
the case of arrays) type involves a placeholder, this type does. */
case COMPLEX_TYPE:
case ENUMERAL_TYPE:
case BOOLEAN_TYPE:
- case CHAR_TYPE:
case POINTER_TYPE:
case OFFSET_TYPE:
case REFERENCE_TYPE:
case INTEGER_TYPE:
case REAL_TYPE:
+ case FIXED_POINT_TYPE:
/* Here we just check the bounds. */
return (CONTAINS_PLACEHOLDER_P (TYPE_MIN_VALUE (type))
|| CONTAINS_PLACEHOLDER_P (TYPE_MAX_VALUE (type)));
substitute_in_expr (tree exp, tree f, tree r)
{
enum tree_code code = TREE_CODE (exp);
- tree op0, op1, op2;
+ tree op0, op1, op2, op3;
tree new;
tree inner;
new = fold_build3 (code, TREE_TYPE (exp), op0, op1, op2);
break;
+ case 4:
+ op0 = SUBSTITUTE_IN_EXPR (TREE_OPERAND (exp, 0), f, r);
+ op1 = SUBSTITUTE_IN_EXPR (TREE_OPERAND (exp, 1), f, r);
+ op2 = SUBSTITUTE_IN_EXPR (TREE_OPERAND (exp, 2), f, r);
+ op3 = SUBSTITUTE_IN_EXPR (TREE_OPERAND (exp, 3), f, r);
+
+ if (op0 == TREE_OPERAND (exp, 0) && op1 == TREE_OPERAND (exp, 1)
+ && op2 == TREE_OPERAND (exp, 2)
+ && op3 == TREE_OPERAND (exp, 3))
+ return exp;
+
+ new = fold (build4 (code, TREE_TYPE (exp), op0, op1, op2, op3));
+ break;
+
default:
gcc_unreachable ();
}
break;
+ case tcc_vl_exp:
+ {
+ tree copy = NULL_TREE;
+ int i;
+
+ for (i = 1; i < TREE_OPERAND_LENGTH (exp); i++)
+ {
+ tree op = TREE_OPERAND (exp, i);
+ tree newop = SUBSTITUTE_IN_EXPR (op, f, r);
+ if (newop != op)
+ {
+ copy = copy_node (exp);
+ TREE_OPERAND (copy, i) = newop;
+ }
+ }
+ if (copy)
+ new = fold (copy);
+ else
+ return exp;
+ }
+ break;
+
default:
gcc_unreachable ();
}
: (REFERENCE_CLASS_P (elt)
|| UNARY_CLASS_P (elt)
|| BINARY_CLASS_P (elt)
+ || VL_EXP_CLASS_P (elt)
|| EXPRESSION_CLASS_P (elt))
? TREE_OPERAND (elt, 0) : 0))
if (TYPE_MAIN_VARIANT (TREE_TYPE (elt)) == need_type)
: (REFERENCE_CLASS_P (elt)
|| UNARY_CLASS_P (elt)
|| BINARY_CLASS_P (elt)
+ || VL_EXP_CLASS_P (elt)
|| EXPRESSION_CLASS_P (elt))
? TREE_OPERAND (elt, 0) : 0))
if (POINTER_TYPE_P (TREE_TYPE (elt))
}
break;
+ case tcc_vl_exp:
+ {
+ tree copy = NULL_TREE;
+ int i;
+ int n = TREE_OPERAND_LENGTH (exp);
+ for (i = 1; i < n; i++)
+ {
+ tree op = TREE_OPERAND (exp, i);
+ tree newop = SUBSTITUTE_PLACEHOLDER_IN_EXPR (op, obj);
+ if (newop != op)
+ {
+ if (!copy)
+ copy = copy_node (exp);
+ TREE_OPERAND (copy, i) = newop;
+ }
+ }
+ if (copy)
+ return fold (copy);
+ else
+ return exp;
+ }
+
default:
gcc_unreachable ();
}
case CONVERT_EXPR:
case FLOAT_EXPR:
case FIX_TRUNC_EXPR:
- case FIX_FLOOR_EXPR:
- case FIX_ROUND_EXPR:
- case FIX_CEIL_EXPR:
result = build_nt (code, stabilize_reference (TREE_OPERAND (ref, 0)));
break;
case tcc_statement:
case tcc_expression:
case tcc_reference:
+ case tcc_vl_exp:
/* If the expression has side-effects, then encase it in a SAVE_EXPR
so that it will only be evaluated once. */
/* The reference (r) and comparison (<) classes could be handled as
TREE_INVARIANT, and TREE_SIDE_EFFECTS for an ADDR_EXPR. */
void
-recompute_tree_invarant_for_addr_expr (tree t)
+recompute_tree_invariant_for_addr_expr (tree t)
{
tree node;
bool tc = true, ti = true, se = false;
Constants, decls, types and misc nodes cannot be.
We define 5 non-variadic functions, from 0 to 4 arguments. This is
- enough for all extant tree codes. These functions can be called
- directly (preferably!), but can also be obtained via GCC preprocessor
- magic within the build macro. */
+ enough for all extant tree codes. */
tree
build0_stat (enum tree_code code, tree tt MEM_STAT_DECL)
#else
SET_EXPR_LOCUS (t, NULL);
#endif
- TREE_COMPLEXITY (t) = 0;
TREE_OPERAND (t, 0) = node;
TREE_BLOCK (t) = NULL_TREE;
if (node && !TYPE_P (node))
case ADDR_EXPR:
if (node)
- recompute_tree_invarant_for_addr_expr (t);
+ recompute_tree_invariant_for_addr_expr (t);
break;
default:
- if (TREE_CODE_CLASS (code) == tcc_unary
+ if ((TREE_CODE_CLASS (code) == tcc_unary || code == VIEW_CONVERT_EXPR)
&& node && !TYPE_P (node)
&& TREE_CONSTANT (node))
TREE_CONSTANT (t) = 1;
- if (TREE_CODE_CLASS (code) == tcc_unary
+ if ((TREE_CODE_CLASS (code) == tcc_unary || code == VIEW_CONVERT_EXPR)
&& node && TREE_INVARIANT (node))
TREE_INVARIANT (t) = 1;
if (TREE_CODE_CLASS (code) == tcc_reference
gcc_assert (TREE_CODE_LENGTH (code) == 2);
+#if 1
+ /* FIXME tuples: Statement's aren't expressions! */
+ if (code == GIMPLE_MODIFY_STMT)
+ return build_gimple_modify_stmt_stat (arg0, arg1 PASS_MEM_STAT);
+#else
+ /* Must use build_gimple_modify_stmt to construct GIMPLE_MODIFY_STMTs. */
+ gcc_assert (code != GIMPLE_MODIFY_STMT);
+#endif
+
+ if ((code == MINUS_EXPR || code == PLUS_EXPR || code == MULT_EXPR)
+ && arg0 && arg1 && tt && POINTER_TYPE_P (tt))
+ gcc_assert (TREE_CODE (arg0) == INTEGER_CST && TREE_CODE (arg1) == INTEGER_CST);
+
+ if (code == POINTER_PLUS_EXPR && arg0 && arg1 && tt)
+ gcc_assert (POINTER_TYPE_P (tt) && POINTER_TYPE_P (TREE_TYPE (arg0))
+ && INTEGRAL_TYPE_P (TREE_TYPE (arg1))
+ && useless_type_conversion_p (sizetype, TREE_TYPE (arg1)));
+
t = make_node_stat (code PASS_MEM_STAT);
TREE_TYPE (t) = tt;
return t;
}
+
+/* Build a GIMPLE_MODIFY_STMT node. This tree code doesn't have a
+ type, so we can't use build2 (a.k.a. build2_stat). */
+
+tree
+build_gimple_modify_stmt_stat (tree arg0, tree arg1 MEM_STAT_DECL)
+{
+ tree t;
+
+ t = make_node_stat (GIMPLE_MODIFY_STMT PASS_MEM_STAT);
+ /* ?? We don't care about setting flags for tuples... */
+ GIMPLE_STMT_OPERAND (t, 0) = arg0;
+ GIMPLE_STMT_OPERAND (t, 1) = arg1;
+ return t;
+}
+
tree
build3_stat (enum tree_code code, tree tt, tree arg0, tree arg1,
tree arg2 MEM_STAT_DECL)
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);
TREE_TYPE (t) = tt;
- side_effects = TREE_SIDE_EFFECTS (t);
+ /* As a special exception, if COND_EXPR has NULL branches, we
+ assume that it is a gimple statement and always consider
+ it to have side effects. */
+ if (code == COND_EXPR
+ && tt == void_type_node
+ && arg1 == NULL_TREE
+ && arg2 == NULL_TREE)
+ side_effects = true;
+ else
+ side_effects = TREE_SIDE_EFFECTS (t);
PROCESS_ARG(0);
PROCESS_ARG(1);
PROCESS_ARG(2);
- if (code == CALL_EXPR && !side_effects)
- {
- tree node;
- int i;
-
- /* Calls have side-effects, except those to const or
- pure functions. */
- i = call_expr_flags (t);
- if (!(i & (ECF_CONST | ECF_PURE)))
- side_effects = 1;
-
- /* And even those have side-effects if their arguments do. */
- else for (node = arg1; node; node = TREE_CHAIN (node))
- if (TREE_SIDE_EFFECTS (TREE_VALUE (node)))
- {
- side_effects = 1;
- break;
- }
- }
-
TREE_SIDE_EFFECTS (t) = side_effects;
TREE_THIS_VOLATILE (t)
= (TREE_CODE_CLASS (code) == tcc_reference
}
tree
+build5_stat (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, invariant;
+ tree t;
+
+ gcc_assert (TREE_CODE_LENGTH (code) == 5);
+
+ t = make_node_stat (code PASS_MEM_STAT);
+ TREE_TYPE (t) = tt;
+
+ side_effects = TREE_SIDE_EFFECTS (t);
+
+ PROCESS_ARG(0);
+ PROCESS_ARG(1);
+ PROCESS_ARG(2);
+ PROCESS_ARG(3);
+ PROCESS_ARG(4);
+
+ TREE_SIDE_EFFECTS (t) = side_effects;
+ TREE_THIS_VOLATILE (t)
+ = (TREE_CODE_CLASS (code) == tcc_reference
+ && arg0 && TREE_THIS_VOLATILE (arg0));
+
+ return t;
+}
+
+tree
build7_stat (enum tree_code code, tree tt, tree arg0, tree arg1,
tree arg2, tree arg3, tree arg4, tree arg5,
tree arg6 MEM_STAT_DECL)
return t;
}
-/* Backup definition for non-gcc build compilers. */
+/* Similar except don't specify the TREE_TYPE
+ and leave the TREE_SIDE_EFFECTS as 0.
+ It is permissible for arguments to be null,
+ or even garbage if their values do not matter. */
tree
-(build) (enum tree_code code, tree tt, ...)
+build_nt (enum tree_code code, ...)
{
- tree t, arg0, arg1, arg2, arg3, arg4, arg5, arg6;
- int length = TREE_CODE_LENGTH (code);
+ tree t;
+ int length;
+ int i;
va_list p;
- va_start (p, tt);
- switch (length)
- {
- case 0:
- t = build0 (code, tt);
- break;
- case 1:
- arg0 = va_arg (p, tree);
- t = build1 (code, tt, arg0);
- break;
- case 2:
- arg0 = va_arg (p, tree);
- arg1 = va_arg (p, tree);
- t = build2 (code, tt, arg0, arg1);
- break;
- case 3:
- arg0 = va_arg (p, tree);
- arg1 = va_arg (p, tree);
- arg2 = va_arg (p, tree);
- t = build3 (code, tt, arg0, arg1, arg2);
- break;
- case 4:
- arg0 = va_arg (p, tree);
- arg1 = va_arg (p, tree);
- arg2 = va_arg (p, tree);
- arg3 = va_arg (p, tree);
- t = build4 (code, tt, arg0, arg1, arg2, arg3);
- break;
- case 7:
- arg0 = va_arg (p, tree);
- arg1 = va_arg (p, tree);
- arg2 = va_arg (p, tree);
- arg3 = va_arg (p, tree);
- arg4 = va_arg (p, tree);
- arg5 = va_arg (p, tree);
- arg6 = va_arg (p, tree);
- t = build7 (code, tt, arg0, arg1, arg2, arg3, arg4, arg5, arg6);
- break;
- default:
- gcc_unreachable ();
- }
- va_end (p);
+ gcc_assert (TREE_CODE_CLASS (code) != tcc_vl_exp);
+ va_start (p, code);
+
+ t = make_node (code);
+ length = TREE_CODE_LENGTH (code);
+
+ for (i = 0; i < length; i++)
+ TREE_OPERAND (t, i) = va_arg (p, tree);
+
+ va_end (p);
return t;
}
-/* Similar except don't specify the TREE_TYPE
- and leave the TREE_SIDE_EFFECTS as 0.
- It is permissible for arguments to be null,
- or even garbage if their values do not matter. */
+/* Similar to build_nt, but for creating a CALL_EXPR object with
+ ARGLIST passed as a list. */
tree
-build_nt (enum tree_code code, ...)
+build_nt_call_list (tree fn, tree arglist)
{
tree t;
- int length;
int i;
- va_list p;
- va_start (p, code);
+ t = build_vl_exp (CALL_EXPR, list_length (arglist) + 3);
+ CALL_EXPR_FN (t) = fn;
+ CALL_EXPR_STATIC_CHAIN (t) = NULL_TREE;
+ for (i = 0; arglist; arglist = TREE_CHAIN (arglist), i++)
+ CALL_EXPR_ARG (t, i) = TREE_VALUE (arglist);
+ return t;
+}
+\f
+/* Return true if the DECL_UID in both trees are equal. */
- t = make_node (code);
- length = TREE_CODE_LENGTH (code);
+int
+uid_decl_map_eq (const void *va, const void *vb)
+{
+ const_tree a = (const_tree) va;
+ const_tree b = (const_tree) vb;
+ return (a->decl_minimal.uid == b->decl_minimal.uid);
+}
- for (i = 0; i < length; i++)
- TREE_OPERAND (t, i) = va_arg (p, tree);
+/* Hash a tree in a uid_decl_map. */
- va_end (p);
- return t;
+unsigned int
+uid_decl_map_hash (const void *item)
+{
+ return ((const_tree)item)->decl_minimal.uid;
}
-\f
+
+/* Insert the declaration NODE into the map mapping its unique uid
+ back to the tree. */
+
+static void
+insert_decl_to_uid_decl_map (tree node)
+{
+ void **slot;
+ struct tree_decl_minimal key;
+
+ key.uid = DECL_UID (node);
+ slot = htab_find_slot_with_hash (decl_for_uid_map,
+ &key, DECL_UID (node), INSERT);
+
+ /* We should never try to re-insert a decl with the same uid.
+ ??? The C++ frontend breaks this invariant. Hopefully in a
+ non-fatal way, so just overwrite the slot in this case. */
+#if 0
+ gcc_assert (!*slot);
+#endif
+
+ *(tree *)slot = node;
+}
+
+/* Lookup the declaration tree from its unique DECL_UID UID. Returns
+ the tree node with DECL_UID UID or NULL, if this node was collected. */
+
+tree
+lookup_decl_from_uid (int uid)
+{
+ struct tree_decl_minimal key;
+
+ key.uid = uid;
+ return (tree) htab_find_with_hash (decl_for_uid_map, &key, uid);
+}
+
+/* Remove the declaration tree DECL from the global UID to decl map.
+ This needs to be called if you ggc_free a decl tree, otherwise
+ garbage collection will take care of it. */
+
+void
+remove_decl_from_map (tree decl)
+{
+ struct tree_decl_minimal key;
+
+ key.uid = DECL_UID (decl);
+#if ENABLE_CHECKING
+ gcc_assert (decl == htab_find_with_hash (decl_for_uid_map, &key, key.uid));
+#endif
+ htab_remove_elt_with_hash (decl_for_uid_map, &key, key.uid);
+}
+
+/* Print out the statistics for the decl_for_uid_map hash table. */
+
+static void
+print_decl_for_uid_map_statistics (void)
+{
+ fprintf (stderr, "DECL_FOR_UID_MAP hash: size %ld, %ld elements, %f collisions\n",
+ (long) htab_size (decl_for_uid_map),
+ (long) htab_elements (decl_for_uid_map),
+ htab_collisions (decl_for_uid_map));
+}
+
/* Create a DECL_... node of code CODE, name NAME and data type TYPE.
We do NOT enter this node in any sort of symbol table.
if (code == VAR_DECL || code == PARM_DECL || code == RESULT_DECL)
layout_decl (t, 0);
- else if (code == FUNCTION_DECL)
- DECL_MODE (t) = FUNCTION_MODE;
-
- if (CODE_CONTAINS_STRUCT (code, TS_DECL_WITH_VIS))
- {
- /* Set default visibility to whatever the user supplied with
- visibility_specified depending on #pragma GCC visibility. */
- DECL_VISIBILITY (t) = default_visibility;
- DECL_VISIBILITY_SPECIFIED (t) = visibility_options.inpragma;
- }
return t;
}
#if 1 /* ! defined(USE_MAPPED_LOCATION) */
/* ??? gengtype doesn't handle conditionals */
-static GTY(()) tree last_annotated_node;
+static GTY(()) source_locus last_annotated_node;
#endif
#ifdef USE_MAPPED_LOCATION
expand_location (source_location loc)
{
expanded_location xloc;
- if (loc == 0) { xloc.file = NULL; xloc.line = 0; xloc.column = 0; }
+ if (loc == 0)
+ {
+ xloc.file = NULL;
+ xloc.line = 0;
+ xloc.column = 0;
+ }
else
{
- const struct line_map *map = linemap_lookup (&line_table, loc);
+ 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);
void
annotate_with_file_line (tree node, const char *file, int line)
{
+ location_t *new_loc;
+
/* Roughly one percent of the calls to this function are to annotate
a node with the same information already attached to that node!
Just return instead of wasting memory. */
if (EXPR_LOCUS (node)
+ && EXPR_LINENO (node) == line
&& (EXPR_FILENAME (node) == file
- || ! strcmp (EXPR_FILENAME (node), file))
- && EXPR_LINENO (node) == line)
+ || !strcmp (EXPR_FILENAME (node), file)))
{
- last_annotated_node = node;
+ last_annotated_node = EXPR_LOCUS (node);
return;
}
entry cache can reduce the number of allocations by more
than half. */
if (last_annotated_node
- && EXPR_LOCUS (last_annotated_node)
- && (EXPR_FILENAME (last_annotated_node) == file
- || ! strcmp (EXPR_FILENAME (last_annotated_node), file))
- && EXPR_LINENO (last_annotated_node) == line)
+ && last_annotated_node->line == line
+ && (last_annotated_node->file == file
+ || !strcmp (last_annotated_node->file, file)))
{
- SET_EXPR_LOCUS (node, EXPR_LOCUS (last_annotated_node));
+ SET_EXPR_LOCUS (node, last_annotated_node);
return;
}
- SET_EXPR_LOCUS (node, ggc_alloc (sizeof (location_t)));
- EXPR_LINENO (node) = line;
- EXPR_FILENAME (node) = file;
- last_annotated_node = node;
+ new_loc = GGC_NEW (location_t);
+ new_loc->file = file;
+ new_loc->line = line;
+ SET_EXPR_LOCUS (node, new_loc);
+ last_annotated_node = new_loc;
}
void
}
#endif
\f
+/* Source location accessor functions. */
+
+
+/* The source location of this expression. Non-tree_exp nodes such as
+ decls and constants can be shared among multiple locations, so
+ return nothing. */
+location_t
+expr_location (const_tree node)
+{
+#ifdef USE_MAPPED_LOCATION
+ if (GIMPLE_STMT_P (node))
+ return GIMPLE_STMT_LOCUS (node);
+ return EXPR_P (node) ? node->exp.locus : UNKNOWN_LOCATION;
+#else
+ if (GIMPLE_STMT_P (node))
+ return EXPR_HAS_LOCATION (node)
+ ? *GIMPLE_STMT_LOCUS (node) : UNKNOWN_LOCATION;
+ return EXPR_HAS_LOCATION (node) ? *node->exp.locus : UNKNOWN_LOCATION;
+#endif
+}
+
+void
+set_expr_location (tree node, location_t locus)
+{
+#ifdef USE_MAPPED_LOCATION
+ if (GIMPLE_STMT_P (node))
+ GIMPLE_STMT_LOCUS (node) = locus;
+ else
+ EXPR_CHECK (node)->exp.locus = locus;
+#else
+ annotate_with_locus (node, locus);
+#endif
+}
+
+bool
+expr_has_location (const_tree node)
+{
+#ifdef USE_MAPPED_LOCATION
+ return expr_location (node) != UNKNOWN_LOCATION;
+#else
+ return expr_locus (node) != NULL;
+#endif
+}
+
+#ifdef USE_MAPPED_LOCATION
+source_location *
+#else
+source_locus
+#endif
+expr_locus (const_tree node)
+{
+#ifdef USE_MAPPED_LOCATION
+ if (GIMPLE_STMT_P (node))
+ return CONST_CAST (source_location *, &GIMPLE_STMT_LOCUS (node));
+ return (EXPR_P (node)
+ ? CONST_CAST (source_location *, &node->exp.locus)
+ : (source_location *) NULL);
+#else
+ if (GIMPLE_STMT_P (node))
+ return GIMPLE_STMT_LOCUS (node);
+ return EXPR_P (node) ? node->exp.locus : (source_locus) NULL;
+#endif
+}
+
+void
+set_expr_locus (tree node,
+#ifdef USE_MAPPED_LOCATION
+ source_location *loc
+#else
+ source_locus loc
+#endif
+ )
+{
+#ifdef USE_MAPPED_LOCATION
+ if (loc == NULL)
+ {
+ if (GIMPLE_STMT_P (node))
+ GIMPLE_STMT_LOCUS (node) = UNKNOWN_LOCATION;
+ else
+ EXPR_CHECK (node)->exp.locus = UNKNOWN_LOCATION;
+ }
+ else
+ {
+ if (GIMPLE_STMT_P (node))
+ GIMPLE_STMT_LOCUS (node) = *loc;
+ else
+ EXPR_CHECK (node)->exp.locus = *loc;
+ }
+#else
+ if (GIMPLE_STMT_P (node))
+ GIMPLE_STMT_LOCUS (node) = loc;
+ else
+ EXPR_CHECK (node)->exp.locus = loc;
+#endif
+}
+
+/* Return the file name of the location of NODE. */
+const char *
+expr_filename (const_tree node)
+{
+ if (GIMPLE_STMT_P (node))
+ return LOCATION_FILE (location_from_locus (GIMPLE_STMT_LOCUS (node)));
+ return LOCATION_FILE (location_from_locus (EXPR_CHECK (node)->exp.locus));
+}
+
+/* Return the line number of the location of NODE. */
+int
+expr_lineno (const_tree node)
+{
+ if (GIMPLE_STMT_P (node))
+ return LOCATION_LINE (location_from_locus (GIMPLE_STMT_LOCUS (node)));
+ return LOCATION_LINE (location_from_locus (EXPR_CHECK (node)->exp.locus));
+}
+
+\f
/* Return a declaration like DDECL except that its DECL_ATTRIBUTES
is ATTRIBUTE. */
/* Produce good hash value combining PTR and VAL2. */
static inline hashval_t
-iterative_hash_pointer (void *ptr, hashval_t val2)
+iterative_hash_pointer (const void *ptr, hashval_t val2)
{
if (sizeof (ptr) == sizeof (hashval_t))
return iterative_hash_hashval_t ((size_t) ptr, val2);
}
/* Return a type like TTYPE except that its TYPE_ATTRIBUTE
- is ATTRIBUTE.
+ is ATTRIBUTE and its qualifiers are QUALS.
Record such modified types already made so we don't make duplicates. */
-tree
-build_type_attribute_variant (tree ttype, tree attribute)
+static tree
+build_type_attribute_qual_variant (tree ttype, tree attribute, int quals)
{
if (! attribute_list_equal (TYPE_ATTRIBUTES (ttype), attribute))
{
tree ntype;
enum tree_code code = TREE_CODE (ttype);
- ntype = copy_node (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);
+ }
- TYPE_POINTER_TO (ntype) = 0;
- TYPE_REFERENCE_TO (ntype) = 0;
- TYPE_ATTRIBUTES (ntype) = attribute;
+ ntype = build_distinct_type_copy (ttype);
- /* Create a new main variant of TYPE. */
- TYPE_MAIN_VARIANT (ntype) = ntype;
- TYPE_NEXT_VARIANT (ntype) = 0;
+ TYPE_ATTRIBUTES (ntype) = attribute;
set_type_quals (ntype, TYPE_UNQUALIFIED);
hashcode = iterative_hash_object (code, hashcode);
hashcode = type_hash_list (TYPE_ARG_TYPES (ntype), hashcode);
break;
case ARRAY_TYPE:
- hashcode = iterative_hash_object (TYPE_HASH (TYPE_DOMAIN (ntype)),
- hashcode);
+ if (TYPE_DOMAIN (ntype))
+ hashcode = iterative_hash_object (TYPE_HASH (TYPE_DOMAIN (ntype)),
+ hashcode);
break;
case INTEGER_TYPE:
hashcode = iterative_hash_object
(TREE_INT_CST_HIGH (TYPE_MAX_VALUE (ntype)), hashcode);
break;
case REAL_TYPE:
+ case FIXED_POINT_TYPE:
{
unsigned int precision = TYPE_PRECISION (ntype);
hashcode = iterative_hash_object (precision, hashcode);
}
ntype = type_hash_canon (hashcode, ntype);
- ttype = build_qualified_type (ntype, TYPE_QUALS (ttype));
+
+ /* If the target-dependent attributes make NTYPE different from
+ its canonical type, we will need to use structural equality
+ checks for this qualified type. */
+ ttype = build_qualified_type (ttype, TYPE_UNQUALIFIED);
+ if (TYPE_STRUCTURAL_EQUALITY_P (ttype)
+ || !targetm.comp_type_attributes (ntype, ttype))
+ SET_TYPE_STRUCTURAL_EQUALITY (ntype);
+ else
+ 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;
}
+/* 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));
+}
+
/* Return nonzero if IDENT is a valid name for attribute ATTR,
or zero if not.
their canonicalized form. */
static int
-is_attribute_with_length_p (const char *attr, int attr_len, tree ident)
+is_attribute_with_length_p (const char *attr, int attr_len, const_tree ident)
{
int ident_len;
const char *p;
gcc_assert (attr[1] == '_');
gcc_assert (attr[attr_len - 2] == '_');
gcc_assert (attr[attr_len - 1] == '_');
- gcc_assert (attr[1] == '_');
if (ident_len == attr_len - 4
&& strncmp (attr + 2, p, attr_len - 4) == 0)
return 1;
We try both `text' and `__text__', ATTR may be either one. */
int
-is_attribute_p (const char *attr, tree ident)
+is_attribute_p (const char *attr, const_tree ident)
{
return is_attribute_with_length_p (attr, strlen (attr), ident);
}
if (is_attribute_with_length_p (attr_name, attr_len, TREE_PURPOSE (l)))
return l;
}
-
return NULL_TREE;
}
+/* 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);
+
+ for (p = &list; *p; )
+ {
+ tree l = *p;
+ gcc_assert (TREE_CODE (TREE_PURPOSE (l)) == IDENTIFIER_NODE);
+ if (is_attribute_with_length_p (attr_name, attr_len, TREE_PURPOSE (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
a = lookup_attribute (IDENTIFIER_POINTER (TREE_PURPOSE (a2)),
TREE_CHAIN (a)))
{
- if (simple_cst_equal (TREE_VALUE (a), TREE_VALUE (a2)) == 1)
+ if (TREE_VALUE (a) != NULL
+ && TREE_CODE (TREE_VALUE (a)) == TREE_LIST
+ && TREE_VALUE (a2) != NULL
+ && TREE_CODE (TREE_VALUE (a2)) == TREE_LIST)
+ {
+ if (simple_cst_list_equal (TREE_VALUE (a),
+ TREE_VALUE (a2)) == 1)
+ break;
+ }
+ else if (simple_cst_equal (TREE_VALUE (a),
+ TREE_VALUE (a2)) == 1)
break;
}
if (a == NULL_TREE)
merge_dllimport_decl_attributes (tree old, tree new)
{
tree a;
- int delete_dllimport_p;
-
- old = DECL_ATTRIBUTES (old);
- new = DECL_ATTRIBUTES (new);
+ 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. */
- if (lookup_attribute ("dllimport", old) != NULL_TREE
- && lookup_attribute ("dllimport", new) == NULL_TREE)
- delete_dllimport_p = 1;
+ 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))
+ delete_dllimport_p = 0;
+ else if (DECL_DLLIMPORT_P (new)
+ && lookup_attribute ("dllexport", DECL_ATTRIBUTES (old)))
+ {
+ DECL_DLLIMPORT_P (new) = 0;
+ warning (OPT_Wattributes, "%q+D already declared with dllexport attribute: "
+ "dllimport ignored", new);
+ }
+ else if (DECL_DLLIMPORT_P (old) && !DECL_DLLIMPORT_P (new))
+ {
+ /* Warn about overriding a symbol that has already been used. eg:
+ 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);
+ /* 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_INVARIANT and TREE_CONSTANT
+ computed.
+ We still remove the attribute so that assembler code refers
+ to '&foo rather than '_imp__foo'. */
+ if (TREE_CODE (old) == VAR_DECL && TREE_ADDRESSABLE (old))
+ DECL_DLLIMPORT_P (new) = 1;
+ }
+
+ /* Let an inline definition silently override the external reference,
+ but otherwise warn about attribute inconsistency. */
+ else if (TREE_CODE (new) == VAR_DECL
+ || !DECL_DECLARED_INLINE_P (new))
+ warning (OPT_Wattributes, "%q+D redeclared without dllimport attribute: "
+ "previous dllimport ignored", new);
+ }
else
delete_dllimport_p = 0;
- a = merge_attributes (old, new);
+ a = merge_attributes (DECL_ATTRIBUTES (old), DECL_ATTRIBUTES (new));
- if (delete_dllimport_p)
+ if (delete_dllimport_p)
{
tree prev, t;
-
+ const size_t attr_len = strlen ("dllimport");
+
/* Scan the list for dllimport and delete it. */
for (prev = NULL_TREE, t = a; t; prev = t, t = TREE_CHAIN (t))
{
- if (is_attribute_p ("dllimport", TREE_PURPOSE (t)))
+ if (is_attribute_with_length_p ("dllimport", attr_len,
+ TREE_PURPOSE (t)))
{
if (prev == NULL_TREE)
a = TREE_CHAIN (a);
*no_add_attrs = true;
return tree_cons (name, args, NULL_TREE);
}
- if (TREE_CODE (node) != RECORD_TYPE && TREE_CODE (node) != UNION_TYPE)
+ if (TREE_CODE (node) == RECORD_TYPE
+ || TREE_CODE (node) == UNION_TYPE)
+ {
+ node = TYPE_NAME (node);
+ if (!node)
+ return NULL_TREE;
+ }
+ else
{
warning (OPT_Wattributes, "%qs attribute ignored",
IDENTIFIER_POINTER (name));
*no_add_attrs = true;
+ return NULL_TREE;
}
+ }
+ if (TREE_CODE (node) != FUNCTION_DECL
+ && TREE_CODE (node) != VAR_DECL
+ && TREE_CODE (node) != TYPE_DECL)
+ {
+ *no_add_attrs = true;
+ warning (OPT_Wattributes, "%qs attribute ignored",
+ IDENTIFIER_POINTER (name));
return NULL_TREE;
}
/* Report error on dllimport ambiguities seen now before they cause
any damage. */
- if (is_attribute_p ("dllimport", name))
+ else if (is_attribute_p ("dllimport", name))
{
+ /* 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. We
- allow the attribute for function definitions if declared
- inline. */
- if (TREE_CODE (node) == FUNCTION_DECL && DECL_INITIAL (node)
- && !DECL_DECLARED_INLINE_P (node))
+ 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;
}
- else if (TREE_CODE (node) == VAR_DECL)
+ else if (TREE_CODE (node) == VAR_DECL)
{
if (DECL_INITIAL (node))
{
if (current_function_decl != NULL_TREE && !TREE_STATIC (node))
TREE_PUBLIC (node) = 1;
}
+
+ if (*no_add_attrs == false)
+ DECL_DLLIMPORT_P (node) = 1;
}
/* Report error if symbol is not accessible at global scope. */
*no_add_attrs = true;
}
+ /* 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 ("%qs implies default visibility, but %qD has already "
+ "been declared with a different visibility",
+ IDENTIFIER_POINTER (name), node);
+ DECL_VISIBILITY (node) = VISIBILITY_DEFAULT;
+ DECL_VISIBILITY_SPECIFIED (node) = 1;
+ }
+
return NULL_TREE;
}
TYPE_RESTRICT (type) = (type_quals & TYPE_QUAL_RESTRICT) != 0;
}
-/* Returns true iff cand is equivalent to base with type_quals. */
+/* Returns true iff CAND is equivalent to BASE with TYPE_QUALS. */
bool
-check_qualified_type (tree cand, tree base, int type_quals)
+check_qualified_type (const_tree cand, const_tree base, int type_quals)
{
return (TYPE_QUALS (cand) == type_quals
&& TYPE_NAME (cand) == TYPE_NAME (base)
{
t = build_variant_type_copy (type);
set_type_quals (t, type_quals);
+
+ if (TYPE_STRUCTURAL_EQUALITY_P (type))
+ /* Propagate structural equality. */
+ SET_TYPE_STRUCTURAL_EQUALITY (t);
+ else if (TYPE_CANONICAL (type) != type)
+ /* Build the underlying canonical type, since it is different
+ from TYPE. */
+ TYPE_CANONICAL (t) = build_qualified_type (TYPE_CANONICAL (type),
+ type_quals);
+ else
+ /* T is its own canonical type. */
+ TYPE_CANONICAL (t) = t;
+
}
return t;
}
/* Create a new distinct copy of TYPE. The new type is made its own
- MAIN_VARIANT. */
+ MAIN_VARIANT. If TYPE requires structural equality checks, the
+ resulting type requires structural equality checks; otherwise, its
+ TYPE_CANONICAL points to itself. */
tree
build_distinct_type_copy (tree type)
TYPE_POINTER_TO (t) = 0;
TYPE_REFERENCE_TO (t) = 0;
+ /* Set the canonical type either to a new equivalence class, or
+ propagate the need for structural equality checks. */
+ if (TYPE_STRUCTURAL_EQUALITY_P (type))
+ SET_TYPE_STRUCTURAL_EQUALITY (t);
+ else
+ TYPE_CANONICAL (t) = t;
+
/* Make it its own variant. */
TYPE_MAIN_VARIANT (t) = t;
TYPE_NEXT_VARIANT (t) = 0;
-
+
+ /* 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. */
+
return t;
}
-/* Create a new variant of TYPE, equivalent but distinct.
- This is so the caller can modify it. */
+/* Create a new variant of TYPE, equivalent but distinct. This is so
+ the caller can modify it. TYPE_CANONICAL for the return type will
+ be equivalent to TYPE_CANONICAL of TYPE, indicating that the types
+ are considered equal by the language itself (or that both types
+ require structural equality checks). */
tree
build_variant_type_copy (tree type)
tree t, m = TYPE_MAIN_VARIANT (type);
t = build_distinct_type_copy (type);
+
+ /* Since we're building a variant, assume that it is a non-semantic
+ variant. This also propagates TYPE_STRUCTURAL_EQUALITY_P. */
+ TYPE_CANONICAL (t) = TYPE_CANONICAL (type);
/* Add the new type to the chain of variants of TYPE. */
TYPE_NEXT_VARIANT (t) = TYPE_NEXT_VARIANT (m);
/* Return true if the from tree in both tree maps are equal. */
int
-tree_map_eq (const void *va, const void *vb)
+tree_map_base_eq (const void *va, const void *vb)
{
- const struct tree_map *a = va, *b = vb;
+ const struct tree_map_base *const a = va, *const b = vb;
return (a->from == b->from);
}
/* Hash a from tree in a tree_map. */
unsigned int
-tree_map_hash (const void *item)
+tree_map_base_hash (const void *item)
{
- return (((const struct tree_map *) item)->hash);
+ return htab_hash_pointer (((const struct tree_map_base *)item)->from);
}
/* Return true if this tree map structure is marked for garbage collection
structure goes away when the from tree goes away. */
int
-tree_map_marked_p (const void *p)
+tree_map_base_marked_p (const void *p)
{
- tree from = ((struct tree_map *) p)->from;
+ return ggc_marked_p (((const struct tree_map_base *) p)->from);
+}
- return ggc_marked_p (from);
+unsigned int
+tree_map_hash (const void *item)
+{
+ return (((const struct tree_map *) item)->hash);
}
-/* Return true if the trees in the tree_int_map *'s VA and VB are equal. */
+/* Return the initialization priority for DECL. */
-static int
-tree_int_map_eq (const void *va, const void *vb)
+priority_type
+decl_init_priority_lookup (tree decl)
{
- const struct tree_int_map *a = va, *b = vb;
- return (a->from == b->from);
+ struct tree_priority_map *h;
+ struct tree_map_base in;
+
+ gcc_assert (VAR_OR_FUNCTION_DECL_P (decl));
+ in.from = decl;
+ h = htab_find (init_priority_for_decl, &in);
+ return h ? h->init : DEFAULT_INIT_PRIORITY;
}
-/* Hash a from tree in the tree_int_map * ITEM. */
+/* Return the finalization priority for DECL. */
-static unsigned int
-tree_int_map_hash (const void *item)
+priority_type
+decl_fini_priority_lookup (tree decl)
{
- return htab_hash_pointer (((const struct tree_int_map *)item)->from);
+ struct tree_priority_map *h;
+ struct tree_map_base in;
+
+ gcc_assert (TREE_CODE (decl) == FUNCTION_DECL);
+ in.from = decl;
+ h = htab_find (init_priority_for_decl, &in);
+ return h ? h->fini : DEFAULT_INIT_PRIORITY;
}
-/* Return true if this tree int map structure is marked for garbage collection
- purposes. We simply return true if the from tree_int_map *P's from tree is marked, so that this
- structure goes away when the from tree goes away. */
+/* Return the initialization and finalization priority information for
+ DECL. If there is no previous priority information, a freshly
+ allocated structure is returned. */
-static int
-tree_int_map_marked_p (const void *p)
+static struct tree_priority_map *
+decl_priority_info (tree decl)
{
- tree from = ((struct tree_int_map *) p)->from;
+ struct tree_priority_map in;
+ struct tree_priority_map *h;
+ void **loc;
+
+ in.base.from = decl;
+ loc = htab_find_slot (init_priority_for_decl, &in, INSERT);
+ h = *loc;
+ if (!h)
+ {
+ h = GGC_CNEW (struct tree_priority_map);
+ *loc = h;
+ h->base.from = decl;
+ h->init = DEFAULT_INIT_PRIORITY;
+ h->fini = DEFAULT_INIT_PRIORITY;
+ }
- return ggc_marked_p (from);
+ return h;
}
-/* Lookup an init priority for FROM, and return it if we find one. */
-unsigned short
-decl_init_priority_lookup (tree from)
+/* Set the initialization priority for DECL to PRIORITY. */
+
+void
+decl_init_priority_insert (tree decl, priority_type priority)
{
- struct tree_int_map *h, in;
- in.from = from;
+ struct tree_priority_map *h;
- h = htab_find_with_hash (init_priority_for_decl,
- &in, htab_hash_pointer (from));
- if (h)
- return h->to;
- return 0;
+ gcc_assert (VAR_OR_FUNCTION_DECL_P (decl));
+ h = decl_priority_info (decl);
+ h->init = priority;
+}
+
+/* Set the finalization priority for DECL to PRIORITY. */
+
+void
+decl_fini_priority_insert (tree decl, priority_type priority)
+{
+ struct tree_priority_map *h;
+
+ gcc_assert (TREE_CODE (decl) == FUNCTION_DECL);
+ h = decl_priority_info (decl);
+ h->fini = priority;
+}
+
+/* Look up a restrict qualified base decl for FROM. */
+
+tree
+decl_restrict_base_lookup (tree from)
+{
+ struct tree_map *h;
+ struct tree_map in;
+
+ in.base.from = from;
+ h = htab_find_with_hash (restrict_base_for_decl, &in,
+ htab_hash_pointer (from));
+ return h ? h->to : NULL_TREE;
}
-/* Insert a mapping FROM->TO in the init priority hashtable. */
+/* Record the restrict qualified base TO for FROM. */
void
-decl_init_priority_insert (tree from, unsigned short to)
+decl_restrict_base_insert (tree from, tree to)
{
- struct tree_int_map *h;
+ struct tree_map *h;
void **loc;
- h = ggc_alloc (sizeof (struct tree_int_map));
- h->from = from;
+ h = ggc_alloc (sizeof (struct tree_map));
+ h->hash = htab_hash_pointer (from);
+ h->base.from = from;
h->to = to;
- loc = htab_find_slot_with_hash (init_priority_for_decl, h,
- htab_hash_pointer (from), INSERT);
- *(struct tree_int_map **) loc = h;
-}
+ loc = htab_find_slot_with_hash (restrict_base_for_decl, h, h->hash, INSERT);
+ *(struct tree_map **) loc = h;
+}
/* Print out the statistics for the DECL_DEBUG_EXPR hash table. */
(long) htab_elements (value_expr_for_decl),
htab_collisions (value_expr_for_decl));
}
+
+/* Print out statistics for the RESTRICT_BASE_FOR_DECL hash table, but
+ don't print anything if the table is empty. */
+
+static void
+print_restrict_base_statistics (void)
+{
+ if (htab_elements (restrict_base_for_decl) != 0)
+ fprintf (stderr,
+ "RESTRICT_BASE hash: size %ld, %ld elements, %f collisions\n",
+ (long) htab_size (restrict_base_for_decl),
+ (long) htab_elements (restrict_base_for_decl),
+ htab_collisions (restrict_base_for_decl));
+}
+
/* Lookup a debug expression for FROM, and return it if we find one. */
tree
decl_debug_expr_lookup (tree from)
{
struct tree_map *h, in;
- in.from = from;
+ in.base.from = from;
h = htab_find_with_hash (debug_expr_for_decl, &in, htab_hash_pointer (from));
if (h)
h = ggc_alloc (sizeof (struct tree_map));
h->hash = htab_hash_pointer (from);
- h->from = from;
+ h->base.from = from;
h->to = to;
loc = htab_find_slot_with_hash (debug_expr_for_decl, h, h->hash, INSERT);
*(struct tree_map **) loc = h;
decl_value_expr_lookup (tree from)
{
struct tree_map *h, in;
- in.from = from;
+ in.base.from = from;
h = htab_find_with_hash (value_expr_for_decl, &in, htab_hash_pointer (from));
if (h)
h = ggc_alloc (sizeof (struct tree_map));
h->hash = htab_hash_pointer (from);
- h->from = from;
+ h->base.from = from;
h->to = to;
loc = htab_find_slot_with_hash (value_expr_for_decl, h, h->hash, INSERT);
*(struct tree_map **) loc = h;
with types in the TREE_VALUE slots), by adding the hash codes
of the individual types. */
-unsigned int
-type_hash_list (tree list, hashval_t hashcode)
+static unsigned int
+type_hash_list (const_tree list, hashval_t hashcode)
{
- tree tail;
+ const_tree tail;
for (tail = list; tail; tail = TREE_CHAIN (tail))
if (TREE_VALUE (tail) != error_mark_node)
static int
type_hash_eq (const void *va, const void *vb)
{
- const struct type_hash *a = va, *b = vb;
+ const struct type_hash *const a = va, *const b = vb;
/* First test the things that are the same for all types. */
if (a->hash != b->hash
case INTEGER_TYPE:
case REAL_TYPE:
case BOOLEAN_TYPE:
- case CHAR_TYPE:
return ((TYPE_MAX_VALUE (a->type) == TYPE_MAX_VALUE (b->type)
|| tree_int_cst_equal (TYPE_MAX_VALUE (a->type),
TYPE_MAX_VALUE (b->type)))
|| tree_int_cst_equal (TYPE_MIN_VALUE (a->type),
TYPE_MIN_VALUE (b->type))));
+ case FIXED_POINT_TYPE:
+ return TYPE_SATURATING (a->type) == TYPE_SATURATING (b->type);
+
case OFFSET_TYPE:
return TYPE_OFFSET_BASETYPE (a->type) == TYPE_OFFSET_BASETYPE (b->type);
TYPE_FIELDS (b->type))));
case FUNCTION_TYPE:
- return (TYPE_ARG_TYPES (a->type) == TYPE_ARG_TYPES (b->type)
- || (TYPE_ARG_TYPES (a->type)
- && TREE_CODE (TYPE_ARG_TYPES (a->type)) == TREE_LIST
- && TYPE_ARG_TYPES (b->type)
- && TREE_CODE (TYPE_ARG_TYPES (b->type)) == TREE_LIST
- && type_list_equal (TYPE_ARG_TYPES (a->type),
- TYPE_ARG_TYPES (b->type))));
+ if (TYPE_ARG_TYPES (a->type) == TYPE_ARG_TYPES (b->type)
+ || (TYPE_ARG_TYPES (a->type)
+ && TREE_CODE (TYPE_ARG_TYPES (a->type)) == TREE_LIST
+ && TYPE_ARG_TYPES (b->type)
+ && TREE_CODE (TYPE_ARG_TYPES (b->type)) == TREE_LIST
+ && type_list_equal (TYPE_ARG_TYPES (a->type),
+ TYPE_ARG_TYPES (b->type))))
+ break;
+ return 0;
default:
return 0;
}
+
+ if (lang_hooks.types.type_hash_eq != NULL)
+ return lang_hooks.types.type_hash_eq (a->type, b->type);
+
+ return 1;
}
/* Return the cached hash value. */
h->hash = hashcode;
h->type = type;
loc = htab_find_slot_with_hash (type_hash_table, h, hashcode, INSERT);
- *(struct type_hash **) loc = h;
+ *loc = (void *)h;
}
/* Given TYPE, and HASHCODE its hash code, return the canonical
static int
type_hash_marked_p (const void *p)
{
- tree type = ((struct type_hash *) p)->type;
+ const_tree const type = ((const struct type_hash *) p)->type;
return ggc_marked_p (type) || TYPE_SYMTAB_POINTER (type);
}
with names in the TREE_PURPOSE slots and args in the TREE_VALUE slots),
by adding the hash codes of the individual attributes. */
-unsigned int
-attribute_hash_list (tree list, hashval_t hashcode)
+static unsigned int
+attribute_hash_list (const_tree list, hashval_t hashcode)
{
- tree tail;
+ const_tree tail;
for (tail = list; tail; tail = TREE_CHAIN (tail))
/* ??? Do we want to add in TREE_VALUE too? */
equivalent to l1. */
int
-attribute_list_equal (tree l1, tree l2)
+attribute_list_equal (const_tree l1, const_tree l2)
{
return attribute_list_contained (l1, l2)
&& attribute_list_contained (l2, l1);
correctly. */
int
-attribute_list_contained (tree l1, tree l2)
+attribute_list_contained (const_tree l1, const_tree l2)
{
- tree t1, t2;
+ const_tree t1, t2;
/* First check the obvious, maybe the lists are identical. */
if (l1 == l2)
for (; t2 != 0; t2 = TREE_CHAIN (t2))
{
- tree attr;
- for (attr = lookup_attribute (IDENTIFIER_POINTER (TREE_PURPOSE (t2)), l1);
+ 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_attribute (IDENTIFIER_POINTER (TREE_PURPOSE (t2)),
+ CONST_CAST_TREE(l1));
attr != NULL_TREE;
attr = lookup_attribute (IDENTIFIER_POINTER (TREE_PURPOSE (t2)),
TREE_CHAIN (attr)))
{
- if (simple_cst_equal (TREE_VALUE (t2), TREE_VALUE (attr)) == 1)
+ if (TREE_VALUE (t2) != NULL
+ && TREE_CODE (TREE_VALUE (t2)) == TREE_LIST
+ && TREE_VALUE (attr) != NULL
+ && TREE_CODE (TREE_VALUE (attr)) == TREE_LIST)
+ {
+ if (simple_cst_list_equal (TREE_VALUE (t2),
+ TREE_VALUE (attr)) == 1)
+ break;
+ }
+ else if (simple_cst_equal (TREE_VALUE (t2), TREE_VALUE (attr)) == 1)
break;
}
if (attr == 0)
return 0;
-
- if (simple_cst_equal (TREE_VALUE (t2), TREE_VALUE (attr)) != 1)
- return 0;
}
return 1;
Also, the TREE_PURPOSEs must match. */
int
-type_list_equal (tree l1, tree l2)
+type_list_equal (const_tree l1, const_tree l2)
{
- tree t1, t2;
+ const_tree t1, t2;
for (t1 = l1, t2 = l2; t1 && t2; t1 = TREE_CHAIN (t1), t2 = TREE_CHAIN (t2))
if (TREE_VALUE (t1) != TREE_VALUE (t2)
then this function counts only the ordinary arguments. */
int
-type_num_arguments (tree type)
+type_num_arguments (const_tree type)
{
int i = 0;
tree t;
represent the same constant value. */
int
-tree_int_cst_equal (tree t1, tree t2)
+tree_int_cst_equal (const_tree t1, const_tree t2)
{
if (t1 == t2)
return 1;
The precise way of comparison depends on their data type. */
int
-tree_int_cst_lt (tree t1, tree t2)
+tree_int_cst_lt (const_tree t1, const_tree t2)
{
if (t1 == t2)
return 0;
/* Returns -1 if T1 < T2, 0 if T1 == T2, and 1 if T1 > T2. */
int
-tree_int_cst_compare (tree t1, tree t2)
+tree_int_cst_compare (const_tree t1, const_tree t2)
{
if (tree_int_cst_lt (t1, t2))
return -1;
/* Return 1 if T is an INTEGER_CST that can be manipulated efficiently on
the host. If POS is zero, the value can be represented in a single
- HOST_WIDE_INT. If POS is nonzero, the value must be positive and can
+ HOST_WIDE_INT. If POS is nonzero, the value must be non-negative and can
be represented in a single unsigned HOST_WIDE_INT. */
int
-host_integerp (tree t, int pos)
+host_integerp (const_tree t, int pos)
{
return (TREE_CODE (t) == INTEGER_CST
- && ! TREE_OVERFLOW (t)
&& ((TREE_INT_CST_HIGH (t) == 0
&& (HOST_WIDE_INT) TREE_INT_CST_LOW (t) >= 0)
|| (! pos && TREE_INT_CST_HIGH (t) == -1
&& (HOST_WIDE_INT) TREE_INT_CST_LOW (t) < 0
- && !TYPE_UNSIGNED (TREE_TYPE (t)))
+ && (!TYPE_UNSIGNED (TREE_TYPE (t))
+ || (TREE_CODE (TREE_TYPE (t)) == INTEGER_TYPE
+ && TYPE_IS_SIZETYPE (TREE_TYPE (t)))))
|| (pos && TREE_INT_CST_HIGH (t) == 0)));
}
/* Return the HOST_WIDE_INT least significant bits of T if it is an
INTEGER_CST and there is no overflow. POS is nonzero if the result must
- be positive. We must be able to satisfy the above conditions. */
+ be non-negative. We must be able to satisfy the above conditions. */
HOST_WIDE_INT
-tree_low_cst (tree t, int pos)
+tree_low_cst (const_tree t, int pos)
{
gcc_assert (host_integerp (t, pos));
return TREE_INT_CST_LOW (t);
/* Return the most significant bit of the integer constant T. */
int
-tree_int_cst_msb (tree t)
+tree_int_cst_msb (const_tree t)
{
int prec;
HOST_WIDE_INT h;
/* Return an indication of the sign of the integer constant T.
The return value is -1 if T < 0, 0 if T == 0, and 1 if T > 0.
- Note that -1 will never be returned it T's type is unsigned. */
+ Note that -1 will never be returned if T's type is unsigned. */
int
-tree_int_cst_sgn (tree t)
+tree_int_cst_sgn (const_tree t)
{
if (TREE_INT_CST_LOW (t) == 0 && TREE_INT_CST_HIGH (t) == 0)
return 0;
are known to be equal; otherwise return 0. */
int
-simple_cst_list_equal (tree l1, tree l2)
+simple_cst_list_equal (const_tree l1, const_tree l2)
{
while (l1 != NULL_TREE && l2 != NULL_TREE)
{
this function. */
int
-simple_cst_equal (tree t1, tree t2)
+simple_cst_equal (const_tree t1, const_tree t2)
{
enum tree_code code1, code2;
int cmp;
case REAL_CST:
return REAL_VALUES_IDENTICAL (TREE_REAL_CST (t1), TREE_REAL_CST (t2));
+ case FIXED_CST:
+ return FIXED_VALUES_IDENTICAL (TREE_FIXED_CST (t1), TREE_FIXED_CST (t2));
+
case STRING_CST:
return (TREE_STRING_LENGTH (t1) == TREE_STRING_LENGTH (t2)
&& ! memcmp (TREE_STRING_POINTER (t1), TREE_STRING_POINTER (t2),
return simple_cst_equal (TREE_OPERAND (t1, 0), TREE_OPERAND (t2, 0));
case CALL_EXPR:
- cmp = simple_cst_equal (TREE_OPERAND (t1, 0), TREE_OPERAND (t2, 0));
+ cmp = simple_cst_equal (CALL_EXPR_FN (t1), CALL_EXPR_FN (t2));
if (cmp <= 0)
return cmp;
- return
- simple_cst_list_equal (TREE_OPERAND (t1, 1), TREE_OPERAND (t2, 1));
+ if (call_expr_nargs (t1) != call_expr_nargs (t2))
+ return 0;
+ {
+ const_tree arg1, arg2;
+ const_call_expr_arg_iterator iter1, iter2;
+ for (arg1 = first_const_call_expr_arg (t1, &iter1),
+ arg2 = first_const_call_expr_arg (t2, &iter2);
+ arg1 && arg2;
+ arg1 = next_const_call_expr_arg (&iter1),
+ arg2 = next_const_call_expr_arg (&iter2))
+ {
+ cmp = simple_cst_equal (arg1, arg2);
+ if (cmp <= 0)
+ return cmp;
+ }
+ return arg1 == arg2;
+ }
case TARGET_EXPR:
/* Special case: if either target is an unallocated VAR_DECL,
than U, respectively. */
int
-compare_tree_int (tree t, unsigned HOST_WIDE_INT u)
+compare_tree_int (const_tree t, unsigned HOST_WIDE_INT u)
{
if (tree_int_cst_sgn (t) < 0)
return -1;
would compare equal using operand_equal_p. */
hashval_t
-iterative_hash_expr (tree t, hashval_t val)
+iterative_hash_expr (const_tree t, hashval_t val)
{
int i;
enum tree_code code;
return iterative_hash_hashval_t (val2, val);
}
+ case FIXED_CST:
+ {
+ unsigned int val2 = fixed_hash (TREE_FIXED_CST_PTR (t));
+
+ return iterative_hash_hashval_t (val2, val);
+ }
case STRING_CST:
return iterative_hash (TREE_STRING_POINTER (t),
TREE_STRING_LENGTH (t), val);
if (class == tcc_declaration)
{
- /* Otherwise, we can just compare decls by pointer. */
- val = iterative_hash_pointer (t, val);
+ /* DECL's have a unique ID */
+ val = iterative_hash_host_wide_int (DECL_UID (t), val);
}
else
{
val = iterative_hash_hashval_t (two, val);
}
else
- for (i = TREE_CODE_LENGTH (code) - 1; i >= 0; --i)
+ for (i = TREE_OPERAND_LENGTH (t) - 1; i >= 0; --i)
val = iterative_hash_expr (TREE_OPERAND (t, i), val);
}
return val;
TYPE_NEXT_PTR_TO (t) = TYPE_POINTER_TO (to_type);
TYPE_POINTER_TO (to_type) = t;
+ if (TYPE_STRUCTURAL_EQUALITY_P (to_type))
+ SET_TYPE_STRUCTURAL_EQUALITY (t);
+ else if (TYPE_CANONICAL (to_type) != to_type)
+ TYPE_CANONICAL (t)
+ = build_pointer_type_for_mode (TYPE_CANONICAL (to_type),
+ mode, can_alias_all);
+
/* Lay out the type. This function has many callers that are concerned
with expression-construction, and this simplifies them all. */
layout_type (t);
TYPE_NEXT_REF_TO (t) = TYPE_REFERENCE_TO (to_type);
TYPE_REFERENCE_TO (to_type) = t;
+ if (TYPE_STRUCTURAL_EQUALITY_P (to_type))
+ SET_TYPE_STRUCTURAL_EQUALITY (t);
+ else if (TYPE_CANONICAL (to_type) != to_type)
+ TYPE_CANONICAL (t)
+ = build_reference_type_for_mode (TYPE_CANONICAL (to_type),
+ mode, can_alias_all);
+
layout_type (t);
return t;
if (host_integerp (maxval, 1))
return type_hash_canon (tree_low_cst (maxval, 1), itype);
else
- return itype;
+ {
+ /* Since we cannot hash this type, we need to compare it using
+ structural equality checks. */
+ SET_TYPE_STRUCTURAL_EQUALITY (itype);
+ return itype;
+ }
}
/* Builds a signed or unsigned integer type of precision PRECISION.
}
/* 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.
- if TYPE==NULL_TREE, sizetype is used. */
+ ENUMERAL_TYPE or BOOLEAN_TYPE), with low bound LOWVAL and
+ high bound HIGHVAL. If TYPE is NULL, sizetype is used. */
tree
build_range_type (tree type, tree lowval, tree highval)
if (type == NULL_TREE)
type = sizetype;
- TYPE_MIN_VALUE (itype) = convert (type, lowval);
- TYPE_MAX_VALUE (itype) = highval ? convert (type, highval) : NULL;
+ TYPE_MIN_VALUE (itype) = fold_convert (type, lowval);
+ TYPE_MAX_VALUE (itype) = highval ? fold_convert (type, highval) : NULL;
TYPE_PRECISION (itype) = TYPE_PRECISION (type);
TYPE_MODE (itype) = TYPE_MODE (type);
if (index_type == 0)
{
- layout_type (t);
+ tree save = t;
+ hashcode = iterative_hash_object (TYPE_HASH (elt_type), hashcode);
+ t = type_hash_canon (hashcode, t);
+ if (save == t)
+ layout_type (t);
+
+ if (TYPE_CANONICAL (t) == t)
+ {
+ if (TYPE_STRUCTURAL_EQUALITY_P (elt_type))
+ SET_TYPE_STRUCTURAL_EQUALITY (t);
+ else if (TYPE_CANONICAL (elt_type) != elt_type)
+ TYPE_CANONICAL (t)
+ = build_array_type (TYPE_CANONICAL (elt_type), index_type);
+ }
+
return t;
}
if (!COMPLETE_TYPE_P (t))
layout_type (t);
+
+ if (TYPE_CANONICAL (t) == t)
+ {
+ if (TYPE_STRUCTURAL_EQUALITY_P (elt_type)
+ || TYPE_STRUCTURAL_EQUALITY_P (index_type))
+ SET_TYPE_STRUCTURAL_EQUALITY (t);
+ else if (TYPE_CANONICAL (elt_type) != elt_type
+ || TYPE_CANONICAL (index_type) != index_type)
+ TYPE_CANONICAL (t)
+ = build_array_type (TYPE_CANONICAL (elt_type),
+ TYPE_CANONICAL (index_type));
+ }
+
return t;
}
the innermost dimension of ARRAY. */
tree
-get_inner_array_type (tree array)
+get_inner_array_type (const_tree array)
{
tree type = TREE_TYPE (array);
return type;
}
+/* Computes the canonical argument types from the argument type list
+ ARGTYPES.
+
+ Upon return, *ANY_STRUCTURAL_P will be true iff either it was true
+ on entry to this function, or if any of the ARGTYPES are
+ structural.
+
+ Upon return, *ANY_NONCANONICAL_P will be true iff either it was
+ true on entry to this function, or if any of the ARGTYPES are
+ non-canonical.
+
+ Returns a canonical argument list, which may be ARGTYPES when the
+ canonical argument list is unneeded (i.e., *ANY_STRUCTURAL_P is
+ true) or would not differ from ARGTYPES. */
+
+static tree
+maybe_canonicalize_argtypes(tree argtypes,
+ bool *any_structural_p,
+ bool *any_noncanonical_p)
+{
+ tree arg;
+ bool any_noncanonical_argtypes_p = false;
+
+ for (arg = argtypes; arg && !(*any_structural_p); arg = TREE_CHAIN (arg))
+ {
+ if (!TREE_VALUE (arg) || TREE_VALUE (arg) == error_mark_node)
+ /* Fail gracefully by stating that the type is structural. */
+ *any_structural_p = true;
+ else if (TYPE_STRUCTURAL_EQUALITY_P (TREE_VALUE (arg)))
+ *any_structural_p = true;
+ else if (TYPE_CANONICAL (TREE_VALUE (arg)) != TREE_VALUE (arg)
+ || TREE_PURPOSE (arg))
+ /* If the argument has a default argument, we consider it
+ non-canonical even though the type itself is canonical.
+ That way, different variants of function and method types
+ with default arguments will all point to the variant with
+ no defaults as their canonical type. */
+ any_noncanonical_argtypes_p = true;
+ }
+
+ if (*any_structural_p)
+ return argtypes;
+
+ if (any_noncanonical_argtypes_p)
+ {
+ /* Build the canonical list of argument types. */
+ tree canon_argtypes = NULL_TREE;
+ bool is_void = false;
+
+ for (arg = argtypes; arg; arg = TREE_CHAIN (arg))
+ {
+ if (arg == void_list_node)
+ is_void = true;
+ else
+ canon_argtypes = tree_cons (NULL_TREE,
+ TYPE_CANONICAL (TREE_VALUE (arg)),
+ canon_argtypes);
+ }
+
+ canon_argtypes = nreverse (canon_argtypes);
+ if (is_void)
+ canon_argtypes = chainon (canon_argtypes, void_list_node);
+
+ /* There is a non-canonical type. */
+ *any_noncanonical_p = true;
+ return canon_argtypes;
+ }
+
+ /* The canonical argument types are the same as ARGTYPES. */
+ return argtypes;
+}
+
/* Construct, lay out and return
the type of functions returning type VALUE_TYPE
given arguments of types ARG_TYPES.
{
tree t;
hashval_t hashcode = 0;
+ bool any_structural_p, any_noncanonical_p;
+ tree canon_argtypes;
if (TREE_CODE (value_type) == FUNCTION_TYPE)
{
hashcode = type_hash_list (arg_types, hashcode);
t = type_hash_canon (hashcode, t);
+ /* Set up the canonical type. */
+ any_structural_p = TYPE_STRUCTURAL_EQUALITY_P (value_type);
+ any_noncanonical_p = TYPE_CANONICAL (value_type) != value_type;
+ canon_argtypes = maybe_canonicalize_argtypes (arg_types,
+ &any_structural_p,
+ &any_noncanonical_p);
+ if (any_structural_p)
+ SET_TYPE_STRUCTURAL_EQUALITY (t);
+ else if (any_noncanonical_p)
+ TYPE_CANONICAL (t) = build_function_type (TYPE_CANONICAL (value_type),
+ canon_argtypes);
+
if (!COMPLETE_TYPE_P (t))
layout_type (t);
return t;
tree t;
tree ptype;
int hashcode = 0;
+ bool any_structural_p, any_noncanonical_p;
+ tree canon_argtypes;
/* Make a node of the sort we want. */
t = make_node (METHOD_TYPE);
hashcode = type_hash_list (argtypes, hashcode);
t = type_hash_canon (hashcode, t);
+ /* Set up the canonical type. */
+ any_structural_p
+ = (TYPE_STRUCTURAL_EQUALITY_P (basetype)
+ || TYPE_STRUCTURAL_EQUALITY_P (rettype));
+ any_noncanonical_p
+ = (TYPE_CANONICAL (basetype) != basetype
+ || TYPE_CANONICAL (rettype) != rettype);
+ canon_argtypes = maybe_canonicalize_argtypes (TREE_CHAIN (argtypes),
+ &any_structural_p,
+ &any_noncanonical_p);
+ if (any_structural_p)
+ SET_TYPE_STRUCTURAL_EQUALITY (t);
+ else if (any_noncanonical_p)
+ TYPE_CANONICAL (t)
+ = build_method_type_directly (TYPE_CANONICAL (basetype),
+ TYPE_CANONICAL (rettype),
+ canon_argtypes);
if (!COMPLETE_TYPE_P (t))
layout_type (t);
if (!COMPLETE_TYPE_P (t))
layout_type (t);
+ if (TYPE_CANONICAL (t) == t)
+ {
+ if (TYPE_STRUCTURAL_EQUALITY_P (basetype)
+ || TYPE_STRUCTURAL_EQUALITY_P (type))
+ SET_TYPE_STRUCTURAL_EQUALITY (t);
+ else if (TYPE_CANONICAL (TYPE_MAIN_VARIANT (basetype)) != basetype
+ || TYPE_CANONICAL (type) != type)
+ TYPE_CANONICAL (t)
+ = build_offset_type (TYPE_CANONICAL (TYPE_MAIN_VARIANT (basetype)),
+ TYPE_CANONICAL (type));
+ }
+
return t;
}
if (!COMPLETE_TYPE_P (t))
layout_type (t);
- /* If we are writing Dwarf2 output we need to create a name,
- since complex is a fundamental type. */
- if ((write_symbols == DWARF2_DEBUG || write_symbols == VMS_AND_DWARF2_DEBUG)
- && ! TYPE_NAME (t))
+ if (TYPE_CANONICAL (t) == t)
+ {
+ if (TYPE_STRUCTURAL_EQUALITY_P (component_type))
+ SET_TYPE_STRUCTURAL_EQUALITY (t);
+ else if (TYPE_CANONICAL (component_type) != component_type)
+ TYPE_CANONICAL (t)
+ = build_complex_type (TYPE_CANONICAL (component_type));
+ }
+
+ /* We need to create a name, since complex is a fundamental type. */
+ if (! TYPE_NAME (t))
{
const char *name;
if (component_type == char_type_node)
name = 0;
if (name != 0)
- TYPE_NAME (t) = get_identifier (name);
+ TYPE_NAME (t) = build_decl (TYPE_DECL, get_identifier (name), t);
}
return build_qualified_type (t, TYPE_QUALS (component_type));
if (TREE_CODE (op) == COMPONENT_REF
/* Since type_for_size always gives an integer type. */
&& TREE_CODE (type) != REAL_TYPE
+ && TREE_CODE (type) != FIXED_POINT_TYPE
/* Don't crash if field not laid out yet. */
&& DECL_SIZE (TREE_OPERAND (op, 1)) != 0
&& host_integerp (DECL_SIZE (TREE_OPERAND (op, 1)), 1))
if (TREE_CODE (op) == COMPONENT_REF
/* Since type_for_size always gives an integer type. */
&& TREE_CODE (TREE_TYPE (op)) != REAL_TYPE
+ && TREE_CODE (TREE_TYPE (op)) != FIXED_POINT_TYPE
/* Ensure field is laid out already. */
&& DECL_SIZE (TREE_OPERAND (op, 1)) != 0
&& host_integerp (DECL_SIZE (TREE_OPERAND (op, 1)), 1))
{
if (first)
uns = DECL_UNSIGNED (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);
+ win = fold_convert (type, op);
}
}
+
*unsignedp_ptr = uns;
return win;
}
for type TYPE (an INTEGER_TYPE). */
int
-int_fits_type_p (tree c, tree type)
+int_fits_type_p (const_tree c, const_tree type)
{
tree type_low_bound = TYPE_MIN_VALUE (type);
tree type_high_bound = TYPE_MAX_VALUE (type);
bool ok_for_low_bound, ok_for_high_bound;
- tree tmp;
+ unsigned HOST_WIDE_INT low;
+ HOST_WIDE_INT high;
/* If at least one bound of the type is a constant integer, we can check
ourselves and maybe make a decision. If no such decision is possible, but
this type is a subtype, try checking against that. Otherwise, use
- force_fit_type, which checks against the precision.
+ fit_double_type, which checks against the precision.
Compute the status for each possibly constant bound, and return if we see
one does not match. Use ok_for_xxx_bound for this purpose, assigning -1
return 0;
/* If we haven't been able to decide at this point, there nothing more we
- can check ourselves here. Look at the base type if we have one. */
- if (TREE_CODE (type) == INTEGER_TYPE && TREE_TYPE (type) != 0)
+ can check ourselves here. Look at the base type if we have one and it
+ has the same precision. */
+ if (TREE_CODE (type) == INTEGER_TYPE
+ && TREE_TYPE (type) != 0
+ && TYPE_PRECISION (type) == TYPE_PRECISION (TREE_TYPE (type)))
return int_fits_type_p (c, TREE_TYPE (type));
- /* Or to force_fit_type, if nothing else. */
- tmp = copy_node (c);
- TREE_TYPE (tmp) = type;
- tmp = force_fit_type (tmp, -1, false, false);
- return TREE_INT_CST_HIGH (tmp) == TREE_INT_CST_HIGH (c)
- && TREE_INT_CST_LOW (tmp) == TREE_INT_CST_LOW (c);
+ /* Or to fit_double_type, if nothing else. */
+ low = TREE_INT_CST_LOW (c);
+ high = TREE_INT_CST_HIGH (c);
+ return !fit_double_type (low, high, &low, &high, type);
+}
+
+/* Stores bounds of an integer TYPE in MIN and MAX. If TYPE has non-constant
+ bounds or is a POINTER_TYPE, the maximum and/or minimum values that can be
+ represented (assuming two's-complement arithmetic) within the bit
+ precision of the type are returned instead. */
+
+void
+get_type_static_bounds (const_tree type, mpz_t min, mpz_t max)
+{
+ if (!POINTER_TYPE_P (type) && TYPE_MIN_VALUE (type)
+ && TREE_CODE (TYPE_MIN_VALUE (type)) == INTEGER_CST)
+ mpz_set_double_int (min, tree_to_double_int (TYPE_MIN_VALUE (type)),
+ TYPE_UNSIGNED (type));
+ else
+ {
+ if (TYPE_UNSIGNED (type))
+ mpz_set_ui (min, 0);
+ else
+ {
+ double_int mn;
+ mn = double_int_mask (TYPE_PRECISION (type) - 1);
+ mn = double_int_sext (double_int_add (mn, double_int_one),
+ TYPE_PRECISION (type));
+ mpz_set_double_int (min, mn, false);
+ }
+ }
+
+ if (!POINTER_TYPE_P (type) && TYPE_MAX_VALUE (type)
+ && TREE_CODE (TYPE_MAX_VALUE (type)) == INTEGER_CST)
+ mpz_set_double_int (max, tree_to_double_int (TYPE_MAX_VALUE (type)),
+ TYPE_UNSIGNED (type));
+ else
+ {
+ if (TYPE_UNSIGNED (type))
+ mpz_set_double_int (max, double_int_mask (TYPE_PRECISION (type)),
+ true);
+ else
+ mpz_set_double_int (max, double_int_mask (TYPE_PRECISION (type) - 1),
+ true);
+ }
+}
+
+/* auto_var_in_fn_p is called to determine whether VAR is an automatic
+ variable defined in function FN. */
+
+bool
+auto_var_in_fn_p (const_tree var, const_tree fn)
+{
+ return (DECL_P (var) && DECL_CONTEXT (var) == fn
+ && (((TREE_CODE (var) == VAR_DECL || TREE_CODE (var) == PARM_DECL)
+ && ! TREE_STATIC (var))
+ || TREE_CODE (var) == LABEL_DECL
+ || TREE_CODE (var) == RESULT_DECL));
}
/* Subprogram of following function. Called by walk_tree.
*walk_subtrees = 0;
else if (DECL_P (*tp)
- && lang_hooks.tree_inlining.auto_var_in_fn_p (*tp, fn))
+ && 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. If FN is nonzero, only return true if a modifier of the type
- or position of FN is a variable or parameter inside FN.
+ size. For METHOD_TYPEs and FUNCTION_TYPEs we exclude the
+ arguments, but not the return type. 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
if (type == error_mark_node)
return false;
- /* If TYPE itself has variable size, it is variably modified.
-
- 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. */
+ /* If TYPE itself has variable size, it is variably modified. */
RETURN_TRUE_IF_VAR (TYPE_SIZE (type));
- RETURN_TRUE_IF_VAR (TYPE_SIZE_UNIT(type));
+ RETURN_TRUE_IF_VAR (TYPE_SIZE_UNIT (type));
switch (TREE_CODE (type))
{
case POINTER_TYPE:
case REFERENCE_TYPE:
- case ARRAY_TYPE:
case VECTOR_TYPE:
if (variably_modified_type_p (TREE_TYPE (type), fn))
return true;
case FUNCTION_TYPE:
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 TYPE is a function type, it is variably modified if the
+ return type is variably modified. */
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), fn))
- return true;
break;
case INTEGER_TYPE:
case REAL_TYPE:
+ case FIXED_POINT_TYPE:
case ENUMERAL_TYPE:
case BOOLEAN_TYPE:
- case CHAR_TYPE:
/* Scalar types are variably modified if their end points
aren't constant. */
RETURN_TRUE_IF_VAR (TYPE_MIN_VALUE (type));
case RECORD_TYPE:
case UNION_TYPE:
case QUAL_UNION_TYPE:
- /* We can't see if any of the field are variably-modified by the
+ /* We can't see if any of the fields are variably-modified by the
definition we normally use, since that would produce infinite
recursion via pointers. */
/* This is variably modified if some field's type is. */
}
break;
+ case ARRAY_TYPE:
+ /* Do not call ourselves to avoid infinite recursion. This is
+ variably modified if the element type is. */
+ RETURN_TRUE_IF_VAR (TYPE_SIZE (TREE_TYPE (type)));
+ RETURN_TRUE_IF_VAR (TYPE_SIZE_UNIT (TREE_TYPE (type)));
+ break;
+
default:
break;
}
NULL_TREE if there is no containing scope. */
tree
-get_containing_scope (tree t)
+get_containing_scope (const_tree t)
{
return (TYPE_P (t) ? TYPE_CONTEXT (t) : DECL_CONTEXT (t));
}
a FUNCTION_DECL, or zero if none. */
tree
-decl_function_context (tree decl)
+decl_function_context (const_tree decl)
{
tree context;
TYPE_DECLs and FUNCTION_DECLs are transparent to this function. */
tree
-decl_type_context (tree decl)
+decl_type_context (const_tree decl)
{
tree context = DECL_CONTEXT (decl);
determined. */
tree
-get_callee_fndecl (tree call)
+get_callee_fndecl (const_tree call)
{
tree addr;
+ if (call == error_mark_node)
+ return error_mark_node;
+
/* It's invalid to call this function with anything but a
CALL_EXPR. */
gcc_assert (TREE_CODE (call) == CALL_EXPR);
/* The first operand to the CALL is the address of the function
called. */
- addr = TREE_OPERAND (call, 0);
+ addr = CALL_EXPR_FN (call);
STRIP_NOPS (addr);
print_type_hash_statistics ();
print_debug_expr_statistics ();
print_value_expr_statistics ();
+ print_restrict_base_statistics ();
+ print_decl_for_uid_map_statistics ();
lang_hooks.print_statistics ();
}
\f
*p = '_';
}
-/* Generate a name for a function unique to this translation unit.
+/* Generate a name for a special-purpose function function.
+ The generated name may need to be unique across the whole link.
TYPE is some string to identify the purpose of this function to the
- linker or collect2. */
+ linker or collect2; it must start with an uppercase letter,
+ one of:
+ I - for constructors
+ D - for destructors
+ N - for C++ anonymous namespaces
+ F - for DWARF unwind frame information. */
tree
-get_file_function_name_long (const char *type)
+get_file_function_name (const char *type)
{
char *buf;
const char *p;
char *q;
+ /* If we already have a name we know to be unique, just use that. */
if (first_global_object_name)
p = first_global_object_name;
+ /* If the target is handling the constructors/destructors, they
+ will be local to this file and the name is only necessary for
+ debugging purposes. */
+ else if ((type[0] == 'I' || type[0] == 'D') && targetm.have_ctors_dtors)
+ {
+ const char *file = main_input_filename;
+ if (! file)
+ file = input_filename;
+ /* Just use the file's basename, because the full pathname
+ might be quite long. */
+ p = strrchr (file, '/');
+ if (p)
+ p++;
+ else
+ p = file;
+ p = q = ASTRDUP (p);
+ clean_symbol_name (q);
+ }
else
{
- /* We don't have anything that we know to be unique to this translation
+ /* Otherwise, the name must be unique across the entire link.
+ We don't have anything that we know to be unique to this translation
unit, so use what we do have and throw in some randomness. */
unsigned len;
const char *name = weak_global_object_name;
clean_symbol_name (q);
sprintf (q + len, "_%08X_%08X", crc32_string (0, name),
- crc32_string (0, flag_random_seed));
+ crc32_string (0, get_random_seed (false)));
p = q;
}
return get_identifier (buf);
}
-
-/* If KIND=='I', return a suitable global initializer (constructor) name.
- If KIND=='D', return a suitable global clean-up (destructor) name. */
-
-tree
-get_file_function_name (int kind)
-{
- char p[2];
-
- p[0] = kind;
- p[1] = 0;
-
- return get_file_function_name_long (p);
-}
\f
#if defined ENABLE_TREE_CHECKING && (GCC_VERSION >= 2007)
are of the caller. */
void
-tree_check_failed (const tree node, const char *file,
+tree_check_failed (const_tree node, const char *file,
int line, const char *function, ...)
{
va_list args;
- char *buffer;
+ const char *buffer;
unsigned length = 0;
int code;
va_end (args);
if (length)
{
+ char *tmp;
va_start (args, function);
length += strlen ("expected ");
- buffer = alloca (length);
+ buffer = tmp = alloca (length);
length = 0;
while ((code = va_arg (args, int)))
{
const char *prefix = length ? " or " : "expected ";
- strcpy (buffer + length, prefix);
+ strcpy (tmp + length, prefix);
length += strlen (prefix);
- strcpy (buffer + length, tree_code_name[code]);
+ strcpy (tmp + length, tree_code_name[code]);
length += strlen (tree_code_name[code]);
}
va_end (args);
}
else
- buffer = (char *)"unexpected node";
+ buffer = "unexpected node";
internal_error ("tree check: %s, have %s in %s, at %s:%d",
buffer, tree_code_name[TREE_CODE (node)],
the caller. */
void
-tree_not_check_failed (const tree node, const char *file,
+tree_not_check_failed (const_tree node, const char *file,
int line, const char *function, ...)
{
va_list args;
code, given in CL. */
void
-tree_class_check_failed (const tree node, const enum tree_code_class cl,
+tree_class_check_failed (const_tree node, const enum tree_code_class cl,
const char *file, int line, const char *function)
{
internal_error
TREE_CODE_CLASS_STRING (TREE_CODE_CLASS (TREE_CODE (node))),
tree_code_name[TREE_CODE (node)], function, trim_filename (file), line);
}
+
+/* Similar to tree_check_failed, except that instead of specifying a
+ dozen codes, use the knowledge that they're all sequential. */
+
+void
+tree_range_check_failed (const_tree node, const char *file, int line,
+ const char *function, enum tree_code c1,
+ enum tree_code c2)
+{
+ char *buffer;
+ unsigned length = 0;
+ enum tree_code c;
+
+ for (c = c1; c <= c2; ++c)
+ length += 4 + strlen (tree_code_name[c]);
+
+ length += strlen ("expected ");
+ buffer = alloca (length);
+ length = 0;
+
+ for (c = c1; c <= c2; ++c)
+ {
+ const char *prefix = length ? " or " : "expected ";
+
+ strcpy (buffer + length, prefix);
+ length += strlen (prefix);
+ strcpy (buffer + length, tree_code_name[c]);
+ length += strlen (tree_code_name[c]);
+ }
+
+ internal_error ("tree check: %s, have %s in %s, at %s:%d",
+ buffer, tree_code_name[TREE_CODE (node)],
+ function, trim_filename (file), line);
+}
+
+
+/* Similar to tree_check_failed, except that we check that a tree does
+ not have the specified code, given in CL. */
+
+void
+tree_not_class_check_failed (const_tree node, const enum tree_code_class cl,
+ const char *file, int line, const char *function)
+{
+ internal_error
+ ("tree check: did not expect class %qs, have %qs (%s) in %s, at %s:%d",
+ TREE_CODE_CLASS_STRING (cl),
+ TREE_CODE_CLASS_STRING (TREE_CODE_CLASS (TREE_CODE (node))),
+ tree_code_name[TREE_CODE (node)], function, trim_filename (file), line);
+}
+
+
+/* Similar to tree_check_failed but applied to OMP_CLAUSE codes. */
+
+void
+omp_clause_check_failed (const_tree node, const char *file, int line,
+ const char *function, enum omp_clause_code code)
+{
+ internal_error ("tree check: expected omp_clause %s, have %s in %s, at %s:%d",
+ omp_clause_code_name[code], tree_code_name[TREE_CODE (node)],
+ function, trim_filename (file), line);
+}
+
+
+/* Similar to tree_range_check_failed but applied to OMP_CLAUSE codes. */
+
+void
+omp_clause_range_check_failed (const_tree node, const char *file, int line,
+ const char *function, enum omp_clause_code c1,
+ enum omp_clause_code c2)
+{
+ char *buffer;
+ unsigned length = 0;
+ enum omp_clause_code c;
+
+ for (c = c1; c <= c2; ++c)
+ length += 4 + strlen (omp_clause_code_name[c]);
+
+ length += strlen ("expected ");
+ buffer = alloca (length);
+ length = 0;
+
+ for (c = c1; c <= c2; ++c)
+ {
+ const char *prefix = length ? " or " : "expected ";
+
+ strcpy (buffer + length, prefix);
+ length += strlen (prefix);
+ strcpy (buffer + length, omp_clause_code_name[c]);
+ length += strlen (omp_clause_code_name[c]);
+ }
+
+ internal_error ("tree check: %s, have %s in %s, at %s:%d",
+ buffer, omp_clause_code_name[TREE_CODE (node)],
+ function, trim_filename (file), line);
+}
+
+
#undef DEFTREESTRUCT
#define DEFTREESTRUCT(VAL, NAME) NAME,
whether CODE contains the tree structure identified by EN. */
void
-tree_contains_struct_check_failed (const tree node,
+tree_contains_struct_check_failed (const_tree node,
const enum tree_node_structure_enum en,
const char *file, int line,
const char *function)
{
internal_error
- ("tree check: expected tree that contains %qs structure, have %qs in %s, at %s:%d",
+ ("tree check: expected tree that contains %qs structure, have %qs in %s, at %s:%d",
TS_ENUM_NAME(en),
tree_code_name[TREE_CODE (node)], function, trim_filename (file), line);
}
}
/* Similar to above, except that the check is for the bounds of the operand
- vector of an expression node. */
+ vector of an expression node EXP. */
void
-tree_operand_check_failed (int idx, enum tree_code code, const char *file,
+tree_operand_check_failed (int idx, const_tree exp, const char *file,
int line, const char *function)
{
+ int code = TREE_CODE (exp);
internal_error
("tree check: accessed operand %d of %s with %d operands in %s, at %s:%d",
- idx + 1, tree_code_name[code], TREE_CODE_LENGTH (code),
+ idx + 1, tree_code_name[code], TREE_OPERAND_LENGTH (exp),
function, trim_filename (file), line);
}
+
+/* Similar to above, except that the check is for the number of
+ operands of an OMP_CLAUSE node. */
+
+void
+omp_clause_operand_check_failed (int idx, const_tree t, const char *file,
+ int line, const char *function)
+{
+ internal_error
+ ("tree check: accessed operand %d of omp_clause %s with %d operands "
+ "in %s, at %s:%d", idx + 1, omp_clause_code_name[OMP_CLAUSE_CODE (t)],
+ omp_clause_num_ops [OMP_CLAUSE_CODE (t)], function,
+ trim_filename (file), line);
+}
#endif /* ENABLE_TREE_CHECKING */
\f
/* Create a new vector type node holding SUBPARTS units of type INNERTYPE,
static tree
make_vector_type (tree innertype, int nunits, enum machine_mode mode)
{
- tree t = make_node (VECTOR_TYPE);
+ tree t;
+ hashval_t hashcode = 0;
+ /* Build a main variant, based on the main variant of the inner type, then
+ use it to build the variant we return. */
+ if ((TYPE_ATTRIBUTES (innertype) || TYPE_QUALS (innertype))
+ && TYPE_MAIN_VARIANT (innertype) != innertype)
+ return build_type_attribute_qual_variant (
+ make_vector_type (TYPE_MAIN_VARIANT (innertype), nunits, mode),
+ TYPE_ATTRIBUTES (innertype),
+ TYPE_QUALS (innertype));
+
+ t = make_node (VECTOR_TYPE);
TREE_TYPE (t) = TYPE_MAIN_VARIANT (innertype);
SET_TYPE_VECTOR_SUBPARTS (t, nunits);
TYPE_MODE (t) = mode;
TYPE_READONLY (t) = TYPE_READONLY (innertype);
TYPE_VOLATILE (t) = TYPE_VOLATILE (innertype);
+ if (TYPE_STRUCTURAL_EQUALITY_P (innertype))
+ SET_TYPE_STRUCTURAL_EQUALITY (t);
+ else if (TYPE_CANONICAL (innertype) != innertype
+ || mode != VOIDmode)
+ TYPE_CANONICAL (t)
+ = make_vector_type (TYPE_CANONICAL (innertype), nunits, VOIDmode);
+
layout_type (t);
{
TYPE_UID (rt) = TYPE_UID (t);
}
- /* Build our main variant, based on the main variant of the inner type. */
- if (TYPE_MAIN_VARIANT (innertype) != innertype)
- {
- tree innertype_main_variant = TYPE_MAIN_VARIANT (innertype);
- unsigned int hash = TYPE_HASH (innertype_main_variant);
- TYPE_MAIN_VARIANT (t)
- = type_hash_canon (hash, make_vector_type (innertype_main_variant,
- nunits, mode));
- }
-
- return t;
+ hashcode = iterative_hash_host_wide_int (VECTOR_TYPE, hashcode);
+ hashcode = iterative_hash_host_wide_int (mode, hashcode);
+ hashcode = iterative_hash_object (TYPE_HASH (innertype), hashcode);
+ return type_hash_canon (hashcode, t);
}
static tree
return make_signed_type (size);
}
+/* Create or reuse a fract type by SIZE, UNSIGNEDP, and SATP. */
+
+static tree
+make_or_reuse_fract_type (unsigned size, int unsignedp, int satp)
+{
+ if (satp)
+ {
+ if (size == SHORT_FRACT_TYPE_SIZE)
+ return unsignedp ? sat_unsigned_short_fract_type_node
+ : sat_short_fract_type_node;
+ if (size == FRACT_TYPE_SIZE)
+ return unsignedp ? sat_unsigned_fract_type_node : sat_fract_type_node;
+ if (size == LONG_FRACT_TYPE_SIZE)
+ return unsignedp ? sat_unsigned_long_fract_type_node
+ : sat_long_fract_type_node;
+ if (size == LONG_LONG_FRACT_TYPE_SIZE)
+ return unsignedp ? sat_unsigned_long_long_fract_type_node
+ : sat_long_long_fract_type_node;
+ }
+ else
+ {
+ if (size == SHORT_FRACT_TYPE_SIZE)
+ return unsignedp ? unsigned_short_fract_type_node
+ : short_fract_type_node;
+ if (size == FRACT_TYPE_SIZE)
+ return unsignedp ? unsigned_fract_type_node : fract_type_node;
+ if (size == LONG_FRACT_TYPE_SIZE)
+ return unsignedp ? unsigned_long_fract_type_node
+ : long_fract_type_node;
+ if (size == LONG_LONG_FRACT_TYPE_SIZE)
+ return unsignedp ? unsigned_long_long_fract_type_node
+ : long_long_fract_type_node;
+ }
+
+ return make_fract_type (size, unsignedp, satp);
+}
+
+/* Create or reuse an accum type by SIZE, UNSIGNEDP, and SATP. */
+
+static tree
+make_or_reuse_accum_type (unsigned size, int unsignedp, int satp)
+{
+ if (satp)
+ {
+ if (size == SHORT_ACCUM_TYPE_SIZE)
+ return unsignedp ? sat_unsigned_short_accum_type_node
+ : sat_short_accum_type_node;
+ if (size == ACCUM_TYPE_SIZE)
+ return unsignedp ? sat_unsigned_accum_type_node : sat_accum_type_node;
+ if (size == LONG_ACCUM_TYPE_SIZE)
+ return unsignedp ? sat_unsigned_long_accum_type_node
+ : sat_long_accum_type_node;
+ if (size == LONG_LONG_ACCUM_TYPE_SIZE)
+ return unsignedp ? sat_unsigned_long_long_accum_type_node
+ : sat_long_long_accum_type_node;
+ }
+ else
+ {
+ if (size == SHORT_ACCUM_TYPE_SIZE)
+ return unsignedp ? unsigned_short_accum_type_node
+ : short_accum_type_node;
+ if (size == ACCUM_TYPE_SIZE)
+ return unsignedp ? unsigned_accum_type_node : accum_type_node;
+ if (size == LONG_ACCUM_TYPE_SIZE)
+ return unsignedp ? unsigned_long_accum_type_node
+ : long_accum_type_node;
+ if (size == LONG_LONG_ACCUM_TYPE_SIZE)
+ return unsignedp ? unsigned_long_long_accum_type_node
+ : long_long_accum_type_node;
+ }
+
+ return make_accum_type (size, unsignedp, satp);
+}
+
/* Create nodes for all integer types (and error_mark_node) using the sizes
of C datatypes. The caller should call set_sizetype soon after calling
this function to select one of the types as sizetype. */
/* Define both `signed char' and `unsigned char'. */
signed_char_type_node = make_signed_type (CHAR_TYPE_SIZE);
+ TYPE_STRING_FLAG (signed_char_type_node) = 1;
unsigned_char_type_node = make_unsigned_type (CHAR_TYPE_SIZE);
+ TYPE_STRING_FLAG (unsigned_char_type_node) = 1;
/* Define `char', which is like either `signed char' or `unsigned char'
but not the same as either. */
= (signed_char
? make_signed_type (CHAR_TYPE_SIZE)
: make_unsigned_type (CHAR_TYPE_SIZE));
+ TYPE_STRING_FLAG (char_type_node) = 1;
short_integer_type_node = make_signed_type (SHORT_TYPE_SIZE);
short_unsigned_type_node = make_unsigned_type (SHORT_TYPE_SIZE);
long_double_ptr_type_node = build_pointer_type (long_double_type_node);
integer_ptr_type_node = build_pointer_type (integer_type_node);
- complex_integer_type_node = make_node (COMPLEX_TYPE);
- TREE_TYPE (complex_integer_type_node) = integer_type_node;
- layout_type (complex_integer_type_node);
-
- complex_float_type_node = make_node (COMPLEX_TYPE);
- TREE_TYPE (complex_float_type_node) = float_type_node;
- layout_type (complex_float_type_node);
-
- complex_double_type_node = make_node (COMPLEX_TYPE);
- TREE_TYPE (complex_double_type_node) = double_type_node;
- layout_type (complex_double_type_node);
-
- complex_long_double_type_node = make_node (COMPLEX_TYPE);
- TREE_TYPE (complex_long_double_type_node) = long_double_type_node;
- layout_type (complex_long_double_type_node);
+ /* Fixed size integer types. */
+ uint32_type_node = build_nonstandard_integer_type (32, true);
+ uint64_type_node = build_nonstandard_integer_type (64, true);
+
+ /* Decimal float types. */
+ dfloat32_type_node = make_node (REAL_TYPE);
+ TYPE_PRECISION (dfloat32_type_node) = DECIMAL32_TYPE_SIZE;
+ layout_type (dfloat32_type_node);
+ TYPE_MODE (dfloat32_type_node) = SDmode;
+ dfloat32_ptr_type_node = build_pointer_type (dfloat32_type_node);
+
+ dfloat64_type_node = make_node (REAL_TYPE);
+ TYPE_PRECISION (dfloat64_type_node) = DECIMAL64_TYPE_SIZE;
+ layout_type (dfloat64_type_node);
+ TYPE_MODE (dfloat64_type_node) = DDmode;
+ dfloat64_ptr_type_node = build_pointer_type (dfloat64_type_node);
+
+ dfloat128_type_node = make_node (REAL_TYPE);
+ TYPE_PRECISION (dfloat128_type_node) = DECIMAL128_TYPE_SIZE;
+ layout_type (dfloat128_type_node);
+ TYPE_MODE (dfloat128_type_node) = TDmode;
+ dfloat128_ptr_type_node = build_pointer_type (dfloat128_type_node);
+
+ complex_integer_type_node = build_complex_type (integer_type_node);
+ complex_float_type_node = build_complex_type (float_type_node);
+ complex_double_type_node = build_complex_type (double_type_node);
+ complex_long_double_type_node = build_complex_type (long_double_type_node);
+
+/* Make fixed-point nodes based on sat/non-sat and signed/unsigned. */
+#define MAKE_FIXED_TYPE_NODE(KIND,WIDTH,SIZE) \
+ sat_ ## WIDTH ## KIND ## _type_node = \
+ make_sat_signed_ ## KIND ## _type (SIZE); \
+ sat_unsigned_ ## WIDTH ## KIND ## _type_node = \
+ make_sat_unsigned_ ## KIND ## _type (SIZE); \
+ WIDTH ## KIND ## _type_node = make_signed_ ## KIND ## _type (SIZE); \
+ unsigned_ ## WIDTH ## KIND ## _type_node = \
+ make_unsigned_ ## KIND ## _type (SIZE);
+
+/* Make fixed-point type nodes based on four different widths. */
+#define MAKE_FIXED_TYPE_NODE_FAMILY(N1,N2) \
+ MAKE_FIXED_TYPE_NODE (N1, short_, SHORT_ ## N2 ## _TYPE_SIZE) \
+ MAKE_FIXED_TYPE_NODE (N1, , N2 ## _TYPE_SIZE) \
+ MAKE_FIXED_TYPE_NODE (N1, long_, LONG_ ## N2 ## _TYPE_SIZE) \
+ MAKE_FIXED_TYPE_NODE (N1, long_long_, LONG_LONG_ ## N2 ## _TYPE_SIZE)
+
+/* Make fixed-point mode nodes based on sat/non-sat and signed/unsigned. */
+#define MAKE_FIXED_MODE_NODE(KIND,NAME,MODE) \
+ NAME ## _type_node = \
+ make_or_reuse_signed_ ## KIND ## _type (GET_MODE_BITSIZE (MODE ## mode)); \
+ u ## NAME ## _type_node = \
+ make_or_reuse_unsigned_ ## KIND ## _type \
+ (GET_MODE_BITSIZE (U ## MODE ## mode)); \
+ sat_ ## NAME ## _type_node = \
+ make_or_reuse_sat_signed_ ## KIND ## _type \
+ (GET_MODE_BITSIZE (MODE ## mode)); \
+ sat_u ## NAME ## _type_node = \
+ make_or_reuse_sat_unsigned_ ## KIND ## _type \
+ (GET_MODE_BITSIZE (U ## MODE ## mode));
+
+ /* Fixed-point type and mode nodes. */
+ MAKE_FIXED_TYPE_NODE_FAMILY (fract, FRACT)
+ MAKE_FIXED_TYPE_NODE_FAMILY (accum, ACCUM)
+ MAKE_FIXED_MODE_NODE (fract, qq, QQ)
+ MAKE_FIXED_MODE_NODE (fract, hq, HQ)
+ MAKE_FIXED_MODE_NODE (fract, sq, SQ)
+ MAKE_FIXED_MODE_NODE (fract, dq, DQ)
+ MAKE_FIXED_MODE_NODE (fract, tq, TQ)
+ MAKE_FIXED_MODE_NODE (accum, ha, HA)
+ MAKE_FIXED_MODE_NODE (accum, sa, SA)
+ MAKE_FIXED_MODE_NODE (accum, da, DA)
+ MAKE_FIXED_MODE_NODE (accum, ta, TA)
{
tree t = targetm.build_builtin_va_list ();
declare the type to be __builtin_va_list. */
if (TREE_CODE (t) != RECORD_TYPE)
t = build_variant_type_copy (t);
-
+
va_list_type_node = t;
}
}
{
tree decl;
- decl = lang_hooks.builtin_function (name, type, code, BUILT_IN_NORMAL,
- library_name, NULL_TREE);
+ decl = add_builtin_function (name, type, code, BUILT_IN_NORMAL,
+ library_name, NULL_TREE);
if (ecf_flags & ECF_CONST)
TREE_READONLY (decl) = 1;
if (ecf_flags & ECF_PURE)
"__builtin_nonlocal_goto",
ECF_NORETURN | ECF_NOTHROW);
+ tmp = tree_cons (NULL_TREE, ptr_type_node, void_list_node);
+ tmp = tree_cons (NULL_TREE, ptr_type_node, tmp);
+ ftype = build_function_type (void_type_node, tmp);
+ local_define_builtin ("__builtin_setjmp_setup", ftype,
+ BUILT_IN_SETJMP_SETUP,
+ "__builtin_setjmp_setup", ECF_NOTHROW);
+
+ tmp = tree_cons (NULL_TREE, ptr_type_node, void_list_node);
+ ftype = build_function_type (ptr_type_node, tmp);
+ local_define_builtin ("__builtin_setjmp_dispatcher", ftype,
+ BUILT_IN_SETJMP_DISPATCHER,
+ "__builtin_setjmp_dispatcher",
+ ECF_PURE | ECF_NOTHROW);
+
+ tmp = tree_cons (NULL_TREE, ptr_type_node, void_list_node);
+ ftype = build_function_type (void_type_node, tmp);
+ local_define_builtin ("__builtin_setjmp_receiver", ftype,
+ BUILT_IN_SETJMP_RECEIVER,
+ "__builtin_setjmp_receiver", ECF_NOTHROW);
+
ftype = build_function_type (ptr_type_node, void_list_node);
local_define_builtin ("__builtin_stack_save", ftype, BUILT_IN_STACK_SAVE,
"__builtin_stack_save", ECF_NOTHROW);
reconstruct_complex_type (tree type, tree bottom)
{
tree inner, outer;
-
- if (POINTER_TYPE_P (type))
+
+ if (TREE_CODE (type) == POINTER_TYPE)
+ {
+ inner = reconstruct_complex_type (TREE_TYPE (type), bottom);
+ outer = build_pointer_type_for_mode (inner, TYPE_MODE (type),
+ TYPE_REF_CAN_ALIAS_ALL (type));
+ }
+ else if (TREE_CODE (type) == REFERENCE_TYPE)
{
inner = reconstruct_complex_type (TREE_TYPE (type), bottom);
- outer = build_pointer_type (inner);
+ outer = build_reference_type_for_mode (inner, TYPE_MODE (type),
+ TYPE_REF_CAN_ALIAS_ALL (type));
}
else if (TREE_CODE (type) == ARRAY_TYPE)
{
}
else if (TREE_CODE (type) == METHOD_TYPE)
{
- tree argtypes;
inner = reconstruct_complex_type (TREE_TYPE (type), bottom);
/* The build_method_type_directly() routine prepends 'this' to argument list,
so we must compensate by getting rid of it. */
- argtypes = TYPE_ARG_TYPES (type);
- outer = build_method_type_directly (TYPE_METHOD_BASETYPE (type),
- inner,
- TYPE_ARG_TYPES (type));
- TYPE_ARG_TYPES (outer) = argtypes;
+ outer
+ = build_method_type_directly
+ (TREE_TYPE (TREE_VALUE (TYPE_ARG_TYPES (type))),
+ inner,
+ TREE_CHAIN (TYPE_ARG_TYPES (type)));
+ }
+ else if (TREE_CODE (type) == OFFSET_TYPE)
+ {
+ inner = reconstruct_complex_type (TREE_TYPE (type), bottom);
+ outer = build_offset_type (TYPE_OFFSET_BASETYPE (type), inner);
}
else
return bottom;
- TYPE_READONLY (outer) = TYPE_READONLY (type);
- TYPE_VOLATILE (outer) = TYPE_VOLATILE (type);
-
- return outer;
+ return build_qualified_type (outer, TYPE_QUALS (type));
}
/* Returns a vector tree node given a mode (integer, vector, or BLKmode) and
{
case MODE_VECTOR_INT:
case MODE_VECTOR_FLOAT:
+ case MODE_VECTOR_FRACT:
+ case MODE_VECTOR_UFRACT:
+ case MODE_VECTOR_ACCUM:
+ case MODE_VECTOR_UACCUM:
nunits = GET_MODE_NUNITS (mode);
break;
return make_vector_type (innertype, nunits, VOIDmode);
}
+
/* Build RESX_EXPR with given REGION_NUMBER. */
tree
build_resx (int region_number)
/* Given an initializer INIT, return TRUE if INIT is zero or some
aggregate of zeros. Otherwise return FALSE. */
bool
-initializer_zerop (tree init)
+initializer_zerop (const_tree init)
{
tree elt;
return real_zerop (init)
&& ! REAL_VALUE_MINUS_ZERO (TREE_REAL_CST (init));
+ case FIXED_CST:
+ return fixed_zerop (init);
+
case COMPLEX_CST:
return integer_zerop (init)
|| (real_zerop (init)
}
}
-void
-add_var_to_bind_expr (tree bind_expr, tree var)
-{
- BIND_EXPR_VARS (bind_expr)
- = chainon (BIND_EXPR_VARS (bind_expr), var);
- if (BIND_EXPR_BLOCK (bind_expr))
- BLOCK_VARS (BIND_EXPR_BLOCK (bind_expr))
- = BIND_EXPR_VARS (bind_expr);
-}
-
/* Build an empty statement. */
tree
}
-/* 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. */
+/* Build an OpenMP clause with code CODE. */
-bool
-in_array_bounds_p (tree ref)
+tree
+build_omp_clause (enum omp_clause_code code)
{
- tree idx = TREE_OPERAND (ref, 1);
- tree min, max;
+ tree t;
+ int size, length;
- if (TREE_CODE (idx) != INTEGER_CST)
- return false;
+ length = omp_clause_num_ops[code];
+ size = (sizeof (struct tree_omp_clause) + (length - 1) * sizeof (tree));
- 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;
+ t = ggc_alloc (size);
+ memset (t, 0, size);
+ TREE_SET_CODE (t, OMP_CLAUSE);
+ OMP_CLAUSE_SET_CODE (t, code);
+
+#ifdef GATHER_STATISTICS
+ tree_node_counts[(int) omp_clause_kind]++;
+ tree_node_sizes[(int) omp_clause_kind] += size;
+#endif
+
+ return t;
+}
+
+/* Set various status flags when building a CALL_EXPR object T. */
+
+static void
+process_call_operands (tree t)
+{
+ bool side_effects;
+
+ side_effects = TREE_SIDE_EFFECTS (t);
+ if (!side_effects)
+ {
+ int i, n;
+ n = TREE_OPERAND_LENGTH (t);
+ for (i = 1; i < n; i++)
+ {
+ tree op = TREE_OPERAND (t, i);
+ if (op && TREE_SIDE_EFFECTS (op))
+ {
+ side_effects = 1;
+ break;
+ }
+ }
+ }
+ if (!side_effects)
+ {
+ int i;
+
+ /* Calls have side-effects, except those to const or
+ pure functions. */
+ i = call_expr_flags (t);
+ if (!(i & (ECF_CONST | ECF_PURE)))
+ side_effects = 1;
+ }
+ TREE_SIDE_EFFECTS (t) = side_effects;
+}
+
+/* Build a tcc_vl_exp object with code CODE and room for LEN operands. LEN
+ includes the implicit operand count in TREE_OPERAND 0, and so must be >= 1.
+ Except for the CODE and operand count field, other storage for the
+ object is initialized to zeros. */
+
+tree
+build_vl_exp_stat (enum tree_code code, int len MEM_STAT_DECL)
+{
+ tree t;
+ int length = (len - 1) * sizeof (tree) + sizeof (struct tree_exp);
+
+ gcc_assert (TREE_CODE_CLASS (code) == tcc_vl_exp);
+ gcc_assert (len >= 1);
+
+#ifdef GATHER_STATISTICS
+ tree_node_counts[(int) e_kind]++;
+ tree_node_sizes[(int) e_kind] += length;
+#endif
+
+ t = ggc_alloc_zone_pass_stat (length, &tree_zone);
+
+ memset (t, 0, length);
+
+ TREE_SET_CODE (t, code);
+
+ /* Can't use TREE_OPERAND to store the length because if checking is
+ enabled, it will try to check the length before we store it. :-P */
+ t->exp.operands[0] = build_int_cst (sizetype, len);
+
+ return t;
+}
+
+
+/* Build a CALL_EXPR of class tcc_vl_exp with the indicated RETURN_TYPE
+ and FN and a null static chain slot. ARGLIST is a TREE_LIST of the
+ arguments. */
+
+tree
+build_call_list (tree return_type, tree fn, tree arglist)
+{
+ tree t;
+ int i;
+
+ t = build_vl_exp (CALL_EXPR, list_length (arglist) + 3);
+ TREE_TYPE (t) = return_type;
+ CALL_EXPR_FN (t) = fn;
+ CALL_EXPR_STATIC_CHAIN (t) = NULL_TREE;
+ for (i = 0; arglist; arglist = TREE_CHAIN (arglist), i++)
+ CALL_EXPR_ARG (t, i) = TREE_VALUE (arglist);
+ process_call_operands (t);
+ return t;
+}
+
+/* Build a CALL_EXPR of class tcc_vl_exp with the indicated RETURN_TYPE and
+ FN and a null static chain slot. NARGS is the number of call arguments
+ which are specified as "..." arguments. */
+
+tree
+build_call_nary (tree return_type, tree fn, int nargs, ...)
+{
+ tree ret;
+ va_list args;
+ va_start (args, nargs);
+ ret = build_call_valist (return_type, fn, nargs, args);
+ va_end (args);
+ return ret;
+}
+
+/* Build a CALL_EXPR of class tcc_vl_exp with the indicated RETURN_TYPE and
+ FN and a null static chain slot. NARGS is the number of call arguments
+ which are specified as a va_list ARGS. */
+
+tree
+build_call_valist (tree return_type, tree fn, int nargs, va_list args)
+{
+ tree t;
+ int i;
+
+ t = build_vl_exp (CALL_EXPR, nargs + 3);
+ TREE_TYPE (t) = return_type;
+ CALL_EXPR_FN (t) = fn;
+ CALL_EXPR_STATIC_CHAIN (t) = NULL_TREE;
+ for (i = 0; i < nargs; i++)
+ CALL_EXPR_ARG (t, i) = va_arg (args, tree);
+ process_call_operands (t);
+ return t;
+}
+
+/* Build a CALL_EXPR of class tcc_vl_exp with the indicated RETURN_TYPE and
+ FN and a null static chain slot. NARGS is the number of call arguments
+ which are specified as a tree array ARGS. */
+
+tree
+build_call_array (tree return_type, tree fn, int nargs, tree *args)
+{
+ tree t;
+ int i;
+
+ t = build_vl_exp (CALL_EXPR, nargs + 3);
+ TREE_TYPE (t) = return_type;
+ CALL_EXPR_FN (t) = fn;
+ CALL_EXPR_STATIC_CHAIN (t) = NULL_TREE;
+ for (i = 0; i < nargs; i++)
+ CALL_EXPR_ARG (t, i) = args[i];
+ process_call_operands (t);
+ return t;
+}
+
+
+/* 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
+in_array_bounds_p (tree ref)
+{
+ 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 true;
}
-/* Return true if T (assumed to be a DECL) is a global variable. */
+/* Returns true if it is possible to prove that the range of
+ an array access REF (an ARRAY_RANGE_REF expression) falls
+ into the array bounds. */
bool
-is_global_var (tree t)
+range_in_array_bounds_p (tree ref)
{
- return (TREE_STATIC (t) || DECL_EXTERNAL (t));
+ tree domain_type = TYPE_DOMAIN (TREE_TYPE (ref));
+ tree range_min, range_max, min, max;
+
+ range_min = TYPE_MIN_VALUE (domain_type);
+ range_max = TYPE_MAX_VALUE (domain_type);
+ if (!range_min
+ || !range_max
+ || TREE_CODE (range_min) != INTEGER_CST
+ || TREE_CODE (range_max) != 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 (range_min, min)
+ || tree_int_cst_lt (max, range_max))
+ return false;
+
+ return true;
}
/* Return true if T (assumed to be a DECL) must be assigned a memory
location. */
bool
-needs_to_live_in_memory (tree t)
+needs_to_live_in_memory (const_tree t)
{
+ if (TREE_CODE (t) == SSA_NAME)
+ t = SSA_NAME_VAR (t);
+
return (TREE_ADDRESSABLE (t)
|| is_global_var (t)
|| (TREE_CODE (t) == RESULT_DECL
are compatible. It is assumed that the parent records are compatible. */
bool
-fields_compatible_p (tree f1, tree f2)
+fields_compatible_p (const_tree f1, const_tree f2)
{
if (!operand_equal_p (DECL_FIELD_BIT_OFFSET (f1),
DECL_FIELD_BIT_OFFSET (f2), OEP_ONLY_CONST))
DECL_FIELD_OFFSET (f2), OEP_ONLY_CONST))
return false;
- if (!lang_hooks.types_compatible_p (TREE_TYPE (f1), TREE_TYPE (f2)))
+ if (!types_compatible_p (TREE_TYPE (f1), TREE_TYPE (f2)))
return false;
return true;
return orig_field;
}
-/* Return value of a constant X. */
+/* Return value of a constant X and sign-extend it. */
HOST_WIDE_INT
-int_cst_value (tree x)
+int_cst_value (const_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;
- gcc_assert (bits <= HOST_BITS_PER_WIDE_INT);
+ /* Make sure the sign-extended value will fit in a HOST_WIDE_INT. */
+ gcc_assert (TREE_INT_CST_HIGH (x) == 0
+ || TREE_INT_CST_HIGH (x) == -1);
- if (negative)
- val |= (~(unsigned HOST_WIDE_INT) 0) << (bits - 1) << 1;
- else
- val &= ~((~(unsigned HOST_WIDE_INT) 0) << (bits - 1) << 1);
+ if (bits < HOST_BITS_PER_WIDE_INT)
+ {
+ bool negative = ((val >> (bits - 1)) & 1) != 0;
+ 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. */
+/* If TYPE is an integral type, return an equivalent type which is
+ unsigned iff UNSIGNEDP is true. If TYPE is not an integral type,
+ return TYPE itself. */
tree
-tree_fold_gcd (tree a, tree b)
+signed_or_unsigned_type_for (int unsignedp, tree type)
{
- tree a_mod_b;
- tree type = TREE_TYPE (a);
-
- gcc_assert (TREE_CODE (a) == INTEGER_CST);
- gcc_assert (TREE_CODE (b) == INTEGER_CST);
-
- if (integer_zerop (a))
- return b;
-
- if (integer_zerop (b))
- return a;
-
- if (tree_int_cst_sgn (a) == -1)
- a = fold_build2 (MULT_EXPR, type, a,
- convert (type, integer_minus_one_node));
-
- if (tree_int_cst_sgn (b) == -1)
- b = fold_build2 (MULT_EXPR, type, b,
- convert (type, integer_minus_one_node));
-
- while (1)
- {
- a_mod_b = fold_build2 (FLOOR_MOD_EXPR, type, a, b);
-
- if (!TREE_INT_CST_LOW (a_mod_b)
- && !TREE_INT_CST_HIGH (a_mod_b))
- return b;
+ tree t = type;
+ if (POINTER_TYPE_P (type))
+ t = size_type_node;
- a = b;
- b = a_mod_b;
- }
+ if (!INTEGRAL_TYPE_P (t) || TYPE_UNSIGNED (t) == unsignedp)
+ return t;
+
+ return lang_hooks.types.type_for_size (TYPE_PRECISION (t), unsignedp);
}
/* Returns unsigned variant of TYPE. */
tree
unsigned_type_for (tree type)
{
- return lang_hooks.types.unsigned_type (type);
+ return signed_or_unsigned_type_for (1, type);
}
/* Returns signed variant of TYPE. */
tree
signed_type_for (tree type)
{
- return lang_hooks.types.signed_type (type);
+ return signed_or_unsigned_type_for (0, type);
}
/* Returns the largest value obtainable by casting something in INNER type to
and get the same result, only slower. */
int
-operand_equal_for_phi_arg_p (tree arg0, tree arg1)
+operand_equal_for_phi_arg_p (const_tree arg0, const_tree arg1)
{
if (arg0 == arg1)
return 1;
??? Use ffs if available? */
tree
-num_ending_zeros (tree x)
+num_ending_zeros (const_tree x)
{
unsigned HOST_WIDE_INT fr, nfr;
unsigned num, abits;
#define WALK_SUBTREE(NODE) \
do \
{ \
- result = walk_tree (&(NODE), func, data, pset); \
+ result = walk_tree_1 (&(NODE), func, data, pset, lh); \
if (result) \
return result; \
} \
static tree
walk_type_fields (tree type, walk_tree_fn func, void *data,
- struct pointer_set_t *pset)
+ struct pointer_set_t *pset, walk_tree_lh lh)
{
tree result = NULL_TREE;
break;
case ARRAY_TYPE:
- /* Don't follow this nodes's type if a pointer for fear that we'll
- have infinite recursion. Those types are uninteresting anyway. */
- if (!POINTER_TYPE_P (TREE_TYPE (type))
- && TREE_CODE (TREE_TYPE (type)) != OFFSET_TYPE)
+ /* Don't follow this nodes's type if a pointer for fear that
+ we'll have infinite recursion. If we have a PSET, then we
+ need not fear. */
+ if (pset
+ || (!POINTER_TYPE_P (TREE_TYPE (type))
+ && TREE_CODE (TREE_TYPE (type)) != OFFSET_TYPE))
WALK_SUBTREE (TREE_TYPE (type));
WALK_SUBTREE (TYPE_DOMAIN (type));
break;
- case BOOLEAN_TYPE:
- case ENUMERAL_TYPE:
- case INTEGER_TYPE:
- case CHAR_TYPE:
- case REAL_TYPE:
- WALK_SUBTREE (TYPE_MIN_VALUE (type));
- WALK_SUBTREE (TYPE_MAX_VALUE (type));
- break;
-
case OFFSET_TYPE:
WALK_SUBTREE (TREE_TYPE (type));
WALK_SUBTREE (TYPE_OFFSET_BASETYPE (type));
and to avoid visiting a node more than once. */
tree
-walk_tree (tree *tp, walk_tree_fn func, void *data, struct pointer_set_t *pset)
+walk_tree_1 (tree *tp, walk_tree_fn func, void *data,
+ struct pointer_set_t *pset, walk_tree_lh lh)
{
enum tree_code code;
int walk_subtrees;
interesting below this point in the tree. */
if (!walk_subtrees)
{
+ /* But we still need to check our siblings. */
if (code == TREE_LIST)
- /* But we still need to check our siblings. */
WALK_SUBTREE_TAIL (TREE_CHAIN (*tp));
+ else if (code == OMP_CLAUSE)
+ WALK_SUBTREE_TAIL (OMP_CLAUSE_CHAIN (*tp));
else
return NULL_TREE;
}
- result = lang_hooks.tree_inlining.walk_subtrees (tp, &walk_subtrees, func,
- data, pset);
- if (result || ! walk_subtrees)
- return result;
-
- /* If this is a DECL_EXPR, walk into various fields of the type that it's
- defining. We only want to walk into these fields of a type in this
- case. Note that decls get walked as part of the processing of a
- BIND_EXPR.
+ if (lh)
+ {
+ result = (*lh) (tp, &walk_subtrees, func, data, pset);
+ if (result || !walk_subtrees)
+ return result;
+ }
- ??? Precisely which fields of types that we are supposed to walk in
- this case vs. the normal case aren't well defined. */
- if (code == DECL_EXPR
- && TREE_CODE (DECL_EXPR_DECL (*tp)) == TYPE_DECL
- && TREE_CODE (TREE_TYPE (DECL_EXPR_DECL (*tp))) != ERROR_MARK)
+ switch (code)
{
- tree *type_p = &TREE_TYPE (DECL_EXPR_DECL (*tp));
+ case ERROR_MARK:
+ case IDENTIFIER_NODE:
+ case INTEGER_CST:
+ case REAL_CST:
+ case FIXED_CST:
+ case VECTOR_CST:
+ case STRING_CST:
+ case BLOCK:
+ case PLACEHOLDER_EXPR:
+ case SSA_NAME:
+ case FIELD_DECL:
+ case RESULT_DECL:
+ /* None of these have subtrees other than those already walked
+ above. */
+ break;
- /* Call the function for the type. See if it returns anything or
- doesn't want us to continue. If we are to continue, walk both
- the normal fields and those for the declaration case. */
- result = (*func) (type_p, &walk_subtrees, data);
- if (result || !walk_subtrees)
- return NULL_TREE;
+ case TREE_LIST:
+ WALK_SUBTREE (TREE_VALUE (*tp));
+ WALK_SUBTREE_TAIL (TREE_CHAIN (*tp));
+ break;
- result = walk_type_fields (*type_p, func, data, pset);
- if (result)
- return result;
+ case TREE_VEC:
+ {
+ int len = TREE_VEC_LENGTH (*tp);
- WALK_SUBTREE (TYPE_SIZE (*type_p));
- WALK_SUBTREE (TYPE_SIZE_UNIT (*type_p));
+ if (len == 0)
+ break;
- /* If this is a record type, also walk the fields. */
- if (TREE_CODE (*type_p) == RECORD_TYPE
- || TREE_CODE (*type_p) == UNION_TYPE
- || TREE_CODE (*type_p) == QUAL_UNION_TYPE)
- {
- tree field;
+ /* Walk all elements but the first. */
+ while (--len)
+ WALK_SUBTREE (TREE_VEC_ELT (*tp, len));
- for (field = TYPE_FIELDS (*type_p); field;
- field = TREE_CHAIN (field))
- {
- /* We'd like to look at the type of the field, but we can easily
- get infinite recursion. So assume it's pointed to elsewhere
- in the tree. Also, ignore things that aren't fields. */
- if (TREE_CODE (field) != FIELD_DECL)
- continue;
-
- WALK_SUBTREE (DECL_FIELD_OFFSET (field));
- WALK_SUBTREE (DECL_SIZE (field));
- WALK_SUBTREE (DECL_SIZE_UNIT (field));
- if (TREE_CODE (*type_p) == QUAL_UNION_TYPE)
- WALK_SUBTREE (DECL_QUALIFIER (field));
- }
- }
- }
+ /* Now walk the first one as a tail call. */
+ WALK_SUBTREE_TAIL (TREE_VEC_ELT (*tp, 0));
+ }
- else if (code != SAVE_EXPR
- && code != BIND_EXPR
- && IS_EXPR_CODE_CLASS (TREE_CODE_CLASS (code)))
- {
- int i, len;
+ case COMPLEX_CST:
+ WALK_SUBTREE (TREE_REALPART (*tp));
+ WALK_SUBTREE_TAIL (TREE_IMAGPART (*tp));
- /* Walk over all the sub-trees of this operand. */
- len = TREE_CODE_LENGTH (code);
- /* TARGET_EXPRs are peculiar: operands 1 and 3 can be the same.
- But, we only want to walk once. */
- if (code == TARGET_EXPR
- && TREE_OPERAND (*tp, 3) == TREE_OPERAND (*tp, 1))
- --len;
+ case CONSTRUCTOR:
+ {
+ unsigned HOST_WIDE_INT idx;
+ constructor_elt *ce;
- /* Go through the subtrees. We need to do this in forward order so
- that the scope of a FOR_EXPR is handled properly. */
-#ifdef DEBUG_WALK_TREE
- for (i = 0; i < len; ++i)
- WALK_SUBTREE (TREE_OPERAND (*tp, i));
-#else
- for (i = 0; i < len - 1; ++i)
- WALK_SUBTREE (TREE_OPERAND (*tp, i));
+ for (idx = 0;
+ VEC_iterate(constructor_elt, CONSTRUCTOR_ELTS (*tp), idx, ce);
+ idx++)
+ WALK_SUBTREE (ce->value);
+ }
+ break;
- if (len)
- {
- /* The common case is that we may tail recurse here. */
- if (code != BIND_EXPR
- && !TREE_CHAIN (*tp))
- WALK_SUBTREE_TAIL (TREE_OPERAND (*tp, len - 1));
- else
- WALK_SUBTREE (TREE_OPERAND (*tp, len - 1));
- }
-#endif
- }
+ case SAVE_EXPR:
+ WALK_SUBTREE_TAIL (TREE_OPERAND (*tp, 0));
- /* If this is a type, walk the needed fields in the type. */
- else if (TYPE_P (*tp))
- {
- result = walk_type_fields (*tp, func, data, pset);
- if (result)
- return result;
- }
- else
- {
- /* Not one of the easy cases. We must explicitly go through the
- children. */
- switch (code)
- {
- case ERROR_MARK:
- case IDENTIFIER_NODE:
- case INTEGER_CST:
- case REAL_CST:
- case VECTOR_CST:
- case STRING_CST:
- case BLOCK:
- case PLACEHOLDER_EXPR:
- case SSA_NAME:
- case FIELD_DECL:
- case RESULT_DECL:
- /* None of these have subtrees other than those already walked
- above. */
- break;
+ case BIND_EXPR:
+ {
+ tree decl;
+ for (decl = BIND_EXPR_VARS (*tp); decl; decl = TREE_CHAIN (decl))
+ {
+ /* Walk the DECL_INITIAL and DECL_SIZE. We don't want to walk
+ into declarations that are just mentioned, rather than
+ declared; they don't really belong to this part of the tree.
+ And, we can see cycles: the initializer for a declaration
+ can refer to the declaration itself. */
+ WALK_SUBTREE (DECL_INITIAL (decl));
+ WALK_SUBTREE (DECL_SIZE (decl));
+ WALK_SUBTREE (DECL_SIZE_UNIT (decl));
+ }
+ WALK_SUBTREE_TAIL (BIND_EXPR_BODY (*tp));
+ }
- case TREE_LIST:
- WALK_SUBTREE (TREE_VALUE (*tp));
- WALK_SUBTREE_TAIL (TREE_CHAIN (*tp));
- break;
+ case STATEMENT_LIST:
+ {
+ tree_stmt_iterator i;
+ for (i = tsi_start (*tp); !tsi_end_p (i); tsi_next (&i))
+ WALK_SUBTREE (*tsi_stmt_ptr (i));
+ }
+ break;
- case TREE_VEC:
+ case OMP_CLAUSE:
+ switch (OMP_CLAUSE_CODE (*tp))
+ {
+ case OMP_CLAUSE_PRIVATE:
+ case OMP_CLAUSE_SHARED:
+ case OMP_CLAUSE_FIRSTPRIVATE:
+ case OMP_CLAUSE_LASTPRIVATE:
+ case OMP_CLAUSE_COPYIN:
+ case OMP_CLAUSE_COPYPRIVATE:
+ case OMP_CLAUSE_IF:
+ case OMP_CLAUSE_NUM_THREADS:
+ case OMP_CLAUSE_SCHEDULE:
+ WALK_SUBTREE (OMP_CLAUSE_OPERAND (*tp, 0));
+ /* FALLTHRU */
+
+ case OMP_CLAUSE_NOWAIT:
+ case OMP_CLAUSE_ORDERED:
+ case OMP_CLAUSE_DEFAULT:
+ WALK_SUBTREE_TAIL (OMP_CLAUSE_CHAIN (*tp));
+
+ case OMP_CLAUSE_REDUCTION:
{
- int len = TREE_VEC_LENGTH (*tp);
+ int i;
+ for (i = 0; i < 4; i++)
+ WALK_SUBTREE (OMP_CLAUSE_OPERAND (*tp, i));
+ WALK_SUBTREE_TAIL (OMP_CLAUSE_CHAIN (*tp));
+ }
- if (len == 0)
- break;
+ default:
+ gcc_unreachable ();
+ }
+ break;
- /* Walk all elements but the first. */
- while (--len)
- WALK_SUBTREE (TREE_VEC_ELT (*tp, len));
+ case TARGET_EXPR:
+ {
+ int i, len;
+
+ /* TARGET_EXPRs are peculiar: operands 1 and 3 can be the same.
+ But, we only want to walk once. */
+ len = (TREE_OPERAND (*tp, 3) == TREE_OPERAND (*tp, 1)) ? 2 : 3;
+ for (i = 0; i < len; ++i)
+ WALK_SUBTREE (TREE_OPERAND (*tp, i));
+ WALK_SUBTREE_TAIL (TREE_OPERAND (*tp, len));
+ }
- /* Now walk the first one as a tail call. */
- WALK_SUBTREE_TAIL (TREE_VEC_ELT (*tp, 0));
- }
+ case DECL_EXPR:
+ /* If this is a TYPE_DECL, walk into the fields of the type that it's
+ defining. We only want to walk into these fields of a type in this
+ case and not in the general case of a mere reference to the type.
- case COMPLEX_CST:
- WALK_SUBTREE (TREE_REALPART (*tp));
- WALK_SUBTREE_TAIL (TREE_IMAGPART (*tp));
+ The criterion is as follows: if the field can be an expression, it
+ must be walked only here. This should be in keeping with the fields
+ that are directly gimplified in gimplify_type_sizes in order for the
+ mark/copy-if-shared/unmark machinery of the gimplifier to work with
+ variable-sized types.
+
+ Note that DECLs get walked as part of processing the BIND_EXPR. */
+ if (TREE_CODE (DECL_EXPR_DECL (*tp)) == TYPE_DECL)
+ {
+ tree *type_p = &TREE_TYPE (DECL_EXPR_DECL (*tp));
+ if (TREE_CODE (*type_p) == ERROR_MARK)
+ return NULL_TREE;
+
+ /* Call the function for the type. See if it returns anything or
+ doesn't want us to continue. If we are to continue, walk both
+ the normal fields and those for the declaration case. */
+ result = (*func) (type_p, &walk_subtrees, data);
+ if (result || !walk_subtrees)
+ return result;
- case CONSTRUCTOR:
- {
- unsigned HOST_WIDE_INT idx;
- constructor_elt *ce;
+ result = walk_type_fields (*type_p, func, data, pset, lh);
+ if (result)
+ return result;
- for (idx = 0;
- VEC_iterate(constructor_elt, CONSTRUCTOR_ELTS (*tp), idx, ce);
- idx++)
- WALK_SUBTREE (ce->value);
- }
- break;
+ /* If this is a record type, also walk the fields. */
+ if (TREE_CODE (*type_p) == RECORD_TYPE
+ || TREE_CODE (*type_p) == UNION_TYPE
+ || TREE_CODE (*type_p) == QUAL_UNION_TYPE)
+ {
+ tree field;
- case SAVE_EXPR:
- WALK_SUBTREE_TAIL (TREE_OPERAND (*tp, 0));
+ for (field = TYPE_FIELDS (*type_p); field;
+ field = TREE_CHAIN (field))
+ {
+ /* We'd like to look at the type of the field, but we can
+ easily get infinite recursion. So assume it's pointed
+ to elsewhere in the tree. Also, ignore things that
+ aren't fields. */
+ if (TREE_CODE (field) != FIELD_DECL)
+ continue;
+
+ WALK_SUBTREE (DECL_FIELD_OFFSET (field));
+ WALK_SUBTREE (DECL_SIZE (field));
+ WALK_SUBTREE (DECL_SIZE_UNIT (field));
+ if (TREE_CODE (*type_p) == QUAL_UNION_TYPE)
+ WALK_SUBTREE (DECL_QUALIFIER (field));
+ }
+ }
- case BIND_EXPR:
- {
- tree decl;
- for (decl = BIND_EXPR_VARS (*tp); decl; decl = TREE_CHAIN (decl))
- {
- /* Walk the DECL_INITIAL and DECL_SIZE. We don't want to walk
- into declarations that are just mentioned, rather than
- declared; they don't really belong to this part of the tree.
- And, we can see cycles: the initializer for a declaration
- can refer to the declaration itself. */
- WALK_SUBTREE (DECL_INITIAL (decl));
- WALK_SUBTREE (DECL_SIZE (decl));
- WALK_SUBTREE (DECL_SIZE_UNIT (decl));
- }
- WALK_SUBTREE_TAIL (BIND_EXPR_BODY (*tp));
- }
+ /* Same for scalar types. */
+ else if (TREE_CODE (*type_p) == BOOLEAN_TYPE
+ || TREE_CODE (*type_p) == ENUMERAL_TYPE
+ || TREE_CODE (*type_p) == INTEGER_TYPE
+ || TREE_CODE (*type_p) == FIXED_POINT_TYPE
+ || TREE_CODE (*type_p) == REAL_TYPE)
+ {
+ WALK_SUBTREE (TYPE_MIN_VALUE (*type_p));
+ WALK_SUBTREE (TYPE_MAX_VALUE (*type_p));
+ }
- case STATEMENT_LIST:
- {
- tree_stmt_iterator i;
- for (i = tsi_start (*tp); !tsi_end_p (i); tsi_next (&i))
- WALK_SUBTREE (*tsi_stmt_ptr (i));
- }
- break;
+ WALK_SUBTREE (TYPE_SIZE (*type_p));
+ WALK_SUBTREE_TAIL (TYPE_SIZE_UNIT (*type_p));
+ }
+ /* FALLTHRU */
- default:
- /* ??? This could be a language-defined node. We really should make
- a hook for it, but right now just ignore it. */
- break;
+ default:
+ if (IS_EXPR_CODE_CLASS (TREE_CODE_CLASS (code))
+ || IS_GIMPLE_STMT_CODE_CLASS (TREE_CODE_CLASS (code)))
+ {
+ int i, len;
+
+ /* Walk over all the sub-trees of this operand. */
+ len = TREE_OPERAND_LENGTH (*tp);
+
+ /* Go through the subtrees. We need to do this in forward order so
+ that the scope of a FOR_EXPR is handled properly. */
+ if (len)
+ {
+ for (i = 0; i < len - 1; ++i)
+ WALK_SUBTREE (GENERIC_TREE_OPERAND (*tp, i));
+ WALK_SUBTREE_TAIL (GENERIC_TREE_OPERAND (*tp, len - 1));
+ }
}
+ /* If this is a type, walk the needed fields in the type. */
+ else if (TYPE_P (*tp))
+ return walk_type_fields (*tp, func, data, pset, lh);
+ break;
}
/* We didn't find what we were looking for. */
/* Like walk_tree, but does not walk duplicate nodes more than once. */
tree
-walk_tree_without_duplicates (tree *tp, walk_tree_fn func, void *data)
+walk_tree_without_duplicates_1 (tree *tp, walk_tree_fn func, void *data,
+ walk_tree_lh lh)
{
tree result;
struct pointer_set_t *pset;
pset = pointer_set_create ();
- result = walk_tree (tp, func, data, pset);
+ result = walk_tree_1 (tp, func, data, pset, lh);
pointer_set_destroy (pset);
return result;
}
+
+/* Return true if STMT is an empty statement or contains nothing but
+ empty statements. */
+
+bool
+empty_body_p (tree stmt)
+{
+ tree_stmt_iterator i;
+ tree body;
+
+ if (IS_EMPTY_STMT (stmt))
+ return true;
+ else if (TREE_CODE (stmt) == BIND_EXPR)
+ body = BIND_EXPR_BODY (stmt);
+ else if (TREE_CODE (stmt) == STATEMENT_LIST)
+ body = stmt;
+ else
+ return false;
+
+ for (i = tsi_start (body); !tsi_end_p (i); tsi_next (&i))
+ if (!empty_body_p (tsi_stmt (i)))
+ return false;
+
+ return true;
+}
+
+tree *
+tree_block (tree t)
+{
+ char const c = TREE_CODE_CLASS (TREE_CODE (t));
+
+ if (IS_EXPR_CODE_CLASS (c))
+ return &t->exp.block;
+ else if (IS_GIMPLE_STMT_CODE_CLASS (c))
+ return &GIMPLE_STMT_BLOCK (t);
+ gcc_unreachable ();
+ return NULL;
+}
+
+tree *
+generic_tree_operand (tree node, int i)
+{
+ if (GIMPLE_STMT_P (node))
+ return &GIMPLE_STMT_OPERAND (node, i);
+ return &TREE_OPERAND (node, i);
+}
+
+tree *
+generic_tree_type (tree node)
+{
+ if (GIMPLE_STMT_P (node))
+ return &void_type_node;
+ return &TREE_TYPE (node);
+}
+
+/* Build and return a TREE_LIST of arguments in the CALL_EXPR exp.
+ FIXME: don't use this function. It exists for compatibility with
+ the old representation of CALL_EXPRs where a list was used to hold the
+ arguments. Places that currently extract the arglist from a CALL_EXPR
+ ought to be rewritten to use the CALL_EXPR itself. */
+tree
+call_expr_arglist (tree exp)
+{
+ tree arglist = NULL_TREE;
+ int i;
+ for (i = call_expr_nargs (exp) - 1; i >= 0; i--)
+ arglist = tree_cons (NULL_TREE, CALL_EXPR_ARG (exp, i), arglist);
+ return arglist;
+}
+
+/* Return true if TYPE has a variable argument list. */
+
+bool
+stdarg_p (tree fntype)
+{
+ function_args_iterator args_iter;
+ tree n = NULL_TREE, t;
+
+ if (!fntype)
+ return false;
+
+ FOREACH_FUNCTION_ARGS(fntype, t, args_iter)
+ {
+ n = t;
+ }
+
+ return n != NULL_TREE && n != void_type_node;
+}
+
+/* Return true if TYPE has a prototype. */
+
+bool
+prototype_p (tree fntype)
+{
+ tree t;
+
+ gcc_assert (fntype != NULL_TREE);
+
+ t = TYPE_ARG_TYPES (fntype);
+ return (t != NULL_TREE);
+}
+
+/* Return the number of arguments that a function has. */
+
+int
+function_args_count (tree fntype)
+{
+ function_args_iterator args_iter;
+ tree t;
+ int num = 0;
+
+ if (fntype)
+ {
+ FOREACH_FUNCTION_ARGS(fntype, t, args_iter)
+ {
+ num++;
+ }
+ }
+
+ return num;
+}
+
+/* If BLOCK is inlined from an __attribute__((__artificial__))
+ routine, return pointer to location from where it has been
+ called. */
+location_t *
+block_nonartificial_location (tree block)
+{
+ location_t *ret = NULL;
+
+ while (block && TREE_CODE (block) == BLOCK
+ && BLOCK_ABSTRACT_ORIGIN (block))
+ {
+ tree ao = BLOCK_ABSTRACT_ORIGIN (block);
+
+ while (TREE_CODE (ao) == BLOCK && BLOCK_ABSTRACT_ORIGIN (ao))
+ ao = BLOCK_ABSTRACT_ORIGIN (ao);
+
+ if (TREE_CODE (ao) == FUNCTION_DECL)
+ {
+ /* If AO is an artificial inline, point RET to the
+ call site locus at which it has been inlined and continue
+ the loop, in case AO's caller is also an artificial
+ inline. */
+ if (DECL_DECLARED_INLINE_P (ao)
+ && lookup_attribute ("artificial", DECL_ATTRIBUTES (ao)))
+ ret = &BLOCK_SOURCE_LOCATION (block);
+ else
+ break;
+ }
+ else if (TREE_CODE (ao) != BLOCK)
+ break;
+
+ block = BLOCK_SUPERCONTEXT (block);
+ }
+ return ret;
+}
+
#include "gt-tree.h"
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