+2011-04-27 Richard Guenther <rguenther@suse.de>
+
+ * Makefile.in (tree-ssa-structalias.o): Remove
+ gt-tree-ssa-structalias.h dependency.
+ (GTFILES): Remove tree-ssa-structalias.c.
+ * tree.c (allocate_decl_uid): New function.
+ (make_node_stat): Use it.
+ (copy_node_stat): Likewise.
+ * tree.h (allocate_decl_uid): Declare.
+ * tree-ssa-alias.h (delete_alias_heapvars): Remove.
+ * tree-ssa.c (delete_tree_ssa): Do not call delete_alias_heapvars.
+ * tree-flow.h (struct var_ann_d): Remove is_heapvar flag.
+ * tree-ssa-live.c (remove_unused_locals): Do not check is_heapvar
+ flag.
+ * tree-ssa-structalias.c (heapvar_for_stmt): Remove.
+ (struct heapvar_map): Likewise.
+ (heapvar_map_eq, heapvar_map_hash, heapvar_lookup,
+ heapvar_insert): Likewise.
+ (make_heapvar_for): Rename to ...
+ (make_heapvar): ... this. Simplify.
+ (fake_var_decl_obstack): New global var.
+ (build_fake_var_decl): New function.
+ (make_constraint_from_heapvar): Adjust.
+ (handle_lhs_call): Likewise.
+ (create_function_info_for): Likewise.
+ (intra_create_variable_infos): Likewise.
+ (init_alias_vars): Allocate fake_var_decl_obstack.
+ (init_alias_heapvars, delete_alias_heapvars): Remove.
+ (compute_points_to_sets): Do not call init_alias_heapvars.
+ (ipa_pta_execute): Likewise.
+ (delete_points_to_sets): Free fake_var_decl_obstack.
+
2011-04-27 Ulrich Weigand <Ulrich.Weigand@de.ibm.com>
* config/spu/divmovti4.c (union qword_UTItype): New data type.
keep the set of called functions for indirect calls.
And probably more. */
-static GTY ((if_marked ("tree_map_marked_p"), param_is (struct heapvar_map)))
-htab_t heapvar_for_stmt;
static bool use_field_sensitive = true;
static int in_ipa_mode = 0;
escaped_id = 3, nonlocal_id = 4,
storedanything_id = 5, integer_id = 6 };
-struct GTY(()) heapvar_map {
- struct tree_map map;
- unsigned HOST_WIDE_INT offset;
-};
-
-static int
-heapvar_map_eq (const void *p1, const void *p2)
-{
- const struct heapvar_map *h1 = (const struct heapvar_map *)p1;
- const struct heapvar_map *h2 = (const struct heapvar_map *)p2;
- return (h1->map.base.from == h2->map.base.from
- && h1->offset == h2->offset);
-}
-
-static unsigned int
-heapvar_map_hash (struct heapvar_map *h)
-{
- return iterative_hash_host_wide_int (h->offset,
- htab_hash_pointer (h->map.base.from));
-}
-
-/* Lookup a heap var for FROM, and return it if we find one. */
-
-static tree
-heapvar_lookup (tree from, unsigned HOST_WIDE_INT offset)
-{
- struct heapvar_map *h, in;
- in.map.base.from = from;
- in.offset = offset;
- h = (struct heapvar_map *) htab_find_with_hash (heapvar_for_stmt, &in,
- heapvar_map_hash (&in));
- if (h)
- return h->map.to;
- return NULL_TREE;
-}
-
-/* Insert a mapping FROM->TO in the heap var for statement
- hashtable. */
-
-static void
-heapvar_insert (tree from, unsigned HOST_WIDE_INT offset, tree to)
-{
- struct heapvar_map *h;
- void **loc;
-
- h = ggc_alloc_heapvar_map ();
- h->map.base.from = from;
- h->offset = offset;
- h->map.hash = heapvar_map_hash (h);
- h->map.to = to;
- loc = htab_find_slot_with_hash (heapvar_for_stmt, h, h->map.hash, INSERT);
- gcc_assert (*loc == NULL);
- *(struct heapvar_map **) loc = h;
-}
-
/* Return a new variable info structure consisting for a variable
named NAME, and using constraint graph node NODE. Append it
to the vector of variable info structures. */
process_constraint (new_constraint (lhs, rhs));
}
+/* Temporary storage for fake var decls. */
+struct obstack fake_var_decl_obstack;
+
+/* Build a fake VAR_DECL acting as referrer to a DECL_UID. */
+
+static tree
+build_fake_var_decl (tree type)
+{
+ tree decl = (tree) XOBNEW (&fake_var_decl_obstack, struct tree_var_decl);
+ memset (decl, 0, sizeof (struct tree_var_decl));
+ TREE_SET_CODE (decl, VAR_DECL);
+ TREE_TYPE (decl) = type;
+ DECL_UID (decl) = allocate_decl_uid ();
+ SET_DECL_PT_UID (decl, -1);
+ layout_decl (decl, 0);
+ return decl;
+}
+
/* Create a new artificial heap variable with NAME.
Return the created variable. */
static varinfo_t
-make_heapvar_for (varinfo_t lhs, const char *name)
+make_heapvar (const char *name)
{
varinfo_t vi;
- tree heapvar = heapvar_lookup (lhs->decl, lhs->offset);
-
- if (heapvar == NULL_TREE)
- {
- var_ann_t ann;
- heapvar = create_tmp_var_raw (ptr_type_node, name);
- DECL_EXTERNAL (heapvar) = 1;
-
- heapvar_insert (lhs->decl, lhs->offset, heapvar);
-
- ann = get_var_ann (heapvar);
- ann->is_heapvar = 1;
- }
-
- /* For global vars we need to add a heapvar to the list of referenced
- vars of a different function than it was created for originally. */
- if (cfun && gimple_referenced_vars (cfun))
- add_referenced_var (heapvar);
+ tree heapvar;
+
+ heapvar = build_fake_var_decl (ptr_type_node);
+ DECL_EXTERNAL (heapvar) = 1;
vi = new_var_info (heapvar, name);
vi->is_artificial_var = true;
static varinfo_t
make_constraint_from_heapvar (varinfo_t lhs, const char *name)
{
- varinfo_t vi = make_heapvar_for (lhs, name);
+ varinfo_t vi = make_heapvar (name);
make_constraint_from (lhs, vi->id);
return vi;
varinfo_t vi;
struct constraint_expr tmpc;
rhsc = NULL;
- vi = make_heapvar_for (get_vi_for_tree (lhs), "HEAP");
+ vi = make_heapvar ("HEAP");
/* We delay marking allocated storage global until we know if
it escapes. */
DECL_EXTERNAL (vi->decl) = 0;
free (tempname);
/* We need sth that can be pointed to for va_start. */
- decl = create_tmp_var_raw (ptr_type_node, name);
- get_var_ann (decl);
+ decl = build_fake_var_decl (ptr_type_node);
argvi = new_var_info (decl, newname);
argvi->offset = fi_parm_base + num_args;
{
struct constraint_expr lhsc, rhsc;
varinfo_t vi;
- tree heapvar = heapvar_lookup (t, 0);
- if (heapvar == NULL_TREE)
- {
- var_ann_t ann;
- heapvar = create_tmp_var_raw (TREE_TYPE (TREE_TYPE (t)),
- "PARM_NOALIAS");
- DECL_EXTERNAL (heapvar) = 1;
- heapvar_insert (t, 0, heapvar);
- ann = get_var_ann (heapvar);
- ann->is_heapvar = 1;
- }
- if (gimple_referenced_vars (cfun))
- add_referenced_var (heapvar);
+ tree heapvar = build_fake_var_decl (TREE_TYPE (TREE_TYPE (t)));
+ DECL_EXTERNAL (heapvar) = 1;
+ vi = get_varinfo (create_variable_info_for (heapvar, "PARM_NOALIAS"));
lhsc.var = get_vi_for_tree (t)->id;
lhsc.type = SCALAR;
lhsc.offset = 0;
- rhsc.var = (vi = get_vi_for_tree (heapvar))->id;
+ rhsc.var = vi->id;
rhsc.type = ADDRESSOF;
rhsc.offset = 0;
process_constraint (new_constraint (lhsc, rhsc));
shared_bitmap_table = htab_create (511, shared_bitmap_hash,
shared_bitmap_eq, free);
init_base_vars ();
+
+ gcc_obstack_init (&fake_var_decl_obstack);
}
/* Remove the REF and ADDRESS edges from GRAPH, as well as all the
bitmap_obstack_release (&predbitmap_obstack);
}
-/* Initialize the heapvar for statement mapping. */
-
-static void
-init_alias_heapvars (void)
-{
- if (!heapvar_for_stmt)
- heapvar_for_stmt = htab_create_ggc (11, tree_map_hash, heapvar_map_eq,
- NULL);
-}
-
-/* Delete the heapvar for statement mapping. */
-
-void
-delete_alias_heapvars (void)
-{
- if (heapvar_for_stmt)
- htab_delete (heapvar_for_stmt);
- heapvar_for_stmt = NULL;
-}
-
/* Solve the constraint set. */
static void
timevar_push (TV_TREE_PTA);
init_alias_vars ();
- init_alias_heapvars ();
intra_create_variable_infos ();
VEC_free (varinfo_t, heap, varmap);
free_alloc_pool (variable_info_pool);
free_alloc_pool (constraint_pool);
+
+ obstack_free (&fake_var_decl_obstack, NULL);
}
in_ipa_mode = 1;
- init_alias_heapvars ();
init_alias_vars ();
/* Build the constraints. */
TODO_update_ssa /* todo_flags_finish */
}
};
-
-
-#include "gt-tree-ssa-structalias.h"
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