/* Header file for routines that straddle the border between GIMPLE and
SSA in gimple.
- Copyright (C) 2009-2013 Free Software Foundation, Inc.
+ Copyright (C) 2009-2020 Free Software Foundation, Inc.
This file is part of GCC.
#ifndef GCC_GIMPLE_SSA_H
#define GCC_GIMPLE_SSA_H
+#include "tree-ssa-operands.h"
+
/* This structure is used to map a gimple statement to a label,
or list of labels to represent transaction restart. */
-struct GTY(()) tm_restart_node {
- gimple stmt;
+struct GTY((for_user)) tm_restart_node {
+ gimple *stmt;
tree label_or_list;
};
+/* Hasher for tm_restart_node. */
+
+struct tm_restart_hasher : ggc_ptr_hash<tm_restart_node>
+{
+ static hashval_t hash (tm_restart_node *n) { return htab_hash_pointer (n); }
+
+ static bool
+ equal (tm_restart_node *a, tm_restart_node *b)
+ {
+ return a == b;
+ }
+};
+
+extern void gt_ggc_mx (gimple *&);
+extern void gt_pch_nx (gimple *&);
+
+struct ssa_name_hasher : ggc_ptr_hash<tree_node>
+{
+ /* Hash a tree in a uid_decl_map. */
+
+ static hashval_t
+ hash (tree item)
+ {
+ return item->ssa_name.var->decl_minimal.uid;
+ }
+
+ /* Return true if the DECL_UID in both trees are equal. */
+
+ static bool
+ equal (tree a, tree b)
+{
+ return (a->ssa_name.var->decl_minimal.uid == b->ssa_name.var->decl_minimal.uid);
+}
+};
+
/* Gimple dataflow datastructure. All publicly available fields shall have
gimple_ accessor defined, all publicly modifiable fields should have
gimple_set accessor. */
struct GTY(()) gimple_df {
- /* A vector of all the noreturn calls passed to modify_stmt.
- cleanup_control_flow uses it to detect cases where a mid-block
- indirect call has been turned into a noreturn call. When this
- happens, all the instructions after the call are no longer
- reachable and must be deleted as dead. */
- vec<gimple, va_gc> *modified_noreturn_calls;
-
/* Array of all SSA_NAMEs used in the function. */
vec<tree, va_gc> *ssa_names;
/* A map of decls to artificial ssa-names that point to the partition
of the decl. */
- struct pointer_map_t * GTY((skip(""))) decls_to_pointers;
+ hash_map<tree, tree> * GTY((skip(""))) decls_to_pointers;
/* Free list of SSA_NAMEs. */
vec<tree, va_gc> *free_ssanames;
+ /* Queue of SSA_NAMEs to be freed at the next opportunity. */
+ vec<tree, va_gc> *free_ssanames_queue;
+
/* Hashtable holding definition for symbol. If this field is not NULL, it
means that the first reference to this variable in the function is a
USE or a VUSE. In those cases, the SSA renamer creates an SSA name
for this variable with an empty defining statement. */
- htab_t GTY((param_is (union tree_node))) default_defs;
+ hash_table<ssa_name_hasher> *default_defs;
/* True if there are any symbols that need to be renamed. */
unsigned int ssa_renaming_needed : 1;
/* Map gimple stmt to tree label (or list of labels) for transaction
restart and abort. */
- htab_t GTY ((param_is (struct tm_restart_node))) tm_restart;
+ hash_table<tm_restart_hasher> *tm_restart;
};
return fun && fun->gimple_df && fun->gimple_df->in_ssa_p;
}
-/* Inline functions for manipulating various data structures defined in
- tree-flow.h. See tree-flow.h for documentation. */
-
/* Artificial variable used for the virtual operand FUD chain. */
static inline tree
gimple_vop (const struct function *fun)
/* Return the set of VUSE operand for statement G. */
static inline use_operand_p
-gimple_vuse_op (const_gimple g)
+gimple_vuse_op (const gimple *g)
{
struct use_optype_d *ops;
- if (!gimple_has_mem_ops (g))
+ const gimple_statement_with_memory_ops *mem_ops_stmt =
+ dyn_cast <const gimple_statement_with_memory_ops *> (g);
+ if (!mem_ops_stmt)
return NULL_USE_OPERAND_P;
- ops = g->gsops.opbase.use_ops;
+ ops = mem_ops_stmt->use_ops;
if (ops
- && USE_OP_PTR (ops)->use == &g->gsmembase.vuse)
+ && USE_OP_PTR (ops)->use == &mem_ops_stmt->vuse)
return USE_OP_PTR (ops);
return NULL_USE_OPERAND_P;
}
/* Return the set of VDEF operand for statement G. */
static inline def_operand_p
-gimple_vdef_op (gimple g)
+gimple_vdef_op (gimple *g)
{
- if (!gimple_has_mem_ops (g))
+ gimple_statement_with_memory_ops *mem_ops_stmt =
+ dyn_cast <gimple_statement_with_memory_ops *> (g);
+ if (!mem_ops_stmt)
return NULL_DEF_OPERAND_P;
- if (g->gsmembase.vdef)
- return &g->gsmembase.vdef;
+ if (mem_ops_stmt->vdef)
+ return &mem_ops_stmt->vdef;
return NULL_DEF_OPERAND_P;
}
/* Mark statement S as modified, and update it. */
static inline void
-update_stmt (gimple s)
+update_stmt (gimple *s)
{
if (gimple_has_ops (s))
{
gimple_set_modified (s, true);
- update_stmt_operands (s);
+ update_stmt_operands (cfun, s);
}
}
/* Update statement S if it has been optimized. */
static inline void
-update_stmt_if_modified (gimple s)
+update_stmt_if_modified (gimple *s)
{
if (gimple_modified_p (s))
- update_stmt_operands (s);
+ update_stmt_operands (cfun, s);
+}
+
+/* Mark statement S as modified, and update it. */
+
+static inline void
+update_stmt_fn (struct function *fn, gimple *s)
+{
+ if (gimple_has_ops (s))
+ {
+ gimple_set_modified (s, true);
+ update_stmt_operands (fn, s);
+ }
}
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