/* SSA operand management for trees.
- Copyright (C) 2003, 2005 Free Software Foundation, Inc.
+ Copyright (C) 2003, 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, 59 Temple Place - Suite 330, Boston, MA
-02111-1307, USA. */
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
#ifndef GCC_TREE_SSA_OPERANDS_H
#define GCC_TREE_SSA_OPERANDS_H
};
typedef struct use_optype_d *use_optype_p;
-/* This represents the MAY_DEFS for a stmt. */
-struct maydef_optype_d
+typedef struct vuse_element_d
{
- struct maydef_optype_d *next;
- tree def_var;
tree use_var;
struct ssa_use_operand_d use_ptr;
-};
-typedef struct maydef_optype_d *maydef_optype_p;
+} vuse_element_t;
-/* This represents the VUSEs for a stmt. */
-struct vuse_optype_d
+typedef struct vuse_vec_d
{
- struct vuse_optype_d *next;
- tree use_var;
- struct ssa_use_operand_d use_ptr;
-};
-typedef struct vuse_optype_d *vuse_optype_p;
-
-/* This represents the V_MUST_DEFS for a stmt. */
-struct mustdef_optype_d
+ unsigned int num_vuse;
+ vuse_element_t uses[1];
+} vuse_vec_t;
+typedef struct vuse_vec_d *vuse_vec_p;
+
+#define VUSE_VECT_NUM_ELEM(V) (V).num_vuse
+#define VUSE_VECT_ELEMENT_NC(V,X) (V).uses[(X)]
+#define VUSE_ELEMENT_PTR_NC(V,X) (&(VUSE_VECT_ELEMENT_NC ((V),(X)).use_ptr))
+#define VUSE_ELEMENT_VAR_NC(V,X) (VUSE_VECT_ELEMENT_NC ((V),(X)).use_var)
+
+#ifdef ENABLE_CHECKING
+#define VUSE_VECT_ELEMENT(V,X) \
+ (gcc_assert (((unsigned int) (X)) < VUSE_VECT_NUM_ELEM (V)), \
+ VUSE_VECT_ELEMENT_NC (V,X))
+
+#define VUSE_ELEMENT_PTR(V,X) \
+ (gcc_assert (((unsigned int) (X)) < VUSE_VECT_NUM_ELEM (V)), \
+ VUSE_ELEMENT_PTR_NC (V, X))
+
+#define SET_VUSE_VECT_ELEMENT(V,X,N) \
+ (gcc_assert (((unsigned int) (X)) < VUSE_VECT_NUM_ELEM (V)), \
+ VUSE_VECT_ELEMENT_NC (V,X) = (N))
+
+#define SET_VUSE_ELEMENT_VAR(V,X,N) \
+ (gcc_assert (((unsigned int) (X)) < VUSE_VECT_NUM_ELEM (V)), \
+ VUSE_VECT_ELEMENT_NC ((V),(X)).use_var = (N))
+
+#define SET_VUSE_ELEMENT_PTR(V,X,N) \
+ (gcc_assert (((unsigned int) (X)) < VUSE_VECT_NUM_ELEM (V)), \
+ VUSE_ELEMENT_PTR_NC (V, X) = (N))
+#else
+#define VUSE_VECT_ELEMENT(V,X) VUSE_VECT_ELEMENT_NC(V,X)
+#define VUSE_ELEMENT_PTR(V,X) VUSE_ELEMENT_PTR_NC(V,X)
+#define SET_VUSE_VECT_ELEMENT(V,X,N) VUSE_VECT_ELEMENT_NC(V,X) = (N)
+#define SET_VUSE_ELEMENT_PTR(V,X,N) VUSE_ELEMENT_PTR_NC(V,X) = (N)
+#define SET_VUSE_ELEMENT_VAR(V,X,N) VUSE_VECT_ELEMENT_NC ((V),(X)).use_var = (N)
+#endif
+
+#define VUSE_ELEMENT_VAR(V,X) (VUSE_VECT_ELEMENT ((V),(X)).use_var)
+
+/* This represents the virtual ops of a stmt. */
+struct voptype_d
{
- struct mustdef_optype_d *next;
+ struct voptype_d *next;
tree def_var;
- tree kill_var;
- struct ssa_use_operand_d use_ptr;
+ vuse_vec_t usev;
};
-typedef struct mustdef_optype_d *mustdef_optype_p;
+typedef struct voptype_d *voptype_p;
-
-#define SSA_OPERAND_MEMORY_SIZE (2048 - sizeof (void *))
-
+/* This structure represents a variable sized buffer which is allocated by the
+ operand memory manager. Operands are suballocated out of this block. The
+ MEM array varies in size. */
+
struct ssa_operand_memory_d GTY((chain_next("%h.next")))
{
struct ssa_operand_memory_d *next;
- char mem[SSA_OPERAND_MEMORY_SIZE];
+ char mem[1];
};
+/* Number of different size free buckets for virtual operands. */
+#define NUM_VOP_FREE_BUCKETS 29
+
+/* Per-function operand caches. */
+struct ssa_operands GTY(()) {
+ struct ssa_operand_memory_d *operand_memory;
+ unsigned operand_memory_index;
+ /* Current size of the operand memory buffer. */
+ unsigned int ssa_operand_mem_size;
+
+ bool ops_active;
+
+ struct def_optype_d * GTY ((skip (""))) free_defs;
+ struct use_optype_d * GTY ((skip (""))) free_uses;
+ struct voptype_d * GTY ((skip (""))) vop_free_buckets[NUM_VOP_FREE_BUCKETS];
+ VEC(tree,heap) * GTY ((skip (""))) mpt_table;
+};
/* This represents the operand cache for a stmt. */
struct stmt_operands_d
struct def_optype_d * def_ops;
struct use_optype_d * use_ops;
- /* Virtual operands (V_MAY_DEF, VUSE, and V_MUST_DEF). */
- struct maydef_optype_d * maydef_ops;
- struct vuse_optype_d * vuse_ops;
- struct mustdef_optype_d * mustdef_ops;
+ /* Virtual operands (VDEF, VUSE). */
+ struct voptype_d * vdef_ops;
+ struct voptype_d * vuse_ops;
+
+ /* Sets of memory symbols loaded and stored. */
+ bitmap stores;
+ bitmap loads;
};
typedef struct stmt_operands_d *stmt_operands_p;
#define DEF_OPS(STMT) (stmt_ann (STMT)->operands.def_ops)
#define USE_OPS(STMT) (stmt_ann (STMT)->operands.use_ops)
#define VUSE_OPS(STMT) (stmt_ann (STMT)->operands.vuse_ops)
-#define MAYDEF_OPS(STMT) (stmt_ann (STMT)->operands.maydef_ops)
-#define MUSTDEF_OPS(STMT) (stmt_ann (STMT)->operands.mustdef_ops)
+#define VDEF_OPS(STMT) (stmt_ann (STMT)->operands.vdef_ops)
+
+#define LOADED_SYMS(STMT) (stmt_ann (STMT)->operands.loads)
+#define STORED_SYMS(STMT) (stmt_ann (STMT)->operands.stores)
#define USE_OP_PTR(OP) (&((OP)->use_ptr))
#define USE_OP(OP) (USE_FROM_PTR (USE_OP_PTR (OP)))
#define DEF_OP_PTR(OP) ((OP)->def_ptr)
#define DEF_OP(OP) (DEF_FROM_PTR (DEF_OP_PTR (OP)))
-#define VUSE_OP_PTR(OP) USE_OP_PTR(OP)
-#define VUSE_OP(OP) ((OP)->use_var)
+#define VUSE_OP_PTR(OP,X) VUSE_ELEMENT_PTR ((OP)->usev, (X))
+#define VUSE_OP(OP,X) VUSE_ELEMENT_VAR ((OP)->usev, (X))
+#define SET_VUSE_OP(OP,X,N) SET_VUSE_ELEMENT_VAR ((OP)->usev, (X), (N))
+#define VUSE_NUM(OP) VUSE_VECT_NUM_ELEM ((OP)->usev)
+#define VUSE_VECT(OP) &((OP)->usev)
-#define MAYDEF_RESULT_PTR(OP) (&((OP)->def_var))
-#define MAYDEF_RESULT(OP) ((OP)->def_var)
-#define MAYDEF_OP_PTR(OP) USE_OP_PTR (OP)
-#define MAYDEF_OP(OP) ((OP)->use_var)
-
-#define MUSTDEF_RESULT_PTR(OP) (&((OP)->def_var))
-#define MUSTDEF_RESULT(OP) ((OP)->def_var)
-#define MUSTDEF_KILL_PTR(OP) USE_OP_PTR (OP)
-#define MUSTDEF_KILL(OP) ((OP)->kill_var)
+#define VDEF_RESULT_PTR(OP) (&((OP)->def_var))
+#define VDEF_RESULT(OP) ((OP)->def_var)
+#define VDEF_OP_PTR(OP,X) VUSE_OP_PTR (OP, X)
+#define VDEF_OP(OP,X) VUSE_OP (OP, X)
+#define SET_VDEF_OP(OP,X,N) SET_VUSE_OP (OP, X, N)
+#define VDEF_NUM(OP) VUSE_VECT_NUM_ELEM ((OP)->usev)
+#define VDEF_VECT(OP) &((OP)->usev)
#define PHI_RESULT_PTR(PHI) get_phi_result_ptr (PHI)
#define PHI_RESULT(PHI) DEF_FROM_PTR (PHI_RESULT_PTR (PHI))
extern void init_ssa_operands (void);
extern void fini_ssa_operands (void);
+extern void free_ssa_operands (stmt_operands_p);
extern void update_stmt_operands (tree);
+extern void free_stmt_operands (tree);
extern bool verify_imm_links (FILE *f, tree var);
extern void copy_virtual_operands (tree, tree);
-extern void create_ssa_artficial_load_stmt (tree, tree);
+extern int operand_build_cmp (const void *, const void *);
+extern void create_ssa_artificial_load_stmt (tree, tree, bool);
extern void dump_immediate_uses (FILE *file);
extern void dump_immediate_uses_for (FILE *file, tree var);
extern void debug_immediate_uses (void);
extern void debug_immediate_uses_for (tree var);
-
-extern bool ssa_call_clobbered_cache_valid;
-extern bool ssa_ro_call_cache_valid;
+extern void dump_decl_set (FILE *, bitmap);
+extern void debug_decl_set (bitmap);
extern bool ssa_operands_active (void);
+extern void add_to_addressable_set (tree, bitmap *);
+extern void push_stmt_changes (tree *);
+extern void pop_stmt_changes (tree *);
+extern void discard_stmt_changes (tree *);
+
enum ssa_op_iter_type {
ssa_op_iter_none = 0,
ssa_op_iter_tree,
ssa_op_iter_use,
ssa_op_iter_def,
- ssa_op_iter_maymustdef
+ ssa_op_iter_vdef
};
+
/* This structure is used in the operand iterator loops. It contains the
items required to determine which operand is retrieved next. During
optimization, this structure is scalarized, and any unused fields are
{
def_optype_p defs;
use_optype_p uses;
- vuse_optype_p vuses;
- maydef_optype_p maydefs;
- maydef_optype_p mayuses;
- mustdef_optype_p mustdefs;
- mustdef_optype_p mustkills;
+ voptype_p vuses;
+ voptype_p vdefs;
+ voptype_p mayuses;
enum ssa_op_iter_type iter_type;
int phi_i;
int num_phi;
tree phi_stmt;
bool done;
+ unsigned int vuse_index;
+ unsigned int mayuse_index;
} ssa_op_iter;
/* These flags are used to determine which operands are returned during
#define SSA_OP_USE 0x01 /* Real USE operands. */
#define SSA_OP_DEF 0x02 /* Real DEF operands. */
#define SSA_OP_VUSE 0x04 /* VUSE operands. */
-#define SSA_OP_VMAYUSE 0x08 /* USE portion of V_MAY_DEFS. */
-#define SSA_OP_VMAYDEF 0x10 /* DEF portion of V_MAY_DEFS. */
-#define SSA_OP_VMUSTDEF 0x20 /* V_MUST_DEF definitions. */
-#define SSA_OP_VMUSTKILL 0x40 /* V_MUST_DEF kills. */
+#define SSA_OP_VMAYUSE 0x08 /* USE portion of VDEFS. */
+#define SSA_OP_VDEF 0x10 /* DEF portion of VDEFS. */
/* These are commonly grouped operand flags. */
#define SSA_OP_VIRTUAL_USES (SSA_OP_VUSE | SSA_OP_VMAYUSE)
-#define SSA_OP_VIRTUAL_DEFS (SSA_OP_VMAYDEF | SSA_OP_VMUSTDEF)
-#define SSA_OP_VIRTUAL_KILLS (SSA_OP_VMUSTKILL)
-#define SSA_OP_ALL_VIRTUALS (SSA_OP_VIRTUAL_USES | SSA_OP_VIRTUAL_KILLS \
- | SSA_OP_VIRTUAL_DEFS)
+#define SSA_OP_VIRTUAL_DEFS (SSA_OP_VDEF)
+#define SSA_OP_ALL_VIRTUALS (SSA_OP_VIRTUAL_USES | SSA_OP_VIRTUAL_DEFS)
#define SSA_OP_ALL_USES (SSA_OP_VIRTUAL_USES | SSA_OP_USE)
#define SSA_OP_ALL_DEFS (SSA_OP_VIRTUAL_DEFS | SSA_OP_DEF)
-#define SSA_OP_ALL_KILLS (SSA_OP_VIRTUAL_KILLS)
-#define SSA_OP_ALL_OPERANDS (SSA_OP_ALL_USES | SSA_OP_ALL_DEFS \
- | SSA_OP_ALL_KILLS)
+#define SSA_OP_ALL_OPERANDS (SSA_OP_ALL_USES | SSA_OP_ALL_DEFS)
/* This macro executes a loop over the operands of STMT specified in FLAG,
returning each operand as a 'tree' in the variable TREEVAR. ITER is an
!op_iter_done (&(ITER)); \
DEFVAR = op_iter_next_def (&(ITER)))
-/* This macro executes a loop over the V_MAY_DEF operands of STMT. The def
- and use for each V_MAY_DEF is returned in DEFVAR and USEVAR.
+/* This macro executes a loop over the VDEF operands of STMT. The def
+ and use vector for each VDEF is returned in DEFVAR and USEVECT.
ITER is an ssa_op_iter structure used to control the loop. */
-#define FOR_EACH_SSA_MAYDEF_OPERAND(DEFVAR, USEVAR, STMT, ITER) \
- for (op_iter_init_maydef (&(ITER), STMT, &(USEVAR), &(DEFVAR)); \
+#define FOR_EACH_SSA_VDEF_OPERAND(DEFVAR, USEVECT, STMT, ITER) \
+ for (op_iter_init_vdef (&(ITER), STMT, &(USEVECT), &(DEFVAR)); \
!op_iter_done (&(ITER)); \
- op_iter_next_maymustdef (&(USEVAR), &(DEFVAR), &(ITER)))
-
-/* This macro executes a loop over the V_MUST_DEF operands of STMT. The def
- and kill for each V_MUST_DEF is returned in DEFVAR and KILLVAR.
- ITER is an ssa_op_iter structure used to control the loop. */
-#define FOR_EACH_SSA_MUSTDEF_OPERAND(DEFVAR, KILLVAR, STMT, ITER) \
- for (op_iter_init_mustdef (&(ITER), STMT, &(KILLVAR), &(DEFVAR)); \
- !op_iter_done (&(ITER)); \
- op_iter_next_maymustdef (&(KILLVAR), &(DEFVAR), &(ITER)))
-
-/* This macro executes a loop over the V_{MUST,MAY}_DEF of STMT. The def
- and kill for each V_{MUST,MAY}_DEF is returned in DEFVAR and KILLVAR.
- ITER is an ssa_op_iter structure used to control the loop. */
-#define FOR_EACH_SSA_MUST_AND_MAY_DEF_OPERAND(DEFVAR, KILLVAR, STMT, ITER)\
- for (op_iter_init_must_and_may_def (&(ITER), STMT, &(KILLVAR), &(DEFVAR));\
- !op_iter_done (&(ITER)); \
- op_iter_next_maymustdef (&(KILLVAR), &(DEFVAR), &(ITER)))
+ op_iter_next_vdef (&(USEVECT), &(DEFVAR), &(ITER)))
/* This macro will execute a loop over all the arguments of a PHI which
match FLAGS. A use_operand_p is always returned via USEVAR. FLAGS
can be either SSA_OP_USE or SSA_OP_VIRTUAL_USES or SSA_OP_ALL_USES. */
-#define FOR_EACH_PHI_ARG (USEVAR, STMT, ITER, FLAGS) \
+#define FOR_EACH_PHI_ARG(USEVAR, STMT, ITER, FLAGS) \
for ((USEVAR) = op_iter_init_phiuse (&(ITER), STMT, FLAGS); \
!op_iter_done (&(ITER)); \
(USEVAR) = op_iter_next_use (&(ITER)))
FLAGS, then NULL_DEF_OPERAND_P is returned. */
#define SINGLE_SSA_DEF_OPERAND(STMT, FLAGS) \
single_ssa_def_operand (STMT, FLAGS)
- /* This macro returns TRUE if there are no operands matching FLAGS in STMT. */
+
+/* This macro returns TRUE if there are no operands matching FLAGS in STMT. */
#define ZERO_SSA_OPERANDS(STMT, FLAGS) zero_ssa_operands (STMT, FLAGS)
/* This macro counts the number of operands in STMT matching FLAGS. */
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