X-Git-Url: http://git.sourceforge.jp/view?a=blobdiff_plain;f=gcc%2Ftree-ssa-operands.h;h=ba9793d83460f676f61bda1f29dc5c510b51eecb;hb=ff84f6db4f5156191531c8d5226bd0ccfc12cf2a;hp=625334109dcd2ea67de7b17fc9ec64ff994da942;hpb=f3d9a16cb6215826d71c1b53087d2e4eec38bb56;p=pf3gnuchains%2Fgcc-fork.git diff --git a/gcc/tree-ssa-operands.h b/gcc/tree-ssa-operands.h index 625334109dc..ba9793d8346 100644 --- a/gcc/tree-ssa-operands.h +++ b/gcc/tree-ssa-operands.h @@ -1,11 +1,11 @@ /* SSA operand management for trees. - Copyright (C) 2003 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 @@ -14,9 +14,8 @@ FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 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 +. */ #ifndef GCC_TREE_SSA_OPERANDS_H #define GCC_TREE_SSA_OPERANDS_H @@ -25,119 +24,168 @@ Software Foundation, 59 Temple Place - Suite 330, Boston, MA /* This represents a pointer to a DEF operand. */ -typedef struct def_operand_ptr GTY(()) -{ - tree * GTY((skip(""))) def; -} def_operand_p; +typedef tree *def_operand_p; /* This represents a pointer to a USE operand. */ -typedef struct use_operand_ptr GTY(()) -{ - tree * GTY((skip(""))) use; -} use_operand_p; +typedef ssa_use_operand_t *use_operand_p; +/* NULL operand types. */ +#define NULL_USE_OPERAND_P NULL +#define NULL_DEF_OPERAND_P NULL /* This represents the DEF operands of a stmt. */ -typedef struct def_optype_d GTY(()) +struct def_optype_d { - unsigned num_defs; - struct def_operand_ptr GTY((length("%h.num_defs"))) defs[1]; -} def_optype_t; - -typedef def_optype_t *def_optype; + struct def_optype_d *next; + tree *def_ptr; +}; +typedef struct def_optype_d *def_optype_p; /* This represents the USE operands of a stmt. */ -typedef struct use_optype_d GTY(()) +struct use_optype_d { - unsigned num_uses; - struct use_operand_ptr GTY((length("%h.num_uses"))) uses[1]; -} use_optype_t; - -typedef use_optype_t *use_optype; + struct use_optype_d *next; + struct ssa_use_operand_d use_ptr; +}; +typedef struct use_optype_d *use_optype_p; -/* This represents the MAY_DEFS for a stmt. */ -typedef struct v_may_def_optype_d GTY(()) +typedef struct vuse_element_d { - unsigned num_v_may_defs; - tree GTY((length ("%h.num_v_may_defs * 2"))) v_may_defs[1]; -} v_may_def_optype_t; + tree use_var; + struct ssa_use_operand_d use_ptr; +} vuse_element_t; -typedef v_may_def_optype_t *v_may_def_optype; - -/* This represents the VUSEs for a stmt. */ -typedef struct vuse_optype_d GTY(()) +typedef struct vuse_vec_d { - unsigned num_vuses; - tree GTY((length ("%h.num_vuses"))) vuses[1]; -} vuse_optype_t; - -typedef vuse_optype_t *vuse_optype; - -/* This represents the V_MUST_DEFS for a stmt. */ -typedef struct v_must_def_optype_d GTY(()) + 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 { - unsigned num_v_must_defs; - tree GTY((length("%h.num_v_must_defs"))) v_must_defs[1]; -} v_must_def_optype_t; - -typedef v_must_def_optype_t *v_must_def_optype; - -#define USE_FROM_PTR(OP) get_use_from_ptr (OP) -#define DEF_FROM_PTR(OP) get_def_from_ptr (OP) -#define SET_USE(OP, V) ((*((OP).use)) = (V)) -#define SET_DEF(OP, V) ((*((OP).def)) = (V)) - - -#define USE_OPS(ANN) get_use_ops (ANN) -#define STMT_USE_OPS(STMT) get_use_ops (stmt_ann (STMT)) -#define NUM_USES(OPS) ((OPS) ? (OPS)->num_uses : 0) -#define USE_OP_PTR(OPS, I) get_use_op_ptr ((OPS), (I)) -#define USE_OP(OPS, I) (USE_FROM_PTR (USE_OP_PTR ((OPS), (I)))) -#define SET_USE_OP(OPS, I, V) (SET_USE (USE_OP_PTR ((OPS), (I)), (V))) - - - -#define DEF_OPS(ANN) get_def_ops (ANN) -#define STMT_DEF_OPS(STMT) get_def_ops (stmt_ann (STMT)) -#define NUM_DEFS(OPS) ((OPS) ? (OPS)->num_defs : 0) -#define DEF_OP_PTR(OPS, I) get_def_op_ptr ((OPS), (I)) -#define DEF_OP(OPS, I) (DEF_FROM_PTR (DEF_OP_PTR ((OPS), (I)))) -#define SET_DEF_OP(OPS, I, V) (SET_DEF (DEF_OP_PTR ((OPS), (I)), (V))) - - - -#define V_MAY_DEF_OPS(ANN) get_v_may_def_ops (ANN) -#define STMT_V_MAY_DEF_OPS(STMT) get_v_may_def_ops (stmt_ann(STMT)) -#define NUM_V_MAY_DEFS(OPS) ((OPS) ? (OPS)->num_v_may_defs : 0) -#define V_MAY_DEF_RESULT_PTR(OPS, I) get_v_may_def_result_ptr ((OPS), (I)) -#define V_MAY_DEF_RESULT(OPS, I) \ - (DEF_FROM_PTR (V_MAY_DEF_RESULT_PTR ((OPS), (I)))) -#define SET_V_MAY_DEF_RESULT(OPS, I, V) \ - (SET_DEF (V_MAY_DEF_RESULT_PTR ((OPS), (I)), (V))) -#define V_MAY_DEF_OP_PTR(OPS, I) get_v_may_def_op_ptr ((OPS), (I)) -#define V_MAY_DEF_OP(OPS, I) \ - (USE_FROM_PTR (V_MAY_DEF_OP_PTR ((OPS), (I)))) -#define SET_V_MAY_DEF_OP(OPS, I, V) \ - (SET_USE (V_MAY_DEF_OP_PTR ((OPS), (I)), (V))) - - -#define VUSE_OPS(ANN) get_vuse_ops (ANN) -#define STMT_VUSE_OPS(STMT) get_vuse_ops (stmt_ann(STMT)) -#define NUM_VUSES(OPS) ((OPS) ? (OPS)->num_vuses : 0) -#define VUSE_OP_PTR(OPS, I) get_vuse_op_ptr ((OPS), (I)) -#define VUSE_OP(OPS, I) (USE_FROM_PTR (VUSE_OP_PTR ((OPS), (I)))) -#define SET_VUSE_OP(OPS, I, V) (SET_USE (VUSE_OP_PTR ((OPS), (I)), (V))) - - -#define V_MUST_DEF_OPS(ANN) get_v_must_def_ops (ANN) -#define STMT_V_MUST_DEF_OPS(STMT) get_v_must_def_ops (stmt_ann (STMT)) -#define NUM_V_MUST_DEFS(OPS) ((OPS) ? (OPS)->num_v_must_defs : 0) -#define V_MUST_DEF_OP_PTR(OPS, I) get_v_must_def_op_ptr ((OPS), (I)) -#define V_MUST_DEF_OP(OPS, I) \ - (DEF_FROM_PTR (V_MUST_DEF_OP_PTR ((OPS), (I)))) -#define SET_V_MUST_DEF_OP(OPS, I, V) \ - (SET_DEF (V_MUST_DEF_OP_PTR ((OPS), (I)), (V))) - + struct voptype_d *next; + tree def_var; + vuse_vec_t usev; +}; +typedef struct voptype_d *voptype_p; + +/* 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[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 +{ + /* Statement operands. */ + struct def_optype_d * def_ops; + struct use_optype_d * use_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 USE_FROM_PTR(PTR) get_use_from_ptr (PTR) +#define DEF_FROM_PTR(PTR) get_def_from_ptr (PTR) +#define SET_USE(USE, V) set_ssa_use_from_ptr (USE, V) +#define SET_DEF(DEF, V) ((*(DEF)) = (V)) + +#define USE_STMT(USE) (USE)->stmt + +#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 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,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 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)) @@ -148,22 +196,163 @@ typedef v_must_def_optype_t *v_must_def_optype; #define SET_PHI_ARG_DEF(PHI, I, V) \ SET_USE (PHI_ARG_DEF_PTR ((PHI), (I)), (V)) #define PHI_ARG_DEF_FROM_EDGE(PHI, E) \ - PHI_ARG_DEF ((PHI), \ - phi_arg_from_edge ((PHI),(E))) + PHI_ARG_DEF ((PHI), (E)->dest_idx) #define PHI_ARG_DEF_PTR_FROM_EDGE(PHI, E) \ - PHI_ARG_DEF_PTR ((PHI), \ - phi_arg_from_edge ((PHI),(E))) + PHI_ARG_DEF_PTR ((PHI), (E)->dest_idx) +#define PHI_ARG_INDEX_FROM_USE(USE) phi_arg_index_from_use (USE) extern void init_ssa_operands (void); extern void fini_ssa_operands (void); -extern void verify_start_operands (tree); -extern void finalize_ssa_stmt_operands (tree); -void add_vuse (tree, tree); -extern void get_stmt_operands (tree); -extern void remove_vuses (tree); -extern void remove_v_may_defs (tree); -extern void remove_v_must_defs (tree); +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 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 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_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 + optimized away, resulting in little overhead. */ + +typedef struct ssa_operand_iterator_d +{ + def_optype_p defs; + use_optype_p uses; + 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 + execution of the loop. */ +#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 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_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_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 + ssa_op_iter structure used to control the loop. */ +#define FOR_EACH_SSA_TREE_OPERAND(TREEVAR, STMT, ITER, FLAGS) \ + for (TREEVAR = op_iter_init_tree (&(ITER), STMT, FLAGS); \ + !op_iter_done (&(ITER)); \ + TREEVAR = op_iter_next_tree (&(ITER))) + +/* This macro executes a loop over the operands of STMT specified in FLAG, + returning each operand as a 'use_operand_p' in the variable USEVAR. + ITER is an ssa_op_iter structure used to control the loop. */ +#define FOR_EACH_SSA_USE_OPERAND(USEVAR, STMT, ITER, FLAGS) \ + for (USEVAR = op_iter_init_use (&(ITER), STMT, FLAGS); \ + !op_iter_done (&(ITER)); \ + USEVAR = op_iter_next_use (&(ITER))) + +/* This macro executes a loop over the operands of STMT specified in FLAG, + returning each operand as a 'def_operand_p' in the variable DEFVAR. + ITER is an ssa_op_iter structure used to control the loop. */ +#define FOR_EACH_SSA_DEF_OPERAND(DEFVAR, STMT, ITER, FLAGS) \ + for (DEFVAR = op_iter_init_def (&(ITER), STMT, FLAGS); \ + !op_iter_done (&(ITER)); \ + DEFVAR = op_iter_next_def (&(ITER))) + +/* 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_VDEF_OPERAND(DEFVAR, USEVECT, STMT, ITER) \ + for (op_iter_init_vdef (&(ITER), STMT, &(USEVECT), &(DEFVAR)); \ + !op_iter_done (&(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) \ + for ((USEVAR) = op_iter_init_phiuse (&(ITER), STMT, FLAGS); \ + !op_iter_done (&(ITER)); \ + (USEVAR) = op_iter_next_use (&(ITER))) + + +/* This macro will execute a loop over a stmt, regardless of whether it is + a real stmt or a PHI node, looking at the USE nodes matching FLAGS. */ +#define FOR_EACH_PHI_OR_STMT_USE(USEVAR, STMT, ITER, FLAGS) \ + for ((USEVAR) = (TREE_CODE (STMT) == PHI_NODE \ + ? op_iter_init_phiuse (&(ITER), STMT, FLAGS) \ + : op_iter_init_use (&(ITER), STMT, FLAGS)); \ + !op_iter_done (&(ITER)); \ + (USEVAR) = op_iter_next_use (&(ITER))) + +/* This macro will execute a loop over a stmt, regardless of whether it is + a real stmt or a PHI node, looking at the DEF nodes matching FLAGS. */ +#define FOR_EACH_PHI_OR_STMT_DEF(DEFVAR, STMT, ITER, FLAGS) \ + for ((DEFVAR) = (TREE_CODE (STMT) == PHI_NODE \ + ? op_iter_init_phidef (&(ITER), STMT, FLAGS) \ + : op_iter_init_def (&(ITER), STMT, FLAGS)); \ + !op_iter_done (&(ITER)); \ + (DEFVAR) = op_iter_next_def (&(ITER))) + +/* This macro returns an operand in STMT as a tree if it is the ONLY + operand matching FLAGS. If there are 0 or more than 1 operand matching + FLAGS, then NULL_TREE is returned. */ +#define SINGLE_SSA_TREE_OPERAND(STMT, FLAGS) \ + single_ssa_tree_operand (STMT, FLAGS) + +/* This macro returns an operand in STMT as a use_operand_p if it is the ONLY + operand matching FLAGS. If there are 0 or more than 1 operand matching + FLAGS, then NULL_USE_OPERAND_P is returned. */ +#define SINGLE_SSA_USE_OPERAND(STMT, FLAGS) \ + single_ssa_use_operand (STMT, FLAGS) + +/* This macro returns an operand in STMT as a def_operand_p if it is the ONLY + operand matching FLAGS. If there are 0 or more than 1 operand matching + 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. */ +#define ZERO_SSA_OPERANDS(STMT, FLAGS) zero_ssa_operands (STMT, FLAGS) + +/* This macro counts the number of operands in STMT matching FLAGS. */ +#define NUM_SSA_OPERANDS(STMT, FLAGS) num_ssa_operands (STMT, FLAGS) #endif /* GCC_TREE_SSA_OPERANDS_H */