diff options
Diffstat (limited to 'gcc/tree-flow.h')
| -rw-r--r-- | gcc/tree-flow.h | 39 |
1 files changed, 38 insertions, 1 deletions
diff --git a/gcc/tree-flow.h b/gcc/tree-flow.h index d9827e1..4f3a4a6 100644 --- a/gcc/tree-flow.h +++ b/gcc/tree-flow.h @@ -40,12 +40,15 @@ typedef struct basic_block_def *basic_block; /*--------------------------------------------------------------------------- Tree annotations stored in tree_common.ann ---------------------------------------------------------------------------*/ -enum tree_ann_type { TREE_ANN_COMMON, VAR_ANN, STMT_ANN }; +enum tree_ann_type { TREE_ANN_COMMON, VAR_ANN, CST_ANN, EXPR_ANN, STMT_ANN }; struct tree_ann_common_d GTY(()) { /* Annotation type. */ enum tree_ann_type type; + + /* The value handle for this expression. Used by GVN-PRE. */ + tree GTY((skip)) value_handle; }; /* It is advantageous to avoid things like life analysis for variables which @@ -164,6 +167,11 @@ struct var_ann_d GTY(()) live at the same time and this can happen for each call to the dominator optimizer. */ tree current_def; + + /* The set of expressions represented by this variable if it is a + value handle. This is used by GVN-PRE. */ + PTR GTY ((skip)) expr_set; + }; @@ -256,17 +264,38 @@ struct stmt_ann_d GTY(()) }; +struct cst_ann_d GTY (()) +{ + struct tree_ann_common_d common; + +}; + +struct expr_ann_d GTY(()) +{ + struct tree_ann_common_d common; + +}; + + union tree_ann_d GTY((desc ("ann_type ((tree_ann)&%h)"))) { struct tree_ann_common_d GTY((tag ("TREE_ANN_COMMON"))) common; struct var_ann_d GTY((tag ("VAR_ANN"))) decl; + struct expr_ann_d GTY((tag ("EXPR_ANN"))) expr; + struct cst_ann_d GTY((tag ("CST_ANN"))) cst; struct stmt_ann_d GTY((tag ("STMT_ANN"))) stmt; }; typedef union tree_ann_d *tree_ann; typedef struct var_ann_d *var_ann_t; typedef struct stmt_ann_d *stmt_ann_t; +typedef struct expr_ann_d *expr_ann_t; +typedef struct cst_ann_d *cst_ann_t; +static inline cst_ann_t cst_ann (tree); +static inline cst_ann_t get_cst_ann (tree); +static inline expr_ann_t expr_ann (tree); +static inline expr_ann_t get_expr_ann (tree); static inline var_ann_t var_ann (tree); static inline var_ann_t get_var_ann (tree); static inline stmt_ann_t stmt_ann (tree); @@ -464,6 +493,8 @@ extern void dump_generic_bb (FILE *, basic_block, int, int); /* In tree-dfa.c */ extern var_ann_t create_var_ann (tree); +extern cst_ann_t create_cst_ann (tree); +extern expr_ann_t create_expr_ann (tree); extern stmt_ann_t create_stmt_ann (tree); extern tree create_phi_node (tree, basic_block); extern void add_phi_arg (tree *, tree, edge); @@ -567,6 +598,12 @@ extern bool tree_can_throw_internal (tree); extern bool tree_can_throw_external (tree); extern void add_stmt_to_eh_region (tree, int); +/* In tree-ssa-pre.c */ +tree get_value_handle (tree); +void set_value_handle (tree, tree); +void debug_value_expressions (tree); +void print_value_expressions (FILE *, tree); + #include "tree-flow-inline.h" #endif /* _TREE_FLOW_H */ |