diff options
Diffstat (limited to 'gcc/tree-flow.h')
| -rw-r--r-- | gcc/tree-flow.h | 45 |
1 files changed, 38 insertions, 7 deletions
diff --git a/gcc/tree-flow.h b/gcc/tree-flow.h index e18c1e4..0f97a5b 100644 --- a/gcc/tree-flow.h +++ b/gcc/tree-flow.h @@ -38,6 +38,39 @@ typedef struct basic_block_def *basic_block; #endif /*--------------------------------------------------------------------------- + Attributes for SSA_NAMEs. + + NOTE: These structures are stored in struct tree_ssa_name + but are only used by the tree optimizers, so it makes better sense + to declare them here to avoid recompiling unrelated files when + making changes. +---------------------------------------------------------------------------*/ + +/* Aliasing information for SSA_NAMEs representing pointer variables. */ +struct ptr_info_def GTY(()) +{ + /* Nonzero if points-to analysis couldn't determine where this pointer + is pointing to. */ + unsigned int pt_anything : 1; + + /* Nonzero if this pointer is the result of a call to malloc. */ + unsigned int pt_malloc : 1; + + /* Nonzero if the value of this pointer escapes the current function. */ + unsigned int value_escapes_p : 1; + + /* Set of variables that this pointer may point to. */ + bitmap pt_vars; + + /* If this pointer has been dereferenced, and points-to information is + more precise than type-based aliasing, indirect references to this + pointer will be represented by this memory tag, instead of the type + tag computed by TBAA. */ + tree name_mem_tag; +}; + + +/*--------------------------------------------------------------------------- Tree annotations stored in tree_common.ann ---------------------------------------------------------------------------*/ enum tree_ann_type { TREE_ANN_COMMON, VAR_ANN, STMT_ANN }; @@ -554,8 +587,6 @@ extern void debug_dominator_optimization_stats (void); extern void propagate_value (use_operand_p, tree); extern void propagate_tree_value (tree *, tree); extern void replace_exp (use_operand_p, tree); -extern bool cprop_into_stmt (tree, varray_type); -extern void cprop_into_successor_phis (basic_block, varray_type, bitmap); /* In tree-flow-inline.h */ static inline int phi_arg_from_edge (tree, edge); @@ -578,12 +609,12 @@ void print_value_expressions (FILE *, tree); /* In tree-vn.c */ -bool expressions_equal_p (tree e1, tree e2); +bool expressions_equal_p (tree, tree); tree get_value_handle (tree); -hashval_t vn_compute (tree, hashval_t); -tree vn_lookup_or_add (tree); -void vn_add (tree, tree); -tree vn_lookup (tree); +hashval_t vn_compute (tree, hashval_t, vuse_optype); +tree vn_lookup_or_add (tree, vuse_optype); +void vn_add (tree, tree, vuse_optype); +tree vn_lookup (tree, vuse_optype); void vn_init (void); void vn_delete (void); |