diff options
Diffstat (limited to 'gcc/sese.h')
| -rw-r--r-- | gcc/sese.h | 19 |
1 files changed, 17 insertions, 2 deletions
@@ -56,7 +56,8 @@ extern sese new_sese (edge, edge); extern void free_sese (sese); extern void sese_insert_phis_for_liveouts (sese, basic_block, edge, edge); extern void build_sese_loop_nests (sese); -extern edge copy_bb_and_scalar_dependences (basic_block, sese, edge, htab_t); +extern edge copy_bb_and_scalar_dependences (basic_block, sese, edge, + VEC (tree, heap) *); extern struct loop *outermost_loop_in_sese (sese, basic_block); extern void insert_loop_close_phis (htab_t, loop_p); extern void insert_guard_phis (basic_block, edge, edge, htab_t, htab_t); @@ -261,7 +262,6 @@ DEF_VEC_ALLOC_P (rename_map_elt, heap); extern void debug_rename_map (htab_t); extern hashval_t rename_map_elt_info (const void *); extern int eq_rename_map_elts (const void *, const void *); -extern void set_rename (htab_t, tree, tree); /* Constructs a new SCEV_INFO_STR structure for VAR and INSTANTIATED_BELOW. */ @@ -386,4 +386,19 @@ nb_common_loops (sese region, gimple_bb_p gbb1, gimple_bb_p gbb2) return sese_loop_depth (region, common); } +/* Return true when DEF can be analyzed in REGION by the scalar + evolution analyzer. */ + +static inline bool +scev_analyzable_p (tree def, sese region) +{ + gimple stmt = SSA_NAME_DEF_STMT (def); + loop_p loop = loop_containing_stmt (stmt); + tree scev = scalar_evolution_in_region (region, loop, def); + + return !chrec_contains_undetermined (scev) + && TREE_CODE (scev) != SSA_NAME + && evolution_function_is_affine_p (scev); +} + #endif |