diff options
Diffstat (limited to 'gcc/tree-ssanames.c')
| -rw-r--r-- | gcc/tree-ssanames.c | 67 |
1 files changed, 8 insertions, 59 deletions
diff --git a/gcc/tree-ssanames.c b/gcc/tree-ssanames.c index b0c430b8f96..0f0381f4a98 100644 --- a/gcc/tree-ssanames.c +++ b/gcc/tree-ssanames.c @@ -61,9 +61,6 @@ Boston, MA 02111-1307, USA. */ /* Array of all SSA_NAMEs used in the function. */ varray_type ssa_names; -/* Bitmap of ssa names marked for rewriting. */ -static bitmap ssa_names_to_rewrite; - /* Free list of SSA_NAMEs. This list is wiped at the end of each function after we leave SSA form. */ static GTY (()) tree free_ssanames; @@ -77,54 +74,6 @@ unsigned int ssa_name_nodes_reused; unsigned int ssa_name_nodes_created; #endif -/* Returns true if ssa name VAR is marked for rewrite. */ - -bool -marked_for_rewrite_p (tree var) -{ - return bitmap_bit_p (ssa_names_to_rewrite, SSA_NAME_VERSION (var)); -} - -/* Returns true if any ssa name is marked for rewrite. */ - -bool -any_marked_for_rewrite_p (void) -{ - if (!ssa_names_to_rewrite) - return false; - - return !bitmap_empty_p (ssa_names_to_rewrite); -} - -/* Mark ssa name VAR for rewriting. */ - -void -mark_for_rewrite (tree var) -{ - bitmap_set_bit (ssa_names_to_rewrite, SSA_NAME_VERSION (var)); -} - -/* Unmark all ssa names marked for rewrite. */ - -void -unmark_all_for_rewrite (void) -{ - bitmap_clear (ssa_names_to_rewrite); -} - -/* Return the bitmap of ssa names to rewrite. Copy the bitmap, - so that the optimizers cannot access internals directly */ - -bitmap -marked_ssa_names (void) -{ - bitmap ret = BITMAP_ALLOC (NULL); - - bitmap_copy (ret, ssa_names_to_rewrite); - - return ret; -} - /* Initialize management of SSA_NAMEs. */ void @@ -138,7 +87,6 @@ init_ssanames (void) large. */ VARRAY_PUSH_TREE (ssa_names, NULL_TREE); free_ssanames = NULL; - ssa_names_to_rewrite = BITMAP_ALLOC (NULL); } /* Finalize management of SSA_NAMEs. */ @@ -146,7 +94,6 @@ init_ssanames (void) void fini_ssanames (void) { - BITMAP_FREE (ssa_names_to_rewrite); ggc_free (ssa_names); ssa_names = NULL; free_ssanames = NULL; @@ -237,11 +184,13 @@ release_ssa_name (tree var) if (var == var_ann (SSA_NAME_VAR (var))->default_def) return; - /* If the ssa name is marked for rewriting, it may have multiple definitions, - but we may happen to remove just one of them. So do not remove the - ssa name now. */ - if (marked_for_rewrite_p (var)) - return; + /* If VAR has been registered for SSA updating, don't remove it. + After update_ssa has run, the name will be released. */ + if (name_registered_for_update_p (var)) + { + release_ssa_name_after_update_ssa (var); + return; + } /* release_ssa_name can be called multiple times on a single SSA_NAME. However, it should only end up on our free list one time. We @@ -304,7 +253,7 @@ duplicate_ssa_name (tree name, tree stmt) /* Creates a duplicate of the ptr_info_def at PTR_INFO for use by - the ssa name NAME. */ + the SSA name NAME. */ void duplicate_ssa_name_ptr_info (tree name, struct ptr_info_def *ptr_info) |