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-rw-r--r--gcc/stmt.c77
1 files changed, 32 insertions, 45 deletions
diff --git a/gcc/stmt.c b/gcc/stmt.c
index 9caa5c2..0fb7fb9 100644
--- a/gcc/stmt.c
+++ b/gcc/stmt.c
@@ -204,8 +204,6 @@ struct nesting GTY(())
/* Chain of labels defined inside this binding contour.
For contours that have stack levels or cleanups. */
struct label_chain *label_chain;
- /* Number of function calls seen, as of start of this block. */
- int n_function_calls;
/* Nonzero if this is associated with an EH region. */
int exception_region;
/* The saved target_temp_slot_level from our outer block.
@@ -415,7 +413,7 @@ static void expand_null_return_1 PARAMS ((rtx));
static enum br_predictor return_prediction PARAMS ((rtx));
static void expand_value_return PARAMS ((rtx));
static int tail_recursion_args PARAMS ((tree, tree));
-static void expand_cleanups PARAMS ((tree, tree, int, int));
+static void expand_cleanups PARAMS ((tree, int, int));
static void check_seenlabel PARAMS ((void));
static void do_jump_if_equal PARAMS ((rtx, rtx, rtx, int));
static int estimate_case_costs PARAMS ((case_node_ptr));
@@ -735,7 +733,7 @@ expand_goto_internal (body, label, last_insn)
/* Execute the cleanups for blocks we are exiting. */
if (block->data.block.cleanups != 0)
{
- expand_cleanups (block->data.block.cleanups, NULL_TREE, 1, 1);
+ expand_cleanups (block->data.block.cleanups, 1, 1);
do_pending_stack_adjust ();
}
}
@@ -1026,7 +1024,7 @@ fixup_gotos (thisblock, stack_level, cleanup_list, first_insn, dont_jump_in)
if (TREE_ADDRESSABLE (lists)
&& TREE_VALUE (lists) != 0)
{
- expand_cleanups (TREE_VALUE (lists), NULL_TREE, 1, 1);
+ expand_cleanups (TREE_VALUE (lists), 1, 1);
/* Pop any pushes done in the cleanups,
in case function is about to return. */
do_pending_stack_adjust ();
@@ -1089,7 +1087,7 @@ fixup_gotos (thisblock, stack_level, cleanup_list, first_insn, dont_jump_in)
start_sequence ();
(*lang_hooks.decls.pushlevel) (0);
(*lang_hooks.decls.set_block) (f->context);
- expand_cleanups (TREE_VALUE (lists), NULL_TREE, 1, 1);
+ expand_cleanups (TREE_VALUE (lists), 1, 1);
do_pending_stack_adjust ();
cleanup_insns = get_insns ();
(*lang_hooks.decls.poplevel) (1, 0, 0);
@@ -3418,7 +3416,6 @@ expand_start_bindings_and_block (flags, block)
thisblock->depth = ++nesting_depth;
thisblock->data.block.stack_level = 0;
thisblock->data.block.cleanups = 0;
- thisblock->data.block.n_function_calls = 0;
thisblock->data.block.exception_region = 0;
thisblock->data.block.block_target_temp_slot_level = target_temp_slot_level;
@@ -3740,8 +3737,7 @@ expand_end_bindings (vars, mark_ends, dont_jump_in)
/* If necessary, make handlers for nonlocal gotos taking
place in the function calls in this block. */
- if (function_call_count != thisblock->data.block.n_function_calls
- && nonlocal_labels
+ if (function_call_count != 0 && nonlocal_labels
/* Make handler for outermost block
if there were any nonlocal gotos to this function. */
&& (thisblock->next == 0 ? current_function_has_nonlocal_label
@@ -3795,7 +3791,7 @@ expand_end_bindings (vars, mark_ends, dont_jump_in)
reachable = (! insn || GET_CODE (insn) != BARRIER);
/* Do the cleanups. */
- expand_cleanups (thisblock->data.block.cleanups, NULL_TREE, 0, reachable);
+ expand_cleanups (thisblock->data.block.cleanups, 0, reachable);
if (reachable)
do_pending_stack_adjust ();
@@ -4272,11 +4268,6 @@ expand_anon_union_decl (decl, cleanup, decl_elts)
/* Expand a list of cleanups LIST.
Elements may be expressions or may be nested lists.
- If DONT_DO is nonnull, then any list-element
- whose TREE_PURPOSE matches DONT_DO is omitted.
- This is sometimes used to avoid a cleanup associated with
- a value that is being returned out of the scope.
-
If IN_FIXUP is nonzero, we are generating this cleanup for a fixup
goto and handle protection regions specially in that case.
@@ -4284,48 +4275,44 @@ expand_anon_union_decl (decl, cleanup, decl_elts)
code about this finalization. */
static void
-expand_cleanups (list, dont_do, in_fixup, reachable)
+expand_cleanups (list, in_fixup, reachable)
tree list;
- tree dont_do;
int in_fixup;
int reachable;
{
tree tail;
for (tail = list; tail; tail = TREE_CHAIN (tail))
- if (dont_do == 0 || TREE_PURPOSE (tail) != dont_do)
+ if (TREE_CODE (TREE_VALUE (tail)) == TREE_LIST)
+ expand_cleanups (TREE_VALUE (tail), in_fixup, reachable);
+ else
{
- if (TREE_CODE (TREE_VALUE (tail)) == TREE_LIST)
- expand_cleanups (TREE_VALUE (tail), dont_do, in_fixup, reachable);
- else
- {
- if (! in_fixup && using_eh_for_cleanups_p)
- expand_eh_region_end_cleanup (TREE_VALUE (tail));
+ if (! in_fixup && using_eh_for_cleanups_p)
+ expand_eh_region_end_cleanup (TREE_VALUE (tail));
- if (reachable && !CLEANUP_EH_ONLY (tail))
+ if (reachable && !CLEANUP_EH_ONLY (tail))
+ {
+ /* Cleanups may be run multiple times. For example,
+ when exiting a binding contour, we expand the
+ cleanups associated with that contour. When a goto
+ within that binding contour has a target outside that
+ contour, it will expand all cleanups from its scope to
+ the target. Though the cleanups are expanded multiple
+ times, the control paths are non-overlapping so the
+ cleanups will not be executed twice. */
+
+ /* We may need to protect from outer cleanups. */
+ if (in_fixup && using_eh_for_cleanups_p)
{
- /* Cleanups may be run multiple times. For example,
- when exiting a binding contour, we expand the
- cleanups associated with that contour. When a goto
- within that binding contour has a target outside that
- contour, it will expand all cleanups from its scope to
- the target. Though the cleanups are expanded multiple
- times, the control paths are non-overlapping so the
- cleanups will not be executed twice. */
-
- /* We may need to protect from outer cleanups. */
- if (in_fixup && using_eh_for_cleanups_p)
- {
- expand_eh_region_start ();
-
- expand_expr (TREE_VALUE (tail), const0_rtx, VOIDmode, 0);
+ expand_eh_region_start ();
- expand_eh_region_end_fixup (TREE_VALUE (tail));
- }
- else
- expand_expr (TREE_VALUE (tail), const0_rtx, VOIDmode, 0);
+ expand_expr (TREE_VALUE (tail), const0_rtx, VOIDmode, 0);
- free_temp_slots ();
+ expand_eh_region_end_fixup (TREE_VALUE (tail));
}
+ else
+ expand_expr (TREE_VALUE (tail), const0_rtx, VOIDmode, 0);
+
+ free_temp_slots ();
}
}
}