* cgraph.c (cgraph_release_function_body): Plug memory leak on

	ipa_transforms_to_apply and CFG; ggc_free gimple df and struct function
	so we are sure we do not dangle it forever.
	* function.c (outer_function_chain, find_function_data): Remove.
	(function_context_stack): New.
	(push_function_context, pop_function_context): Update.
	* function.h (struct function): Remove pointer outer.
	(outer_function_chain, find_function_data): Remove.
	* stmt.c (force_label_rtx): Remove dead call of find_function_data.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@140285 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 8 insertions, 27 deletions

diff --git a/gcc/function.c b/gcc/function.c
index 412e6fa9af0..41c5a46a621 100644
--- a/gcc/function.c
+++ b/gcc/function.c
@@ -208,23 +208,14 @@ static void do_clobber_return_reg (rtx, void *);
 static void do_use_return_reg (rtx, void *);
 static void set_insn_locators (rtx, int) ATTRIBUTE_UNUSED;
 
-/* Pointer to chain of `struct function' for containing functions.  */
-struct function *outer_function_chain;
-
-/* Given a function decl for a containing function,
-   return the `struct function' for it.  */
-
-struct function *
-find_function_data (tree decl)
-{
-  struct function *p;
+/* Stack of nested functions.  */
+/* Keep track of the cfun stack.  */
 
-  for (p = outer_function_chain; p; p = p->outer)
-    if (p->decl == decl)
-      return p;
+typedef struct function *function_p;
 
-  gcc_unreachable ();
-}
+DEF_VEC_P(function_p);
+DEF_VEC_ALLOC_P(function_p,heap);
+static VEC(function_p,heap) *function_context_stack;
 
 /* Save the current context for compilation of a nested function.
    This is called from language-specific code.  */
@@ -235,8 +226,7 @@ push_function_context (void)
   if (cfun == 0)
     allocate_struct_function (NULL, false);
 
-  cfun->outer = outer_function_chain;
-  outer_function_chain = cfun;
+  VEC_safe_push (function_p, heap, function_context_stack, cfun);
   set_cfun (NULL);
 }
 
@@ -246,10 +236,8 @@ push_function_context (void)
 void
 pop_function_context (void)
 {
-  struct function *p = outer_function_chain;
-
+  struct function *p = VEC_pop (function_p, function_context_stack);
   set_cfun (p);
-  outer_function_chain = p->outer;
   current_function_decl = p->decl;
 
   /* Reset variables that have known state during rtx generation.  */
@@ -3905,13 +3893,6 @@ set_cfun (struct function *new_cfun)
     }
 }
 
-/* Keep track of the cfun stack.  */
-
-typedef struct function *function_p;
-
-DEF_VEC_P(function_p);
-DEF_VEC_ALLOC_P(function_p,heap);
-
 /* Initialized with NOGC, making this poisonous to the garbage collector.  */
 
 static VEC(function_p,heap) *cfun_stack;