c-decl.c (struct language_function): Renamed from struct c_function.

	* c-decl.c (struct language_function): Renamed from struct c_function.
	Delete elt NEXT.
	(c_function_chain): Delete.
	(push_c_function_context): New arg F.  Don't warn about nested
	functions here.  Fill LANGUAGE elt of F.  Delete code to update
	c_function_chain.  Don't call push_function_context.
	(pop_c_function_context): New arg F.  Restore from there instead of
	from c_function_chain.  Don't call pop_function_context.  Clear out
	LANGUAGE field of F when done.
	* c-lang.c: Include "function.h"
	(lang_init): Initialize save_lang_status and restore_lang_status.
	* c-parse.in (nested_function, nested_function_notype): Warn about
	nested functions.  Call push_function_context/pop_function_context
	instead of the _c_ variants.
	* c-tree.h (push_c_function_context, pop_c_function_context): Update
	prototype.
	* Makefile.in (c-lang.o): Update dependencies.

	* emit-rtl.c (init_emit): Use xmalloc to allocate regno_reg_rtx,
	regno_pointer_flag, regno_pointer_align.
	(gen_reg_rtx): Use xrealloc to enlarge them.
	(free_emit_status): New function.
	* function.c (mark_machine_status, mark_lang_status): New variables.
	(assign_stack_local_1): Renamed from assign_outer_stack_local.  Merge
	in some bits from assign_stack_local.  All callers changed to use new
	name.
	(assign_stack_local): Just call assign_stack_local_1.
	(free_after_compilation): New function.
	(put_reg_into_stack): Simplify to always call assign_stack_local_1.
	(trampoline_address): Likewise.
	(assign_parms): Use xcalloc/xrealloc to allocate parm_reg_stack_loc.
	(prepare_function_start): Explicitly clear some more variables.
	* function.h (struct function): New elt can_garbage_collect.
	(mark_machine_status, mark_lang_status): Declare variables.
	(free_after_compilation, free_emit_status, free_varasm_status,
	init_varasm_status): Declare functions.
	* toplev.c (rest_of_compilation): Call free_after_compilation when
	done with the current function.
	* varasm.c (free_varasm_status): New function.

From-SVN: r29117

1 files changed, 10 insertions, 21 deletions

diff --git a/gcc/c-decl.c b/gcc/c-decl.c
index 97fdd8a..68720ec 100644
--- a/gcc/c-decl.c
+++ b/gcc/c-decl.c
@@ -6981,9 +6981,8 @@ finish_function (nested)
    that keep track of the progress of compilation of the current function.
    Used for nested functions.  */
 
-struct c_function
+struct language_function
 {
-  struct c_function *next;
   tree named_labels;
   tree shadowed_labels;
   int returns_value;
@@ -6993,24 +6992,16 @@ struct c_function
   struct binding_level *binding_level;
 };
 
-struct c_function *c_function_chain;
-
 /* Save and reinitialize the variables
    used during compilation of a C function.  */
 
 void
-push_c_function_context ()
+push_c_function_context (f)
+     struct function *f;
 {
-  struct c_function *p
-    = (struct c_function *) xmalloc (sizeof (struct c_function));
-
-  if (pedantic)
-    pedwarn ("ANSI C forbids nested functions");
-
-  push_function_context ();
-
-  p->next = c_function_chain;
-  c_function_chain = p;
+  struct language_function *p;
+  p = (struct language_function *) xmalloc (sizeof (struct language_function));
+  f->language = p;
 
   p->named_labels = named_labels;
   p->shadowed_labels = shadowed_labels;
@@ -7024,9 +7015,10 @@ push_c_function_context ()
 /* Restore the variables used during compilation of a C function.  */
 
 void
-pop_c_function_context ()
+pop_c_function_context (f)
+     struct function *f;
 {
-  struct c_function *p = c_function_chain;
+  struct language_function *p = f->language;
   tree link;
 
   /* Bring back all the labels that were shadowed.  */
@@ -7044,10 +7036,6 @@ pop_c_function_context ()
       DECL_ARGUMENTS (current_function_decl) = 0;
     }
 
-  pop_function_context ();
-
-  c_function_chain = p->next;
-
   named_labels = p->named_labels;
   shadowed_labels = p->shadowed_labels;
   current_function_returns_value = p->returns_value;
@@ -7057,6 +7045,7 @@ pop_c_function_context ()
   current_binding_level = p->binding_level;
 
   free (p);
+  f->language = 0;
 }
 
 /* integrate_decl_tree calls this function, but since we don't use the