* function.h (struct function): Add cannot_be_copied_reason,

	and cannot_be_copied_set.
	* tree-inline.c (has_label_address_in_static_1): Rename from
	inline_forbidden_p_2; don't set inline_forbidden_reason here.
	(cannot_copy_type_1): Rename from inline_forbidden_p_op; likewise
	don't set inline_forbidden_reason.
	(copy_forbidden): New function, split out of inline_forbidden_p.
	(inline_forbidden_p_stmt): Don't check for nonlocal labels here.
	(inline_forbidden_p): Use copy_forbidden.
	(tree_versionable_function_p): Likewise.
	(inlinable_function_p): Merge into tree_inlinable_function_p.
	(tree_function_versioning): Remap cfun->nonlocal_goto_save_area.
	* ipa-cp.c (ipcp_versionable_function_p): New function.
	(ipcp_cloning_candidate_p): Use it.
	(ipcp_node_modifiable_p): Likewise.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@148981 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 11 insertions, 1 deletions

diff --git a/gcc/function.h b/gcc/function.h
index de3a46acc52..8f69429d150 100644
--- a/gcc/function.h
+++ b/gcc/function.h
@@ -524,11 +524,17 @@ struct GTY(()) function {
   /* Properties used by the pass manager.  */
   unsigned int curr_properties;
   unsigned int last_verified;
+
   /* Interprocedural passes scheduled to have their transform functions
      applied next time we execute local pass on them.  We maintain it
      per-function in order to allow IPA passes to introduce new functions.  */
   VEC(ipa_opt_pass,heap) * GTY((skip)) ipa_transforms_to_apply;
 
+  /* Non-null if the function does something that would prevent it from
+     being copied; this applies to both versioning and inlining.  Set to
+     a string describing the reason for failure.  */
+  const char * GTY((skip)) cannot_be_copied_reason;
+
   /* Collected bit flags.  */
 
   /* Number of units of general registers that need saving in stdarg
@@ -540,7 +546,6 @@ struct GTY(()) function {
      function.  */
   unsigned int va_list_fpr_size : 8;
 
-
   /* How commonly executed the function is.  Initialized during branch
      probabilities pass.  */
   ENUM_BITFIELD (function_frequency) function_frequency : 2;
@@ -556,6 +561,11 @@ struct GTY(()) function {
      from nested functions.  */
   unsigned int has_nonlocal_label : 1;
 
+  /* Nonzero if we've set cannot_be_copied_reason.  I.e. if 
+     (cannot_be_copied_set && !cannot_be_copied_reason), the function
+     can in fact be copied.  */
+  unsigned int cannot_be_copied_set : 1;
+
   /* Nonzero if current function uses stdarg.h or equivalent.  */
   unsigned int stdarg : 1;