Implement N4514, C++ Extensions for Transactional Memory.

gcc/
	* builtins.def (BUILT_IN_ABORT): Add transaction_pure attribute.
gcc/c-family/
	* c-common.c (c_common_reswords): Add C++ TM TS keywords.
	(c_common_attribute_table): Add transaction_safe_dynamic.
	transaction_safe now affects type identity.
	(handle_tm_attribute): Handle transaction_safe_dynamic.
	* c-common.h (enum rid): Add RID_ATOMIC_NOEXCEPT,
	RID_ATOMIC_CANCEL, RID_SYNCHRONIZED.
	(OBJC_IS_CXX_KEYWORD): Add RID_SYNCHRONIZED.
	(D_TRANSMEM): New.
	* c-cppbuiltin.c (c_cpp_builtins): Define __cpp_transactional_memory.
	* c-pretty-print.c (pp_c_attributes_display): Don't print
	transaction_safe in C++.
gcc/c/
	* c-parser.c (c_lex_one_token): Handle @synchronized.
	* c-decl.c (match_builtin_function_types): A declaration of a built-in
	can change whether the function is transaction_safe.
gcc/cp/
	* cp-tree.h (struct cp_declarator): Add tx_qualifier field.
	(BCS_NORMAL, BCS_TRANSACTION): New enumerators.
	* lex.c (init_reswords): Limit TM kewords to -fgnu-tm.
	* parser.c (cp_lexer_get_preprocessor_token): Fix @synchronized.
	(make_call_declarator): Take tx_qualifier.
	(cp_parser_tx_qualifier_opt): New.
	(cp_parser_lambda_declarator_opt): Use it.
	(cp_parser_direct_declarator): Likewise.
	(cp_parser_statement): Handle atomic_noexcept, atomic_cancel.
	(cp_parser_compound_statement): Change in_try parameter to bcs_flags.
	(cp_parser_std_attribute): Map optimize_for_synchronized to
	transaction_callable.
	(cp_parser_transaction): Take the token.  Handle atomic_noexcept.
	* lambda.c (maybe_add_lambda_conv_op): Handle transaction-safety.
	* call.c (enum conversion_kind): Add ck_tsafe.
	(standard_conversion): Handle transaction-safety conversion.
	(convert_like_real, resolve_address_of_overloaded_function): Likewise.
	(check_methods): Diagnose transaction_safe_dynamic on non-virtual
	function.
	(look_for_tm_attr_overrides): Don't inherit transaction_safe_dynamic.
	* cvt.c (tx_safe_fn_type_p, tx_unsafe_fn_variant)
	(can_convert_tx_safety): New.
	* typeck.c (composite_pointer_type): Handle transaction-safety.
	* name-lookup.h (enum scope_kind): Add sk_transaction.
	* name-lookup.c (begin_scope): Handle it.
	* semantics.c (begin_compound_stmt): Pass it.
	* decl.c (check_previous_goto_1): Check it.
	(struct named_label_entry): Add in_transaction_scope.
	(poplevel_named_label_1): Set it.
	(check_goto): Check it.
	(duplicate_decls): A specialization can be transaction_safe
	independently of its template.
	(grokdeclarator): Handle tx-qualifier.
	* rtti.c (ptr_initializer): Handle transaction-safe.
	* search.c (check_final_overrider): Check transaction_safe_dynamic.
	Don't check transaction_safe.
	* mangle.c (write_function_type): Mangle transaction_safe here.
	(write_CV_qualifiers_for_type): Not here.
	(write_type): Preserve transaction_safe when stripping attributes.
	* error.c (dump_type_suffix): Print transaction_safe.
libiberty/
	* cp-demangle.c (d_cv_qualifiers): Dx means transaction_safe.
	(cplus_demangle_type): Let d_cv_qualifiers handle it.
	(d_dump, d_make_comp, has_return_type, d_encoding)
	(d_count_templates_scopes, d_print_comp_inner)
	(d_print_mod_list, d_print_mod, d_print_function_type)
	(is_ctor_or_dtor): Handle DEMANGLE_COMPONENT_TRANSACTION_SAFE.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@228462 138bc75d-0d04-0410-961f-82ee72b054a4

3 files changed, 43 insertions, 5 deletions

diff --git a/libiberty/ChangeLog b/libiberty/ChangeLog
index 985e4ae..3cd0374 100644
--- a/libiberty/ChangeLog
+++ b/libiberty/ChangeLog
@@ -32,6 +32,15 @@
 	Android hosts.
 	* configure: Regenerate.
 
+2015-09-30  Jason Merrill  <jason@redhat.com>
+
+	* cp-demangle.c (d_cv_qualifiers): Dx means transaction_safe.
+	(cplus_demangle_type): Let d_cv_qualifiers handle it.
+	(d_dump, d_make_comp, has_return_type, d_encoding)
+	(d_count_templates_scopes, d_print_comp_inner)
+	(d_print_mod_list, d_print_mod, d_print_function_type)
+	(is_ctor_or_dtor): Handle DEMANGLE_COMPONENT_TRANSACTION_SAFE.
+
 2015-09-30  Nick Clifton  <nickc@redhat.com>
 
 	Import the following patches from the GCC mainline:
diff --git a/libiberty/cp-demangle.c b/libiberty/cp-demangle.c
index c587895..ff608a3 100644
--- a/libiberty/cp-demangle.c
+++ b/libiberty/cp-demangle.c
@@ -686,6 +686,9 @@ d_dump (struct demangle_component *dc, int indent)
     case DEMANGLE_COMPONENT_RVALUE_REFERENCE_THIS:
       printf ("rvalue reference this\n");
       break;
+    case DEMANGLE_COMPONENT_TRANSACTION_SAFE:
+      printf ("transaction_safe this\n");
+      break;
     case DEMANGLE_COMPONENT_VENDOR_TYPE_QUAL:
       printf ("vendor type qualifier\n");
       break;
@@ -970,6 +973,7 @@ d_make_comp (struct d_info *di, enum demangle_component_type type,
     case DEMANGLE_COMPONENT_RESTRICT_THIS:
     case DEMANGLE_COMPONENT_VOLATILE_THIS:
     case DEMANGLE_COMPONENT_CONST_THIS:
+    case DEMANGLE_COMPONENT_TRANSACTION_SAFE:
     case DEMANGLE_COMPONENT_REFERENCE_THIS:
     case DEMANGLE_COMPONENT_RVALUE_REFERENCE_THIS:
     case DEMANGLE_COMPONENT_ARGLIST:
@@ -1212,6 +1216,7 @@ has_return_type (struct demangle_component *dc)
     case DEMANGLE_COMPONENT_CONST_THIS:
     case DEMANGLE_COMPONENT_REFERENCE_THIS:
     case DEMANGLE_COMPONENT_RVALUE_REFERENCE_THIS:
+    case DEMANGLE_COMPONENT_TRANSACTION_SAFE:
       return has_return_type (d_left (dc));
     }
 }
@@ -1268,6 +1273,7 @@ d_encoding (struct d_info *di, int top_level)
 	  while (dc->type == DEMANGLE_COMPONENT_RESTRICT_THIS
 		 || dc->type == DEMANGLE_COMPONENT_VOLATILE_THIS
 		 || dc->type == DEMANGLE_COMPONENT_CONST_THIS
+		 || dc->type == DEMANGLE_COMPONENT_TRANSACTION_SAFE
 		 || dc->type == DEMANGLE_COMPONENT_REFERENCE_THIS
 		 || dc->type == DEMANGLE_COMPONENT_RVALUE_REFERENCE_THIS)
 	    dc = d_left (dc);
@@ -1284,6 +1290,7 @@ d_encoding (struct d_info *di, int top_level)
 	      while (dcr->type == DEMANGLE_COMPONENT_RESTRICT_THIS
 		     || dcr->type == DEMANGLE_COMPONENT_VOLATILE_THIS
 		     || dcr->type == DEMANGLE_COMPONENT_CONST_THIS
+		     || dcr->type == DEMANGLE_COMPONENT_TRANSACTION_SAFE
 		     || dcr->type == DEMANGLE_COMPONENT_REFERENCE_THIS
 		     || dcr->type == DEMANGLE_COMPONENT_RVALUE_REFERENCE_THIS)
 		dcr = d_left (dcr);
@@ -2281,7 +2288,8 @@ cplus_demangle_type (struct d_info *di)
      names.  */
 
   peek = d_peek_char (di);
-  if (peek == 'r' || peek == 'V' || peek == 'K')
+  if (peek == 'r' || peek == 'V' || peek == 'K'
+      || (peek == 'D' && d_peek_next_char (di) == 'x'))
     {
       struct demangle_component **pret;
 
@@ -2592,7 +2600,7 @@ cplus_demangle_type (struct d_info *di)
   return ret;
 }
 
-/* <CV-qualifiers> ::= [r] [V] [K]  */
+/* <CV-qualifiers> ::= [r] [V] [K] [Dx] */
 
 static struct demangle_component **
 d_cv_qualifiers (struct d_info *di,
@@ -2603,7 +2611,8 @@ d_cv_qualifiers (struct d_info *di,
 
   pstart = pret;
   peek = d_peek_char (di);
-  while (peek == 'r' || peek == 'V' || peek == 'K')
+  while (peek == 'r' || peek == 'V' || peek == 'K'
+	 || (peek == 'D' && d_peek_next_char (di) == 'x'))
     {
       enum demangle_component_type t;
 
@@ -2622,13 +2631,19 @@ d_cv_qualifiers (struct d_info *di,
 	       : DEMANGLE_COMPONENT_VOLATILE);
 	  di->expansion += sizeof "volatile";
 	}
-      else
+      else if (peek == 'K')
 	{
 	  t = (member_fn
 	       ? DEMANGLE_COMPONENT_CONST_THIS
 	       : DEMANGLE_COMPONENT_CONST);
 	  di->expansion += sizeof "const";
 	}
+      else
+	{
+	  t = DEMANGLE_COMPONENT_TRANSACTION_SAFE;
+	  di->expansion += sizeof "transaction_safe";
+	  d_advance (di, 1);
+	}
 
       *pret = d_make_comp (di, t, NULL, NULL);
       if (*pret == NULL)
@@ -2694,7 +2709,7 @@ d_ref_qualifier (struct d_info *di, struct demangle_component *sub)
   return ret;
 }
 
-/* <function-type> ::= F [Y] <bare-function-type> [<ref-qualifier>] E  */
+/* <function-type> ::= F [Y] <bare-function-type> [<ref-qualifier>] [T] E  */
 
 static struct demangle_component *
 d_function_type (struct d_info *di)
@@ -3899,6 +3914,7 @@ d_count_templates_scopes (int *num_templates, int *num_scopes,
     case DEMANGLE_COMPONENT_CONST_THIS:
     case DEMANGLE_COMPONENT_REFERENCE_THIS:
     case DEMANGLE_COMPONENT_RVALUE_REFERENCE_THIS:
+    case DEMANGLE_COMPONENT_TRANSACTION_SAFE:
     case DEMANGLE_COMPONENT_VENDOR_TYPE_QUAL:
     case DEMANGLE_COMPONENT_POINTER:
     case DEMANGLE_COMPONENT_COMPLEX:
@@ -4420,6 +4436,7 @@ d_print_comp_inner (struct d_print_info *dpi, int options,
 		&& typed_name->type != DEMANGLE_COMPONENT_VOLATILE_THIS
 		&& typed_name->type != DEMANGLE_COMPONENT_CONST_THIS
 		&& typed_name->type != DEMANGLE_COMPONENT_RVALUE_REFERENCE_THIS
+		&& typed_name->type != DEMANGLE_COMPONENT_TRANSACTION_SAFE
 		&& typed_name->type != DEMANGLE_COMPONENT_REFERENCE_THIS)
 	      break;
 
@@ -4461,6 +4478,7 @@ d_print_comp_inner (struct d_print_info *dpi, int options,
 		   || local_name->type == DEMANGLE_COMPONENT_VOLATILE_THIS
 		   || local_name->type == DEMANGLE_COMPONENT_CONST_THIS
 		   || local_name->type == DEMANGLE_COMPONENT_REFERENCE_THIS
+		   || local_name->type == DEMANGLE_COMPONENT_TRANSACTION_SAFE
 		   || (local_name->type
 		       == DEMANGLE_COMPONENT_RVALUE_REFERENCE_THIS))
 	      {
@@ -4796,6 +4814,7 @@ d_print_comp_inner (struct d_print_info *dpi, int options,
     case DEMANGLE_COMPONENT_POINTER:
     case DEMANGLE_COMPONENT_COMPLEX:
     case DEMANGLE_COMPONENT_IMAGINARY:
+    case DEMANGLE_COMPONENT_TRANSACTION_SAFE:
     modifier:
       {
 	/* We keep a list of modifiers on the stack.  */
@@ -5484,6 +5503,7 @@ d_print_mod_list (struct d_print_info *dpi, int options,
 	      || mods->mod->type == DEMANGLE_COMPONENT_VOLATILE_THIS
 	      || mods->mod->type == DEMANGLE_COMPONENT_CONST_THIS
 	      || mods->mod->type == DEMANGLE_COMPONENT_REFERENCE_THIS
+	      || mods->mod->type == DEMANGLE_COMPONENT_TRANSACTION_SAFE
 	      || (mods->mod->type
 		  == DEMANGLE_COMPONENT_RVALUE_REFERENCE_THIS))))
     {
@@ -5542,6 +5562,7 @@ d_print_mod_list (struct d_print_info *dpi, int options,
 	     || dc->type == DEMANGLE_COMPONENT_VOLATILE_THIS
 	     || dc->type == DEMANGLE_COMPONENT_CONST_THIS
 	     || dc->type == DEMANGLE_COMPONENT_REFERENCE_THIS
+	     || dc->type == DEMANGLE_COMPONENT_TRANSACTION_SAFE
 	     || dc->type == DEMANGLE_COMPONENT_RVALUE_REFERENCE_THIS)
 	dc = d_left (dc);
 
@@ -5578,6 +5599,9 @@ d_print_mod (struct d_print_info *dpi, int options,
     case DEMANGLE_COMPONENT_CONST_THIS:
       d_append_string (dpi, " const");
       return;
+    case DEMANGLE_COMPONENT_TRANSACTION_SAFE:
+      d_append_string (dpi, " transaction_safe");
+      return;
     case DEMANGLE_COMPONENT_VENDOR_TYPE_QUAL:
       d_append_char (dpi, ' ');
       d_print_comp (dpi, options, d_right (mod));
@@ -5668,6 +5692,7 @@ d_print_function_type (struct d_print_info *dpi, int options,
 	case DEMANGLE_COMPONENT_CONST_THIS:
 	case DEMANGLE_COMPONENT_REFERENCE_THIS:
 	case DEMANGLE_COMPONENT_RVALUE_REFERENCE_THIS:
+	case DEMANGLE_COMPONENT_TRANSACTION_SAFE:
 	  break;
 	default:
 	  break;
@@ -6200,6 +6225,7 @@ is_ctor_or_dtor (const char *mangled,
 	  case DEMANGLE_COMPONENT_CONST_THIS:
 	  case DEMANGLE_COMPONENT_REFERENCE_THIS:
 	  case DEMANGLE_COMPONENT_RVALUE_REFERENCE_THIS:
+	  case DEMANGLE_COMPONENT_TRANSACTION_SAFE:
 	  default:
 	    dc = NULL;
 	    break;
diff --git a/libiberty/testsuite/demangle-expected b/libiberty/testsuite/demangle-expected
index 5200cb3..041b113 100644
--- a/libiberty/testsuite/demangle-expected
+++ b/libiberty/testsuite/demangle-expected
@@ -4395,3 +4395,6 @@ void IndirectExternCall<void ( regparm<3> stdcall*)(int, int), int>(void ( regpa
 _ZNSt8ios_base7failureB5cxx11C1EPKcRKSt10error_code
 std::ios_base::failure[abi:cxx11]::failure(char const*, std::error_code const&)
 std::ios_base::failure[abi:cxx11]::failure
+--format=gnu-v3
+_Z1fPDxFvvES0_
+f(void (*)() transaction_safe, void (*)() transaction_safe)