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Make EXIT_BLOCK_EXPR and LABELED_BLOCK_EXPR Java specific nodes


Hi,

These two nodes from the subject are only used by Java, so
I've turned them into language specific tree nodes.

Bootstrapped and tested c,c++,java on x86_64-suse-linux-gnu.
OK?

Gr.
Steven

gcc/
	* expr.c (expand_expr_real_1): Remove cases for EXIT_BLOCK_EXPR 
	and LABELED_BLOCK_EXPR.
	* gimplify.c (gimplify_labeled_block_expr): Remove.
	(gimplify_exit_block_expr): Remove.
	(gimplify_expr): Don't call them.
	* tree-inline.c (copy_body_r): Don't handle EXIT_BLOCK_EXPR
	and LABELED_BLOCK_EXPR.
	(estimate_num_insns_1): Likewise.
	(walk_tree): Likewise.
	* tree-pretty-print.c (dump_generic_node): Don't handle
	EXIT_BLOCK_EXPR and LABELED_BLOCK_EXPR.
	* tree.def (EXIT_BLOCK_EXPR): Moved to java-tree.def.
	(LABELED_BLOCK_EXPR): Likewise.
	* tree.h (LABELED_BLOCK_LABEL): Moved to java-tree.h.
	(LABELED_BLOCK_BODY): Likewise.
	(EXIT_BLOCK_LABELED_BLOCK): Likewise.
	(EXIT_BLOCK_RETURN): Removed.

java/
	* java-gimplify.c (java_gimplify_labeled_block_expr): New function.
	(java_gimplify_exit_block_expr): New function.
	(java_gimplify_expr): Use them to gimplify EXIT_BLOCK_EXPR and
	LABELED_BLOCK_EXPR.
	* java-tree.def (LABELED_BLOCK_EXPR): Moved from tree.def.
	(EXIT_BLOCK_EXPR): Likewise.
	* java-tree.h (LABELED_BLOCK_LABEL): Moved from tree.h.
	(LABELED_BLOCK_BODY): Likewise.
	(EXIT_BLOCK_LABELED_BLOCK): Likewise.
	* jcf-write.c (generate_bytecode_insns): Don't handle the unused
	EXIT_BLOCK_RETURN operand.  Use EXIT_BLOCK_LABELED_BLOCK instead of
	TREE_OPERAND.
	* lang.c (java_tree_inlining_walk_subtrees): Handle EXIT_BLOCK_EXPR.
	(java_dump_tree): Use LABELED_BLOCK_LABEL, LABELED_BLOCK_BODY, and
	EXIT_BLOCK_LABELED_BLOCK instead of TREE_OPERAND.  Don't handle the
	second operand of EXIT_BLOCK_EXPR.
	* parse.y (find_expr_with_wfl): Use LABELED_BLOCK_BODY instead of
	TREE_OPERAND.
	(build_bc_statement): Use build1 to build EXIT_BLOCK_EXPR nodes.

Index: expr.c
===================================================================
RCS file: /cvs/gcc/gcc/gcc/expr.c,v
retrieving revision 1.741
diff -u -3 -p -r1.741 expr.c
--- expr.c	14 Nov 2004 13:05:19 -0000	1.741
+++ expr.c	18 Nov 2004 22:58:23 -0000
@@ -8137,8 +8137,6 @@ expand_expr_real_1 (tree exp, rtx target
     case POSTDECREMENT_EXPR:
     case LOOP_EXPR:
     case EXIT_EXPR:
-    case LABELED_BLOCK_EXPR:
-    case EXIT_BLOCK_EXPR:
     case TRUTH_ANDIF_EXPR:
     case TRUTH_ORIF_EXPR:
       /* Lowered by gimplify.c.  */
Index: gimplify.c
===================================================================
RCS file: /cvs/gcc/gcc/gcc/gimplify.c,v
retrieving revision 2.85
diff -u -3 -p -r2.85 gimplify.c
--- gimplify.c	13 Nov 2004 21:11:04 -0000	2.85
+++ gimplify.c	18 Nov 2004 22:58:24 -0000
@@ -1210,43 +1210,6 @@ gimplify_case_label_expr (tree *expr_p)
   return GS_ALL_DONE;
 }
 
-/* Gimplify a LABELED_BLOCK_EXPR into a LABEL_EXPR following
-   a (possibly empty) body.  */
-
-static enum gimplify_status
-gimplify_labeled_block_expr (tree *expr_p)
-{
-  tree body = LABELED_BLOCK_BODY (*expr_p);
-  tree label = LABELED_BLOCK_LABEL (*expr_p);
-  tree t;
-
-  DECL_CONTEXT (label) = current_function_decl;
-  t = build (LABEL_EXPR, void_type_node, label);
-  if (body != NULL_TREE)
-    t = build (COMPOUND_EXPR, void_type_node, body, t);
-  *expr_p = t;
-
-  return GS_OK;
-}
-
-/* Gimplify a EXIT_BLOCK_EXPR into a GOTO_EXPR.  */
-
-static enum gimplify_status
-gimplify_exit_block_expr (tree *expr_p)
-{
-  tree labeled_block = TREE_OPERAND (*expr_p, 0);
-  tree label;
-
-  /* First operand must be a LABELED_BLOCK_EXPR, which should
-     already be lowered (or partially lowered) when we get here.  */
-  gcc_assert (TREE_CODE (labeled_block) == LABELED_BLOCK_EXPR);
-
-  label = LABELED_BLOCK_LABEL (labeled_block);
-  *expr_p = build1 (GOTO_EXPR, void_type_node, label);
-
-  return GS_OK;
-}
-
 /* Build a GOTO to the LABEL_DECL pointed to by LABEL_P, building it first
    if necessary.  */
 
@@ -3703,14 +3666,6 @@ gimplify_expr (tree *expr_p, tree *pre_p
 	  ret = gimplify_switch_expr (expr_p, pre_p);
 	  break;
 
-	case LABELED_BLOCK_EXPR:
-	  ret = gimplify_labeled_block_expr (expr_p);
-	  break;
-
-	case EXIT_BLOCK_EXPR:
-	  ret = gimplify_exit_block_expr (expr_p);
-	  break;
-
 	case EXIT_EXPR:
 	  ret = gimplify_exit_expr (expr_p);
 	  break;
Index: tree-inline.c
===================================================================
RCS file: /cvs/gcc/gcc/gcc/tree-inline.c,v
retrieving revision 1.150
diff -u -3 -p -r1.150 tree-inline.c
--- tree-inline.c	8 Nov 2004 22:40:08 -0000	1.150
+++ tree-inline.c	18 Nov 2004 22:58:24 -0000
@@ -512,25 +512,6 @@ copy_body_r (tree *tp, int *walk_subtree
     remap_save_expr (tp, id->decl_map, walk_subtrees);
   else if (TREE_CODE (*tp) == BIND_EXPR)
     copy_bind_expr (tp, walk_subtrees, id);
-  else if (TREE_CODE (*tp) == LABELED_BLOCK_EXPR)
-    {
-      /* We need a new copy of this labeled block; the EXIT_BLOCK_EXPR
-         will refer to it, so save a copy ready for remapping.  We
-         save it in the decl_map, although it isn't a decl.  */
-      tree new_block = copy_node (*tp);
-      insert_decl_map (id, *tp, new_block);
-      *tp = new_block;
-    }
-  else if (TREE_CODE (*tp) == EXIT_BLOCK_EXPR)
-    {
-      splay_tree_node n
-	= splay_tree_lookup (id->decl_map,
-			     (splay_tree_key) TREE_OPERAND (*tp, 0));
-      /* We _must_ have seen the enclosing LABELED_BLOCK_EXPR.  */
-      gcc_assert (n);
-      *tp = copy_node (*tp);
-      TREE_OPERAND (*tp, 0) = (tree) n->value;
-    }
   /* Types may need remapping as well.  */
   else if (TYPE_P (*tp))
     *tp = remap_type (*tp, id);
@@ -1174,14 +1155,12 @@ estimate_num_insns_1 (tree *tp, int *wal
     case FILTER_EXPR: /* ??? */
     case COMPOUND_EXPR:
     case BIND_EXPR:
-    case LABELED_BLOCK_EXPR:
     case WITH_CLEANUP_EXPR:
     case NOP_EXPR:
     case VIEW_CONVERT_EXPR:
     case SAVE_EXPR:
     case ADDR_EXPR:
     case COMPLEX_EXPR:
-    case EXIT_BLOCK_EXPR:
     case CASE_LABEL_EXPR:
     case SSA_NAME:
     case CATCH_EXPR:
@@ -2080,8 +2059,7 @@ walk_tree (tree *tp, walk_tree_fn func, 
 	}
     }
 
-  else if (code != EXIT_BLOCK_EXPR
-	   && code != SAVE_EXPR
+  else if (code != SAVE_EXPR
 	   && code != BIND_EXPR
 	   && IS_EXPR_CODE_CLASS (TREE_CODE_CLASS (code)))
     {
@@ -2171,9 +2149,6 @@ walk_tree (tree *tp, walk_tree_fn func, 
 	case CONSTRUCTOR:
 	  WALK_SUBTREE_TAIL (CONSTRUCTOR_ELTS (*tp));
 
-	case EXIT_BLOCK_EXPR:
-	  WALK_SUBTREE_TAIL (TREE_OPERAND (*tp, 1));
-
 	case SAVE_EXPR:
 	  WALK_SUBTREE_TAIL (TREE_OPERAND (*tp, 0));
 
Index: tree-pretty-print.c
===================================================================
RCS file: /cvs/gcc/gcc/gcc/tree-pretty-print.c,v
retrieving revision 2.47
diff -u -3 -p -r2.47 tree-pretty-print.c
--- tree-pretty-print.c	27 Oct 2004 17:45:20 -0000	2.47
+++ tree-pretty-print.c	18 Nov 2004 22:58:24 -0000
@@ -1247,48 +1247,6 @@ dump_generic_node (pretty_printer *buffe
 	pp_string (buffer, " [non-local]");
       break;
 
-    case LABELED_BLOCK_EXPR:
-      op0 = LABELED_BLOCK_LABEL (node);
-      /* If this is for break or continue, don't bother printing it.  */
-      if (DECL_NAME (op0))
-	{
-	  const char *name = IDENTIFIER_POINTER (DECL_NAME (op0));
-	  if (strcmp (name, "break") == 0
-	      || strcmp (name, "continue") == 0)
-	    {
-	      dump_generic_node (buffer, LABELED_BLOCK_BODY (node), spc, flags, false);
-	      break;
-	    }
-	}
-      dump_generic_node (buffer, LABELED_BLOCK_LABEL (node), spc, flags, false);
-      pp_string (buffer, ": {");
-      if (!(flags & TDF_SLIM))
-	newline_and_indent (buffer, spc+2);
-      dump_generic_node (buffer, LABELED_BLOCK_BODY (node), spc+2, flags, true);
-      if (!flags)
-	newline_and_indent (buffer, spc);
-      pp_character (buffer, '}');
-      is_expr = false;
-      break;
-
-    case EXIT_BLOCK_EXPR:
-      op0 = LABELED_BLOCK_LABEL (EXIT_BLOCK_LABELED_BLOCK (node));
-      /* If this is for a break or continue, print it accordingly.  */
-      if (DECL_NAME (op0))
-	{
-	  const char *name = IDENTIFIER_POINTER (DECL_NAME (op0));
-	  if (strcmp (name, "break") == 0
-	      || strcmp (name, "continue") == 0)
-	    {
-	      pp_string (buffer, name);
-	      break;
-	    }
-	}
-      pp_string (buffer, "<<<exit block ");
-      dump_generic_node (buffer, op0, spc, flags, false);
-      pp_string (buffer, ">>>");
-      break;
-
     case EXC_PTR_EXPR:
       pp_string (buffer, "<<<exception object>>>");
       break;
Index: tree.def
===================================================================
RCS file: /cvs/gcc/gcc/gcc/tree.def,v
retrieving revision 1.103
diff -u -3 -p -r1.103 tree.def
--- tree.def	28 Sep 2004 13:14:28 -0000	1.103
+++ tree.def	18 Nov 2004 22:58:24 -0000
@@ -499,11 +499,6 @@ DEFTREECODE (VEC_COND_EXPR, "vec_cond_ex
    nodes for the function.  */
 DEFTREECODE (BIND_EXPR, "bind_expr", tcc_expression, 3)
 
-/* A labeled block. Operand 0 is the label that will be generated to
-   mark the end of the block.
-   Operand 1 is the labeled block body.  */
-DEFTREECODE (LABELED_BLOCK_EXPR, "labeled_block_expr", tcc_expression, 2)
-
 /* Function call.  Operand 0 is the function.
    Operand 1 is the argument list, a list of expressions
    made out of a chain of TREE_LIST nodes.
@@ -806,11 +801,6 @@ DEFTREECODE (EXIT_EXPR, "exit_expr", tcc
    The type should be void and the value should be ignored.  */
 DEFTREECODE (LOOP_EXPR, "loop_expr", tcc_statement, 1)
 
-/* Exit a labeled block, possibly returning a value.  Operand 0 is a
-   LABELED_BLOCK_EXPR to exit.  Operand 1 is the value to return. It
-   may be left null.  */
-DEFTREECODE (EXIT_BLOCK_EXPR, "exit_block_expr", tcc_statement, 2)
-
 /* Switch expression.
 
    TREE_TYPE is the original type of the condition, before any
Index: tree.h
===================================================================
RCS file: /cvs/gcc/gcc/gcc/tree.h,v
retrieving revision 1.657
diff -u -3 -p -r1.657 tree.h
--- tree.h	17 Nov 2004 22:06:00 -0000	1.657
+++ tree.h	18 Nov 2004 22:58:25 -0000
@@ -1157,17 +1157,6 @@ struct tree_vec GTY(())
 #define REF_ORIGINAL(NODE) TREE_CHAIN (TREE_CHECK3 (NODE, 	\
 	INDIRECT_REF, ALIGN_INDIRECT_REF, MISALIGNED_INDIRECT_REF))
 
-/* In a LABELED_BLOCK_EXPR node.  */
-#define LABELED_BLOCK_LABEL(NODE) \
-  TREE_OPERAND_CHECK_CODE (NODE, LABELED_BLOCK_EXPR, 0)
-#define LABELED_BLOCK_BODY(NODE) \
-  TREE_OPERAND_CHECK_CODE (NODE, LABELED_BLOCK_EXPR, 1)
-
-/* In an EXIT_BLOCK_EXPR node.  */
-#define EXIT_BLOCK_LABELED_BLOCK(NODE) \
-  TREE_OPERAND_CHECK_CODE (NODE, EXIT_BLOCK_EXPR, 0)
-#define EXIT_BLOCK_RETURN(NODE) TREE_OPERAND_CHECK_CODE (NODE, EXIT_BLOCK_EXPR, 1)
-
 /* In a LOOP_EXPR node.  */
 #define LOOP_EXPR_BODY(NODE) TREE_OPERAND_CHECK_CODE (NODE, LOOP_EXPR, 0)
 
Index: java/java-gimplify.c
===================================================================
RCS file: /cvs/gcc/gcc/gcc/java/java-gimplify.c,v
retrieving revision 1.16
diff -u -3 -p -r1.16 java-gimplify.c
--- java/java-gimplify.c	30 Sep 2004 02:16:45 -0000	1.16
+++ java/java-gimplify.c	18 Nov 2004 22:58:28 -0000
@@ -32,6 +32,8 @@ The Free Software Foundation is independ
 #include "tree-gimple.h"
 #include "toplev.h"
 
+static tree java_gimplify_labeled_block_expr (tree);
+static tree java_gimplify_exit_block_expr (tree);
 static tree java_gimplify_case_expr (tree);
 static tree java_gimplify_default_expr (tree);
 static tree java_gimplify_block (tree);
@@ -79,6 +81,14 @@ java_gimplify_expr (tree *expr_p, tree *
       SET_EXPR_LOCATION (*expr_p, input_location);
       break;
 
+    case LABELED_BLOCK_EXPR:
+      *expr_p = java_gimplify_labeled_block_expr (*expr_p);
+      break;
+
+    case EXIT_BLOCK_EXPR:
+      *expr_p = java_gimplify_exit_block_expr (*expr_p);
+      break;
+
     case CASE_EXPR:
       *expr_p = java_gimplify_case_expr (*expr_p);
       break;
@@ -164,6 +174,39 @@ java_gimplify_expr (tree *expr_p, tree *
   return GS_OK;
 }
 
+/* Gimplify a LABELED_BLOCK_EXPR into a LABEL_EXPR following
+   a (possibly empty) body.  */
+
+static tree
+java_gimplify_labeled_block_expr (tree expr)
+{
+  tree body = LABELED_BLOCK_BODY (expr);
+  tree label = LABELED_BLOCK_LABEL (expr);
+  tree t;
+
+  DECL_CONTEXT (label) = current_function_decl;
+  t = build (LABEL_EXPR, void_type_node, label);
+  if (body != NULL_TREE)
+    t = build (COMPOUND_EXPR, void_type_node, body, t);
+  return t;
+}
+
+/* Gimplify a EXIT_BLOCK_EXPR into a GOTO_EXPR.  */
+
+static tree
+java_gimplify_exit_block_expr (tree expr)
+{
+  tree labeled_block = EXIT_BLOCK_LABELED_BLOCK (expr);
+  tree label;
+
+  /* First operand must be a LABELED_BLOCK_EXPR, which should
+     already be lowered (or partially lowered) when we get here.  */
+  gcc_assert (TREE_CODE (labeled_block) == LABELED_BLOCK_EXPR);
+
+  label = LABELED_BLOCK_LABEL (labeled_block);
+  return build1 (GOTO_EXPR, void_type_node, label);
+}
+
 /* This is specific to the bytecode compiler.  If a variable has
    LOCAL_SLOT_P set, replace an assignment to it with an assignment to
    the corresponding variable that holds all its aliases.  */
Index: java/java-tree.def
===================================================================
RCS file: /cvs/gcc/gcc/gcc/java/java-tree.def,v
retrieving revision 1.20
diff -u -3 -p -r1.20 java-tree.def
--- java/java-tree.def	30 Sep 2004 02:16:00 -0000	1.20
+++ java/java-tree.def	18 Nov 2004 22:58:28 -0000
@@ -41,6 +41,14 @@ DEFTREECODE (NEW_CLASS_EXPR, "new_class_
 /* Defines `this' as an expression.  */
 DEFTREECODE (THIS_EXPR, "this", tcc_unary, 0)
 
+/* A labeled block. Operand 0 is the label that will be generated to
+   mark the end of the block.  Operand 1 is the labeled block body.  */
+DEFTREECODE (LABELED_BLOCK_EXPR, "labeled_block_expr", tcc_expression, 2)
+
+/* Exit a labeled block, possibly returning a value.  Operand 0 is a
+   LABELED_BLOCK_EXPR to exit.  */
+DEFTREECODE (EXIT_BLOCK_EXPR, "exit_block_expr", tcc_statement, 1)
+
 /* Case statement expression.
    Operand 1 is the case value.  */
 DEFTREECODE (CASE_EXPR, "case", tcc_expression, 1)
Index: java/java-tree.h
===================================================================
RCS file: /cvs/gcc/gcc/gcc/java/java-tree.h,v
retrieving revision 1.220
diff -u -3 -p -r1.220 java-tree.h
--- java/java-tree.h	5 Oct 2004 17:07:13 -0000	1.220
+++ java/java-tree.h	18 Nov 2004 22:58:29 -0000
@@ -1815,6 +1815,16 @@ enum
 
 #undef DEBUG_JAVA_BINDING_LEVELS
 
+/* In a LABELED_BLOCK_EXPR node.  */
+#define LABELED_BLOCK_LABEL(NODE) \
+  TREE_OPERAND_CHECK_CODE (NODE, LABELED_BLOCK_EXPR, 0)
+#define LABELED_BLOCK_BODY(NODE) \
+  TREE_OPERAND_CHECK_CODE (NODE, LABELED_BLOCK_EXPR, 1)
+
+/* In an EXIT_BLOCK_EXPR node.  */
+#define EXIT_BLOCK_LABELED_BLOCK(NODE) \
+  TREE_OPERAND_CHECK_CODE (NODE, EXIT_BLOCK_EXPR, 0)
+
 /* In an EXPR_WITH_FILE_LOCATION node.  */
 #define EXPR_WFL_EMIT_LINE_NOTE(NODE) \
   (EXPR_WITH_FILE_LOCATION_CHECK (NODE)->common.public_flag)
Index: java/jcf-write.c
===================================================================
RCS file: /cvs/gcc/gcc/gcc/java/jcf-write.c,v
retrieving revision 1.157
diff -u -3 -p -r1.157 jcf-write.c
--- java/jcf-write.c	30 Sep 2004 02:16:45 -0000	1.157
+++ java/jcf-write.c	18 Nov 2004 22:58:29 -0000
@@ -1898,8 +1898,7 @@ generate_bytecode_insns (tree exp, int t
     case EXIT_BLOCK_EXPR:
       {
 	struct jcf_block *label = state->labeled_blocks;
-	if (TREE_OPERAND (exp, 1) != NULL) goto notimpl;
-	while (label->u.labeled_block != TREE_OPERAND (exp, 0))
+	while (label->u.labeled_block != EXIT_BLOCK_LABELED_BLOCK (exp))
 	  label = label->next;
 	call_cleanups (label, state);
 	emit_goto (label, state);
@@ -2653,7 +2652,6 @@ generate_bytecode_insns (tree exp, int t
 	  }
       }
       /* fall through */
-    notimpl:
     default:
       error("internal error in generate_bytecode_insn - tree code not implemented: %s",
 	    tree_code_name [(int) TREE_CODE (exp)]);
Index: java/lang.c
===================================================================
RCS file: /cvs/gcc/gcc/gcc/java/lang.c,v
retrieving revision 1.162
diff -u -3 -p -r1.162 lang.c
--- java/lang.c	15 Oct 2004 18:43:10 -0000	1.162
+++ java/lang.c	18 Nov 2004 22:58:29 -0000
@@ -731,6 +731,10 @@ java_tree_inlining_walk_subtrees (tree *
       WALK_SUBTREE (BLOCK_EXPR_BODY (t));
       return NULL_TREE;
 
+    case EXIT_BLOCK_EXPR:
+      *subtrees = 0;
+      return NULL_TREE;
+
     default:
       return NULL_TREE;
     }
@@ -921,13 +925,12 @@ java_dump_tree (void *dump_info, tree t)
       return true;
 
     case LABELED_BLOCK_EXPR:
-      dump_child ("label", TREE_OPERAND (t, 0));
-      dump_child ("block", TREE_OPERAND (t, 1));
+      dump_child ("label", LABELED_BLOCK_LABEL (t));
+      dump_child ("block", LABELED_BLOCK_BODY (t));
       return true;
 
     case EXIT_BLOCK_EXPR:
-      dump_child ("block", TREE_OPERAND (t, 0));
-      dump_child ("val", TREE_OPERAND (t, 1));
+      dump_child ("block", EXIT_BLOCK_LABELED_BLOCK (t));
       return true;
 
     case BLOCK:
Index: java/parse.y
===================================================================
RCS file: /cvs/gcc/gcc/gcc/java/parse.y,v
retrieving revision 1.520
diff -u -3 -p -r1.520 parse.y
--- java/parse.y	9 Nov 2004 14:33:32 -0000	1.520
+++ java/parse.y	18 Nov 2004 22:58:31 -0000
@@ -3255,7 +3255,7 @@ find_expr_with_wfl (tree node)
 	  continue;
 
 	case LABELED_BLOCK_EXPR:
-	  node = TREE_OPERAND (node, 1);
+	  node = LABELED_BLOCK_BODY (node);
 	  continue;
 
 	default:
@@ -11747,8 +11747,6 @@ java_complete_lhs (tree node)
       return node;
 
     case EXIT_BLOCK_EXPR:
-      /* We don't complete operand 1, because it's the return value of
-         the EXIT_BLOCK_EXPR which doesn't exist it Java */
       return patch_bc_statement (node);
 
     case CASE_EXPR:
@@ -15269,8 +15267,7 @@ build_bc_statement (int location, int is
     }
   /* Unlabeled break/continue will be handled during the
      break/continue patch operation */
-  break_continue = build2 (EXIT_BLOCK_EXPR, NULL_TREE,
-			   label_block_expr, NULL_TREE);
+  break_continue = build1 (EXIT_BLOCK_EXPR, NULL_TREE, label_block_expr);
 
   IS_BREAK_STMT_P (break_continue) = is_break;
   TREE_SIDE_EFFECTS (break_continue) = 1;


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