From 16df8078b8ea2cf3ce37f47e62cdc66c69fe6c70 Mon Sep 17 00:00:00 2001
From: Steven Bosscher <steven@gcc.gnu.org>
Date: Wed, 24 Nov 2004 11:41:38 +0000
Subject: expr.c (expand_expr_real_1): Remove cases for EXIT_BLOCK_EXPR and
 LABELED_BLOCK_EXPR.

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.

From-SVN: r91149
---
 gcc/java/java-gimplify.c | 43 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 43 insertions(+)

(limited to 'gcc/java/java-gimplify.c')

diff --git a/gcc/java/java-gimplify.c b/gcc/java/java-gimplify.c
index c8130a7..51fbb84 100644
--- a/gcc/java/java-gimplify.c
+++ b/gcc/java/java-gimplify.c
@@ -32,6 +32,8 @@ The Free Software Foundation is independent of Sun Microsystems, Inc.  */
 #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 *pre_p ATTRIBUTE_UNUSED,
       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 *pre_p ATTRIBUTE_UNUSED,
   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.  */
-- 
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