re PR tree-optimization/21532 (ICE caused by PRE dead instruction removal)

2005-05-12  Daniel Berlin  <dberlin@dberlin.org>

	Fix PR tree-optimization/21532
	* tree-ssa-pre.c (create_expression_by_pieces): stmt
	needs to go onto the inserted_exprs list.

From-SVN: r99617

gcc/ChangeLog

+2005-05-12  Daniel Berlin  <dberlin@dberlin.org>
+	
+	Fix PR tree-optimization/21532
+	* tree-ssa-pre.c (create_expression_by_pieces): stmt
+	needs to go onto the inserted_exprs list.
+
 2005-05-12  Ian Lance Taylor  <ian@airs.com>
 
 	* c-common.h (statement_code_p): Don't declare.

gcc/tree-ssa-pre.c

@@ -1369,6 +1369,8 @@ create_expression_by_pieces (basic_block block, tree expr, tree stmts)
 	  tree forcedname = TREE_OPERAND (stmt, 0);
 	  tree forcedexpr = TREE_OPERAND (stmt, 1);
 	  tree val = vn_lookup_or_add (forcedexpr, NULL);
+	  
+	  VEC_safe_push (tree, heap, inserted_exprs, stmt);
 	  vn_add (forcedname, val, NULL);
 	  bitmap_value_replace_in_set (NEW_SETS (block), forcedname);
 	  bitmap_value_replace_in_set (AVAIL_OUT (block), forcedname);