re PR tree-optimization/22531 (ICE in mark_sym_for_renaming while compiling dwarf2out.c)

2005-07-17  Daniel Berlin  <dberlin@dberlin.org>

	Fix PR tree-optimization/22531
	* tree-ssa-pre.c (do_eustores):  Make sure LHS is a decl for the
	 moment.

From-SVN: r102119

gcc/ChangeLog

 2005-07-17  Daniel Berlin  <dberlin@dberlin.org>
 
+	Fix PR tree-optimization/22531
+	* tree-ssa-pre.c (do_eustores):  Make sure LHS is a decl for the
+	 moment.
+
+2005-07-17  Daniel Berlin  <dberlin@dberlin.org>
+
 	* tree-promote-statics.c (pass_promote_statics): Change dump file
 	 name.
 

gcc/testsuite/gcc.c-torture/compile/pr22531.c

+typedef struct dw_cfi_oprnd_struct {
+      unsigned long reg;
+} dw_cfa_location;
+void def_cfa_1 (void) {
+      dw_cfa_location loc;
+        loc.reg = loc.reg;
+}

gcc/tree-ssa-pre.c

@@ -2807,6 +2807,7 @@ do_eustores (void)
 
 	      if (NUM_SSA_OPERANDS (found, SSA_OP_VUSE) != 1
 		  || VUSE_OP (VUSE_OPS (found)) != kill
+		  || !DECL_P (TREE_OPERAND (stmt, 0))
 		  || !operand_equal_p (TREE_OPERAND (found, 1), 
 				       TREE_OPERAND (stmt, 0), 0))
 		{