re PR tree-optimization/43068 (ICE: in estimate_operator_cost, at…

re PR tree-optimization/43068 (ICE: in estimate_operator_cost, at tree-inline.c:3141 with -freorder-blocks -ftracer)

2010-02-15  Richard Guenther  <rguenther@suse.de>

	PR middle-end/43068
	* cgraphunit.c (thunk_adjust): Skip adjusting by fixed_offset
	if that is zero.

	* g++.dg/torture/pr43068.C: New testcase.

From-SVN: r156770

gcc/ChangeLog

+2010-02-15  Richard Guenther  <rguenther@suse.de>
+
+	PR middle-end/43068
+	* cgraphunit.c (thunk_adjust): Skip adjusting by fixed_offset
+	if that is zero.
+
 2010-02-15  Nick Clifton  <nickc@redhat.com>
 
 	* config/mn10300/mn10300.h (FUNCTION_ARG_REGNO_P): Revert previous

gcc/cgraphunit.c

@@ -1230,7 +1230,8 @@ thunk_adjust (gimple_stmt_iterator * bsi,
   gimple stmt;
   tree ret;
 
-  if (this_adjusting)
+  if (this_adjusting
+      && fixed_offset != 0)
     {
       stmt = gimple_build_assign (ptr,
 				  fold_build2_loc (input_location,
@@ -1315,7 +1316,8 @@ thunk_adjust (gimple_stmt_iterator * bsi,
 			     offsettmp);
     }
 
-  if (!this_adjusting)
+  if (!this_adjusting
+      && fixed_offset != 0)
     /* Adjust the pointer by the constant.  */
     {
       tree ptrtmp;

gcc/testsuite/ChangeLog

+2010-02-15  Richard Guenther  <rguenther@suse.de>
+
+	PR middle-end/43068
+	* g++.dg/torture/pr43068.C: New testcase.
+
 2010-02-14  Volker Reichelt  <reichelt@gcc.gnu.org>
 
 	PR c++/43024

gcc/testsuite/g++.dg/torture/pr43068.C

+/* { dg-do compile } */
+/* { dg-options "-freorder-blocks -ftracer} */
+
+struct A {
+    virtual A *f();
+};
+struct B : virtual A {
+    virtual B *f();
+};
+B *B::f() { return 0; }