re PR c++/30168 (C++ constructors can cause invalid gimple to happen with complex typed variables)

2006-12-21  Andrew Pinski  <pinskia@gmail.com>

        PR C++/30168
        * optimize.c (update_cloned_parm): Copy DECL_GIMPLE_REG_P also.

2006-12-21  Andrew Pinski  <pinskia@gmail.com>

        PR C++/30168
        * g++.dg/opt/complex6.C: New test.

From-SVN: r120144

gcc/cp/ChangeLog

+2006-12-21  Andrew Pinski  <pinskia@gmail.com>
+
+	PR C++/30168
+	* optimize.c (update_cloned_parm): Copy DECL_GIMPLE_REG_P also.
+
 2006-12-22  Kazu Hirata  <kazu@codesourcery.com>
 
 	* decl.c: Fix a coment typo.

gcc/cp/optimize.c

@@ -69,6 +69,8 @@ update_cloned_parm (tree parm, tree cloned_parm, bool first)
   DECL_NAME (cloned_parm) = DECL_NAME (parm);
   DECL_SOURCE_LOCATION (cloned_parm) = DECL_SOURCE_LOCATION (parm);
   TREE_TYPE (cloned_parm) = TREE_TYPE (parm);
+
+  DECL_GIMPLE_REG_P (cloned_parm) = DECL_GIMPLE_REG_P (parm);
 }
 
 /* FN is a function that has a complete body.  Clone the body as

gcc/testsuite/ChangeLog

+2006-12-21  Andrew Pinski  <pinskia@gmail.com>
+
+	PR C++/30168
+	* g++.dg/opt/complex6.C: New test.
+
 2006-12-22  Ben Elliston  <bje@au.ibm.com>
 
 	* lib/gcc-dg.exp (gcc-dg-prune): Return "::unsupported::memory

gcc/testsuite/g++.dg/opt/complex6.C

+// PR 30168
+// { dg-do compile }
+// { dg-options "-O2" }
+
+struct aaa
+{
+      aaa(_Complex float __z) ;
+      _Complex float _M_value;
+};
+aaa::aaa(_Complex float __z)
+{
+  __z*=2.0f;
+  _M_value = __z;
+}