[PATCH, PR 43257] Mangle DECL_ASSEMBLER_NAME early in IPA-SRA

[Martin Jambor]

Hi,

the patch below makes IPA-SRA mangle the assembler name of a function
decl before changing its type to avoid potential conflicts with other
functions.

Bootstrapped and regression tested on x86_64-linux.  OK for trunk?

Thanks,

Martin


2010-03-09  Martin Jambor  <mjambor@suse.cz>

	PR tree-optimization/43257
	* ipa-prop.c (ipa_modify_formal_parameters): Call
	set_decl_assembler_name if not already set.

	* testsuite/g++.dg/torture/pr43257.C: New test.

Index: mine/gcc/ipa-prop.c
===================================================================
--- mine.orig/gcc/ipa-prop.c
+++ mine/gcc/ipa-prop.c
@@ -1497,6 +1497,9 @@ ipa_modify_formal_parameters (tree fndec
   if (!synth_parm_prefix)
     synth_parm_prefix = "SYNTH";
 
+  if (!DECL_ASSEMBLER_NAME_SET_P (fndecl))
+    lang_hooks.set_decl_assembler_name (fndecl);
+
   oparms = ipa_get_vector_of_formal_parms (fndecl);
   orig_type = TREE_TYPE (fndecl);
   old_arg_types = TYPE_ARG_TYPES (orig_type);
Index: mine/gcc/testsuite/g++.dg/torture/pr43257.C
===================================================================
--- /dev/null
+++ mine/gcc/testsuite/g++.dg/torture/pr43257.C
@@ -0,0 +1,30 @@
+/* { dg-do assemble } */
+
+class A {};
+class B {};
+
+static void *func (int n)
+{
+  void *p;
+  if (p == 0) throw ::A ();
+}
+
+static void *func (int n, B const &)
+{
+  try {
+      return func (n);
+  }
+  catch (::A const &) {
+  }
+  return func (n);
+}
+
+void *f1 (int n)
+{
+  return func (n, B());
+}
+
+void *f2 (int n)
+{
+  return func (n, B());
+}