re PR target/50092 (internal compiler error: in elimination_costs_in_insn, at reload1.c:3633)

	PR target/50092
	* config/i386/i386.c (assign_386_stack_local): Call validize_mem
	on the result before returning it.

	* gcc.dg/torture/pr50092.c: New test.

From-SVN: r177859

gcc/ChangeLog

 2011-08-18  Jakub Jelinek  <jakub@redhat.com>
 
+	PR target/50092
+	* config/i386/i386.c (assign_386_stack_local): Call validize_mem
+	on the result before returning it.
+
 	PR debug/50017
 	* tree-vect-stmts.c (vect_finish_stmt_generation): If gsi_stmt (*gsi)
 	is a debug stmt, use location of the first non-debug stmt after it.

gcc/config/i386/i386.c

@@ -21787,7 +21787,7 @@ assign_386_stack_local (enum machine_mode mode, enum ix86_stack_slot n)
 
   for (s = ix86_stack_locals; s; s = s->next)
     if (s->mode == mode && s->n == n)
-      return copy_rtx (s->rtl);
+      return validize_mem (copy_rtx (s->rtl));
 
   s = ggc_alloc_stack_local_entry ();
   s->n = n;
@@ -21796,7 +21796,7 @@ assign_386_stack_local (enum machine_mode mode, enum ix86_stack_slot n)
 
   s->next = ix86_stack_locals;
   ix86_stack_locals = s;
-  return s->rtl;
+  return validize_mem (s->rtl);
 }
 
 /* Calculate the length of the memory address in the instruction encoding.

gcc/testsuite/ChangeLog

+2011-08-18  Jakub Jelinek  <jakub@redhat.com>
+
+	PR target/50092
+	* gcc.dg/torture/pr50092.c: New test.
+
 2011-08-18  Tobias Burnus  <burnus@net-b.de>
 
 	PR fortran/50109

gcc/testsuite/gcc.dg/torture/pr50092.c

+/* PR target/50092 */
+/* { dg-do compile { target lp64 } } */
+
+volatile int v;
+
+void bar (long double);
+void baz (_Complex long double *);
+
+void
+foo (void)
+{
+  _Complex long double w[100000000];
+  bar ((long double) v / 2147483648.0);
+  baz (w);
+}