re PR c++/55619 (Chromium build fails with: error: memory input is not directly addressable)

	PR c++/55619
	* semantics.c (finish_asm_stmt): Don't call decay_conversion
	on input operands that can be only in memory.

	* g++.dg/ext/asm12.C: New test.

From-SVN: r194404

gcc/cp/ChangeLog

+2012-12-11  Jakub Jelinek  <jakub@redhat.com>
+
+	PR c++/55619
+	* semantics.c (finish_asm_stmt): Don't call decay_conversion
+	on input operands that can be only in memory.
+
 2012-12-10  Eric Botcazou  <ebotcazou@adacore.com>
 
 	* Make-lang.in (cp/typeck.o): Add dependency on $(PARAMS_H).

gcc/cp/semantics.c

@@ -1369,7 +1369,15 @@ finish_asm_stmt (int volatile_p, tree string, tree output_operands,
       for (i = 0, t = input_operands; t; ++i, t = TREE_CHAIN (t))
 	{
 	  constraint = TREE_STRING_POINTER (TREE_VALUE (TREE_PURPOSE (t)));
-	  operand = decay_conversion (TREE_VALUE (t), tf_warning_or_error);
+	  bool constraint_parsed
+	    = parse_input_constraint (&constraint, i, ninputs, noutputs, 0,   
+				      oconstraints, &allows_mem, &allows_reg);
+	  /* If the operand is going to end up in memory, don't call
+	     decay_conversion.  */
+	  if (constraint_parsed && !allows_reg && allows_mem)
+	    operand = mark_lvalue_use (TREE_VALUE (t));
+	  else
+	    operand = decay_conversion (TREE_VALUE (t), tf_warning_or_error);
 
 	  /* If the type of the operand hasn't been determined (e.g.,
 	     because it involves an overloaded function), then issue
@@ -1382,8 +1390,7 @@ finish_asm_stmt (int volatile_p, tree string, tree output_operands,
 	      operand = error_mark_node;
 	    }
 
-	  if (parse_input_constraint (&constraint, i, ninputs, noutputs, 0,
-				      oconstraints, &allows_mem, &allows_reg))
+	  if (constraint_parsed)
 	    {
 	      /* If the operand is going to end up in memory,
 		 mark it addressable.  */

gcc/testsuite/ChangeLog

 2012-12-11  Jakub Jelinek  <jakub@redhat.com>
 
+	PR c++/55619
+	* g++.dg/ext/asm12.C: New test.
+
 	PR tree-optimization/54570
 	* gcc.dg/builtin-object-size-8.c: Xfail.
 	* gcc.dg/builtin-object-size-13.c: New test.

gcc/testsuite/g++.dg/ext/asm12.C

+// PR c++/55619
+// { dg-do compile }
+
+typedef int V __attribute__ ((vector_size (4 * sizeof (int))));
+
+static const V C = { 0x201, 0, 0, 0 };
+static const int D = 0x201;
+
+void
+f ()
+{
+  __asm volatile ("" : : "m" (C));
+  __asm volatile ("" : : "m" (D));
+}