re PR sanitizer/57104 (ICE: in expand_expr_addr_expr_1, at expr.c:7594 with…

re PR sanitizer/57104 (ICE: in expand_expr_addr_expr_1, at expr.c:7594 with -fsanitize=thread and hardreg variable)

	PR tree-optimization/57104
	* tsan.c (instrument_expr): Don't instrument accesses to
	DECL_HARD_REGISTER VAR_DECLs.

	* gcc.dg/pr57104.c: New test.

From-SVN: r198445

gcc/ChangeLog

+2013-04-30  Jakub Jelinek  <jakub@redhat.com>
+
+	PR tree-optimization/57104
+	* tsan.c (instrument_expr): Don't instrument accesses to
+	DECL_HARD_REGISTER VAR_DECLs.
+
 2013-04-30  Richard Biener  <rguenther@suse.de>
 
 	* function.h (loops_for_fn): New inline function.

gcc/testsuite/ChangeLog

+2013-04-30  Jakub Jelinek  <jakub@redhat.com>
+
+	PR tree-optimization/57104
+	* gcc.dg/pr57104.c: New test.
+
 2013-04-29  Uros Bizjak  <ubizjak@gmail.com>
 
 	PR target/44578

gcc/testsuite/gcc.dg/pr57104.c

+/* PR tree-optimization/57104 */
+/* { dg-do compile { target { x86_64-*-linux* && lp64 } } } */
+/* { dg-options "-fsanitize=thread" } */
+
+register int r asm ("r14");
+int v;
+
+int
+foo (void)
+{
+  return r + v;
+}

gcc/tsan.c

@@ -128,7 +128,9 @@ instrument_expr (gimple_stmt_iterator gsi, tree expr, bool is_write)
 	return false;
     }
 
-  if (TREE_READONLY (base))
+  if (TREE_READONLY (base)
+      || (TREE_CODE (base) == VAR_DECL
+	  && DECL_HARD_REGISTER (base)))
     return false;
 
   if (size == 0