re PR debug/64511 (ICE at -O3 with -g enabled on x86_64-linux-gnu)

	PR debug/64511
	* simplify-rtx.c (simplify_relational_operation_1): Don't try to
	optimize (eq/ne (and (side_effects) (const_int 0)) (const_int 0))
	into (eq/ne (and (not (side_effects)) (const_int 0)) (const_int 0)).

	* gcc.dg/pr64511.c: New test.

From-SVN: r219974

gcc/ChangeLog

 2015-01-21  Jakub Jelinek  <jakub@redhat.com>
 
+	PR debug/64511
+	* simplify-rtx.c (simplify_relational_operation_1): Don't try to
+	optimize (eq/ne (and (side_effects) (const_int 0)) (const_int 0))
+	into (eq/ne (and (not (side_effects)) (const_int 0)) (const_int 0)).
+
 	PR sanitizer/64706
 	* doc/invoke.texi (-fsanitize=vptr): Document.
 

gcc/simplify-rtx.c

@@ -4589,7 +4589,8 @@ simplify_relational_operation_1 (enum rtx_code code, machine_mode mode,
   if ((code == EQ || code == NE)
       && op0code == AND
       && rtx_equal_p (XEXP (op0, 0), op1)
-      && !side_effects_p (op1))
+      && !side_effects_p (op1)
+      && op1 != CONST0_RTX (cmp_mode))
     {
       rtx not_y = simplify_gen_unary (NOT, cmp_mode, XEXP (op0, 1), cmp_mode);
       rtx lhs = simplify_gen_binary (AND, cmp_mode, not_y, XEXP (op0, 0));
@@ -4602,7 +4603,8 @@ simplify_relational_operation_1 (enum rtx_code code, machine_mode mode,
   if ((code == EQ || code == NE)
       && op0code == AND
       && rtx_equal_p (XEXP (op0, 1), op1)
-      && !side_effects_p (op1))
+      && !side_effects_p (op1)
+      && op1 != CONST0_RTX (cmp_mode))
     {
       rtx not_x = simplify_gen_unary (NOT, cmp_mode, XEXP (op0, 0), cmp_mode);
       rtx lhs = simplify_gen_binary (AND, cmp_mode, not_x, XEXP (op0, 1));

gcc/testsuite/ChangeLog

 2015-01-21  Jakub Jelinek  <jakub@redhat.com>
 
+	PR debug/64511
+	* gcc.dg/pr64511.c: New test.
+
 	PR rtl-optimization/62078
 	* g++.dg/opt/pr62078.C: New test.
 

gcc/testsuite/gcc.dg/pr64511.c

+/* PR debug/64511 */
+/* { dg-do compile } */
+/* { dg-options "-O3 -g" } */
+
+int a, c;
+int *volatile b;
+
+void
+foo (int p)
+{
+  int d;
+  int *e = &a;
+  d = ((p == 0) & *e) != 0;
+  b = e;
+  for (; c;)
+    ;
+}
+
+void
+bar (void)
+{
+  foo (1);
+}