re PR debug/50827 (ICE: RTL check: expected elt 0 type 'e' or 'u', have '0' (rtx…

re PR debug/50827 (ICE: RTL check: expected elt 0 type 'e' or 'u', have '0' (rtx entry_value) in loc_cmp, at var-tracking.c:3011)

	PR debug/50827
	* var-tracking.c (loc_cmp): For ENTRY_VALUEs use ENTRY_VALUE_EXP
	macro instead of XEXP.

	* gcc.dg/pr50827.c: New test.

From-SVN: r181597

gcc/ChangeLog

+2011-11-21  Jakub Jelinek  <jakub@redhat.com>
+
+	PR debug/50827
+	* var-tracking.c (loc_cmp): For ENTRY_VALUEs use ENTRY_VALUE_EXP
+	macro instead of XEXP.
+
 2011-11-21  Andreas Tobler  <andreast@fgznet.ch>
 
 	* configure: Regenerate.

gcc/testsuite/ChangeLog

+2011-11-21  Jakub Jelinek  <jakub@redhat.com>
+
+	PR debug/50827
+	* gcc.dg/pr50827.c: New test.
+
 2011-11-21  Ed Smith-Rowland  <3dw4rd@verizon.net>
 
 	PR c++/50958

gcc/testsuite/gcc.dg/pr50827.c

+/* PR debug/50827 */
+/* { dg-do compile } */
+/* { dg-options "-g -O2 -funroll-loops" } */
+
+void
+foo (int w, int x, int *y, int *z)
+{
+  float f;
+  while (w--)
+    {
+      f = x;
+      if (y)
+	*y = (__INTPTR_TYPE__) y + w;
+      if (z)
+	*z = w;
+    }
+}

gcc/var-tracking.c

@@ -3008,7 +3008,7 @@ loc_cmp (rtx x, rtx y)
       if (GET_CODE (y) != ENTRY_VALUE)
 	return 1;
       gcc_assert (GET_MODE (x) == GET_MODE (y));
-      return loc_cmp (XEXP (x, 0), XEXP (y, 0));
+      return loc_cmp (ENTRY_VALUE_EXP (x), ENTRY_VALUE_EXP (y));
     }
 
   if (GET_CODE (y) == ENTRY_VALUE)