re PR debug/63342 (ICE in loc_list_from_tree, at dwarf2out.c:14698)

	PR debug/63342
	* dwarf2out.c (loc_list_from_tree): Handle MEM_REF with non-zero
	offset, TARGET_MEM_REF and SSA_NAME.

	* gcc.dg/pr63342.c: New test.

From-SVN: r215782

gcc/ChangeLog

 2014-10-01  Jakub Jelinek  <jakub@redhat.com>
 
+	PR debug/63342
+	* dwarf2out.c (loc_list_from_tree): Handle MEM_REF with non-zero
+	offset, TARGET_MEM_REF and SSA_NAME.
+
 	* config/i386/i386.c (expand_vec_perm_palignr): Handle
 	256-bit vectors for TARGET_AVX2.
 

gcc/dwarf2out.c

@@ -14416,15 +14416,21 @@ loc_list_from_tree (tree loc, int want_address)
       break;
 
     case MEM_REF:
-      /* ??? FIXME.  */
       if (!integer_zerop (TREE_OPERAND (loc, 1)))
-	return 0;
+	{
+	  have_address = 1;
+	  goto do_plus;
+	}
       /* Fallthru.  */
     case INDIRECT_REF:
       list_ret = loc_list_from_tree (TREE_OPERAND (loc, 0), 0);
       have_address = 1;
       break;
 
+    case TARGET_MEM_REF:
+    case SSA_NAME:
+      return NULL;
+
     case COMPOUND_EXPR:
       return loc_list_from_tree (TREE_OPERAND (loc, 1), want_address);
 
@@ -14587,6 +14593,7 @@ loc_list_from_tree (tree loc, int want_address)
 
     case POINTER_PLUS_EXPR:
     case PLUS_EXPR:
+    do_plus:
       if (tree_fits_shwi_p (TREE_OPERAND (loc, 1)))
 	{
 	  list_ret = loc_list_from_tree (TREE_OPERAND (loc, 0), 0);

gcc/testsuite/ChangeLog

 2014-10-01  Jakub Jelinek  <jakub@redhat.com>
 
+	PR debug/63342
+	* gcc.dg/pr63342.c: New test.
+
 	PR c++/63306
 	* g++.dg/ipa/pr63306.C: New test.
 

gcc/testsuite/gcc.dg/pr63342.c

+/* PR debug/63342 */
+/* { dg-do compile } */
+/* { dg-options "-g -O2" } */
+/* { dg-additional-options "-fpic" { target fpic } } */
+
+static __thread double u[9], v[9];
+
+void
+foo (double **p, double **q)
+{
+  *p = u;
+  *q = v;
+}
+
+double
+bar (double x)
+{
+  int i;
+  double s = 0.0;
+  for (i = 0; i < 9; i++)
+    {
+      double a = x + v[i];
+      s += u[i] * a * a;
+    }
+  return s;
+}