--- tree-sra.c
+++ tree-sra.c
@@ -1480,9 +1480,11 @@
 {
   tree prev_base = base;
   tree off;
+  tree mem_ref;
   HOST_WIDE_INT base_offset;
   unsigned HOST_WIDE_INT misalign;
   unsigned int align;
+  bool is_volatile = TREE_THIS_VOLATILE (TREE_TYPE (base));
 
   gcc_checking_assert (offset % BITS_PER_UNIT == 0);
 
@@ -1547,7 +1549,14 @@
   if (align < TYPE_ALIGN (exp_type))
     exp_type = build_aligned_type (exp_type, align);
 
-  return fold_build2_loc (loc, MEM_REF, exp_type, base, off);
+  if (is_volatile && !TREE_THIS_VOLATILE (exp_type))
+    exp_type = build_qualified_type (exp_type, TYPE_QUALS (exp_type)
+                                              | TYPE_QUAL_VOLATILE);
+
+  mem_ref = fold_build2_loc (loc, MEM_REF, exp_type, base, off);
+  if (TREE_THIS_VOLATILE (exp_type))
+    TREE_THIS_VOLATILE (mem_ref) = 1;
+  return mem_ref;
 }
 
 DEF_VEC_ALLOC_P_STACK (tree);