diff --git a/gcc/lra-constraints.c b/gcc/lra-constraints.c
index 7353e7c..c51a25b 100644
--- a/gcc/lra-constraints.c
+++ b/gcc/lra-constraints.c
@@ -1656,8 +1656,7 @@ prohibited_class_reg_set_mode_p (enum reg_class rclass,
 {
   HARD_REG_SET temp;
   
-  // ??? Is this assert right
-  // lra_assert (hard_reg_set_subset_p (set, reg_class_contents[rclass]));
+  lra_assert (hard_reg_set_subset_p (reg_class_contents[rclass],set));
   COPY_HARD_REG_SET (temp, set);
   AND_COMPL_HARD_REG_SET (temp, lra_no_alloc_regs);
   return (hard_reg_set_subset_p
diff --git a/gcc/testsuite/gcc.target/arm/pr65729.c b/gcc/testsuite/gcc.target/arm/pr65729.c
new file mode 100644
index 0000000..0d7e3c1
--- /dev/null
+++ b/gcc/testsuite/gcc.target/arm/pr65729.c
@@ -0,0 +1,9 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -march=armv7-a -mfloat-abi=hard -mfpu=vfpv3-d16" } */
+
+int foo (void)
+{
+  double x = 0.0;
+  asm volatile ("" : "+gw" (x));
+  return x;
+}