diff --git a/priv/ir_defs.c b/priv/ir_defs.c
index 9dbe2ac..5b2b750 100644
--- a/priv/ir_defs.c
+++ b/priv/ir_defs.c
@@ -1456,6 +1456,7 @@
 {
    switch (cvt) {
       case ILGop_INVALID: vex_printf("ILGop_INVALID"); break;      
+      case ILGop_Ident64: vex_printf("Ident64"); break;      
       case ILGop_Ident32: vex_printf("Ident32"); break;      
       case ILGop_16Uto32: vex_printf("16Uto32"); break;      
       case ILGop_16Sto32: vex_printf("16Sto32"); break;      
@@ -3495,6 +3496,8 @@
                        /*OUT*/IRType* t_res, /*OUT*/IRType* t_arg )
 {
    switch (cvt) {
+      case ILGop_Ident64:
+         *t_res = Ity_I64; *t_arg = Ity_I64; break;
       case ILGop_Ident32:
          *t_res = Ity_I32; *t_arg = Ity_I32; break;
       case ILGop_16Uto32: case ILGop_16Sto32:
diff --git a/pub/libvex_ir.h b/pub/libvex_ir.h
index 3c998d0..bd97f87 100644
--- a/pub/libvex_ir.h
+++ b/pub/libvex_ir.h
@@ -2566,6 +2566,7 @@
 typedef
    enum {
       ILGop_INVALID=0x1D00,
+      ILGop_Ident64,   /* 64 bit, no conversion */
       ILGop_Ident32,   /* 32 bit, no conversion */
       ILGop_16Uto32,   /* 16 bit load, Z-widen to 32 */
       ILGop_16Sto32,   /* 16 bit load, S-widen to 32 */