diff --git a/src/lib_rdi/rdi.c b/src/lib_rdi/rdi.c
index 16fb2684..0820c179 100644
--- a/src/lib_rdi/rdi.c
+++ b/src/lib_rdi/rdi.c
@@ -58,7 +58,7 @@ sizeof(RDI_NameMapNode),
 sizeof(RDI_U8),
 };
 
-RDI_U16 rdi_eval_op_ctrlbits_table[52] =
+RDI_U16 rdi_eval_op_ctrlbits_table[54] =
 {
 RDI_EVAL_CTRLBITS(0, 0, 0),
 RDI_EVAL_CTRLBITS(0, 0, 0),
@@ -66,6 +66,7 @@ RDI_EVAL_CTRLBITS(2, 1, 0),
 RDI_EVAL_CTRLBITS(2, 0, 0),
 RDI_EVAL_CTRLBITS(1, 1, 1),
 RDI_EVAL_CTRLBITS(4, 0, 1),
+RDI_EVAL_CTRLBITS(0, 0, 1),
 RDI_EVAL_CTRLBITS(8, 0, 1),
 RDI_EVAL_CTRLBITS(4, 0, 1),
 RDI_EVAL_CTRLBITS(4, 0, 1),
@@ -104,6 +105,7 @@ RDI_EVAL_CTRLBITS(1, 1, 1),
 RDI_EVAL_CTRLBITS(2, 1, 1),
 RDI_EVAL_CTRLBITS(1, 0, 1),
 RDI_EVAL_CTRLBITS(0, 1, 0),
+RDI_EVAL_CTRLBITS(0, 0, 1),
 RDI_EVAL_CTRLBITS(1, 2, 1),
 RDI_EVAL_CTRLBITS(1, 1, 1),
 RDI_EVAL_CTRLBITS(4, 0, 0),
diff --git a/src/lib_rdi/rdi.h b/src/lib_rdi/rdi.h
index 221c40d6..ac624cdd 100644
--- a/src/lib_rdi/rdi.h
+++ b/src/lib_rdi/rdi.h
@@ -423,6 +423,7 @@ RDI_EvalOp_Cond                 = 2,
 RDI_EvalOp_Skip                 = 3,
 RDI_EvalOp_MemRead              = 4,
 RDI_EvalOp_RegRead              = 5,
+RDI_EvalOp_Unused0              = 6,
 RDI_EvalOp_FrameOff             = 7,
 RDI_EvalOp_ModuleOff            = 8,
 RDI_EvalOp_TLSOff               = 9,
@@ -461,6 +462,7 @@ RDI_EvalOp_TruncSigned          = 41,
 RDI_EvalOp_Convert              = 42,
 RDI_EvalOp_Pick                 = 43,
 RDI_EvalOp_Pop                  = 44,
+RDI_EvalOp_Unused1              = 45,
 RDI_EvalOp_ValueRead            = 46,
 RDI_EvalOp_ByteSwap             = 47,
 RDI_EvalOp_CallSiteValue        = 48,
@@ -937,6 +939,7 @@ X(Cond)\
 X(Skip)\
 X(MemRead)\
 X(RegRead)\
+X(Unused0)\
 X(FrameOff)\
 X(ModuleOff)\
 X(TLSOff)\
@@ -975,6 +978,7 @@ X(TruncSigned)\
 X(Convert)\
 X(Pick)\
 X(Pop)\
+X(Unused1)\
 X(ValueRead)\
 X(ByteSwap)\
 X(CallSiteValue)\
@@ -1476,6 +1480,6 @@ RDI_PROC RDI_S32 rdi_eval_op_typegroup_are_compatible(RDI_EvalOp op, RDI_EvalTyp
 RDI_PROC RDI_U8 *rdi_explanation_string_from_eval_conversion_kind(RDI_EvalConversionKind kind, RDI_U64 *size_out);
 
 extern RDI_U16 rdi_section_element_size_table[44];
-extern RDI_U16 rdi_eval_op_ctrlbits_table[52];
+extern RDI_U16 rdi_eval_op_ctrlbits_table[54];
 
 #endif // RDI_H
diff --git a/src/rdi/rdi.mdesk b/src/rdi/rdi.mdesk
index ea802c86..9f392a27 100644
--- a/src/rdi/rdi.mdesk
+++ b/src/rdi/rdi.mdesk
@@ -1202,7 +1202,7 @@ RDI_EvalOpTable:
   {Skip            3       2 0 0}
   {MemRead         4       1 1 1}
   {RegRead         5       4 0 1}
-  // NOTE(rjf): 6 is free
+  {Unused0         6       0 0 1}
   {FrameOff        7       8 0 1}
   {ModuleOff       8       4 0 1}
   {TLSOff          9       4 0 1}
@@ -1241,7 +1241,7 @@ RDI_EvalOpTable:
   {Convert         42      2 1 1}
   {Pick            43      1 0 1}
   {Pop             44      0 1 0}
-  // NOTE(rjf): 45 is free
+  {Unused1         45      0 0 1}
   {ValueRead       46      1 2 1}
   {ByteSwap        47      1 1 1}
   {CallSiteValue   48      4 0 0}