diff --git a/src/cmd/compile/internal/ssa/gen/genericOps.go b/src/cmd/compile/internal/ssa/gen/genericOps.go
index b4c2a01..a5ac628 100644
--- a/src/cmd/compile/internal/ssa/gen/genericOps.go
+++ b/src/cmd/compile/internal/ssa/gen/genericOps.go
@@ -244,6 +244,11 @@
 	{name: "Bswap32", argLength: 1}, // Swap bytes
 	{name: "Bswap64", argLength: 1}, // Swap bytes
 
+	{name: "BitRev8", argLength: 1},  // Reverse the bits in arg[0]
+	{name: "BitRev16", argLength: 1}, // Reverse the bits in arg[0]
+	{name: "BitRev32", argLength: 1}, // Reverse the bits in arg[0]
+	{name: "BitRev64", argLength: 1}, // Reverse the bits in arg[0]
+
 	{name: "Sqrt", argLength: 1}, // sqrt(arg0), float64 only
 
 	// Data movement, max argument length for Phi is indefinite so just pick